CN115805652A

CN115805652A - Silicon nitride ceramic mixing equipment for thick liquids

Info

Publication number: CN115805652A
Application number: CN202211113390.4A
Authority: CN
Inventors: 朱福林; 肖亮; 罗文军; 肖立; 姜杰英
Original assignee: Hengyang Kaixin Special Materials Technology Co ltd
Current assignee: Hengyang Kaixin Special Materials Technology Co ltd
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2023-03-17

Abstract

The invention discloses a mixing device for silicon nitride ceramic slurry, which comprises a stirring bin, wherein a height difference exists between a first outlet of the stirring bin and an inlet of a granulation tower, the height difference is used for enabling materials to flow out and enter the granulation tower, a first pipeline for reducing backflow of light materials is connected between the outlet of the stirring bin and the inlet of the granulation tower, an electromagnetic valve is arranged on the first pipeline, a second outlet, close to the upper layer, of the stirring bin is connected with a second pipeline, an outlet at the other end of the second pipeline is connected with the inlet of the granulation tower, and the light materials are conveyed into the granulation tower through a suction pump. This equipment enters into the prilling tower of below through first pipeline through heavier lower floor's material, and during lighter upper material is direct directly through connecting the second pipeline in stirring feed bin upper end and directly carry the prilling tower through the diaphragm plate to through the diameter ratio of controlling first pipeline and second pipeline, the ratio of accurate control lower floor's material and upper material.

Description

Silicon nitride ceramic mixing equipment for thick liquids

Technical Field

The invention relates to the technical field of ceramic mixing, in particular to mixing equipment for silicon nitride ceramic slurry.

Background

The mixing process is a necessary process for mixing silicon nitride ceramic slurry. In the production process of ceramics, a solvent, a binder, a plasticizer and the like are basically required to be added into raw materials to improve the comprehensive performance of the ceramics, and the raw materials are required to be uniformly mixed according to a certain proportion to ensure the final using effect of the ceramics.

The existing bulletproof ceramic mixer quantitative feeding device disclosed by the publication number of CN214871700U utilizes the arrangement of the feeding pipe, the feeding bin and the electronic scale, the bulletproof ceramic raw materials in the feeding bin are weighed by the electronic scale, and then the bulletproof ceramic raw materials with known weight in the feeding bin are introduced into the mixing box through the feeding pipe, so that the proportioning precision of various bulletproof ceramic production raw materials in the mixing machine is improved, and although the proportioning precision can also be improved, the situation that the bulletproof ceramic raw materials cannot be uniformly mixed still can be caused.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides mixing equipment for silicon nitride ceramic slurry, which comprises a stirring bin;

a height difference exists between a first outlet of the stirring bin and an inlet of the granulation tower, and is used for the outflow of materials and the entrance of the materials into the granulation tower;

and a second outlet of the stirring bin, which is close to the upper layer, is connected with a second pipeline, an outlet at the other end of the second pipeline is connected with an inlet of the granulation tower, and the light material is conveyed into the granulation tower through a suction pump.

As a further description of the above technical solution, a position of the second pipeline close to the inlet of the prilling tower is connected with a return pipeline, and the return pipeline is communicated with the stirring bin.

As a further description of the above technical solution, the backflow port of the backflow pipeline is communicated with the upper end of the stirring storage bin.

As a further description of the above technical solution, a section of the second pipeline close to the prilling tower is provided with a check valve, and a joint between the check valve and the return pipeline is provided with an elbow.

As a further description of the above technical solution, the first pipeline includes a feeding pipe, a discharging pipe and a plurality of bent pipelines arranged between the feeding pipe and the discharging pipe, and the bent pipelines are used for blocking the backflow of the light material.

As a further description of the above technical solution, a diameter ratio of the bent pipe to the second pipe is N.

As a further description of the above technical solution, the first pipeline is a vertical pipeline, and at least one check valve is sequentially arranged on the pipeline, and the flow direction of the medium in the check valve is from the stirring bin to the granulation bin.

As a further description of the above technical solution, a plurality of inclined baffles are staggered inside the first pipeline.

As a further description of the above technical solution, the baffle is semi-elliptical.

As a further description of the above solution, the size of the baffle is adapted to the size of the first duct.

The invention has the following beneficial effects:

the invention enters the lower granulation tower through the first pipeline by the heavier lower material, and the lighter upper material is directly conveyed to the granulation tower through the second pipeline connected with the upper end of the stirring bin and the diaphragm plate, and the ratio of the lower material to the upper material is accurately controlled to mix by controlling the ratio of the first pipeline to the second pipeline.

According to the invention, the bent pipeline arranged in the middle of the first pipeline can reduce the influence on the ratio of the ceramic raw material to the light material caused by the fact that the light material entering the granulation tower flows back to the stirring bin through the first pipeline again.

Drawings

Fig. 1 is a schematic view of a mixing device according to an embodiment of the present application;

FIG. 2 is a schematic view of a mixing apparatus according to a second embodiment of the present disclosure;

fig. 3 is a schematic view of a mixing apparatus provided in the third embodiment of the present application.

Illustration of the drawings:

1. a stirring bin; 101. a first outlet; 102. a second outlet; 2. a prilling tower; 3. a first conduit; 301. a feed pipe; 302. a discharge pipe; 303. bending the pipeline; 4. a second conduit; 5. a suction pump; 6. a return line; 7. a check valve; 8. bending the pipe; 9. a one-way valve; 10. and a baffle plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1, the mixing apparatus for silicon nitride ceramic slurry according to the present invention includes a stirring bin 1, i.e., a slurry stirring bin, a first outlet 101 at a lower end of the stirring bin is connected to an inlet of a granulation tower 2, and a certain height difference exists between the first outlet 101 and the inlet of the granulation tower 2, and a specific height difference value can be adjusted according to actual installation requirements, so that a ceramic raw material inside the stirring bin 1 can fall into the lower granulation tower 2 through a first pipeline 3 under the action of its own gravity for a next process, the first pipeline 3 includes a plurality of bending pipelines 303 disposed between a feeding pipe 301 and a discharging pipe 302 in addition to the feeding pipe 301 and the discharging pipe 302 respectively connected to the stirring bin 1 and the granulation tower 2, and meanwhile, an electromagnetic valve is disposed on the discharging pipe 302 for controlling an amount of the ceramic raw material falling into the lower granulation tower 2, so as to prevent light materials such as an adhesive and a plasticizer in the granulation tower from flowing back into the stirring bin due to its own weight, resulting in a mixing ratio different from a preset quality of a final finished product, and the number of the pipes 303 and the specific number of the bending pipelines 303 may also be set in this embodiment as two bending pipelines S.

The second outlet 102 at the upper end of the stirring bin 1 is connected with the discharge pipe 302 through the second pipeline 4, and a suction pump is arranged on the second pipeline 4, so as to directly pump the light materials such as the adhesive and the plasticizer floating on the upper layer of the stirring bin 1 into the granulation tower 2, and the diameter ratio of the first pipeline 3 to the second pipeline 4 is N, the value of N can be adjusted according to the actual situation, in this embodiment, N is 2, when the diameter of the first pipeline 3 to the second pipeline 4 is 2, that is, the diameter of the first pipeline 3 is twice the diameter of the second pipeline 14, then the ratio of the ceramic raw material and the light materials entering the lower granulation tower 2 from the stirring bin 1 is 2, thereby achieving the effect of accurately controlling the ratio of the ceramic raw material to the light materials, and simultaneously the whole device has a simple structure.

The second pipeline 4 is communicated with a backflow pipeline 6, the other end of the backflow pipeline 6 is connected with the upper side of the stirring bin 1, a check valve 7 is arranged at the position, close to the granulation tower 2, of the second pipeline 4, the check valve 7 can enable the suction pump 5, namely excessive slurry extracted by the diaphragm pump, to return to the stirring bin 1 through the backflow pipeline 6 through the check valve 7, and therefore the ceramic raw material and light material entering the granulation tower 2 are guaranteed to be accurate enough in proportion.

Example two:

referring to fig. 2, a difference of the mixing apparatus for silicon nitride ceramic slurry according to the first embodiment of the present invention is that, in the first embodiment, a plurality of baffles 10 are staggered in a bent pipe 303, each baffle 10 is a semi-elliptical thin plate, the shape and size of the baffle 10 are adapted to the inner wall of the bent pipe 303, and a certain included angle exists between the baffle 10 and the central axis of the bent pipe 303, in a simple manner, the baffle 10 faces the direction of raw material flow, i.e., the direction of the raw material flowing into a granulation tower 2 from a stirring bin 1, and the inclined baffle 10 can also reduce the backflow of a light material under the condition that the ceramsite raw material can flow smoothly.

Example three:

referring to fig. 3, the mixing apparatus for silicon nitride ceramic slurry according to the present invention is different from the first and second embodiments in that the first pipe 3 is a straight pipe, a plurality of check valves 9 are disposed on the first pipe 3, and the check valves 9 regulate the flow direction of the material, so that the material can only flow into the granulation tower 2 from the stirring bin 1, and the backflow of the light material is avoided. While the number of the check valves 9 can be adjusted according to the length of the first pipeline 3 in the practical application scenario, in the present embodiment, three check valves 9 are provided.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a silicon nitride ceramic is compounding equipment for thick liquids which characterized in that: comprises a stirring storage bin;

2. The compounding apparatus of claim 1, wherein: the position of the second pipeline, which is close to the inlet of the granulation tower, is connected with a return pipeline, and the return pipeline is communicated with the stirring bin.

3. A mixing apparatus as defined in claim 1, wherein: and a reflux opening of the reflux pipeline is communicated with the upper end of the stirring bin.

4. A mixing apparatus as defined in claim 1, wherein: the second pipeline is close to one section of prilling tower is provided with the check valve, the check valve with the junction between the return line is provided with the return bend.

5. The compounding apparatus of claim 1, wherein: the first pipeline includes the inlet pipe, and discharging pipe and setting are in the inlet pipe with a plurality of pipelines of bending between the discharging pipe, the pipeline of bending is used for blockking the backward flow of light material.

6. A mixing apparatus as defined in claim 5, wherein: the diameter ratio of the bending pipeline to the second pipeline is N.

7. A mixing apparatus as defined in claim 1, wherein: the first pipeline is a vertical pipeline, at least one-way valve is sequentially arranged on the pipeline, and the flow direction of media in the one-way valve is from the stirring bin to the granulating bin.

8. The compounding apparatus of claim 1, wherein: a plurality of inclined baffles are arranged inside the first pipeline in a staggered mode.

9. A mixing apparatus as defined in claim 8, wherein: the baffle is semi-elliptical.

10. A mixing apparatus as defined in claim 8, wherein: the size of the baffle is matched with that of the first pipeline.