Silicon nitride powder homogenizing device

Abstract

The utility model is applicable to the field of powder production and preparation, and provides a silicon nitride powder homogenizing device which comprises a device body, a screening assembly and a uniform mixing assembly, the device body comprises a box body, a feeding port, a screening plate and a powder outlet, and the screening assembly comprises a screening box, a vibration motor and a spring. The uniform mixing assembly comprises a rotating motor, a rotating shaft and a uniform mixing unit, the box body is filled with silicon nitride powder through the arranged feeding opening, a vibration motor is started to be matched with a spring to conduct vibration and uniform mixing on the screening box, meanwhile, the silicon nitride powder is screened, large-particle solids are left in the screening box, and the silicon nitride powder with the more uniform particle size is obtained; the screened silicon nitride powder falls above the screening plate, the uniform mixing unit is driven by the rotating motor to rotate, the silicon nitride powder is further uniformly mixed, and the powder is promoted to be screened again through the screening plate to fall into the gathering groove through disturbance of the uniform mixing unit to the powder, gathered through the gathering groove and discharged from the powder outlet.

Description

TECHNICAL FIELD

[0001] The utility model belongs to powder production preparation field especially, it relates to a silicon nitride powder homogenizing device. BACKGROUND

[0002] Silicon nitride powder (Si3N4) is a material with high strength, high hardness, excellent thermal stability, corrosion resistance and low expansion coefficient, commonly used in high temperature, high strength and wear-resistant applications. Widely used in aerospace, metallurgy, machinery manufacturing, electronic components, bearings, thermal management materials and optical materials and other fields.

[0003] In the production process of silicon nitride powder, the control of particle size is usually difficult, which may lead to uneven particle size distribution, thereby affecting the quality stability of the final product. The powder homogenizing equipment currently used usually has the problem of poor homogenizing effect, which may increase the operation difficulty of the subsequent processing process, reduce the processing efficiency, and affect the performance of the final product. UTILITY MODEL CONTENTS

[0004] The purpose of the utility model embodiment is to provide a silicon nitride powder homogenizing device, aiming at solving the problems raised in the background art.

[0005] The utility model embodiment is implemented in this way, a silicon nitride powder homogenizing device, including device body, screening assembly installed in device body and mixing assembly arranged in device body, the device body includes box, feeding port, sieve plate and powder outlet, a plurality of supporting legs are fixedly installed at the bottom of the box, the feeding port is fixedly arranged at the top of the box, the inner side wall of the box is fixedly installed with a clamping seat, the sieve plate is fixedly installed in the box and located below the clamping seat, the powder outlet is installed in the middle of the bottom surface of the box, a convergence groove is fixedly arranged below the sieve plate on the inner bottom of the box, the screening assembly includes a screening box, a vibration motor and a spring, the spring is fixedly installed above the clamping seat, mounting plates are fixedly arranged on both sides of the screening box, the mounting plates are erected above the spring, the vibration motor is fixedly installed in the middle of the bottom surface of the two mounting plates, the mixing assembly includes a rotary motor, a rotating shaft and a mixing unit, the rotary motor is fixedly installed on the side surface of the box, the rotating shaft is transversely movably penetrated through the box and located above the sieve plate, one end of the rotating shaft is fixedly connected with the main shaft of the rotary motor, and the mixing unit is fixedly installed outside the rotating shaft.

[0006] As a further scheme of the utility model: the feeding port is provided as a funnel structure, and a partition plate is fixedly arranged at a position corresponding to the feeding port on the top inner side of the box.

[0007] As a further scheme of the utility model: the screening box is provided as a prism structure with a wide upper end and a narrow lower end, and the opening size of the upper end of the screening box is greater than the size of the partition plate.

[0008] As a further scheme of the utility model: the sieve plate includes two guide plates and a mesh plate, the two guide plates are fixedly installed on both sides of the mesh plate and form a V-shaped structure.

[0009] As a further scheme of the utility model: the two guide plates are inclined straight plates, one end of each of the two guide plates is fixedly installed on the inner side of the box body, and the mesh plate is an arc-shaped mesh plate.

[0010] As a further scheme of the utility model: the mixing unit includes mixing blades one and two, the mixing blades one and two are arranged in the same size and opposite directions in a spiral structure, and the outer diameter of the mixing unit is matched with the inner diameter of the mesh plate.

[0011] The utility model has the advantages that:

[0012] 1. The utility model embodiment provides a kind of silicon nitride powder homogenization device, by the filling silicon nitride powder of setting up feeding opening to box body, start vibration motor and cooperate spring to the oscillation mixing of screening box, while screening to silicon nitride powder, make large particle solid remain in screening box, obtain the silicon nitride powder of more uniform particle size, after screening silicon nitride powder falls above sieve plate, by rotating motor drives mixing unit rotation, to silicon nitride powder is further mixed, and by the disturbance of mixing unit to powder, promote powder to pass through sieve plate and fall into again and gather groove, by gathering groove and from powder outlet discharge.

[0013] 2. The utility model embodiment provides a kind of silicon nitride powder homogenization device, by the partition plate of setting up, play certain gathering effect, guarantee the silicon nitride powder of adding completely falls into screening box, prevent causing the waste of silicon nitride powder.

[0014] 3. The utility model embodiment provides a kind of silicon nitride powder homogenization device, by the guide plate of setting up, silicon nitride powder gathered to mesh plate in the preliminary disassembly of screening box, under the rotation of mixing unit, silicon nitride powder is mixed in mesh plate, and by the mesh hole on mesh plate to silicon nitride powder is secondary screened, further improve the uniformity of silicon nitride powder particle.

[0015] 4. The utility model embodiment provides a kind of silicon nitride powder homogenization device, by the mixing blade one and two of opposite spiral direction, can be by control rotation direction, silicon nitride powder is spirally conveyed to mesh plate both ends or middle part, repeatedly change the rotation direction of rotating motor, further improve the mixing effect of silicon nitride powder. DRAWINGS

[0016] Figure 1A three-dimensional structure diagram of a silicon nitride powder homogenizing device is provided in the embodiment of the present application.

[0017] Figure 2 A sectional view of a silicon nitride powder homogenizing device is provided in the embodiment of the present application.

[0018] Figure 3 For Figure 2 An enlarged schematic view at A in the middle;

[0019] Figure 4 A partial structure view of a mixing assembly of a silicon nitride powder homogenizing device is provided in the embodiment of the present application.

[0020] In the drawings: device body 1, box 11, support leg 12, charging port 13, partition 14, clamping seat 15, sieve plate 16, guide plate 161, mesh plate 162, powder outlet 17, convergence groove 18, screening assembly 2, screening box 21, mounting plate 211, vibration motor 22, spring 23, mixing assembly 3, rotating motor 31, rotating shaft 32, mixing unit 33, mixing blade one 331, mixing blade two 332. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0022] The specific implementation of the present application is described in detail below in combination with specific embodiments.

[0023] For example, Figures 1 to 4As shown in the figure, the device is provided with a silicon nitride powder homogenizing device, which comprises a device body 1, a screening assembly 2 installed in the device body 1 and a mixing assembly 3 arranged in the device body 1, wherein the device body 1 comprises a box body 11, a feeding port 13, a sieve plate 16 and a powder outlet 17, a plurality of supporting legs 12 are fixedly installed at the bottom of the box body 11, the feeding port 13 is fixedly arranged at the top of the box body 11, a clamping seat 15 is fixedly installed on the inner side wall of the box body 11, the sieve plate 16 is fixedly installed in the box body 11 and located below the clamping seat 15, the powder outlet 17 is installed at the middle of the bottom surface of the box body 11, a converging groove 18 is fixedly arranged below the sieve plate 16 at the bottom of the inner side of the box body 11, the screening assembly 2 comprises a screening box 21, a vibrating motor 22 and a spring 23, the spring 23 is fixedly installed above the clamping seat 15, mounting plates 211 are fixedly arranged on both sides of the screening box 21, the mounting plates 211 are arranged above the spring 23, the vibrating motor 22 is fixedly installed at the middle of the bottom surface of the two mounting plates 211, the mixing assembly 3 comprises a rotating motor 31, a rotating shaft 32 and a mixing unit 33, the rotating motor 31 is fixedly installed on the side surface of the box body 11, the rotating shaft 32 is transversely movably penetrated through the box body 11 and located above the sieve plate 16, one end of the rotating shaft 32 is fixedly connected with the main shaft of the rotating motor 31, and the mixing unit 33 is fixedly installed outside the rotating shaft 32.

[0024] In an embodiment of the utility model, through setting up the feeding port 13, the silicon nitride powder is filled into the box body 11, the vibrating motor 22 is started to cooperate with the spring 23 to shake and mix the screening box 21, and the silicon nitride powder is screened at the same time, so that the large particle solid is left in the screening box 21, the silicon nitride powder with more uniform particle size is obtained, the screened silicon nitride powder falls above the sieve plate 16, the mixing unit 33 is rotated by the rotating motor 31, the silicon nitride powder is further mixed, the disturbance of the mixing unit 33 to the powder promotes the powder to pass through the sieve plate 16 and fall into the converging groove 18 again, and the powder is discharged from the powder outlet 17 through the converging groove 18.

[0025] As shown in the figure, Figure 1 and Figure 2 As another embodiment of the utility model, the feeding port 13 is arranged in a funnel structure, and a partition plate 14 is fixedly arranged at the position corresponding to the feeding port 13 at the top of the inner side of the box body 11.

[0026] Specifically, the screening box 21 is arranged in a prismatic structure with the upper part being wide and the lower part being narrow, and the opening size of the upper end of the screening box 21 is greater than the size of the partition plate 14.

[0027] In one embodiment of the utility model, through setting up the baffle 14, a certain convergence effect is achieved, the added silicon nitride powder is guaranteed to fall into the screening box 21 completely, and waste of the silicon nitride powder is prevented.

[0028] As Figure 2 Indicated, as another embodiment of the utility model, the sieve plate 16 includes two guide plates 161 and a mesh plate 162, two guide plates 161 are fixedly installed on both sides of the mesh plate 162 and form a "V" shaped structure.

[0029] Specifically, two guide plates 161 are arranged as inclined straight plates, and one end of two guide plates 161 is fixedly installed on the inner side of the box body 11, and the mesh plate 162 is arranged as an arc-shaped mesh plate.

[0030] In one embodiment of the utility model, through the guide plate 161, the silicon nitride powder falling off from the screening box 21 is gathered into the mesh plate 162, under the rotation of the mixing unit 33, the silicon nitride powder is mixed in the mesh plate 162, and the mesh holes on the mesh plate 162 are used for secondary screening of the silicon nitride powder, and the uniformity of the silicon nitride powder particles is further improved.

[0031] As Figure 2 And Figure 4 Indicated, as another embodiment of the utility model, the mixing unit 33 includes mixing blade one 331 and mixing blade two 332, the mixing blade one 331 and the mixing blade two 332 are arranged as spiral structures with the same size and opposite directions, and the outer diameter of the mixing unit 33 is matched with the inner diameter of the mesh plate 162.

[0032] In one embodiment of the utility model, through the mixing blade one 331 and the mixing blade two 332 with opposite spiral directions, the silicon nitride powder can be spirally conveyed to both ends or the middle of the mesh plate 162 by controlling the rotation direction, the rotation direction of the rotating motor 31 is repeatedly changed, and the mixing effect of the silicon nitride powder is further improved.

[0033] For those skilled in the art, it is obvious that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0034] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0036] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] In addition, it should be understood that although the present application is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A silicon nitride powder homogenizing device, comprising a device body (1), a screening assembly (2) installed in the device body (1), and a mixing assembly (3) arranged in the device body (1), characterized in that, The device body (1) includes a box (11), a feeding port (13), a sieve plate (16) and a powder outlet (17), a plurality of supporting legs (12) are fixedly installed at the bottom of the box (11), the feeding port (13) is fixedly arranged at the top of the box (11), a clamping seat (15) is fixedly installed on the inner side wall of the box (11), the sieve plate (16) is fixedly installed in the box (11) and below the clamping seat (15), the powder outlet (17) is installed at the middle of the bottom surface of the box (11), a convergence groove (18) is fixedly arranged below the sieve plate (16) on the inner bottom of the box (11), the screening assembly (2) includes a screening box (21), a vibration motor (22) and a spring (23), the spring (23) is fixedly installed above the clamping seat (15), the screening box (21) is fixedly provided with mounting plates (211) on both sides, the mounting plates (211) are erected above the spring (23), the vibration motor (22) is fixedly installed at the middle of the bottom surface of the two mounting plates (211), the mixing assembly (3) includes a rotating motor (31), a rotating shaft (32) and a mixing unit (33), the rotating motor (31) is fixedly installed on the side of the box (11), the rotating shaft (32) is transversely movably penetrated through the box (11) and located above the sieve plate (16), one end of the rotating shaft (32) is fixedly connected with the main shaft of the rotating motor (31), and the mixing unit (33) is fixedly installed outside the rotating shaft (32).

2. The silicon nitride powder homogenizing device according to claim 1, wherein The feeding port (13) is provided in the form of a funnel structure, and a partition plate (14) is fixedly arranged at a position corresponding to the feeding port (13) on the inner top of the box (11).

3. The silicon nitride powder homogenizing device according to claim 2, wherein The screening box (21) is provided in the form of a prism structure with a wide upper end and a narrow lower end, and the opening size of the upper end of the screening box (21) is greater than the size of the partition plate (14).

4. The silicon nitride powder homogenizing device of claim 1, wherein, The sieve plate (16) includes two guide plates (161) and a mesh plate (162), and the two guide plates (161) are fixedly installed on both sides of the mesh plate (162) and form a "V" shape.

5. The silicon nitride powder homogenizing apparatus according to claim 4, wherein The two guide plates (161) are provided in the form of inclined straight plates, and one end of each of the two guide plates (161) is fixedly installed on the inner side of the box (11), and the mesh plate (162) is provided in the form of an arc-shaped mesh plate.

6. The silicon nitride powder homogenizing device according to claim 5, wherein The mixing unit (33) includes mixing blades one (331) and two (332), the mixing blades one (331) and two (332) are provided in the form of spiral structures with the same size and opposite directions, and the outer diameter of the mixing unit (33) is matched with the inner diameter of the mesh plate (162).

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