Shell pressing air cylinder for electrolytic bath

Abstract

The utility model belongs to the technical field of electrolytic baths, and particularly relates to a shell pressing cylinder for an electrolytic bath, which comprises a shell pressing cylinder body and end cover pieces symmetrically arranged at two ends of the shell pressing cylinder body, the tail end of the shell pressing cylinder is connected with a valve body, L-shaped supporting vertical plates which are arranged oppositely are fixed on the outer walls of two sides of the end cover pieces close to a piston rod, and the L-shaped supporting vertical plates are fixed on the outer walls of two sides of the shell pressing cylinder body. A clamping assembly for providing clamping, buffering, positioning and noise reduction for the telescopic movement of the piston rod is mounted on the two L-shaped supporting vertical plates; the clamping assembly comprises two symmetrically-arranged L-shaped clamping plates, auxiliary supporting plates and air springs, the auxiliary supporting plates are installed on the inner walls of the L-shaped clamping plates correspondingly, the air springs are symmetrically installed between the inner walls of the L-shaped clamping plates and the auxiliary supporting plates, and the opposite sides of the L-shaped clamping plates and the auxiliary supporting plates are each provided with an arc-shaped notch for a piston rod to penetrate through. Positioning steel balls are embedded in the inner wall of each arc-shaped notch at equal intervals in a rolling mode, and the positioning steel balls make rolling friction contact with the outer wall of the piston rod.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrolytic cells, in particular to a shell compression cylinder for an electrolytic cell. Background Art

[0002] The shell compression system on the electrolytic cell in the electrolytic aluminum workshop is a device and system used to open a hole on the hard shell surface of the electrolyte in the electrolytic cell so as to add alumina and fluoride salt raw materials into the electrolytic cell for electrolytic production of primary aluminum. The existing shell compression cylinder has a large operating impact force, which causes the piston rod to vibrate when it moves rapidly and easily, and is also prone to noise, and even causes the piston rod of the shell compression cylinder to deviate, reducing the working efficiency in the electrolytic cell.

[0003] After searching, the existing Chinese patent publication number: CN208933500U is a kind of aluminum electrolytic cell shelling cylinder, including a cylinder body and a sealing piston, the cylinder body is provided with a cavity for the sealing piston to move, the two ends of the cylinder body are respectively provided with a compression chamber and a retraction chamber, the compression chamber and the retraction chamber are connected with the cavity; the compression chamber is connected with a first air inlet pipe, and the retraction chamber is connected with a second air inlet pipe; the compression chamber and the retraction chamber are connected with a ventilation branch pipe, an air pressure sensor is provided in the compression chamber, and a stop valve connected with the ventilation branch pipe is provided in the retraction chamber, and the valve of the stop valve protrudes into the cavity and can collide with the surface of the sealing piston.

[0004] The cited patent document also has the same problem. The large impact force during operation causes the piston rod to vibrate during rapid telescopic movement, which easily generates noise and even causes the piston rod of the shell compression cylinder to deviate, thereby reducing the working efficiency in the electrolytic cell. Utility Model Content

[0005] The utility model aims to provide a shell compression cylinder for an electrolytic cell to solve the problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shell compression cylinder for an electrolytic cell, comprising a shell compression cylinder body and end covers symmetrically installed at both ends of the shell compression cylinder body, a piston rod is arranged at the output end of the shell compression cylinder body, a connecting plug is connected to the free end of the piston rod, a valve body is connected to the tail end of the shell compression cylinder, and L-shaped support vertical plates arranged in opposite directions are fixed to the outer walls of both sides of the end cover close to the piston rod;

[0007] A clamping assembly is installed on the two L-shaped support vertical plates to provide clamping, buffering, positioning and noise reduction for the telescopic movement of the piston rod. The clamping assembly includes two symmetrically arranged L-shaped clamping plates, auxiliary support plates respectively installed on the inner wall of each L-shaped clamping plate, and air springs symmetrically installed between the inner walls of the L-shaped clamping plates and the auxiliary support plates. The L-shaped clamping plates and the auxiliary support plates are provided with arc-shaped notches for the piston rod to pass through on opposite sides. The inner wall of each of the arc-shaped notches is equidistantly embedded with rolling positioning steel balls, and the positioning steel balls are in rolling friction contact with the outer wall of the piston rod.

[0008] In this solution, the inner side walls of the two L-shaped support vertical plates are bonded with silicone shock-absorbing blocks, and the opposite side surfaces of the two silicone shock-absorbing blocks are elastically abutted against the inner wall of the L-shaped clamping plate;

[0009] The tail ends of the two L-shaped clamping plates are both plugged into adjacent L-shaped supporting vertical plates.

[0010] In this solution, preferably, both sides of the L-shaped support vertical plate close to the piston rod are provided with plug-in ports for the L-shaped clamping plate to be plugged in, and buffer silicone gaskets are bonded to the two plug-in ports;

[0011] One end of the L-shaped clamping plate away from the piston rod is adapted to be inserted into the punched silicone gasket.

[0012] Preferably, both sides of the L-shaped supporting vertical plate are connected to the L-shaped clamping plate by locking bolts.

[0013] Preferably, the screw ends of the locking bolts are bonded with rubber shock-absorbing pads, and the rubber shock-absorbing pads are elastically abutted against the outer wall of the L-clamping plate in the L-shaped supporting vertical plate.

[0014] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0015] The electrolyzer uses a compression shell cylinder, an L-shaped clamping plate, an auxiliary support plate and an air spring to form a clamping, buffering and positioning system for the piston rod. The air spring can effectively absorb the impact force generated by the piston rod during rapid extension and retraction, reduce vibration, and realize low-friction guidance of the piston rod through positioning steel balls, ensure its linear motion and reduce noise caused by shaking. This improvement significantly improves the operating stability of the compression shell cylinder, reduces equipment noise and improves the working environment. A multi-stage shock-absorbing system is constructed with silicone shock-absorbing blocks, buffer silicone washers and rubber shock-absorbing pads. The silicone shock-absorbing blocks absorb the vibration transmitted by the end cover, and the buffer silicone washers and rubber shock-absorbing pads provide additional shock-absorbing effects at the connection between the L-shaped clamping plate and the L-shaped support vertical plate and the locking bolts respectively. This multi-stage shock-absorbing design further enhances the overall seismic performance of the equipment, significantly reduces the vibration and noise levels during operation, and improves the durability of the equipment and the comfort of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the compression shell cylinder for the electrolytic cell of the utility model;

[0018] Figure 2 It is a schematic structural diagram of the L-shaped clamping plate and the auxiliary support plate of the utility model in a disassembled state;

[0019] Figure 3 For this utility model Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0020] Description of reference numerals:

[0021] In the figure: 1. Compression shell cylinder body; 2. Valve body; 3. Piston rod; 4. Connecting plug; 5. L-shaped support vertical plate; 6. Frame plate; 7. L-shaped clamping plate; 8. M6 screw; 9. Air spring; 10. End cover; 11. Auxiliary support plate; 12. Arc-shaped notch; 13. Positioning steel ball; 14. Arc-shaped rib plate; 15. Silicone shock-absorbing block; 16. Buffer silicone gasket; 17. Through hole; 18. Locking bolt; 19. Rubber shock-absorbing pad. DETAILED DESCRIPTION

[0022] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0023] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside in the figures shown in the present utility model, and are explained here together.

[0024] This embodiment discloses Figures 1 to 3The shell compression cylinder for an electrolytic cell shown in the figure comprises a shell compression cylinder body 1 and end covers 10 symmetrically installed at both ends of the shell compression cylinder body 1. A piston rod 3 is arranged at the output end of the shell compression cylinder body 1. A connecting plug 4 is connected to the free end of the piston rod 3 for effectively crushing the electrolyte hard shell in the electrolytic cell. The tail end of the shell compression cylinder body 1 is connected to a valve body 2 through four M6 screws 8 for controlling the inlet and outlet of the gas inside the cylinder, thereby controlling the telescopic movement of the piston rod 3. The end covers 10 at both ends of the shell compression cylinder body 1 are used to fix the entire shell compression cylinder structure to ensure its stability during operation. A frame plate 6 is clamped on the peripheral side of the middle position of the shell compression cylinder body 1. The outer walls of the end covers 10 on both sides close to the piston rod 3 are L-shaped support vertical plates 5 arranged back to back are fixed, and clamping components for clamping, buffering, positioning and noise reduction for the telescopic movement of the piston rod 3 are installed on the two L-shaped support vertical plates 5. The clamping components include two symmetrically arranged L-shaped clamping plates 7, auxiliary support plates 11 respectively installed on the inner wall of each L-shaped clamping plate 7, and air springs 9 symmetrically installed between the inner walls of the L-shaped clamping plates 7 and the auxiliary support plates 11. The air springs 9 have good buffering properties and can effectively absorb the impact force generated by the piston rod 3 during rapid telescopic movement, reduce vibration and reduce noise. Both ends of the two auxiliary support plates 11 are integrally formed with arc-shaped ribs 14, and the arc-shaped ribs 14 are welded to the inner walls of the L-shaped clamping plates 7 to increase the stability of the auxiliary support plates 11.

[0025] In this embodiment, an arc-shaped notch 12 for the piston rod 3 to pass through is provided on the opposite sides of the L-shaped clamping plate 7 and the auxiliary support plate 11, so that the piston rod 3 can slide freely inside the clamping assembly during the extension and retraction process. The inner wall of each arc-shaped notch 12 is equidistantly and rollingly embedded with positioning steel balls 13. The outside of the positioning steel balls 13 has a steel ball retainer. The retainer has the same structure as the retainer inside the bearing, and the steel ball retainer is embedded in the arc-shaped notch 12. The positioning steel balls 13 are in rolling frictional contact with the outer wall of the piston rod 3, which not only plays a guiding role to ensure the linear motion of the piston rod 3, but also reduces frictional resistance and further reduces vibration.

[0026] In this embodiment, the rolling contact between the positioning steel ball 13 and the outer wall of the piston rod 3 greatly reduces the friction coefficient between the two, so that the piston rod 3 is subjected to more uniform force during the extension and retraction process, avoiding the eccentric wear phenomenon caused by uneven friction. This design effectively prolongs the service life of the piston rod 3 and the parts in contact therewith, reduces equipment failures and maintenance costs caused by wear, and the rolling contact of the positioning steel ball 13 replaces the traditional sliding contact, reducing the noise generated by friction. Especially in the process of high-speed extension and retraction, the rolling friction sound of the positioning steel ball 13 is much lower than the sliding friction sound, which helps to reduce the noise of equipment operation, improve the working environment, and meet the requirements of modern industry for environmental protection and low noise.

[0027] In this embodiment, the clamping space formed by the L-shaped clamping plate 7 and the auxiliary support plate 11, as well as the precise guidance of the positioning steel ball 13, ensure that the piston rod 3 always maintains linear motion during the extension and retraction process, avoiding problems such as inaccurate shelling position and uneven force caused by shaking or offset. This high-precision motion control helps to improve the efficiency and quality of the shelling operation of the electrolytic cell and ensure the smooth progress of the electrolysis process. The L-shaped clamping plate 7 and the auxiliary support plate 11 together constitute an effective support structure for the piston rod 3, improve the overall structural rigidity of the equipment, and reduce the equipment vibration caused by the rapid extension and retraction of the piston rod 3. This enhanced structural stability not only helps to reduce the operating noise of the equipment, but also helps to extend the service life of various components of the equipment and improve the overall reliability of the equipment.

[0028] In this embodiment, the inner side walls of the two L-shaped support vertical plates 5 are bonded with silicone shock-absorbing blocks 15. The silicone shock-absorbing blocks 15 have good elasticity and can effectively absorb the vibration of the end cover 10 caused by the impact of the piston rod 3. The opposite sides of the two silicone shock-absorbing blocks 15 are elastically abutted against the inner wall of the L-shaped clamping plate 7 to form a second shock-absorbing defense line.

[0029] In this embodiment, the tail ends of the two L-shaped clamping plates 7 are plugged into the adjacent L-shaped support vertical plates 5 to enhance the connection stability between the clamping assembly and the L-shaped support vertical plates 5. Both sides of the adjacent L-shaped support vertical plates 5 close to the piston rod 3 are provided with plug-in interfaces for the L-shaped clamping plates 7 to be plugged in. Buffer silicone gaskets 16 are bonded to the two plug-in interfaces to further absorb the collision impact between the L-shaped clamping plates 7 and the L-shaped support vertical plates 5. The end of the L-shaped clamping plate 7 away from the piston rod 3 is adapted to be plugged into the buffer silicone gasket 16 to achieve soft connection. To reduce vibration transmission, both sides of the L-shaped support plate 5 are connected to the L-shaped clamping plate 7 by locking bolts 18 to ensure that the connection with the L-shaped support plate 5 is firm and adjustable. A through hole 17 for the locking bolt 18 to pass through is opened on the outer wall of the buffer silicone gasket 16. The screw end of the locking bolt 18 is bonded with a rubber shock-absorbing pad 19. The rubber shock-absorbing pad 19 elastically abuts against the outer wall of the L-shaped clamping plate 7 in the adjacent L-shaped support plate 5 to provide a third level of shock-absorbing protection to ensure the stability of the overall structure and silent operation.

[0030] In this embodiment, a control gas path is provided for the valve body 2 to open and close the shell compression cylinder body 1. After the compressed air provided by the fan (or the shell compression electrical signal sent by the control cabinet) enters the system, it is divided into two paths to drive the main gas switch valve and the start valve respectively. After the main gas switch valve and the start valve are opened, the start valve opens the reversing valve and connects the main gas source to the rear end of the shell compression cylinder.

[0031] The other compressed air passes through the main air switch valve and throttle valve opened in the previous step, reaches the reversing valve and enters the rear end of the shell compression cylinder. The shell compression cylinder extends slowly, and the whole extension process takes 2 seconds. When it reaches the electrolyte shell surface of the electrolytic cell, it senses the reverse pressure given by the shell surface, uses the lowest air pressure to press open the shell surface and quickly returns.

[0032] After the front end of the shell compression cylinder senses that the shell surface is pressed open, an air pressure is sent out through the shell breaking state valve to close the start valve, cut off the main air source, and the reversing valve is reset under the action of the spring. The front end of the shell compression cylinder receives air, the cylinder piston rod quickly retracts, and is mechanically locked. At this time, compressed air is no longer needed.

[0033] The shell breaking status valve is used to sense whether the shell surface is open. It can take repeated shell compression, pressurized shell compression, sound and light alarms, etc. to ensure that the shell surface is opened reliably.

[0034] The customer can also choose whether to send the above status remotely to a computer or mobile terminal.

[0035] Since the entire system claims to be a closed-loop system, it can be operated independently or in groups, and the entire process does not require additional gas control cabinets to control.

[0036] The entire compression shell system is a purely mechanical structure without electronic components, and is particularly suitable for the strong magnetic, strong dust, strong corrosion and high temperature environment of the electrolytic aluminum plant.

[0037] Working principle:

[0038] The shell compression cylinder for the electrolytic cell first controls the gas source through the valve body 2 to drive the piston rod 3 to reciprocate inside the shell compression cylinder body 1, and the piston rod 3 drives the connecting plug 4 to crush the electrolyte hard shell in the electrolytic cell. In this process, the two L-shaped clamping plates 7 and the two auxiliary support plates 11 clamp the piston rod 3 centripetally, and the air spring 9 and the positioning steel ball 13 work together in this clamping process to absorb the impact force of the piston rod 3, reduce vibration and reduce noise. The silicone shock-absorbing block 15, the buffer silicone gasket 16 and the rubber shock-absorbing pad 19 constitute a multi-stage shock-absorbing system to further suppress the propagation of vibration and ensure the smooth operation of the equipment.

[0039] It should be noted that, in this article, relational terms such as one and two are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shell compression cylinder for an electrolytic cell, comprising a shell compression cylinder body (1) and end covers (10) symmetrically mounted at both ends of the shell compression cylinder body (1). Features: The output end of the compression shell cylinder body (1) is provided with a piston rod (3), the free end of the piston rod (3) is connected to a connecting plug (4), the tail end of the compression shell cylinder body (1) is connected to a valve body (2), and L-shaped supporting vertical plates (5) arranged in opposite directions are fixed to the outer walls of both sides of the end cover (10) close to the piston rod (3); A clamping assembly for clamping, buffering, positioning and noise reduction for the telescopic movement of the piston rod (3) is installed on the two L-shaped support vertical plates (5), and the clamping assembly includes two symmetrically arranged L-shaped clamping plates (7), auxiliary support plates (11) respectively installed on the inner wall of each L-shaped clamping plate (7), and an air spring (9) symmetrically installed between the inner walls of the L-shaped clamping plate (7) and the auxiliary support plate (11). The L-shaped clamping plate (7) and the auxiliary support plate (11) are provided with an arc-shaped notch (12) for the piston rod (3) to pass through on the opposite sides, and the inner wall of each arc-shaped notch (12) is equidistantly rolled with a positioning steel ball (13), and the positioning steel ball (13) is in rolling friction contact with the outer wall of the piston rod (3).

2. A shell-pressing cylinder for an electrolytic cell according to claim 1, Features: The inner side walls of the two L-shaped support vertical plates (5) are both bonded with silicone shock-absorbing blocks (15), and the opposite side surfaces of the two silicone shock-absorbing blocks (15) are elastically abutted against the inner wall of the L-shaped clamping plate (7); The tail ends of the two L-shaped clamping plates (7) are plugged into adjacent L-shaped supporting upright plates (5).

3. A shell-pressing cylinder for an electrolytic cell according to claim 2, Features: Both sides of the L-shaped support vertical plate (5) close to the piston rod (3) are provided with plug-in ports for the L-shaped clamping plate (7) to be plugged in, and buffer silicone gaskets (16) are bonded to the two plug-in ports; One end of the L-shaped clamping plate (7) away from the piston rod (3) is adapted to be inserted into the buffer silicone gasket (16).

4. A shell-pressing cylinder for an electrolytic cell according to claim 3, Features: Both sides of the L-shaped supporting vertical plate (5) are connected to the L-shaped clamping plate (7) via locking bolts (18).

5. A shell-pressing cylinder for an electrolytic cell according to claim 4, Features: The screw ends of the locking bolts (18) are bonded with rubber shock-absorbing pads (19), and the rubber shock-absorbing pads (19) are elastically abutted against the outer wall of the L-shaped clamping plate (7) in the L-shaped supporting vertical plate (5).

Images