Screw extruder and battery production system

Abstract

The utility model discloses a screw extruder and a battery production system. The screw extruder comprises a stock bin and a screw. Wherein the stock bin is provided with a material conveying channel, the material conveying channel comprises a channel body and a discharging channel, and the discharging channel communicates with the channel body; the stock bin comprises a stock bin body and at least two lining pieces, the at least two lining pieces can be selectively and detachably connected to the stock bin body, the channel body is arranged on the stock bin body, and the discharging channel is arranged on the lining pieces. And the screw rod is arranged in the material conveying channel. According to the technical scheme, the stock bin of the screw extruder can be locally replaced, and the replacement cost of the stock bin is reduced; and meanwhile, different types of materials can be adaptively processed by replacing different lining pieces.

Description

Technical Field

[0001] The present application relates to the field of battery manufacturing technology, and in particular to a screw extruder and a battery production system. Background Art

[0002] In battery manufacturing, high-solids slurry is typically extruded through a screw extruder before subsequent processing. However, the high viscosity of this high-solids slurry makes the screw extruder's discharge channel susceptible to wear and corrosion, requiring regular replacement of the screw extruder, which is relatively costly. Utility Model Content

[0003] The main purpose of the present application is to provide a screw extruder, which aims to enable partial replacement of the silo of the screw extruder and reduce the cost of its replacement.

[0004] To achieve the above-mentioned purpose, the screw extruder proposed in this application comprises:

[0005] A silo is provided with a feeding channel, the feeding channel includes a channel body and a discharge channel, and the discharge channel is connected to the channel body; and

[0006] Screw, the screw is arranged in the feeding channel;

[0007] The silo includes a silo body and at least two linings, and the at least two linings can be selectively and detachably connected to the silo body. The channel body is arranged on the silo body, and the discharge channel is arranged on the lining.

[0008] The screw extruder of the technical solution of the present application is configured such that the silo includes a silo body and a liner, and the liner is detachably provided on the silo body. At the same time, the discharge channel with a smaller channel cross-section in the feed channel is provided on the liner, so that when the discharge channel is easily damaged by wear and corrosion due to the smaller channel cross-section, the liner can be directly removed from the silo body without replacing the silo body. In other words, the silo of the screw extruder is partially replaced, which helps to reduce the cost of its replacement. At the same time, the liner also includes at least two types, and the at least two liners can be selectively and detachably connected to the silo body, so that the corresponding liner can be selectively installed according to different types of materials, thereby realizing that the screw extruder can adaptively process different types of materials by replacing different liners.

[0009] In some embodiments, the silo body is provided with a mounting hole that communicates with the channel body; the liner is a cylindrical structure with openings at both ends and is inserted into the mounting hole. This simplifies assembly and disassembly, thereby facilitating easier assembly and disassembly of the liner. Furthermore, it increases the contact area between the liner and the silo body, thereby facilitating greater stability in the liner's installation on the silo body.

[0010] In some embodiments, the silo body includes a barrel and an end plate, with the barrel having an opening at at least at one end. The end plate covers the opening at one end of the barrel and, together with the barrel, forms a channel body. A mounting hole is provided in the end plate, and the liner is removably connected to the end plate. This allows the liner to be mounted on the end plate, while the end plate has a larger area in a plane perpendicular to the centerline of the mounting hole, thereby providing space for a connection structure to secure the liner and improving the convenience of liner installation.

[0011] In some embodiments, the liner includes a barrel body and a flange. The barrel body is inserted into the mounting hole, and the discharge channel is provided in the barrel body. The flange is provided at one end of the barrel body away from the channel body and extends along the circumference of the barrel body. The flange is detachably connected to the end plate. Thus, the flange can correspond to a portion of the end plate to provide a connection structure for connecting and fixing the liner, further improving the convenience of liner installation.

[0012] In some embodiments, the end plate is provided with a first threaded hole, the flange is provided with a first through-hole, and the first through-hole and the first threaded hole are arranged correspondingly; the screw extruder further includes a first fastener, which passes through the first through-hole and is threadedly connected to the first threaded hole. This can simplify and reliably connect the liner to the silo body, thereby facilitating improved stability of the liner connection and ease of assembly and disassembly.

[0013] In some embodiments, the end plate is provided with a first positioning portion, and the flange is provided with a second positioning portion; the second positioning portion cooperates with the first positioning portion to form a positioning flange, thereby locating the installation of the liner and improving the accuracy of the installation of the liner on the silo body.

[0014] In some embodiments, the first positioning portion is a first positioning hole provided in the end plate, and the second positioning portion is a second positioning hole provided in the flange, with the second positioning hole and the first positioning hole being provided in correspondence with each other. The screw extruder further includes a positioning pin, which passes through the second positioning hole and is inserted into the first positioning hole. This simplifies the structure of the first and second positioning portions, thereby simplifying the structural arrangement of the liner and the silo body, thereby improving the ease of manufacturing of both.

[0015] In some embodiments, a first receiving groove is provided on the outer side of the end plate. The first receiving groove is connected to the end of the mounting hole away from the channel body. The flange is accommodated in the first receiving groove, and the shape of the first receiving groove is the same as that of the flange. This improves the compactness of the liner installation on the silo body. At the same time, it can also increase the contact area between the liner and the silo body, thereby facilitating improved stability of the liner installation on the silo body. In this case, the first receiving groove can also play a positioning role for the flange, thereby facilitating improved accuracy and stability of the liner installation on the silo body.

[0016] In some embodiments, there are at least two flanges, two of which are located on opposite sides of the barrel body, thereby enabling positioning and connection on opposite sides of the liner, thereby further improving the accuracy and stability of the liner installation on the silo body.

[0017] In some embodiments, the silo body includes a stepped surface at the junction of the mounting hole and the channel body. The stepped surface is positioned toward the end of the mounting hole away from the channel body, and the end of the liner closer to the channel body abuts the stepped surface. This improves the seal between the liner and the silo body and also facilitates positioning of the liner in a direction parallel to the centerline of the mounting hole.

[0018] In some embodiments, one of the stepped surface and the liner is provided with an inserting protrusion, and the other is provided with an inserting groove, with the inserting protrusion inserted into the inserting groove. This can apply a radial limiting force to the cylindrical body of the liner, thereby helping to reduce the possibility of the liner tilting at the end close to the channel body, so that the end of the liner close to the channel body can be accurately connected with the channel body.

[0019] In some embodiments, the silo body includes a barrel, at least one end of which is open; and the liner is a plate-like structure disposed outside the barrel and covering the barrel opening. Thus, the plate-like liner covers the barrel opening, simplifying the structure of the silo body and the liner, thereby facilitating easier manufacture of the liner and silo body.

[0020] In some embodiments, the screw extruder further comprises a clamping member connected to the barrel and cooperating with the barrel to clamp the liner. Thus, the clamping member clamps and fixes the liner, thereby increasing the contact area and thereby facilitating improved stability of the liner installation on the silo body.

[0021] In some embodiments, the liner comprises a plate body and a boss. The plate body covers the opening at one end of the barrel, and the clamping member and the barrel cooperate to clamp the plate body. The boss is protruding from the side of the plate body facing away from the channel body. The discharge channel portion is provided on the plate body, and the remaining portion is provided on the boss. This allows the liner to be relatively thick only in the portion corresponding to the discharge channel, while the remaining portion can be relatively thin, thereby saving raw materials and reducing manufacturing costs. This also helps reduce the volume of the liner, thereby improving the compactness of the arrangement between the clamping member, the liner, and the silo body.

[0022] In some embodiments, the barrel is provided with a second threaded hole, the plate body is provided with a second through-hole, and the clamping member is provided with a third through-hole, the second through-hole being arranged corresponding to the second threaded hole and the third through-hole; the screw extruder further comprises a second fastener, the second fastener passing through the third through-hole and the second through-hole and being threadedly connected to the second threaded hole. Thus, the connection structure between the clamping member, the liner, and the silo body can be simplified and reliable, thereby facilitating improved stability of the liner connection and ease of assembly and disassembly.

[0023] In some embodiments, the clamping member is a plate-like structure that fits against the side of the plate body facing away from the channel body. The clamping member is provided with a third positioning hole, into which the protrusion is inserted. Thus, the third positioning hole allows for insertion and engagement with the protrusion, thereby positioning the liner and further improving the accuracy of liner installation. This also provides radial restraint on the protrusion, reducing the likelihood of the liner tilting away from the channel body and improving the accuracy of the connection between the liner and the channel body.

[0024] In some embodiments, the inner wall of the discharge channel is provided with a chromium coating, a tungsten carbide coating, or a titanium nitride coating; and / or the roughness Ra of the inner wall of the discharge channel satisfies the relationship: 0.02≤Ra≤0.8; and / or the material of the liner is 45 steel, 40Cr, 35CrMo, 42CrMo, 42CrMo38CrMoAl, polytetrafluoroethylene, polyetheretherketone, or ultra-high molecular weight polyethylene; and / or the number of screws is two, and the discharge channel includes two sub-channels connected side by side, with each screw corresponding to a sub-channel. Thus, the provision of a chromium coating, a tungsten carbide coating, or a titanium nitride coating can improve the performance of the liner, so as to enhance the wear resistance and corrosion resistance of the liner in the discharge channel and reduce the replacement frequency of the liner. Setting the roughness Ra of the inner wall of the discharge channel to 0.02 to 0.8 can make the inner wall of the discharge channel relatively smooth, reducing the possibility of material sticking to the wall. Setting the material of the liner to alloy steels such as 45 steel, 40Cr, 35CrMo, 42CrMo, 42CrMo or 38CrMoAl can facilitate the use of liner materials of corresponding materials to adapt to the processing and use of different types of materials according to the corrosion resistance, wear resistance or high pressure resistance requirements of different materials. Setting the material of the liner to a polymer material such as polytetrafluoroethylene, polyetheretherketone or ultra-high molecular weight polyethylene can meet temporary needs, thereby saving processing costs and time for temporary replacement or rapid testing and verification. Setting the number of screws to two can improve the extrusion and mixing effect of the material; and setting the discharge channel to include two sub-channels corresponding to the two screws respectively can improve the compactness of the distribution between the screws.

[0025] The present application also proposes a battery production system, comprising the above-mentioned screw extruder. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0027] Figure 1 This is a structural diagram of an embodiment of a screw extruder of the present application;

[0028] Figure 2 for Figure 1 A schematic diagram of a partial structure of the silo of the medium screw extruder;

[0029] Figure 3 for Figure 2 A schematic diagram of the explosion structure of the silo;

[0030] Figure 4 for Figure 3 Schematic diagram of the structure of the middle silo body;

[0031] Figure 5 for Figure 3 Schematic diagram of the structure of the middle lining;

[0032] Figure 6 for Figure 5 Schematic diagram of the middle lining from another perspective;

[0033] Figure 7 A partial structural diagram of another embodiment of a silo of the screw extruder of the present application;

[0034] Figure 8 for Figure 7 Schematic diagram of the explosion structure of the silo.

[0035] Description of Figure Numbers:

[0036] 100, screw extruder; 10, silo; 10a, feed channel; 10a1, channel body; 10a2, discharge channel; 10a21, sub-channel; 11, silo body; 111, barrel; 111a, second threaded hole; 112, end plate; 112a, mounting hole; 112b, first threaded hole; 1121, first positioning portion; 1121a, first positioning hole; 112e, first accommodating groove; 113, stepped surface; 1131, plug-in protrusion; 13, lining; 1 31. Cylinder body; 131a. Insertion groove; 132. Flange; 132a. First through-hole; 1321. Second positioning portion; 1321a. Second positioning hole; 133. Plate body; 133a. Second through-hole; 1331. Protrusion; 134. Boss; 20. Screw; 40. Drive mechanism; 50. First fastener; 60. Positioning pin; 70. Clamp; 70a. Third through-hole; 70b. Second accommodating groove; 70c. Third positioning hole; 80. Second fastener.

[0037] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0039] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0040] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or a solution in which both A and B are satisfied. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0042] Batteries, which are devices used to store electrical energy, are not only widely used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars and other fields.

[0043] In the manufacturing process of batteries, active material materials are usually extruded through a screw extruder, and then subsequent processing steps are carried out. However, screw extruders in related technologies are generally only used for the extrusion of materials such as plastics or rubber. The properties of active material materials are very different from those of plastics and rubbers because active material materials have a high solid content. At this time, the viscosity of the slurry with a high solid content will be relatively large, making the discharge channel in the feed channel of the screw extruder with a relatively small channel cross-sectional area susceptible to wear and corrosion, which in turn requires the screw extruder to be replaced regularly, and the cost is relatively high.

[0044] Therefore, based on the above considerations, in order to solve the technical problem that the discharge channel of the current screw extruder is easily subject to wear and corrosion, resulting in high regular replacement costs, the present application proposes a new type of screw extruder. The screw extruder innovatively sets the silo as a split structure, including a silo body and a liner, and sets the discharge channel, which is easily subject to wear and corrosion, on the liner, thereby achieving partial replacement of the liner in the silo without having to replace the entire silo, thereby reducing replacement costs.

[0045] Next, the structure of the screw extruder proposed in this application is explained with examples:

[0046] Please refer to Figures 1 to 3 In one embodiment of the present application, a screw extruder 100 includes a silo 10 and a screw 20. The silo 10 is provided with a feed channel 10a. The feed channel 10a includes a channel body 10a1 and a discharge channel 10a2. The discharge channel 10a2 is connected to the channel body 10a1. The screw 20 is provided in the feed channel 10a. The silo 10 includes a silo body 11 and at least two liners 13. At least two liners 13 can be selectively and detachably connected to the silo body 11. The channel body 10a1 is provided in the silo body 11, and the discharge channel 10a2 is provided in the liner 13.

[0047] The silo 10 can be roughly cylindrical in structure, and its internal hollow part can be formed into a feed channel 10a for accommodating materials. Specifically, when the screw extruder 100 is in a normal installation state, the silo 10 can be extended in the horizontal direction, and the feed channel 10a can be extended along the extension direction of the silo 10. In addition, the silo body 11 in the silo 10 can be the main structure of the silo 10, and a channel body 10a1 is formed inside it, and the liner 13 can be used to form a discharge channel 10a2, so that when the discharge channel 10a2 is worn and corroded, or when different types of materials need to be processed, only different types of liners 13 can be replaced. Specifically, the two liners 13 of different types can be made of different materials but have the same shape and size, and the shape and size mainly refer to the shape and size of the discharge channel 10a2. Of course, the two liners 13 can also be made of the same material but different shapes and sizes. Alternatively, the two liners 13 can be made of different materials and have different shapes and sizes. Alternatively, the roughness of the inner wall of the discharge channel 10a2 in the two liners 13 is different. That is, if one of the material, shape, size and roughness of the inner wall of the channel is different, it can represent different types of liners 13. Moreover, when the number of liners 13 is three or more, there may be at least two liners 13 of different types. At this time, at least two liners 13 can be selectively and detachably connected to the silo body 11, that is, each liner 13 can be installed on the silo body 11 accordingly as needed, and after the installation is completed, it can also be disassembled and removed. In addition, the silo body 11 can be as described below, including a barrel 111 and an end plate 112. Of course, the silo body 11 can also include only the barrel 111, or, on the basis of including the barrel 111, a support plate is further provided on the circumferential side of the barrel 111. Therefore, the present application does not limit the structural type and shape of the silo body 11. The lining 13 can be a cylindrical structure as described below, and can be inserted into the silo body 11. Of course, the lining 13 can also be a plate-shaped structure as described below, and can cover the outside of the silo body 11. Therefore, the present application does not limit the structural type and shape of the lining 13. Moreover, the shape of the outer side of the lining 13 can be set to be the same as the shape of the inner discharge channel 10a2, for example, both are 8-shaped or circular. Of course, the shape of the outer side of the lining 13 can also be set to be different from the shape of the inner discharge channel 10a2, for example, the discharge channel 10a2 is 8-shaped, and the shape of the outer side of the lining 13 can be rectangular or square. In addition, the connection between the lining 13 and the silo body 11 can be a screw connection, a snap connection, or a magnetic connection, etc. The present application does not limit the connection method between the lining 13 and the silo body 11.In addition, the silo body 11 may be provided with a feed channel at one end away from the liner 13 for placing materials, and the feed channel is connected to the channel body 10a1 in the silo body 11. Of course, the silo body 11 may also be provided with a hopper at one end away from the liner 13 for placing materials, and the hopper is connected to the channel body 10a1 in the silo body 11.

[0048] The screw 20 can be located in the feed channel 10a and extended along the extension direction of the feed channel 10a so that it can be used to extrude the material located in the feed channel 10a when it rotates. Therefore, the screw extruder 100 can also include a drive mechanism 40, which can be arranged at the end of the silo 10 away from the outlet and connected to the screw 20 to drive the screw 20 to rotate and extrude the material. The drive mechanism 40 can include a motor, or it can include a transmission assembly on the basis of including the motor to drive the screw 20 to rotate through the transmission assembly. The transmission assembly can include a driving gear and a driven gear, the driving gear can be connected to the motor, and the driven gear can be connected to the screw 20. Of course, the transmission assembly can also include a driving wheel, a driven wheel and a belt, the driving wheel can be connected to the motor, the driven wheel can be connected to the screw 20, and the belt can be wound around the driving wheel and the driven wheel. Therefore, this application does not limit the structural type of the transmission assembly. Alternatively, the screw 20 may be partially located within the main channel 10a1 of the feed channel 10a and partially located within the discharge channel 10a2 of the feed channel 10a. When the screw 20 is partially located within the discharge channel 10a2, the shape of the discharge channel 10a2 can be adapted to the shape of the screw 20, for example, being conical. Of course, the screw 20 may also be located only within the main channel 10a1 of the feed channel 10a and not within the discharge channel 10a2. Furthermore, the number of screws 20 may be one or two. The shape of the screw 20 may be cylindrical, meaning that the diameter of the screw 20 is uniform at all locations along the extension direction of the feed channel 10a. Of course, the shape of the screw 20 may also be conical, meaning that the diameter of the screw 20 increases from the end of the feed channel 10a closer to the discharge channel 10a2 to the end farther from the discharge channel 10a2.

[0049] The screw extruder 100 of the technical solution of the present application is configured such that the silo 10 includes a silo body 11 and a liner 13, and the liner 13 is detachably mounted on the silo body 11. At the same time, the discharge channel 10a2, which has a smaller channel cross-section in the feed channel 10a, is mounted on the liner 13. This allows the liner 13 to be directly removed from the silo body 11 when the discharge channel 10a2 is susceptible to wear and corrosion due to its smaller channel cross-section, without having to replace the silo body 11. In other words, partial replacement of the silo 10 of the screw extruder 100 is achieved, thereby helping to reduce its replacement cost. At the same time, the liner 13 also includes at least two types, and one of the at least two types of liner 13 can be selectively and detachably connected to the silo body 11, so that the corresponding liner 13 can be selectively installed according to different types of materials, thereby enabling the screw extruder 100 to adaptively process different types of materials by replacing different liners 13.

[0050] Please refer to Figure 2 and Figure 3 In one embodiment of the present application, the silo body 11 is provided with a mounting hole 112a, which is connected to the channel body 10a1; the liner 13 is a cylindrical structure with openings at both ends, and is inserted into the mounting hole 112a.

[0051] The shape of the mounting hole 112a can be set to be the same as the shape of the liner 13. For example: on the projection plane perpendicular to the center line of the mounting hole 112a, when the projection of the liner 13 is an 8-shape, the projection of the mounting hole 112a can also be an 8-shape; when the projection of the liner 13 is circular, the projection of the mounting hole 112a can also be circular. In addition, the silo body 11 can be as described below, including a barrel 111 and an end plate 112, and the mounting hole 112a can be provided on the end plate 112. Of course, the silo body 11 can also be only including the barrel 111, and the mounting hole 112a can be directly formed by the opening at one end of the barrel 111. In addition, when the liner 13 is installed by being inserted into the mounting hole 112a, the liner 13 can be connected to the outer wall of the silo body 11 through a flange 132 as described below. Of course, the lining 13 may also be connected to the hole wall of the mounting hole 112a via the side circumferential surface of the hole wall corresponding to the mounting hole 112a.

[0052] In this embodiment, the lining 13 is configured as a cylindrical structure and inserted into the mounting hole 112a of the silo body 11. This simplifies assembly and disassembly, thereby facilitating easier assembly and disassembly of the lining 13. Furthermore, this increases the contact area between the lining 13 and the silo body 11, further facilitating improved stability in the installation of the lining 13 on the silo body 11. Furthermore, the number of components in the silo 10 is relatively small, further enhancing ease of assembly and disassembly.

[0053] Please refer to Figures 2 to 4 In one embodiment of the present application, the silo body 11 includes a barrel 111 and an end plate 112, and the barrel 111 is open at least at one end; the end plate 112 covers the opening at one end of the barrel 111, and is configured together with the barrel 111 to form a channel body 10a1; the mounting hole 112a is provided on the end plate 112, and the liner 13 is detachably connected to the end plate 112.

[0054] The barrel 111 is open at least at one end, that is, the barrel 111 may be opened only at the end close to the liner 13, while the end close to the drive mechanism 40 described above may be closed. Of course, the barrel 111 may also be opened at the end close to the drive mechanism 40, in which case the number of end plates 112 may be two, so as to cover the openings at both ends of the barrel 111 respectively. In addition, the end plate 112 and the barrel 111 may be an integral structure. The integral structure proposed in the present application refers to a process of manufacturing and molding an integral part, so that the two parts can be formed into a whole after the manufacturing is completed, such as casting integral molding, stamping integral molding or injection molding. Of course, the end plate 112 and the barrel 111 may also be split structures, and after each is manufactured, they can be connected by any connection method such as screw connection, snap connection, welding connection or adhesive connection.

[0055] In this embodiment, the silo body 11 is configured to include a barrel 111 and an end plate 112, and a mounting hole 112a is provided on the end plate 112, so that the liner 13 can be installed on the end plate 112, and the end plate 112 has a larger area on the plane perpendicular to the center line of the mounting hole 112a, thereby providing space for setting a connecting structure for connecting and fixing the liner 13, thereby improving the convenience of installing and setting the liner 13.

[0056] Please refer to Figures 2 to 5 In one embodiment of the present application, the liner 13 includes a cylinder body 131 and a flange 132. The cylinder body 131 is inserted into the mounting hole 112a, and the discharge channel 10a2 is provided on the cylinder body 131; the flange 132 is provided at one end of the cylinder body 131 away from the channel body 10a1, and extends along the circumference of the cylinder body 131. The flange 132 is detachably connected to the end plate 112.

[0057] The barrel body 131 can be the main structure of the liner 13 to form the discharge channel 10a2 inside. The outer shape of the barrel body 131 can be set to be the same as the shape of the discharge channel 10a2, so as to reduce the overall volume of the liner 13. Of course, the outer shape of the barrel body 131 can also be set to be different from the shape of the discharge channel 10a2. The flange 132 can be set around the outside of one end of the barrel body 131. The flange 132 can be set around the circumference of the barrel body 131 for a full circle, or around half a circle, etc.

[0058] In this embodiment, the liner 13 is configured to include a cylinder body 131 and a flange 132, so that on a plane perpendicular to the center line of the mounting hole 112a, the flange 132 can correspond to a portion of the end plate 112, so as to set a connecting structure for connecting and fixing the liner 13, thereby further improving the convenience of installing and setting the liner 13.

[0059] Please refer to Figures 3 to 5 In one embodiment of the present application, the end plate 112 is provided with a first threaded hole 112b, and the flange 132 is provided with a first through-hole 132a, and the first through-hole 132a and the first threaded hole 112b are arranged correspondingly; the screw extruder 100 also includes a first fastener 50, and the first fastener 50 passes through the first through-hole 132a and is threadedly connected to the first threaded hole 112b.

[0060] The first fastener 50 may be a screw. The number of the first threaded hole 112b, the first through hole 132a, and the first fastener 50 may be one, or two or more.

[0061] In this embodiment, by threading the liner 13 and the silo body 11 through the first fastener 50, the connection structure between the two can be made simple and reliable, which is beneficial to improving the stability of the connection of the liner 13 and the convenience of disassembly and assembly.

[0062] Please refer to Figures 3 to 5 In one embodiment of the present application, the number of first threaded holes 112b is at least two, and at least two first threaded holes 112b are arranged at intervals along the circumference of the mounting hole 112a; the number of first through-holes 132a is at least two, and each first through-hole 132a is corresponding to a first threaded hole 112b; the number of first fasteners 50 is at least two, and each first fastener 50 passes through a first through-hole 132a and is threadedly connected to a first threaded hole 112b.

[0063] In this embodiment, the number of the first threaded hole 112b, the first through hole 132a and the first fastener 50 is set to at least two, which can increase the locking position of the lining member 13 and further help to improve the stability of the connection of the lining member 13.

[0064] Please refer to Figures 3 to 5 In one embodiment of the present application, the end plate 112 is provided with a first positioning portion 1121 , and the flange 132 is provided with a second positioning portion 1321 ; the second positioning portion 1321 cooperates with the first positioning portion 1121 to be configured as a positioning flange 132 .

[0065] The first positioning portion 1121 and the second positioning portion 1321 can be used to cooperate to play a positioning role when the liner 13 is installed on the silo body 11. The first positioning portion 1121 and the second positioning portion 1321 can be in the form of a first positioning hole 1121a and a second positioning hole 1321a as described below, and can be positioned with a positioning pin 60. Of course, the first positioning portion 1121 and the second positioning portion 1321 can also be in the form of a structure in which one of them is a hole body and the other is a column body, and the two are directly plugged in for positioning. In addition, the number of the first positioning portion 1121 and the second positioning portion 1321 can be one, or two or more.

[0066] In this embodiment, the cooperation between the first positioning portion 1121 and the second positioning portion 1321 can play a positioning role in the installation of the liner 13, so as to improve the accuracy of the installation of the liner 13 on the silo body 11.

[0067] Please refer to Figures 3 to 5 In one embodiment of the present application, the first positioning portion 1121 is a first positioning hole 1121a provided on the end plate 112, the second positioning portion 1321 is a second positioning hole 1321a provided on the flange 132, and the second positioning hole 1321a and the first positioning hole 1121a are arranged correspondingly; the screw extruder 100 also includes a positioning pin 60, which passes through the second positioning hole 1321a and is inserted into the first positioning hole 1121a.

[0068] The positioning pin 60 may include a cylindrical body and a pin head located at one end of the cylindrical body. The cross-sectional area of the pin head is larger than the cross-sectional area of the cylindrical body to facilitate assembly and disassembly of the positioning pin 60. Of course, the positioning pin 60 may also include only the cylindrical body. In addition, the shapes of the first positioning hole 1121a and the second positioning hole 1321a may be circular, or may be square, rectangular, or the like, which is not limited in this application. The shape of the positioning pin 60 is configured to be the same as the shape of the first positioning hole 1121a and the second positioning hole 1321a.

[0069] In this embodiment, the first positioning portion 1121 and the second positioning portion 1321 are respectively configured as the first positioning hole 1121a and the second positioning hole 1321a, which can simplify the structure of the first positioning portion 1121 and the second positioning portion 1321. At the same time, the positioning function can be completed by using the relatively simple positioning pin 60. This helps to simplify the structure of the liner 13 and the silo body 11, thereby improving the manufacturing convenience of both.

[0070] Please refer to Figures 2 to 4 In one embodiment of the present application, a first accommodating groove 112e is provided on the outer side of the end plate 112. The first accommodating groove 112e is connected to the end of the mounting hole 112a away from the channel body 10a1, and the flange 132 is accommodated in the first accommodating groove 112e.

[0071] The first receiving groove 112e can be provided at the edge of the mounting hole 112a to accommodate the flange 132. The shape of the first receiving groove 112e, as projected perpendicular to the centerline of the mounting hole 112a, can be identical to or different from the shape of the flange 132. Furthermore, the flange 132 can be partially accommodated within the first receiving groove 112e, meaning that the thickness of the flange 132 can be greater than the depth of the first receiving groove 112e. Alternatively, the flange 132 can be fully accommodated within the first receiving groove 112e.

[0072] In this embodiment, the first receiving groove 112e accommodates the flange 132, thereby improving the compactness of the installation of the lining 13 on the silo body 11. At the same time, the contact area between the lining 13 and the silo body 11 is increased, thereby facilitating improved stability in the installation of the lining 13 on the silo body 11.

[0073] Please refer to Figures 3 to 5 In one embodiment of the present application, the shape of the first accommodating groove 112 e is the same as the shape of the flange 132 .

[0074] In this embodiment, the shapes of the first accommodating groove 112e and the flange 132 are set to be the same, so that the first accommodating groove 112e can also play a positioning role for the flange 132, which is beneficial to improving the accuracy and stability of the installation of the liner 13 on the silo body 11.

[0075] In one embodiment of the present application, the number of the flanges 132 is at least two, wherein the two flanges 132 are disposed on opposite sides of the barrel body 131 .

[0076] In this embodiment, the number of flanges 132 is set to at least two, so that positioning and connection can be performed on both opposite sides of the liner 13, which is beneficial to further improve the accuracy and stability of the installation of the liner 13 on the silo body 11.

[0077] In one embodiment of the present application, the flange 132 and the cylinder body 131 are an integral structure.

[0078] In this embodiment, the flange 132 and the barrel body 131 are integrally formed so that they can be formed into one part, thereby facilitating the convenience of assembly and disassembly thereof and improving the overall structural strength of the liner 13, thereby increasing its service life.

[0079] In one embodiment of the present application, the barrel 111 and the end plate 112 are an integrated structure.

[0080] In this embodiment, the barrel 111 and the end plate 112 are integrally formed so that they can be formed into one part, thereby facilitating their assembly and disassembly, and also improving the overall structural strength of the silo body 11, thereby increasing its service life.

[0081] Please refer to Figures 3 to 6 In one embodiment of the present application, the silo body 11 is provided with a step surface 113 at the connection between the mounting hole 112a and the channel body 10a1. The step surface 113 is arranged toward the end of the mounting hole 112a away from the channel body 10a1, and the end of the lining 13 close to the channel body 10a1 abuts against the step surface 113.

[0082] A stepped surface 113 is formed at the junction of the mounting hole 112a and the channel body 10a1. Specifically, the area of the mounting hole 112a can be larger than the channel cross-section of the end of the channel body 10a1 near the mounting hole 112a, thereby forming an outwardly facing stepped surface 113. The stepped surface 113 can extend along the circumference of the mounting hole 112a for a full circle, or for half a circle, etc.

[0083] In this embodiment, the end of the cylindrical body 131 of the liner 13, which is adjacent to the channel body 10a1, abuts the stepped surface 113, thereby improving the sealing performance of the connection between the liner 13 and the silo body 11. Furthermore, the liner 13 can be positioned for installation in a direction parallel to the centerline of the mounting hole 112a.

[0084] Please refer to Figures 4 to 6 In one embodiment of the present application, one of the step surface 113 and the lining 13 is provided with an inserting protrusion 1131, and the other one is provided with an inserting groove 131a, and the inserting protrusion 1131 is inserted into the inserting groove 131a.

[0085] In a group of plug-in protrusions 1131 and plug-in grooves 131a that are plugged into each other, the plug-in protrusion 1131 can be set on the step surface 113, and the plug-in protrusion 1131 can be set on the barrel body 131 of the liner 13; or the plug-in protrusion 1131 can be set on the barrel body 131 of the liner 13, and the plug-in groove 131a can be set on the step surface 113. Among them, the number of plug-in protrusions 1131 and plug-in grooves 131a can be one, and of course, can also be two or more. In addition, when the plug-in groove 131a is set on the barrel body 131 in the liner 13, the plug-in groove 131a can only penetrate the side of the barrel body 131 close to the step surface 113, or it can further penetrate the inner wall of the discharge channel 10a2, so as to improve the convenience of manufacturing the liner 13. Similarly, when the insertion groove 131 a is provided on the step surface 113 , the insertion groove 131 a may only penetrate the step surface 113 , or may further penetrate the inner wall of the channel body 10 a 1 .

[0086] In this embodiment, through the plug-in fit of the plug-in protrusion 1131 and the plug-in groove 131a, the cylindrical body 131 of the liner 13 can be subjected to a radial limiting force, which is beneficial to reduce the warping of the liner 13 at the end close to the channel body 10a1, so that the end of the liner 13 close to the channel body 10a1 can be accurately docked with the channel body 10a1.

[0087] Please refer to Figures 4 to 6 In one embodiment of the present application, the number of the plug-in protrusions 1131 is at least two, and at least two plug-in protrusions 1131 are arranged at intervals along the circumference of the mounting hole 112a; the number of the plug-in grooves 131a is at least two, and each plug-in protrusion 1131 is inserted into a plug-in groove 131a.

[0088] In this embodiment, the number of the plug-in protrusions 1131 and the plug-in grooves 131a is set to at least two, so that the lining 13 can be subjected to radial limiting forces at at least two locations in the circumference, which is beneficial to improving the limiting effect of the end of the lining 13 close to the channel body 10a1, and further reducing the possibility of the lining 13 warping at the end close to the channel body 10a1.

[0089] Please refer to Figure 7 and Figure 8 In one embodiment of the present application, the silo body 11 includes a barrel 111, and at least one end of the barrel 111 is open; the liner 13 is a plate-like structure, and the liner 13 is arranged on the outside of the barrel 111 and covers the opening of the barrel 111.

[0090] In this embodiment, the silo body 11 is configured to include a barrel 111, and a plate-shaped liner 13 is used to cover the opening of the barrel 111. This simplifies the structure of the silo body 11 and the structure of the liner 13, thereby facilitating easier manufacture of the liner 13 and the silo body 11. In this case, the liner 13 can be mounted by clamping means 70, as described below, or it can be directly connected to the barrel 111.

[0091] Please refer to Figure 7 and Figure 8 In one embodiment of the present application, the screw extruder 100 further includes a clamping member 70 , which is connected to the barrel 111 and cooperates with the barrel 111 to clamp the liner 13 .

[0092] The clamping member 70 can cooperate with the barrel 111 to clamp and secure the liner 13. The clamping member 70 can be a plate structure, or it can be an L-shaped hook structure. Furthermore, the connection between the clamping member 70 and the barrel 111 can be any connection method, such as screw connection, snap connection, magnetic connection, etc.

[0093] In this embodiment, the lining member 13 is clamped and fixed by the clamping member 70 , which can increase the contact area, thereby facilitating improvement of the stability of the installation of the lining member 13 on the silo body 11 .

[0094] Please refer to Figure 7 and Figure 8 In one embodiment of the present application, the liner 13 includes a plate body 133 and a boss 134. The plate body 133 covers the opening at one end of the barrel 111, and the clamping member 70 and the barrel 111 cooperate to clamp the plate body 133; the boss 134 is protruding from the side of the plate body 133 facing away from the channel body 10a1, and part of the discharge channel 10a2 is provided on the plate body 133, and the other part is provided on the boss 134.

[0095] In this embodiment, the lining member 13 is configured as a plate body 133 and a protrusion 134. This allows the lining member 13 to be relatively thick only in the portion corresponding to the discharge channel 10a2, while the remaining portions can be relatively thin. This saves raw materials and reduces manufacturing costs. This also helps reduce the volume of the lining member 13, thereby improving the compactness of the arrangement between the clamping member 70, the lining member 13, and the silo body 11. The plate body 133 and the protrusion 134 can be integrally formed to enhance the overall structural strength of the lining member 13 and improve manufacturing efficiency by eliminating assembly.

[0096] Please refer to Figure 7 and Figure 8In one embodiment of the present application, the barrel 111 is provided with a second threaded hole 111a, the plate body 133 is provided with a second through-hole 133a, the clamping member 70 is provided with a third through-hole 70a, and the second through-hole 133a is provided corresponding to the second threaded hole 111a and the third through-hole 70a; the screw extruder 100 also includes a second fastener 80, the second fastener 80 passes through the third through-hole 70a and the second through-hole 133a, and is threadedly connected to the second threaded hole 111a.

[0097] The second fastener 80 may be a screw. The number of the second threaded hole 111a, the second through hole 133a, the third through hole 70a and the second fastener 80 may be one, or two or more.

[0098] In this embodiment, by threading the clamping member 70, the lining member 13 and the silo body 11 through the second fastener 80, the connection structure therebetween can be made simple and reliable, thereby facilitating improvement of the connection stability of the lining member 13 and the convenience of assembly and disassembly.

[0099] Please refer to Figure 7 and Figure 8 In one embodiment of the present application, in order to further improve the stability of the connection to the liner 13, the number of the second threaded hole 111a, the second through-hole 133a, the third through-hole 70a and the second fastener 80 can be set to at least two, and the second through-hole 133a can be distributed on opposite sides of the liner 13.

[0100] Please refer to Figure 7 and Figure 8 In one embodiment of the present application, a protrusion 1331 is provided on the side of the plate body 133 facing away from the channel body 10a1, and the protrusion 1331 and the protrusion seat 134 are arranged at intervals; a second accommodating groove 70b is provided on the side of the clamping member 70 facing the plate body 133, and the protrusion 1331 is accommodated in the second accommodating groove 70b; part of the second through-hole 133a is provided on the plate body 133, and the other part is provided on the protrusion 1331, and the third through-hole 70a is connected to the second accommodating groove 70b.

[0101] In this embodiment, the embedded cooperation of the protrusion 1331 and the second receiving groove 70b can improve the accuracy of the alignment between the clamping member 70 and the lining member 13. At the same time, the contact area can be further increased, and the stability of the clamping of the lining member 13 can be improved.

[0102] Please refer to Figure 8 In one embodiment of the present application, the clamping member 70 is a plate-shaped structure and is attached to the side of the plate body 133 facing away from the channel body 10a1; the clamping member 70 is provided with a third positioning hole 70c, and the boss 134 is inserted into the third positioning hole 70c.

[0103] In this embodiment, the plate-like structure of the clamping member 70 increases the contact area with the liner 13, further improving the stability of the connection to the liner 13. The third positioning hole 70c is configured to engage with the boss 134, positioning the liner 13 and further improving the accuracy of the installation of the liner 13. Furthermore, the boss 134 is radially restrained, thereby reducing the possibility of warping of the end of the liner 13 away from the channel body 10a1 and improving the accuracy of the connection between the liner 13 and the channel body 10a1.

[0104] In one embodiment of the present application, the inner wall of the discharge channel 10a2 is provided with a chromium coating, a tungsten carbide coating or a titanium nitride coating.

[0105] In this embodiment, the provision of a chromium coating, a tungsten carbide coating or a titanium nitride coating can improve the performance of the liner 13 , so as to enhance the wear resistance and corrosion resistance of the liner 13 in the discharge channel 10a2 and reduce the replacement frequency of the liner 13 .

[0106] In one embodiment of the present application, the material of the lining 13 can be 45 steel, 40Cr, 35CrMo, 42CrMo, 42CrMo, or 38CrMoAl alloy steel. This allows for selective use of lining 13 of corresponding materials to accommodate the processing of different types of materials, depending on the corrosion resistance, wear resistance, or high pressure resistance required of the materials. Furthermore, in some embodiments, the metal material can undergo surface treatments such as carburizing and nitriding to further enhance the wear resistance, fatigue resistance, and corrosion resistance of the lining 13.

[0107] Of course, in one embodiment of the present application, the material of the lining 13 can also be a polymer material such as polytetrafluoroethylene, polyetheretherketone or ultra-high molecular weight polyethylene, which can meet temporary needs in order to save processing costs and time for temporary replacement or rapid testing and verification.

[0108] In one embodiment of the present application, the roughness Ra of the inner wall of the discharge channel 10a2 satisfies the relationship: 0.02≤Ra≤0.8.

[0109] In this embodiment, the roughness Ra of the inner wall of the discharge channel 10a2 is set to 0.02 to 0.8, making the inner wall of the discharge channel 10a2 relatively smooth and reducing the possibility of material sticking to the wall. Furthermore, the roughness of the inner wall of the discharge channel 10a2 of the liner 13 can be adaptively set according to the viscosity of different materials.

[0110] Please refer to Figure 2In one embodiment of the present application, there are two screws 20, and the discharge channel 10a2 includes two sub-channels 10a21 connected side by side, and each screw 20 is provided corresponding to one sub-channel 10a21.

[0111] In this embodiment, the number of screws 20 is set to two, which can improve the extrusion and mixing effect of the material. The discharge channel 10a2 is provided with two sub-channels 10a21 corresponding to the two screws 20 respectively, which can improve the compactness of the distribution between the screws 20.

[0112] In one embodiment of the present application, when the screw 20 is a conical screw, the discharge channel 10a2 in the liner 13 can also be adaptively set to a conical shape. At this time, the setting of at least two liners 13 makes it possible to change the gap between the screw 20 and the silo 10 by replacing liners 13 with different tapers, so as to adjust the amount of material passing through the gap during the rotation of the screw 20 by changing the gap, control the material transportation efficiency, and take into account the material mixing efficiency. Of course, when the screw 20 is cylindrical, the discharge channel 10a2 in the liner 13 can also be set to a circular shape. At this time, the channel cross-sectional areas of the discharge channels 10a2 in different liners 13 can be set to be different, so that the gap between the screw 20 and the silo 10 can be changed by replacing liners 13 with channel cross-sectional areas.

[0113] Please refer to Figures 1 to 6In one embodiment of the present application, a screw extruder 100 includes a silo 10 and a screw 20. The silo 10 is provided with a feeding channel 10a, which includes a channel body 10a1 and a discharge channel 10a2, and the discharge channel 10a2 is connected to the channel body 10a1; the screw 20 is provided in the feeding channel 10a; wherein, the silo 10 includes a silo body 11 and at least two liner members 13, at least two liner members 13 can be selectively and detachably connected to the silo body 11, the channel body 10a1 is provided in the silo body 11, and the discharge channel 10a2 is provided in the liner member 13. The silo body 11 is provided with a mounting hole 112a, and the mounting hole 112a is connected to the channel body 10a1; the liner member 13 is a cylindrical structure with both ends open and inserted into the mounting hole 112a. The silo body 11 includes a barrel 111 and an end plate 112. The barrel 111 is open at least at one end. The end plate 112 covers the opening at one end of the barrel 111 and, together with the barrel 111, forms a channel body 10a1. A mounting hole 112a is provided in the end plate 112, and a liner 13 is detachably connected to the end plate 112. The liner 13 includes a barrel body 131 and a flange 132. The barrel body 131 is inserted into the mounting hole 112a, and the discharge channel 10a2 is provided in the barrel body 131. The flange 132 is provided at the end of the barrel body 131 away from the channel body 10a1 and extends along the circumference of the barrel body 131. The flange 132 is detachably connected to the end plate 112. The end plate 112 is provided with a first threaded hole 112b, and the flange 132 is provided with a first through-hole 132a. The first through-hole 132a and the first threaded hole 112b are arranged correspondingly. The screw extruder 100 also includes a first fastener 50, which passes through the first through-hole 132a and is threadedly connected to the first threaded hole 112b. There are at least two first threaded holes 112b, and the at least two first threaded holes 112b are arranged at intervals along the circumference of the mounting hole 112a. There are at least two first through-holes 132a, and each first through-hole 132a is arranged correspondingly to a first threaded hole 112b. There are at least two first fasteners 50, and each first fastener 50 passes through a first through-hole 132a and is threadedly connected to a first threaded hole 112b. The end plate 112 is provided with a first positioning portion 1121, and the flange 132 is provided with a second positioning portion 1321. The second positioning portion 1321 cooperates with the first positioning portion 1121 to be configured to position the flange 132. The first positioning portion 1121 is a first positioning hole 1121a provided in the end plate 112, and the second positioning portion 1321 is a second positioning hole 1321a provided in the flange 132. The second positioning hole 1321a and the first positioning hole 1121a are provided correspondingly. The screw extruder 100 also includes a positioning pin 60, which passes through the second positioning hole 1321a and is inserted into the first positioning hole 1121a.A first accommodating groove 112e is provided on the outer side of the end plate 112. The first accommodating groove 112e is connected to the end of the mounting hole 112a away from the channel body 10a1, and the flange 132 is accommodated in the first accommodating groove 112e. The shape of the first accommodating groove 112e is the same as the shape of the flange 132. There are at least two flanges 132, and two of the flanges 132 are provided on opposite sides of the barrel body 131. The flange 132 and the barrel body 131 are an integral structure. The barrel 111 and the end plate 112 are an integral structure. The silo body 11 is provided with a step surface 113 at the connection between the mounting hole 112a and the channel body 10a1. The step surface 113 is provided toward the end of the mounting hole 112a away from the channel body 10a1, and the end of the liner 13 close to the channel body 10a1 abuts against the step surface 113. One of the stepped surface 113 and the lining 13 is provided with an insertion protrusion 1131, and the other is provided with an insertion groove 131a, into which the insertion protrusion 1131 is inserted. There are at least two insertion protrusions 1131, which are arranged at intervals along the circumference of the mounting hole 112a. There are at least two insertion grooves 131a, each of which is inserted into a insertion groove 131a. The inner wall of the discharge channel 10a2 is coated with a chromium coating, a tungsten carbide coating, or a titanium nitride coating. The roughness Ra of the inner wall of the discharge channel 10a2 satisfies the relationship: 0.02≤Ra≤0.8. The liner 13 is made of 45 steel, 40Cr, 35CrMo, 42CrMo, 42CrMo38CrMoAl, polytetrafluoroethylene, polyetheretherketone, or ultra-high molecular weight polyethylene. There are two screws 20, and the discharge channel 10a2 includes two parallel and interconnected sub-channels 10a21, with each screw 20 corresponding to a sub-channel 10a21. At least two of the liners 13 are made of different materials; the shape and size of the discharge channels 10a2 in at least two of the liners 13 are different; and the roughness of the discharge channels 10a2 in at least two of the liners 13 are different.

[0114] The present application also proposes a battery production system, which includes a screw extruder 100. The specific structure of the screw extruder 100 refers to the above embodiment. Since the battery production system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0115] The above description is only a preferred embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made by using the contents of the present application description and drawings under the inventive concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A screw extruder, characterized in that, include: A silo, wherein the silo is provided with a feeding channel, the feeding channel comprises a channel body and a discharge channel, and the discharge channel is connected to the channel body; and A screw, the screw being arranged in the feeding channel; The silo comprises a silo body and at least two linings, wherein the at least two linings can be selectively and detachably connected to the silo body, the channel body is provided on the silo body, and the discharge channel is provided on the lining.

2. The screw extruder according to claim 1, wherein The silo body is provided with a mounting hole, and the mounting hole is communicated with the channel body; The lining is a cylindrical structure with openings at both ends and is inserted into the mounting hole.

3. The screw extruder according to claim 2, characterized in that The silo body comprises: a barrel, wherein at least one end of the barrel is open; and an end plate, the end plate covering the opening at one end of the barrel and enclosing the barrel to form the channel body; The mounting hole is provided on the end plate, and the lining is detachably connected to the end plate.

4. The screw extruder according to claim 3, characterized in that The lining comprises: a barrel body, the barrel body being inserted into the mounting hole, the discharge channel being provided in the barrel body; and A flange is provided at one end of the cylinder body away from the channel body and extends along the circumference of the cylinder body. The flange is detachably connected to the end plate.

5. The screw extruder according to claim 4, characterized in that The end plate is provided with a first threaded hole, the flange is provided with a first through hole, and the first through hole and the first threaded hole are provided correspondingly; The screw extruder further includes a first fastener, which passes through the first penetration hole and is threadedly connected to the first threaded hole.

6. The screw extruder according to claim 4, characterized in that The end plate is provided with a first positioning portion, and the flange is provided with a second positioning portion; The second positioning portion cooperates with the first positioning portion to be configured to position the flange.

7. The screw extruder according to claim 6, characterized in that The first positioning portion is a first positioning hole provided on the end plate, and the second positioning portion is a second positioning hole provided on the flange, wherein the second positioning hole and the first positioning hole are provided correspondingly; The screw extruder further includes a positioning pin passing through the second positioning hole and inserted into the first positioning hole.

8. The screw extruder according to claim 4, wherein A first accommodating groove is provided on the outer side of the end plate, the first accommodating groove is connected to the end of the mounting hole away from the channel body, the flange is accommodated in the first accommodating groove, and the shape of the first accommodating groove is the same as that of the flange.

9. The screw extruder according to claim 4, characterized in that The number of the flanges is at least two, and two of the flanges are arranged on opposite sides of the cylinder body.

10. The screw extruder according to claim 2, characterized in that The silo body is provided with a step surface at the connection between the mounting hole and the channel body, the step surface is arranged toward the end of the mounting hole away from the channel body, and the end of the lining close to the channel body abuts against the step surface.

11. The screw extruder according to claim 10, characterized in that One of the step surface and the lining is provided with an inserting protrusion, and the other one is provided with an inserting groove, and the inserting protrusion is inserted into the inserting groove.

12. The screw extruder according to claim 1, wherein The silo body includes a barrel, at least one end of which is open; The lining is a plate-shaped structure, which is arranged on the outside of the barrel and covers the opening of the barrel.

13. The screw extruder according to claim 12, characterized in that The screw extruder further comprises a clamping member, which is connected to the barrel and cooperates with the barrel to clamp the liner.

14. The screw extruder according to claim 13, wherein The lining comprises: a plate body, the plate body covering an opening at one end of the barrel, the clamping member and the barrel cooperating to clamp the plate body; and A convex seat is convexly arranged on a side of the plate body facing away from the channel body, a portion of the discharge channel is arranged on the plate body, and another portion is arranged on the convex seat.

15. The screw extruder according to claim 14, characterized in that The barrel is provided with a second threaded hole, the plate body is provided with a second through-hole, and the clamping member is provided with a third through-hole, and the second through-hole is provided corresponding to the second threaded hole and the third through-hole; The screw extruder further includes a second fastener, which passes through the third through-hole and the second through-hole and is threadedly connected to the second threaded hole.

16. The screw extruder according to claim 14, wherein The clamping member is a plate-shaped structure and is attached to the side of the plate body facing away from the channel body; The clamping piece is provided with a third positioning hole, and the protrusion is inserted into the third positioning hole.

17. The screw extruder according to any one of claims 1 to 16, characterized in that The inner wall of the discharge channel is provided with a chromium coating, a tungsten carbide coating or a titanium nitride coating; And / or, the roughness Ra of the inner wall of the discharge channel satisfies the relationship: 0.02≤Ra≤0.8; And / or, the lining is made of 45 steel, 40Cr, 35CrMo, 42CrMo, 42CrMo38CrMoAl, polytetrafluoroethylene, polyetheretherketone or ultra-high molecular weight polyethylene; And / or, the number of the screws is two, the discharge channel includes two sub-channels connected side by side, and each screw is provided corresponding to one sub-channel; and / or, at least two of the linings are made of different materials; and / or, the shapes and sizes of the discharge channels in at least two of the lining members are different; And / or, the roughness of the discharge channels in at least two of the linings is different.

18. A battery production system, characterized in that: Comprising the screw extruder according to any one of claims 1 to 17.

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