Scissor type guide rod sealing device

Abstract

The utility model relates to the technical field of guide rod sealing, in particular to a scissor type guide rod sealing device which comprises a first fixing plate, a second fixing plate matched with the first fixing plate is arranged on one side of the first fixing plate, two hard sealing plates are arranged between the second fixing plate and the first fixing plate, and the two hard sealing plates are arranged in a mirror image mode. And the connecting rod is arranged below the hard sealing plate. According to the utility model, the two hard sealing plates can be simultaneously opened or closed towards two sides along with the anode guide rod in and out of the positioning port through the torsion spring assembly, so that the purpose of sealing the gap between the anode guide rod and the positioning port is achieved, and meanwhile, the hard sealing plates do not generate friction with the anode guide rod during the period; collision damage of the multifunctional crown block to the guide rod seal during anode replacement is avoided, the service life of the guide rod seal is prolonged, and the workload of maintenance of an electrolytic cell is reduced; and through the spring assembly, when the anode guide rod shifts back and forth, the hard sealing plate has certain force to clamp the anode guide rod, so that the sealing effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of guide rod sealing technology, specifically a scissor-type guide rod sealing device. Background Technology

[0002] An aluminum electrolytic cell is an important piece of equipment used to produce aluminum metal. It produces aluminum metal by electrolyzing molten aluminum oxide. It mainly consists of a cell shell, anode, cathode, electrolyte, and insulation materials. There are twenty-four positioning ports on each side of the aluminum electrolytic cell. Each positioning port is equipped with a guide rod for positioning and fixing the anode. The anode guide rod acts as a current channel, which can conduct electrical energy from the external power source to the anode in the electrolytic cell, thereby starting and maintaining the electrolysis process. At the same time, in order to prevent the leakage of flue gas from the electrolytic cell and reduce the heat and fugitive emissions in the electrolytic cell, it is necessary to seal the anode guide rod inside the positioning port.

[0003] In existing guide rod sealing devices, the anode guide rod often shakes during anode replacement, causing the horizontal cover plate and guide rod seal to collide with the anode guide rod, resulting in damage to the horizontal cover plate and guide rod seal. This greatly increases the maintenance work of the horizontal cover plate and guide rod seal, and the electrolytic cell is prone to flue gas leakage due to poor sealing, reducing the overall gas collection efficiency of the electrolytic cell and affecting the purification effect of the entire workshop. This is not conducive to the long-term operation of electrolytic aluminum production and processing. Utility Model Content

[0004] The purpose of this invention is to provide a scissor-type guide rod sealing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a scissor-type guide rod sealing device, comprising:

[0006] A first fixing plate, a second fixing plate adapted to it is provided on one side of the first fixing plate, and two hard sealing plates are provided between the second fixing plate and the first fixing plate, the two hard sealing plates being mirror images of each other;

[0007] A connecting rod is located below the hard sealing plate. The top of the connecting rod is equipped with a torsion spring assembly that allows the hard sealing plate to open and close synchronously, and the bottom of the connecting rod is equipped with a spring assembly that allows the hard sealing plate to clamp the anode guide rod.

[0008] Preferably, the torsion spring assembly includes a rotating groove disposed inside the hard sealing plate, a torsion spring coaxially disposed inside the rotating groove, and support plates disposed at both ends of the torsion spring. The support plates are fixedly installed on the top of the connecting rod, the torsion spring is connected to the hard sealing plate and the support plates respectively, and a rotating shaft is coaxially disposed inside the torsion spring. The rotating shaft is rotatably connected to the support plates at both ends respectively.

[0009] Preferably, the hard sealing plate is made of polytetrafluoroethylene or glass fiber reinforced polypropylene.

[0010] Preferably, the spring assembly includes a limiting seat disposed below the connecting rod. There are two limiting seats arranged in a mirror image. One limiting seat is fixedly installed at the bottom of the inner cavity of the first fixing plate, and the other limiting seat is fixedly installed at the bottom of the connecting rod. A compression spring is provided between the limiting seats. The compression spring is connected to the limiting seats at both ends respectively. A support sleeve is vertically installed at the bottom of the upper limiting seat. An inner rod is slidably inserted coaxially inside the support sleeve. The bottom end of the inner rod is connected to the lower limiting seat.

[0011] Preferably, each of the two hard sealing plates is provided with a limiting pin on the side that is far apart from each other, and the limiting pin is fixedly installed inside the first fixing plate.

[0012] Preferably, a pin is provided at both ends of the connecting rod, the pin is fixedly installed inside the first fixing plate, and a corresponding pin is provided on the outside of the second fixing plate, the pin being located inside the pin.

[0013] Preferably, both the second fixing plate and the first fixing plate are made of metal, and the first fixing plate is fixedly connected to the pin by welding.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention utilizes a torsion spring assembly to allow two hard sealing plates to simultaneously open or close to both sides as the anode guide rod enters and exits the positioning port. This achieves the purpose of sealing the gap between the anode guide rod and the positioning port. Simultaneously, the hard sealing plates do not rub against the anode guide rod, avoiding collision damage to the guide rod seal caused by the multi-functional overhead crane during anode replacement. This extends the service life of the guide rod seal, facilitates anode replacement, reduces the workload of electrolytic cell maintenance, and minimizes damage to the guide rod seal. Furthermore, the spring assembly allows the hard sealing plates to apply sufficient force to clamp the anode guide rod when it shifts back and forth, further improving the sealing effect. The support sleeve and inner rod of the sleeve allow for smoother extension and contraction of the compression spring, resulting in smoother displacement of the hard sealing plates and improving the overall structural stability of the spring assembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the specific structure of the hard sealing plate of this utility model;

[0018] Figure 3 This is a schematic diagram of the torsion spring assembly structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the spring assembly structure of this utility model.

[0020] In the diagram: 1. First fixing plate; 2. Second fixing plate; 3. Pin; 4. Insert pin; 5. Connecting rod; 6. Hard sealing plate; 7. Torsion spring assembly; 71. Support plate; 72. Rotating groove; 73. Rotating shaft; 74. Torsion spring; 8. Limiting pin; 9. Spring assembly; 91. Limiting seat; 92. Compression spring; 93. Support sleeve; 94. Inner rod of sleeve. Detailed Implementation

[0021] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0022] Please see Figure 1-4 As shown, a scissor-type guide rod sealing device includes a first fixing plate 1, a second fixing plate 2 adapted to the first fixing plate 1 on one side, and two hard sealing plates 6 between the second fixing plate 2 and the first fixing plate 1. The two hard sealing plates 6 are mirror images of each other. It should be noted that both hard sealing plates 6 are L-shaped, and the L-shaped design of the hard sealing plates 6 better fits the outer surface shape of the anode guide rod. A connecting rod 5 is located below the hard sealing plates 6, and a torsion spring assembly 7 is provided at the top of the connecting rod 5 to allow the hard sealing plates 6 to open and close synchronously. By setting the torsion spring assembly 7, the two hard sealing plates 6 can be driven simultaneously by the reverse force. The hard sealing plate 6 opens to both sides, preventing friction between it and the anode guide rod. This avoids damage to the guide rod seal caused by the multi-functional overhead crane during anode replacement, extends the service life of the guide rod seal, facilitates anode replacement, reduces the workload of electrolytic cell maintenance, and reduces damage to the guide rod seal. It achieves the effect of sealing the hard sealing plate 6 as it moves with the anode guide rod. The bottom of the connecting rod 5 is equipped with a spring assembly 9 that can clamp the hard sealing plate 6 onto the anode guide rod. By setting the spring assembly 9, it can play the role of stress relief and displacement. When the anode guide rod shifts back and forth, the hard sealing plate 6 can have a certain force to clamp the anode guide rod.

[0023] The torsion spring assembly 7 includes a rotating groove 72 disposed inside the hard sealing plate 6. A torsion spring 74 is coaxially disposed inside the rotating groove 72. Support plates 71 are provided at both ends of the torsion spring 74. The support plates 71 are fixedly mounted on the top of the connecting rod 5. The torsion spring 74 is connected to both the hard sealing plate 6 and the support plates 71. A rotating shaft 73 is coaxially disposed inside the torsion spring 74. The rotating shaft 73 is rotatably connected to the support plates 71 at both ends. Figure 2 , Figure 3As shown, when the anode guide rod leaves the positioning port of the aluminum electrolytic cell, the two hard sealing plates 6 will open to both sides simultaneously with the rotation shaft 73 as the center under the action of the reverse force of the torsion spring 74. During the electrode replacement operation, when the multi-functional overhead crane clamps the anode guide rod into the positioning port of the aluminum electrolytic cell, the inner side of the anode guide rod will push the corner of the two hard sealing plates 6, thereby causing the torsion spring 74 to be forced to move the two hard sealing plates 6 inward simultaneously. At this time, the anode guide rod reaches the designated position, and the hard sealing plates 6 are also sealed in place. This achieves the purpose of sealing the gap between the anode guide rod and the positioning port, and at the same time avoids the collision damage to the guide rod seal by the multi-functional overhead crane when replacing the anode. It facilitates the replacement of the anode, reduces the workload of electrolytic cell maintenance, and reduces the damage to the guide rod seal.

[0024] The hard sealing plate 6 is made of polytetrafluoroethylene or glass fiber reinforced polypropylene. In actual use, the hard sealing plate 6 made of polytetrafluoroethylene or glass fiber reinforced polypropylene has good sealing performance and high temperature resistance, and can cope with the working environment of electrolytic aluminum. It is an ideal material for manufacturing sealing plates.

[0025] The spring assembly 9 includes two limiting seats 91 located below the connecting rod 5, arranged in a mirror image. One limiting seat 91 is fixedly installed at the bottom of the inner cavity of the first fixing plate 1, and the other limiting seat 91 is fixedly installed at the bottom of the connecting rod 5. A compression spring 92 is provided between the limiting seats 91, and the compression spring 92 is connected to the limiting seats 91 at both ends. A support sleeve 93 is vertically installed at the bottom of the upper limiting seat 91. An inner sleeve rod 94 is coaxially and slidably inserted inside the support sleeve 93, and the bottom end of the inner sleeve rod 94 is connected to the lower limiting seat 91. Figure 2 , Figure 4 As shown, when the anode guide rod shifts back and forth, the limiting seat 91 and the compression spring 92 can use the hard sealing plate 6 to clamp the anode guide rod with a certain force, which can play the role of relieving force and displacement. Furthermore, the support sleeve 93 and the inner rod 94 of the sleeve can make the extension and retraction of the compression spring 92 smoother, thereby making the displacement of the hard sealing plate 6 smoother and improving the overall structural stability of the spring assembly 9.

[0026] Each of the two hard sealing plates 6 has a limiting pin 8 on its opposite side. The limiting pin 8 is fixedly installed inside the first fixed plate 1. Figure 2 As shown, by setting the limit pin 8, the hard sealing plate 6 is prevented from opening outward too much under the drive of the anode guide rod, thereby improving the overall working stability of the torsion spring assembly 7.

[0027] Both ends of the connecting rod 5 are provided with pins 3, which are fixedly installed inside the first fixing plate 1. The outer side of the second fixing plate 2 is provided with pins 4 corresponding to the pins 3, which are located inside the pins 3. Figure 1 , Figure 2As shown, by setting the pin 3 and the latch 4, the second fixing plate 2 and the first fixing plate 1 can be quickly disassembled and assembled, thus forming a three-layer structure with the second fixing plate 2, the first fixing plate 1 and the hard sealing plate 6 as the main components. This structure is compatible with most aluminum electrolytic prebaked cells. It should be noted that before the electrode replacement work, the operator needs to install this utility model above the plane of the electrolytic cell wing plate. At this time, the two hard sealing plates 6 surround the outer side of the anode guide rod, which is conducive to the subsequent sealing work between the positioning port and the anode guide rod.

[0028] Both the second fixing plate 2 and the first fixing plate 1 are made of metal. The first fixing plate 1 is fixedly connected to the pin 3 by welding. Figure 2 As shown, the pin 3 is fixed inside the first fixing plate 1 by welding, which facilitates quick assembly and disassembly between the second fixing plate 2 and the first fixing plate 1.

[0029] Working principle: First, the operator installs this utility model above the plane of the electrolytic cell wing plate. During the electrode changing operation, the torsion spring assembly 7 allows the two hard sealing plates 6 to open or close to both sides simultaneously as the anode guide rod enters and exits the positioning port. This achieves the purpose of sealing the gap between the anode guide rod and the positioning port. At the same time, the hard sealing plates 6 will not rub against the anode guide rod, avoiding collision damage to the guide rod seal by the multi-functional overhead crane when changing the anode, extending the service life of the guide rod seal, facilitating anode replacement, reducing the workload of electrolytic cell maintenance, and reducing the damage to the guide rod seal. Then, through the spring assembly 9, when the anode guide rod shifts back and forth, the hard sealing plates 6 can have a certain force to clamp the anode guide rod, further improving the sealing effect. Moreover, the support sleeve 93 and the inner rod 94 of the sleeve can make the extension and contraction of the compression spring 92 smoother, thereby making the displacement of the hard sealing plates 6 smoother and improving the overall structural stability of the spring assembly 9.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A scissor guide rod seal apparatus, characterized by, The utility model relates to a hard sealing plate of anode guide rod, belong to the field of hard sealing plate of anode guide rod. The utility model discloses a hard sealing plate of anode guide rod, belong to the field of hard sealing plate of anode guide rod. The utility model discloses a hard sealing plate of anode guide rod, belong to the field of hard sealing plate of anode guide rod.

2. A scissor lead seal apparatus as defined in claim 1, wherein: The utility model discloses a hard sealing plate of anode guide rod, belong to the field of hard sealing plate of anode guide rod.

3. A scissor lead seal apparatus as defined in claim 1, wherein: The utility model discloses a hard sealing plate of anode guide rod, belong to the field of hard sealing plate of anode guide rod.

4. A scissor lead seal apparatus as defined in claim 1, wherein: The utility model discloses a hard sealing plate of anode guide rod, belong to the field of hard sealing plate of anode guide rod.

5. A scissor lead seal apparatus as defined in claim 1, wherein: The utility model discloses a hard sealing plate of anode guide rod, belong to the field of hard sealing plate of anode guide rod.

6. A scissor lead seal apparatus as defined in claim 1, wherein: The utility model discloses a hard sealing plate of anode guide rod, belong to the field of hard sealing plate of anode guide rod.

7. A scissor lead seal apparatus as defined in claim 6, wherein: The utility model discloses a hard sealing plate of anode guide rod, belong to the field of hard sealing plate of anode guide rod. The utility model discloses a hard sealing plate of anode guide rod, belong to the field of hard sealing plate of anode guide rod. The utility model discloses a hard sealing plate of anode guide rod, belong to the field of hard sealing plate of anode guide rod. The utility model discloses a hard sealing plate of anode guide rod, belong to the field of hard sealing plate of anode guide rod. The utility model discloses a hard sealing plate of anode guide rod, belong to the field of hard sealing plate of anode guide rod. The utility model discloses a hard sealing plate of anode guide rod, belong to the field of hard sealing plate of anode guide rod. The utility model discloses a hard sealing plate of anode guide rod, belong to the field of hard sealing plate of anode guide rod. 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