CN217600859U - Guide rod clamping device and corresponding aluminum electrolysis cell - Google Patents

Abstract

The utility model provides a guide rod clamping device for an aluminum electrolysis cell, which comprises a pressing block, a clamping rod and a clamping rod, wherein the pressing block is configured to be suitable for being installed on a cell frame of the aluminum electrolysis cell and suitable for being installed on the upper side of a bus of the aluminum electrolysis cell; and a driving mechanism configured to drive the pressing block to horizontally reciprocate to clamp the guide bar to the cell frame during the operation of lifting the busbar and to release the guide bar during the electrolysis operation. According to the scheme, the guide rod clamping device can be installed on a cell frame structure at the upper part of the aluminum electrolysis cell, the guide rod is temporarily fastened during the operation of lifting the bus, and compared with the condition that an independent large bus lifting device is adopted in the prior art, the device is obviously simplified, the cost is reduced, and the operation and the maintenance are easy. Through the translation briquetting, utilize the static friction power between briquetting and the guide arm to compress tightly the guide arm, simple structure is reliable, easily operation and maintenance.

Description

Guide rod clamping device and corresponding aluminum electrolysis cell

Technical Field

The utility model relates to the technical field of electrolytic aluminum, in particular to a guide rod clamping device for clamping an anode guide rod during the operation of lifting a bus and an aluminum electrolytic cell comprising the guide rod clamping device.

Background

In the production of electrolytic aluminum, a suspended carbon block is used as an anode, a carbon block arranged at the bottom of a tank is used as a cathode, the electrolytic reaction is carried out on the molten aluminum oxide in the tank, and aluminum liquid is formed in the tank. As the reaction proceeds, the anode carbon block is continuously consumed, and the carbon block is required to be gradually lowered while power supply is maintained, so as to supplement the anode carbon block participating in the reaction. Generally, the anode carbon block is arranged at the lower end of an aluminum guide rod, the middle part of the aluminum guide rod is clamped to a bus bar (a plate-shaped confluence structure) through a fixing clamp, and an anode lifting mechanism arranged on an electrolytic cell drives the bus bar to descend so as to drive the anode carbon block to descend. When the bus bar is lowered to the lower limit position, it is necessary to raise the bus bar to the upper limit position while keeping the aluminum guide bar stationary, so that the carbon block can be further lowered, which is a so-called "bus bar raising" operation.

In the prior art, separate busbar lifting devices are typically used to assist the "busbar lifting" operation. The bus bar lifting device is provided with a guide rod clamping device and a clamp screwing device. The bus lifting device is transported to the position above an electrolytic cell needing to lift the bus through a crown block, the guide rod clamping device is aligned to the corresponding guide rod and clamps the upper end of the guide rod, then the clamp screwing device is operated to release the fixing clamp between the bus and the guide rod, at the moment, the position of the guide rod is kept unchanged, the bus lifting mechanism on the electrolytic cell is started to enable the bus to ascend to the upper limit position, then the clamp screwing device is operated to screw the fixing clamp again, the guide rod clamping device is released, and one-time bus lifting operation is completed. In this kind of prior art, need to set up solitary generating line hoisting device, the structure is very complicated, and the investment is big moreover, and the maintenance cost is high.

How to reliably realize the busbar lifting operation with low cost and high efficiency by utilizing the structure of the electrolytic cell without using a busbar lifting device is an urgent problem to be solved in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art at least, and providing a guide rod clamping device which can be integrated in an aluminum electrolytic cell and the aluminum electrolytic cell adopting the guide rod clamping device, thereby simplifying the structure of the device and reducing the cost.

In a first aspect, there is provided a guide bar clamping arrangement for an aluminium electrolysis cell comprising: a compact configured to be mounted to a cell frame of an aluminum electrolysis cell and adapted to be mounted on an upper side of a busbar of the aluminum electrolysis cell; and a driving mechanism configured to drive the pressing block to horizontally reciprocate to clamp the guide bar to the cell frame during the operation of lifting the busbar and to release the guide bar during the electrolysis operation.

According to the scheme, the guide rod clamping device can be installed on a cell frame structure at the upper part of the aluminum electrolysis cell, the guide rod is temporarily fastened during the operation of lifting the bus, and compared with the condition that an independent large bus lifting device is adopted in the prior art, the device is obviously simplified, the cost is reduced, and the operation and the maintenance are easy. And through the translation briquetting, utilize the stiction power between briquetting and the guide arm to compress tightly the guide arm, simple structure is reliable, easily operation and maintenance.

In some embodiments, the drive mechanism comprises a nut, a screw, and a support plate; the support plate is fixed to the side of the groove frame and used for supporting the nut; the front end of the screw rod is rotatably connected to the pressing block, the middle part of the screw rod is connected to the nut through threads, and the rear end of the screw rod is provided with a tool matching structure.

According to the scheme, the nut is abutted against the supporting plate through the rotation of the operating screw rod, and the pressing block is supported. The nut and screw rod has simple and reliable structure and convenient operation.

In some embodiments, the guide bar clamping arrangement comprises two support plates, each support plate having a groove; the nut is provided with two lugs extending outwards, each lug is arranged in a corresponding groove in a penetrating mode and is lapped on the bottom face of the groove, and when the rear side wall of the groove abuts against the lug, the nut is prevented from moving backwards.

According to the scheme, the groove can guide the nut to move along the bottom surface, the rear side wall of the groove can abut against the nut, and the nut and the screw rod provide supporting counter force for the pressing block at the front end. Other complex structures are not arranged on the supporting plate, the guiding and abutting effects are realized only through the grooves, and the structure is simple and reliable.

In some embodiments, on the upper side of the rear side wall of each recess, there is a protrusion projecting forwardly into the interior of the recess, at least part of the lug entering the space between the bottom surface of the recess and the lower surface of the protrusion when the lug abuts the rear side wall of the recess.

According to this solution, the bottom surface of the groove and the projection cooperate to limit the vertical displacement of the nut, so that the nut can withstand a sufficiently large torque from the screw, and it is converted into a pressing force applied to the press block, stabilizing the position of the holding rod.

In some embodiments, the two support plates are welded at their front ends to the sides of the channel frame, respectively, or the two support plates are fixedly connected to a cross plate that is fixed to the sides of the channel frame by threaded connections.

According to the scheme, the installation of the supporting plate can be conveniently realized through welding or threaded connection.

In some embodiments, the drive mechanism comprises a cylinder, or motor configured to pneumatically, hydraulically, or electrically drive the compact hold down guide to the cradle or the release guide.

According to the scheme, the operation of the air cylinder, the oil cylinder or the motor can be automatically controlled, and the automation of bus lifting operation is facilitated.

In some embodiments, the drive mechanism is mounted to the side of the channel frame by a mount such that the drive mechanism and the pressure block are on the same side of the guide bar.

According to the scheme, the driving mechanism can be simply and conveniently arranged on the cell frame, and the existing aluminum electrolysis cell structure is convenient to upgrade and reform.

In some embodiments, the drive mechanism is mounted to the channel frame such that the drive mechanism and the press block are located on both the inside and outside of the guide bar.

According to this solution, the drive mechanism can be integrated inside the tank rack, contributing to a simplified piping arrangement.

In some embodiments, an insulating plate is provided on the pressing surface of the press block for pressing the guide rod.

According to the scheme, the insulating plate separates the electrical contact between the pressing block and the guide rod, and when the pressing block is operated to carry out bus lifting operation in the live state of the guide rod or when the bus lifting operation is stopped for maintenance, no current is transmitted to the pressing block to damage the safety of operators.

In a second aspect, there is provided an aluminium electrolysis cell comprising: the upper side of the tank body is provided with a tank cover, and the upper side of the tank cover is provided with a tank frame; a bus bar which is installed in the tank frame in a lifting manner; the lower end of the guide rod is provided with an anode carbon block; a busbar clamping device mounted to the busbar, clamping the guide bar to the busbar during electrolysis operation, and releasing the guide bar during busbar lifting operation; a bar clamp, according to any of the preceding claims, mounted to the cell frame and on the upper side of the busbar clamp, clamping the bar to the cell frame during the busbar lifting operation and releasing the bar during the electrolysis operation.

According to the scheme, the bus clamping device and the guide rod clamping device can be matched to realize bus lifting operation, and the guide rod clamping device is installed on the groove frame instead of an independent bus lifting device, so that the equipment is obviously simplified, the cost is reduced, and the operation and the maintenance are easy; and the guide rod clamping device is arranged on the upper side of the bus clamping device, so that the space on the upper side is fully utilized, the guide rod clamping device is far away from the groove body below, the heat influence is small, and the normal work of the groove cover cannot be interfered.

Drawings

FIG. 1 is a schematic view showing a bus bar descending state of an aluminum electrolytic cell according to the present invention;

FIG. 2 is a schematic view showing the ascending state of the busbar of the aluminum electrolytic cell of the present invention;

FIG. 3 is a front view of the guide bar clamping arrangement of the first embodiment;

FIG. 4 is a side view of the guide bar clamping arrangement of the first embodiment;

FIG. 5 is a top view of the guide bar clamping arrangement of the first embodiment;

FIG. 6 is a side view of a portion of the aluminum reduction cell of the first embodiment;

FIG. 7 is a schematic view of a guide bar clamping arrangement of a second embodiment;

FIG. 8 is a schematic view of a guide bar clamping arrangement of a third embodiment.

Reference numerals: 100 aluminum electrolysis cell; 101 a trough body; 102 a tank cover; 103, a trough frame; 104 cathode carbon blocks; 105 a bus bar; 106 a guide rod; 107 bus bars; 108 anode carbon block; 109 a bus lifting device; 110 bus bar clamping devices; 200 guide rod clamping devices; 201, pressing a block; 202, a screw rod; 203 a nut; 204 a support plate; 205 a compression surface; a transverse plate 206; 207 a threaded connection; 208 grooves; 209 a lug; 210 an extension; 211 a main body; 212 an insulating plate; 210 air cylinders; 211 mounting elements.

Detailed Description

In order to make the purpose, scheme and advantage of the technical scheme of the utility model clearer, the drawings of the specific embodiment of the utility model will be combined hereafter, and the technical scheme of the embodiment of the utility model is clearly and completely described. Unless otherwise indicated, terms used herein have the ordinary meaning in the art. Like reference symbols in the various drawings indicate like elements.

Fig. 1 shows a schematic view of an aluminum electrolysis cell 100 of the present invention. The aluminum electrolysis cell 100 comprises a cell body 101, a cell cover 102 and a cell frame 103 which are arranged in sequence from bottom to top. The tank 101 contains molten aluminum oxide, cathode blocks 104 are provided on the peripheral wall and the bottom wall, the cathode blocks 104 are in contact with a lower bus bar 105, and the bus bar 105 is electrically connected to the negative electrode of the power supply. The tank cover 102 is disposed on the upper side of the tank body 101, and is used for sealing the internal space of the tank body 101, preventing the internal space from being interfered by the outside during the electrolysis operation, and preventing the gas in the electrolytic tank from overflowing outwards and blocking the heat from diffusing outwards. A trough frame 103 is erected above the trough body 101, forming a trough superstructure, which is mounted to the trough body 101 at both ends by uprights. The cell frame 103 is provided with bus bars 106, which are flat conductive members electrically connected to the positive electrode of the power supply, on both left and right sides thereof. The bus bar 106 is electrically contacted on its outside surface by a plurality of guide rods 107 arranged side by side in a depending manner, each guide rod 107 having mounted at its lower end an anode carbon block 108.

During the electrolysis operation, the aluminum salt is reduced to simple substance aluminum near the cathode carbon blocks 104, deposited at the bottom of the tank body 101 and can be extracted periodically; meanwhile, the carbon on the anode carbon block 108 is oxidized into carbon dioxide gas to be discharged, and the anode carbon block 108 is continuously consumed. To maintain the reaction continuously, the anode carbon block 108 is operated to descend continuously. For this purpose, a bus bar lifting device 109 is disposed on the cell frame 103 for driving the bus bar 106 to descend, and the bus bar lifting device 109 may adopt various known structures for realizing a lifting function, such as a motor-driven lead screw and a nut, and the present invention is not limited to the specific form of the bus bar lifting device 109. Further, a bus bar clamping device 110 for clamping the bus bar 107 to the bus bar 106 so that both can move together is provided on the outer surface of the bus bar 106. The busbar clamping device 110 may be a clamping device known in the art as a "capsule clamp", or may be other clamping devices, and the invention is not limited to the specific form of the busbar clamping device 110. Thus, when the bus bar 106 is lowered, the guide rod 107 and the anode carbon block 108 are driven to be lowered, and the current supply to the anode carbon block 108 is maintained.

After the electrolysis operation is performed for a while, the bus bar 106 is lowered to its lower limit position and cannot move further, at this time, the bus bar lifting operation is required, that is, the bus bar clamping device 110 is released, the bus bar 106 and the bus bar 107 are separated, the bus bar lifting device 109 is operated to lift the bus bar 106 to return to the upper limit position, as shown in fig. 2, and then the bus bar clamping device 110 is fastened again, and the next descending stroke of the bus bar 106 is started.

In order to temporarily fix the guide rod 107 during the bus bar lifting operation, the present invention provides a guide rod clamping device 200 disposed on the tank rack 103, which is matched with the bus bar clamping device 110 for the bus bar lifting operation.

As shown in fig. 1, during the process of the bus bar 106 being driven to descend by the bus bar lifting device 109, the guide bar clamping device 200 is in a release state, the guide bar 107 is not connected to the cell frame 103 and does not interfere with the movement of the bus bar 106, and at this time, the bus bar clamping device 110 is in a fastening state, and the bus bar 106 and the guide bar 107 are kept fixed and contacted.

As shown in fig. 2, during the process of the bus bar 106 being lifted by the bus bar lifting device 109, the guide bar clamping device 200 is in the fastening state, keeping the guide bar 107 fixed and in sliding contact with the bus bar 106, and at this time, the bus bar clamping device 110 is in the releasing state, and the guide bar 107 is not connected to the bus bar 106 and does not interfere with the movement of the bus bar 106.

The utility model discloses a guide arm clamping device 200 installs on cell frame 103, compares and sets up solitary generating line hoisting device's scheme among the prior art, is showing and is simplifying the structure, has reduced use and maintenance cost.

Moreover, the guide bar clamping device 200 is arranged on the upper side of the bus bar clamping device 110, but not on the lower side, so that the space on the upper side of the bus bar clamping device 110 can be fully utilized, and the guide bar clamping device 200 is convenient to install and operate; moreover, the guide rod clamping device 200 is far away from the groove body 101, and the influence of heat is small; in addition, the guide bar clamping device 200 is installed outside the cell cover 102, not inside, and does not need to open the cell cover 102 during operation, thereby facilitating the operation and maintaining the stability of the internal environment of the cell cover 102 without interfering with the progress of the electrolytic reaction.

The structure of the guide bar clamping device 200 of the present invention is described below. The guide rod clamping device 200 mainly comprises a pressing block 201 and a driving mechanism, wherein the driving mechanism can drive the pressing block 201 to horizontally reciprocate. When the busbar lifting operation is to be carried out, the pressing block 201 moves in the direction towards the guide rod 107, the guide rod 107 is pressed against the side surface of the groove frame 103, the position fixing of the guide rod 107 is realized, and the guide rod 107 maintains a constant vertical position under the action of static friction force and cannot fall; when the bus bar lifting operation is completed, the pressing piece 201 is moved in a direction away from the guide rod 107, the pressure applied to the guide rod 107 is released, and the guide rod 107 can be moved together with the bus bar 106. The drive mechanism may be a manually driven or a mechanism driven by means of an external tool, such as a screw; it may be an automatically controllable driving mechanism, such as a pneumatic, hydraulic, or motor-driven device.

Fig. 3, 4, 5 and 6 show schematic views of a guide rod clamping device 200 of a first embodiment, in which a screw is used to drive a press block.

As shown in fig. 3, the guide bar clamping device 200 includes a pressing block 201, a screw 202, a nut 203, and a support plate 204. The pressing piece 201 has a pressing surface 205 at its front end for pressing one side surface of the guide rod 107. The front end of the screw 202 is rotatably connected to the pressing block 201, and specifically, the front end portion of the screw 202 may extend into a mounting hole behind the pressing block 201 and be connected by a bearing. The middle portion of the screw 202 is threadedly connected to the nut 203. The rear end portion of the screw 202 has a hexagonal configuration that can be engaged with a screwing tool. Other forms of mating structures are also possible.

As shown in fig. 4 and 5, two support plates 204 are disposed on both sides of the nut 203, each of which is fixedly connected to the cell frame 103 of the aluminum reduction cell 100, for example, may be welded to a side plate of the cell frame 103, or may be mounted to the cell frame 103 by a screw connection. Fig. 6 shows an embodiment of a screw fastening, wherein a cross plate 206 is provided to connect two support plates 204, the cross plate 206 being fastened to the side plates of the trough frame 103 by means of screw connections 207.

The support plate 204 is mainly used to limit the position of the nut 203. As shown in fig. 3, the upper side of the support plate 204 is provided with a groove 208; as shown in fig. 4, the nut 203 has outwardly projecting lugs 209 on both sides thereof, and each lug 209 passes through the groove 208 of the support plate 204 on the corresponding side and rides on the bottom surface of the groove 208. As the screw 202 is screwed, the nut 203 will move backwards (to the left in fig. 3) until the rear side of the lug 209 abuts against the rear side wall of the groove 208, whereby the support plate 204 will prevent further movement of the nut 203 and provide a supporting counter force for the pressure piece 201 via the nut 203 and the screw 202.

On the upper side of the rear side wall of the recess 208, as shown in fig. 3, there is provided a protrusion 210 which protrudes forward into the recess 208. When the lug 209 abuts against the rear side wall of the groove 208, at least part of the lug 209 will enter below the protrusion 210, i.e. into the space between the bottom surface of the groove 208 and the lower surface of the protrusion 210, whereby the support plate 204 will limit the movement of the nut 203 in the vertical direction, enabling it to withstand a sufficient torque from the screw 202 and convert it into a supporting counter force in the horizontal direction.

As shown in fig. 4, the lugs 209 of the nut 203 project outwardly from both side edges of the body 211, and the body 211 may be chamfered to form an octagon having a threaded hole therein for engaging the screw 202. The two support plates 204 are close to the two side edges of the main body 211 with a small clearance so that the movement of the nut 203 can be guided in a substantially linear direction and the left-right lateral movement of the nut 203 is substantially restricted.

In addition, as shown in fig. 3, an insulating plate 212 is provided on the pressing face 205 of the compact 201, which may be bonded to the pressing face 205 by a high-temperature adhesive. Insulating plate 212 may obstruct electrical contact between compact 201 and guide rod 107. In this way, the pressing block 201 can be safely operated to press the guide rod 107 to perform the bus bar lifting operation without affecting the progress of the electrolytic reaction, with the guide rod 107 kept charged; even when the maintenance is shut down, the accidental current can be ensured not to be conducted to the pressing block 201, so that the electric shock danger is caused to the operating personnel.

Fig. 7 shows a schematic view of a guide bar clamping arrangement 200 of a second embodiment. The guide bar clamping apparatus 200 includes a pressing block 201, a cylinder 210, and a mounting member 211. The cylinder 210 is fixed to the side of the channel frame 130 by a mounting member 211 such that the cylinder 210 and the pressing block 201 are located on the same side of the guide rod 107. The output shaft of the cylinder 210 is connected to the pressure block 201. When the air cylinder 210 is pressurized and actuated, the pressing block 201 can be pushed to move towards the guide rod 107 and be pressed with the guide rod; when the air cylinder 210 is decompressed and released, the pressing block 201 releases the guide rod 107, and clamping is released.

Fig. 8 shows a schematic view of a guide bar clamping arrangement 200 of a third embodiment. The guide bar clamping apparatus 200 includes a pressing block 201 and a cylinder 210. The cylinder 210 is directly installed on the channel frame 130 such that the cylinder 210 and the pressing block 201 are located at both sides of the guide rod 107. The output shaft of the cylinder 210 is connected to the pressure block 201. When the cylinder 210 is pressurized and actuated, the drawable pressing block 201 moves towards the guide rod 107 and presses the guide rod; when the air cylinder 210 is decompressed and released, the pressing block 201 releases the guide rod 107, and clamping is released.

In other embodiments not shown, the cylinder in the embodiment of fig. 7 and 8 may be replaced by a cylinder, a motor, etc., and such replacement is obvious to those skilled in the art and also falls within the protection scope of the present invention.

Exemplary embodiments of the present invention have been described in detail herein with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various modifications and changes may be made to the specific embodiments described above without departing from the spirit of the present invention, and various combinations of the various features and structures presented in the present invention may be made without departing from the scope of the invention as defined in the appended claims.

Claims (10)

1. A guide bar clamping apparatus for an aluminium electrolysis cell, comprising:

a pressure block configured to be adapted to be mounted to a cell frame of an aluminum electrolysis cell and adapted to be mounted on an upper side of a busbar of the aluminum electrolysis cell;

and a driving mechanism configured to drive the pressing block to horizontally reciprocate to clamp the guide bar to the cell frame during the operation of lifting the busbar and to release the guide bar during the electrolysis operation.

2. The guide bar clamping device of claim 1,

the driving mechanism comprises a nut, a screw and a supporting plate;

the support plate is fixed to the side of the groove frame and used for supporting the nut;

the front end of the screw rod is rotatably connected to the pressing block, the middle part of the screw rod is connected to the nut through threads, and the rear end of the screw rod is provided with a tool matching structure.

3. The guide bar clamping device of claim 2,

the guide rod clamping device comprises two supporting plates, and a groove is formed in each supporting plate;

the nut is provided with two lugs extending outwards, each lug is arranged in a corresponding groove in a penetrating mode and is lapped on the bottom face of the groove, and when the rear side wall of the groove abuts against the lug, the nut is prevented from moving backwards.

4. The guide bar clamping device of claim 3,

on the upper side of the rear side wall of each recess, there is a protrusion projecting forwardly into the interior of the recess, at least part of the lug entering the space between the bottom surface of the recess and the lower surface of the protrusion when the lug abuts the rear side wall of the recess.

5. The guide bar clamping device of claim 3,

the two support plates are welded at their front ends to the sides of the channel frame, respectively, or,

the two support plates are fixedly connected to a transverse plate, and the transverse plate is fixed to the side face of the groove frame through a threaded connecting piece.

6. The guide bar clamping device of claim 1,

the driving mechanism comprises an air cylinder, an oil cylinder or a motor, and is configured to drive the pressing block to press the guide rod to the groove frame or release the guide rod pneumatically, hydraulically or electrically.

7. The guide bar clamping device according to claim 1 or 6,

the driving mechanism is installed on the side face of the groove frame through the installation piece, so that the driving mechanism and the pressing block are located on the same side of the guide rod.

8. The guide bar clamping device of claim 1 or 6,

the driving mechanism is installed on the groove frame, so that the driving mechanism and the pressing block are located on the inner side and the outer side of the guide rod.

9. The guide bar clamping device according to any one of claims 1 to 6,

and an insulating plate is arranged on the pressing surface of the pressing block for pressing the guide rod.

10. An aluminum electrolysis cell, comprising:

the upper side of the tank body is provided with a tank cover, and the upper side of the tank cover is provided with a tank frame;

a bus bar installed to the tank frame so as to be movable up and down;

the lower end of the guide rod is provided with an anode carbon block;

a busbar clamping device mounted to the busbar, clamping the guide bar to the busbar during electrolysis operation, and releasing the guide bar during busbar lifting operation;

guide bar clamping means mounted to the cell frame on the upper side of the busbar clamping means for clamping the guide bar to the cell frame during busbar lifting operations and for releasing the guide bar during electrolysis operations, according to any one of claims 1 to 9.

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