Diaphragm spraying device
By using movable shielding members and crossbars in the diaphragm spraying device to adjust the size of the discharge channel, the problem of uneven slurry during the diaphragm spraying process is solved, and the uniformity of the diaphragm thickness and simplification of operation are achieved.
Patent Information
- Application Number
- CN202420053175.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-09
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-01-09
AI Technical Summary
The existing diaphragm spraying devices are prone to uneven slurry during the spraying process, resulting in uneven diaphragm thickness and cumbersome adjustment process, which cannot be completely and effectively improved.
A diaphragm spraying device is designed, including a housing, a spray head and a discharge adjustment module. By providing a movable shield and a crossbar in the discharge channel, it can move in the first direction to change the size of the discharge channel, thereby Adjust the spray range to achieve uniformity of slurry thickness.
By adjusting the size of the discharge channel, it is possible to ensure that each area is covered by the same number of spray heads, solving the problem of uneven slurry thickness, simplifying the adjustment process, and improving the uniformity of spraying.
Smart Images
Figure CN222219955U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of diaphragm production, and in particular to a diaphragm spraying device. Background Art
[0002] As an indispensable material in lithium batteries, although the diaphragm does not participate in the electrochemical reaction in the battery, key performance such as battery capacity, cycle performance and charge and discharge current density are directly related to the diaphragm. The improvement of diaphragm performance plays an important role in improving the comprehensive performance of lithium batteries. Therefore, a coating is usually applied on the surface of the diaphragm to improve the diaphragm performance.
[0003] Spraying is a commonly used coating method. The current spraying device has a baffle and multiple nozzles. The baffle is provided with multiple discharge ports. The slurry is sprayed toward the baffle through the nozzles. The slurry passes through the discharge ports and covers the surface of the diaphragm.
[0004] like Figure 1 As shown, Figure 1 This is the case when there is no abnormality in the spraying process, where the left and right directions are the width directions of the diaphragm, and the movement direction of the diaphragm is perpendicular to the paper surface. When there is no abnormality in the spraying, each area of the diaphragm in the width direction is covered by the spraying range of the two nozzles. However, during the spraying process, Figure 2 and Figure 3 The abnormal situation shown in Figure 2 In the A area, there is a problem of small diaphragm spraying volume, and the A area is covered by the spraying range of only one nozzle; Figure 3 In the B area, there is a problem of large diaphragm spraying amount, and the B area is covered by the spraying range of three nozzles. The slurry sprayed on the diaphragm is uneven, which will cause uneven thickness of the diaphragm after coating.
[0005] When the existing spraying device becomes unevenly covered with slurry on the surface of the diaphragm, the entire spraying device needs to be positioned to change the distance between the nozzle and the diaphragm. At the same time, the parallelism of the nozzle and the membrane surface needs to be adjusted back and forth to ensure that the spraying increment of the slurry sprayed on the diaphragm is extremely poor within a certain area. The operation is relatively cumbersome and has not yet been completely and effectively improved. Utility Model Content
[0006] The purpose of the present application is to provide a diaphragm spraying device, so as to facilitate adjustment when the thickness of the slurry on the diaphragm is uneven.
[0007] The embodiment of the present application is implemented as follows:
[0008] In a first aspect, an embodiment of the present application provides a membrane spraying device, comprising a housing, a nozzle disposed inside the housing, and a discharge regulating module disposed inside the housing. One side of the housing is a baffle, and the baffle is provided with at least two discharge ports spaced apart along a first direction, and a discharge channel is formed inside the discharge port for slurry to pass through.
[0009] The nozzle is used to spray slurry toward the baffle, so that the slurry passes through the discharge channel and covers the diaphragm. The discharge adjustment module includes a shielding member arranged corresponding to the discharge channel, and the shielding member can move along the first direction to change the size of the discharge channel in the first direction.
[0010] In the above technical solution, the slurry is sprayed toward the baffle through the nozzle inside the shell, and the slurry can be sprayed onto the diaphragm through the discharge port of the baffle. By adjusting the size of the discharge channel inside the discharge port, the spraying range of the slurry sprayed onto the diaphragm in the first direction can be changed, thereby increasing or decreasing the amount of slurry sprayed on a certain area of the diaphragm, so that each area of the diaphragm is covered by the spraying range of the same number of nozzles, and the amount of slurry sprayed on each area of the diaphragm is the same, so that the thickness of the slurry on the diaphragm is more uniform.
[0011] In combination with the first aspect, in some optional embodiments, the discharge adjustment device module also includes a cross bar extending along the first direction, the shielding member is connected to the cross bar, and the cross bar is also slidably connected to the baffle plate, and the cross bar can slide relative to the baffle plate along the first direction to drive the shielding member to move.
[0012] In the above technical solution, by sliding the cross bar relative to the baffle in the first direction, the sizes of all the discharge channels in the first direction can be changed at the same time, thereby changing the spraying range of the slurry sprayed onto the diaphragm by the nozzle in the first direction. In the case where the sizes of all the discharge channels need to be adjusted in the same way, the above technical solution has the characteristic of being easier to adjust.
[0013] In combination with the first aspect, in some optional embodiments, the shielding member is slidably connected to the cross bar, each of the shielding members can move along the first direction relative to the cross bar, and one shielding member is arranged in the area between two adjacent discharge ports.
[0014] In the above technical solution, the shielding member is slidably connected to the cross bar, and the shielding member is arranged between two adjacent discharge ports. The shielding member can change the size of the discharge channel inside any discharge port by sliding the shielding member, so as to change the spraying range of the slurry sprayed onto the diaphragm by the nozzle in the first direction.
[0015] In combination with the first aspect, in some optional embodiments, the discharge adjustment module also includes a locking assembly, the cross bar is provided with a slide groove corresponding one-to-one to the shielding member and extending along the first direction, the shielding member is slidably arranged in the slide groove, and the shielding member is selectively fixed at any position of the slide groove by the locking assembly.
[0016] In the above technical solution, the shielding member is fixed at any position of the slide slot by means of a locking assembly, and the position of the shielding member on the cross bar can be fixed after the size of the discharge channel is adjusted by means of the shielding member.
[0017] In combination with the first aspect, in some optional embodiments, the shielding member is provided with a through hole, the locking assembly includes a fixing member and a locking member, the first end of the fixing member passes through the through hole and the slide groove, and the locking member cooperates with the first end of the fixing member to lock the shielding member.
[0018] In combination with the first aspect, in some optional embodiments, the shielding member has a vertical edge, and during the movement of the shielding member along the first direction, the side of the shielding member where the vertical edge is located can selectively cover part of the discharge port to change the size of the discharge channel in the first direction.
[0019] In combination with the first aspect, in some optional embodiments, in the first direction, each of the shielding members is provided with a first limit block and a second limit block on both sides, respectively, the first limit block and the second limit block are fixed to the baffle, and the distance between the first limit block and the second limit block is the maximum displacement of the shielding member.
[0020] In the above technical solution, the movable position of the shielding member can be limited by the first limit block and the second limit block, so as to avoid production abnormalities caused by excessive displacement of the shielding member during manual adjustment.
[0021] In combination with the first aspect, in some optional embodiments, rollers distributed along the first direction are provided on the baffle, and the cross bar is supported by the rollers.
[0022] In combination with the first aspect, in some optional embodiments, a linear drive assembly is provided at one end of the shell, and the linear drive assembly is used to drive the cross bar to slide in the first direction relative to the baffle.
[0023] In combination with the first aspect, in some optional embodiments, the linear drive assembly includes a screw and a nut threadedly connected to the screw; the axis of the screw is arranged along the first direction, the screw is rotatably arranged relative to the housing, and the nut is fixedly connected to the cross bar. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0025] Figure 1 This is a diagram showing the uniform thickness of the slurry on the diaphragm;
[0026] Figure 2 This is a diagram showing that the slurry thickness in a local area on the diaphragm is too thin;
[0027] Figure 3 This is a diagram showing that the slurry thickness in a local area on the diaphragm is too thick;
[0028] Figure 4 A schematic diagram of the three-dimensional structure of a diaphragm spraying device provided in an embodiment of the present application;
[0029] Figure 5 A side view of the interior of a membrane spraying device provided in an embodiment of the present application;
[0030] Figure 6 A side view of the exterior of a membrane spraying device provided in an embodiment of the present application;
[0031] Figure 7 A schematic diagram of the principle of improving uneven slurry thickness on a diaphragm by a diaphragm spraying device provided in one embodiment of the present application;
[0032] Figure 8 A schematic diagram of the principle of improving the uneven thickness of slurry on the diaphragm by a diaphragm spraying device provided in another embodiment of the present application.
[0033] Icons: 100-shell; 110-baffle; 111-discharge port; 200-nozzle; 300-diaphragm; 410-shielding member; 411-vertical edge; 420-cross bar; 421-slide; 430-locking assembly; 431-fixing member; 432-locking member; 441-first limit block; 442-second limit block; 500-first direction; 600-roller; 700-linear drive assembly; 710-screw; 720-nut; 800-slurry; 900-adjusting screw. DETAILED DESCRIPTION
[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0035] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0037] In the description of this application, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0038] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0039] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0040] The present application provides a membrane spraying device, which can adjust the spraying range of the slurry sprayed by the nozzle 200 onto the membrane 300, thereby changing each area on the membrane 300 to be covered by the spraying range of the same number of nozzles 200, so as to adjust the thickness of the slurry 800 on the membrane 300, so as to make the thickness of the slurry on the membrane more uniform. In the present application, the normal spraying situation is as follows Figure 1 As shown, each area of the diaphragm 300 will be covered by the spraying range of the two spray heads 200 . Figure 1 In the figure, the left-right direction is the width direction of the diaphragm 300, and the movement direction of the diaphragm 300 is the direction perpendicular to the paper surface.
[0041] The diaphragm spraying device provided in this application is as follows Figures 4 to 8 As shown, it includes a shell 100, a nozzle 200 arranged inside the shell 100, and a discharge adjustment module arranged in the shell 100. One side of the shell 100 is a baffle 110, and the baffle 110 is provided with at least two discharge ports 111 spaced apart along a first direction 500, and a discharge channel for the slurry 800 to pass through is formed inside the discharge port 111. The nozzle 200 is used to spray the slurry 800 toward the baffle 110, so that the slurry 800 passes through the discharge channel and covers the diaphragm 300. The discharge adjustment module includes a movable shielding member 410, and the shielding member 410 can move along the first direction 500. Among them, the first direction 500 is the horizontal direction of the diaphragm spraying device provided in the present application when in use, that is, Figure 4 Direction indicated by the arrow.
[0042] It should not be difficult for a person skilled in the art to understand that when the spraying device provided in the present application is used to spray the slurry 800 on the surface of the diaphragm 300, the diaphragm 300 is arranged outside the housing 100, and the movement direction of the diaphragm 300 is perpendicular to the first direction 500, that is, the first direction 500 is the width direction of the diaphragm 300. On this basis, since the shielding member 410 changes the size of the discharge channel in the first direction 500, the spraying range of the slurry sprayed on the diaphragm 300 by the nozzle 200 in the first direction 500 can be changed by changing the size of the discharge channel in the first direction 500. Since the discharge port 111 is arranged along the first direction 500, after the size of the spraying range in the first direction 500 changes, the number of diaphragms 300 covered by the spraying range of the nozzle 200 in a certain area can be changed, so that each area of the diaphragm 300 is covered by the spraying range of the same number of nozzles 200, thereby improving the problem of uneven thickness of the slurry 800 on the diaphragm 300. The principle of using the membrane spraying device provided in the present application to improve the uneven thickness of the slurry 800 on the membrane 300 is as follows: Figure 7 shown.
[0043] For example, in solving Figure 2The problem of the small thickness of the slurry 800 in the A area on the diaphragm 300 shown in the figure can be solved by increasing the size of the discharge channel in the first direction 500 so that the A area is also covered by the spraying range of the two nozzles 200; Figure 3 The problem of the thick slurry 800 in the B area on the diaphragm 300 shown can be solved by reducing the size of the discharge channel in the first direction 500 so that the B area is also covered by the spraying range of the two nozzles 200.
[0044] In the present application, the discharge channel should be understood as an effective area in the discharge port 111 through which the slurry 800 can pass. When there is no overlapping area between the outer contour of the shielding member 410 and the outer contour of the discharge port 111, the ejected slurry 800 can pass through any position in the discharge port 111, in which case the discharge channel is the entire area surrounded by the outer contour of the discharge port 111; when there is an overlapping area between the outer contour of the shielding member 410 and the outer contour of the discharge port 111, the ejected slurry 800 can only pass through the area of the discharge port 111 that is not blocked by the shielding member 410, in which case the discharge channel is the partial area surrounded by the outer contour of the discharge port 111.
[0045] In the present application, there is no limitation on the form of the housing 100 and the nozzle 200. In some embodiments, Figures 4 to 6 As shown, the housing 100 is a square housing 100, and the nozzle 200 is arranged inside the square space surrounded by the housing 100. The nozzle 200 is a disc-shaped structure, and a plurality of discharge ports 111 are arranged along the circumference of the nozzle 200. The nozzle 200 sprays the slurry 800 during the rotation process, and the slurry 800 after passing through the discharge channel adheres to the diaphragm 300. In some other embodiments, housings 100 of other shapes or other nozzles 200 may also be used.
[0046] Furthermore, in the membrane spraying device provided in the present application, the discharge adjustment module further includes a slidable cross bar 420, the shielding member 410 is connected to the cross bar 420, and the cross bar 420 can slide relative to the baffle 110 along the first direction 500, thereby driving the shielding member 410 to slide along the first direction 500 to change the size of the discharge channel and solve the problem of uneven thickness of the slurry 800 on the surface of the membrane 300. In the present application, there is no limitation on the shape of the cross bar 420. In one embodiment, the cross bar 420 is a long strip structure.
[0047] In the present application, there is no limitation on the arrangement of the crossbar 420, as long as it can move relative to the baffle 110 along the first direction 500. In one embodiment, the crossbar 420 extends along the first direction 500, that is, the crossbar 420 is long and parallel to the first direction 500. Figure 4 and Figure 6 As shown, one end of the cross bar 420 is slidably supported on the baffle 110, and the other end is slidably supported on the side plate in the housing 100, wherein the side plate is a plate-shaped structural member in the housing 100 that is directly connected to the baffle 110. In other embodiments, the cross bar 420 may also be in a shape other than a strip, and both ends of the cross bar 420 may be slidably supported on the baffle 110 or both ends may be slidably supported on the side plate in the housing 100.
[0048] In the present application, there is no limitation on the method for realizing that the cross bar 420 can slide relative to the baffle 110 along the first direction 500. In some embodiments, such as Figure 4 As shown, a plurality of rollers 600 may be arranged on the baffle 110 along the first direction 500 to support the crossbar 420, so that the crossbar 420 can move along the first direction 500. Further, a linear drive assembly 700 is arranged at one end of the housing 100, and the linear drive assembly 700 drives the crossbar 420 to move along the first direction 500. In the present application, there is no limitation on the specific structure of the linear drive assembly 700. In some embodiments, a screw nut mechanism may be used as the linear drive assembly 700. Specifically, as Figure 6 As shown, the linear drive assembly 700 includes a screw rod 710 and a nut 720 threadedly connected to the screw rod 710. The axis of the screw rod 710 is set along the first direction 500. The screw rod 710 is rotatably set relative to the housing 100. The nut 720 is fixedly connected to the cross bar 420. By rotating the screw rod 710, the nut 720 can be moved on the screw rod 710 along the first direction 500, thereby driving the cross bar 420 to move along the first direction 500.
[0049] In the present application, there is no limitation on the connection relationship between the cross bar 420 and the shielding member 410 , as long as the cross bar 420 can drive the shielding member 410 to move together when it moves.
[0050] In some embodiments, the cross bar 420 and the shielding member 410 are only fixedly connected. By moving the cross bar 420 along the first direction 500, all the shielding members 410 can be driven to move at the same time. When the sizes of all discharge channels need to be adjusted in the same way, the fixed connection between the cross bar 420 and the shielding member 410 has a higher adjustment efficiency.
[0051] In other embodiments, the cross bar 420 is slidably connected to the shielding member 410. Since the cross bar 420 is slidably connected to the shielding member 410, when the cross bar 420 is fixed, the size of the discharge channel in the discharge port 111 can be adjusted by the movement of the shielding member 410 relative to the cross bar 420, that is, through the slidable connection between the shielding member 410 and the cross bar 420, more precise adjustment can be achieved, which can be applied to the occasion where there are differences in the uneven thickness of the slurry 800 at different positions on the diaphragm 300.
[0052] Further, in the embodiment where the cross bar 420 and the shielding member 410 are connected by sliding, the discharging adjustment module further includes a locking assembly 430 for locking the shielding member 410 on the cross bar 420, so as to fix the shielding member 410 after adjusting the position of the shielding member 410. Specifically, in one embodiment, the cross bar 420 is provided with a slide groove 421 corresponding to the shielding member 410 and extending along the first direction 500, the shielding member 410 is slidably disposed in the slide groove 421, and the shielding member 410 can be selectively fixed at any position in the slide groove 421 through the locking assembly 430.
[0053] The present application does not limit the specific structure of the locking assembly 430, as long as it can achieve the fixing of the shielding member 410 to the slide groove 421 of the cross bar 420. In one embodiment, the locking assembly 430 includes a fixing member 431 and a locking member 432, and a through hole is provided at one end of the shielding member 410 for connecting the cross bar 420. The first section of the fixing member 431 passes through the through hole and the slide groove 421 and cooperates with the locking member 432 to fix the shielding member 410 to the cross bar 420. In one embodiment, the fixing member 431 can be a bolt, and the locking member 432 is a nut 720. The fixing member 431 and the locking member 432 are threadedly connected to fix the cross bar 420 to the shielding member 410.
[0054] In a preferred embodiment of the present application, the shielding member 410 has a vertical edge 411, wherein the vertical edge 411 is in a vertical state during the operation of the membrane spraying device provided in the present application. During the movement of the shielding member 410 along the first direction 500, the side of the shielding member 410 where the vertical edge 411 is located can selectively cover part of the discharge port 111, that is, during the movement of the shielding member 410 along the first direction 500, the size of the discharge channel in the first direction 500 changes, and one side of the discharge channel is formed by the vertical edge 411 of the shielding member 410. Due to the existence of the vertical edge 411, the coverage area formed by the slurry 800 passing through the discharge channel on the surface of the diaphragm 300 has an edge extending in the vertical direction, and one side edge of the coverage area extends in the vertical direction, which can facilitate the splicing between two adjacent coverage areas, thereby avoiding the uneven thickness of the slurry 800 at the splicing position of the two coverage areas of the diaphragm 300.
[0055] In a preferred embodiment of the present application, Figure 4 As shown, in the first direction 500, a first limit block 441 and a second limit block 442 are respectively provided on both sides of each shielding member 410 to limit the movement distance of the shielding member 410 along the first direction 500. It is not difficult to understand that the distance between the first limit block 441 and the second limit block 442 is the maximum displacement of the shielding member 410.
[0056] Specifically, the effect of setting the first stop block 441 and the second stop block 442 is that when the shielding member 410 moves along the first direction 500 to contact the first stop block 441, the shielding member 410 is located outside the contour of the discharge port 111; when the shielding member 410 moves in the opposite direction along the first direction 500 to contact the second stop block 442, the side of the shielding member 410 where the vertical edge 411 is located can selectively cover part of the discharge port 111. That is, when the shielding member 410 contacts the first stop block 441, the discharge channel is the entire area surrounded by the outer contour of the discharge port 111. During the movement of the shielding member 410 from the position in contact with the first stop block 441 to the second stop block 442, the size component of the discharge channel is reduced, so that the size of the slurry 800 sprayed onto the diaphragm 300 by the corresponding nozzle 200 in the first direction 500 is reduced.
[0057] Furthermore, when the shielding member 410 contacts the second limit block 442, the edge of the shielding member 410 close to the first limit block 441 is still located on the outside of the discharge port 111, so as to avoid the inside of the discharge port 111 being divided into two discharge channels in the first direction 500 by the shielding member 410 when the shielding member 410 contacts the second limit block 442, thereby avoiding the slurry 800 from spraying out from the discharge channel close to the first limit block 441, resulting in the presence of local slurry 800 thickness on the diaphragm 300.
[0058] If the slurry 800 in a local area on the diaphragm 300 is still too thin when the shielding member 410 moves to contact the first limit block 441, a person skilled in the art can solve the problem by moving the diaphragm spraying device provided by the present application as a whole toward the diaphragm 300, such as Figure 4 and Figure 6 As shown, the adjusting screw 900 is turned to roughly adjust the diaphragm spraying device as a whole to a rough position in a direction away from the diaphragm 300, and then the position of the shielding member 410 is adjusted to further increase the amount of slurry sprayed on a certain area of the diaphragm 300.
[0059] In the present application, the first limit block 441 and the second limit block 442 are fixed to the baffle 110. In an optional embodiment, a shielding member 410 can be provided on both sides of each discharge port 111 in the first direction 500, so that the size of the discharge channel can be adjusted from both sides of the discharge port 111, which is more flexible. The specific adjustment structure and principle are the same or similar to those described above. The principle of using the membrane spraying device provided in this embodiment to improve the uneven thickness of the slurry 800 on the membrane 300 is as follows: Figure 8 As shown, the dotted line in the figure represents the slurry 800 that is blocked by the shielding member 410 and cannot be sprayed onto the surface of the diaphragm 300 .
[0060] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A diaphragm spraying device, characterized in that: include: A shell, one side of the shell is a baffle, the baffle is provided with at least two discharge ports spaced apart along a first direction, and a discharge channel for the slurry to pass through is formed inside the discharge port; A nozzle disposed inside the shell, the nozzle being used to spray slurry toward the baffle, so that the slurry passes through the discharge channel and covers the diaphragm; A discharge regulating module is arranged on the shell, and the discharge regulating module includes a shielding member arranged corresponding to the discharge channel, and the shielding member can move along the first direction to change the size of the discharge channel in the first direction.
2. The diaphragm spraying device according to claim 1, characterized in that: The discharging adjustment module also includes a cross bar extending along the first direction, the shielding member is connected to the cross bar, and the cross bar is also slidably connected to the baffle plate. The cross bar can slide relative to the baffle plate along the first direction to drive the shielding member to move.
3. The diaphragm spraying device according to claim 2, characterized in that: The shielding members are slidably connected to the cross bar, and each of the shielding members can move relative to the cross bar along the first direction. One shielding member is arranged in the area between two adjacent discharge ports.
4. The diaphragm spraying device according to claim 3, characterized in that: The discharging adjustment module also includes a locking assembly, the cross bar is provided with a slide groove corresponding to the shielding member one by one and extending along the first direction, the shielding member is slidably arranged in the slide groove, and the shielding member is selectively fixed at any position of the slide groove by the locking assembly.
5. The diaphragm spraying device according to claim 4, characterized in that: The shielding member is provided with a through hole, the locking assembly includes a fixing member and a locking member, the first end of the fixing member passes through the through hole and the slide groove, and the locking member cooperates with the first end of the fixing member to lock the shielding member.
6. The diaphragm spraying device according to claim 1, characterized in that: The shielding member has a vertical edge. When the shielding member moves along the first direction, the side of the shielding member where the vertical edge is located can selectively cover part of the discharge port to change the size of the discharge channel in the first direction.
7. The diaphragm spraying device according to claim 6, characterized in that: In the first direction, a first limit block and a second limit block are respectively provided on both sides of each shielding member, the first limit block and the second limit block are fixed to the baffle, and the distance between the first limit block and the second limit block is the maximum displacement of the shielding member.
8. The diaphragm spraying device according to claim 2, characterized in that: The baffle is provided with rollers distributed along the first direction, and the cross bar is supported by the rollers.
9. The diaphragm spraying device according to claim 2, characterized in that: A linear drive assembly is disposed at one end of the housing, and the linear drive assembly is used to drive the cross bar to slide relative to the baffle in the first direction.
10. The diaphragm spraying device according to claim 9, characterized in that: The linear drive assembly includes a screw and a nut threadedly connected to the screw; the axis of the screw is arranged along the first direction, the screw is rotatably arranged relative to the housing, and the nut is fixedly connected to the cross bar.