CN216440073U - Electrode slurry filtering device and electrode slurry filtering system - Google Patents

Abstract

The utility model relates to an electrode slurry filtering device and an electrode slurry filtering system. The electrode slurry filtering device comprises a box body, a filtering container, a holding container, a funnel and a vacuum generating device. A cavity is formed in the case. The filtering vessel includes a screen and serves to contain the electrode slurry to be filtered. A holding container is used for holding the filtered electrode slurry, and the box body is configured to allow the holding container to be placed in a cavity of the box body and taken out of the cavity of the box body. The funnel is detachably and hermetically mounted on the top wall of the case, the filtering receptacle is detachably and hermetically mounted on the funnel, and the funnel includes a passage for communicating the cavity with the filtering receptacle and guiding the filtered electrode slurry to the holding receptacle. A vacuum generating device is in fluid communication with the cavity for generating a negative pressure in the cavity. The electrode slurry filtering system comprises the electrode slurry filtering device and the movable trolley.

Description

Electrode slurry filtering device and electrode slurry filtering system

Technical Field

The utility model relates to an electrode slurry filtering device and an electrode slurry filtering system.

Background

Multilayer Ceramic capacitors (MLCCs) are the most widely used in chip components, and metal internal electrode materials and Ceramic green bodies are alternately stacked in parallel in multiple layers and co-fired into a whole, which is also called monolithic capacitors. With the increasing demand for multilayer ceramic capacitors, the demand for metal internal electrode materials is also increasing. The metal inner electrode material is used as a valuable raw material, and large particle agglomerates exist after the metal inner electrode material is manufactured and used, so that the product quality is reduced. To filter out these large particles, a slurry filter is used.

At present, a ceramic slurry filter used is connected with compressed air for pressurization to filter, the filter can only filter slurry with low viscosity, and is large in size and complex in structure, a large amount of slurry can be remained in the filter after filtering, and the filter cannot be suitable for efficient filtering of a small amount of expensive electrode slurry in various models.

SUMMERY OF THE UTILITY MODEL

Since the prior art does not satisfy the demand, it is a primary object of the present invention to provide an electrode paste filtering apparatus. The electrode slurry filtering device comprises a box body, a filtering container, a holding container, a funnel and a vacuum generating device. A cavity is formed in the case. The filtration vessel includes a screen and is for containing electrode slurry to be filtered. The container is used for containing filtered electrode slurry, and the box body is configured to allow the container to be placed in a cavity of the box body and taken out of the cavity of the box body. The funnel is detachably and hermetically installed on the top wall of the case, the filtering container is detachably and hermetically installed on the funnel, and the funnel includes a passage for communicating the cavity with the filtering container and guiding the filtered electrode slurry to the receiving container. The vacuum generating means is in fluid communication with the cavity for generating a negative pressure in the cavity.

The device disclosed by the utility model realizes the filtration of the electrode slurry by adopting a high negative pressure mode, and has the advantages of simple structure, no pollution, low loss, high model change speed and high efficiency.

In an exemplary embodiment, the cabinet includes a cabinet body and a door hinged to the cabinet body, the door being pivotable between an open position and a closed position in which a first seal is disposed between the door and the cabinet body; the cabinet further includes a locking device for locking the door in the closed position.

In an exemplary embodiment, the box body includes the top wall in which a funnel mounting hole is formed; the funnel comprises a base plate and inner and outer annular walls extending from a lower surface of the base plate, the base plate comprising a central aperture, the inner annular wall and the outer annular wall having a common axis; said outer annular wall being inserted into said funnel mounting aperture, said base plate being supported by said top wall with a second sealing ring disposed between said base plate and said top wall; and the inner annular wall forms the channel.

In an exemplary embodiment, the filtering container includes a ring-shaped body having a bottom end integrally formed with an annular protrusion; and the upper surface of the base plate is provided with a third sealing ring, and the annular bulge is pressed against the third sealing ring.

In an exemplary embodiment, the electrode slurry filtering apparatus further includes a lifting table in the cavity for supporting and lifting the holding container.

In an exemplary embodiment, the electrode slurry filtration device further includes a pressure control member connected between the cavity and the vacuum generating device.

In an exemplary embodiment, the screen is a micron-sized screen.

In an exemplary embodiment, at least a portion of the housing is made of a fully transparent material.

In an exemplary embodiment, the funnel is made of a corrosion resistant material.

In another aspect, there is provided an electrode slurry filtration system comprising: the electrode slurry filtering device; and the box body is arranged on a platform of the movable trolley, and the vacuum generating device is arranged in the movable trolley.

Drawings

Some embodiments of the utility model will now be described, by way of example only, with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like elements.

Fig. 1 is a schematic perspective view of an electrode slurry filtration system including an electrode slurry filtration apparatus in an exemplary embodiment.

Fig. 2 is a perspective view of a case of the electrode slurry filtering apparatus of fig. 1.

Fig. 3 is a sectional view of a funnel of the electrode slurry filtering apparatus of fig. 1.

Fig. 4 shows a cross-sectional view of the filter container and the funnel of the electrode slurry filter device of fig. 1 before assembly.

Detailed Description

The figures and the following description provide specific exemplary embodiments of the utility model. It will thus be appreciated that those skilled in the art will be able to devise various arrangements which, although not explicitly described or shown herein, embody the principles of the utility model and are included within its scope. Moreover, any examples described herein are intended to aid in understanding the principles of the utility model and are to be construed as being without limitation to such specifically recited examples and conditions. Accordingly, the utility model is not limited to the specific embodiments or examples described below, but by the claims.

Fig. 1 is a schematic perspective view of an electrode slurry filtration system including an electrode slurry filtration apparatus in an exemplary embodiment. Fig. 2 is a perspective view of a case of the electrode slurry filtering apparatus of fig. 1. Fig. 3 is a sectional view of a funnel of the electrode slurry filtering apparatus of fig. 1. Fig. 4 shows a cross-sectional view of the filter container and the funnel of the electrode slurry filter device of fig. 1 before assembly.

As shown in fig. 1, the electrode slurry filtration system 10 includes an electrode slurry filtration device 20. The electrode slurry filtering apparatus 20 includes a case 30, a filtering container 40, a holding container 50, a funnel 60, a lifting table 70, a pressure control member 80, and a vacuum generating means (not shown). The electrode slurry filtration system 10 also includes a movable cart 90. The case 30 may be placed on the upper surface of the movable carriage 90, and a vacuum generating device (not shown) may be placed in the receiving space of the movable carriage 90.

As shown in fig. 1 and 2, the cabinet 30 includes a cabinet body 31 and a door 32 hinged to the cabinet body 31. The case body 31 is hollow and has a cavity for accommodating the accommodating container 50 and the elevating platform 70. The door 32 is pivotable about a vertical axis between an open position and a closed position. When the door 32 is in the open position as shown in fig. 1 and 2, the receiving container 50 may be placed in the cavity of the case body 31 or the receiving container 50 may be taken out from the cavity of the case body 31. When the door 32 is in the closed position, a first seal ring 33 (see fig. 2) is located between the box body 31 and the door 32. As shown in the drawing, the first seal ring 33 is attached to the front end surface of the case body 31. For example, the first seal ring 33 may be fitted in an annular groove in the front end surface of the tank main body 31. However, in other examples, the first seal ring 33 may be mounted on the rear end surface of the door 32. Additionally, the door 32 may also include a handle 34 (see FIG. 2) to facilitate opening and closing of the door 32 by a user. In addition, the cabinet 30 may further include a locking device 35 for locking the door 32 in the closed position. For such locking means, any structure known to the person skilled in the art may be used. For example, in the example shown in fig. 1 and 2, the locking device 35 may include two catches on the box body 31 and two catches on the side of the door 32. In other examples, the locking device 35 may include a magnet mounted on the cabinet body 31 and/or the door 32.

The box body 31 forms a rear wall, a left wall, a right wall, a top wall, and a bottom wall of the box body 30. Door 32 forms a front wall of cabinet 30 when door 32 is in the closed position. As shown in fig. 2, a funnel mounting hole 36 is provided in the top wall of the cabinet 30 for mounting a funnel 60. In addition, a vent 37 is provided in the top wall of the tank body 30 in fluid communication with the cavity of the tank body 30 for connection by a line to a vacuum generating device to provide a negative pressure in the cavity of the tank body 30. In other examples, vent 37 may be provided in other locations, such as a rear wall or left or right wall of tank 30. In addition, a second gasket 38 is provided on the top wall of the box body 30 around the funnel mounting hole 36. In particular, the second sealing ring 38 may be mounted in an annular groove on the top wall. In addition, a supporting block 39 can be arranged on the bottom wall of the box body 31, so that the box body can be conveniently conveyed and stably supported.

At least a portion of housing 30 may be made of a fully transparent material in order to clearly see the conditions within the interior cavity of housing 30. In some examples, the cabinet body 31 and the door 32 of the cabinet 30 may all be made of a fully transparent material. In other embodiments, only the door 32 may be made entirely of a fully transparent material. In other embodiments, only a portion of the door 32 may be made of a fully transparent material. The fully transparent material may be any material that is transparent to visible light and has sufficient mechanical strength, such as glass, acrylic, and the like. In addition, the walls of the housing 30 are also of sufficient thickness so as not to deform when subjected to negative pressure.

Although the exemplary embodiment shown in the figures shows the housing 30 as being substantially square, in other examples, the housing 30 may be other shapes, such as a rectangular parallelepiped or a cylinder.

As shown in fig. 1, the funnel 60 is mounted in the funnel mounting hole 36 (see fig. 2) of the cabinet 30. As shown in fig. 3, the funnel 60 includes a base 61 and inner and outer annular walls 62, 63 extending axially from a lower surface of the base 61, the outer annular wall 63 being located radially outwardly of the inner annular wall 62. In addition, the base plate 61 has a center hole 64. The inner annular wall 62, the outer annular wall 63, and the central aperture 64 may have a common axis 65. While in the example shown in FIG. 3, the axial length of the inner annular wall 62 is greater than the axial length of the outer annular wall 63, in other examples, the axial length of the inner annular wall 62 may be less than or equal to the axial length of the outer annular wall 63. The outer diameter of outer annular wall 63 may match the diameter of funnel mounting hole 36 of tank 30. As shown in fig. 1, when the outer annular wall 63 of the funnel 60 is inserted into the funnel mounting hole 36 of the tank 30, the base plate 61 is supported by the top wall of the tank 30, and the second seal ring 38 is located between the base plate 61 and the top wall of the tank 30. This allows for a simple and quick installation of the funnel 60 and the tank 30 and a sealed connection between the funnels 60 and the cavities of the tank 30.

Although in the illustrated embodiment the second sealing ring 38 is mounted on the top wall of the tank 30, in other embodiments the second sealing ring 38 may be mounted on the bottom surface of the base plate 61 of the funnel 60, radially outside the outer annular wall 63. In the installed position of the funnel 60 shown in fig. 1, at least a portion of the inner annular wall 62 is located within the cavity of the housing 30.

As shown in fig. 3, a third seal ring 66 is provided on the upper surface of the base plate 61 around the central hole 64. A third seal ring 66 is located between the inner annular wall 62 and the outer annular wall 63 in the radial direction, projecting from the upper surface of the base plate 61 in the axial direction. In some examples, the third seal ring 66 may be mounted in an annular groove in the upper surface of the base plate 61. In other examples, third seal ring 66 may be bonded to the upper surface of base plate 61 by an adhesive.

Since the funnel 60 is in contact with the electrode paste in operation, the funnel 60 is made of a corrosion-resistant material to increase durability of the funnel 60 and prevent impurities from being added to the electrode paste. For example, the corrosion-resistant material may be SUS316 stainless steel. In addition, in order to prevent the electrode paste from sticking to the funnel and to facilitate cleaning of the funnel, the surfaces of the funnel 60 that will come into contact with the electrode paste (particularly, the upper surface of the base plate 61, the inner surface of the central hole 64, and the inner surface of the inner annular wall 62) are smooth and flat.

As shown in fig. 1, the filtering container 40 includes a ring-shaped body and a screen installed at the bottom end of the ring-shaped body for receiving the electrode slurry to be filtered, leaving large granular impurities in the electrode slurry on the upper portion of the mesh, and the remaining slurry passing through the mesh. In some embodiments, the screen may be a micron-sized screen. In particular, the micron-sized screen may be 1000 mesh or more, preferably 1500 mesh.

As shown in fig. 4, an annular protrusion 41 is formed at the bottom end of the annular body of the filtering container 40. In assembly, the filter capsule 40 is mounted on the funnel 60 so that the annular projection 41 of the filter capsule 40 is pressed against the third sealing ring 66 mounted on the upper surface of the base plate 61 of the funnel 60. The outer diameter of third seal ring 66 may be greater than the outer diameter of annular protrusion 41 and the inner diameter of third seal ring 66 may be less than the inner diameter of annular protrusion 41. The third sealing ring 66 and the annular projection 41 serve for positioning and sealing. This allows a simple and quick mounting of the filter container 40 on the funnel 60 and a sealed connection of the filter container 40 and the funnel 60.

Although in the illustrated embodiment the third sealing ring 66 is provided on the upper surface of the base plate 61 of the funnel 60 and the annular protrusion 41 is formed integrally with the filter vessel 40, in other embodiments the positions of the third sealing ring 66 and the annular protrusion 41 may be interchanged, i.e. the third sealing ring 66 may be provided at the bottom end of the filter vessel 40 and the annular protrusion 41 may be formed integrally with the base plate 61 of the funnel 60.

As shown in fig. 1, a holding container 50 is disposed in the cavity of the case 30 for holding the filtered electrode slurry. In the illustrated embodiment, the inner diameter of the holding vessel 50 is larger than the inner diameter of the inner annular wall 62 of the funnel 60, and the holding vessel 50 is vertically aligned with the inner annular wall 62 of the funnel 60 such that the inner annular wall 62 guides the filtered electrode slurry into the holding vessel 50. In addition, the holding container 50 may be made of a corrosion-resistant material. For example, the corrosion resistant material may be polytetrafluoroethylene.

The electrode slurry can be copper slurry, silver slurry and the like. The electrode slurry filtering device can be used for filtering various electrode slurries, and only needs to conveniently replace a new filtering container, a new funnel and a new containing container.

As shown in fig. 1, an elevating table 70 is disposed in the cavity of the case 30 for supporting the receiving container 50, and the height of the elevating table 70 may be adjusted so that the receiving container 50 is adjusted to a suitable height to prevent the electrode slurry from being splashed outside the receiving container 50. In addition, the elevating platform 70 may be disposed to be substantially aligned with the inner annular wall 42 of the holding container 50 and the funnel 60 in a vertical direction.

As shown in fig. 1, the pressure control member 80 may be connected between the cavity of the case 30 and the vacuum generating device. In the illustrated embodiment, the pressure control 80 is mounted to the vent 37 in the top wall of the tank body 30. The pressure control member 80 includes a negative pressure indicating gauge 81, a first regulating valve 82, a second regulating valve 83, and an air filter (not shown) for providing a certain negative pressure value by which the electrode slurry is sucked from the upper portion of the screen to the lower portion of the screen of the filtering vessel 40. The negative pressure indicator gauge 81 may indicate a value of negative pressure in the cavity of the housing 30. The first regulator valve 82 may be actuated to rapidly open and close the negative pressure source. In addition, the second regulating valve 83 may be adjusted to control the amount of negative pressure in the cavity of the tank 30. The air filter of the pressure control member 80 may filter impurities in the air to avoid introducing impurities into the electrode paste.

As shown in fig. 1, the movable cart 90 may include a platform 91, a ground chain, a control box, etc. for placing the electrode slurry filtering device 20. Specifically, the box 30 (inside which the lifting table 70 and the containing vessel 50 are placed, on the top wall of which the funnel 60, the filtering vessel 40, the pressure control member 80 are supported) is placed on a platform 91 of the movable carriage 90, and the vacuum generating means (not shown) is placed in the internal compartment of the movable carriage 90, in gaseous communication with the pressure control member 80 through a duct (not shown). The movable cart 90 can rapidly move the electrode slurry filtration apparatus 20 to a place where filtration is required. For example, the movable cart 90 may be a dolly or a self-propelled cart. The periphery of the platform 91 includes an upturn 92 to prevent the casing 30 from sliding off the platform 91, particularly during movement of the electrode slurry filter assembly 20.

The operation of the electrode slurry filtration system 10 of the exemplary embodiment of the present invention will be described below.

After the components of the electrode slurry filtering system 10 are assembled as shown in fig. 1, the platform height of the lifting table 70 is adjusted by adjusting the adjusting knob of the lifting table 70, so that the vertical height of the upper opening of the holding container 50 is slightly higher than the vertical height of the lower opening of the inner annular wall 62 of the funnel 60, so as to prevent the filtered electrode slurry from splashing outside the holding container 50, thereby preventing the electrode slurry from being wasted and keeping the inner cavity of the box 30 and the lifting table 70 clean.

The door 32 is closed and the door 32 is locked in the closed position by the locking device 35. At this time, the inner surface of the door 32 is just pressed against the first gasket 33 on the front end surface of the box body 31, and the door 32 is sealingly connected to the box body 31.

The first regulating valve 82 of the pressure control member 80 is adjusted to an open position, and a fixed amount of the electrode slurry to be filtered is added to the filtering container 40. The switch of the vacuum generating means (e.g., a vacuum pump) inside the movable carriage 90 is activated, and the second regulating valve 83 is regulated to adjust the negative pressure value in the cavity of the tank 30 to a prescribed negative pressure value (e.g., about 0.08 MPa). The negative pressure indicator 81 may indicate a value of negative pressure in the cavity of the case 30.

At this time, the electrode slurry in the filtering container 40 flows through the micron-sized mesh of the screen to the central hole 64 of the base plate 61 of the funnel 60, and then flows downward through the inner surface of the inner annular wall 62 until it flows into the holding container 50. After no electrode slurry is present in the filtration vessel 40, the switch of the vacuum generator is turned off. Since at least a part (for example, all) of the case 30 is designed by using a fully transparent material, the state of the inside of the case 30 when the electrode paste is filtered can be seen, and the electrode paste can be found at the first time when an abnormality occurs, thereby avoiding abnormal loss of the expensive electrode paste. And then, adjusting the second adjusting valve 83 again, opening the locking device 35 after the pressure value indicated by the negative pressure indicator 81 is 0, lowering the height of the lifting table 70, taking out the holding container 50, and covering the cover of the holding container 50, thereby completing the rapid filtration of the electrode slurry.

The whole filtering process is simple and convenient to operate, the electrode slurry is less in contact with a machine, pollution-free, low in loss, high in filtering speed and efficiency, different slurries are fast in remodeling, and the electrode slurry filtering device is very suitable for the requirements of electrode slurry filtration.

Although specific embodiments have been described herein, the scope of the utility model is not limited to those specific embodiments. For example, the electrode slurry filtration device need not include all of the components described above, but may include some of them. In addition, the electrode slurry filtration device may include other components not described above.

Claims (10)

1. An electrode slurry filtering apparatus, comprising:

a case in which a cavity is formed;

a filtering container including a screen and for containing an electrode slurry to be filtered;

a holding container for holding the filtered electrode slurry, the case being configured to allow the holding container to be placed in and removed from a cavity of the case;

a funnel detachably and hermetically mounted on a top wall of the case, the filtering receptacle detachably and hermetically mounted on the funnel, and the funnel including a passage for communicating the cavity with the filtering receptacle and guiding the filtered electrode slurry to the holding receptacle; and

a vacuum generating device in fluid communication with the cavity for generating a negative pressure in the cavity.

2. The electrode slurry filtering device according to claim 1, wherein the case includes a case main body and a door hinged to the case main body, the door being pivotable between an open position and a closed position in which a first seal ring is provided between the door and the case main body; the cabinet further includes a locking device for locking the door in the closed position.

3. The electrode slurry filtering device according to claim 2, wherein the case body includes the top wall in which a funnel mounting hole is formed; the funnel comprises a base plate and inner and outer annular walls extending from a lower surface of the base plate, the base plate comprising a central aperture, the inner annular wall and the outer annular wall having a common axis; said outer annular wall being inserted into said funnel mounting aperture, said base plate being supported by said top wall with a second sealing ring disposed between said base plate and said top wall; and the inner annular wall forms the channel.

4. The electrode slurry filtering device according to claim 3, wherein the filtering container includes an annular body having a bottom end integrally formed with an annular protrusion; and the upper surface of the base plate is provided with a third sealing ring, and the annular bulge is pressed against the third sealing ring.

5. The electrode slurry filtering apparatus according to claim 1, further comprising a lifting table in the cavity for supporting and lifting the holding container.

6. The electrode slurry filtration device according to claim 1, further comprising a pressure control member connected between the cavity and the vacuum generating device.

7. The electrode slurry filtering device according to any one of claims 1 to 6, wherein the mesh is a micron-sized mesh.

8. The electrode slurry filtering device according to any one of claims 1 to 6, wherein at least a portion of the case is made of a fully transparent material.

9. The electrode slurry filtration device according to any one of claims 1 to 6, wherein the funnel is made of a corrosion resistant material.

10. An electrode slurry filtration system, comprising:

the electrode slurry filtration device of any one of claims 1 to 9; and

the box body is arranged on a platform of the movable trolley, and the vacuum generating device is arranged in the movable trolley.

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