Heating device for processing lead belt of lead-acid storage battery

Abstract

The utility model discloses a heating device for treating a lead belt of a lead-acid storage battery. The heating device comprises a heating box body and a conveying device for conveying the lead belt to be treated into and out of the heating box body, thermocouples are arranged on the periphery of the heating box body, heating pipes are evenly distributed on the front side and the rear side of the heating box body, two fans are symmetrically installed on the top of the heating box body, a door opening is formed in one side of the heating box body, and a sealing door is hung at the door opening through a gantry system. The gantry system comprises a linear steel cable, a support and a fixed pulley, the fixed pulley is installed on the support, the gantry system further comprises a motor system used for driving the fixed pulley to rotate, one end of the linear steel cable is connected with the sealing door, the other end of the linear steel cable is a fixed end, the fixed end is fixed to the fixed pulley, and the linear steel cable close to the fixed end is wound around the surface of the fixed pulley. By heating the lead belt, the internal stress of the lead belt can be eliminated, and the corrosion resistance of the lead belt is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lead-acid batteries, and in particular relates to a heating device for a lead strip. Background Art

[0002] When the positive lead strip used in lead-acid batteries is rolled, as the deformation increases, the original equiaxed grains are gradually stretched along the rolling direction, and the crystal form gradually changes from equiaxed crystals to long strips. The greater the deformation, the more significant the degree of grain elongation. When the deformation is large, the grain boundaries become blurred, and the grains are difficult to distinguish, showing a fibrous stripe, called fibrous structure. During the deformation process, as the degree of deformation increases, the strength and hardness of the lead strip increase significantly, and the plasticity decreases rapidly. In addition, due to the cracks and voids generated after rolling, the dislocation density and resistance increase. On the other hand, due to cold deformation rolling, the internal residual stress and internal storage energy of the lead strip increase.

[0003] The positive lead strip will generate residual internal stress during the above-mentioned rolling process, including ① macroscopic residual internal stress caused by uneven deformation of various parts of the metal material; ② microscopic residual internal stress generated between grains due to uneven deformation of each grain; ③ lattice distortion stress caused by increased crystal defects such as dislocations and vacancies after plastic deformation of the metal, and lattice distortion caused by the deviation of some atoms in the crystal from the equilibrium position. These residual stresses lead to an increase in the internal storage energy of the lead strip, increase the chemical instability of the lead strip, and cause a decrease in the corrosion resistance of the lead strip and the punched grid. Summary of the invention

[0004] The utility model aims to overcome the above-mentioned shortcomings of the prior art and to provide a heating device for treating lead strips of lead-acid batteries, which can eliminate internal stress and improve the corrosion resistance of the lead strips.

[0005] The technical solution of the utility model is: it includes a heating box and a conveying device for conveying the lead strip to be processed into and out of the heating box; the heating box is provided with thermocouples all around, the heating tubes are evenly distributed on the front and rear sides of the heating box, two fans are symmetrically installed on the top of the heating box, one side of the heating box is a door opening, and the sealed door is hoisted at the door opening through a gantry system; the gantry system includes a linear steel cable, a bracket, and a fixed pulley, the fixed pulley is installed on the bracket, the gantry system also includes a motor system for driving the fixed pulley to rotate, one end of the linear steel cable is connected to the sealed door, the other end of the linear steel cable is a fixed end, the fixed end is fixed on the fixed pulley, and the linear steel cable close to the fixed end is wound around the surface of the fixed pulley.

[0006] The conveying device comprises a track, a pulley block arranged on the track, and a table arranged on the pulley block for placing the lead tape to be processed.

[0007] The track comprises an inner track located inside the heating box and a track located outside the heating box, and the inner track is connected to the track; the pulley block comprises a plurality of pulleys arranged in sequence on the track.

[0008] The transmission device also includes a transmission assembly for driving the pulley to rotate forward and reversely, and a motor connected to the transmission assembly.

[0009] It also includes an electric cabinet control system, which is connected to the motor, the motor system, the heating tube, and the fan motor through a power line, and the fan motor is connected to the fan.

[0010] The track is bolted to the ground.

[0011] There is a socket under the table that fits a forklift.

[0012] The inventors have found that when the positive lead strip after cold deformation and rolling is heated, it undergoes three stages of recovery, recrystallization, and grain growth. In the recovery stage, the microstructure of the lead strip is still fibrous, with no visible changes; in the recrystallization stage, the deformed grains grow through nucleation and gradually transform into new equiaxed grains without distortion; in the grain growth stage, the grain boundaries move, the grains coarsen, and reach a relatively stable size and shape. When the positive lead strip is heated, due to recovery, the vacancies of the atoms move, and the vacancies combine with other defects to reduce the internal point defect density, which can eliminate the first type of internal stress and partially eliminate the second and third types of internal stress.

[0013] In order to eliminate internal stress and improve the corrosion resistance of the lead strip, the utility model provides a heating device for treating the lead strip of a lead-acid battery, which has certain practical reference value for battery enterprises to further improve production and enhance research and development. When heating the lead strip, first place the lead strip on the table, start the electric cabinet control system, and the table slowly enters the heating box through the track. When the table is completely entered, the gantry system closes the sealed door through the linear steel cable, bearings and pulleys, and motor system, and then controls the operation of the fan through the motor to ensure that the heat released by the heating tube in the heating box is evenly dispersed. Set the heating rate, insulation temperature and time on the interface of the electric cabinet control system. When the set temperature is reached, heat the lead strip. Due to recovery, the vacancies of atoms move, and the vacancies are combined with other defects to reduce the density of internal point defects, which can eliminate the first type of internal stress and partially eliminate the second and third types of internal stress. After the heating is completed, start the gantry system to open the sealed door through the linear steel cable, bearings and pulleys, and motor system. At the same time, the table moves the lead strip to the outside through the track in the box for natural cooling, thereby completing the heating treatment of the lead strip. The above treatment can eliminate the internal stress of the lead strip and improve the corrosion resistance of the lead strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] In the figure: 1. Electric cabinet control system; 2. Power cord; 3. Heating box; 4. Track inside the box; 5. Pulley; 6. Heating tube; 7. Fan motor; 8. Fan; 9. Gantry system, 10. Sealing door; 11. Lead belt; 12. Track; 13. Table top. DETAILED DESCRIPTION

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, all other embodiments obtained without creative work are within the scope of protection of the present utility model.

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0018] like Figure 1 As shown, there are thermocouples around the heating box 3, which can detect the temperature inside the box in real time to ensure that the lead belt is heated evenly. The track 12 is fixed to the ground by bolts to ensure that the lead belt 11 runs stably on the table 13. The heating tubes 6 are evenly distributed on the front and back sides of the heating box 3 to ensure that the lead belt inside the heating box is heated evenly. The fan 8 is located at the top of the heating box 3, and the two are installed symmetrically to ensure that the heat inside the heating box is evenly dispersed; the pulleys 5 are evenly distributed at the bottom of the table 13 in the front, middle and back to ensure that the track 12 is evenly stressed during the operation of the lead belt 11 on the table 13. One end of the linear steel cable 91 is connected to the sealing door 10, and the other end of the linear steel cable 91 is a fixed end, which is fixed on the fixed pulley 93, and the linear steel cable 91 close to the fixed end is wound around the surface of the fixed pulley 93. The motor system 94 drives the fixed pulley 93 to rotate.

[0019] When heating the lead strip 11, first place the lead strip 11 on the table 13, start the electric cabinet control system 1, and the table 13 slowly enters the heating box 3 through the track 12. When the table 13 is completely entered, the gantry system 9 closes the sealed door 10 through the linear steel cable 91, the bracket 92, the pulley 93, and the motor system 94, and then controls the operation of the fan 8 through the fan motor 7 to ensure that the heat released by the heating tube 6 in the heating box is evenly dispersed. The heating rate, insulation temperature and time are set on the interface of the electric cabinet control system 1. When the set temperature is reached, When the lead strip is heated, the vacancies of atoms move due to recovery. The vacancies combine with other defects to reduce the density of internal point defects, which can eliminate the first type of internal stress and partially eliminate the second and third types of internal stress. After the heating is completed, the gantry system 9 is started to open the sealing door 10 through the linear steel cable 91, bearing 92, pulley 93 and motor system 94. At the same time, the table 13 moves the lead strip to the outside through the track 4 in the box for natural cooling, thereby completing the heating treatment of the lead strip. The above treatment can eliminate the internal stress of the lead strip and improve the corrosion resistance of the lead strip.

Claims

1. A heating device for treating lead strips of lead-acid batteries, characterized in that: The invention comprises a heating box (3) and a conveying device for conveying a lead strip to be processed into and out of the heating box (3); the heating box (3) is provided with thermocouples on all sides, the heating tubes (6) are evenly distributed on the front and rear sides of the heating box (3), two fans (8) are symmetrically installed on the top of the heating box (3), one side of the heating box (3) is a door opening, and a sealed door (10) is hoisted at the door opening via a gantry system (9); the gantry system (9) comprises a linear steel cable (91), a bracket (92), and a fixed pulley (93), the fixed pulley (93) being mounted on the bracket (92), the gantry system (9) further comprising a motor system (94) for driving the fixed pulley (93) to rotate, one end of the linear steel cable (91) being connected to the sealed door (10), the other end of the linear steel cable (91) being a fixed end, the fixed end being fixed on the fixed pulley (93), and the linear steel cable (91) close to the fixed end being wound around the surface of the fixed pulley (93).

2. The heating device for treating lead strip of lead-acid battery according to claim 1, characterized in that: The conveying device comprises a track, a pulley block placed on the track, and a table (13) placed on the pulley block for placing the lead strip to be processed.

3. The heating device for treating lead strip of lead-acid battery according to claim 2, characterized in that: The track comprises an inner track (4) located in the heating box (3) and a track (12) located outside the heating box (3), the inner track (4) and the track (12) being butted against each other; the pulley block comprises a plurality of pulleys (5) arranged in sequence on the track.

4. The heating device for treating lead strip of lead-acid battery according to claim 3, characterized in that: The transmission device further comprises a transmission assembly for driving the pulley (5) to rotate forward and reverse, and a motor connected to the transmission assembly.

5. The heating device for treating lead strip of lead-acid battery according to claim 4, characterized in that: It also includes an electric cabinet control system, which is connected to the motor, the motor system (94), the heating tube (6), and the fan motor (7) via a power line, and the fan motor (7) is connected to the fan (8).

6. The heating device for treating lead strip of lead-acid battery according to claim 1, characterized in that: The rail (12) is fixed to the ground by bolts.

7. The heating device for treating lead strip of lead-acid battery according to claim 1, characterized in that: There is a socket for a forklift under the table top (13).

Images