Automatic feeding device for small-surface fluoride salt of electrolytic cell

Abstract

The utility model relates to an automatic feeding device for small-surface fluoride salt of an electrolytic tank, which belongs to the technical field of electrolysis and comprises a steel pipe body, a feeding cylinder is arranged at the top of the steel pipe body, an air inlet cylinder is arranged on one side of the steel pipe body, a discharging cylinder is arranged on the other side of the steel pipe body, and a filter cylinder is arranged in the steel pipe body. The problems that traditional equipment adopts a hopper for feeding, the feeding period is long, feeding wastes time and labor, and a feeding opening is prone to being damaged due to overweight of the hopper are solved.

Description

Technical Field

[0001] The utility model relates to an automatic feeding device for fluoride salts on the small surface of an electrolytic cell, belonging to the field of medical auxiliary equipment. Background Art

[0002] The automatic feeding device for fluoride salts on the small surface of an electrolytic cell mainly relates to the fluoride salt addition process in the aluminum electrolysis industry. During the aluminum electrolysis production process, fluoride salts, as important electrolysis additives, play a key role in improving electrolysis efficiency, optimizing the working conditions of the electrolytic cell, and extending the service life of the electrolytic cell.

[0003] According to the feeding device applied to an electrolytic cell disclosed in Chinese invention patent CN106927274A, the present invention discloses a feeding device applied to an electrolytic cell, including a feeding hopper. The lower end of the feeding hopper is respectively formed with a bottom outlet and a side outlet. A horizontal output pipe is inserted into the side outlet of the feeding hopper. A vertical feeding pipe is bent and formed on the output pipe. A horizontal rotating shaft is inserted into the output pipe. One end of the rotating shaft is hinged to the feeding pipe through a bearing seat, and the other end is fixedly connected to the rotating shaft of the motor. The motor is fixed on the outer wall of the feeding hopper. The rotating shaft is formed with a spiral conveying sheet; a bottom cover is inserted into the bottom outlet of the feeding hopper. One side of the bottom cover is formed with a hinge support and is hinged to the feeding hopper through the hinge support, and the other side is fixed to the output pipe through a bolt assembly; the present invention proposes a feeding device with a new structure, which can realize continuous feeding into the electrolytic cell, and at the same time, when the feeding device is repaired, it can avoid all the raw materials in the device from falling into the electrolytic cell.

[0004] At present, for the fluoride salt feeding on the large surface of the operating electrolytic cell, a special tanker is used for feeding, while for the small surface, a multi-functional overhead crane is used to hoist a hopper for feeding operation. The single-tank feeding frequency is about thirty days each time. Each feeding is time-consuming and laborious, and the feeding port is easily damaged due to the heavy hopper. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is that the traditional equipment uses a hopper for feeding, with a long feeding cycle, time-consuming and laborious feeding, and the feeding port is easily damaged due to the heavy hopper.

[0006] An automatic feeding device for fluoride salts on the small surface of an electrolytic cell according to the utility model includes a steel pipe main body. The top of the steel pipe main body is provided with a feeding cylinder, one side of the steel pipe main body is provided with an air inlet cylinder, the other side of the steel pipe main body is provided with a discharge cylinder, and a filter cylinder is arranged inside the steel pipe main body.

[0007] The steel pipe main body provides a feeding structure. The feeding cylinder feeds the steel pipe main body. The air inlet cylinder provides compressed air for the steel pipe main body. The fluoride salts enter the filter cylinder. The compressed air mixed with the fluoride salts is discharged through the discharge cylinder. The filter cylinder filters out the fluoride salt particles with larger particles.

[0008] Further, an anti-backflow structure is provided on the steel pipe main body. The anti-backflow structure is located at the air outlet end of the air inlet cylinder. The anti-backflow structure includes a gas contraction and acceleration cylinder and a gas amplification cylinder. Both the gas contraction and acceleration cylinder and the gas amplification cylinder are conical, and the cones of the gas contraction and acceleration cylinder and the gas amplification cylinder are arranged back to back.

[0009] The anti-backflow structure is to prevent compressed air mixed with fluoride salt from flowing back during power failure, causing damage to the air compressor. The gas contraction cylinder and the gas amplification cylinder cooperate with each other and are arranged back to back with cones, which can ensure that the discharged gas accurately enters the filter cylinder. By limiting the inner wall cone of the gas amplification cylinder, it is ensured that the amplified compressed gas completely enters the filter cylinder without causing waste of compressed air.

[0010] Further, the gas amplification cylinder is provided with air flow filling holes.

[0011] The air flow filling holes can supplement the compressed air being amplified, and can increase the air flow after amplification under the drive of the air flow.

[0012] Further, the value range of the inclination angle a of the inner wall of the gas contraction and acceleration cylinder is 20° to 22°;

[0013] The value range of the inclination angle b of the inner wall of the gas amplification cylinder is 23° to 25°.

[0014] Preferably, the inclination angle a of the inner wall of the gas contraction and acceleration cylinder can be 20°, 21° or 22°;

[0015] Preferably, the inclination angle b of the inner wall of the gas amplification cylinder can be 23°, 24° or 25°.

[0016] Further, the filter cylinder is located at the air inlet end of the discharge cylinder, and the inner diameter of the filter cylinder is larger than that of the discharge cylinder;

[0017] A feed hole is opened near the top of the filter cylinder close to the feed cylinder;

[0018] Discharge holes are evenly opened on the side of the filter cylinder close to the discharge cylinder.

[0019] The filter cylinder is used for screening larger fluoride salt particles. The larger inner diameter of the filter cylinder than that of the discharge cylinder can ensure that larger fluoride salt particles do not enter the equipment through the air inlet cylinder;

[0020] The feed hole provides space for the fluoride salt material to enter the filter cylinder;

[0021] The discharge holes provide space for the fluoride salt material to enter the steel pipe main body.

[0022] Further, a discharge collection cavity is provided on one side of the steel pipe main body, and the discharge collection cavity is communicated with the steel pipe main body.

[0023] The discharge collection cavity provides for collecting larger filtered fluoride salt particles.

[0024] Further, an aggregate pipe is provided at the bottom of the blanking collection cavity.

[0025] The aggregate pipe is used to discharge the fluoride salt particles in the blanking collection cavity.

[0026] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0027] For the automatic fluoride salt feeding device for the small surface of the electrolytic cell described in the present utility model, a feeding device powered by compressed air is fabricated. Using the pressure difference, the material is directly pumped from the ground into the fluoride salt feeding port, replacing the operation of hoisting the hopper by a multi-functional overhead crane. This saves time and effort, reduces the usage frequency of the multi-functional overhead crane, reduces the occurrence of failures, reduces the maintenance frequency of maintenance personnel, and improves work efficiency. The steel pipe main body provides the structure for feeding. The feeding cylinder feeds the material into the steel pipe main body. The air inlet cylinder provides compressed air for the steel pipe main body. The fluoride salt enters the filter cylinder, and the compressed air mixed with the fluoride salt is discharged through the discharge cylinder. The filter cylinder filters out the fluoride salt particles with larger particles, solving the problems of the traditional equipment using a hopper for feeding, having a long feeding cycle, being time-consuming and laborious, and being prone to damaging the feeding port due to the excessive weight of the hopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a perspective view of an embodiment of the present utility model;

[0029] Figure 2 is a left view of an embodiment of the present utility model;

[0030] Figure 3 is Figure 2 a cross-sectional view taken along line A-A in

[0031] In the figure: 1. Steel pipe main body; 2. Feeding cylinder; 3. Air inlet cylinder; 4. Discharge cylinder; 5. Filter cylinder;

[0032] 11. Anti-backflow structure; 12. Blanking collection cavity;

[0033] 111. Gas contraction and acceleration cylinder; 112. Gas amplification cylinder;

[0034] 1111. Air flow filling hole;

[0035] 121. Aggregate pipe;

[0036] 51. Feeding hole; 52. Blanking hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] Embodiment 1

[0038] As Figures 1 to 3As shown in the figure, an automatic feeding device for small-surface fluorinated salts of an electrolytic cell according to the present utility model includes a steel pipe main body 1. A feeding cylinder 2 is provided at the top of the steel pipe main body 1. An air inlet cylinder 3 is provided on one side of the steel pipe main body 1. A discharge cylinder 4 is provided on the other side of the steel pipe main body 1. A filter cylinder 5 is arranged inside the steel pipe main body 1.

[0039] The steel pipe main body 1 provides a feeding structure. The feeding cylinder 2 adds materials to the steel pipe main body 1. The air inlet cylinder 3 provides compressed air for the steel pipe main body 1. The fluorinated salts enter the filter cylinder 5, and the compressed air mixed with the fluorinated salts is discharged through the discharge cylinder 4. The filter cylinder 5 filters out larger fluorinated salt particles.

[0040] As Figure 3 shown, as an optimization, the steel pipe main body 1 is provided with an anti-backflow structure 11. The anti-backflow structure 11 is located at the air outlet end of the air inlet cylinder 3. The anti-backflow structure 11 includes a gas contraction and acceleration cylinder 111 and a gas amplification cylinder 112. Both the gas contraction and acceleration cylinder 111 and the gas amplification cylinder 112 are conical, and the cones of the gas contraction and acceleration cylinder 111 and the gas amplification cylinder 112 are arranged back to back.

[0041] The anti-backflow structure 11 is to prevent the compressed air mixed with the fluorinated salts from flowing back during a power outage, causing damage to the air compressor. The gas contraction cylinder and the gas amplification cylinder 112 cooperate with each other and are arranged back to back with cones, which can ensure that the discharged gas accurately enters the filter cylinder 5. By limiting the inner wall cone of the gas amplification cylinder 112, it is ensured that the amplified compressed gas completely enters the filter cylinder 5 without causing waste of compressed air.

[0042] As Figure 3 shown, as an optimization, the gas amplification cylinder 112 is provided with an air flow filling hole 1111.

[0043] The air flow filling hole 1111 can supplement the compressed air being amplified, and can increase the air flow after amplification under the drive of the air flow.

[0044] As Figure 3 shown, as an optimization, the included angle a of the inner wall of the gas contraction and acceleration cylinder 111 ranges from 20° to 22°;

[0045] The included angle b of the inner wall of the gas amplification cylinder 112 ranges from 23° to 25°.

[0046] Preferably, the included angle a of the inner wall of the gas contraction and acceleration cylinder 111 can be 20°, 21° or 22°;

[0047] Preferably, the included angle b of the inner wall of the gas amplification cylinder 112 can be 23°, 24° or 25°.

[0048] As Figure 3As shown, as an optimization, the filter cartridge 5 is located at the air inlet end of the discharge tube 4, and the inner diameter of the filter cartridge 5 is larger than that of the discharge tube 4;

[0049] A feed hole 51 is provided near the top of the filter cartridge 5 close to the feed tube 2;

[0050] Falling holes 52 are evenly provided on the side of the filter cartridge 5 close to the discharge tube 4.

[0051] The filter cartridge 5 is used for screening larger fluoride salt particles. The larger inner diameter of the filter cartridge 5 than that of the discharge tube 4 can ensure that larger fluoride salt particles will not enter the equipment through the intake tube 3;

[0052] The feed hole 51 provides a space for the fluoride salt material to enter the filter cartridge 5;

[0053] The falling holes 52 provide a space for the fluoride salt material to enter the steel pipe main body 1.

[0054] As Figure 3 shown, as an optimization, a falling material collection cavity 12 is provided on one side of the steel pipe main body 1, and the falling material collection cavity 12 is communicated with the steel pipe main body 1.

[0055] The falling material collection cavity 12 provides for collecting the larger filtered fluoride salt particles.

[0056] As Figure 3 shown, as an optimization, an aggregate pipe 121 is provided at the bottom of the falling material collection cavity 12.

[0057] The aggregate pipe 121 is used to discharge the fluoride salt particles in the falling material collection cavity 12.

[0058] Working process or working principle:

[0059] The fluoride salt particles enter the filter cartridge 5 through the feed hole 51 from the feed tube 2. The compressed air is accelerated through the gas contraction and acceleration cylinder 111, and the flow rate is amplified and the injection angle is amplified through the gas amplification cylinder 112 and the air flow filling hole 1111. The compressed air carries the smaller fluoride salt particles and discharges them through the discharge tube 4. The larger particles of fluoride salt enter the steel pipe main body 1 through the falling holes 52, enter the falling material collection cavity 12 along with the compressed air, and are then discharged through the aggregate pipe 121.

[0060] In the present utility model, the description of the direction and relative position relationship of the structure, such as the description of front, back, left, right, up, and down, does not constitute a limitation to the present utility model, but is only for the convenience of description.

Claims

1. An automatic feeding device for fluoride salts on the small surface of an electrolytic cell, characterized in that, It includes a steel pipe main body (1). At the top of the steel pipe main body (1), there is a feeding cylinder (2). On one side of the steel pipe main body (1), there is an air inlet cylinder (3). On the other side of the steel pipe main body (1), there is a discharge cylinder (4). Inside the steel pipe main body (1), there is a filter cylinder (5). The steel pipe main body (1) is provided with an anti-backflow structure (11). The anti-backflow structure (11) is located at the air outlet end of the air inlet cylinder (3). The anti-backflow structure (11) includes a gas contraction and acceleration cylinder (111) and a gas amplification cylinder (112). Both the gas contraction and acceleration cylinder (111) and the gas amplification cylinder (112) are conical, and the cones of the gas contraction and acceleration cylinder (111) and the gas amplification cylinder (112) are arranged back to back.

2. The automatic fluoride salt feeding device for the small surface of the electrolytic cell according to claim 1, characterized in that, The gas amplification cylinder (112) is provided with an air flow filling hole (1111).

3. The automatic feeding device for cryolite on the small surface of the electrolytic cell according to claim 2, characterized in that, The value range of the inclination angle a of the inner wall of the gas contraction and acceleration cylinder (111) is 20° to 22°. The value range of the inclination angle b of the inner wall of the gas amplification cylinder (112) is 23° to 25°.

4. The automatic feeding device for cryolite on the small surface of the electrolytic cell according to claim 3, characterized in that, The filter cylinder (5) is located at the air inlet end of the discharge cylinder (4), and the inner diameter of the filter cylinder (5) is larger than that of the discharge cylinder (4). Near the top of the filter cylinder (5) and close to the feeding cylinder (2), a feeding hole (51) is opened. On the side of the filter cylinder (5) close to the discharge cylinder (4), blanking holes (52) are evenly opened.

5. The automatic feeding device for cryolite on the small surface of the electrolytic cell according to claim 4, characterized in that, On one side of the steel pipe main body (1), there is a blanking collection cavity (12), and the blanking collection cavity (12) is communicated with the steel pipe main body (1).

6. The automatic feeding device for fluoride salts on the small surface of the electrolytic cell according to claim 5, wherein At the bottom of the blanking collection cavity (12), there is an aggregate pipe (121).

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