Exhaust mechanism and powder mixer using same

Abstract

The utility model discloses an exhaust mechanism and a powder mixing machine using the exhaust mechanism, which comprises a hollow shaft provided with a hollow circulation cavity and at least one exhaust hole arranged on the side wall of one end part of the hollow shaft and communicated with the circulation cavity; the driver is connected with the end, provided with the exhaust hole, of the hollow shaft, and the driver does not shield the exhaust hole; the at least one filter bag assembly is arranged on the part, far away from the exhaust hole, of the hollow shaft; any filter bag assembly comprises a connecting pipe connected with the hollow shaft, a supporting frame connected with the connecting pipe, and a filter bag embedded in the inner side of the supporting frame; the connecting pipe is provided with a cavity communicated with the circulating cavity and an opening which is communicated with the cavity and is connected with the supporting frame; a plurality of hollowed-out areas suitable for powder to pass through are formed in the side wall of the supporting frame. According to the utility model, the filter cloth and the exhaust hole in the exhaust mechanism can be prevented from being blocked in the powder mixing process.

Description

Technical Field

[0001] The utility model relates to the technical field of powder processing equipment, in particular to an exhaust mechanism and a powder mixer using the exhaust mechanism. Background Art

[0002] A mixer is a mechanical device that uses mechanical force and gravity to evenly mix two or more materials. During the mixing process, it can also increase the contact surface area of ​​the materials to promote chemical reactions and accelerate physical changes.

[0003] In the production of solid electrolyte materials, mixing processes are often used. Since continuous shaft sealing air needs to be introduced and a large amount of gas is generated during the high-speed rotation of the stirring blades, in the existing technology, in order to discharge the large amount of gas generated inside the mixer, holes are opened in the upper cover of the mixer, and different grades of filter cloths are selected according to the particle size of the material. The filter cloths are supported from the inside by metal devices, thereby achieving the effect of discharging the gas inside the mixer while preventing the raw materials from leaking out of the mixer.

[0004] In the case of high speed and long mixing, the material will gradually fly to the inner wall of the filter cloth and be affected by the increasing air pressure. The material will continue to accumulate and clog the inner wall of the filter cloth, causing the exhaust capacity of the filter cloth to become worse and worse with the extension of mixing time. When the pressure is greater than the pressure that the filter cloth can withstand, the filter cloth will burst and the material will leak to the outside.

[0005] Based on the above situation, the announcement number CN218741711U discloses a mixer exhaust guide device, which, through the cooperation of the exhaust pipe and the filter cloth cylinder, will not cause air pressure stagnation in the mixer chamber and the filter cloth cylinder, and prevent random materials from flying into the filter cloth cylinder and causing the filter cloth cylinder to be blocked. However, actual research has found that the exhaust guide device in the disclosed technology has multiple air inlet holes on the part where the exhaust pipe extends into the mixer, and as the materials in the mixer rotate at high speed and are thrown upward, there is a risk of the exhaust holes being blocked, or the filter cloth cylinder being blocked.

[0006] Based on the above situation, for the exhaust device used in the mixer, it is necessary to further consider the problem of avoiding the material blocking the exhaust hole or the filter cloth cylinder. Utility Model Content

[0007] The first purpose of the utility model is to provide an exhaust mechanism to solve the technical problem of preventing the filter cloth and the exhaust holes in the exhaust mechanism from being blocked.

[0008] The second purpose of the utility model is to provide a powder mixer to solve the technical problem of preventing the filter cloth and the exhaust holes in the exhaust mechanism from being blocked during the powder mixing process.

[0009] The exhaust mechanism of the utility model is realized as follows:

[0010] An exhaust mechanism, comprising:

[0011] A hollow shaft having a hollow flow cavity and at least one exhaust hole disposed on a side wall of one end of the hollow shaft and communicating with the flow cavity;

[0012] A driver connected to the end of the hollow shaft provided with the exhaust hole, and the driver does not block the exhaust hole; and

[0013] At least one filter bag assembly is arranged on a portion of the hollow shaft away from the exhaust hole; any of the filter bag assemblies includes a connecting pipe connected to the hollow shaft, a support frame connected to the connecting pipe, and a filter bag mounted on the inner side of the support frame; wherein the connecting pipe has a cavity that passes through the flow cavity and an opening that communicates with the cavity and is connected to the support frame; a plurality of hollow areas suitable for powder to pass through are formed on the side wall of the support frame.

[0014] In an optional embodiment of the present invention, the support frame and the filter bag are both cylindrical structures.

[0015] In an optional embodiment of the utility model, the support frame includes a circular cover plate connected to the connecting tube, a plurality of support tubes connected to the circular cover plate and spaced apart in the circumferential direction, and a bottom bracket connected to one side of the plurality of support tubes facing away from the circular cover plate; wherein

[0016] The bottom support is provided with a through hole suitable for inserting the filter bag.

[0017] In an optional embodiment of the utility model, the filter bag comprises a cylindrical body and annular flanges respectively arranged at the edges of the two axial ends of the cylindrical body and bent toward the axis of the cylindrical body; wherein

[0018] An annular flange located at one axial side end of the cylindrical body is suitable for abutting against the cover plate; and

[0019] The base bracket can also be detachably connected to a bottom plate; and when the bottom plate is tightly matched with the base bracket, the annular flange located at the other axial side end of the cylindrical body is suitable for abutting against the bottom plate.

[0020] In an optional embodiment of the present invention, an inner bracket suitable for propping up the filter bag is further provided in the filter bag.

[0021] In an optional embodiment of the present invention, the inner support includes a plurality of struts spaced apart in a circumferential direction and at least one annular support ring connected to the plurality of struts.

[0022] In an optional embodiment of the present utility model, the driver adopts a micro drive motor.

[0023] The powder mixer of the utility model is realized in this way:

[0024] A powder mixer, comprising: a mixing drum for mixing powder and an exhaust mechanism arranged at the top of the mixing drum; wherein

[0025] The driver is fixed on the mixing cylinder via a support frame; and

[0026] The top wall of the mixing cylinder has a connecting hole for connecting with the hollow shaft.

[0027] In an optional embodiment of the present utility model, a sealing fitting assembly is provided between the connecting hole and the hollow shaft.

[0028] In an optional embodiment of the utility model, the sealing matching assembly includes an annular connector fixed in the connecting hole, an annular recessed groove recessed at one axial side end of the annular connector, a sealing ring suitable for being embedded in the annular recessed groove, and a cover plate matched with the annular connector and suitable for pressing the sealing ring; wherein

[0029] The cover plate is provided with a bearing member for cooperating with the hollow shaft; and

[0030] The cover plate is connected to the annular connecting piece through a fastener.

[0031] By adopting the above technical solution, the utility model has the following beneficial effects: the exhaust mechanism of the utility model and the powder mixer using the exhaust mechanism drive the hollow shaft to rotate through the driver, and the dust trapped on the surface of the filter bag is separated from the filter bag through the centrifugal force, and the gas in the mixing cylinder is discharged to the outside of the mixing cylinder along the flow cavity and the exhaust hole of the filter bag and the hollow shaft. Since the powder will not contact the exhaust hole, there is no problem of clogging the exhaust hole, and the phenomenon of powder clogging the filter bag can be avoided by the rotation of the filter bag with the hollow shaft, so the utility model can avoid the clogging of the filter cloth and the exhaust hole in the exhaust mechanism during the powder mixing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic structural diagram of the exhaust mechanism of the utility model from a first perspective;

[0033] Figure 2 It is a schematic structural diagram of the exhaust mechanism of the utility model from a second viewing angle;

[0034] Figure 3 This is a schematic diagram of the partial explosion structure of the exhaust mechanism of the utility model. Figure 1 ;

[0035] Figure 4This is a schematic diagram of the partial explosion structure of the exhaust mechanism of the utility model. Figure 2 ;

[0036] Figure 5 This is a schematic diagram of the partial explosion structure of the exhaust mechanism of the utility model. Figure 3 .

[0037] In the figure: hollow shaft 1, exhaust hole 11, connecting pipe 21, supporting frame 3, circular cover plate 31, supporting pipe 32, bottom support 33, hollow area 34, filter bag 4, cylindrical body 41, annular flange 42, bottom plate 5, pillar 61, annular support ring 62, annular connecting member 81, annular sink 82, sealing ring 83, cover plate 84, bearing member 85, connecting ear 86, pressure plate 87, driver 9. DETAILED DESCRIPTION

[0038] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0039] Embodiment 1:

[0040] See also Figures 1 to 5 As shown, this embodiment provides an exhaust mechanism, including: a hollow shaft 1, a driver 9 connected to the hollow shaft 1, and at least one filter bag assembly.

[0041] Specifically, first, the hollow shaft 1 has a hollow flow cavity and at least one exhaust hole 11 disposed on the side wall of one end of the hollow shaft 1 and communicating with the flow cavity. The exhaust hole 11 in this embodiment can be one or more, and no matter how many exhaust holes 11 there are, as long as it can ensure that the exhaust mechanism can be located outside the powder mixer when applied in the specific powder mixer, the use requirements of this embodiment are met. The attached drawings of this embodiment only take the case of providing one exhaust hole 11 as an example.

[0042] On the basis of the above structure, it should be noted that the driver 9 is connected to the hollow shaft 1, and the driver 9 is arranged close to the exhaust hole 11, so that when the exhaust mechanism is applied in a specific powder mixer, the driver 9 can be located outside the powder mixer, but the overall exhaust hole 11 will not be blocked by the driver 9. The driver 9 here can be selected to adopt, for example but not limited to, a micro motor, so that the driver 9 can drive the hollow shaft 1 to rotate.

[0043] Next, let's talk about the filter bag assembly. In conjunction with the attached figure, an optional situation is given in which three filter bag assemblies are arranged on the hollow shaft 1, and one of the three filter bag assemblies is located at the end of the hollow shaft 1 facing away from the driver 9, and the other two filter bag assemblies are located on the side wall of the hollow shaft 1. Of course, more filter bag assemblies can be arranged here, which is specifically set according to the use requirements of the powder mixer, and this embodiment does not make an absolute limitation.

[0044] It should be noted here that the axial end of the hollow shaft 1 away from the driver 9 is a closed end, that is, the gas can only enter the flow cavity of the hollow shaft 1 through the filter bag 4 .

[0045] Next, the detailed structure of the filter bag assembly is described.

[0046] Generally speaking, the filter bag assembly includes a connection pipe 21 connected to the hollow shaft 1, a support frame 3 connected to the connection pipe 21, and a filter bag 4 mounted inside the support frame 3; wherein the connection pipe 21 has a cavity that penetrates the flow cavity and an opening that communicates with the cavity and is connected to the support frame 3; and a plurality of hollow areas 34 suitable for powder to pass through are formed on the side wall of the support frame 3. Under this structure, for the gas entering the filter bag 4, it passes through the connection pipe 21 and the flow cavity of the hollow shaft 1 in turn to be discharged from the exhaust hole 11 to the outside of the hollow shaft 1.

[0047] Based on the above situation, an optional implementation mode is further illustrated with reference to the accompanying drawings:

[0048] In terms of shape, the support frame 3 and the filter bag 4 are both cylindrical structures.

[0049] Structurally, the support frame 3 includes a circular cover plate 31 connected to the connection tube 21, a plurality of support tubes 32 connected to the circular cover plate 31 and spaced in the circumferential direction, and a bottom bracket 33 connected to the side of the plurality of support tubes 32 facing away from the circular cover plate 31; wherein the bottom bracket 33 is provided with a through hole suitable for inserting the filter bag 4. The center cover plate here can be optionally welded to the connection tube 21. A plurality of screw locking holes are spaced in the circumferential direction on the bottom bracket 33.

[0050] Furthermore, the filter bag 4 includes a cylindrical body 41 and an annular flange 42 respectively disposed at the edges of the two axial ends of the cylindrical body 41 and bent toward the axis of the cylindrical body 41; wherein the annular flange 42 located at one axial side end of the cylindrical body 41 is suitable for abutting against the cover plate; and the bottom bracket 33 is also detachably equipped with a bottom plate 5; and when the bottom plate 5 is tightly matched with the bottom bracket 33, the annular flange 42 located at the other axial side end of the cylindrical body is suitable for abutting against the bottom plate 5. Here, the bottom plate 5 is suitable for being tightly matched with the screw locking hole on the bottom bracket 33 by tightening screws.

[0051] In this embodiment, the support frame 3 is designed so that the filter bag 4 built in the support frame 3 can rotate synchronously with the hollow shaft 1, thereby ensuring the stability of the filter bag 4 during the rotation process with the support frame 3 and the hollow shaft 1.

[0052] In addition, the present embodiment also has the following designs:

[0053] The filter bag 4 is also provided with an inner support suitable for supporting the filter bag 4. Here, an optional situation is given in conjunction with the accompanying drawings: the inner support includes a plurality of pillars 61 spaced apart in the circumferential direction and at least one annular support ring 62 connected to the plurality of pillars 61. Under this structure, under the action of the inner support, the filter bag 4 as a whole can be in a cylindrical supported state, which, on the one hand, facilitates the gas to fully pass through the filter bag 4 into the connecting pipe 21 and the hollow shaft 1, and on the other hand, ensures that when the driver 9 drives the hollow shaft 1 to rotate, the dust trapped on the surface of the filter bag 4 is completely separated from the filter bag 4 by centrifugal force.

[0054] In summary, for the exhaust mechanism of this embodiment, since the powder will not contact the exhaust hole 11, there is no problem of clogging the exhaust hole 11. The rotation of the filter bag 4 along with the hollow shaft 1 can prevent the powder from clogging the filter bag 4. Therefore, the utility model can prevent the filter cloth and the exhaust hole 11 in the exhaust mechanism from being blocked during the powder mixing process.

[0055] Embodiment 2:

[0056] A powder mixer in Example 1 includes: a mixing drum for mixing powder and an exhaust mechanism of Example 1 arranged on the top of the mixing drum; wherein a driver 9 is fixed to the mixing drum through a support frame; and a connecting hole on the top wall of the mixing drum for matching the hollow shaft 1.

[0057] On the basis of the above structure, it is also necessary to explain that a sealing matching assembly is provided between the connecting hole and the hollow shaft 1. Here, an optional implementation is given as an example in conjunction with the accompanying drawings, and the sealing matching assembly includes an annular connecting member 81 fixed in the connecting hole, an annular recessed groove 82 recessed at one axial side end of the annular connecting member 81, a sealing ring 83 suitable for being embedded in the annular recessed groove 82, and a cover plate 84 matched with the annular connecting member 81 and suitable for pressing the sealing ring 83; wherein the cover plate 84 is provided with a bearing member 85 for matching with the hollow shaft 1; and the cover plate 84 is connected to the annular connecting member 81 through a fastener.

[0058] Furthermore, in order to ensure the tight fit between the cover plate and the annular connector 81, a pair of connecting ears 86 are provided on the annular connector 81, and a pressure plate 87 is provided on the side of the cover plate 84 facing away from the sealing ring. The pressure plate 87 is suitable for being fastened to the connecting ears by, for example, locking screws, that is, the cover plate 84 is pressed between the pressure plate 87 and the annular connector 81 by fastening the pressure plate 87 and the annular connector 81.

[0059] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0060] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 invention.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

Claims

1. An exhaust mechanism, characterized in that: include: A hollow shaft having a hollow flow cavity and at least one exhaust hole disposed on a side wall of one end of the hollow shaft and communicating with the flow cavity; A driver connected to the end of the hollow shaft provided with an exhaust hole, and the driver does not block the exhaust hole; as well as At least one filter bag assembly is arranged on a portion of the hollow shaft away from the exhaust hole; any of the filter bag assemblies includes a connecting pipe connected to the hollow shaft, a support frame connected to the connecting pipe, and a filter bag mounted on the inner side of the support frame; wherein the connecting pipe has a cavity that passes through the flow cavity and an opening that communicates with the cavity and is connected to the support frame; a plurality of hollow areas suitable for powder to pass through are formed on the side wall of the support frame.

2. The exhaust mechanism according to claim 1, characterized in that: The support frame and the filter bag are both cylindrical structures.

3. The exhaust mechanism according to claim 2, characterized in that: The support frame includes a circular cover plate connected to the connecting tube, a plurality of support tubes connected to the circular cover plate and spaced apart in the circumferential direction, and a bottom bracket connected to the side of the plurality of support tubes facing away from the circular cover plate; wherein The bottom support is provided with a through hole suitable for inserting the filter bag.

4. The exhaust mechanism according to claim 3, characterized in that: The filter bag comprises a cylindrical body and annular flanges respectively arranged at the edges of the two axial ends of the cylindrical body and bent toward the axis of the cylindrical body; An annular flange located at one axial side end of the cylindrical body is suitable for abutting against the cover plate; and The base bracket can also be detachably connected to a bottom plate; and when the bottom plate is tightly matched with the base bracket, the annular flange located at the other axial side end of the cylindrical body is suitable for abutting against the bottom plate.

5. The exhaust mechanism according to any one of claims 1 to 4, characterized in that: An inner bracket suitable for propping up the filter bag is also arranged in the filter bag.

6. The exhaust mechanism according to claim 5, characterized in that: The inner support comprises a plurality of pillars spaced apart in the circumferential direction and at least one annular support ring connected to the plurality of pillars.

7. The exhaust mechanism according to claim 1, characterized in that: The driver adopts a micro drive motor.

8. A powder mixer, characterized in that: include: A mixing cylinder for mixing powders and an exhaust mechanism as claimed in any one of claims 1 to 7 arranged on the top of the mixing cylinder; in The driver is fixed on the mixing cylinder via a support frame; and The top wall of the mixing cylinder has a connecting hole for connecting with the hollow shaft.

9. The powder mixer according to claim 8, characterized in that: A sealing matching component is provided between the connecting hole and the hollow shaft.

10. The powder mixer according to claim 9, characterized in that: The sealing matching assembly comprises an annular connecting member fixed in the connecting hole, an annular recessed groove recessed at one axial side end of the annular connecting member, a sealing ring suitable for being embedded in the annular recessed groove, and a cover plate matched with the annular connecting member and suitable for pressing the sealing ring; wherein The cover plate is provided with a bearing member for cooperating with the hollow shaft; and The cover plate is connected to the annular connecting piece through a fastener.

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