Electrolytic aluminum crust breaking cylinder

Abstract

The electrolytic aluminum crust breaking air cylinder comprises a cylinder body, end covers, a piston, a piston rod, an excitation piece, a sensor, a PLC and an electromagnetic valve, the piston is installed in the cylinder body in a sliding mode and connected with the piston rod, the end covers are installed at the two ends of the cylinder body, the piston rod penetrates through the two end covers, and the excitation piece is installed on the inner circumferential wall of the cylinder body. The sensor is installed on the piston rod and matched with the excitation piece, a signal output line of the sensor penetrates out of an inner hole of the piston rod and is electrically connected with the PLC, the air inlet end and the air outlet end of the electromagnetic valve are correspondingly communicated with the air inlet end and the air outlet end of the cylinder body respectively, and the PLC is electrically connected with the electromagnetic valve. According to the crust breaking air cylinder, the stroke of the crust breaking air cylinder can be adjusted so as to ensure that the crust breaking air cylinder can withdraw the crust breaking hammer in time, and the resource waste phenomenon caused by long-time ventilation is greatly reduced; the hammer head is prevented from being damaged due to long-time immersion in molten aluminum; the crust breaking cylinder and the crust breaking hammer are prevented from being corroded to pollute molten aluminum; and the phenomenon that the hammer head adheres to electrolyte to form a gourd head is reduced.

Description

Technical Field

[0001] This utility model relates to the field of shell-breaking cylinder technology, and in particular to an electrolytic aluminum shell-breaking cylinder. Background Technology

[0002] The function of the shell-breaking cylinder is to connect to and power the shell-breaking hammers, which then break the hard electrolyte shell that forms inside the electrolytic cell during production, ensuring a continuous supply of raw materials such as alumina and fluoride salts. Currently, in the electrolytic aluminum production process, multiple shell-breaking cylinders operate simultaneously from a single gas path to one electrolytic cell. The standard for setting the working time of the shell-breaking cylinders is that the hammers descend uniformly, and then retract simultaneously after all the hammers have completed breaking the hard electrolyte shell. This means that the timing can only be set based on the shell-breaking cylinder that completes the breaking process the slowest, to ensure uniform operation and allow the hard electrolyte shell of one electrolytic cell to be broken in one pass.

[0003] However, in actual production, the thickness of the electrolyte crust formed in the electrolytic cell varies. This means that the cylinders that complete their work first need continued air supply, and the corresponding shell-breaking hammers must remain immersed in the electrolyte after their work is finished. This not only wastes resources but also accelerates the wear and tear on the shell-breaking hammers, and prolonged operation can negatively impact the quality of the molten aluminum. Utility Model Content

[0004] The purpose of this invention is to provide an electrolytic aluminum shell-breaking cylinder to solve the problem that the shell-breaking cylinder cannot be retracted in advance after completing the breaking of the electrolyte hard shell.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An electrolytic aluminum shell-forming cylinder includes a cylinder body, end caps, a piston, a piston rod, an excitation element, a sensor, a PLC controller, and a solenoid valve. The piston is slidably mounted in the cylinder body and connected to the piston rod. The end caps are mounted at both ends of the cylinder body, and the piston rod passes through the two end caps. The excitation element is mounted on the inner peripheral wall of the cylinder body. The sensor is mounted on the piston rod and is adapted to the excitation element. The signal output line of the sensor passes through the inner hole of the piston rod and is electrically connected to the PLC controller. The inlet and outlet ends of the solenoid valve are respectively connected to the inlet and outlet ends of the cylinder body. The PLC controller is electrically connected to the solenoid valve.

[0007] A further technical solution is that the sensor is a proximity sensor.

[0008] A further technical solution is that the excitation element is a spring arranged horizontally and facing the sensing end of the sensor.

[0009] A further technical solution is that dynamic sealing pairs are provided between the piston and the cylinder and between the piston rod and the end cap.

[0010] A further technical solution is: the inner wall of the cylinder is provided with an inner groove, the inner groove forms a sealed cavity through a cover, the excitation element is slidably installed in the sealed cavity through a first magnetic block, the cylinder body is provided with an outer groove, and a second magnetic block adapted to the first magnetic block is slidably installed in the outer groove.

[0011] A further technical solution is: a push rod is installed on the second magnetic block, the push rod is slidably connected to the side plate of the outer groove, and the push rod is locked to the side plate by a nut.

[0012] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0013] This utility model proposes an electrolytic aluminum shell-breaking cylinder. The cylinder contains an excitation element and a sensor. The stroke of the cylinder is adjusted according to the thickness of the electrolyte shell, ensuring that the shell-breaking cylinder can retract the shell-breaking hammer head promptly after completing the shell-breaking process. This achieves several advantages: firstly, it significantly reduces resource waste from prolonged ventilation, saving energy and protecting the environment; secondly, it prevents damage to the shell-breaking hammer head caused by prolonged immersion in molten aluminum; thirdly, it avoids corrosion and contamination of the molten aluminum by the shell-breaking cylinder and hammer head; and fourthly, it reduces the phenomenon of electrolyte adhesion to the hammer head, preventing the formation of a "gourd head" (a type of moldy head) and eliminating the need for manual hammering for cleaning under harsh working conditions. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an electrolytic aluminum shell-forming cylinder according to the present invention.

[0015] Figure 2 This utility model Figure 1 A structural diagram from a frontal viewpoint.

[0016] Figure 3 This utility model Figure 1 A schematic diagram of the middle cylinder block.

[0017] Reference numerals: 1. Cylinder body; 2. End cap; 3. Piston; 4. Piston rod; 5. Actuator; 6. Sensor; 7. PLC controller; 8. Inner groove; 9. First magnetic block; 10. Outer groove; 11. Second magnetic block; 12. Second magnetic block; 13. Side plate; 14. Nut. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example 1:

[0025] This implementation example Figure 1 and Figure 2 As shown, an electrolytic aluminum shell-forming cylinder includes a cylinder body 1, end caps 2, piston 3, piston rod 4, excitation element 5, sensor 6, PLC controller 7, and solenoid valve. The piston 3 is slidably installed inside the cylinder body 1 and is connected to the piston rod 4. The end caps 2 are installed at both ends of the cylinder body 1, and the piston rod 4 passes through the two end caps 2. The excitation element 5 is installed on the inner peripheral wall of the cylinder body 1. The sensor 6 is installed on the piston rod 4 and is adapted to the excitation element 5. The signal output line of the sensor 6 passes through the inner hole of the piston rod 4 and is electrically connected to the PLC controller 7. The inlet and outlet ends of the solenoid valve are respectively connected to the inlet and outlet ends of the cylinder body 1. The PLC controller 7 is electrically connected to the solenoid valve.

[0026] First, based on the depth of the electrolytic cell at the station where the shell-breaking cylinder is located and the thickness of the electrolyte shell inside the cell, calculate or measure the descent height (i.e., stroke) of the shell-breaking cylinder with the hammer. Then, install the excitation element 5 at a suitable position inside the cylinder body 1. After the shell-breaking cylinder is vented through the solenoid valve, the piston 3 will bring the sensor 6 on it close to the excitation element 5 and transmit a signal to the controller 7 through the signal output line passing through the inner hole of the piston rod 4. The controller 7 controls the solenoid valve to switch states, the air inlet of the shell-breaking cylinder becomes the air outlet, and the air outlet becomes the air inlet. When the states are switched, the shell-breaking cylinder with the hammer retracts in time.

[0027] It is worth noting that the exciter 5 and sensor 6 are located inside the cylinder, where the working environment is relatively pure. In the electrolytic aluminum environment, this greatly protects the safety and accuracy of the components.

[0028] Preferably, sensor 6 is a proximity sensor.

[0029] When the proximity sensor approaches the excitation element 5, it generates an electrical signal to the controller 7, which controls the shell-breaking cylinder to retract the hammer head in time.

[0030] Preferably, the actuating element is a spring arranged horizontally and facing the sensing end of the sensor 6.

[0031] The spring can both activate sensor 6 and provide some cushioning and anti-collision effect.

[0032] Preferably, dynamic sealing pairs are provided between the piston 3 and the cylinder 1, and between the piston rod 4 and the end cover 2.

[0033] The dynamic sealing pair serves to seal the inner cavity of the cylinder.

[0034] Example 2:

[0035] Based on the above embodiments, this embodiment, for example Figure 3As shown, the inner wall of the cylinder body 1 is provided with an inner groove 8, and the inner groove 8 forms a sealed cavity through a cover. The excitation element 5 is slidably installed in the sealed cavity through the first magnetic block 9. The cylinder body 1 is provided with an outer groove 10, and a second magnetic block 11 adapted to the first magnetic block 9 is slidably installed in the outer groove 10.

[0036] The inner groove 8 is sealed with a cover, which facilitates the sliding adjustment of the first magnetic block 9 without causing air leakage in the piston 3. The second magnetic block 11 slides in the outer groove 10 of the cylinder body 1, attracting the first magnetic block 9, thereby achieving the effect of conveniently adjusting the position of the excitation element 5 from the outside and adjusting the stroke of the cylinder.

[0037] Preferably, a push rod 12 is installed on the second magnetic block 11. The push rod 12 is slidably connected to the side plate 13 of the outer groove 10, and the push rod 12 is locked to the side plate 13 by a nut 14.

[0038] The second magnetic block 11 is moved by the push rod 12 to adjust the stroke of the cylinder. The nut 14 is threaded on the push rod 12 to fix the push rod 12.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cylinder for extruding and shelling aluminum in electrolytic processes, characterized in that: The device includes a cylinder (1), end caps (2), piston (3), piston rod (4), exciter (5), sensor (6), PLC controller (7), and solenoid valve. The piston (3) is slidably installed inside the cylinder (1) and is connected to the piston rod (4). The end caps (2) are installed at both ends of the cylinder (1). The piston rod (4) passes through the two end caps (2). The exciter (5) is installed on the inner peripheral wall of the cylinder (1). The sensor (6) is installed on the piston rod (4) and is adapted to the exciter (5). The signal output line of the sensor (6) passes through the inner hole of the piston rod (4) and is electrically connected to the PLC controller (7). The inlet and outlet of the solenoid valve are respectively connected to the inlet and outlet of the cylinder (1). The PLC controller (7) is electrically connected to the solenoid valve.

2. The electrolytic aluminum shell-breaking cylinder according to claim 1, characterized in that: The sensor (6) is a proximity sensor.

3. The electrolytic aluminum shell-breaking cylinder according to claim 1, characterized in that: The excitation element is a spring arranged horizontally and facing the sensing end of the sensor (6).

4. The electrolytic aluminum shell-breaking cylinder according to claim 1, characterized in that: Dynamic sealing pairs are provided between the piston (3) and the cylinder (1) and between the piston rod (4) and the end cap (2).

5. The electrolytic aluminum shell-breaking cylinder according to claim 1, characterized in that: The inner wall of the cylinder (1) is provided with an inner groove (8), and the inner groove (8) forms a sealed cavity by a cover. The excitation element (5) is slidably installed in the sealed cavity by a first magnetic block (9). The cylinder (1) is provided with an outer groove (10), and a second magnetic block (11) adapted to the first magnetic block (9) is slidably installed in the outer groove (10).

6. The electrolytic aluminum shell-breaking cylinder according to claim 5, characterized in that: A push rod (12) is installed on the second magnetic block (11). The push rod (12) is slidably connected to the side plate (13) of the outer groove (10), and the push rod (12) is locked to the side plate (13) by a nut (14).

Images