A pretreatment device for high-performance silicon nitride material

Abstract

The application relates to a pretreatment device for high-performance silicon nitride material, and relates to the field of silicon nitride production equipment, which comprises a stirring kettle, a stirring mechanism and a feeding pipe. The stirring kettle comprises a kettle body and a cover body, the kettle body and the cover body are detachably connected, the stirring mechanism is arranged on the cover body, the stirring mechanism is used for being inserted into the kettle body and stirring, and the feeding pipe is connected to the kettle body. An air exhaust pipe is arranged on the cover body and penetrates through and communicates with the cover body. An air valve is arranged on the air exhaust pipe and used for controlling the on-off of the air exhaust pipe. The application has the effect of reducing the probability of raw material adhesion in the feeding pipe when feeding into the kettle body.

Description

Technical Field

[0001] This application relates to the field of silicon nitride production equipment, and in particular to a pretreatment apparatus for high-performance silicon nitride materials. Background Technology

[0002] In the production process of silicon nitride products, a silicon nitride suspension needs to be prepared first by stirring, and then the silicon nitride suspension is extruded and molded into products of different shapes. The preparation of silicon nitride suspension requires the use of a stirred tank. Liquid and solid raw materials are mixed into the stirred tank and stirred to prepare the silicon nitride suspension.

[0003] The existing mixing vessel includes a vessel body, a cover body, and a feed pipe. The vessel body and the cover body are detachably connected, and the feed pipe is connected to the vessel body. The material enters the vessel body through the feed pipe. The vessel body is equipped with a stirring mechanism, which is used to stir the material in the vessel body.

[0004] The aforementioned technical solutions have the following drawbacks: the raw materials used to produce silicon nitride suspension have high viscosity and tend to adhere to the inner wall of the feed pipe during feeding, which leads to errors in the raw material ratio within the reactor, resulting in the silicon nitride suspension composition not meeting expectations after stirring and poor production quality. Utility Model Content

[0005] In order to reduce the probability of raw materials adhering to the feed pipe when feeding into the reactor, this application provides a pretreatment device for high-performance silicon nitride materials.

[0006] This application provides a pretreatment apparatus for high-performance silicon nitride materials, employing the following technical solution:

[0007] A pretreatment device for high-performance silicon nitride materials includes a stirring vessel, a stirring mechanism, and a feed pipe. The stirring vessel includes a vessel body and a cover, which are detachably connected. The stirring mechanism is mounted on the cover and is used to insert into the vessel body for stirring. The feed pipe is connected to the vessel body. An exhaust pipe is provided on the cover, which passes through and connects to the cover. An air valve is provided on the exhaust pipe to control the opening and closing of the exhaust pipe.

[0008] By adopting the above technical solution, a stirring mechanism is installed on the lid, which can be inserted into the vessel body for stirring. A feed pipe is installed on the vessel body, allowing raw materials to enter the vessel body through the feed pipe. An exhaust pipe is installed on the lid, with one end connected to an air pump. After the user fixes the lid to the vessel body, the gas inside the vessel body can be extracted through the exhaust pipe, thus reducing the air pressure inside the stirring vessel. When the raw materials in the feed pipe enter the stirring vessel, the feed pipe connects to the stirring vessel, and the raw materials in the feed pipe can be completely drawn into the stirring vessel under the action of air pressure difference, reducing the probability of raw materials adhering to the feed pipe.

[0009] Optionally, the stirring mechanism includes a motor and a stirring shaft. The motor housing is fixed on the cover, the stirring shaft passes through the cover and is rotatably connected to the cover, and the motor output shaft is coaxially connected to the stirring shaft.

[0010] By adopting the above technical solution, by setting a stirring shaft on the cover and a motor on the stirring shaft, the motor can drive the stirring shaft to rotate, thereby causing the stirring shaft to drive the blades to rotate in the kettle, achieving the effect of stirring materials.

[0011] Optionally, the feed pipe includes an inclined pipe and a vertical pipe. The vertical pipe is set vertically, and one end of the inclined pipe is connected to the lower end of the vertical pipe, while the other end is connected to the vessel body. The end of the inclined pipe that is connected to the vertical pipe is higher, and the end that is connected to the vessel body is lower.

[0012] By adopting the above technical solution, by setting an inclined pipe below the vertical pipe, the raw materials can automatically fall into the reactor body through the feed pipe, reducing the probability of raw materials accumulating in the feed pipe.

[0013] Optionally, the reactor body is connected to two feed pipes.

[0014] By adopting the above technical solution, two feed pipes are installed on the reactor body, allowing liquid raw materials and solid raw materials to be poured into the reactor body respectively, which facilitates the control of the amount of raw materials entering the reactor body.

[0015] Optionally, an upper sealing valve and a lower sealing valve are installed on the vertical pipe, which are used to seal the vertical pipe.

[0016] By adopting the above technical solution, by setting an upper sealing valve and a lower sealing valve on the vertical pipe, when the user closes the lower sealing valve and opens the upper sealing valve, the raw material can enter between the upper sealing valve and the lower sealing valve through the vertical pipe. When the user closes the upper sealing valve and opens the lower sealing valve, the raw material can be poured into the reactor. During the feeding process, the reactor can remain sealed, thereby reducing the probability of raw material splashing out of the mixing reactor and adhering to the inner wall of the feed pipe.

[0017] Optionally, a flow monitor is provided on the feed pipe.

[0018] By adopting the above technical solution and installing a flow monitor on the feed pipe, users can determine the sealing performance of the upper and lower sealing valves by checking the readings of the flow monitor, thus facilitating the maintenance of the sealing valves.

[0019] Optionally, two flow monitors are provided, with the two flow monitors respectively located on the upper and lower sides of the upper sealing valve.

[0020] By adopting the above technical solution and installing flow monitors on the upper and lower sides of the upper sealing valve, users can judge the sealing performance of the upper and lower sealing valves by checking whether there are readings on the two flow monitors.

[0021] Optionally, a discharge pipe is provided at the bottom of the vessel body, and a valve body is provided on the discharge pipe.

[0022] By adopting the above technical solution, a discharge pipe is set at the bottom of the reactor body, and a valve body is set on the discharge pipe so that the valve body can control the opening and closing of the discharge pipe. After the stirring in the reactor body is completed, the silicon nitride suspension can flow out through the discharge pipe, reducing the steps for users to tilt the reactor body and pour out the suspension.

[0023] In summary, the beneficial technical effects of this application are as follows:

[0024] 1. By installing a stirring mechanism on the lid, the stirring mechanism can be inserted into the vessel body for stirring. By installing a feed pipe on the vessel body, the raw materials can enter the vessel body through the feed pipe. By installing an exhaust pipe on the lid, one end of the exhaust pipe is connected to an air pump. After the user fixes the lid to the vessel body, the gas in the vessel body can be extracted through the exhaust pipe, thereby reducing the air pressure in the stirring vessel. When the raw materials in the feed pipe enter the stirring vessel, the feed pipe is connected to the stirring vessel, and the raw materials in the feed pipe can be completely drawn into the stirring vessel under the action of air pressure difference, reducing the probability of raw materials adhering to the feed pipe.

[0025] 2. By installing an upper sealing valve and a lower sealing valve on the vertical pipe, when the user closes the lower sealing valve and opens the upper sealing valve, the raw material can enter between the upper and lower sealing valves through the vertical pipe. When the user closes the upper sealing valve and opens the lower sealing valve, the raw material can be poured into the reactor body. The reactor body can remain sealed during the feeding process, thereby reducing the chance of raw material splashing out of the mixing reactor and adhering to the inner wall of the feed pipe.

[0026] 3. By installing a flow monitor on the feed pipe, users can determine the sealing performance of the upper and lower sealing valves by checking the flow monitor readings, thus facilitating the maintenance of the sealing valves. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application. Figure 1 .

[0028] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application. Figure 2 .

[0029] Figure 3 This is a schematic diagram of the stirring mechanism according to an embodiment of this application.

[0030] Reference numerals in the attached drawings: 1. Stirring vessel; 11. Vessel body; 12. Cover; 13. Air extraction pipe; 14. Air valve; 2. Stirring mechanism; 21. Motor; 22. Stirring shaft; 3. Feed pipe; 31. Inclined pipe; 32. Vertical pipe; 33. Upper sealing valve; 34. Lower sealing valve; 35. Flow monitor; 4. Discharge pipe; 41. Valve body. Detailed Implementation

[0031] The present application will be further described in detail below with reference to the accompanying drawings.

[0032] This application discloses a pretreatment apparatus for high-performance silicon nitride materials, referring to... Figure 1 , Figure 2 and Figure 3 The apparatus includes a mixing vessel 1, a stirring mechanism 2, and a feed pipe 3. The mixing vessel 1 includes a vessel body 11 and a cover 12. The opening of the vessel body 11 faces vertically upwards. The cover 12 is used to cover the opening of the vessel body 11. The vessel body 11 and the cover 12 are detachably connected by bolts and maintain a seal. The stirring mechanism 2 is installed on the cover 12 and is inserted into the vessel body 11 to stir the raw materials inside. The feed pipe 3 is connected to the vessel body 11 and is used to feed the raw materials into the vessel body 11. A suction pipe 13 is connected to the cover 12. The suction pipe 13 passes through the cover 12 and is sealed to the cover 12. An air valve 14 is installed on the suction pipe 13 to control the opening and closing of the suction pipe 13. A sealing valve is installed on the feed pipe 3 to control the opening and closing of the feed pipe 3. By closing the sealing valve and opening the air valve 14, the operator can draw the pressure inside the mixing vessel 1 to a low pressure state through the suction pipe 13. At this time, closing the air valve 14 and opening the sealing valve allows the raw material in the feed pipe 3 to be poured into the vessel 11 under the action of the pressure difference. This allows the raw material in the feed pipe 3 to completely enter the vessel 11, reducing the raw material residue in the feed pipe 3, ensuring that the ratio of the raw material after mixing meets the expectations, and improving the mixing quality.

[0033] Reference Figure 3 The stirring mechanism 2 includes a motor 21 and a stirring shaft 22. The housing of the motor 21 is fixed to the cover 12, and the stirring shaft 22 passes through and is rotatably connected to the cover 12. The stirring shaft 22 is sealed to the cover 12, and the stirring shaft 22 is coaxially connected to the output shaft of the motor 21. When the cover 12 is connected to the vessel body 11, the stirring shaft 22 is inserted into the vessel body 11, and the motor 21 can drive the stirring shaft 22 to rotate, thereby enabling the stirring shaft 22 to stir the raw materials in the vessel body 11.

[0034] Reference Figure 1 and Figure 2The feed pipe 3 includes an inclined pipe 31 and a vertical pipe 32. The vertical pipe 32 is vertically arranged. One end of the inclined pipe 31 is connected to the lower end of the vertical pipe 32, and the other end is connected to the vessel body 11. The end of the inclined pipe 31 connected to the vertical pipe 32 is higher, and the end connected to the vessel body 11 is lower. The raw material enters the inclined pipe 31 through the vertical pipe 32 and finally enters the vessel body 11. The vessel body 11 is provided with two feed pipes 3, which respectively inject liquid raw material and solid raw material into the vessel body 11. The solid and liquid raw materials enter the vessel body 11 and are stirred to form a silicon nitride suspension.

[0035] Reference Figure 1 The vertical pipe 32 is equipped with an upper sealing valve 33 and a lower sealing valve 34, which are gate valves. When the raw material is injected into the mixing vessel 1 from the vertical pipe 32, the upper sealing valve 33 opens and the lower sealing valve 34 closes. At this time, the raw material is located between the upper sealing valve 33 and the lower sealing valve 34. By closing the upper sealing valve 33 and opening the lower sealing valve 34, the user can allow the raw material to enter the vessel body 11. During the feeding process into the vessel body 11, the probability of the raw material spilling out of the vessel body 11 or flowing into the feed pipe 3 can be reduced, thereby keeping the raw material ratio in the vessel body 11 stable and improving the production quality.

[0036] Reference Figure 1 A flow monitor 35 is installed on the feed pipe 3. Two flow monitors 35 are respectively located on the upper and lower sides of the upper sealing valve 33, with the lower flow monitor 35 positioned between the upper sealing valve 33 and the lower sealing valve 34. When the upper sealing valve 33 and the lower sealing valve 34 are closed, the feed pipe 3 is sealed, and the reading on the flow monitor 35 is zero. When leakage occurs in the upper sealing valve 33 or the lower sealing valve 34, the flow monitor 35 displays a reading, thus serving as an alert.

[0037] Reference Figure 1 A discharge pipe 4 is connected to the bottom of the vessel body 11. The discharge pipe 4 is used to discharge the silicon nitride suspension inside the vessel body 11. A valve body 41 is provided on the discharge pipe 4. The valve body 41 is used to control the opening and closing of the discharge pipe 4.

[0038] The implementation principle of this application embodiment is as follows: By setting an exhaust pipe 13 on the cover 12, when the cover 12 is sealed to the vessel body 11, the inside of the vessel body 11 is a sealed space. By using the exhaust pipe 13 to extract the air from the vessel body 11, the inside of the vessel body 11 is a low-pressure environment. At this time, when the raw material is poured into the vessel body 11, the raw material can be completely put into the vessel body 11, reducing the probability of the raw material remaining in the feed pipe 3. By setting an upper sealing valve 33 and a lower sealing valve 34 on the feed pipe 3, the user can open the upper sealing valve 33 and close the lower sealing valve 34 to allow the raw material to enter between the upper sealing valve 33 and the lower sealing valve 34. At this time, the user can close the upper sealing valve 33 and open the lower sealing valve 34 to allow the raw material to enter the vessel body 11, reducing the probability of the raw material in the vessel body 11 overflowing and adhering to the inner wall of the feed pipe 3.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pretreatment device for high performance silicon nitride material, characterized by: The mixture includes a mixing vessel (1), a stirring mechanism (2), and a feed pipe (3). The mixing vessel (1) includes a vessel body (11) and a cover (12). The vessel body (11) and the cover (12) are detachably connected. The stirring mechanism (2) is installed on the cover (12). The stirring mechanism (2) is used to insert into the vessel body (11) and stir. The feed pipe (3) is connected to the vessel body (11). The cover (12) is provided with an air extraction pipe (13). The air extraction pipe (13) passes through and connects to the cover (12). The air extraction pipe (13) is provided with an air valve (14). The air valve (14) is used to control the opening and closing of the air extraction pipe (13).

2. The pretreatment apparatus for high-performance silicon nitride materials according to claim 1, characterized in that: The stirring mechanism (2) includes a motor (21) and a stirring shaft (22). The housing of the motor (21) is fixed on the cover (12). The stirring shaft (22) passes through the cover (12) and is rotatably connected to the cover (12). The output shaft of the motor (21) is coaxially connected to the stirring shaft (22).

3. The pretreatment apparatus for high-performance silicon nitride materials according to claim 2, characterized in that: The feed pipe (3) includes an inclined pipe (31) and a vertical pipe (32). The vertical pipe (32) is set vertically. One end of the inclined pipe (31) is connected to the lower end of the vertical pipe (32), and the other end is connected to the vessel body (11). The end of the inclined pipe (31) connected to the vertical pipe (32) is higher, and the end connected to the vessel body (11) is lower.

4. The pretreatment apparatus for high-performance silicon nitride materials according to claim 3, characterized in that: Two feed pipes (3) are connected to the vessel body (11).

5. The pretreatment apparatus for high-performance silicon nitride materials according to claim 3, characterized in that: An upper sealing valve (33) and a lower sealing valve (34) are installed on the vertical pipe (32), which are used to seal the vertical pipe (32).

6. The pretreatment apparatus for high-performance silicon nitride materials according to claim 5, characterized in that: A flow monitor (35) is installed on the feed pipe (3).

7. The pretreatment apparatus for high-performance silicon nitride materials according to claim 6, characterized in that: Two flow monitors (35) are provided, and the two flow monitors (35) are respectively located on the upper side and the lower side of the upper sealing valve (33).

8. The pretreatment apparatus for high-performance silicon nitride materials according to claim 1, characterized in that: The bottom of the vessel body (11) is provided with a discharge pipe (4), and a valve body (41) is provided on the discharge pipe (4).

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