Spraying device and extraction system
By designing the curved spray pipe and liquid inlet assembly, the problem of poor spray consistency was solved, achieving uniform spraying and stable delivery of the diaphragm, reducing diaphragm shrinkage and wrinkles, and improving diaphragm quality.
Patent Information
- Application Number
- CN202423323549.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-31
AI Technical Summary
In the existing technology, the spray pipes are arranged transversely along the diaphragm, resulting in poor spray consistency, which leads to diaphragm shrinkage and wrinkling, especially on thinner and wider diaphragms.
The spray pipe adopts a curved spray pipe design, which has multiple nozzles and forms a bend. The liquid inlet assembly is located at the connection of the bend. The nozzles gradually approach the film in the direction away from the liquid inlet assembly, and the nozzle spacing is adjusted to achieve uniform spray pressure.
It improves spray consistency, reduces diaphragm shrinkage and wrinkles, and enhances the appearance quality and dimensional stability of the film.
Smart Images
Figure CN223671911U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of diaphragm production equipment, and particularly relates to a spraying device and an extraction system. BACKGROUND
[0002] In the production of lithium battery diaphragm by wet method, polyethylene and paraffin oil are mixed and extruded to form a thick sheet, the thick sheet is stretched in the longitudinal and transverse directions to form a thinner oil film with strength in two directions. The oil film is driven by rollers and continuously extracted in an extraction tank filled with solvent. After extraction, the solvent is dried and baked, and then the lithium battery diaphragm base film is obtained by high-temperature stretching and setting and winding. During the extraction process, a spraying pipe along the transverse direction of the diaphragm is usually arranged to spray the diaphragm, as shown in FIG. 1. On the one hand, the impurities adhered to the surface of the diaphragm are washed away, and on the other hand, the amount of extraction liquid can be reduced. Figure 1
[0003] In the related art, the spraying pipe is arranged along the transverse direction of the diaphragm, the spraying pipe is a straight pipe, the liquid inlet is arranged at one end of the spraying pipe, and the spraying openings are arranged on the side facing the diaphragm and have the same distance to the diaphragm. As the pipe length increases, the pressure of the nozzle far from the liquid inlet decreases, resulting in poor spraying consistency. Moreover, as the width of the diaphragm increases, the pressure difference between the position close to the liquid inlet and the position far from the liquid inlet increases, and the impact force on the transverse film surface is inconsistent, resulting in shrinkage of the diaphragm and wrinkles, which are more obvious on thinner diaphragms. CONTENT OF THE INVENTION
[0004] Therefore, the present application provides a spraying device and an extraction system to solve one of the technical problems in the prior art.
[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:
[0006] In a first aspect, the present application provides a spraying device, comprising:
[0007] a spraying assembly, comprising a spraying pipe, the spraying pipe being provided with a plurality of nozzles, the plurality of nozzles being arranged at intervals along the extension direction of the spraying pipe, and the spraying pipe being bent and forming at least two bending segments;
[0008] a liquid inlet assembly arranged at the connection between adjacent two bending segments, the liquid inlet assembly being in communication with the spraying pipe, and the plurality of nozzles arranged at intervals gradually approaching the diaphragm to be sprayed in the direction away from the liquid inlet assembly.
[0009] In one of the embodiments of the first aspect, the bending segment is linear or arc-shaped.
[0010] In one of the embodiments of the first aspect, the liquid inlet assembly comprises:
[0011] The joint member has two moving ends;
[0012] Two connecting pipes, one of which is connected with one of the moving ends, and the other of which is connected with one of the bending sections;
[0013] The axes of the two connecting pipes intersect and form an included angle, and the moving ends drive the connecting pipes to rotate around the joint member to change the size of the included angle.
[0014] In one of the embodiments of the first aspect, the liquid inlet assembly further comprises:
[0015] A liquid inlet pipe, which is connected with each of the connecting pipes;
[0016] A first valve, which is arranged on the liquid inlet pipe.
[0017] In one of the embodiments of the first aspect, the spraying assembly further comprises:
[0018] At least two second valves, one of which is arranged on one of the bending sections, and the second valve is arranged on the side of the bending section away from the liquid inlet assembly.
[0019] In one of the embodiments of the first aspect, in the direction away from the liquid inlet assembly, the nozzle gradually approaches the film to be sprayed in the first direction and / or the second direction, the first direction is perpendicular to the film surface of the film to be sprayed and away from the film to be sprayed, and the first direction and the second direction are perpendicular.
[0020] In one of the embodiments of the first aspect, the nozzle is movably connected with the spraying pipe to adjust the spray angle of the nozzle.
[0021] In the second aspect, the embodiments of the present application further provide an extraction system, which comprises:
[0022] At least one of the above-mentioned spraying devices;
[0023] A conveying device, which is used to convey a film, the film has an inner side and an outer side arranged oppositely, and the spraying device faces the inner side or the outer side of the film.
[0024] In one of the embodiments of the second aspect, the conveying device comprises:
[0025] A first roller group, which comprises a plurality of first roller shafts arranged in parallel;
[0026] A second roller group is arranged in a second direction and spaced apart from the first roller group, the second roller group comprising a plurality of second roller shafts arranged in parallel, the first roller shafts and the second roller shafts are both parallel to a third direction, and the first roller shafts and the second roller shafts are arranged alternately in a first direction, the first direction, the second direction and the third direction are perpendicular to each other.
[0027] In one of the embodiments of the second aspect, the nozzles of the spray pipe are directed towards the film and form a spray line on the film, the spray line extends along the third direction; in the second direction, the spray line is located between a first roller shaft and a second roller shaft.
[0028] Compared with the prior art, the application has the beneficial effects that: the application provides a spraying device, which comprises a spraying assembly and a liquid inlet assembly, the spraying assembly comprises a spray pipe, the spray pipe is provided with a plurality of nozzles, the plurality of nozzles are arranged at intervals along the extension direction of the spray pipe, and the spray pipe is curved and forms at least two bending sections; the liquid inlet assembly is arranged at the connection between two adjacent bending sections, the liquid inlet assembly is in communication with the spray pipe, and the plurality of nozzles arranged at intervals gradually approach the film to be sprayed in the direction away from the liquid inlet assembly. By adjusting the distance between the nozzles and the film to be sprayed, the nozzles far from the liquid inlet assembly are arranged to be closer to the film to be sprayed, the spraying pressure on the film close to the liquid inlet is equivalent to the spraying pressure on the film far from the liquid inlet, the film is subjected to more uniform force, and the consistency of spraying is improved. BRIEF DESCRIPTION OF DRAWINGS
[0029] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.
[0030] Figure 1 A structure schematic diagram of an extraction system in the related art is shown;
[0031] Figure 2 A structure schematic diagram of an extraction system in some embodiments of the application is shown;
[0032] Figure 3 A structure schematic diagram of a spraying device in some embodiments of the application along the second direction is shown;
[0033] Figure 4 A structure schematic diagram of a spraying device in some embodiments of the application along the first direction is shown;
[0034] Figure 5A structural schematic view of the spraying device in some embodiments of the present application along the third direction is shown.
[0035] Main element symbol explanation: 1000-extraction system; D1-first direction; D2-second direction; D3-third direction;
[0036] 100-spraying device; 111-spraying pipe; 1111-bent section; 112-nozzle; 113-second valve; 121-liquid inlet pipe; 122-first valve; 130-spraying line;
[0037] 200-conveying device; 210-first roller group; 211-first roller shaft; 220-second roller group; 221-second roller shaft;
[0038] 300-film. DETAILED DESCRIPTION
[0039] The embodiments of the present application are described in detail below with reference to the accompanying drawings. Examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only, and are merely used to explain the present application, and cannot be understood as a limitation of the present application.
[0040] In the description of the present application, it should be understood that the terms “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential” and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.
[0041] In addition, the terms “first” and “second” are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with “first” and “second” can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of “a plurality of” is two or more, unless otherwise specifically limited.
[0042] In this application, unless specifically defined otherwise, the terms "mounting", "connected", "connection", "fixed", and the like should be construed broadly and do not necessarily mean fixedly connected, but can be removably connected, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0043] In this application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0044] As shown in Figure 1 The related art extraction system sprays the film with horizontal double-sided or single-sided spray pipes. The spray pipe penetrates transversely, and the spray pipe is liquid-inlet from the end, and the pressure pump delivers high-pressure pure extraction solvent to spray the film surface to realize surface impurity cleaning and increase extraction efficiency.
[0045] However, in the case of a large film width, as the flow distance of the solvent in the spray pipe increases, the liquid pressure at the nozzle far away from the liquid inlet decreases significantly. Since the distance between the nozzle and the film is uniform everywhere, the film near the liquid inlet receives a large spraying pressure, while the film far away from the liquid inlet receives a small spraying pressure, resulting in poor spraying consistency, and further causing wrinkles and other problems in the film.
[0046] To solve the above problems, as shown in Figure 2 Embodiments of the present application provide a spraying device 100, which is mainly used to make the liquid pressure of each nozzle 112 consistent, improve the spraying consistency of the spray pipe 111, and ensure that the water pressure sprayed on the film 300 is smaller. The spraying device 100 comprises a spraying assembly and a liquid inlet assembly.
[0047] As shown in Figures 2 to 4 The spraying assembly comprises a spray pipe 111, and the spray pipe 111 is provided with a plurality of nozzles 112. The plurality of nozzles 112 are arranged at intervals along the extension direction of the spray pipe 111, and the spray pipe 111 is curved and forms at least two bending sections 1111.
[0048] In the present embodiment, the number of the bending segments 1111 is two. In other embodiments, the single bending segment 1111 in the spraying pipe 111 can be bent again to form more bending segments 1111. The connection of each bending segment 1111 is provided with a liquid inlet assembly. By setting the multi-end bending, the spraying range of the spraying pipe 111 is expanded, and the consistency of the spraying can be ensured. Figures 2 to 4
[0049] In the present embodiment, the lengths of the two bending segments 1111 are equal, the spraying pipe 111 is bent into a triangle shape, and the liquid inlet assembly is arranged at the connection between the adjacent two bending segments 1111, so that the two bending segments 1111 are symmetrically arranged. The liquid in the liquid inlet assembly is uniformly distributed into the two bending segments 1111, which is beneficial to improve the consistency of the spraying.
[0050] In other embodiments, the lengths of the bending segments 1111 can not be equal. For example, the spraying pipe 111 is bent into a trapezoidal shape, and two liquid inlet assemblies are arranged on the spraying pipe 111. The number of the liquid inlet assemblies is two, and the liquid inlet assemblies are arranged at the connections between the bottom bending segment 1111 and the side bending segment 1111. The length of the bottom bending segment 1111 is twice the length of the side bending segment 1111. The liquid in the liquid inlet assembly is uniformly distributed into the two bending segments 1111, which is beneficial to improve the consistency of the spraying.
[0051] According to the above content, it should be understood that the number of the liquid inlet assemblies is at least one, and the number of the liquid inlet assemblies can be changed according to actual needs.
[0052] The liquid inlet assembly is arranged at the connection between the adjacent two bending segments 1111. The liquid inlet assembly is in communication with the spraying pipe 111. In the direction away from the liquid inlet assembly, the multiple nozzles 112 distributed at intervals are gradually closer to the liquid inlet assembly. That is, the nozzles 112 closer to the end of the spraying pipe 111 are closer to the film 300. By adjusting the distance between the nozzles 112 and the film 300, the nozzles 112 far from the liquid inlet assembly are arranged closer to the film 300. The spraying pressure on the film 300 close to the liquid inlet is equivalent to the spraying pressure on the film 300 far from the liquid inlet, so that the film 300 is subjected to more uniform force, the consistency of the spraying is improved, and the appearance quality and dimensional stability of the film 300 are improved.
[0053] In addition, since the impact force on each part of the film 300 is uniform, the tension of the film 300 in the conveying direction (the longitudinal direction) is stable, the transverse shrinkage of the film 300 is inhibited, the longitudinal wrinkle stripes formed in the extraction process of the film 300 are reduced, and the appearance quality and dimensional stability of the film 300 are improved. Especially in the case that the film 300 is thin in thickness and large in width, by making the force on the film 300 uniform in the width direction, the wrinkle phenomenon can be obviously improved.
[0054] In some embodiments, the bending segment 1111 is in a straight line shape or an arc shape.
[0055] In the embodiment, the bending section 1111 is linear, the distance between the spray head and the film 300 changes linearly, and the spray heads are arranged at equal intervals. When the bending section 1111 is arc-shaped, the distance between the spray heads should be set according to calculation.
[0056] The spray pipe 111 is made of stainless steel or a corrugated pipe.
[0057] It can be understood that the corrugated pipe has the advantages of good flexibility, strong scalability, and the ability to freely bend within a certain range without damage. The corrugated pipe can be divided into various types according to different factors such as material, shape, size, etc., such as metal corrugated pipe, plastic corrugated pipe, rubber corrugated pipe, etc.
[0058] In some embodiments, the liquid inlet assembly includes a joint (not shown in the figure) and two connecting pipes (not shown in the figure).
[0059] The liquid inlet assembly includes a multi-environment adjustment pipe. The multi-environment adjustment pipe is a tubular connecting piece that can freely adjust the angle in multiple directions. Its main feature is that it can flexibly adjust the position and angle in three-dimensional space while maintaining the stability and reliability of the structure.
[0060] The multi-environment adjustment pipe is composed of multiple scalable and rotatable pipe sections, each section is connected by a joint to achieve multi-directional adjustment.
[0061] In the embodiment, the number of joints is one, and the joint has two moving ends. One connecting pipe is connected to one moving end, and one connecting pipe is also connected to one bending section 1111.
[0062] The joint adopts a connecting structure of ball head and ball socket or a hinged structure. The axes of the two connecting pipes intersect and form an included angle. The moving end drives the connecting pipe to rotate around the joint to change the size of the included angle.
[0063] As shown in Figure 2 and Figure 3 When the width of the film 300 increases, the spraying range of the spray pipe 111 can be increased by increasing the angle of the included angle; correspondingly, when the width of the film 300 decreases, the spraying range of the spray pipe 111 can be decreased by decreasing the angle of the included angle.
[0064] In some embodiments, the liquid inlet assembly further includes a liquid inlet pipe 121 and a first valve 122, and the spray assembly further includes at least two second valves 113.
[0065] As shown in Figures 3 to 5As shown, the liquid inlet pipe 121 is in communication with each connecting pipe, and the first valve 122 is arranged on the liquid inlet pipe 121. A second valve 113 is arranged on a bending section 1111, and the second valve 113 is arranged on the side of the bending section 1111 away from the liquid inlet assembly.
[0066] By arranging the second valve 113, the pressure and flow of a certain bending section 1111 can be adjusted. By jointly controlling the first valve 122 and the second valve 113, the flow and flow rate of the nozzle 112 can be adjusted, and thus the spraying pressure of the liquid on the film 300 can be changed.
[0067] In some embodiments, in the direction away from the liquid inlet assembly, the nozzle 112 gradually approaches the film 300 to be sprayed in the first direction D1 and / or the second direction D2. In the embodiments, the nozzle 112 gradually approaches the film 300 to be sprayed in the first direction D1 and the second direction D2. In other embodiments, the nozzle 112 gradually approaches the film 300 to be sprayed in the first direction D1 or the second direction D2.
[0068] It should be noted that the first direction D1 is a direction perpendicular to the film surface of the film 300 and away from the film 300, the second direction D2 is a longitudinal direction (MD direction, Machine Direction direction) of the film 300, and the third direction D3 is a transverse direction (TD direction, Transverse Direction direction) of the film 300.
[0069] As shown, Figure 2 the bending section 1111 extends forward and downward. By extending forward, the distance between the nozzle 112 and the film 300 is changed. By extending downward, the liquid outlet of the nozzle 112 is smoother. The actual spraying position of the nozzle 112 and the distance between the nozzle 112 and the roller shaft are also adjusted, and the film 300 is prevented from slipping.
[0070] In some embodiments, the nozzle 112 is movably connected to the spraying pipe 111, so as to adjust the spraying angle of the nozzle 112.
[0071] As shown, Figure 2 the spraying direction of the nozzle 112 close to the edge of the film 300 is inclined to the middle part of the film 300, so that each nozzle 112 can spray the film 300, and the extraction efficiency is improved.
[0072] In some embodiments, the nozzle 112 is a spiral switch spraying nozzle, and the opening size of the spraying nozzle can be controlled by rotating, so as to adjust the flow and flow rate of the nozzle 112.
[0073] The embodiments of the present application also provide an extraction system 1000, which comprises at least one spraying device 100 and a conveying device 200 according to any one of the above embodiments.
[0074] As shown in Figure 2 , the conveying device 200 is used for conveying the film 300, the film 300 has oppositely arranged inner and outer sides, the spraying device 100 faces the inner or outer side of the film 300, and single or double side spraying of the film 300 is realized.
[0075] In some embodiments, the conveying device 200 includes a first roller group 210 and a second roller group 220.
[0076] As shown in Figure 2 , the first roller group 210 includes a plurality of first roller shafts 211 arranged in parallel; the second roller group 220 is arranged in the second direction D2 and spaced apart from the first roller group 210, the second roller group 220 includes a plurality of second roller shafts 221 arranged in parallel, the axial directions of the first roller shafts 211 and the second roller shafts 221 are parallel to the third direction D3, and in the first direction D1, the first roller shafts 211 and the second roller shafts 221 are arranged alternately.
[0077] The film 300 is sequentially pulled through the alternately arranged first roller shafts 211 and second roller shafts 221 by external force, and there is sliding friction between the film 300 and the surface of the first roller shafts 211 or the second roller shafts 221, and the rotation of the roller shafts drives the film 300 to advance.
[0078] In the extraction process, as shown in Figure 1 , the spraying line of the spraying pipe in the related art is close to the tangent position of the film and the roller, so that the spraying liquid is easily wrapped into the interlayer of the roller and the film, the friction between the film and the roller is reduced, and slipping is caused.
[0079] In view of the above problems, as shown in Figure 2 , the nozzle 112 of the spraying pipe 111 faces the film 300 and forms a spraying line 130 on the film 300, the spraying line 130 extends along the third direction D3, and in the second direction D2, the spraying line 130 is located between the first roller shaft 211 and the second roller shaft 221. In this way, the spraying line 130 is separated from the tangent of the first roller shaft 211 and the film 300 and the tangent of the second roller shaft 221 and the film 300 at the same time, the spraying liquid is less wrapped into the interlayer of the roller and the film 300, the friction between the film 300 and the roller is increased, and the slipping frequency is reduced.
[0080] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.
[0081] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.
Claims
1. A spray device, characterized in that The application relates to a spraying device. The spraying device comprises a spraying assembly and a liquid inlet assembly. The spraying assembly comprises a spraying pipe provided with a plurality of nozzles, the nozzles being arranged at intervals along the extension direction of the spraying pipe, and the spraying pipe is bent and forms at least two bending sections.
2. The spray device of claim 1, wherein The liquid inlet assembly is arranged at the joint of two adjacent bending sections and communicates with the spraying pipe.
3. The spray device of claim 1, wherein The nozzles gradually approach the film to be sprayed in the direction away from the liquid inlet assembly. The bending sections are linear or arc-shaped. The liquid inlet assembly comprises a joint member, two connecting pipes and a liquid inlet pipe. The joint member has two moving ends.
4. The spray device of claim 3, wherein One connecting pipe corresponds to one moving end, and one connecting pipe communicates with one bending section. The axes of the two connecting pipes intersect and form an included angle. The moving ends drive the connecting pipes to rotate around the joint member to change the size of the included angle.
5. The shower assembly of claim 4, wherein, The liquid inlet assembly comprises a liquid inlet pipe and a first valve. The spraying assembly further comprises at least two second valves.
6. The shower assembly of any one of claims 1 to 5, wherein, One second valve corresponds to one bending section, and the second valve is arranged on the side of the bending section away from the liquid inlet assembly.
7. The shower assembly of any one of claims 1 to 5, wherein, In the direction away from the liquid inlet assembly, the nozzles gradually approach the film to be sprayed in the first direction and / or the second direction, the first direction is perpendicular to the film surface of the film to be sprayed and away from the film to be sprayed, and the first direction and the second direction are perpendicular.
8. An extraction system characterized by, The nozzles are movably connected with the spraying pipe to adjust the spray angle of the nozzles. The application relates to a spraying device. The spraying device comprises at least one spraying device as claimed in any one of claims 1 to 7.
9. The extraction system of claim 8, wherein, The conveying device is used for conveying a film having an inner side and an outer side arranged oppositely, and the spraying device faces the inner side or the outer side of the film. The conveying device comprises a first roller group and a second roller group. The first roller group comprises a plurality of first roller shafts arranged in parallel.
10. The extraction system of claim 9, wherein, The second roller group and the first roller group are arranged at intervals in the second direction. The second roller group comprises a plurality of second roller shafts arranged in parallel. The axial directions of the first roller shafts and the second roller shafts are parallel to the third direction. In the first direction, the first roller shafts and the second roller shafts are arranged alternately. The nozzles of the spraying pipe face the film and form a spraying line on the film, and the spraying line extends along the third direction. In the second direction, the spraying line is located between the first roller shafts and the second roller shafts.