Purification device for silicon nitride powder

Abstract

The utility model relates to a purification device for silicon nitride powder, which is characterized in that the silicon nitride powder can be put into a purification tank, then the silicon nitride powder falls down along a spirally arranged bearing plate under the driving of a vibrating piece, and the passing silicon nitride powder is purified by an electromagnet while the silicon nitride powder falls down. After the electromagnet adsorbs to a certain degree of attached impurities, the silicon nitride powder can be stopped from being fed, then the iron discharging mechanism is operated, the electromagnet enters the cavity, the electromagnet is powered off, the attached impurities on the outer surface of the electromagnet are separated, and then the electromagnet is driven to reset; according to the silicon nitride powder purification device, the mounting opening is blocked by the electromagnet, and the silicon nitride powder is continuously purified, so that the silicon nitride powder can be better purified, the iron impurities in the silicon nitride powder are more thoroughly removed, and the influence of the iron impurities on the subsequent processing of the silicon nitride powder is avoided.

Description

Technical Field

[0001] This utility model relates to the field of silicon nitride processing technology, and in particular to a purification device for silicon nitride powder. Background Technology

[0002] Silicon nitride powder is a powder material composed of silicon nitride (Si3N4). It has good high temperature resistance, wear resistance and corrosion resistance, and is widely used in ceramics, electronics, aerospace, optics and other fields.

[0003] When using silicon nitride powder to produce silicon nitride products, the presence of iron impurities in the powder can lead to the formation of ferrosilicon (also known as ferrosilicon alloy) at high temperatures. Ferrosilicon is a low-melting-point compound that can significantly impact the performance of silicon nitride products; therefore, purification equipment is needed to purify the silicon nitride powder.

[0004] However, traditional silicon nitride powder purification equipment often fails to remove iron impurities from silicon nitride powder completely, leaving a small amount of iron impurities in the silicon nitride powder. This results in poor purification effect and deterioration in the molding quality of silicon nitride products. Utility Model Content

[0005] (1) Technical issues to be resolved

[0006] To address the aforementioned problems in the prior art, this utility model provides a purification device for silicon nitride powder, which can better purify silicon nitride powder, remove iron impurities from the silicon nitride powder more thoroughly, and prevent iron impurities from affecting subsequent processing of silicon nitride powder.

[0007] (2) Technical solution

[0008] In order to achieve the above-mentioned purpose, the main technical solutions adopted by this utility model include:

[0009] A purification device for silicon nitride powder includes a purification tank, an iron collecting cylinder, purification components, and an iron discharge mechanism. The iron collecting cylinder is disposed inside the purification tank. Several purification components are spirally arranged around the outer surface of the iron collecting cylinder from top to bottom. The iron discharge mechanism is installed on the iron collecting cylinder. All purification components are connected to the iron discharge mechanism.

[0010] The iron collecting cylinder is equipped with a vibrating element;

[0011] The purification component includes a receiving plate and an electromagnet. The receiving plate is fixedly connected to the outer surface of the iron collecting cylinder. The receiving plate has a cavity inside, which is connected to the iron collecting cylinder. The upper surface of the receiving plate has an installation port, and the electromagnet is movably connected to the installation port. The electromagnet is connected to the iron discharge mechanism.

[0012] Furthermore, the outer surface of the iron collecting cylinder is provided with several iron discharge ports spirally arranged from top to bottom, one of the receiving plates is fixedly connected to one of the iron discharge ports, and the cavity is connected to the iron collecting cylinder through the iron discharge ports.

[0013] Furthermore, the receiving plates are arranged in a stepped spiral pattern.

[0014] Furthermore, the purification tank is provided with a feed inlet at the top, and a feed hopper is fixedly connected to the feed inlet.

[0015] Furthermore, the bottom of the purification tank is provided with a material collection trough, the outer surface of the material collection trough is provided with a discharge port, and a sealing plug is provided on the discharge port.

[0016] Furthermore, the iron discharge mechanism includes a linear drive component, a lifting rod, connecting rods, and an exhaust assembly. The linear drive component is installed on the top of the iron collection cylinder and is linearly driven connected to the lifting rod. The lifting rod is located inside the iron collection cylinder and has several connecting rods. One connecting rod is connected to the lower surface of an electromagnet. The exhaust assembly is installed at the bottom of the iron collection cylinder.

[0017] Furthermore, the exhaust assembly includes a collection bucket, a mounting plate, a filter element, and an exhaust fan. The top of the collection bucket is fixedly connected to the bottom of the iron collection cylinder through the mounting plate. The filter element is provided at the bottom of the collection bucket, and the exhaust fan is connected to the bottom of the collection bucket through the filter element.

[0018] Furthermore, it also includes a support frame, which is fixedly connected to the outer surface of the purification tank.

[0019] Furthermore, it also includes a controller, which is electrically connected to both the purification component and the iron removal mechanism.

[0020] (3) Beneficial effects

[0021] The beneficial effects of this invention are as follows: In the actual processing of silicon nitride powder, when purification of the silicon nitride powder is required, the silicon nitride powder can be put into the purification tank. Subsequently, the silicon nitride powder falls along the spirally arranged receiving plate under the drive of the vibrating component. At the same time as the silicon nitride powder falls, the electromagnet purifies the silicon nitride powder, so that the iron impurities in the silicon nitride powder are attracted by the electromagnet. After the electromagnet has attracted a certain amount of impurities, the feeding of silicon nitride powder can be stopped. Then, the iron removal mechanism is activated, so that the electromagnet enters the cavity and the electromagnet is de-energized, so that the impurities on the outer surface of the electromagnet are detached. Then, the electromagnet is reset, so that the electromagnet seals the installation port and continues to purify the silicon nitride powder. This can better purify the silicon nitride powder, remove the iron impurities in the silicon nitride powder more thoroughly, and avoid the iron impurities affecting the subsequent processing of the silicon nitride powder. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the silicon nitride powder purification device according to an embodiment of the present invention.

[0023] Figure 2 This is a front view of the overall structure of the silicon nitride powder purification device according to an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the purification component structure in the silicon nitride powder purification device according to an embodiment of the present invention.

[0025] Figure 4 This is a cross-sectional view of the overall structure of the silicon nitride powder purification device according to an embodiment of the present invention.

[0026] [Explanation of Labels in the Attached Image]

[0027] 1. Feed hopper; 2. Purification tank; 3. Support frame; 4. Collection trough; 5. Exhaust fan; 6. Sealing plug; 7. Top cover; 8. Linear drive component; 9. Collection bucket; 10. Receiving plate; 11. Electromagnet; 12. Iron collection cylinder; 13. Filter element; 14. Connecting rod; 15. Lifting rod; 16. Vibrating component. Detailed Implementation

[0028] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0029] Please refer to Figures 1 to 4As shown, a silicon nitride powder purification device of the present invention includes a purification tank 2, an iron collecting cylinder 12, purification components and an iron discharge mechanism. The iron collecting cylinder 12 is disposed inside the purification tank 2. A plurality of purification components are spirally arranged around the outer surface of the iron collecting cylinder 12 from top to bottom. The iron discharge mechanism is installed on the iron collecting cylinder 12. All purification components are connected to the iron discharge mechanism.

[0030] The iron collecting cylinder 12 is equipped with a vibrating element 16;

[0031] The purification component includes a receiving plate 10 and an electromagnet 11. The receiving plate 10 is fixedly connected to the outer surface of the iron collecting cylinder 12. The receiving plate 10 has a cavity inside, which is connected to the iron collecting cylinder 12. The upper surface of the receiving plate 10 has an installation port, and the electromagnet 11 is movably connected to the installation port. The electromagnet 11 is connected to the iron discharge mechanism.

[0032] The working principle of this utility model is as follows: In the actual silicon nitride powder processing, when it is necessary to purify the silicon nitride powder, the silicon nitride powder can be put into the purification tank 2. Then, the silicon nitride powder falls down along the spirally arranged receiving plate 10 under the drive of the vibrating component 16. At the same time as the silicon nitride powder falls, the electromagnet 11 purifies the silicon nitride powder that passes through it, so that the iron impurities in the silicon nitride powder are adsorbed by the electromagnet 11. After the electromagnet 11 adsorbs a certain amount of impurities, the feeding of silicon nitride powder can be stopped. Then, the iron removal mechanism is operated to allow the electromagnet 11 to enter the cavity and the power to the electromagnet 11 is turned off, so that the impurities on the outer surface of the electromagnet 11 are removed. Then, the electromagnet 11 is driven to reset, so that the electromagnet 11 seals the installation port and continues to purify the silicon nitride powder.

[0033] Furthermore, the outer surface of the iron collecting cylinder 12 is spirally arranged with several iron discharge ports from top to bottom, and a receiving plate 10 is fixedly connected to one of the iron discharge ports. The cavity is connected to the iron collecting cylinder 12 through the iron discharge ports.

[0034] As can be seen from the above description, it is beneficial for iron impurities to enter the iron collecting cylinder 12 through the cavity and iron discharge port when they are discharged.

[0035] Furthermore, the receiving plate 10 is arranged in a stepped spiral pattern.

[0036] As can be seen from the above description, it is beneficial for silicon nitride powder to slide down step by step through the stepped spirally arranged receiving plates 10.

[0037] Furthermore, the top of the purification tank 2 is provided with a feed inlet, and a feed hopper 1 is fixedly connected to the feed inlet.

[0038] As can be seen from the above description, it is beneficial for silicon nitride powder to be poured into the purification tank 2 through the feed inlet and feed hopper 1.

[0039] Furthermore, the bottom of the purification tank 2 is provided with a material collection trough 4, the outer surface of the material collection trough 4 is provided with a discharge port, and a sealing plug 6 is provided on the discharge port.

[0040] As can be seen from the above description, it is beneficial for the purified silicon nitride powder to be concentrated in the collection tank 4 and discharged through the discharge port.

[0041] Furthermore, the iron discharge mechanism includes a linear drive component 8, a lifting rod 15, a connecting rod 14, and an exhaust assembly. The linear drive component 8 is installed on the top of the iron collection cylinder 12 and is linearly driven connected to the lifting rod 15. The lifting rod 15 is disposed inside the iron collection cylinder 12, and several connecting rods 14 are provided on the lifting rod 15. One connecting rod 14 is connected to the lower surface of an electromagnet 11, and the exhaust assembly is installed at the bottom of the iron collection cylinder 12.

[0042] As can be seen from the above description, when it is necessary to remove iron from electromagnet 11, the input of silicon nitride powder can be stopped, and then the linear drive 8 is operated to drive the lifting rod 15 down. Then the lifting rod 15 drives electromagnet 11 into the cavity through the connecting rod 14, and the electromagnet 11 is de-energized so that it stops adsorbing iron impurities. Then the exhaust component is operated to exhaust the air in the iron collecting cylinder 12. Then the iron collecting cylinder 12 sucks the iron impurities in the cavity into the iron collecting cylinder 12 through the iron discharge port.

[0043] Furthermore, the exhaust assembly includes a collection bucket 9, a mounting plate, a filter element 13, and an exhaust fan 5. The top of the collection bucket 9 is fixedly connected to the bottom of the iron collection cylinder 12 through the mounting plate. The bottom of the collection bucket 9 is provided with the filter element 13, and the exhaust fan 5 is connected to the bottom of the collection bucket 9 through the filter element 13.

[0044] As can be seen from the above description, when it is necessary to collect iron impurities, the exhaust fan 5 can be operated to discharge the air in the iron collection cylinder 12 through the collection bucket 9 and draw the iron impurities into the iron collection cylinder 12. Subsequently, the iron impurities fall into the collection bucket 9 for collection. At the same time, the exhaust air is filtered through the filter element 13 to prevent impurities from affecting the operation of the exhaust fan 5.

[0045] Furthermore, it also includes a support frame 3, which is fixedly connected to the outer surface of the purification tank 2.

[0046] As can be seen from the above description, it is beneficial to support the entire device through the support frame 3.

[0047] Furthermore, it also includes a controller, which is electrically connected to both the purification component and the iron removal mechanism.

[0048] As can be seen from the above description, it makes it more convenient for users to control the overall device.

[0049] Example 1

[0050] Please refer to Figures 1 to 4 A purification device for silicon nitride powder includes a purification tank 2, an iron collecting cylinder 12, purification components, and an iron discharge mechanism. The iron collecting cylinder 12 is disposed inside the purification tank 2. Several purification components are spirally arranged around the outer surface of the iron collecting cylinder 12 from top to bottom. The iron discharge mechanism is installed on the iron collecting cylinder 12. All purification components are connected to the iron discharge mechanism.

[0051] The iron collecting cylinder 12 is equipped with a vibrating element 16;

[0052] The vibrating element 16 is a vibrating motor, and the vibrating element 16 is installed inside the iron collecting cylinder 12 by bolts;

[0053] The purification component includes a receiving plate 10 and an electromagnet 11. The receiving plate 10 is fixedly connected to the outer surface of the iron collecting cylinder 12 by welding. The receiving plate 10 has a cavity inside, which is connected to the iron collecting cylinder 12. The upper surface of the receiving plate 10 has an installation port, and the electromagnet 11 is movably connected to the installation port. The electromagnet 11 is connected to the iron discharge mechanism.

[0054] The outer surface of the iron collecting cylinder 12 is provided with a plurality of iron discharge ports spirally arranged from top to bottom. A receiving plate 10 is fixedly connected to one of the iron discharge ports by welding. The cavity is connected to the iron collecting cylinder 12 through the iron discharge ports.

[0055] The receiving plates 10 are arranged in a stepped spiral pattern;

[0056] The purification tank 2 is provided with a feed inlet at the top, and a feed hopper 1 is fixedly connected to the feed inlet by welding.

[0057] The bottom of the purification tank 2 is provided with a material collection trough 4, the outer surface of the material collection trough 4 is provided with a discharge port, and a sealing plug 6 is provided on the discharge port;

[0058] The iron discharge mechanism includes a linear drive component 8, a lifting rod 15, a connecting rod 14, and an exhaust assembly. The linear drive component 8 is installed on the top of the iron collection cylinder 12 and is linearly driven connected to the lifting rod 15. The lifting rod 15 is disposed inside the iron collection cylinder 12 and is provided with a plurality of connecting rods 14. One connecting rod 14 is connected to the lower surface of an electromagnet 11. The exhaust assembly is installed at the bottom of the iron collection cylinder 12.

[0059] The linear drive component 8 is a telescopic motor;

[0060] The top of the purification tank 2 is bolted to a top cover 7, the top of the iron collecting cylinder 12 is welded to the lower surface of the top cover 7, and the linear drive component 8 is bolted to the upper surface of the top cover 7.

[0061] The exhaust assembly includes a collection bucket 9, a mounting plate, a filter element 13, and an exhaust fan 5. The top of the collection bucket 9 is fixedly connected to the bottom of the iron collection cylinder 12 through the mounting plate. The filter element 13 is provided at the bottom of the collection bucket 9, and the exhaust fan 5 is connected to the bottom of the collection bucket 9 through the filter element 13.

[0062] The mounting plate is connected to the bottom of the iron collecting cylinder 12 by bolts;

[0063] It also includes a support frame 3, which is fixedly connected to the outer surface of the purification tank 2 by welding;

[0064] It also includes a controller, which is electrically connected to both the purification component and the iron removal mechanism;

[0065] The controller is model DATA-7311, and it is electrically connected to the exhaust fan 5, the electromagnet 11, and the linear drive 8.

[0066] The above describes the basic principles, main features, and advantages of this utility model. All standard parts used in this utility model can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods for each part all adopt conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, and the circuit connections adopt conventional connection methods in the prior art, which will not be detailed here.

[0067] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A purification apparatus for silicon nitride powder, characterized in that: The device includes a purification tank, an iron collecting cylinder, purification components, and an iron discharge mechanism. The iron collecting cylinder is located inside the purification tank. Several purification components are spirally arranged around the outer surface of the iron collecting cylinder from top to bottom. The iron discharge mechanism is installed on the iron collecting cylinder, and all purification components are connected to the iron discharge mechanism. The iron collecting cylinder is equipped with a vibrating element; The purification component includes a receiving plate and an electromagnet. The receiving plate is fixedly connected to the outer surface of the iron collecting cylinder. The receiving plate has a cavity inside, which is connected to the iron collecting cylinder. The upper surface of the receiving plate has an installation port, and the electromagnet is movably connected to the installation port. The electromagnet is connected to the iron discharge mechanism.

2. The purification apparatus for silicon nitride powder as described in claim 1, characterized in that: The outer surface of the iron collecting cylinder is provided with several iron discharge ports spirally arranged from top to bottom. One of the receiving plates is fixedly connected to one of the iron discharge ports, and the cavity is connected to the iron collecting cylinder through the iron discharge ports.

3. The purification apparatus for silicon nitride powder as described in claim 1, characterized in that: The receiving plates are arranged in a stepped spiral pattern.

4. The purification apparatus for silicon nitride powder as described in claim 1, characterized in that: The purification tank is provided with a feed inlet at the top, and a feed hopper is fixedly connected to the feed inlet.

5. The purification apparatus for silicon nitride powder as described in claim 4, characterized in that: The bottom of the purification tank is provided with a material collection trough, the outer surface of the material collection trough is provided with a discharge port, and a sealing plug is provided on the discharge port.

6. The purification apparatus for silicon nitride powder as described in claim 1, characterized in that: The iron discharge mechanism includes a linear drive, a lifting rod, connecting rods, and an exhaust assembly. The linear drive is installed on the top of the iron collection cylinder and is linearly connected to the lifting rod. The lifting rod is located inside the iron collection cylinder and has several connecting rods. One connecting rod is connected to the lower surface of an electromagnet. The exhaust assembly is installed at the bottom of the iron collection cylinder.

7. The purification apparatus for silicon nitride powder as described in claim 6, characterized in that: The exhaust assembly includes a collection bucket, a mounting plate, a filter element, and an exhaust fan. The top of the collection bucket is fixedly connected to the bottom of the iron collection cylinder through the mounting plate. The filter element is provided at the bottom of the collection bucket, and the exhaust fan is connected to the bottom of the collection bucket through the filter element.

8. The purification apparatus for silicon nitride powder as described in claim 1, characterized in that: It also includes a support frame, which is fixedly connected to the outer surface of the purification tank.

9. The purification apparatus for silicon nitride powder as described in claim 1, characterized in that: It also includes a controller, which is electrically connected to the purification component and the iron removal mechanism, respectively.

Images