Vacuum filtration device for fine powder

Abstract

The utility model discloses a fine powder vacuum suction filtration device, and relates to the field of suction filtration devices. The fine powder vacuum filtration device comprises a fixing frame, a stirring barrel with a plurality of through holes in the bottom, a lifting mechanism fixedly connected with the fixing frame, a stirring mechanism fixedly connected with the lifting mechanism, a guide barrel fixedly arranged in the fixing frame and a furnace barrel fixedly arranged in the fixing frame, and the furnace barrel can be vacuumized by external equipment; the guide barrel is arranged above the furnace barrel and communicated with the furnace barrel, the stirring barrel is arranged on the upper portion of the guide barrel and detachably connected with the guide barrel in a fastened mode, the stirring mechanism can move up and down under driving of the lifting mechanism, the stirring barrel comprises a filtering mechanism capable of filtering fine powder, and the filtering mechanism is arranged at the bottom of the stirring barrel. And when the furnace barrel is vacuumized, liquid in the stirring barrel can flow through the guide barrel through the filtering mechanism and then enters the furnace barrel. According to the device, silicon carbide powder cleaned through stirring and suction filtration can be conveniently taken out from the stirring barrel.

Description

Technical Field

[0001] This application relates to the field of vacuum filtration devices, and more particularly to vacuum filtration devices for fine powders. Background Technology

[0002] Cleaning is a crucial step in the production and processing of silicon carbide powder to ensure its purity and quality. Hydrofluoric acid is typically used as a cleaning agent because it effectively removes impurities from the surface of the silicon carbide powder. However, after cleaning, the silicon carbide powder needs to be separated from the waste liquid, a process usually achieved using stirred filtration technology.

[0003] In existing technologies, the mixing and filtration of silicon carbide powder with hydrofluoric acid is typically carried out in a fixed mixing tank. This mixing tank and the furnace tank containing the filtrate are usually integrated or fixedly installed, which not only hinders equipment disassembly and cleaning but also increases the difficulty of removing the cleaned silicon carbide powder. Furthermore, the mixing tank contains stirring rods and blades to ensure thorough mixing of the silicon carbide powder and the cleaning solution. These stirring rods and blades also make it difficult to remove the cleaned silicon carbide powder from the mixing tank. Utility Model Content

[0004] To address the problem in existing technologies where silicon carbide powder, after being washed by stirring and filtration, is difficult to remove from the stirring tank, this application provides a fine powder vacuum filtration device, the specific solution of which is as follows:

[0005] The fine powder vacuum filtration device includes a fixed frame, a stirring tank with several through holes at the bottom, a lifting mechanism fixedly connected to the fixed frame, a stirring mechanism fixedly connected to the lifting mechanism, a guide tank fixedly installed inside the fixed frame, and a furnace tank fixedly installed inside the fixed frame. The furnace tank can be vacuumed by external equipment. The guide tank is located above the furnace tank and communicates with the furnace tank. The stirring tank is located above the guide tank and is detachably and securely connected to the guide tank. The stirring mechanism can move up and down under the drive of the lifting mechanism. The stirring tank includes a filtering mechanism capable of filtering fine powder. The filtering mechanism is located at the bottom of the stirring tank. When the furnace tank is vacuumed, the liquid in the stirring tank can flow through the filtering mechanism, through the guide tank, and then into the furnace tank.

[0006] Preferably, the filtration mechanism includes a filter cloth and a filter cloth fixing plate with a plurality of filter holes. The filter cloth is disposed at the bottom of the mixing tank, and the filter cloth fixing plate is disposed below the filter cloth. The filter cloth fixing plate is detachably connected to the mixing tank, and the filter cloth is clamped and fixed between the filter cloth fixing plate and the mixing tank.

[0007] Preferably, the outer barrel of the mixing tank is fixedly provided with a bushing, and the inner barrel of the guide barrel is fixedly provided with a sealing ring. The bushing and the upper side of the sealing ring are sealed together, and the filter cloth fixing plate is sealed together with the inner ring of the sealing ring.

[0008] Preferably, the upper part of the inner ring of the sealing ring is provided with an annular inclined surface, which is adjacent to the upper side of the sealing ring.

[0009] Preferably, the guide barrel includes an annular barrel circumference and a conical barrel circumference from top to bottom.

[0010] Preferably, the lifting mechanism includes a cylinder and a lifting frame, the lifting frame is fixedly connected to the stirring mechanism, and the cylinder drives the lifting frame to move up and down, thereby driving the stirring mechanism to move up and down.

[0011] Preferably, the stirring mechanism includes a motor, a stirring shaft fixedly connected to the moving end of the motor, and at least two stirring blades fixedly connected to the stirring shaft. The stirring shaft is driven by the motor to drive the stirring blades to rotate.

[0012] Preferably, the inner walls of the mixing tank, the guide tank, and the furnace tank are all fixedly coated with polytetrafluoroethylene.

[0013] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0014] 1. The mixing tank and the guide tank are detachably and securely connected. At the same time, the mixing mechanism can move up and down under the drive of the lifting mechanism. Therefore, when it is necessary to remove the cleaned silicon carbide powder, the mixing mechanism can be raised first, and then the mixing tank can be removed to facilitate the removal of the cleaned silicon carbide powder.

[0015] 2. The filter cloth fixing plate and the mixing tank are detachably connected. The filter cloth is clamped and fixed between the filter cloth fixing plate and the mixing tank. This setting is convenient for replacing the filter cloth.

[0016] 3. The upper side of the liner ring and the sealing ring are sealed together, and the filter cloth fixing plate is sealed together with the inner ring of the sealing ring, thereby enhancing the airtightness between the mixing tank and the guide tank, thus ensuring the filtration effect and preventing the cleaning agent from leaking.

[0017] 4. The annular bevel of the sealing ring facilitates the installation of the mixing tank, especially the sealing fit between the filter cloth fixing plate and the inner ring of the sealing ring.

[0018] Therefore, this application facilitates the removal of silicon carbide powder from the mixing tank after it has been washed by stirring and filtration.

[0019] The above description is merely an overview of the technical solution of this application. To better understand the technical means of this application and to facilitate its implementation according to the description, and to make the above and other objects, features, and advantages of this application more apparent, specific embodiments of this application are described below. It should be understood that the content described in this section is not intended to identify key or important features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent through the following description. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the fine powder vacuum filtration device provided in the embodiments of this application;

[0022] Figure 2 This is a schematic diagram of the structure of the mixing tank provided in the embodiment of this application.

[0023] In the diagram: 1-fixed frame; 2-mixing tank; 21-filtration mechanism; 211-filter cloth; 212-filter cloth fixing plate; 22-liner ring; 3-lifting mechanism; 4-mixing mechanism; 5-guide tank; 51-circular tank circumference; 52-conical tank circumference; 6-furnace tank. Detailed Implementation

[0024] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described in this application are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] Please refer to the following: Figure 1 and Figure 2The fine powder vacuum filtration device includes a fixed frame 1, a stirring tank 2 with several through holes at the bottom, a lifting mechanism 3 fixedly connected to the fixed frame 1, a stirring mechanism 4 fixedly connected to the lifting mechanism 3, a guide tank 5 fixedly installed inside the fixed frame 1, and a furnace tank 6 fixedly installed inside the fixed frame 1. The stirring tank 2 has several through holes at the bottom, including a case where the stirring tank 2 has a through hole that penetrates the entire bottom. In this case, it is equivalent to the stirring tank 2 having no bottom. The furnace tank 6 can be vacuumed by external equipment. The guide tank 5 is located above the furnace tank 6 and communicates with the furnace tank 6. The stirring tank 2 is located on the upper part of the guide tank 5 and is detachably and securely connected to the guide tank 5. The stirring mechanism 4 can move up and down under the drive of the lifting mechanism 3. The stirring tank 2 includes a filter mechanism 21 capable of filtering fine powder. The filter mechanism 21 is located at the bottom of the stirring tank 2. When the furnace tank 6 is vacuumed, the liquid in the stirring tank 2 can flow through the filter mechanism 21, through the guide tank 5, and then into the furnace tank 6.

[0026] Specifically, please refer to the following: Figure 2 The filtration mechanism 21 includes a filter cloth 211 and a filter cloth fixing plate 212 with a plurality of filter holes. The filter cloth 211 is disposed on the outer bottom of the mixing tank 2, and the filter cloth fixing plate 212 is disposed on the lower side of the filter cloth 211. The filter cloth fixing plate 212 is detachably connected to the mixing tank 2, and the filter cloth 211 is clamped and fixed between the filter cloth fixing plate 212 and the mixing tank 2.

[0027] Specifically, the outer barrel of the mixing tank 2 is fixedly provided with a bushing 22, and the inner barrel of the guide tank 5 is fixedly provided with a sealing ring. The bushing 22 and the upper side of the sealing ring are sealed together, and the filter cloth fixing plate 212 is sealed together with the inner ring of the sealing ring, thereby realizing the detachable and fastened connection between the mixing tank 2 and the guide tank 5.

[0028] Specifically, the upper part of the inner ring of the sealing ring is provided with an annular inclined surface, which is adjacent to the upper side of the sealing ring.

[0029] Specifically, please refer to the following: Figure 1 The guide barrel 5 includes, from top to bottom, an annular barrel circumference 51 and a conical barrel circumference 52.

[0030] Specifically, please refer to the following: Figure 1 The lifting mechanism 3 includes a cylinder and a lifting frame. The lifting frame is fixedly connected to the stirring mechanism 4. The cylinder drives the lifting frame to move up and down, thereby driving the stirring mechanism 4 to move up and down.

[0031] Specifically, please refer to the following: Figure 1The stirring mechanism 4 includes a motor, a stirring shaft fixedly connected to the moving end of the motor, and at least two stirring blades fixedly connected to the stirring shaft. The stirring shaft is driven by the motor to drive the stirring blades to rotate.

[0032] Specifically, the inner walls of the mixing tank 2, the guide tank 5, and the furnace tank 6 are all fixed with a polytetrafluoroethylene coating, which is corrosion resistant and anti-sticking.

[0033] A mixture of cleaning agent and silicon carbide powder is added to the mixing tank 2. The cleaning agent can be hydrofluoric acid. At this time, the stirring blades are located inside the mixing tank 2 and are driven by a motor to stir the mixture to prevent the silicon carbide powder from settling and accumulating at the bottom of the mixing tank 2. At the same time, an external device is used to evacuate the furnace tank 6, so that the waste liquid in the mixing tank 2 is drawn into the furnace tank 6. Due to the filter mechanism 21, the cleaned silicon carbide powder is still retained in the mixing tank 2. After the waste liquid is fully extracted, the stirring blades and stirring shaft move upward under the drive of the lifting mechanism 3, which facilitates the disassembly of the mixing tank 2. After the mixing tank 2 is removed, the cleaned silicon carbide powder can be easily taken out. After the silicon carbide powder is taken out, the mixing tank 2 is reinstalled in its original position. Specifically, the liner 22 is sealed with the upper side of the sealing ring and the filter cloth fixing plate 212 is sealed with the inner ring of the sealing ring to ensure the airtightness between the mixing tank 2 and the guide tank 5.

[0034] In summary, this application facilitates the removal of silicon carbide powder from the mixing tank after cleaning through stirring and filtration.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0036] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of this application and its equivalents, this application also intends to include such modifications and variations.

Claims

1. A fine powder vacuum filtration device, characterized in that, The device includes a fixed frame, a mixing tank with several through holes at the bottom, a lifting mechanism fixedly connected to the fixed frame, a mixing mechanism fixedly connected to the lifting mechanism, a guide tank fixedly installed inside the fixed frame, and a furnace tank fixedly installed inside the fixed frame. The furnace tank can be evacuated by external equipment. The guide tank is located above the furnace tank and communicates with it. The mixing tank is located above the guide tank and is detachably and securely connected to it. The mixing mechanism can move up and down under the drive of the lifting mechanism. The mixing tank includes a filter mechanism capable of filtering fine powder. The filter mechanism is located at the bottom of the mixing tank. When the furnace tank is evacuated, the liquid in the mixing tank can flow through the filter mechanism, through the guide tank, and then into the furnace tank.

2. The fine powder vacuum filtration device as described in claim 1, characterized in that, The filtration mechanism includes a filter cloth and a filter cloth fixing plate with a plurality of filter holes. The filter cloth is located at the bottom of the mixing tank, and the filter cloth fixing plate is located below the filter cloth. The filter cloth fixing plate is detachably connected to the mixing tank, and the filter cloth is clamped and fixed between the filter cloth fixing plate and the mixing tank.

3. The fine powder vacuum filtration device as described in claim 2, characterized in that, The outer barrel of the mixing tank is fixedly provided with a bushing, and the inner barrel of the guide barrel is fixedly provided with a sealing ring. The bushing and the upper side of the sealing ring are sealed together, and the filter cloth fixing plate is sealed together with the inner ring of the sealing ring.

4. The fine powder vacuum filtration device as described in claim 3, characterized in that, The upper part of the inner ring of the sealing ring is provided with an annular inclined surface, which is adjacent to the upper side of the sealing ring.

5. The fine powder vacuum filtration device as described in claim 1, characterized in that, The guide barrel consists of an annular barrel circumference and a conical barrel circumference from top to bottom.

6. The fine powder vacuum filtration device as described in claim 1, characterized in that, The lifting mechanism includes a cylinder and a lifting frame. The lifting frame is fixedly connected to the stirring mechanism. The cylinder drives the lifting frame to move up and down, thereby driving the stirring mechanism to move up and down.

7. The fine powder vacuum filtration device as described in claim 1 or 6, characterized in that, The stirring mechanism includes a motor, a stirring shaft fixedly connected to the moving end of the motor, and at least two stirring blades fixedly connected to the stirring shaft. The stirring shaft is driven by the motor to rotate the stirring blades.

8. The fine powder vacuum filtration device as described in claim 1, characterized in that, The inner walls of the mixing tank, the guide tank, and the furnace tank are all fixedly coated with polytetrafluoroethylene.

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