Guide rod sealing device for prebaked anode aluminum electrolysis cell

Abstract

The utility model discloses a guide rod sealing device for a prebaked anode aluminum electrolysis cell, and belongs to the technical field of electrolytic aluminum. The device is mainly composed of a fixing groove, a fixing cover, a first insulating part and a second insulating part which are assembled through an insulating part rotating fixing shaft on the fixing groove, a cover plate fixing cylinder and a cotter pin. A tension spring is arranged between the first insulating part and the second insulating part, the insulating parts can automatically complete clamping and loosening actions according to the position of the guide rod under the action of the tension spring, the insulating parts are prevented from being damaged due to movement of the guide rod, the service life of the insulating parts is prolonged, and sealing between the insulating parts and the guide rod is guaranteed; the guide rod sealing device is fixed to the horizontal cover plate through a fixing cylinder and a magnetic attraction fixing column which are installed below the fixing groove, and the fixing cylinder below the fixing groove is matched with a hole in the horizontal cover plate to limit horizontal movement of the guide rod sealing device. The magnetic attraction fixing column is attracted to the horizontal cover plate to limit vertical movement of the guide rod sealing device. The device is convenient to replace, and has the advantages of simple structure, long service life, good sealing effect and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of electrolytic aluminum, and particularly relates to a guide rod sealing device for a prebaked anode aluminum electrolytic cell. Background Art

[0002] Rectangular openings required for installing the anode guide rods are provided at positions corresponding to the horizontal cover plates on both sides of the prebaked anode aluminum electrolytic cell and the anode guide rods. To ensure insulation between the anode guide rods and the horizontal cover plates, a gap is left between the rectangular opening and the anode guide rods. A large amount of toxic and harmful gases will be generated during the production process of the aluminum electrolytic cell. To prevent toxic and harmful gases from escaping into the working environment, it is necessary to seal the gap between the anode guide rod and the horizontal cover plates. This seal is usually called a guide rod sealing device, which must ensure sealing without affecting the operation of replacing the anode.

[0003] The traditional guide rod sealing device seals the gap between the anode guide rod and the horizontal cover plate by setting a strip of flexible material along the periphery of the guide rod on the rectangular opening, pressing the flexible material with the help of a pressure strip, and fixing it on the horizontal cover plate. This flexible material must be both heat-resistant and insulating. However, there are the following problems: the temperature at the installation location of the flexible material mentioned above is relatively high, and the flexible material is seriously aged. Since the position of the anode guide rod is not exactly the same each time it is replaced, the guide rod will impact the material and cause damage when changing the pole, shortening the service life of the seal. If the flexible material is not replaced in time, the harmful gas in the electrolytic cell will escape to the outside of the cell through the gap between the anode guide rod and the horizontal cover plate, affecting the surrounding working environment. Summary of the invention

[0004] In view of the deficiencies in the prior art, an object of the present invention is to provide a guide rod sealing device for a prebaked anode aluminum electrolytic cell.

[0005] The technical solution adopted by the invention is: a guide rod sealing device for a pre-baked anode aluminum electrolytic cell, the technical key points of which are that it is mainly composed of a fixed groove and a fixed cover assembled together, and a first insulating member and a second insulating member are installed in the groove body space formed by the two covering each other, and the first insulating member and the second insulating member are rotatably connected to the fixed groove and the edges of the two protrude outside the groove body space and contact with the anode guide rod. The first insulating member and the second insulating member rotate toward the anode guide rod as the anode guide rod moves to seal the contact part between the anode guide rod and the fixed groove, and a tension spring is also connected between the first insulating member and the second insulating member to make the upper parts of the first insulating member and the second insulating member close to each other and the lower parts separated.

[0006] Furthermore, the fixing groove is composed of a bottom plate, a side baffle plate, a fixing cylinder, a cover plate fixing cylinder and an insulating member rotating fixing shaft. The side baffle plate is welded and fixed to the outer edge of the upper surface of the bottom plate. A cover plate fixing cylinder for connecting to the fixing cover is provided on the ear plate of the outer wall of the side baffle plate, and a mounting hole for connecting to the side cotter pin is provided on the cover plate fixing cylinder; a first through hole and an insulating member rotating fixing shaft are also symmetrically provided on the bottom plate, and the free ends of the insulating member rotating fixing shaft are respectively provided with mounting holes for connecting to the main cotter pin; the fixing cylinder is arranged at the bottom of the fixing groove and matches the fixing hole on the horizontal cover plate.

[0007] Furthermore, the fixed cover is composed of a cover plate, a side baffle plate and an ear plate. The side baffle plate is welded and fixed to the outer edge of the lower surface of the cover plate. The side baffle plate of the fixed cover is buckled on the outer side of the side baffle plate of the fixing groove. The ear plate fixed on the cover plate is provided with a circular hole for matching the cover plate fixing cylinder on the fixing groove; the cover plate is respectively provided with insulating part rotating fixed shaft mounting holes matching the insulating part rotating fixed shaft on the fixing groove, and the cover plate is also provided with a second through hole corresponding to the position of the first through hole on the fixing groove.

[0008] Furthermore, the first insulating member is composed of an arc-shaped protruding end and a longitudinal connecting end, the arc-shaped protruding end protrudes out of the groove space, the flexible insulating seal is arranged on the inner wall of the first insulating member, and the flexible insulating seal extends from the inner side wall of the longitudinal connecting end to the initial end of the outer side wall of the arc-shaped protruding end, and a tension spring fixing column for connecting a tension spring is also provided on the outer end wall of the longitudinal connecting end.

[0009] Furthermore, the fixing groove and the fixing cover are fixed by rotating the fixing shaft and the cover plate fixing cylinder through the insulating member on the fixing groove and fixing them with the help of the side cotter pin and the main cotter pin;

[0010] The fixed cylinder installed under the fixed groove cooperates with the fixed hole on the horizontal cover plate to limit the horizontal movement of the guide rod sealing device; the magnetic fixed column installed on the fixed groove is adsorbed on the horizontal cover plate to limit the vertical movement of the guide rod sealing device.

[0011] Furthermore, the magnetic fixing column is mainly composed of a magnetic ring, a steel column and a lifting eye bolt with a flange. The magnetic ring is connected to the bottom of the steel column, and the lifting eye bolt is connected to the top of the steel column. The flange of the lifting eye bolt is larger than the diameter of the first through hole of the fixing groove and the diameter of the second through hole on the fixing cover.

[0012] Furthermore, a buffer rubber pad is provided between the flange and the fixing cover.

[0013] The beneficial effects of the present invention are as follows: the guide rod sealing device for a prebaked anode aluminum electrolytic cell is mainly composed of a fixing groove and a fixing cover assembled together, and is fixed by a cover plate fixing cylinder, an insulating member rotating fixing shaft, a main cotter pin and a side cotter pin; a first insulating member and a second insulating member are installed in a groove body space formed by the fixing groove and the fixing cover; a tension spring is connected between the first insulating member and the second insulating member; under the action of the tension spring, the first insulating member of the guide rod sealing device rotates clockwise around the axis, and the second insulating member rotates counterclockwise around the axis; arc-shaped protrusions on the first insulating member and the second insulating member press against the anode guide rod; the two insulating members can move according to the position of the guide rod to complete the clamping and releasing actions, which can effectively avoid damage to the insulating seal due to the guide rod moving out and in, extend the service life of the guide rod sealing device, and ensure the sealing between the insulating member and the guide rod; the guide rod sealing device is fixed to the horizontal cover plate by a fixing cylinder and a magnetic fixing column installed below the fixing groove, and the horizontal movement of the sealing device is limited by the fixing cylinder, and the vertical movement of the guide rod sealing device is limited by the magnetic fixing column. The guide rod sealing device can be quickly removed by removing the magnetic fixing column. The guide rod sealing device is easy to replace and has the advantages of simple structure, long service life, good sealing effect, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a front view of the guide rod sealing device in the embodiment of the present invention;

[0016] Figure 2 A bottom view of a guide rod sealing device in an embodiment of the present invention;

[0017] Figure 3 is a general assembly diagram of a guide rod sealing device in an embodiment of the present invention;

[0018] Figure 4 It is a front structural schematic diagram of the fixing groove in an embodiment of the present invention;

[0019] Figure 5 It is a schematic diagram of the back structure of the fixing groove in an embodiment of the present invention;

[0020] Figure 6 It is a structural schematic diagram of a fixed cover in an embodiment of the present invention;

[0021] Figure 7 is a schematic structural diagram of a first insulating member in an embodiment of the present invention;

[0022] Figure 8 It is a schematic diagram of the assembly of the first insulating member and the fixing groove in an embodiment of the present invention;

[0023] Fig. 9 It is a schematic diagram of the structure of the tension spring in the embodiment of the present invention;

[0024] Fig.10 It is a structural schematic diagram of a magnetic fixing column in an embodiment of the present invention;

[0025] The serial numbers are as follows: 1 guide rod, 2 horizontal cover plate, 21 fixing hole, 3 fixing groove, 31 bottom plate, 32 cover plate fixing cylinder, 33 first through hole, 34 insulating member rotating fixed axis, 35 side baffle plate, 36 fixed cylinder, 4 fixed cover, 41 ear plate, 411 circular hole, 42 second through hole, 43 insulating member rotating fixed axis mounting hole, 44 side baffle plate, 45 cover plate, 5 first insulating member, 51 flexible insulating sealing member, 52 arc-shaped raised end, 53 fixing hole, 54 tension spring fixing column, 6 tension spring, 7 main cotter pin, 8 magnetic suction fixing column, 81 magnetic ring, 82 steel column, 83 buffer rubber pad, 84 eye bolt, 85 screw, 9 second insulating member, 10 side cotter pin. DETAILED DESCRIPTION

[0026] To make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the following is a brief description of the present invention in conjunction with the attached Figure 1-Figure 10 The present invention is further described in detail with reference to the accompanying drawings and specific embodiments.

[0027] The guide rod sealing device for a pre-baked anode aluminum electrolytic cell adopted in this embodiment is mainly composed of a fixing groove 3 and a fixing cover 4 assembled together and fixed by a magnetic fixing column 8, a main opening pin 7 and a side opening pin 11. The first insulating member 5 and the second insulating member 9 are installed in the groove body space formed by the two covering each other, and a tension spring 6 is connected between the first insulating member 5 and the second insulating member 9. The first insulating member 5 and the second insulating member 9 are kept in a state of being close together at the upper part and separated at the lower part under the tension of the tension spring 6.

[0028] The fixing groove 1 of this embodiment is composed of a bottom plate 31, a side baffle plate 35, a cover plate fixing cylinder 32, and an insulating member rotating fixed shaft 34. The bottom plate 31 is a door-shaped structure with one side opening, and its surface is divided into a left column area, a cross beam area, and a right column area. One end of the side baffle plate 35 is welded and fixed to the outer edges of the left column area, the cross beam area, and the right column area of ​​the bottom plate 31. Ear plates are respectively provided on the outer walls of the left column area and the right column area. The two ear plates are provided with a cover plate fixing cylinder 32 for connecting with the fixing cover 4, and the cover plate fixing cylinder 32 is provided with a mounting hole for connecting with the side opening pin 10. The left column area and the right column area are provided with a first through hole 33, and the two through holes are symmetrical. The insulating member rotating fixed shaft 34 is welded at the intersection of the two cross beam areas and the column area, and the two insulating member rotating fixed shafts 34 are symmetrically arranged. The free ends of the insulating member rotating fixed shafts 34 are respectively provided with mounting holes for connecting with the main opening pin 7. A fixing cylinder 36 is also provided at the bottom of the fixing groove 1. The fixing cylinder 36 is inserted into the fixing hole 21 on the horizontal cover plate 2 to position the fixing groove 1 on the horizontal cover plate 2, thereby limiting the horizontal movement of the guide rod sealing device.

[0029] The fixed cover 4 of this embodiment is composed of a cover plate 45, a side baffle plate 44 and two ear plates 41. The cover plate 45 is a door-shaped structure adapted to the shape of the fixed groove 3, and its surface also includes a left column area, a crossbeam area and a right column area. The side baffle plate 44 is welded and fixed to the outer edge of the lower surface of the cover plate 41 and matches the side baffle plate 35 of the fixed groove 3. The side baffle plate 44 of the fixed cover 4 is buckled on the outer side of the side baffle plate of the fixed groove 3, so that the left and right sides of the groove space formed after the fixed cover 4 and the fixed groove 3 are closed to prevent foreign matter from entering the guide rod sealing device from the side. The two ear plates 41 are respectively welded and fixed on the outer sides of the left column area and the right column area and are flush with the upper surface of the cover plate 4. Each ear plate 41 is provided with a circular hole 411 for matching the cover plate fixing cylinder 32 on the fixed groove 3. Insulation member rotation fixing shaft mounting holes 43 are respectively provided at the intersection of the cross beam area and the left column area, and at the intersection of the cross beam area and the right column area on the cover plate 45, and match with the insulation member rotation fixing shaft 34 on the fixing groove 3. A second through hole 42 is respectively provided in the middle of the left column area and the middle of the right column area of ​​the cover plate, corresponding to the position of the first through hole 33 on the fixing groove 3.

[0030] When the fixed cover 4 is assembled on the fixed groove 3, the insulating member rotating fixed shaft 34 passes through the insulating member rotating fixed shaft mounting hole 43 and is fixed by the main cotter pin 7, so that the fixed cover 4 is positioned above the fixed groove 3. The cover plate fixing cylinder 32 passes through the circular hole 411 on the fixing cover ear plate 41 to connect the fixed cover 4 and the fixed groove 3 together.

[0031] After the fixing cover 4 is installed on the fixing groove 3, a groove space is formed between the two. The first insulating member 5 and the second insulating member 9 of this embodiment have the same structure, both of which are L-shaped, made of SMC material, and have a hard texture. The first insulating member 5 is mainly composed of an arc-shaped protruding end 52 and a longitudinal connecting end, that is, the first insulating member 5 and the second insulating member 9 are symmetrically arranged to form a door-shaped structure adapted to the shape of the fixing groove 3. The L-shaped corner of the first insulating member 5 is provided with a fixing hole 53 for matching and installing with the insulating member rotating fixed axis 34 of the fixing groove 3. After installation, the first insulating member 5 can rotate around the fixed axis. The arc-shaped protruding end 5 at the front end of the first insulating member can prevent the two adjacent insulating seals from interfering with each other when rotating. The arc-shaped protruding end 52 protrudes about 5mm from the inner side of the insulating member toward the guide rod. When the anode guide rod group is installed, the guide rod 1 will contact the arc-shaped protruding end 52 and push the two insulating members to rotate toward the guide rod 1 to achieve sealing. An L-shaped flexible insulating seal 51 is also connected to the inner wall of the longitudinal connecting end. After passing the L corner, the flexible insulating seal 51 continues to extend and connects to the initial end of the outer wall of the arc-shaped raised end 52. The flexible insulating seal 51 contacts the outer wall of the guide rod 1, which is conducive to forming a better seal with the guide rod 1.

[0032] Tension spring fixing columns 54 are respectively provided on the outside of the corners of the first insulating member 5 and the second insulating member 9. A tension spring 6 is installed between the two tension spring fixing columns 54, which serves to make the two insulating members always have a rotation tendency of the upper part (beam area) approaching and the lower part (column area) separating. When the anode guide rod group is lifted off the electrolytic cell, the guide rod 1 will be away from the arc-shaped protruding end of the first insulating member 5, and the two insulating members rotate under the action of the tension spring 6. The lower part (column area) of the insulating member is in a separated state, that is, it rotates away from the guide rod 1, providing more space for the lifting and lifting of the anode guide rod group. A fixing hole 53 is also provided on the surface of the corner of the first insulating member 5 and the second insulating member 9. The rotating fixing shaft 34 of the insulating member on the fixing groove 3 passes through the above-mentioned fixing hole 53 and is fixed by the main cotter pin 7. After the fixing cover 4 is installed on the upper part of the fixing groove 3, the insulating seal is fixed, which can prevent foreign matter from entering the sealing device to the greatest extent to affect the normal operation of the device and effectively extend its service life.

[0033] The fixing groove 3 and the fixing cover 4 are fixed by a magnetic fixing column 8 passing through the first through hole 33 and the second through hole 42 to limit the vertical movement of the guide rod sealing device. The magnetic fixing column 8 of this embodiment is composed of a magnetic ring 81, a steel column 82, a flanged eyebolt 84, and a buffer rubber pad 83. Threaded holes are provided at both ends of the steel column 82, and the magnetic ring 81 is provided with a countersunk screw hole. The magnetic ring 81 is fixed to one end of the steel column 82 by a screw 85, and the eyebolt 84 with a flange is installed on the other end of the steel column 82. The magnetic fixing column 8 passes through the through holes on the fixing groove 3 and the fixing cover 4, and the magnetic ring 81 is adsorbed on the horizontal cover plate 2. The flange of the eyebolt 84 is larger than the through holes provided in the fixing groove 3 and the fixing cover 4, and a buffer rubber pad 83 is provided between the flange and the fixing cover 4. The magnetic fixing column 8 has a flange at one end, and the other end is adsorbed on the horizontal cover plate 2 to fix the guide rod 1 sealing device to the horizontal cover plate 1. When the guide rod sealing device needs to be disassembled, it is only necessary to disassemble the magnetic fixing column 8.

[0034] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A guide rod sealing device for a prebaked anode aluminum electrolytic cell, characterized in that: The invention mainly comprises a fixing groove (3) and a fixing cover (4) which are assembled together. A first insulating member (5) and a second insulating member (9) are installed in a groove body space formed by the two members being covered together. The first insulating member (5) and the second insulating member (9) are rotatably connected to the fixing groove (3) and their edges protrude outside the groove body space and contact the outer wall of the anode guide rod. The first insulating member (5) and the second insulating member (9) rotate in a direction close to the anode guide rod as the anode guide rod moves, thereby sealing the contact portion between the anode guide rod and the fixing groove (3). A tension spring (6) is also connected between the first insulating member (5) and the second insulating member (9) so that the upper parts of the first insulating member (5) and the second insulating member (9) are brought together and the lower parts are separated.

2. A guide rod sealing device for a prebaked anode aluminum electrolytic cell according to claim 1, characterized in that: The fixing groove (3) is composed of a bottom plate (31), a side baffle plate (35), a fixing cylinder (36), a cover plate fixing cylinder (32) and an insulating member rotation fixing shaft (34); the side baffle plate (35) is welded and fixed to the outer edge of the upper surface of the bottom plate (31); a cover plate fixing cylinder (32) for connecting to the fixing cover (4) is provided on the ear plate of the outer wall of the side baffle plate (35); and a mounting hole for connecting to the side cotter pin is provided on the cover plate fixing cylinder (32); the bottom plate (31) is also symmetrically provided with a first through hole (33) and an insulating member rotation fixing shaft (34); and the free ends of the insulating member rotation fixing shaft (34) are respectively provided with mounting holes for connecting to the main cotter pin (7); and the fixing cylinder (36) is provided at the bottom of the fixing groove (3) and matches the fixing hole (21) on the horizontal cover plate (2).

3. A guide rod sealing device for a prebaked anode aluminum electrolytic cell according to claim 1, characterized in that: The fixed cover (4) is composed of a cover plate (45), a side baffle plate (44) and an ear plate (41). The side baffle plate (44) is welded and fixed to the outer edge of the lower surface of the cover plate (45). The side baffle plate (44) of the fixed cover (4) is buckled on the outer side of the side baffle plate (35) of the fixing groove (3). The ear plate (41) fixed to the cover plate (45) is provided with a circular hole (411) for matching with the cover plate fixing cylinder (32) on the fixing groove (3). The cover plate (45) is respectively provided with insulating member rotating fixed shaft mounting holes (43) matching with the insulating member rotating fixed shaft (34) on the fixing groove (3). The cover plate (45) is also provided with a second through hole (42) corresponding to the position of the first through hole (33) on the fixing groove (3).

4. A guide rod sealing device for a prebaked anode aluminum electrolytic cell according to claim 1, characterized in that: The first insulating member (5) is composed of an arc-shaped protruding end (52) and a longitudinal connecting end, the arc-shaped protruding end (52) protruding outward from the slot space, the flexible insulating seal (51) being arranged on the inner wall of the first insulating member (5), and the flexible insulating seal (51) extending from the inner side wall of the longitudinal connecting end to the initial end of the outer side wall of the arc-shaped protruding end (52), and a tension spring fixing column (54) for connecting the tension spring (6) is also arranged on the outer end wall of the longitudinal connecting end.

5. A guide rod sealing device for a prebaked anode aluminum electrolytic cell according to claim 1, characterized in that: The fixing groove (3) and the fixing cover (4) are fixed by rotating the fixing shaft (34) and the cover fixing cylinder (32) through the insulating member on the fixing groove (3) and by means of the side cotter pin (10) and the main cotter pin (7); The fixing cylinder (36) installed below the fixing groove (3) cooperates with the fixing hole (21) on the horizontal cover plate (2) to limit the horizontal movement of the guide rod sealing device; the magnetic fixing column (8) installed on the fixing groove (3) is adsorbed on the horizontal cover plate (2) to limit the vertical movement of the guide rod (1) sealing device.

6. A guide rod sealing device for a prebaked anode aluminum electrolytic cell as claimed in claim 5, characterized in that: The magnetic fixing column (8) is mainly composed of a magnetic ring (81), a steel column (82) and a lifting eye bolt (84) with a flange. The magnetic ring (81) is connected to the bottom of the steel column (82), and the lifting eye bolt (84) is connected to the top of the steel column (82). The flange of the lifting eye bolt (84) is larger than the diameter of the first through hole (33) of the fixing groove (3) and the diameter of the second through hole (42) on the fixing cover (4).

7. A guide rod sealing device for a prebaked anode aluminum electrolytic cell as claimed in claim 6, characterized in that: A buffer rubber pad (83) is provided between the flange and the fixing cover (4).

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