A preheating roller and electrode production system

Abstract

This utility model relates to a preheating roller and electrode production system, including an inlet pipe, a preheating roller body, and an outlet. A spiral flow channel is provided within the preheating roller body, and both the inlet pipe and the outlet are connected to the spiral flow channel. By adding a spiral flow channel within the preheating roller body, a high-temperature solution enters the preheating roller body through the inlet pipe and flows spirally through the spiral flow channel. Because the preheating roller rotates during operation, the speed of the high-temperature solution flowing through the spiral flow channel is faster than that of the horizontal flow channel. Therefore, it can quickly replenish the temperature carried away by the electrode on the roller surface, thereby ensuring the uniformity of the roller surface temperature.

Description

Technical Field

[0001] This utility model relates to the technical field of heating rollers, and in particular to a preheating roller and electrode production system. Background Technology

[0002] During the electrode production process, the preheating roller removes moisture and internal stress from the electrode by heating it, ensuring the stability and consistency of the electrode during the rolling process.

[0003] The existing preheating roller heats the preheating roller through heat transfer oil and transfers the temperature to the electrode sheet. In order to ensure the heating process of the electrode sheet, the effective roller surface length of the preheating roller is greater than the width of the electrode sheet. The electrode sheet carries away the heat from the contact part of the heated roller surface, resulting in inconsistent roller surface temperature and uneven electrode sheet temperature, which in turn affects the uniformity of electrode sheet thickness. Utility Model Content

[0004] To solve the technical problem of uneven electrode temperature caused by inconsistent surface temperature of the preheating roller, this utility model provides a preheating roller and electrode production system.

[0005] To achieve the above objectives, this utility model provides a preheating roller, comprising an inlet pipe, a preheating roller body, and an outlet, wherein the inlet pipe and the outlet are both connected to the preheating roller body; a spiral flow channel is provided within the preheating roller body.

[0006] Furthermore, the preheating roller body includes an inlet pipe, a preheating roller body, and an outlet. A spiral flow channel is provided inside the preheating roller body, and both the inlet pipe and the outlet are connected to the spiral flow channel.

[0007] Furthermore, a first flow channel is provided inside the preheating roller inner liner, extending transversely. The first end of the first flow channel is connected to the inlet pipe, and a first gap is provided between the second end of the first flow channel and the side wall of the preheating roller outer liner.

[0008] Furthermore, the spiral flow channel is provided on the radial inner wall of the preheating roller outer liner, and a second gap is provided between the radial inner wall of the preheating roller outer liner and the radial outer wall of the preheating roller inner liner. The first flow channel, the first gap, the second gap and the spiral flow channel are connected.

[0009] Furthermore, a third gap is provided between the second end of the first flow channel and the outer liner of the preheating roller, and the second gap is connected to the outlet through the third gap.

[0010] Furthermore, the preheating roller also includes a rotary joint, which includes a rotary joint inner ring and a rotary joint housing. The rotary joint inner ring is rotatably fixed to the radially inner side of the rotary joint housing. The rotary joint housing is fixed to the inlet pipe. A fourth gap is provided between the rotary joint inner ring and the inlet pipe. The preheating roller body has a gap that communicates with the spiral flow channel. The gap, the fourth gap, and the outlet are connected.

[0011] Furthermore, the rotary joint also includes an elastic element and a first sealing element. Both the elastic element and the first sealing element are fitted onto the outer wall of the inlet pipe. One end of the elastic element abuts against the inner wall of the outlet. The first sealing element is disposed between the elastic element and the inner ring of the rotary joint.

[0012] Furthermore, it also includes a second seal, which is sleeved on the outer wall of the inlet pipe, and the radial outer wall of the second seal abuts against the radial inner wall of the preheating roller liner.

[0013] Furthermore, the pitch of the spiral channel located in the middle of the preheating roller body is smaller than the pitch of the spiral channels located at both ends of the preheating roller body.

[0014] Another objective of this embodiment is to provide an electrode production system that includes the aforementioned preheating roller.

[0015] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0016] (1) A spiral flow channel is added to the body of the preheating roller. The high temperature solution enters the body of the preheating roller through the inlet pipe and flows in a spiral shape through the spiral flow channel. Since the preheating roller rotates when it is working, the speed of the high temperature solution in the spiral flow channel is faster than that in the horizontal flow channel. Therefore, it can quickly replenish the temperature carried away by the electrode on the roller surface, thereby ensuring the uniformity of the roller surface temperature.

[0017] (2) The spiral flow channel is set on the radial inner wall of the preheating roller outer shell to reduce the thickness of the preheating roller shell and improve the heat transfer efficiency between the preheating roller and the electrode.

[0018] (3) The rotary joint includes an elastic element and a first sealing element to prevent heat transfer oil from leaking out of the rotary joint;

[0019] (4) A second sealing element is fitted on the outer wall of the inlet pipe to prevent the outflowing heat transfer fluid from mixing with the inflowing heat transfer fluid, which would affect the temperature of the inflowing heat transfer fluid. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a front sectional view of the preheating roller of this utility model;

[0022] Figure 2 This is a front sectional view of the preheating roller body of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the preheating roller of this utility model;

[0024] Figure 4 This is a rear sectional view of the inlet pipe of this utility model.

[0025] Explanation of reference numerals in the accompanying drawings: Inlet pipe - 1; Preheating roller body - 2; Preheating roller outer liner - 21; Preheating roller inner liner - 22; First flow channel - 22-1; Outlet - 3; Spiral flow channel - 4; Rotary joint - 5; Rotary joint inner ring - 51; Rotary joint housing - 52; Elastic element - 53; First seal - 54; Second seal - 6. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0029] This utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, deviating from the general scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0030] Furthermore, in the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," or "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" in this utility model should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integrated connections; similarly, they can refer to mechanical connections, electrical connections, or direct connections, or indirect connections through an intermediate medium, or internal connections between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0032] Example 1

[0033] like Figures 1-4 As shown in the figure, a preheating roller provided in this embodiment of the present invention includes an inlet pipe 1, a preheating roller body 2, and an outlet 3. A spiral flow channel 4 is provided inside the preheating roller body 2. Both the inlet pipe 1 and the outlet 3 are connected to the spiral flow channel 4. By introducing a high-temperature solution into the spiral flow channel 4 inside the preheating roller body 2, the temperature of the preheating roller body 2 is increased. The electrode sheet is in contact with the preheating roller body 2 and absorbs the heat of the preheating roller body 2. The solution introduced into the preheating roller body 2 is oil-based. Oil-based solutions have the characteristics of high heat transfer efficiency and do not produce scale, making them easy to control. Temperature control is achieved by the heat transfer fluid entering the spiral channel 4 in the preheating roller body 2 and then exiting from the outlet 3. When the preheating roller body 2 is heated and rotated, the heat transfer fluid flows rapidly in a spiral shape in the spiral channel 4, increasing the flow speed of the heat transfer fluid and quickly replenishing the temperature carried away by the electrode, thus achieving the effect of rapid heat exchange. In this embodiment, by setting the spiral channel 4 in the preheating roller body 2, the heating area of ​​the heat transfer fluid is increased. The larger the heating area, the faster the heating efficiency, thereby reducing the temperature difference in the longitudinal height caused by the heating of the electrode in the preheating roller body 2 and improving the uniformity of the temperature on the surface of the preheating roller.

[0034] It should be noted that in practical applications, the pitch parameter of the spiral channel 4 can be adjusted according to the electrode processing requirements, thereby controlling the surface heating efficiency of the preheating roller body 2 and maintaining the uniformity of the transverse temperature of the preheating roller.

[0035] It should be further explained that the first end of the preheating roller body 2 is provided with a support end, and the second end is provided with a transmission end. The middle part of the support end is provided with an opening, and the inlet pipe 1 and the outlet 3 are connected to the preheating roller body 2 through the opening to support the preheating roller. The transmission end is fixed to be connected to an external motor to drive the preheating roller to rotate. The rotation agitates the heat transfer liquid introduced into the preheating roller body 2, thereby improving the heat transfer efficiency.

[0036] In one embodiment, refer to Figure 2 The preheating roller body 2 includes a preheating roller outer liner 21 and a preheating roller inner liner 22. A gap is provided between the preheating roller outer liner 21 and the preheating roller inner liner 22. The gap is connected to the spiral flow channel 4. The electrode plate is attached to the radial outer wall of the preheating roller outer liner 21 to absorb the heat of the preheating roller outer liner 21. The heat transfer fluid flows in the gap between the preheating roller outer liner 21 and the preheating roller inner liner 22 to reduce the heat transfer distance of the heat transfer fluid and accelerate the heat transfer efficiency.

[0037] It should be noted that the preheating roller inner liner 22 has a hollow structure, which can reduce the weight of the preheating roller inner liner 22, reduce the requirements for rotational strength, and facilitate the switching between high and low speeds of the equipment.

[0038] In one embodiment, a first flow channel 22-1 is provided in the inner liner of the preheating roller 22, which runs horizontally through the inner liner. The first end of the first flow channel 22-1 is connected to the inlet pipe 1. A first gap A is provided between the second end of the first flow channel 22-1 and the side wall of the outer liner of the preheating roller 21. The heat transfer liquid flows into the first flow channel 22-1 from the inlet pipe 1 and then into the first gap A. The heat transfer liquid comes into contact with the outer liner of the preheating roller 21, thereby realizing the heat transfer to the outer liner of the preheating roller 21.

[0039] In one embodiment, a spiral flow channel 4 is provided on the radial inner wall of the preheating roller outer liner 21, and a second gap B is provided between the radial inner wall of the preheating roller outer liner 21 and the radial outer wall of the preheating roller inner liner 22. The first flow channel 22-1, the first gap A, the second gap B and the spiral flow channel 4 are connected. The heat transfer liquid flows into the first flow channel 22-1 from the inlet pipe 1 and flows through the first gap A and the second gap B to reach the spiral flow channel 4. The first gap A and the second gap B provide a flow path for the heat transfer liquid to flow into the spiral flow channel 4. Setting the spiral flow channel 4 on the radial inner wall of the preheating roller outer liner 21 can reduce the wall thickness of the preheating roller outer liner 21 and shorten the heat transfer distance. On the other hand, it can increase the heat transfer area of ​​the inner wall of the preheating roller outer liner 21 and further improve the heat transfer efficiency.

[0040] In one embodiment, a third gap C is provided between the second end of the first flow channel 22-1 and the preheating roller outer liner 21. The second gap B is connected to the outlet 3 through the third gap C. The third gap C connects the second gap B and the outlet 3. The heat transfer liquid enters the first flow channel 22-1 from the inlet pipe 1 and is transported to the spiral flow channel 4 through the first gap A and the second gap B, transferring heat to the electrode sheet that is in contact with the preheating roller outer liner 21. After heat transfer, the solution is discharged from the third gap C and the outlet 3, completing the heat transfer process.

[0041] In one embodiment, refer to Figure 3 and 4 The preheating roller also includes a rotary joint 5, which includes an inner ring 51 and a housing 52. The inner ring 51 is rotatably fixed to the radially inner side of the housing 52. The housing 52 is fixed to the inlet pipe 1. When the preheating roller starts to rotate, the inner ring 51 can rotate simultaneously with the preheating roller, while the housing 52 remains stationary. A fourth gap D is provided between the inner ring 51 and the inlet pipe 1. The preheating roller body 2 has a gap that communicates with the spiral flow channel 4. The gap D and the outlet 3 are connected. The heat transfer fluid is introduced into the outlet 3 through the fourth gap D from the gap, and the heat transfer fluid is discharged. It should be noted that the gaps connected to the spiral flow channel 4 inside the preheating roller body 2 can be the first gap A, the second gap B and the third gap C. The heat transfer fluid is introduced into the first flow channel 22-1 from the inlet pipe 1 and then enters the first gap A and the second gap B. After heat conduction through the spiral flow channel 4, it is transported to the outlet 3 from the third gap C and the fourth gap D and discharged, completing the oil entry and exit process of the heat transfer fluid inside the preheating roller body 2.

[0042] In one embodiment, the rotary joint 5 further includes an elastic element 53 and a first sealing element 54. Both the elastic element 53 and the first sealing element 54 are fitted onto the outer wall of the inlet pipe 1. One end of the elastic element 53 abuts against the inner wall of the outlet 3. The first sealing element 54 is disposed between the elastic element 53 and the inner ring 51 of the rotary joint. In this embodiment, both the elastic element 53 and the first sealing element 54 include a first end and a second end. The first end of the elastic element 53 abuts against the inner wall of the outlet 3, and the second end of the elastic element 53 is connected to the first end of the first sealing element 54. The second end of the first sealing element 54 abuts against the inner ring 51 of the rotary joint. The first sealing element 54 abuts at the connection position between the inner ring 51 of the rotary joint and the rotary joint housing 52. Since the inner ring 51 of the rotary joint and the rotary joint housing 52 rotate relative to each other, a certain displacement may occur during their movement. The elastic element 53 abuts against the first sealing element 54 to absorb the displacement and adjust its position accordingly, thereby achieving a sealing effect and preventing the heat transfer fluid from leaking out between the inner ring 51 of the rotary joint and the rotary joint housing 52 during the process of flowing to the outlet 3.

[0043] In one embodiment, refer to Figure 1 and 4 It also includes a second sealing element 6, which is sleeved on the outer wall of the inlet pipe 1. The radial outer wall of the second sealing element 6 abuts against the radial inner wall of the preheating roller inner liner 22. In the embodiment, the second sealing element 6 is far away from the outlet 3 relative to the third gap C, so that the heat-conducting liquid after heat transfer in the third gap C flows into the fourth gap D and cannot flow to the first flow channel 22-1, thus avoiding the heat-conducting liquid after heat transfer from mixing with the heat-conducting liquid in the inlet pipe 1 and affecting the temperature of the heat-conducting liquid in the inlet pipe 1.

[0044] It should be noted that the second sealing element 6 includes a sealing part and a protrusion. At least one protrusion is provided and fixed on the outer wall of the inlet pipe 1. When there is one protrusion, the upper end of the protrusion is bent, and a groove is formed between the protrusion and the inlet pipe 1. The sealing part abuts in the groove between the protrusion and the inlet pipe 1 to achieve a sealing effect. When there are multiple protrusions, the sealing part abuts between the multiple protrusions to achieve the same sealing effect.

[0045] In one embodiment, the pitch of the spiral channel 4 located in the middle of the preheating roller body 2 is smaller than the pitch of the spiral channels 4 located at both ends of the preheating roller body 2. The middle part of the preheating roller body 2 is in contact with the electrode plate for heat transfer. When the pitch is smaller, the flow rate of the heat transfer fluid is faster, which further accelerates the heat transfer speed in the middle of the preheating roller body 2, shortens the heating time, and further reduces the lateral temperature difference of the preheating roller body 2.

[0046] The working principle of the preheating roller in this embodiment is as follows: When the preheating roller is working, the electrode is attached to the middle of the outer wall of the preheating roller outer shell 21. The preheating roller body 2 rotates, and the heat transfer fluid flows from the inlet pipe 1 into the first flow channel 22-1, and then flows through the first gap A and the second gap B to the spiral flow channel 4. Due to the rotation of the preheating roller body 2, the heat transfer fluid flows through the spiral flow channel 4, transferring heat to the electrode attached to the outer wall of the preheating roller outer shell 21. The flow rate of the heat transfer fluid in the spiral flow channel 4 increases, thus replenishing the heat of the outer wall of the preheating roller outer shell 21 in a timely manner and avoiding heat transfer due to the electrode. The heat transfer fluid, after heat transfer, flows into the outlet 3 through the third gap C and the fourth gap D and returns to the oil tank, thus completing the heat transfer process of the heat transfer fluid in the preheating roller body 2. The spiral flow channel 4 in the preheating roller body 2 accelerates the flow speed of the heat transfer fluid, quickly replenishes the absorbed heat, maintains the lateral temperature difference of the preheating roller body 2, ensures the consistency of the electrode temperature, and avoids affecting the uniformity of the electrode thickness. Furthermore, the spiral flow channel 4 is set on the outer wall of the preheating roller outer liner 21, which shortens the heat transfer distance, increases the heat transfer area, and improves the heat transfer efficiency.

[0047] Example 2

[0048] Unlike the above embodiments, this embodiment provides an electrode production system. This electrode production system is equipped with the aforementioned preheating roller. The inner wall of the outer liner of the preheating roller is provided with spiral channels of varying pitches, which increases the mixing and disturbance between the heat transfer fluid and the channels, enhances the efficiency of heat transfer, ensures the uniformity of the surface temperature of the preheating roller, and thus ensures the consistency of the transverse temperature of the electrode. The temperature difference of the electrode is small, so that the longitudinal thickness of the electrode is consistent after the roller is pressed.

[0049] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A preheating roller, characterized in that, It includes an inlet pipe (1), a preheating roller body (2) and an outlet (3). The preheating roller body (2) is provided with a spiral flow channel (4). The inlet pipe (1) and the outlet (3) are both connected to the spiral flow channel (4). The preheating roller body (2) includes a preheating roller outer liner (21) and a preheating roller inner liner (22). A gap is provided between the preheating roller outer liner (21) and the preheating roller inner liner (22), and the gap is connected to the spiral flow channel (4). A first flow channel (22-1) is provided in the preheating roller inner liner (22) and extends transversely. The first end of the first flow channel (22-1) is connected to the inlet pipe (1), and a first gap (A) is provided between the second end of the first flow channel (22-1) and the side wall of the preheating roller outer liner (21). The spiral flow channel (4) is provided on the radial inner wall of the preheating roller outer liner (21). A second gap (B) is provided between the radial inner wall of the inner liner (21) and the radial outer wall of the inner liner (22) of the preheating roller. The first flow channel (22-1), the first gap (A), the second gap (B) and the spiral flow channel (4) are connected. A third gap (C) is provided between the second end of the first flow channel (22-1) and the outer liner (21) of the preheating roller. The second gap (B) is connected to the outlet (3) through the third gap (C). The pitch of the spiral flow channel (4) provided in the middle of the preheating roller body (2) is smaller than the pitch of the spiral flow channel (4) provided at both ends of the preheating roller body (2).

2. The preheating roller according to claim 1, characterized in that The preheating roller also includes a rotary joint (5), which includes a rotary joint inner ring (51) and a rotary joint housing (52). The rotary joint inner ring (51) is rotatably fixed to the radial inner side of the rotary joint housing (52). The rotary joint housing (52) is fixed to the inlet pipe (1). A fourth gap (D) is provided between the rotary joint inner ring (51) and the inlet pipe (1). The preheating roller body (2) has a gap that communicates with the spiral flow channel (4). The gap, the fourth gap (D), and the outlet (3) are connected.

3. The preheating roller according to claim 2, characterized in that The rotary joint (5) further includes an elastic element (53) and a first sealing element (54). The elastic element (53) and the first sealing element (54) are both fitted onto the outer wall of the inlet pipe (1). One end of the elastic element (53) abuts against the inner wall of the outlet (3). The first sealing element (54) is disposed between the elastic element (53) and the inner ring (51) of the rotary joint.

4. The preheating roller of claim 1, wherein It also includes a second seal (6), which is sleeved on the outer wall of the inlet pipe (1), and the radial outer wall of the second seal (6) abuts against the radial inner wall of the preheating roller liner (22).

5. A pole piece production system characterized by, Includes the preheating roller as described in any one of claims 1 to 4.

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