A plug type coating valve

Abstract

The utility model relates to the technical field of coating valves, and discloses a plug-type coating valve, including a housing, on which an inlet and an outlet are provided; a valve core sleeve, arranged in the housing, on which a plurality of first communicating holes are provided, and the plurality of first communicating holes are respectively arranged corresponding to the inlet and the outlet, and a stopper for limiting the rotation of the valve core sleeve is arranged between the valve core sleeve and the housing; and a valve core, rotatably arranged in the valve core sleeve, the valve core includes a connecting section and an extension section, wherein a plurality of second communicating holes are provided in the connecting section, and when the plug-type coating valve is opened, the second communicating holes are arranged corresponding to the first communicating holes for fluid circulation, and the diameter of the extension section gradually decreases in the direction away from the connecting section. The utility model is conducive to reducing the intensity of fluid impact generated by slurry through the arrangement of the valve core and the valve core sleeve, thereby achieving the technical effect of improving the uniformity and stability of electrode coating.

Description

Technical Field

[0001] The utility model belongs to the technical field of coating valves, and in particular relates to a plug-type coating valve. Background Art

[0002] Pole sheet coating refers to the process of uniformly coating the slurry on the surface of the current collector and drying the organic solvent in the slurry. It can play a major role in improving battery performance, ensuring electrode uniformity and controlling electrode thickness. Therefore, the coating effect and accuracy of the pole sheet directly affect the performance and quality of the battery. The existing pole sheet coating process usually requires the use of a coating valve to control the flow of the coating slurry to ensure that the slurry can be evenly and stably retained on the current collector to be coated.

[0003] In the related art, the flow control type coating valve includes a valve body, which is provided with an outlet for the slurry to flow out, and the valve body is connected to an inlet pipe at the outlet, and the coating slurry flows into the valve body through the inlet pipe. The valve body is provided with a valve core at the outlet for blocking or opening the outlet, and the valve core is slidably arranged at the outlet. When the valve core blocks the outlet, the coating valve is in a closed state, and when the valve core is away from the outlet, the coating valve is in an open state.

[0004] However, at the moment of opening and closing the coating valve, the slurry produces fluid impact, which affects the coating effect of the coating valve to a certain extent, and the uniformity and stability of the electrode coating are poor. Utility Model Content

[0005] In order to address the deficiencies of the prior art, the utility model provides a plug-type coating valve, in which the valve core is rotated to adjust the connectivity between the valve core and the valve core sleeve to open or close the plug-type coating valve. At the same time, the pressure of the fluid when flowing in the extension section can achieve an effect of nearly linear pressure increase to a constant pressure. The arrangement of the valve core and the valve core sleeve is conducive to reducing the intensity of the fluid impact generated by the slurry, thereby improving the uniformity and stability of the electrode coating.

[0006] The technical effects to be achieved by the utility model are achieved through the following technical aspects:

[0007] The utility model provides a plug-type coating valve, comprising

[0008] A shell, wherein an inlet and an outlet are formed on the shell;

[0009] A valve core sleeve is arranged in the housing, a plurality of first communication holes are opened on the valve core sleeve, the plurality of first communication holes are respectively arranged corresponding to the inlet and the outlet, and a stopper for limiting the rotation of the valve core sleeve is arranged between the valve core sleeve and the housing; and

[0010] The valve core is rotatably arranged in the valve core sleeve, and the valve core includes a connecting section and an extending section, wherein a plurality of second connecting holes are provided on the connecting section, and when the plug-type coating valve is opened, the second connecting holes are arranged corresponding to the first connecting holes for fluid circulation, and the pipe diameter of the extending section gradually decreases in the direction away from the connecting section.

[0011] In some implementations, the extension section is a multi-stage sleeve structure with a diameter that decreases in a step-by-step manner.

[0012] In some implementations, a sealing adjustment assembly is disposed between the valve core sleeve and the housing.

[0013] In some implementations, the sealing adjustment assembly includes a sealing sleeve, which is sleeved on the valve core and located on one side of the valve core sleeve; and a clamping nut, which is sleeved on the valve core and threadedly connected to the inner wall of the shell, and the clamping nut squeezes the sealing sleeve to the corresponding side of the valve core sleeve.

[0014] In some implementations, the transition section is provided between the connecting section and the extending section, and the transition section is a conical tubular structure.

[0015] In some implementations, the sealing sleeve is a conical sealing sleeve and is adapted to the transition section.

[0016] In some implementations, a bearing is disposed inside the housing, and the valve core is inserted into the bearing.

[0017] In some implementations, a first sealing end cover is provided on the shell, a sealing through hole is opened on the first sealing end cover, the extension section is passed through the sealing through hole, and a sealing ring is provided between the outer wall of the extension section and the hole wall of the sealing through hole.

[0018] In some implementations, the first sealing end cap is detachably connected to the housing.

[0019] In some implementations, the stop member includes a stop sleeve, the stop sleeve includes a stop end, a stop groove is formed on the stop end, and a groove wall of the stop groove abuts against an outer wall of the valve core sleeve.

[0020] In summary, the utility model has at least the following benefits:

[0021] The utility model provides a plug-type coating valve, wherein a plurality of first communicating holes are respectively arranged corresponding to an inlet and an outlet, a shell body and a valve core sleeve are connected, and when in a closed state, the second communicating holes are roughly offset from the first communicating holes to block the fluid from flowing into the valve core through the inlet and the first communicating holes in sequence.

[0022] In the open state, the valve core rotates to the state where the second connecting hole is set corresponding to the first connecting hole, the valve core is connected to the valve core sleeve, and the fluid can enter the housing from the inlet, and then flow into the valve core through the first connecting hole and the second connecting hole on the corresponding side in sequence, and then the fluid flows out of the valve core sleeve through the second connecting hole and the first connecting hole on the corresponding side in sequence, and finally flows out of the housing from the outlet for electrode coating. When the fluid flows into the valve core, the extension section changes the pipe diameter so that the pressure of the fluid obtains an effect close to linear pressure increase to a constant pressure. The cooperation between the valve core and the valve core sleeve can reduce the influence of fluid impact on the control accuracy, improve the uniformity and stability of the electrode coating, and thus improve the effect of the electrode coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The exploded view of a plug-type coating valve according to a specific embodiment of the utility model.

[0024] Figure 2 It is a cross-sectional view of a plug-type coating valve in an open state according to a specific embodiment of the utility model.

[0025] Figure 3 A cross-sectional view of a plug-type coating valve in a closed state according to a specific embodiment of the utility model

[0026] Markings in the figure:

[0027] 1. Shell; 11. Inflow section; 111. Inflow port; 12. Outflow section; 121. Outflow port;

[0028] 2. valve core sleeve; 21. first communication hole; 22. stop sleeve; 221. stop groove;

[0029] 3. valve core; 31. connecting section; 311. second connecting hole; 32. extending section; 33. transition section;

[0030] 4. Sealing adjustment assembly; 41. Sealing sleeve; 42. Compression nut;

[0031] 5. Bearings;

[0032] 6. First sealing end cover; 61. Sealing perforation; 62. Sealing ring;

[0033] 7. Second sealing end cover. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. The described implementation is a part of the implementation of the utility model, not all of the implementations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0036] Embodiment 1:

[0037] Please see attached Figure 1-3 The plug-type coating valve of the utility model can be used in the field of high-precision fluid control, such as the coating of slurry in electrode coating.

[0038] The plug-type coating valve of the utility model comprises a housing 1, wherein the housing 1 comprises an inflow section 11 and an outflow section 12, and the inflow section 11 and the outflow section 12 are arranged correspondingly so as to form a channel for the slurry to flow in the housing 1. An inflow inlet 111 is provided on the inflow section 11, and an outflow outlet 121 is provided on the outflow section 12, and the slurry flows into the housing 1 through the inflow inlet 111 and flows out through the outflow outlet 121.

[0039] A valve core sleeve 2 is arranged in the housing 1. The valve core sleeve 2 is specifically in the shape of a circular tube and is arranged coaxially with the housing 1. A plurality of first communication holes 21 are provided on the valve core sleeve 2. In some specific embodiments shown, two first communication holes 21 are provided. The two first communication holes 21 are symmetrically distributed along the axis of the valve core sleeve 2. Moreover, the two first communication holes 21 are respectively arranged corresponding to the inlet 111 and the outlet 121, so that the slurry can flow into the valve core 3 through the inlet 111 and the first communication holes 21 in sequence, and then flow out of the housing 1 through the first communication holes 21 and the outlet 121 in sequence. It can be understood that this is not a specific limitation on the number of the first communication holes 21, and technicians in the relevant field can make replacements on this basis. For example, in some specific embodiments, four first communication holes 21 are provided, two first communication holes 21 are arranged corresponding to the inlet 111, and the other two first communication holes 21 are arranged corresponding to the outlet 121.

[0040] A stopper is arranged in the housing 1 to limit the rotation of the valve core sleeve 2 .

[0041] A valve core 3 is rotatably arranged in the valve core sleeve 2, and the valve core 3 includes a connecting section 31 and an extension section 32. The connecting section 31 is specifically tubular and is coaxially arranged with the valve core sleeve 2. A plurality of second connecting holes 311 are provided on the connecting section 31. In some specific embodiments shown, two second connecting holes 311 are provided, and the two second connecting holes 311 are symmetrically distributed along the axis of the connecting section 31. When the plug-type coating valve is opened, the second connecting hole 311 is arranged corresponding to the first connecting hole 21, so that the slurry flows into the valve core 3 through the inlet 111, the first connecting hole 21 and the second connecting hole 311 in sequence, and then flows out of the housing 1 through the second connecting hole 311, the first connecting hole 21 and the outlet 121 in sequence. It can be understood that this is not a specific limitation on the number of the second connecting holes 311, and technicians in the relevant field can replace them on this basis.

[0042] The extension section 32 is located at both ends of the connecting section 31 in the axial direction. The diameter of the extension section 32 gradually decreases in the direction away from the connecting section 31. When the slurry flows into the valve core 3, the change in the diameter of the extension section 32 causes the pressure of the slurry to steadily increase to a constant pressure. The slurry is linearly pressurized or depressurized, which is beneficial to improving the stability of the fluid flow, thereby improving the coating effect of the electrode.

[0043] When the plug-type coating valve is closed, the valve core 3 is in the initial state, the second connecting hole 311 and the first connecting hole 21 are roughly offset, and the valve core 3 blocks the passage of the slurry. When the plug-type coating valve is opened, the valve core 3 is rotated, wherein the valve core 3 preferably but not limited to using an electrode as a driving source to drive the valve core 3 to rotate relative to the valve core sleeve 2. When the valve core 3 rotates until the second connecting hole 311 corresponds to the first connecting hole 21, the inflow section 11, the valve core sleeve 2, the valve core 3 and the outflow section 12 form a channel for the slurry to flow, and the slurry can flow into the valve core 3 through the inlet 111, the first connecting hole 21 and the second connecting hole 311 in turn, and then flow out of the valve core sleeve 2 through the second connecting hole 311 and the first connecting hole 21 on the corresponding side in turn, and finally flow out of the shell 1 from the outlet 121 for electrode coating.

[0044] The valve core 3 achieves the effect of opening or closing through rotational motion, which is beneficial to reduce the influence of fluid impact generated by the slurry on the coating effect at the moment of opening or closing of the traditional flow control coating valve, and is beneficial to improve the uniformity and stability of the electrode coating, and realize high-precision control of the slurry coating process.

[0045] Embodiment 2:

[0046] The difference between this embodiment and embodiment 1 is that this embodiment further optimizes the structure of the valve core 3 of the utility model, see Figure 2 .

[0047] The extension section 32 of this embodiment is a multi-stage sleeve structure with a stepped diameter, that is, the diameter of the extension section 32 is stepped along the axial direction. In a preferred embodiment, a transition section 33 is provided between the extension section 32 and the connecting section 31, and the transition section 33 is a conical tubular structure, wherein the large diameter end of the transition section 33 is connected to the connecting section 31, and the small diameter end of the transition section 33 is connected to the extension section 32, so that the slurry maintains a stable pressure change when flowing between the connecting section 31 and the extension section 32, thereby improving the coating effect of the electrode.

[0048] Embodiment 3:

[0049] The difference between this embodiment and embodiment 2 is that this embodiment further optimizes the structure of the housing 1 of the utility model, see Figure 3 .

[0050] In this embodiment, a first sealing end cover 6 is provided at one end of the housing 1 along the axial direction. The first sealing end cover 6 is detachably connected to the housing 1. Specifically, the first sealing end cover 6 and the housing 1 are assembled by bolts. A sealing through hole 61 is provided on the outer wall of the first sealing end cover 6. The extension section 32 is penetrated in the sealing through hole 61. A sealing ring 62 is provided between the outer wall of the extension section 32 and the hole wall of the sealing through hole 61. The sealing ring 62 is preferably, but not limited to, an O-type rubber sealing ring 62. The extension section 32 and the first sealing end cover 6 are sealed and connected by the sealing ring 62.

[0051] The housing 1 is provided with second sealing end covers 7 at both ends along the axial direction. The second sealing end covers 7 are detachably connected to the housing 1. Specifically, the second sealing end covers 7 and the housing 1 are assembled by bolts.

[0052] A sealing adjustment component 4 is provided between the housing 1 and the valve core 3. In a preferred embodiment, the sealing adjustment component 4 includes a sealing sleeve 41. Specifically, two sealing sleeves 41 are provided. Both sealing sleeves 41 are sleeved on the extension section 32 and are respectively located on both sides of the valve core sleeve 2 in the axial direction. The sealing sleeve 41 is specifically a conical sealing sleeve 41, so that the sealing sleeve 41 is adapted to the transition section 33, thereby ensuring the sealing inside the housing 1. A clamping nut 42 is provided on the side of the sealing sleeve 41 away from the valve core 3. The clamping nut 42 is threadedly connected to the inner wall of the housing 1. The clamping nut 42 presses the sealing sleeve 41 against the corresponding side of the valve core sleeve 2 to improve the sealing effect of the sealing sleeve 41. The operator can adjust the degree of compression of the clamping nut 42 to squeeze the sealing sleeve 41 by rotating the clamping nut 42, thereby playing a role in sealing adjustment to adapt to different fluid sealing requirements.

[0053] A bearing 5 is provided between the shell 1 and the extension section 32. The extension section 32 is inserted into the bearing 5. The bearing 5 is preferably, but not limited to, a 6303 deep groove ball bearing 5. The extension section 32 is rotationally connected to the shell 1 through the bearing 5, which is beneficial to improving the adjustment stability of the plug-type coating valve at the moment of opening or closing.

[0054] In a preferred embodiment, the stopper includes a stopper sleeve 22. Specifically, two stopper sleeves 22 are provided, and the two stopper sleeves 22 are respectively inserted into the inflow section 11 and the outflow section 12, so that the slurry can flow into and out of the housing 1 along the stopper sleeve 22. A stopper groove 221 is provided at one end of the stopper sleeve 22 close to the valve core sleeve 2. As shown in some specific embodiments, the stopper groove 221 is an arc groove, and the stopper sleeve 22 is adapted to the valve core sleeve 2 at the arc groove, which is conducive to improving the stopping effect of the stopper sleeve 22. The groove wall of the stopper groove 221 abuts against the outer wall of the valve core sleeve 2. At this time, the stopper sleeve 22 can limit the valve core sleeve 2 from rotating with the rotation of the valve core 3.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. 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.

[0057] 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.

[0058] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0059] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A plug-type coating valve, characterized in that: include A shell (1), wherein the shell (1) is provided with an inlet (111) and an outlet (121); A valve core sleeve (2) is arranged in the housing (1), a plurality of first communication holes (21) are formed on the valve core sleeve (2), the plurality of first communication holes (21) are respectively arranged corresponding to the inlet (111) and the outlet (121), and a stopper is arranged between the valve core sleeve (2) and the housing (1) for limiting the rotation of the valve core sleeve (2); and A valve core (3) is rotatably disposed in the valve core sleeve (2), and the valve core (3) comprises a connecting section (31) and an extension section (32), wherein a plurality of second connecting holes (311) are provided on the connecting section (31), and when the plug-type coating valve is opened, the second connecting holes (311) are correspondingly arranged with the first connecting holes (21) to allow fluid to flow, and the diameter of the extension section (32) gradually decreases in a direction away from the connecting section (31).

2. The plug-type coating valve according to claim 1, characterized in that: The extension section (32) is a multi-stage sleeve structure with a diameter that decreases in a step-by-step manner.

3. The plug-type coating valve according to claim 1, characterized in that: A sealing adjustment component (4) is provided between the valve core sleeve (2) and the housing (1).

4. The plug-type coating valve according to claim 3, characterized in that: The sealing adjustment assembly (4) comprises A sealing sleeve (41) is sleeved on the valve core (3) and is located on one side of the valve core sleeve (2); as well as The clamping nut (42) is sleeved on the valve core (3) and is threadedly connected to the inner wall of the housing (1). The clamping nut (42) squeezes the sealing sleeve (41) to the corresponding side of the valve core sleeve (2).

5. The plug-type coating valve according to claim 4, characterized in that: A transition section (33) is provided between the connecting section (31) and the extending section (32), and the transition section (33) is a conical tubular structure.

6. The plug-type coating valve according to claim 5, characterized in that: The sealing sleeve (41) is a conical sealing sleeve (41) and is adapted to the transition section (33).

7. The plug-type coating valve according to claim 1, characterized in that: A bearing (5) is arranged inside the housing (1), and the valve core (3) is inserted into the bearing (5).

8. The plug-type coating valve according to claim 1, characterized in that: The shell (1) is provided with a first sealing end cover (6), the first sealing end cover (6) is provided with a sealing through hole (61), the extension section (32) is passed through the sealing through hole (61), and a sealing ring (62) is provided between the outer wall of the extension section (32) and the hole wall of the sealing through hole (61).

9. The plug-type coating valve according to claim 8, characterized in that: The first sealing end cover (6) is detachably connected to the housing (1).

10. The plug-type coating valve according to claim 1, characterized in that: The stop member comprises a stop sleeve (22), the stop sleeve (22) comprises a stop end, a stop groove (221) is provided on the stop end, and a groove wall of the stop groove (221) abuts against an outer wall of the valve core sleeve (2).

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