Dispersing device for surface modification of silica powder

Abstract

The utility model discloses a dispersing device for surface modification of silica powder. The dispersing device comprises a tank body (1), a bottom pipe (3), a conical material distributing disc (5), a hanging rod (6), a spraying assembly, a driving main shaft (9), a transmission assembly, a stirring shaft (12), a stirring paddle (13), a spraying pipe (14) and an auger blade (21). A transmission assembly is arranged in the conical material distribution disc and comprises a sealing disc, a gear ring, a fluted disc, a gear and a transmission groove. According to the device disclosed by the utility model, through the arrangement of the conical distribution disc, entering silica powder can be dispersed all around, and a modifier can be conveniently and uniformly sprayed and mixed into the silica powder by utilizing the spray pipe and the spray heads, so that subsequent mixing and dispersion are facilitated. According to the device disclosed by the utility model, by arranging a planetary gear structure consisting of the driving main shaft and the fluted disc of the transmission assembly, the matched gear and the gear ring, the rotation and revolution driving of the stirring shaft can be realized, and the stirring effect on silica powder is improved, so that the dispersing efficiency of a modifier is accelerated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of dispersing devices for silicon powder surface modification, belong to material modification dispersing equipment technical field. BACKGROUND

[0002] In the field of material science, silicon powder is widely used in electronic packaging, rubber, plastic, paint and other industries due to its high hardness, low expansion coefficient, high insulation and other excellent characteristics. To improve the compatibility of silicon powder with other materials and enhance its performance in composite materials, surface modification of silicon powder is a crucial step, and dispersing device is a key equipment for efficient modification.

[0003] The feeding structure of traditional dispersing device is relatively simple. When the modifier enters the device, it is easy to accumulate into a group, causing the modifier to be unable to contact with the silicon powder uniformly. Moreover, due to the single stirring structure, a lot of time is needed for subsequent dispersion and mixing process, resulting in low processing efficiency. SUMMARY

[0004] The utility model aims at solving the problems of traditional dispersing device, such as simple feeding structure, easy accumulation of modifier into a group when entering the device, and inability of modifier to contact with silicon powder uniformly, and proposes a dispersing device for silicon powder surface modification.

[0005] The technical solution of the utility model is as follows: a dispersing device for silicon powder surface modification, comprising a tank body, a feeding pipe is provided at the top of the tank body, a bottom pipe is provided at the bottom, and a discharge pipe is penetrated through the side wall of the bottom pipe; the device further comprises a conical distribution disc, a spraying assembly, a sealing disc, a driving main shaft, a stirrer and an auger blade; a suspension rod is connected between the conical distribution disc and the top wall of the tank body, and a spraying assembly is provided above the conical distribution disc for uniform spraying of modifier.

[0006] A transmission assembly is provided in the conical distribution disc; the transmission assembly comprises a sealing disc, a gear ring, a gear disc, a gear and a transmission groove; the gear ring is an inner gear ring, the outer circle of the gear ring is fixed on the inner circular wall of the conical distribution disc, the gear disc is concentric with the gear ring and is at the same horizontal plane, and the space between the gear disc and the gear ring is the transmission groove; in the transmission groove, the gear is engaged with the gear ring and the gear disc, respectively, and the two gears are respectively located on the two sides of the same diameter direction of the gear disc surface and the gear ring surface; one end of the driving main shaft is fixedly connected to the center of the gear disc perpendicular to the gear disc, and the other end of the driving main shaft penetrates the center of the sealing disc and is coaxially connected with the motor main shaft in the bottom pipe; the centers of the two gears are both installed with an agitating shaft perpendicular to the horizontal plane, and the other ends of the two agitating shafts penetrate the sealing disc, and the agitating shafts penetrating out of the sealing disc are installed with stirring paddles.

[0007] The spraying assembly includes a spray pipe and a nozzle. The spray pipe is annular and installed on the top of the tank via a pipe clamp. The spray pipe has a connecting pipe that runs through the top of the tank. The nozzle is located at the bottom of the spray pipe and is inclined towards the conical distribution plate. Silicon powder is added into the tank through the feed pipe. The silicon powder slides outward along the conical distribution plate. At the same time, a certain proportion of modifier is introduced into the connecting pipe, so that the modifier enters the spray pipe and is sprayed onto the dispersed silicon powder through the nozzle, so that the modifier mixes with the silicon powder, which facilitates subsequent mixing and dispersion.

[0008] The diameter of the upper surface of the conical distributing plate is larger than the diameter of the lower surface, and the longitudinal section of the upper surface is conical. The silicon micro powder is added into the tank through the feed pipe, and the silicon micro powder will disperse and slide down along the upper surface of the conical distributing plate.

[0009] The bottom end of the drive shaft is connected to an auger blade that moves within the bottom tube. After the stirring and dispersion are completed, the drive shaft is rotated in the opposite direction to transport the silicon micro powder using the auger blade.

[0010] The motor is a vertical motor, installed on the bottom wall of the base tube.

[0011] The tank has an observation window on its side wall to facilitate observation of the dispersion inside the tube.

[0012] The outlet of the discharge pipe is inclined downwards.

[0013] The tank is equipped with load-bearing legs at the bottom for easy material unloading and maintenance.

[0014] The beneficial effects of this invention are as follows: The device, by setting a conical distributing disc, can disperse the incoming silicon powder in all directions; the spray pipe and nozzle facilitate the uniform spraying and mixing of the modifier into the silicon powder, thus facilitating subsequent mixing and dispersion; the device, by setting a drive shaft and gear disc in the transmission assembly, combined with a planetary gear structure composed of gears and gear rings, can realize the rotation and revolution drive of the stirring shaft, improving the stirring effect on the silicon powder and thus accelerating the dispersion efficiency of the modifier; the auger blades set on the drive shaft facilitate the discharge of silicon powder by reversing the drive shaft, avoiding discharge blockage. Attached Figure Description

[0015] Figure 1 This is a structural diagram of a dispersion device for surface modification of silicon micropowder according to the present invention.

[0016] Figure 2 This is a partial cross-section of a dispersion device for surface modification of silicon micropowder according to the present invention. Figure 1 ;

[0017] Figure 3 This is a partial cross-section of a dispersion device for surface modification of silicon micropowder according to the present invention.Figure 2 ;

[0018] Figure 4 This is a structural diagram of the spray pipe of a dispersion device for surface modification of silicon micropowder according to this utility model;

[0019] Figure 5 This is a schematic diagram of the transmission component structure of a dispersion device for surface modification of silicon micropowder according to this utility model;

[0020] Wherein, 1 is the tank body; 2 is the feed pipe; 3 is the bottom pipe; 4 is the discharge pipe; 5 is the conical distribution plate; 6 is the boom; 7 is the spraying assembly; 8 is the transmission groove; 9 is the drive shaft; 10 is the motor; 11 is the transmission assembly; 12 is the stirring shaft; 13 is the stirring paddle; 14 is the spray pipe; 15 is the nozzle; 16 is the connecting pipe; 17 is the sealing plate; 18 is the gear ring; 19 is the gear disc; 20 is the gear; 21 is the auger blade; and 22 is the observation window. Detailed Implementation

[0021] The specific implementation of this utility model is shown in the figure.

[0022] Figure 1 The diagram shown is an external structural diagram of a dispersion device for surface modification of silicon micropowder in this embodiment. The top of the tank 1 of this embodiment is provided with a feed pipe 2, and the bottom of the tank 1 is provided with a bottom pipe 3. A discharge pipe 4 with an inclined downward outlet is passed through the side wall of the bottom pipe 3 to facilitate the entry and exit of materials. An observation window 22 is provided on the side wall of the tank 1 to facilitate the observation of the dispersion in the pipe.

[0023] Figure 2 and Figure 4 As shown, a conical distribution plate 5 is installed inside the tank body 1. A hanging rod 6 connects the conical distribution plate 5 to the top wall of the tank body 1. A spraying assembly 7 is provided on the top of the tank body 1 for uniformly spraying the modifier. The spraying assembly 7 includes a spray pipe 14 and a nozzle 15. The spray pipe 14 is annular and is installed on the top of the tank body 1 by a pipe clamp. A connecting pipe 16 is provided on the spray pipe 14, which runs through the tank body 1. The nozzle 15 is located at the bottom of the spray pipe 14 and is inclined close to the conical distribution plate 5. Silicon micropowder is added into the tank body 1 through the feed pipe 2. The silicon micropowder is dispersed and slides down along the conical distribution plate 5. At the same time, a certain proportion of modifier is introduced into the connecting pipe 16, so that the modifier enters the spray pipe 14 and is sprayed onto the dispersed silicon micropowder through the nozzle 15, so that the modifier and silicon micropowder are mixed, which facilitates subsequent mixing and dispersion.

[0024] Figure 5 and Figure 3As shown, the conical distributing disc 5 of this embodiment is equipped with a transmission assembly 11; the transmission assembly 11 includes a sealing disc 17, a gear ring 18, a gear disc 19, a gear 20, and a transmission groove 8; the gear ring 18 is an inner gear ring, and the outer circle of the gear ring 18 is fixed on the inner circular wall of the conical distributing disc 5; the gear disc 19 is concentric with the gear ring 18 and is on the same horizontal plane; the space between the gear disc 19 and the gear ring 18 is the transmission groove 8; in the transmission groove 8, the gear 20 is respectively connected to the gear ring 18 and the gear disc. 19 meshes, with the two gears located on opposite sides of the same diameter direction on the gear disc surface and gear ring surface, respectively; one end of the drive shaft 9 is perpendicular to the gear disc 19 and fixedly connected to the center of the gear disc, and the other end of the drive shaft 9 passes through the center of the sealing disc 17 and extends into the bottom tube 3 and is coaxially connected to the main shaft of the motor 10; both gears have a stirring shaft 12 installed at their center, which is perpendicular to the horizontal plane, and the other ends of the two stirring shafts 12 pass through the sealing disc 17, with a stirring paddle 13 installed on the stirring shafts 12 that pass through the sealing disc 17.

[0025] After the feeding is completed, the device in this embodiment starts the motor 10. The motor 10 drives the drive shaft 9 to rotate, the drive shaft 9 drives the gear disk 19 to rotate, and the gear disk 19 drives the gear 20 to rotate. At the same time, by utilizing the meshing of the gear ring 18 and the gear 20, the gear 20 rotates around the gear disk 19 during the rotation process. This causes the stirring shaft 12 to rotate while driving the drive shaft 9 to rotate, thereby improving the stirring efficiency of the stirring paddle 13 on the silicon micro powder and facilitating faster discharge speed.

[0026] like Figure 2 As shown, the bottom end of the drive shaft 9 of the device in this embodiment is connected to an auger blade 21 that moves inside the bottom tube 3. After the stirring and dispersion are completed, the drive shaft 9 is rotated in the opposite direction to transport the silicon micro powder using the auger blade 21, thereby avoiding the situation of material blockage at the outlet.

[0027] The device in this embodiment, by setting a conical distributing plate 5, can disperse the incoming silicon micro powder in all directions. The spray pipe 14 and nozzle 15 facilitate the uniform spraying and mixing of the modifier into the silicon micro powder, which is convenient for subsequent mixing and dispersion. The device in this embodiment, by setting a drive shaft 9 and a gear disk 19 of the transmission component 11, and a planetary gear structure composed of gear 20 and gear ring 18, can realize the rotation and revolution drive of the stirring shaft 12, improve the stirring effect on the silicon micro powder, and thus accelerate the dispersion efficiency of the modifier.

Claims

1. A dispersion device for surface modification of silicon micropowder, comprising a tank, wherein a feed pipe is provided at the top of the tank and a bottom pipe is provided at the bottom, and a discharge pipe extends through the side wall of the bottom pipe; characterized in that, The device also includes a conical distributing plate, a spraying assembly, a sealing plate, a drive shaft, a stirrer, and auger blades; a hanging rod is connected between the conical distributing plate and the top wall of the tank, and a spraying assembly is provided above the conical distributing plate for uniformly spraying the modifier; A transmission assembly is provided inside the conical distributing plate; the transmission assembly includes a sealing plate, a gear ring, a gear disk, gears, and a transmission groove; the gear ring is an inner gear ring, the outer circle of which is fixed to the inner wall of the conical distributing plate; the gear disk and the gear ring are concentric and on the same horizontal plane; the space between the gear disk and the gear ring is the transmission groove; in the transmission groove, the gears mesh with the gear ring and the gear disk respectively, and the two gears are located on opposite sides of the gear disk surface and the gear ring surface in the same diameter direction; one end of the drive shaft is perpendicular to the gear disk and fixedly connected to the center of the gear disk, and the other end of the drive shaft passes through the center of the sealing plate and extends into the bottom tube to be coaxially connected to the motor shaft; a stirring shaft perpendicular to the horizontal plane is installed at the center of each of the two gears, and the other end of the two stirring shafts passes through the sealing plate, with a stirring paddle installed on the stirring shafts that extend out of the sealing plate; The spraying assembly includes a spray pipe and a nozzle. The spray pipe is ring-shaped and installed on the top of the tank by a pipe clamp. The spray pipe is provided with a connecting pipe that passes through the top of the tank. The nozzle is located at the bottom of the spray pipe and is inclined towards the conical distribution plate.

2. The dispersion device for surface modification of silicon micropowder according to claim 1, characterized in that, The diameter of the upper surface of the conical distributing plate is larger than the diameter of the lower surface, and the longitudinal section of the upper surface is conical. The silicon micro powder is added into the tank through the feed pipe, and the silicon micro powder will disperse and slide down along the upper surface of the conical distributing plate.

3. The dispersion device for surface modification of silicon micropowder according to claim 1, characterized in that, The bottom end of the drive shaft is connected to an auger blade that moves within the bottom tube. After the stirring and dispersion are completed, the drive shaft is rotated in the opposite direction to transport the silicon powder using the auger blade.

4. The dispersion device for surface modification of silicon micropowder according to claim 1, characterized in that, The motor is a vertical motor, installed on the bottom wall of the base tube.

5. The dispersion device for surface modification of silicon micropowder according to claim 1, characterized in that, The tank has an observation window on its side wall to facilitate observation of the dispersion inside the tube.

6. The dispersion device for surface modification of silicon micropowder according to claim 1, characterized in that, The outlet of the discharge pipe is inclined downwards.

Images