Negative pressure material taking equipment for silicon carbide raw material processing

Abstract

The utility model discloses negative pressure material taking equipment for silicon carbide raw material processing, and relates to the field of silicon carbide raw material processing. Negative pressure material taking equipment for silicon carbide raw material processing comprises a base, a ball mill body is rotationally connected to the base through a support, through openings are formed in the two ends of the ball mill body, and the negative pressure material taking equipment further comprises a material collecting box fixedly installed on the base; by adopting a negative-pressure material taking mode, ground silicon carbide powder can be quickly taken out from the ball mill body, the problems of slow material taking, powder residue and the like possibly occurring in a traditional material taking mode are avoided, the material taking efficiency is greatly improved, the operation of the ball mill body does not need to be stopped when the negative-pressure material taking equipment takes materials, and the material taking efficiency is greatly improved. The ball mill can continuously grind the silicon carbide raw material, so that the continuity of the grinding process is ensured, the ground powder can be taken out in time, the reduction of the quality of the raw material caused by excessive grinding is avoided, and the quality of the silicon carbide raw material is favorably ensured.

Description

Technical Field

[0001] This utility model belongs to the field of silicon carbide raw material processing technology, specifically, it relates to a negative pressure material handling device for silicon carbide raw material processing. Background Technology

[0002] Silicon carbide, as an important industrial raw material, is widely used in many fields such as abrasives, refractory materials, and semiconductors due to its high hardness, high temperature resistance, and good chemical stability. In the production process of silicon carbide, raw material processing is a crucial step, and ball milling is a common method to refine silicon carbide raw materials.

[0003] In the prior art, when removing the powdered silicon carbide raw material from the ball mill, it is often necessary to stop the machine and remove the material manually or mechanically. This method is not only cumbersome to operate, but also consumes a lot of time, which seriously affects production efficiency. For example, in the large-scale production of silicon carbide powder, frequent machine stops for material removal will delay the overall production progress and fail to meet the growing market demand for silicon carbide products. Furthermore, during the machine stoppage for material removal, some of the already ground silicon carbide powder may be over-ground due to prolonged stay in the ball mill, changing its particle size distribution, which is not conducive to ensuring the quality of the final product. In view of this, this utility model is proposed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a negative pressure material handling device for silicon carbide raw material processing that can overcome or at least partially solve the above problems.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows: a negative pressure material handling device for silicon carbide raw material processing, including a base, on which a ball mill body is rotatably connected via supports, and both ends of the ball mill body are provided with openings; further including: a collection box, fixedly installed on the base; first filter plates, symmetrically fixedly connected inside the collection box; a negative pressure material handling pipe, horizontally arranged inside the ball mill body, with multiple suction heads equidistantly connected at positions inside the ball mill body; both ends of the negative pressure material handling pipe extend out of the ball mill body through the openings, and the discharge port is connected to the inlet of the collection box; a negative pressure pump, fixedly installed on the collection box, with the air outlet of the collection box located between two first filter plates, and the air extraction port of the negative pressure pump connected to the air outlet of the collection box; the collection box has symmetrical material handling openings at both ends on the side away from the ball mill body, and a cover plate is installed at the material handling opening.

[0006] To prevent the gas entering the ball mill body from being directly sucked away by the suction head, the negative pressure feed pipe is further provided with baffles symmetrically fixed at a position inside the ball mill body, and the baffles are located near the ball mill body inlet.

[0007] To better guide the airflow and impact the silicon carbide powder, the baffle is designed in a conical shape.

[0008] To facilitate the automatic removal of powder adhering to the first filter plate, two second filter plates are slidably connected in the collection box between the two first filter plates. Multiple guide rods are fixedly connected between the two first filter plates, and the second filter plates are slidably connected to the guide rods. A tension spring is fixedly connected between the two second filter plates, and the filter holes on the first and second filter plates are staggered.

[0009] To facilitate the removal of silicon carbide powder, the lower surface of the collection box located between the feed inlet and the first filter plate is further inclined, and the inclined surface gradually slopes towards the cover plate.

[0010] To facilitate workers' inspection of the amount of silicon carbide powder in the collection bin through the cover, the cover is further designed to be transparent.

[0011] To further improve the stability of the negative pressure feed pipe, a support plate for supporting the negative pressure feed pipe is fixedly connected to the support.

[0012] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: By adopting a negative pressure feeding method, the present invention can quickly remove the ground silicon carbide powder from the ball mill body, avoiding the problems of slow feeding and powder residue that may occur in traditional feeding methods, greatly improving the feeding efficiency. Moreover, the negative pressure feeding device does not need to stop the operation of the ball mill body when feeding, and the ball mill can continuously grind the silicon carbide raw material. This ensures the continuity of the grinding process and timely removal of the ground powder, avoiding the decline in raw material quality caused by over-grinding, and helps to ensure the grinding quality of silicon carbide raw material.

[0013] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0014] In the attached diagram:

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2This is a schematic diagram of the internal structure of the ball mill body of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the material collection box of this utility model.

[0018] In the diagram: 1. Base; 101. Support; 102. Support plate; 2. Ball mill body; 3. Collection box; 301. First filter plate; 302. Negative pressure pump; 303. Negative pressure feed pipe; 304. Suction head; 305. Baffle; 306. Cover plate; 307. Second filter plate; 308. Guide rod; 309. Tension spring; 3010. Inclined surface. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0020] Example 1:

[0021] Reference Figures 1-3 A negative pressure material handling device for processing silicon carbide raw materials includes a base 1, a ball mill body 2 rotatably connected to the base 1 via a support 101, and openings at both ends of the ball mill body 2. It also includes: a collection box 3, fixedly installed on the base 1; first filter plates 301 symmetrically fixedly connected inside the collection box 3; and a negative pressure material handling pipe 303 horizontally arranged inside the ball mill body 2, with multiple suction devices equidistantly connected to the negative pressure material handling pipe 303 inside the ball mill body 2. The head 304; both ends of the negative pressure feeding pipe 303 extend out of the ball mill body 2 through the port, and the discharge port is connected to the feed port of the collection box 3; the negative pressure pump 302 is fixedly installed on the collection box 3, the air outlet of the collection box 3 is located between the two first filter plates 301, and the air extraction port of the negative pressure pump 302 is connected to the air outlet of the collection box 3; the two ends of the collection box 3 away from the ball mill body 2 are symmetrically provided with feeding ports, and the feeding ports are equipped with cover plates 306.

[0022] During the grinding process of silicon carbide raw material added to the grinding chamber by the ball mill body 2, in order to easily remove the powdered silicon carbide raw material, the negative pressure pump 302 can be started. The negative pressure pump 302 will draw air from the air outlet of the collection box 3 through the air extraction port. Since the two ends of the negative pressure material extraction pipe 303 are connected to the feed inlets on both sides of the collection box 3, a low-pressure area will be formed in the negative pressure material extraction pipe 303 under the action of the negative pressure pump 302. Since the negative pressure material extraction pipe 303 continuously draws air from the inside of the ball mill body 2 through the suction head 304, a negative pressure environment can be formed inside the ball mill body 2. As a negative pressure is formed inside the ball mill body 2, external gas will quickly enter the ball mill body 2 under the action of pressure difference. During the process, the incoming airflow will disturb the silicon carbide raw material that has been ground into powder inside the ball mill body 2. Therefore, this airflow disturbance will cause the powdered silicon carbide raw material to be lifted up. When the silicon carbide powder is lifted up under the disturbance of the airflow, these suction heads 304 will quickly suck the lifted silicon carbide powder into the negative pressure feeding pipe 303 under the action of negative pressure. Then, the silicon carbide powder will be transported to the collection box 3 through the negative pressure feeding pipe 303. The silicon carbide powder and airflow entering the collection box 3 will be separated by the first filter plate 301. The first filter plate 301 can intercept the silicon carbide powder in the collection box 3, while the airflow is extracted through the air outlet under the continuous action of the negative pressure pump 302. When it is necessary to remove the silicon carbide powder, the cover plate 306 at the feeding port can be opened for operation.

[0023] By using negative pressure to extract material, the ground silicon carbide powder can be quickly removed from the ball mill body 2, avoiding problems such as slow extraction and powder residue that may occur with traditional extraction methods, and greatly improving extraction efficiency.

[0024] Although airflow disturbance is required to lift the silicon carbide powder during the material handling process, the entire process involves the flow of external gas into the ball mill body 2. Therefore, the silicon carbide powder is contained within the ball mill body 2 due to the airflow obstruction. Moreover, the lifted powder is immediately absorbed by the negative pressure material handling pipe 303. Compared with the traditional open material handling method, this effectively reduces the dust in the working environment, improves the working environment, and also reduces the waste of raw materials.

[0025] The negative pressure feeding device does not require stopping the operation of the ball mill body 2 when feeding materials. The ball mill can continuously grind the silicon carbide raw material. This ensures the continuity of the grinding process and allows the ground powder to be taken out in time, avoiding the decline in raw material quality caused by over-grinding and helping to ensure the grinding quality of silicon carbide raw material.

[0026] Example 2:

[0027] Reference Figures 1-3A negative pressure material handling device for processing silicon carbide raw materials is basically the same as that in Example 1, but with the following additional feature: a baffle 305 is symmetrically fixedly connected to the negative pressure material handling pipe 303 inside the ball mill body 2. The baffle 305 is located near the inlet of the ball mill body 2. The baffle 305 can block the gas and prevent the gas from blowing directly towards the suction head 304 and being sucked away by the suction head 304, thereby affecting the effect of the airflow on the silicon carbide powder.

[0028] Baffle 305 has a tapered design, such as Figure 2 As shown, by making the baffle 305 conical, when the external gas flows into the ball mill body 2 under the action of negative pressure, the baffle 305 can guide the gas, thereby directing the gas to the outside and enabling the gas to better lift the silicon carbide raw material ground into powder, so as to improve the extraction efficiency of silicon carbide powder by the negative pressure feed pipe 303.

[0029] Example 3:

[0030] Reference Figures 1-3 A negative pressure material handling device for silicon carbide raw material processing is basically the same as that in Example 2, but further: two second filter plates 307 are slidably connected in the material collection box 3 between two first filter plates 301, multiple guide rods 308 are fixedly connected between the two first filter plates 301, the second filter plates 307 are slidably connected to the guide rods 308, a tension spring 309 is fixedly connected between the two second filter plates 307, and the filter holes on the first filter plates 301 and the second filter plates 307 are staggered.

[0031] In the initial state, the second filter plate 307 is in contact with the first filter plate 301 on the same side under the tension of the tension spring 309. When the negative pressure pump 302 is started, it will suck the inside of the collection box 3. At this time, the second filter plate 307 will overcome the tension of the tension spring 309 and leave the first filter plate 301 under the action of negative pressure, so that the filter holes on the first filter plate 301 can be unblocked. Then, the ball mill body 2 can be sucked through the negative pressure feeding pipe 303. After the feeding is completed, the negative pressure pump 302 can be turned off, and the restriction on the tension spring 309 will be released. Then, the tension spring 309 will drive the second filter plate 307 to reset and impact the first filter plate 301, thereby shaking off the silicon carbide powder attached to the first filter plate 301 and ensuring the airflow through the first filter plate 301.

[0032] Example 4:

[0033] Reference Figures 1-3A negative pressure material handling device for processing silicon carbide raw materials is basically the same as that in Example 3, but further: the lower surface of the material collection box 3 located between the feed inlet and the first filter plate 301 is an inclined surface 3010. The inclined surface 3010 gradually tilts towards one side of the cover plate 306. The inclined surface 3010 can guide the silicon carbide powder, so that when it is necessary to remove the silicon carbide powder from the material collection box 3, it is easier for the staff to remove it.

[0034] The cover plate 306 is transparent. By using a transparent material to make the cover plate 306, it is easy for staff to see the amount of silicon carbide powder in the collection box 3, so that it can be taken out of the collection box 3 in a timely manner, which provides convenience for staff to retrieve materials.

[0035] A support plate 102 for supporting the negative pressure feed pipe 303 is fixedly connected to the support 101. The support plate 102 can support the negative pressure feed pipe 303, thereby improving the stability of the negative pressure feed pipe 303.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model.

Claims

1. A negative pressure material handling device for processing silicon carbide raw materials, characterized in that, Including the base (1), the ball mill body (2) is rotatably connected on the base (1) through the support (101), both ends of the ball mill body (2) are provided with a through port, further comprising: Aggregate tank (3), fixedly installed on the base (1); The first filter plate (301) is symmetrically fixedly connected in the aggregate tank (3); The negative pressure material taking pipe (303) is transversely arranged in the ball mill body (2), and a plurality of suction heads (304) are equidistantly connected to the negative pressure material taking pipe (303) inside the ball mill body (2); Both ends of the negative pressure material taking pipe (303) extend out of the ball mill body (2) through the through port, and the discharge port is connected with the inlet of the aggregate tank (3); The negative pressure pump (302) is fixedly installed on the aggregate tank (3), and the gas outlet of the aggregate tank (3) is arranged at a position between the two first filter plates (301), and the gas suction port of the negative pressure pump (302) is connected with the gas outlet of the aggregate tank (3); The aggregate tank (3) is symmetrically provided with a material taking port at both ends of the side away from the ball mill body (2), and the material taking port is provided with a cover plate (306).

2. The negative pressure material taking device for processing silicon carbide raw materials according to claim 1, characterized in that, The negative pressure material taking pipe (303) is symmetrically fixedly connected with a baffle (305) at a position in the ball mill body (2), and the baffle (305) is located close to the through port of the ball mill body (2).

3. The negative pressure material taking device for processing silicon carbide raw materials according to claim 2, characterized in that, The baffle (305) is designed in a conical shape.

4. The negative pressure material taking device for processing silicon carbide raw materials according to claim 1, characterized in that, Two second filter plates (307) are slidably connected in the aggregate tank (3) between the two first filter plates (301), a plurality of guide rods (308) are fixedly connected between the two first filter plates (301), the second filter plates (307) are slidably connected on the guide rods (308), a tension spring (309) is fixedly connected between the two second filter plates (307), and the filter holes on the first filter plates (301) and the second filter plates (307) are distributed staggered.

5. The negative pressure material taking device for processing silicon carbide raw materials according to claim 1, characterized in that, The lower surface of the aggregate tank (3) between the inlet and the first filter plate (301) is an inclined surface (3010), and the inclined surface (3010) gradually inclines to one side of the cover plate (306).

6. The negative pressure material taking device for processing silicon carbide raw materials according to claim 5, characterized in that, The cover plate (306) is transparent.

7. The negative pressure material taking device for processing silicon carbide raw materials according to claim 1, characterized in that, The support plate (102) for supporting the negative pressure material taking pipe (303) is fixedly connected to the support (101).

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