Powder adding structure and stirring device

Abstract

The embodiment of the utility model discloses a powder adding structure and a stirring device, the powder adding structure comprises a hopper, a plug column, a first plug block and a second plug block, the hopper is provided with a feeding port and a discharging port, the feeding port and the discharging port are arranged at intervals in the axial direction, and the feeding port is located above the discharging port; the plunger is movably arranged in the hopper in a penetrating manner; the first plug block is arranged on the plug column; the second plug block is arranged on the plug column, the second plug block and the first plug block are arranged at an interval in the axial direction, and the second plug block is located above the first plug block; in the feeding state, external force drives the plug column to move upwards, so that the first plug block seals the discharging opening, and the second plug block opens the feeding opening; in the discharging state, external force drives the plug column to move downwards, so that the first plug block opens the discharging opening, and the second plug block closes the discharging opening. According to the utility model, the problems of low powder adding precision, poor stability and complicated operation of the existing stirring device are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a powder adding structure and a stirring device. Background Art

[0002] Chip capacitors, also known as MLCCs, are made of ceramic dielectric diaphragms with printed electrodes stacked in an offset manner. After a one-time high-temperature sintering, a ceramic chip is formed, and then a metal layer (external electrode) is sealed at both ends of the chip to form a monolithic structure.

[0003] The manufacture of MLCC involves stirring ceramic powder mixed with solvent, dispersant, binder and plasticizer through a stirring device to form a uniform, suspended ceramic slurry. The uniformity of powder addition during the stirring process is crucial to ensuring product quality. However, the powder addition on the existing stirring device has problems such as low precision, poor stability and complex operation, which affects production efficiency and product quality. Utility Model Content

[0004] The embodiments of the utility model provide a powder adding structure and a stirring device to solve the problems of low precision, poor stability and complicated operation of powder adding in the existing stirring device.

[0005] In order to solve the above technical problems, the embodiments of the present utility model disclose the following technical solutions:

[0006] On the one hand, a powder adding structure is provided, comprising:

[0007] A hopper, wherein the hopper has a feeding port and a discharging port, the feeding port and the discharging port are arranged at intervals in the axial direction, and the feeding port is located above the discharging port;

[0008] A plug, movably disposed in the hopper;

[0009] A first plug block is arranged on the plug column;

[0010] a second plug, disposed on the plug column, the second plug and the first plug arranged in the axial direction with a spacing, and the second plug is located above the first plug;

[0011] Wherein, in the feeding state, an external force drives the plug to move upward so that the first plug closes the discharge port and the second plug opens the feeding port; in the discharging state, an external force drives the plug to move downward so that the first plug opens the discharge port and the second plug closes the discharge port.

[0012] In one embodiment, the hopper comprises:

[0013] Feeding section;

[0014] The feeding section is arranged on the feeding section, the feeding port and the discharging port are respectively located at two ends of the feeding section, and the feeding port is communicated with the feeding section.

[0015] In one embodiment, the feed section is truncated cone-shaped, the inner diameter of the end of the feed section away from the feeding section is W1, and the inner diameter of the end of the feed section close to the feeding section is W2, wherein W1 and W2 satisfy the following relationship: W1>W2.

[0016] In one embodiment, the feeding section is cylindrical, and the inner diameter of the feeding section is W2;

[0017] Wherein, in the feeding state, the first plug block is partially located in the feeding section, and the second plug block is located above the feeding port; in the discharging state, the second plug block is partially located in the feeding section, and the first plug block is located below the discharging port.

[0018] In one embodiment, the first plug is truncated cone-shaped, the diameter of the first plug away from the plug is W3, and the diameter of the first plug close to the plug is W4, wherein W2, W3, and W4 satisfy the following relationship: W3<W2<W4.

[0019] In one embodiment, the second plug is truncated cone-shaped, the diameter of the second plug away from the first plug is W5, and the diameter of the second plug close to the first plug is W6, wherein W1, W2, W5, and W6 satisfy the following relationship: W6<W2<W5<W1.

[0020] In one embodiment, the side wall of the second plug is parallel to the inner wall of the feed section.

[0021] In one embodiment, the powder adding structure further comprises:

[0022] A first baffle, disposed on the plug column and located above the first plug block;

[0023] A second baffle, disposed on the plug column, the second baffle being located between the first baffle and the first plug block;

[0024] The second plug is movably disposed on the plug column, and the second plug is located between the first baffle and the second baffle.

[0025] In one embodiment, the height of the feeding section is L1, and the distance between the second baffle and the first plug is L2, wherein L1 and L2 satisfy the following relationship: L2>L1.

[0026] On the other hand, a stirring device is further disclosed, comprising a powder adding structure as described in any one of the above items.

[0027] One of the above technical solutions has the following advantages or beneficial effects: this technical solution realizes the free switching of the powder adding structure between the feeding state and the discharging state by arranging a plug to drive the first plug block and the second plug block to reciprocate in the axial direction. In the feeding state, the plug moves upward, so that the first plug block closes the discharge port and the second plug block opens the feeding port. At this time, powder is added to the hopper, and the first plug block prevents the powder from leaking; in the discharging state, the plug moves downward, so that the first plug block opens the discharge port and the second plug block closes the discharge port. At this time, the second plug block prevents further feeding and the powder flows out of the discharge port, thereby realizing the feeding and discharging of the powder, improving the accuracy and stability of the powder adding, and having a simple structure and simple operation, and the speed and stroke of the reciprocating motion of the plug in the axial direction can control the amount of powder entering each time and the interval time of each feeding. In addition, the powder adding device can realize multiple batch addition of powder, which can avoid the problem of adding too much powder at one time and adding too fast, which will cause the powder to agglomerate easily, be difficult to disperse and wet in the solvent, and affect production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The technical solutions and other beneficial effects of the present invention will be made apparent by describing in detail the specific embodiments of the present invention in conjunction with the accompanying drawings.

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the powder adding device provided according to an embodiment of the utility model;

[0030] Figure 2 It is a cross-sectional view of the powder adding device provided in the embodiment of the utility model in the main viewing direction, and the figure shows that the powder adding device is in a feeding state;

[0031] Figure 3 It is a cross-sectional view of a powder adding device provided according to an embodiment of the utility model in the main viewing direction, and the figure shows that the powder adding device is in a discharging state.

[0032] Reference numerals:

[0033] 10. Hopper; 110. Feeding port; 120. Discharging port; 130. Feeding section; 140. Feeding section;

[0034] 20. Plug;

[0035] 30. The first plug;

[0036] 40. Second plug;

[0037] 50. First baffle;

[0038] 60. Second baffle;

[0039] 70. Handle. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and beneficial effects of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described in this specification are only for explaining the utility model, and are not intended to limit the utility model.

[0041] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, the meaning of "multiple" refers to two or more, unless otherwise clearly and specifically defined.

[0042] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, 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 utility model can be understood according to specific circumstances.

[0043] In the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0044] The manufacture of MLCC involves stirring ceramic powder mixed with solvent, dispersant, binder and plasticizer through a stirring device to form a uniform, suspended ceramic slurry. The uniformity of powder addition during the stirring process is crucial to ensuring product quality. However, the powder addition on the existing stirring device has problems such as low precision, poor stability and complex operation, which affects production efficiency and product quality.

[0045] like Figure 1-3 As shown, in order to solve the problems of low precision, poor stability and complicated operation of the existing powder addition, the present utility model provides a powder addition structure, including a hopper 10, a plug 20, a first plug 30 and a second plug 40; the hopper 10 has a feed port 110 and a discharge port 120, the feed port 110 and the discharge port 120 are arranged at intervals in the axial direction, and the feed port 110 is located above the discharge port 120; the plug 20 is movably arranged in the hopper 10; the first plug 30 is arranged on the plug 20; the second plug 40 is arranged on the plug 2 0, the second plug 40 and the first plug 30 are arranged at intervals in the axial direction, and the second plug 40 is located above the first plug 30; wherein, in the feeding state, the external force drives the plug 20 to move upward, so that the first plug 30 closes the discharge port 120 and the second plug 40 opens the feeding port 110; in the discharging state, the external force drives the plug 20 to move downward, so that the first plug 30 opens the discharge port 120 and the second plug 40 closes the discharge port 120.

[0046] As can be seen from the above, by setting the plug 20 to drive the first plug block 30 and the second plug block 40 to reciprocate in the axial direction, the powder adding structure can be freely switched between the feeding state and the discharging state. In the feeding state, the plug 20 moves upward, so that the first plug block 30 closes the discharge port 120 and the second plug block 40 opens the feeding port 110. At this time, powder is added to the hopper 10, and the first plug block 30 prevents the powder from leaking; in the discharging state, the plug 20 moves downward, so that the first plug block 30 opens the discharge port 120 and the second plug block 40 closes the discharge port 120. At this time, the second plug block 40 prevents further feeding and the powder flows out of the discharge port 120, thereby realizing the feeding and discharging of the powder, improving the accuracy and stability of the powder adding, and the structure is simple and the operation is simple. The speed and stroke of the reciprocating motion of the plug 20 in the axial direction can control the amount of powder entering each time and the interval time of each feeding. In addition, the powder adding device can realize multiple batch addition of powder, which can avoid the problem of adding too much powder at one time and adding too fast, which will cause the powder to agglomerate easily, be difficult to disperse and wet in the solvent, and affect production efficiency and product quality.

[0047] It should be noted that the external force includes but is not limited to the force provided by manual operation of the plunger 20, and also includes the force provided by the motor or cylinder connected to the plunger 20 to drive the plunger 20 to move. Of course, compared with manual operation, the use of a motor or cylinder connected to the plunger 20 can realize automatic feeding and automatic discharging, and the accuracy and stability of powder addition will be better, and the amount of powder entering and the feeding interval time can be more accurately controlled;

[0048] In addition, the specific structure of the motor and the cylinder, as well as the specific connection method with the plug 20 are all existing technologies and will not be repeated in this application.

[0049] It should also be noted that when the plug 20 is manually operated as the external force, the powder adding device further comprises a handle 70 , which is disposed on an end of the plug 20 away from the first plug block 30 , so that the operator can operate the plug 20 .

[0050] It should also be noted that the powder includes but is not limited to ceramic powder.

[0051] It should also be noted that if Figure 1 As shown, the axial direction is parallel to the Z direction.

[0052] In some embodiments, the hopper 10 includes a feed section 130 and a charging section 140 ; ​​the charging section 140 is disposed on the feed section 130 , the charging port 110 and the discharge port 120 are respectively located at two ends of the feeding section 140 , and the charging port 110 is connected to the feeding section 130 .

[0053] It should be noted that the connection methods between the feed section 130 and the feeding section 140 include but are not limited to welding and one-piece mold forming.

[0054] In some embodiments, the feed section 130 is truncated cone-shaped, the inner diameter of the end of the feed section 130 away from the feeding section 140 is W1, and the inner diameter of the end of the feed section 130 close to the feeding section 140 is W2, wherein W1 and W2 satisfy the following relationship: W1>W2.

[0055] By setting the feeding section 130 as a circular cone with a larger upper portion and a smaller lower portion, not only a structural basis is provided for the second plug 40 to close the feeding port 110 , but also the powder can be ensured to fall smoothly under the action of gravity, thus avoiding blockage and completing the feeding.

[0056] In some embodiments, the feeding section 140 is cylindrical, and the inner diameter of the feeding section 140 is W2; wherein, in the feeding state, the first block 30 is partially located in the feeding section 140, and the second block 40 is located above the feeding port 110; in the discharging state, the second block 40 is partially located in the feeding section 140, and the first block 30 is located below the discharging port 120.

[0057] By setting the feeding section 140 to be cylindrical, a structural basis is provided for the cooperation between the first plug 30, the second plug 40 and the discharge port 120 and the feeding port 110, and preparation is made for the powder adding structure to realize the switching between the feeding state and the discharging state.

[0058] In some embodiments, the first plug 30 is truncated cone-shaped, the diameter of the end of the first plug 30 away from the plug 20 is W3, and the diameter of the end of the first plug 30 close to the plug 20 is W4, wherein W2, W3, and W4 satisfy the following relationship: W3<W2<W4.

[0059] By setting the first plug 30 to be a truncated cone with a small top and a large bottom, and setting W3<W2<W4, it is ensured that when the first plug 30 closes the discharge port 120, a portion of the first plug 30 extends into the feeding section 140, so as to further ensure the sealing effect of the discharge port 120. In addition, the first plug 30 is a truncated cone with a small top and a large bottom, which can effectively prevent the powder from accumulating on the first plug 30, and when the plug 20 drives the first plug 30 to move downward, the discharge port 120 gradually becomes larger, which can effectively prevent the powder from being added too quickly and prevent the powder from clumping.

[0060] It should be noted that the first plug block 30 is disposed at the bottom of the plug rod 20 , and the connection method between the first plug block 30 and the plug rod 20 includes but is not limited to an integral connection by welding or mold forming.

[0061] In some embodiments, the second plug 40 is truncated cone-shaped, the diameter of the end of the second plug 40 away from the first plug 30 is W5, and the diameter of the end of the second plug 40 close to the first plug 30 is W6, wherein W1, W2, W5, and W6 satisfy the following relationship: W6<W2<W5<W1.

[0062] By setting the second plug 40 to be a truncated cone with a larger upper portion and a smaller lower portion, and setting W6<W2<W5<W1, it is ensured that the second plug 40 can smoothly enter and exit the feeding section 130, and when the feeding port 110 is closed, part of the second plug 40 extends into the feeding section 140 to further ensure the closing effect of the feeding port 110.

[0063] In some embodiments, the side wall of the second plug 40 is parallel to the inner wall of the feed section 130 .

[0064] By setting the side wall of the second plug 40 to be parallel to the inner wall of the feed section 130, the shapes of the second plug 40 and the feed section 130 are matched, and the side surface of the second plug 40 can abut against the inner wall of the feed section 130, thereby increasing the contact area between the second plug 40 and the feed section 130, thereby further improving the effect of the second plug 40 in closing the feeding port 110, and reducing the gap between the second plug 40 and the feed section 130, further improving the accuracy and stability of powder addition.

[0065] In some embodiments, the powder adding structure also includes a first baffle 50 and a second baffle 60; the first baffle 50 is arranged on the plug 20 and is located above the first plug block 30; the second baffle 60 is arranged on the plug 20, and the second baffle 60 is located between the first baffle 50 and the first plug block 30; wherein the second plug block 40 is movably passed through the plug 20, and the second plug block 40 is located between the first baffle 50 and the second baffle 60.

[0066] The second plug 40 is limited in the axial direction by setting the first baffle 50 and the second baffle 60. In the feeding state, when the first plug 30 closes the discharge port 120, the second plug 40 abuts against the second baffle 60. In the discharging state, when the second plug 40 closes the feeding port 110, the second plug 40 abuts against the first baffle 50. The movement of the second plug 40 between the first baffle 50 and the second baffle 60 serves as a reminder when the plunger 20 is manually moved, so that the operator can know whether the second plug 40 closes the feeding port 110 at this time, which is beneficial to the stability and precision control of powder addition.

[0067] It should be noted that a through hole for the plug 20 to pass through is provided in the second plug block 40, and the through hole is coaxially arranged with the second plug block 40; in addition, the through hole matches the shape of the plug 20, and the diameter of the through hole is smaller than the diameter of the first baffle 50 and the second baffle 60, and the first baffle 50 and the second baffle 60 can block the gap between the through hole and the plug 20.

[0068] In some embodiments, the height of the feeding section 140 is L1, and the distance between the second baffle 60 and the first plug 30 is L2, wherein L1 and L2 satisfy the following relationship: L2>L1.

[0069] By setting L2 greater than L1, it is ensured that the second block 60 is located above the feeding port 110 in the feeding state, and the first block 30 is located below the discharging port 120 in the discharging state, so that the feeding and discharging actions are completed smoothly.

[0070] It should be noted that the height of the feeding section 140 is the length of the feeding section in the axial direction.

[0071] An embodiment of the utility model provides a stirring device, comprising the powder adding device described in any embodiment of the utility model.

[0072] It should be noted that the stirring device includes a tank body, a feed port is provided on the tank body, and a powder adding device is provided at the feed port, and powder is added into the stirring device through the powder adding device. In addition, the specific structure and working principle of the stirring device are both prior art, and this application will not repeat them.

[0073] It is understood that the various numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic.

[0074] The powder adding structure and stirring device provided in the embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A powder adding structure, characterized in that: include: A hopper, wherein the hopper has a feeding port and a discharging port, the feeding port and the discharging port are arranged at intervals in the axial direction, and the feeding port is located above the discharging port; A plug is movably disposed in the hopper; A first plug block is arranged on the plug column; a second plug, disposed on the plug column, the second plug and the first plug arranged in the axial direction with a spacing, and the second plug is located above the first plug; Wherein, in the feeding state, an external force drives the plug to move upward, so that the first plug closes the discharge port and the second plug opens the feeding port; In the discharging state, an external force drives the plug to move downward, so that the first plug opens the discharging port and the second plug closes the discharging port.

2. The powder adding structure according to claim 1, characterized in that: The hopper comprises: Feeding section; The feeding section is arranged on the feeding section, the feeding port and the discharging port are respectively located at two ends of the feeding section, and the feeding port is communicated with the feeding section.

3. The powder adding structure according to claim 2, characterized in that: The feed section is truncated cone-shaped, the inner diameter of the end of the feed section away from the feeding section is W1, and the inner diameter of the end of the feed section close to the feeding section is W2, wherein W1 and W2 satisfy the following relationship: W1>W2.

4. The powder adding structure according to claim 3, characterized in that: The feeding section is cylindrical, and the inner diameter of the feeding section is W2; Wherein, in the feeding state, the first plug block is partially located in the feeding section, and the second plug block is located above the feeding port; in the discharging state, the second plug block is partially located in the feeding section, and the first plug block is located below the discharging port.

5. The powder adding structure according to claim 4, characterized in that: The first plug is truncated cone-shaped, the diameter of the end of the first plug away from the plug is W3, and the diameter of the end of the first plug close to the plug is W4, wherein W2, W3, and W4 satisfy the following relationship: W3<W2<W4.

6. The powder adding structure according to claim 4, characterized in that: The second plug is truncated cone-shaped, the diameter of the second plug away from the first plug is W5, and the diameter of the second plug close to the first plug is W6, wherein W1, W2, W5, and W6 satisfy the following relationship: W6<W2<W5<W1.

7. The powder adding structure according to claim 6, characterized in that: The side wall of the second plug is parallel to the inner wall of the feed section.

8. The powder adding structure according to any one of claims 2 to 7, characterized in that: The powder adding structure also includes: A first baffle, disposed on the plug column and located above the first plug block; A second baffle, disposed on the plug column, the second baffle being located between the first baffle and the first plug block; The second plug is movably disposed on the plug column, and the second plug is located between the first baffle and the second baffle.

9. The powder adding structure according to claim 8, characterized in that: The height of the feeding section is L1, and the distance between the second baffle and the first plug is L2, wherein L1 and L2 satisfy the following relationship: L2>L1.

10. A stirring device, characterized in that: It comprises the powder adding structure as described in any one of claims 1 to 9.

Images