Lead supply system used in grid continuous casting

Abstract

The utility model belongs to the field of storage battery processing equipment, and particularly relates to a lead supply system used in grid continuous casting, which comprises a mounting seat and a lead melting pot arranged in the mounting seat, the lead melting pot is positioned in a combustion chamber on the mounting seat, a combustor and a smoke exhaust pipe are arranged on the combustion chamber, and the smoke exhaust pipe is communicated with the mounting seat. The combustion end of the combustor and the smoke inlet of the smoke exhaust pipe are both located in the combustion chamber and located on the same side of the lead melting pot, heat provided by the combustor is more fully utilized by the lead melting pot, heat loss is reduced, and therefore the using amount of fuel is reduced, and economic benefits are improved.

Description

Technical Field

[0001] The utility model belongs to the field of battery processing equipment, and in particular relates to a lead supply system used in grid continuous casting. Background Art

[0002] The grid is the main component of the lead-acid battery. There are two production methods: drawing and casting. In casting, the heated and melted lead liquid is extracted and supplied to the fixed mold through a liquid supply pipe with a relatively thin diameter. The fixed mold continuously supplies liquid to the movable mold with a grid to form the grid. However, there are the following problems in the existing lead supply system: the inlet of the burner and the exhaust pipe on the combustion chamber of the lead melting furnace are respectively located on the side of the lead melting pot and are arranged almost along the radial direction of the lead melting pot. The burner enters the combustion chamber and is located at the bottom of the lead melting pot for combustion and heating. The exhaust pipe discharges the smoke generated by the combustion in the combustion chamber. The smoke carries the hot air and moves along the direction of the flame. The distance from the burner to the exhaust pipe is relatively close. The air temperature at the exhaust pipe is relatively high. The hot air there is discharged before heating the lead melting pot in time. The utilization rate of heat by the lead melting pot is low, resulting in fuel waste and high production costs. Utility Model Content

[0003] In order to solve the problems existing in the above-mentioned prior art, the utility model provides a lead supply system for grid continuous casting, so that the heat provided by the burner can be more fully utilized by the lead melting pot, reducing heat loss, thereby reducing the amount of fuel used and improving economic benefits.

[0004] The specific technical solution adopted by the utility model is:

[0005] The lead supply system used in grid continuous casting includes a mounting seat and a lead melting pot arranged in the mounting seat. The lead melting pot is located in a combustion chamber on the mounting seat. A burner and a smoke exhaust pipe are arranged on the combustion chamber. The key point is that the combustion end of the burner and the smoke inlet of the smoke exhaust pipe are both in the combustion chamber and on the same side of the lead melting pot.

[0006] Furthermore, a barrier wall is provided on one side of the combustion chamber, and the combustion end and the smoke exhaust pipe are respectively located on the left and right sides of the barrier wall.

[0007] Furthermore, the barrier wall is a half wall made of refractory bricks and used to support the bottom of the lead melting pot, and the height of the barrier wall is lower than the height of the inner wall of the combustion chamber.

[0008] Furthermore, a refractory brick cavity is also provided in the combustion chamber, the lead melting pot is located in the refractory brick cavity, and the combustion end and the smoke exhaust pipe are respectively connected to the refractory brick cavity.

[0009] Furthermore, the lead supply system also includes a heat preservation pot, and the lead melting pot is connected to the heat preservation pot in sequence by means of a lead liquid connecting pipe and a guide groove.

[0010] Furthermore, the diversion trough is U-shaped or ∪-shaped, and an overflow plate is arranged on the bottom plate at the output end of the diversion trough, and the height of the overflow plate is lower than the side wall of the diversion trough.

[0011] Furthermore, the diversion trough is U-shaped or ∪-shaped, and a perforated spoiler is arranged on the bottom plate at the output end of the diversion trough.

[0012] Furthermore, the diversion trough includes a buffer section and a liquid outlet section communicated with the lead liquid connecting pipe, and the lead liquid forms an S-shaped or zigzag-shaped flow channel by means of the buffer section and the liquid outlet section.

[0013] Furthermore, a filter screen is arranged in the lead liquid connecting pipe, and the number of the filter screens ≥1.

[0014] Furthermore, a group of baffles and a group of heating pipes separated by the baffles are arranged at the bottom of the heat preservation pot, and through grooves are formed at the bottoms of the baffles.

[0015] The beneficial effects of the utility model are as follows:

[0016] In the utility model, the technical scheme of arranging the combustion end of the burner and the smoke inlet of the smoke exhaust pipe on the same side of the lead melting pot is adopted. The flame sprayed by the burner heats the bottom of the lead melting pot. Affected by the spraying pressure of the burner, the flue gas and part of the hot air with higher temperature move along the flame spraying direction. After being blocked by the inner wall of the combustion chamber, they diffuse in the combustion chamber and gradually meander to the smoke exhaust pipe and are discharged through the smoke exhaust pipe. The heating path of the hot air in the combustion chamber is prolonged, so that the hot air can contact with the lead melting pot more fully to heat the lead melting pot, reduce the fuel consumption for melting lead ingots of the same weight, and reduce the production cost. Description of the drawings

[0017] Figure 1 It is a structural schematic diagram of Embodiment 1;

[0018] Figure 2 It is an assembly schematic diagram of the refractory brick cavity and the lead melting pot in Embodiment 1;

[0019] Figure 3 For Figure 2 Top view;

[0020] Figure 4 For Figure 3 Cross-sectional view in the direction of A-A;

[0021] Figure 5 It is a structural schematic diagram of the heat preservation pot;

[0022] In the accompanying drawings, 1. mounting base, 11. burner, 111. combustion end, 12. smoke exhaust pipe, 13. barrier wall, 14. refractory brick cavity, 15. exhaust pipe, 2. lead melting pot, 21. first overflow pipe, 3. lead liquid connecting pipe, 4. insulation pot, 41. second overflow pipe, 5. guide groove, 51. overflow plate, 52. buffer section, 53. liquid outlet section, 6. heating tube, 9. baffle, 91. through groove. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0024] Embodiment 1, as Figure 1-5 As shown, the lead supply system used in grid continuous casting includes a mounting base 1 and a lead melting pot 2 arranged in the mounting base 1. The lead melting pot 2 is located in a combustion chamber on the mounting base 1. A burner 11 and a smoke exhaust pipe 12 are arranged on the combustion chamber. The key is that the combustion end 111 of the burner 11 and the smoke inlet of the smoke exhaust pipe 12 are both in the combustion chamber and located on the same side of the lead melting pot 2. The combustion end 111 and the smoke inlet of the smoke exhaust pipe 12 are arranged adjacent to each other on the combustion chamber. The gap between the side wall of the lead melting pot 2 and the inner wall of the combustion chamber is regarded as an annular heating channel, with the position of the combustion end 111 as the starting point and the position of the smoke exhaust pipe 12 as the end point. The path taken by the combustion end 111 moving from the combustion end 111 to the smoke exhaust pipe 12 in the heating channel is a major arc. The burner 11 is equipped with a fan, and the combustion end 111 sprays flames into the combustion chamber to heat the bottom of the lead melting pot 2. The position of the flame reaches at least 1 / 3 of the bottom of the lead melting pot 2. Under the pressure of the fan, part of the hot air and smoke continue to move forward along the flame spraying direction and are blocked by the side walls of the combustion chamber and then diffused in the combustion chamber. The air heated by the flame diffuses to the surroundings, and the hot air and smoke in the combustion chamber flow in a circuitous manner to the exhaust pipe 12 on the same side as the combustion end 111, which effectively increases the heating path of the hot air and smoke in the combustion chamber, so that the hot air and smoke can more fully exchange heat with the lead melting pot 2, and the temperature of the smoke discharged from the exhaust pipe 12 is significantly reduced, which effectively reduces heat loss, improves fuel utilization, and reduces the fuel consumption for melting lead ingots of the same weight, which helps to reduce production costs.

[0025] A barrier wall 13 is arranged on one side of the combustion chamber, and the combustion end 111 and the smoke exhaust pipe 12 are respectively located on the left and right sides of the barrier wall 13. The combustion end 111 and the smoke exhaust pipe 12 are arranged adjacent to the barrier wall 13. The barrier wall 13 is used to block the adjacent combustion end 111 and the smoke exhaust pipe 12, and the hot air at the combustion end 111 is blocked, so that the hot air can reach the smoke exhaust pipe 12 after bypassing the barrier wall 13, thereby preventing the high-temperature air at the combustion end 111 from directly spreading to the smoke exhaust pipe 12.

[0026] The barrier wall 13 is a half wall made of refractory bricks for supporting the bottom of the lead smelting pot 2. The height of the barrier wall 13 is lower than the height of the inner wall of the combustion chamber. The length of the barrier wall 13 at the bottom of the lead smelting pot 2 exceeds the length of the flame ejected from the combustion end 111. The barrier wall 13 supports the bottom of the lead smelting pot 2, making the installation of the lead smelting pot 2 more stable. At the same time, it blocks the hot air around the flame, so that the hot air around the flame diffuses around and then bypasses the barrier wall 13 to reach the smoke exhaust pipe 12, preventing the hot air that has not fully exchanged heat with the lead smelting pot 2 from being discharged from the smoke exhaust pipe 12, thereby reducing heat loss and further improving fuel utilization.

[0027] A refractory brick chamber 14 is also provided in the combustion chamber, the lead melting pot 2 is located in the refractory brick chamber 14, and the combustion end 111 and the smoke exhaust pipe 12 are respectively connected to the refractory brick chamber 14. A refractory brick chamber 14 made of refractory bricks is added in the combustion chamber to insulate the air heated by the burner 11, reduce the heat exchange between the hot air and the external environment, and further reduce the heat loss. The side wall of the refractory brick chamber 14 is in a truncated cone shape with a larger bottom and a smaller top, and the structure is more solid and reliable, providing a stable support for the lead melting pot 2. In order to prevent the pressure in the refractory brick chamber 14 from being too high, the present embodiment is provided with an exhaust pipe 15 with a valve thereon on the refractory brick chamber 14, and the gas in the refractory brick chamber 14 is discharged from the exhaust pipe 15 by opening the valve to relieve the pressure, thereby preventing the refractory brick chamber 14 from bursting.

[0028] The lead supply system also includes a heat preservation pot 4, and the lead melting pot 2 is connected with the heat preservation pot 4 in turn by means of the lead liquid connecting pipe 3 and the guide groove 5, wherein the lead liquid in the lead melting pot 2 flows into the guide groove 5 through the lead liquid connecting pipe 3, and flows to the heat preservation pot 4 under the guidance of the guide groove 5. The guide groove 5 is arranged horizontally, and the lead liquid connecting pipe 3 is located above the bottom plate of the guide groove 5. With the guidance of the guide groove 5, the flow distance of the lead liquid in the heat preservation pot 4 is extended, so that the lead liquid is far away from the lead supply pump for extracting the lead liquid to supply the fixed mold, and the lead liquid falls into the heat preservation pot 4 away from the lead supply pump, which is convenient for accurate temperature control of the lead liquid. A first overflow pipe 21 is arranged at the bottom of the lead melting pot 2, and a second overflow pipe 41 is arranged at the bottom of the heat preservation pot 4. After the work is completed, the first overflow pipe 21 and the second overflow pipe 41 are used to timely discharge the remaining lead liquid in the lead melting pot 2 and the heat preservation pot 4 to prevent the lead liquid from being adhered to the lead melting pot 2 or the heat preservation pot 4 after cooling.

[0029] The diversion chute 5 can be U-shaped or ∪-shaped. In this embodiment, the diversion chute 5 is of a ∪-shaped structure. An overflow plate 51 is provided on the bottom plate at the output end of the diversion chute 5, and the height of the overflow plate 51 is lower than that of the side wall of the diversion chute 5. During the flow in the diversion chute 5, due to the resistance of the diversion chute 5 and the blocking of the overflow plate 51, the flow rate of the lead liquid is slowed down, and the impact and turbulent flow of the lead liquid flowing out of the lead melting pot 2 on the lead liquid in the heat preservation pot 4 are prevented. It is ensured that the lead liquid does not directly rush into the heat preservation pot 4 to cause great disturbance to the existing lead liquid in the heat preservation pot 4, and it is avoided that the floating residues that may remain in the heat preservation pot 4 are taken down by the lead supply pump and pumped into the fixed mold, which may affect the quality of the grid.

[0030] The diversion chute 5 includes a buffer section 52 and a liquid outlet section 53 that are connected to the lead liquid connecting pipe. The lead liquid forms an S-shaped or zigzag-shaped flow channel through the buffer section 52 and the liquid outlet section 53. In this embodiment, the lead liquid flows from the lead liquid connecting pipe 3 to the buffer section 52 and the liquid outlet section 53 to form an S-shaped flow channel. The overflow plate 51 is located at the output end of the liquid outlet section 53; the lead liquid discharged from the lead liquid connecting pipe 3 flows along the S-shaped flow channel and is blocked by the side wall of the buffer section 52, reducing the kinetic energy of the lead liquid and further reducing the disturbance of the lead liquid to the lead liquid in the heat preservation pot 4.

[0031] A filter screen is provided in the lead liquid connecting pipe 3, and the number of filter screens ≥ 1. In this embodiment, 2 filter screens are arranged at intervals in the lead liquid connecting pipe 3 to fully filter the lead liquid passing through the lead liquid connecting pipe 3, and further improve the purity of the lead liquid flowing into the heat preservation pot 4.

[0032] A group of baffles 9 and a group of heating tubes 6 separated by the baffles 9 are provided at the bottom of the heat preservation pot 4. A through slot 91 is opened at the bottom of the baffle 9. The heating tube 6 is an electric heating tube, which can accurately control the heating temperature. The baffle 9 divides and blocks the heating tubes 6 to prevent the heating tubes 6 from moving under the lead liquid, making the installation of the heating tubes 10 more stable. The through slot 91 ensures that the lead liquid at the bottom of the heat preservation pot 4 is unobstructed, preventing the lead liquid from accumulating and remaining between the baffles 9.

[0033] Embodiment 2 is basically the same as Embodiment 1, except that a perforated baffle is provided on the bottom plate at the output end of the diversion chute 5, and there is no overflow plate 51. The height of the perforated baffle is the same as that of the side wall of the diversion chute 5. A group of through holes arranged in an array are provided on the perforated baffle, and the lead liquid uniformly and dispersedly flows into the heat preservation pot 4 through the through holes on the perforated baffle, facilitating the uniform heat exchange between the lead liquid flowing out of the diversion chute 5 and the lead liquid in the heat preservation pot 4, and ensuring that the temperature of the lead liquid in the heat preservation pot 4 quickly reaches uniformity.

Claims

1. A lead supply system for grid continuous casting, comprising a mounting seat (1), a lead melting pot (2) arranged in the mounting seat (1), the lead melting pot (2) being located in a combustion chamber on the mounting seat (1), the combustion chamber being provided with a burner (11) and a smoke exhaust pipe (12), characterized in that: The combustion end (111) of the burner (11) and the smoke inlet of the smoke exhaust pipe (12) are both inside the combustion chamber and on the same side of the lead melting pot (2).

2. The lead supply system for grid continuous casting according to claim 1, characterized in that: A partition wall (13) is provided on one side inside the combustion chamber. The combustion end (111) and the smoke exhaust pipe (12) are respectively located on the left and right sides of the partition wall (13).

3. The lead supply system for grid continuous casting according to claim 2, characterized in that: The partition wall (13) is a half-wall made of refractory bricks for supporting the bottom of the lead melting pot (2), and the height of the partition wall (13) is lower than the height of the inner wall of the combustion chamber.

4. The lead supply system for grid continuous casting according to claim 1, characterized in that: A refractory brick cavity (14) is also provided inside the combustion chamber. The lead melting pot (2) is located inside the refractory brick cavity (14), and the combustion end (111) and the smoke exhaust pipe (12) are respectively communicated with the refractory brick cavity (14).

5. The lead supply system for grid continuous casting according to claim 1, characterized in that: It further includes a heat preservation pot (4). The lead melting pot (2) is communicated with the heat preservation pot (4) in sequence through a lead liquid connecting pipe (3) and a diversion groove (5).

6. The lead supply system for grid continuous casting according to claim 5, characterized in that: The diversion groove (5) is in a U shape or a ∪ shape. An overflow plate (51) is provided on the bottom plate at the output end of the diversion groove (5), and the height of the overflow plate (51) is lower than the side wall of the diversion groove (5).

7. The lead supply system for grid continuous casting according to claim 5, characterized in that: The diversion groove (5) is in a U shape or a ∪ shape. A perforated flow disturbing plate is provided on the bottom plate at the output end of the diversion groove (5).

8. The lead supply system for grid continuous casting according to claim 5, characterized in that: The diversion groove (5) includes a buffer section (52) communicated with the lead liquid connecting pipe and a liquid outlet section (53). The lead liquid forms an S-shaped or zigzag flow channel through the buffer section (52) and the liquid outlet section (53).

9. The lead supply system for grid continuous casting according to claim 5, characterized in that: A filter screen is provided in the lead liquid connecting pipe (3), and the number of the filter screens ≥ 1.

10. The lead supply system for grid continuous casting according to claim 5, characterized in that: A group of baffles (9) and a group of heating pipes (6) separated by the baffles (9) are provided at the bottom of the heat preservation pot (4). A through groove (91) is provided at the bottom of the baffle (9).

Images