Centralized lead supply system for lead-acid storage battery

Abstract

The utility model discloses a centralized lead supply system for a lead-acid storage battery, which comprises a lead conveying pipe, the lead conveying pipe conveys lead liquid in the A direction, and the two ends of the lead conveying pipe are respectively connected with a plate casting machine lead pan and a material supply component, and the centralized lead supply system is characterized in that a heating component is arranged on the surface of the lead conveying pipe and consists of a plurality of electromagnetic coils; and the electromagnetic coil is connected with an external temperature control cabinet through a circuit. The heating temperature of the electromagnetic coils can be accurately controlled through an external temperature control cabinet, the temperature difference of all the electromagnetic coils is extremely small, the consistency of the temperature of the lead liquid can be better guaranteed, the viscosity of the alloy lead liquid is good, meanwhile, the lead slag rate in the lead liquid is reduced, and therefore the phenomenon that a lead conveying system is blocked due to poor lead supply is avoided, and the production quality of products is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery plate manufacturing, and in particular relates to a centralized lead supply system for lead-acid batteries. Background Art

[0002] The grid is an important component of the lead-acid battery plate. It is a lead-based alloy material and plays a vital role in the battery: first, as a carrier of active substances, it supports the skeleton and adheres to the active substances; second, as a conductor of current, it collects, converges and transports current; third, as a uniform fluid of the plate, it evenly distributes the current to the active substances.

[0003] According to the existing production process requirements, the lead liquid is kept in the range of 470-540℃ by centralized lead supply using heating tubes. However, this method consumes a lot of energy for heating and the temperature is unstable, which results in unstable temperature of the lead liquid and poor lead supply and high lead slag, which in turn makes the produced grid difficult to form and has unstable quality. Utility Model Content

[0004] The utility model aims to solve the problem that the centralized lead supply method of the heating tube in the prior art causes the lead liquid temperature to be unstable and the lead supply is not high, and the following technical solutions are proposed:

[0005] A centralized lead supply system for lead-acid batteries comprises: a lead delivery pipe, the lead delivery pipe delivers lead liquid in direction A, the two ends of the lead delivery pipe are respectively connected to the lead pot of a plate casting machine and a feeding assembly, a heating assembly is arranged on the surface of the lead delivery pipe, the heating assembly is composed of a plurality of electromagnetic coils, and the electromagnetic coils are connected to an external temperature control cabinet through a line.

[0006] As a preferred embodiment of the above technical solution, closed fixing plates are provided at both ends of the electromagnetic coil, a plurality of fixing buckles are circumferentially provided on the surface of the closed fixing plates, and the fixing buckles on two adjacent closed fixing plates match each other.

[0007] As a preferred embodiment of the above technical solution, a coating layer is provided on the outer surface of the heating component, and the coating layer consists of an outer winding layer and an inner insulation layer.

[0008] As a preferred embodiment of the above technical solution, an automatic lead supply valve and a pneumatic shut-off safety valve are arranged between the lead supply pipe and the lead pot of the plate casting machine, and the automatic lead supply valve is located at the front end of the pneumatic shut-off safety valve.

[0009] As a preferred embodiment of the above technical solution, it also includes: an isolation cover, which is installed on the outside of the heating component and has a plurality of observation ports on the surface of the isolation cover.

[0010] The beneficial effects of the utility model are:

[0011] 1. The heating temperature of the electromagnetic coil can be accurately controlled by an external temperature control cabinet. The temperature difference of each electromagnetic coil is very small, which can better ensure the consistency of the lead liquid temperature, make the alloy lead liquid have better viscosity, and reduce the lead slag rate in the lead liquid, thereby avoiding the blockage of the lead delivery system caused by poor lead supply and ensuring the production quality of the product;

[0012] 2. The two adjacent closed fixing plates can be connected and fixed by the fixing buckle, and the relative position of the electromagnetic coil is fixed by mechanical locking. The different materials of the closed fixing plates can realize the isolation or heat insulation function of the two adjacent electromagnetic coils, thereby preventing heat transfer between the two or reducing heat loss in the gap between the two, avoiding the temperature difference between the electromagnetic coils affecting the lead liquid transportation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 What is shown is a schematic diagram of the overall structure of the embodiment;

[0014] Figure 2 Shown is a schematic diagram of the installation of the electromagnetic coil in the embodiment;

[0015] Figure 3 Shown is a schematic diagram of the installation of the closed fixing sheet in the embodiment;

[0016] Figure 4 Shown is a top cross-sectional view of a closed fixing plate in an embodiment.

[0017] In the figure: 10, lead delivery pipe; 20, electromagnetic coil; 30, closed fixing plate; 31, fixing buckle; 40, coating layer; 50, automatic lead supply valve; 60, pneumatic shut-off safety valve; 70, isolation cover. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments and the drawings of the specification.

[0019] Example

[0020] Figure 1-Figure 2 In the invention, a centralized lead supply system for lead-acid batteries includes: a lead delivery pipe 10, wherein the lead delivery pipe 10 delivers lead liquid in direction A, wherein both ends of the lead delivery pipe 10 are respectively connected to the lead pot of a plate casting machine and a feeding assembly, and a heating assembly is arranged on the surface of the lead delivery pipe 10, wherein the heating assembly is composed of a plurality of electromagnetic coils 20, and the electromagnetic coils 20 are connected to an external temperature control cabinet through a line.

[0021] The heating temperature of the electromagnetic coil 20 can be precisely controlled by an external temperature control cabinet. The temperature difference of each electromagnetic coil 20 is extremely small, which can better ensure the consistency of the lead liquid temperature, make the alloy lead liquid have better viscosity, and reduce the lead slag rate in the lead liquid, thereby avoiding blockage of the lead delivery system due to poor lead supply and ensuring the production quality of the product.

[0022] Figure 3-Figure 4 In the embodiment, both ends of the electromagnetic coil 20 are provided with closed fixing plates 30 , and a plurality of fixing buckles 31 are circumferentially provided on the surface of the closed fixing plates 30 , and the fixing buckles 31 on two adjacent closed fixing plates 30 match each other.

[0023] The two adjacent closed fixing plates 30 can be clamped and fixed by the fixing buckle 31, and the relative position of the electromagnetic coil 20 is ensured to be fixed by mechanical locking. The different materials of the closed fixing plates 30 can achieve the isolation or heat insulation function of the two adjacent electromagnetic coils 20, thereby preventing heat transfer between the two or reducing heat loss in the gap between the two, avoiding the temperature difference between the electromagnetic coils 20 affecting the lead liquid transportation effect.

[0024] Figure 1-Figure 2 In the embodiment, a coating layer 40 is provided on the outer surface of the heating component, and the coating layer 40 is composed of an outer winding layer and an inner insulation layer.

[0025] Since the outer heating ring will generate high temperature, adding an insulation layer can reduce the temperature of the outer surface. At the same time, it can reduce the impact on the environment during the heating process, reduce energy consumption, and reduce greenhouse gas emissions.

[0026] Figure 1 In the figure, an automatic lead supply valve 50 and a pneumatic shut-off safety valve 60 are arranged between the lead delivery pipe 10 and the lead pot of the plate casting machine, and the automatic lead supply valve 50 is located at the front end of the pneumatic shut-off safety valve 60.

[0027] The automatic lead supply valve 50 can automatically supply lead to the lead pot of the plate casting machine, and the pneumatic shut-off safety valve 60 can heat and keep the lead liquid warm to prevent the heat of the lead liquid from escaping and failing to meet the use requirements.

[0028] Figure 1 The device further includes: an isolation cover 70, which is installed on the outside of the heating component, and a plurality of observation ports are opened on the surface of the isolation cover 70.

[0029] The isolation cover 70 can isolate the lead pipe 10 from the outside to prevent the workers from contacting the heating component, thereby ensuring the safety of the workers.

[0030] Working principle: The molten lead is transported through the centralized lead supply and lead delivery pipe 10, and the automatic insulation function of the external temperature control cabinet is used to ensure the stability of the heating temperature of the electromagnetic coil 20. The electromagnetic coil 20 heats the passing molten lead, and then the automatic lead supply valve 50 and the pneumatic shut-off safety valve 60 at the lead outlet of the molten lead delivery pipe 10 automatically supply lead to the inside of the lead pot of the casting machine while heating and preserving the molten lead.

[0031] 1. Comparison of alloy content and lead liquid viscosity:

[0032] The following table compares the Ca and Sn contents of the lead-calcium alloy in the heating tube centralized lead supply system and the electromagnetic heating centralized lead supply system:

[0033]

[0034] The heating tube centralized lead supply system is used for the lead supply of positive and negative lead-calcium alloys. It is found that the viscosity of the lead liquid increases and the number of times the lead slag is salvaged increases; and the positive grid becomes soft. Even after hardening, the grid strength is not enough and it is easy to deform when the plate is coated. Chemical analysis of the Ca and Sn elemental composition of the alloy found that the Ca content is lower than that of the original alloy, and the Sn content is very different (Table 1). The viscosity of the lead liquid in the lead spoon is relatively large. After the lead liquid drips to the gate of the grid mold and cools, it forms lead skin, causing more lead skin to be entrained in the grid; and after the lead liquid cools at the lead spoon teeth, it drips on the lead spoon.

[0035] 2. The proportion of lead slag:

[0036] During the use process in the past month, it was found that the lead liquid of the lead-calcium alloy supplied by the heating tube centralized lead supply system has a large viscosity, poor fluidity, and a large amount of lead slag. The following table 3 shows the weekly lead slag proportion of the lead-calcium alloy supplied by the heating tube centralized lead supply system in June, Table 4 shows the lead slag proportion of the alloy supplied by the electromagnetic heating centralized lead supply system in March, and Table 5 shows the lead slag situation from December 2022 to October 2023.

[0037] The following table shows the weekly lead slag percentage of alloys supplied by the centralized lead supply system for heating tubes in June:

[0038]

[0039] The following table shows the statistics of the lead slag proportion of alloys supplied by the electromagnetic heating centralized lead supply system in March:

[0040]

[0041] The following table shows the statistics of alloy lead slag supplied by the electromagnetic heating centralized lead supply system from December 2022 to October 2023:

[0042]

[0043] From the above, it can be seen that the proportion of lead slag in the centralized lead supply system heated by heating tubes is higher than that in the centralized lead supply system heated by electromagnetic heating. This can also explain why the use of heating tubes to heat the centralized lead supply system results in more lead liquid and lead slag, leading to an increase in the number of salvage times per shift.

[0044] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A centralized lead supply system for lead-acid batteries, comprising: A lead delivery pipe (10), the lead delivery pipe (10) delivers lead liquid in direction A, the two ends of the lead delivery pipe (10) are respectively connected to the lead pot of the plate casting machine and the feeding assembly, characterized in that a heating assembly is provided on the surface of the lead delivery pipe (10), the heating assembly is composed of a plurality of electromagnetic coils (20), and the electromagnetic coils (20) are connected to an external temperature control cabinet via a line; Both ends of the electromagnetic coil (20) are provided with closed fixing plates (30), a plurality of fixing buckles (31) are circumferentially provided on the surface of the closed fixing plates (30), and the fixing buckles (31) on two adjacent closed fixing plates (30) match each other; The outer surface of the heating component is provided with a coating layer (40), and the coating layer (40) is composed of an outer winding layer and an inner heat-insulating layer.

2. A centralized lead supply system for lead-acid batteries according to claim 1, characterized in that: An automatic lead supply valve (50) and a pneumatic shut-off safety valve (60) are provided between the lead delivery pipe (10) and the lead pot of the plate casting machine, and the automatic lead supply valve (50) is located at the front end of the pneumatic shut-off safety valve (60).

3. A centralized lead supply system for lead-acid batteries according to claim 1, characterized in that: Also includes: An isolation cover (70) is installed outside the heating component, and a plurality of observation ports are provided on the surface of the isolation cover (70).

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