Nanometer powder screening machine

Abstract

The utility model discloses a nano powder screening machine, and belongs to the technical field of ceramic powder screening. A nano powder screening machine comprises an ultrasonic generator and further comprises a funnel, a vibrating screen is arranged on the funnel, a screen mesh is arranged in the vibrating screen, and the output end of the ultrasonic generator is connected with the vibrating screen through a cable; the discharging pipeline is fixedly arranged at the bottom of the funnel, a bent pipe is fixedly arranged in the discharging pipeline, an air inlet pipe communicated with the bent pipe is arranged on the discharging pipeline, and an outlet of the bent pipe faces an outlet of the discharging pipeline; the ultrasonic generator is combined with the vibrating screen, ultrasonic vibration is formed, powder can be dispersed before mixing, the agglomeration phenomenon is avoided, the bent pipe is fixedly arranged in the discharging pipeline, materials can be prevented from being agglomerated and accumulated in the discharging pipeline, discharging of the materials is accelerated, the discharging pipeline is prevented from being blocked, and the service life of the discharging pipeline is prolonged. The use effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ceramic powder screening, in particular to a nano powder screening machine. Background Art

[0002] Ultrasonic vibrating screen is a device that uses ultrasonic technology for screening and filtering. The working principle of ultrasonic vibration is to use ultrasonic waves to generate tiny vibrations on the vibrating screen, so that the particles generate high-frequency micro-vibrations in the screen holes, thereby improving the screening effect.

[0003] In the preparation process of ceramic components such as MLCC (Multi-layer Ceramic Chip Capacitors), the first step is batching, which requires adding ceramic powder, solvent, adhesive, etc. into a sand mill crucible, and mixing the ceramic powder with the solvent, adhesive, etc. evenly through a sand mill to form a well-dispersed ceramic slurry. However, as the capacitance required for MLCC devices becomes higher and higher, the thickness of a single-layer diaphragm has reached less than 1μm. In this way, it is necessary to use barium titanate ceramic powder of 150nm and below as a matrix, and then mix oxide additives of less than 100nm as a modifier to achieve the basic characteristics of ultra-high capacity MLCC. Nano-ceramic powder has a high specific surface area and strong activity, and is easy to agglomerate when adding materials. The batching process causes pipe blockage and uneven slurry dispersion, which ultimately affects the reliability of MLCC.

[0004] Therefore, the existing MLCC nanopowder feeding and screening technology needs to be improved. Utility Model Content

[0005] The utility model aims to solve the problems in the prior art that the powders are easily blocked in the pipeline and the slurry is unevenly dispersed during the screening process, and proposes a nano powder screening machine.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A nano powder screening machine comprises an ultrasonic generator and also includes: a funnel, wherein the funnel is provided with a vibrating screen, a screen is provided inside the vibrating screen, and the output end of the ultrasonic generator is connected to the vibrating screen through a cable; a feeding pipe fixedly arranged at the bottom of the funnel, wherein a bent pipe is fixedly arranged inside the feeding pipe, an air inlet pipe connected to the bent pipe is provided on the feeding pipe, and the outlet of the bent pipe faces the outlet of the feeding pipe.

[0008] In order to prevent the material from piling up in the discharge pipe, preferably, the elbows are evenly arranged in multiple groups.

[0009] In order to increase the material lowering speed, preferably, a first channel and a second channel are opened in the material discharge pipe, the outlet of the first channel is connected to the inlet of the second channel, and the diameter of the first channel is smaller than the diameter of the second channel.

[0010] In order to facilitate the material to enter the second channel, further, the first channel and the second channel are coaxially arranged.

[0011] Furthermore, the curved pipe is located in the first channel, and an outlet of the curved pipe faces the second channel.

[0012] Preferably, a mounting seat is fixedly provided on the discharge pipe, and the air intake pipe is fixedly provided on the mounting seat.

[0013] Compared with the prior art, the utility model provides a nano powder screening machine, which has the following beneficial effects:

[0014] 1. The nano powder screening machine combines an ultrasonic generator with a vibrating screen to form ultrasonic vibrations, which can disperse the powder before mixing to avoid agglomeration. In addition, a bent pipe is fixed in the feeding pipe to avoid agglomeration and accumulation of materials in the feeding pipe, accelerate the discharge of materials, prevent the feeding pipe from being blocked, and improve the use effect.

[0015] 2. The nano powder screening machine has a first channel and a second channel in the feeding pipe, and the diameter of the second channel is larger than the diameter of the first channel, which is similar to a venturi, so that the falling of the material can be accelerated and the use effect can be improved.

[0016] The parts not involved in the device are the same as the existing technology or can be implemented by the existing technology. The utility model combines an ultrasonic generator with a vibrating screen to form ultrasonic vibration, which can disperse the powder before mixing to avoid agglomeration. In addition, a bent pipe is fixedly arranged in the discharge pipe to avoid agglomeration and accumulation of materials in the discharge pipe, accelerate the discharge of materials, prevent the discharge pipe from being blocked, and improve the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a nano powder screening machine proposed in the utility model. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of a nano powder screening machine proposed in the utility model. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the structure of a nano powder screening machine proposed in the utility model. Figure 3 ;

[0020] Figure 4 The utility model is a schematic diagram of the structure of a nano powder screening machine funnel.

[0021] In the figure: 1, ultrasonic generator; 2, vibrating screen; 201, screen; 3, funnel; 301, feed pipe; 302, first channel; 303, second channel; 304, elbow; 4, mounting seat; 401, air inlet pipe. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] Example:

[0025] Reference Figure 1-Figure 4, a nano powder screening machine, including an ultrasonic generator 1, on which a normal vibration mode or a pulse vibration mode can be set, the vibration time can be set by a knob, and there is also temperature monitoring, and also includes: a funnel 3 in a rotating body structure, the funnel 3 includes a cylindrical tube and a truncated cone tube, the cylindrical tube is fixed to the large end of the truncated cone tube, wherein a vibrating screen 2 is arranged on the funnel 3, when in use, the vibrating screen 2 is placed in the cylindrical tube of the funnel 3, the outer wall of the vibrating screen 2 is against the inner wall of the cylindrical tube, and the bottom of the vibrating screen 2 is against the mouth of the large end of the truncated cone tube, which is convenient for the assembly and disassembly of the vibrating screen 2 and can also prevent the vibrating screen 2 from detaching from the funnel 3, a screen 201 is fixedly arranged in the vibrating screen 2, the material of the screen 201 is stainless steel or polymer, preferably stainless steel, and the screen 201 generally adopts 100 mesh to 500 mesh, the output end of the ultrasonic generator 1 is connected to the vibrating screen 2 through a cable, and the vibration signal can be transmitted to The vibrating screen 2 is provided with a screen 201 to break and screen the nano powder through high-frequency vibration; a feed pipe 301 is fixedly provided at the bottom of the funnel 3, wherein a bent pipe 304 is fixedly provided in the feed pipe 301, and the bent pipe 304 is evenly provided with multiple groups, and the bent pipe 304 is provided with two to six groups, preferably two groups, and an air inlet pipe 401 connected to the bent pipe 304 is provided on the feed pipe 301, and the air inlet pipe 401 is also provided with two groups, and the bent pipe 30 The outlet of 4 is toward the outlet of the material discharge pipe 301. When in use, a bent pipe 304 whose outlet is consistent with the outlet of the material discharge pipe 301 is fixedly provided in the material discharge pipe 301, and then an air inlet pipe 401 connected to the bent pipe 304 is provided. Nitrogen can be introduced into the air inlet pipe 401 and then sprayed out through the bent pipe 304. This can avoid the agglomeration and accumulation of materials in the material discharge pipe 301, accelerate the discharge of materials, and prevent the material discharge pipe 301 from being blocked, which affects the use effect.

[0026] When in use, the ultrasonic generator 1 is combined with the vibrating screen 2 to form ultrasonic vibration, which can disperse the powder before mixing to avoid agglomeration. In addition, a bent pipe 304 is fixedly arranged in the discharge pipe 301 to avoid agglomeration and accumulation of materials in the discharge pipe 301, accelerate the discharge of materials, prevent the discharge pipe 301 from being blocked, and improve the use effect. By opening a first channel 302 and a second channel 303 in the discharge pipe 301, and the diameter of the second channel 303 is larger than the diameter of the first channel 302, which is similar to a venturi, the falling of materials can be accelerated and the use effect can be improved.

[0027] Reference Figure 4We open a first channel 302 and a second channel 303 in the discharge pipe 301, and set the first channel 302 and the second channel 303 coaxially, connect the outlet of the first channel 302 with the inlet of the second channel 303, and the diameter of the first channel 302 is smaller than the diameter of the second channel 303. When in use, by opening the first channel 302 and the second channel 303 in the discharge pipe 301, and the diameter of the second channel 303 is larger than the diameter of the first channel 302, it is similar to a venturi, which can speed up the falling of materials and improve the use effect.

[0028] Reference Figure 4 The elbow 304 is located in the first channel 302, and the outlet of the elbow 304 is facing the second channel 303. When in use, by fixing the elbow 304 in the first channel 302 and directing the outlet toward the second channel 303, the material in the first channel 302 can flow quickly into the second channel 303, thereby increasing the material discharge speed and avoiding the agglomeration of the material in the discharge pipe 301.

[0029] Reference Figure 4 A mounting base 4 is fixedly provided on the discharge pipe 301, and the mounting base 4 is fixed to the discharge pipe 301 by bolts or buckles, preferably bolts, to fix the air inlet pipe 401 on the mounting base 4, and two groups of sealing rings are fixedly provided on the inner wall of the mounting base 4, and the two groups of sealing rings are respectively located on the upper and lower sides of the outlet of the air inlet pipe 401, which can improve the sealing effect between the air inlet pipe 401 and the bent pipe 304, reduce gas leakage, and improve the use effect.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A nano powder screening machine, comprising an ultrasonic generator (1), characterized in that: Also includes: Funnel (3), Wherein, a vibrating screen (2) is arranged on the funnel (3), a screen (201) is arranged inside the vibrating screen (2), and an output end of the ultrasonic generator (1) is connected to the vibrating screen (2) via a cable; A material discharge pipe (301) is fixedly arranged at the bottom of the funnel (3), A bent pipe (304) is fixedly arranged inside the feed pipe (301), an air inlet pipe (401) connected to the bent pipe (304) is arranged on the feed pipe (301), and the outlet of the bent pipe (304) faces the outlet of the feed pipe (301).

2. A nano powder screening machine according to claim 1, characterized in that: The bent pipes (304) are evenly arranged in multiple groups.

3. A nano powder screening machine according to claim 1, characterized in that: The discharge pipe (301) is provided with a first channel (302) and a second channel (303), the outlet of the first channel (302) is connected to the inlet of the second channel (303), and the diameter of the first channel (302) is smaller than the diameter of the second channel (303).

4. A nano powder screening machine according to claim 3, characterized in that: The first channel (302) and the second channel (303) are coaxially arranged.

5. A nano powder screening machine according to claim 4, characterized in that: The curved pipe (304) is located in the first channel (302), and the outlet of the curved pipe (304) faces the second channel (303).

6. A nano powder screening machine according to claim 1, characterized in that: A mounting seat (4) is fixedly arranged on the discharge pipe (301), and the air intake pipe (401) is fixedly arranged on the mounting seat (4).

Images