Stainless steel filter element air floating roller and drying oven

Abstract

The stainless steel filter element air floating roller comprises an outer roller body and a pressure equalizing pipe arranged in the outer roller body, a second cavity is formed between the outer roller body and the pressure equalizing pipe, a first cavity is formed in the pressure equalizing pipe, the outer roller body comprises a plurality of net structures which are arranged in a stacked mode, and the outer roller body comprises a plurality of net structures which are arranged in a stacked mode. The multiple layers of net structures are arranged in a staggered mode, and a plurality of air outlet slits are formed in the pressure equalizing pipe. The drying oven comprises a drying oven body, and a stainless steel filter element air floating roller is installed in the drying oven body. The roller has the advantages that a uniform and stable air film can be formed on the roller surface, and effective support is provided for the pole piece.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery production technical field, especially a stainless steel filter core air -float roller and oven. BACKGROUND

[0002] In the technical field of lithium battery, the pole piece is coated by foil, and the double-sided coating has the advantages of high production efficiency, good product quality and energy saving. Because the two sides of the pole piece are coated with slurry, if a solid roller is used for support before drying, the solid roller will adhere the slurry on one side of the pole piece, damaging the coating. In the existing technology, the non-contact support of the pole piece is mainly realized by the air float roller. The air float roller is provided with a plurality of air outlets on the outer periphery of the winding drum, and the air flow is blown out through the plurality of air outlets at the same time, the air float force formed by the air flow lifts the base material, and the non-contact type running of the base material is realized.

[0003] However, the air outlet aperture of the existing air float roller is large, and the air outlet speed is fast, so that the air flow velocity on the roller surface is high, the dynamic pressure is large, and the static pressure is small. The pole piece cannot form a uniform air film under the condition of large tension, and there is a scraping phenomenon. Because the air flow velocity is high, the base material shakes irregularly when supporting the wet coating film, affecting the stability of the coating.

[0004] Therefore, the utility model aims at providing a new technical scheme to solve the existing technical problems. UTILITY MODEL CONTENTS

[0005] In order to overcome the defects of the prior art, the utility model provides a stainless steel filter core air float roller and oven, which solves the problem that the existing air float roller cannot form a uniform air film, and the sheet material on the air float roller is prone to shaking and scraping.

[0006] The utility model adopts the technical scheme that:

[0007] A stainless steel filter core air float roller, comprising an outer roller body and a pressure equalizing pipe arranged in the inner part of the outer roller body, a second cavity is formed between the outer roller body and the pressure equalizing pipe, the pressure equalizing pipe has a first cavity in it, the outer roller body comprises a plurality of stacked net structures, and the plurality of net structures are arranged in a staggered manner, a plurality of air outlet slits are formed in the pressure equalizing pipe.

[0008] In the above structure, the outer roller body is a stainless steel filter core structure.

[0009] In the above structure, the both ends of the pressure equalizing pipe are provided with side covers in a ring structure, and the pressure equalizing pipe, the stainless steel filter core and the side covers are connected and fixed by full welding process.

[0010] In the above structure, it further comprises air valves, the side covers on the both sides are fixedly connected with air inlet flange joints, and the air valves are connected with the air inlet flange joints on the both sides respectively.

[0011] In the above structure, the air inlet flange joint is provided between the side cover and the rubber sealing ring.

[0012] In the above structure, the air outlet slits are symmetrically arranged at both ends of the pressure equalizing pipe, and are uniformly distributed on the circumferential surface of both ends of the pressure equalizing pipe.

[0013] In the above structure, the length direction of the air outlet slit is parallel to the axial direction of the pressure equalizing pipe, the width of the air outlet slit is 1-2mm, and the length of the air outlet slit is 60-100mm.

[0014] In the above structure, the porosity of the stainless steel filter core is 40%-70%, and the pore size is 1-3um.

[0015] The utility model also provides:

[0016] A drying oven, including drying oven body, the drying oven body is installed with the stainless steel filter core air floatation roller of structure as above.

[0017] The utility model discloses a stainless steel filter core air floatation roller and drying oven, the stainless steel filter core air floatation roller utilizes pressure equalizing pipe and carries out preliminary pressure equalization to the input gas, then is transported to the outer roller body through the air outlet slit, the outer roller body includes the net -like structure of laminated arrangement, and the tortuosity is higher, can further decelerate the airflow, and then exports the air pressure that is more uniform, under the pole piece tension, the roller surface can form the uniform air film, provides the support force for pole piece, effectively reduces the shaking and the scratch of the sheet material on the air floatation roller. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model is further explained below in combination with the drawings and examples.

[0019] Figure 1 It is the whole structure schematic diagram of the utility model;

[0020] Figure 2 It is Figure 1 A-A section schematic diagram in;

[0021] Figure 3 It is the structure split schematic diagram of the utility model.

[0022] Reference signs: 1, outer roller body;11, second cavity;2, pressure equalizing pipe;21, first cavity;22, air outlet slit;23, side cover;24, air inlet flange joint;3, gas valve;4, rubber sealing ring. DETAILED DESCRIPTION

[0023] The utility model is further explained below in combination with the drawings and examples. Figures 1-3 The utility model is further explained below in combination with the drawings and examples.

[0024] The concept, specific structure and generated technical effects of the utility model will be described clearly and completely in combination with the embodiments and drawings, so as to fully understand the purpose, features and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, and other embodiments obtained by the person skilled in the art without creative labor based on the embodiments of the utility model all belong to the protection scope of the utility model. In addition, all the coupling / connection relations involved in the patent do not mean that the components directly connect, but means that the more optimal coupling structure can be composed by adding or reducing the coupling auxiliary components according to the specific implementation situation. The various technical features in the utility model creation can be interactively combined without mutual contradiction and conflict.

[0025] With reference to Figure 1 and Figure 2 The utility model provides a stainless steel filter element air floatation roller, including outer roller body 1 and the pressure equalizing pipe 2 who sets in the outer roller body 1 inside, the second cavity 11 is formed between outer roller body 1 and pressure equalizing pipe 2, the first cavity 21 has in pressure equalizing pipe 2, and outer roller body 1 includes a plurality of layering setting net structure, and the multilayer net structure is staggered arrangement, is equipped with a plurality of air outlet slits 22 on pressure equalizing pipe 2. Wherein the first cavity 21 and the second cavity 11 are communicated through air outlet slit 22, after gas enters into the first cavity 21, pressure equalizing pipe 2 carries out pressure reduction to gas, and the gas after pressure reduction enters into the second cavity 11 from air outlet slit 22. The setting of air outlet slit 22 on pressure equalizing pipe 2 can carry out preliminary pressure equalization to gas, so that the pressure and flow rate of the gas entering the second cavity 11 are more uniform than the gas in the first cavity 21. Since outer roller body 1 is formed by a plurality of net structure layering settings, the gas in the second cavity 11 will be output from the mesh of outer roller body 1, and a relatively uniform gas film is formed on the surface of outer roller body 1. Further, the multilayer net structure is staggered arrangement, so that outer roller body 1 has higher tortuosity, further reduces the gas flow rate, so that the formed gas film is more uniform.

[0026] In the embodiment, the outer roller body 1 is a stainless steel filter core structure, which is usually composed of multiple layers of stainless steel sintered mesh, has small structure aperture and high tortuosity, and when gas passes through the microporous structure on the stainless steel filter core structure, the gas is affected by the skeleton structure in the filter core, the flow rate of the gas discharged from the micropore is further reduced, and because the micropore is small, the gas cannot enter the outer roller body 1, so under the action of the pole piece tension, the static gas pressure of the roller surface of the outer roller body 1 is increased, a stable and uniform gas film is formed, and support force is provided for the pole piece. The porosity of the stainless steel filter core is 40%-70%, and the pore size is 1-3 microns. In other embodiments, the implementer can select other structure forms of the outer roller body 1 structure according to specific implementation conditions and environments, and all structures based on the basic concept belong to the protection scope of the utility model.

[0027] Further, the side covers 23 in ring structures are arranged at both sides of the equalizing pipe 2, the side covers 23 are sleeved on both sides of the equalizing pipe 2, the equalizing pipe 2, the stainless steel filter core and the side covers 23 are connected and fixed by full welding process, so that the equalizing pipe 2, the stainless steel filter core and the side covers 23 form an integral whole, and the stainless steel filter core, the equalizing pipe 2 and the side covers 23 divide the internal cavity of the air floatation roller into the first cavity 21 and the second cavity 11. The three are connected and fixed by the full welding process, the connection strength is effectively guaranteed, and good sealing performance is provided. And because the welding is used for fixing, the stainless steel filter core air floatation roller of the utility model can be used in a high-temperature environment in an oven, and the use range is increased.

[0028] Further, the stainless steel filter core air floatation roller further comprises gas valves 3, the air inlet flange joints 24 are fixedly connected to the two side covers, and the two gas valves 3 are connected with the air inlet flange joints 24 on the two sides. The air inlet flange joints 24 and the side covers 23 can be connected and fixed by bolts and other fasteners. The gas valves 3 arranged at the two ends can adjust the air inlet amount on the two sides, so as to dynamically adjust the pressure on the two sides of the air floatation roller, and further adjust the floating height on the two sides of the pole piece, and the problem of uneven floating height of the pole piece on the two sides caused by uneven tension can be compensated.

[0029] Further, the rubber sealing rings 4 are arranged between the air inlet flange joints 24 and the side covers 23, and the rubber sealing rings 4 seal the connection positions of the air inlet flange joints 24 and the side covers 23, so as to reduce the possibility of air leakage in the use process.

[0030] Further, the air outlet slits 22 are symmetrically arranged at both ends of the pressure equalizing pipe 2, the air outlet slits 22 are uniformly distributed at both ends, and the length direction of the air outlet slits 22 is parallel to the axial direction of the pressure equalizing pipe 2. In the embodiment, the width of the air outlet slit 22 is between 1-2mm, and the length is between 60-100mm. In other embodiments, the implementer can set the width and length of the air outlet slit 22 according to specific implementation conditions and environment, and all structures based on the basic concept belong to the protection scope of the utility model.

[0031] Based on the above-mentioned stainless steel filter element air floating roller, the utility model provides a kind of:

[0032] A kind of oven, including oven body, the stainless steel filter element air floating roller of above-mentioned structure is installed in oven body.

[0033] The above is the specific description of the preferred implementation of the utility model, but the utility model creation is not limited to the described embodiment, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the utility model, these equivalent modifications or replacements are all included in the range defined in the application claims.

Claims

1. A stainless steel filter core air floatation roller characterized by: The outer roller body and the pressure equalizing pipe are arranged inside the outer roller body, the second cavity is formed between the outer roller body and the pressure equalizing pipe, the first cavity is arranged in the pressure equalizing pipe, the outer roller body comprises a plurality of stacked mesh structures, and the plurality of mesh structures are arranged in a staggered manner, and a plurality of air outlet slits are arranged on the pressure equalizing pipe.

2. A stainless steel filter element air floatation roller as claimed in claim 1, wherein: The outer roller body is a stainless steel filter core structure.

3. A stainless steel filter element air floatation roller as claimed in claim 2, wherein: The two ends of the pressure equalizing pipe are provided with annular side covers, and the pressure equalizing pipe, the stainless steel filter core and the side covers are connected and fixed by full welding.

4. A stainless steel filter element air floatation roller as claimed in claim 3, wherein: The side covers are provided with air inlet flange joints, and the air valves are connected with the air inlet flange joints.

5. A stainless steel filter element air floatation roller as defined in claim 4, wherein: The air inlet flange joints are provided with rubber sealing rings.

6. A stainless steel filter element air floatation roller as defined in claim 1, wherein: The air outlet slits are symmetrically arranged at the two ends of the pressure equalizing pipe and are uniformly distributed on the circumferential surfaces of the two ends of the pressure equalizing pipe.

7. The stainless steel filter cartridge air float roller of claim 1, wherein: The length direction of the air outlet slit is parallel to the axial direction of the pressure equalizing pipe, the width of the air outlet slit is 1-2 mm, and the length of the air outlet slit is 60-100 mm.

8. A stainless steel filter element air floatation roller as defined in claim 2, wherein: The porosity of the stainless steel filter core is 40%-70%, and the pore size is 1-3 μm.

9. An oven characterized by: The oven body is provided with the stainless steel filter core air floating roller.

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