Reaction device for preparing erosion-resistant silicon nitride combined silicon carbide for aluminum electrolysis cell

Abstract

The utility model discloses a reaction device for preparing erosion-resistant silicon nitride combined with silicon carbide for an aluminum electrolysis cell, which comprises a shell assembly, a layering assembly is arranged in the shell assembly, the layering assembly comprises an upper frame body, an upper pore plate is arranged in the upper frame body, and the lower end of the upper frame body is connected with a lower frame body in a sliding manner; a lower pore plate is connected to the inner side of the lower frame body, a telescopic hydraulic cylinder is connected to the right end of the lower frame body, a circulating assembly is installed on the right side of the shell assembly, a feeding assembly is installed at the upper end of the shell assembly, and a weighing assembly is installed at the lower end of the layering assembly. Compared with an existing common reaction device, the reaction device for preparing the erosion-resistant silicon nitride combined with the silicon carbide for the aluminum electrolysis cell has a layering function, so that edge equipment carries out layering arrangement on materials, the materials make contact with gas, reaction work is conveniently carried out, and the equipment is provided with an expansion structure; the sealing performance is improved in a gas expansion mode.

Description

Technical Field

[0001] This utility model relates to the field of reaction technology, specifically to a reaction apparatus for preparing corrosion-resistant silicon nitride-bonded silicon carbide for use in aluminum electrolytic cells. Background Technology

[0002] The reaction apparatus for preparing corrosion-resistant silicon nitride-bonded silicon carbide for aluminum electrolysis cells is an industrial device designed specifically for synthesizing high-performance refractory materials in high-temperature and highly corrosive environments. Its core function is to achieve in-situ reaction sintering of SiC particles and Si powder in a nitrogen environment by controlling process parameters such as raw material ratio, reaction temperature, and gas atmosphere, thereby generating SiC composite material with Si2N4 as the bonding phase.

[0003] Most existing reaction devices directly add materials into the equipment and then introduce gas to carry out the reaction. However, this method restricts the contact between materials and gas, which affects the reaction effect and cannot meet people's needs. To address this issue, we will innovate the technology based on the existing reaction devices. Utility Model Content

[0004] The purpose of this invention is to provide a reaction apparatus for preparing corrosion-resistant silicon nitride combined with silicon carbide for aluminum electrolysis cells, so as to solve the problem mentioned in the background art that the general apparatus cannot well meet people's needs.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a reaction device for preparing corrosion-resistant silicon nitride-bonded silicon carbide for aluminum electrolysis cells, comprising a shell assembly, wherein a layered assembly is installed inside the shell assembly, and the layered assembly includes an upper frame, wherein an upper perforated plate is installed inside the upper frame, and a lower frame is slidably connected to the lower end of the upper frame, wherein a lower perforated plate is connected to the inner side of the lower frame, and a telescopic hydraulic cylinder is connected to the right end of the lower frame.

[0006] Furthermore, a circulation component is installed on the right side of the outer shell assembly, a feeding component is installed on the upper end of the outer shell assembly, and a weighing component is installed on the lower end of the layering component.

[0007] Furthermore, the outer casing assembly includes a reaction chamber, and a sealing ring is provided at the upper end of the reaction chamber. An upper cover is connected to the upper end of the sealing ring, and fastening bolts are installed around the upper cover.

[0008] Furthermore, the circulation assembly includes an upper circulation pipe, the lower end of which is connected to a circulation pump, the lower end of which is connected to a lower circulation pipe, and the lower end of which is connected to a feed pipe. A one-way valve is connected to the right side of the feed pipe, and a spray pipe is connected to the left end of the feed pipe.

[0009] Furthermore, the weighing assembly includes a lifting block, and a graphite heating element is connected to the lower end of the lifting block. A weighing sensor is connected to the lower end of the graphite heating element, and a lower support block is provided at the lower end of the weighing sensor.

[0010] Furthermore, the feeding assembly includes a feeding hopper, and an upper connecting frame is installed inside the feeding hopper. The lower end of the upper connecting frame is connected to a first elastic telescopic member, and the lower end of the first elastic telescopic member is connected to a middle connecting frame.

[0011] Furthermore, a conical frame is connected to the outer side of the middle connecting frame, and an expansion pad is connected to the upper surface of the conical frame. A second elastic telescopic member is connected to the lower end of the middle connecting frame, and a lower connecting frame is understood to be located at the lower end of the second elastic telescopic member.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: the device has a layering function, so that the materials are arranged in layers at the edge of the device, so that the materials come into contact with the gas, thereby facilitating the reaction process; the device has an expansion structure, which increases the sealing performance by expanding under the influence of gas.

[0013] 1. This utility model can control the position of the lower frame body by means of a telescopic hydraulic cylinder, thereby controlling the lower and upper perforated plates to form two devices: unfolding and closing. When unfolded, it facilitates the downward movement of materials, and when closed, it intercepts the materials. This allows the materials to form a good layered distribution, which facilitates the contact between the materials and the gas, thereby facilitating the reaction process.

[0014] 2. This utility model utilizes the structure of an expansion pad, which expands under strong pressure, facilitating contact between the expansion pad and the inner wall of the feed hopper, thus enabling the feed hopper to be sealed. Simultaneously, it is equipped with a first elastic telescopic component and a second elastic telescopic component, which, due to their elasticity, create a back-and-forth shaking motion when the conical frame resets, allowing material on the expansion pad to fall off, preventing material from getting stuck in the feed hopper and affecting the airtightness. Attached Figure Description

[0015] Figure 1 This is a frontal cross-sectional view of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the layered component of this utility model;

[0017] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0018] Figure 4 This is an enlarged cross-sectional structural diagram of the weighing component of this utility model.

[0019] In the diagram: 1. Outer shell assembly; 101. Reaction chamber; 102. Sealing ring; 103. Upper cover; 104. Fastening bolts; 2. Layered assembly; 201. Upper frame; 202. Upper perforated plate; 203. Lower frame; 204. Lower perforated plate; 205. Telescopic hydraulic cylinder; 3. Circulation assembly; 301. Upper circulation pipe; 302. Circulation pump; 303. Lower circulation pipe; 304. Feed pipe; 305. Check valve; 306. Discharge pipe; 4. Weighing assembly; 401. Lifting block; 402. Graphite heating element; 403. Weighing sensor; 404. Lower support block; 5. Feeding assembly; 501. Feed hopper; 502. Upper connecting frame; 503. First elastic telescopic component; 504. Middle connecting frame; 505. Conical frame; 506. Expansion pad; 507. Second elastic telescopic component; 508. Lower connecting frame. Detailed Implementation

[0020] like Figure 2 As shown, a reaction apparatus for preparing corrosion-resistant silicon nitride-bonded silicon carbide for aluminum electrolysis cells includes an outer shell assembly 1. A layered assembly 2 is installed inside the outer shell assembly 1. The layered assembly 2 includes an upper frame 201. An upper perforated plate 202 is installed inside the upper frame 201. A lower frame 203 is slidably connected to the lower end of the upper frame 201. A lower perforated plate 204 is connected to the inner side of the lower frame 203. A telescopic hydraulic cylinder 205 is connected to the right end of the lower frame 203.

[0021] The lower frame 203 and the upper frame 201 are slidably connected, so that the lower frame 203 can move easily when the telescopic hydraulic cylinder 205 pushes it. At the same time, the lower perforated plate 204 and the upper perforated plate 202 are the same size, so that the lower perforated plate 204 can be completely hidden under the upper perforated plate 202. The number of upper perforated plates 202 and lower perforated plates 204 can be changed according to the situation during the design. The diameter of the holes on the upper perforated plate 202 and lower perforated plate 204 is smaller than that of the material. The telescopic hydraulic cylinder 205 can withstand high temperature.

[0022] like Figure 1 , Figure 3 and Figure 4 As shown, a circulation component 3 is installed on the right side of the outer casing component 1, and a feeding component 5 is installed on the upper end of the outer casing component 1. A weighing component 4 is installed on the lower end of the layering component 2.

[0023] like Figure 1 As shown, the outer casing assembly 1 includes a reaction chamber 101, and a sealing ring 102 is provided at the upper end of the reaction chamber 101. An upper cover 103 is connected to the upper end of the sealing ring 102, and fastening bolts 104 are installed around the upper cover 103.

[0024] The sealing ring 102 is integrated with the upper cover 103 and embedded in the reaction chamber 101, which facilitates the sealing of the joint between the upper cover 103 and the reaction chamber 101.

[0025] like Figure 1 As shown, the circulation component 3 includes an upper circulation pipe 301, and the lower end of the upper circulation pipe 301 is connected to a circulation pump 302. The lower end of the circulation pump 302 is connected to a lower circulation pipe 303, and the lower end of the lower circulation pipe 303 is connected to a feed pipe 304. A one-way valve 305 is connected to the right side of the feed pipe 304, and a spray pipe 306 is connected to the left end of the feed pipe 304.

[0026] During operation, the circulating pump 302 draws in the gas from the upper circulating pipe 301, and then transports it to the feed pipe 304 through the lower circulating pipe 303. The gas then enters the spray pipe 306 along with the new nitrogen gas input on the right side of the one-way valve 305 and is sprayed out, thus forming a gas circulation and increasing the gas utilization rate. The one-way valve 305 can prevent the circulating gas from flowing back.

[0027] like Figure 3 As shown, the weighing assembly 4 includes a lifting block 401, and a graphite heating element 402 is connected to the lower end of the lifting block 401. A weighing sensor 403 is connected to the lower end of the graphite heating element 402, and a lower support block 404 is provided at the lower end of the weighing sensor 403.

[0028] The graphite heating element 402 can heat the equipment, making it easier for the equipment to reach the required temperature. At the same time, the lower support block 404 supports the weighing sensor 403, making it easier for the weighing sensor 403 to detect the weight of the material on the layered component 2, thus facilitating the operation of the equipment.

[0029] like Figure 4 As shown, the feeding assembly 5 includes a feeding hopper 501, and an upper connecting frame 502 is installed inside the feeding hopper 501. The lower end of the upper connecting frame 502 is connected to a first elastic telescopic member 503, and the lower end of the first elastic telescopic member 503 is connected to a middle connecting frame 504. The outer side of the middle connecting frame 504 is connected to a conical frame 505, and an expansion pad 506 is connected to the upper surface of the conical frame 505. The lower end of the middle connecting frame 504 is connected to a second elastic telescopic member 507, and the lower end of the second elastic telescopic member 507 is connected to a lower connecting frame 508.

[0030] The upper connecting frame 502 connects to the upper part of the first elastic telescopic member 503, the lower connecting frame 508 connects to the lower part of the second elastic telescopic member 507, and the middle connecting frame 504 connects the second elastic telescopic member 507 and the first elastic telescopic member 503 together. This allows the tapered frame 505 to vibrate up and down by utilizing the elasticity of the first elastic telescopic member 503 and the second elastic telescopic member 507. The tapered frame 505 is covered with an expansion pad 506, which ensures a good seal when the tapered frame 505 contacts the feed hopper 501. At the same time, the expansion pad 506 will expand to a certain extent under the influence of air pressure, which facilitates a tight contact between the expansion pad 506 and the feed hopper 501 and increases the sealing performance.

[0031] Working principle: When using this reaction device for preparing corrosion-resistant silicon nitride and silicon carbide for aluminum electrolysis cells, the reaction chamber 101 and the upper cover 103 are first connected as a whole by fastening bolts 104. Then, materials are added through the feed hopper 501. During material addition, a downward pressing rod on the material connection structure presses down on the conical frame 505, causing it to move down and open to facilitate material entry. During the material entry process, the weighing sensor 403 weighs the material as it enters and exits. When there is enough material on one layer component 2, the upper layer component 2 will extend and retract. The hydraulic cylinder 205 pushes the lower frame 203, causing the layering component 2 to close, thus layering the material until all the material is added. Then, the material adding structure stops adding material and moves away. At this time, the conical frame 505 loses its downward thrust. The elasticity of the first elastic telescopic member 503 and the second elastic telescopic member 507 will pull the conical frame 505, causing it to shake up and down, making it easier for all the material to fall into the equipment. Then, gas is introduced into the equipment through the feed pipe 304, thereby activating the graphite heating element 402 and causing the reaction to take place inside the equipment.

Claims

1. A reaction apparatus for preparing corrosion-resistant silicon nitride-bonded silicon carbide for aluminum electrolytic cells, characterized in that, The device includes an outer shell assembly (1), inside which a layered assembly (2) is installed. The layered assembly (2) includes an upper frame (201), inside which an upper perforated plate (202) is installed. A lower frame (203) is slidably connected to the lower end of the upper frame (201). A lower perforated plate (204) is connected to the inner side of the lower frame (203). A telescopic hydraulic cylinder (205) is connected to the right end of the lower frame (203).

2. The reaction apparatus for preparing corrosion-resistant silicon nitride-bonded silicon carbide for aluminum electrolytic cells according to claim 1, characterized in that, A circulation component (3) is installed on the right side of the outer shell assembly (1), and a feeding component (5) is installed on the upper end of the outer shell assembly (1). A weighing component (4) is installed on the lower end of the layering component (2).

3. The reaction apparatus for preparing corrosion-resistant silicon nitride-bonded silicon carbide for aluminum electrolytic cells according to claim 1, characterized in that, The outer shell assembly (1) includes a reaction chamber (101), and a sealing ring (102) is provided at the upper end of the reaction chamber (101). The upper end of the sealing ring (102) is connected to an upper cover (103), and fastening bolts (104) are installed around the upper cover (103).

4. The reaction apparatus for preparing corrosion-resistant silicon nitride-bonded silicon carbide for aluminum electrolytic cells according to claim 2, characterized in that, The circulation assembly (3) includes an upper circulation pipe (301), and the lower end of the upper circulation pipe (301) is connected to a circulation pump (302). The lower end of the circulation pump (302) is connected to a lower circulation pipe (303), and the lower end of the lower circulation pipe (303) is connected to a feed pipe (304). The right side of the feed pipe (304) is connected to a check valve (305), and the left end of the feed pipe (304) is connected to a spray pipe (306).

5. The reaction apparatus for preparing corrosion-resistant silicon nitride-bonded silicon carbide for aluminum electrolytic cells according to claim 2, characterized in that, The weighing assembly (4) includes a lifting block (401), and a graphite heating element (402) is connected to the lower end of the lifting block (401). A weighing sensor (403) is connected to the lower end of the graphite heating element (402), and a lower support block (404) is provided at the lower end of the weighing sensor (403).

6. The reaction apparatus for preparing corrosion-resistant silicon nitride-bonded silicon carbide for aluminum electrolytic cells according to claim 2, characterized in that, The feeding assembly (5) includes a feeding hopper (501), and an upper connecting frame (502) is installed inside the feeding hopper (501). The lower end of the upper connecting frame (502) is connected to a first elastic telescopic member (503), and the lower end of the first elastic telescopic member (503) is connected to a middle connecting frame (504).

7. The reaction apparatus for preparing corrosion-resistant silicon nitride-bonded silicon carbide for aluminum electrolytic cells according to claim 6, characterized in that, A conical frame (505) is connected to the outer side of the middle connecting frame (504), and an expansion pad (506) is connected to the upper surface of the conical frame (505). A second elastic telescopic member (507) is connected to the lower end of the middle connecting frame (504), and a lower connecting frame (508) is connected to the lower end of the second elastic telescopic member (507).

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