Lead net punching excess material recycling device

Abstract

A lead net punching excess material recycling device comprises an excess material hot melting tank, a nitrogen purging device, a feeding baffle, a plurality of heaters and a lead conveying pipe, a feeding port is formed in the upper end of the excess material hot melting tank, and a discharging port is formed in the lower end of the excess material hot melting tank; the nitrogen purging device comprises a gas supply pipeline and a plurality of purging nozzles; the plurality of purging nozzles are annularly distributed on the periphery of a feeding hole in the upper end of the excess material hot melting tank; the upper end of the feeding baffle is vertically connected with the top end of the excess material hot melting tank, and the lower end of the feeding baffle is bent towards one side of the feeding port to form an inclined shape; the heaters are evenly distributed on the lower middle portion of the excess material hot melting tank side by side and extend horizontally, and the length of a heating pipe of each heater exceeds 2 / 3 of the diameter of the excess material hot melting tank. One end of the lead conveying pipe is communicated with a discharge hole in the bottom of the excess material hot melting tank through a lead conveying pump, the other end of the lead conveying pipe is introduced into a lead pan for rolling a lead net, and the introduction part is lower than the upper surface of lead liquid in the lead pan. And lead slag can be completely prevented from being generated in the excess material recycling process, and the recycling rate is increased.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the production and manufacturing technical field of lead -acid battery, concretely relates to a lead net punching excess material recycling device. BACKGROUND

[0002] Lead -acid battery is mainly composed of grid, active material, electrolyte, separator, plastic shell, terminal etc. The lead net of making lead -acid battery positive / negative grid is made by lead strip punching. After lead strip rolling, lead net is formed by punching, and a lot of excess material is produced after lead net punching, and the current lead net excess material is sent back to lead pot again by conveying belt and then melted. The existing excess material recycling method has the following problems:

[0003] 1, the single quality of lead net excess material is lighter, the surface of lead liquid in lead melting pot exists covering agent and oxide layer, and the lead net excess material is easy to accumulate on the surface of covering agent and oxide layer, cannot contact lead liquid and then melt and reprocess lead strip.

[0004] 2, the punching net excess material accounts for 70% of the weight of lead strip, and when entering the lead melting pot for melting, the heat absorption will cause the temperature of lead liquid to fluctuate greatly, lead slag is formed and the quality of lead liquid is reduced.

[0005] In order to solve the problem, the factory currently adopts the method of increasing the surface stirring of lead liquid or manual intervention, but the actual effect is not ideal. Increasing the surface stirring of lead liquid can effectively solve the problem of punching net excess material blocking, but greatly increases the probability of lead liquid contacting with air, increases the production of lead oxide, and also increases the production of lead slag. Manual intervention is time-consuming and laborious and the effect is not ideal.

[0006] The existing disclosed excess material recycling device adopts excess material temporary storage room, and when the excess material accumulates to a certain amount, the grid excess material can be concentrated into the excess material hot melting chamber through the cylinder, concentrated treatment and hot melting, and then added to the lead pot, which can solve the problem of large temperature fluctuation in the lead pot, but the excess material hot melting chamber still has the problem that the excess material contacts with air during heating process, which will produce lead oxide on the surface, affecting the recycling utilization rate of the excess material. At the same time, the lead strip punching process is a continuous production process, and the excess material accounts for 70% of the weight of lead strip, so nearly one hundred tons of excess material can be produced every day (every line), and the existing device is not suitable for large-scale continuous production. SUMMARY

[0007] The utility model aims at solving the deficiency of the prior art, and provides a lead net punching excess material recycling device, which can completely avoid the production of lead slag in the recycling process of excess material and improve the recycling rate.

[0008] A lead net punching excess material recycling device comprises:

[0009] An excess material hot melting tank is provided with a feeding port at the upper end and a discharging port at the lower end.

[0010] The nitrogen blowing device comprises a gas supply pipeline and a plurality of blowing nozzles, and the plurality of blowing nozzles are arranged on the periphery of the upper end of the excess material hot melting tank.

[0011] The upper end of the feeding baffle is vertically connected with the top end of the excess material hot melting tank, and the lower end of the feeding baffle is bent to be inclined to one side of the feeding port.

[0012] A plurality of heaters are arranged in the lower part of the excess material hot melting tank, the heaters extend horizontally, and the length of the heating pipe of the heater exceeds 2 / 3 of the diameter of the excess material hot melting tank.

[0013] The lead conveying pipe is communicated with the bottom discharge port of the excess material hot melting tank through the lead conveying pump at one end, and is communicated into the lead pot for lead mesh rolling at the other end, and the communicated position is lower than the upper surface of the lead liquid in the lead pot.

[0014] The height H between the lower end of the feeding baffle and the bottom of the excess material hot melting tank does not exceed 2 / 3 of the height of the excess material hot melting tank, and the distance L from the lower end of the feeding baffle to the right side wall is not greater than the radius of the excess material hot melting tank.

[0015] One end of the gas supply pipeline is communicated with the plurality of blowing nozzles, and the other end of the gas supply pipeline is communicated with the high-pressure nitrogen gas source.

[0016] The gas supply pipeline comprises horizontal pipe sections, annular pipe sections and a plurality of vertical pipe sections, the plurality of vertical pipe sections are uniformly arranged on the annular pipe sections, and the plurality of vertical pipes are connected with the plurality of blowing nozzles one by one.

[0017] The outer end of the lead conveying pipe is covered with a heat preservation layer.

[0018] The heater is a variable frequency heater.

[0019] The controller and the control panel are further included, the control panel is connected with the controller, and the controller can adjust the power of the heater according to the meshing speed input by the control panel.

[0020] Compared with the prior art, the advantages of the utility model lie in that:

[0021] 1. The nitrogen blowing device is arranged inside, when the equipment is running, the nitrogen is opened to drive away the oxygen inside the device, so that the lead slag formed by the contact between the lead residue and the oxygen during the melting process is avoided, and the reuse rate of the lead residue can be effectively improved.

[0022] 2. The material blocking plate can effectively slow down the nitrogen outflow speed; meanwhile, the entering speed of the excess material can be slowed down to prevent the lead liquid from splashing due to the too fast entering speed of the excess material into the device.

[0023] 3. The lead mesh punching waste recycling device matches the heater power according to the waste generation rate to ensure a constant temperature during the waste melting process, avoid the lead slag (PbCa3) generated due to changes in the temperature of the lead liquid, and ensure the stability of the alloy composition of the waste.

[0024] 4. The lead mesh punching waste recycling device directly uses a lead pump to transport molten lead to the lead melting pot. This process is in a fully enclosed state, minimizing contact with air and reducing the generation of lead slag in the lead melting pot.

[0025] 5. Suitable for large-scale continuous production. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0027] like Figure 1 As shown, the recycling device of this utility model includes a waste material hot melt tank, a nitrogen purging device, a heater 3 and a lead conveying pipe 8. The waste material hot melt tank is cylindrical, with an inlet 1 at the upper end and an outlet at the lower end. One end of the lead conveying pipe 8 is connected to the outlet at the bottom of the waste material hot melt tank via a lead conveying pump 7, and the other end extends into the lead pot used for lead mesh rolling. The outer end of the lead conveying pipe 8 is covered with an insulation layer. The remaining material after the lead strip is filled into the wire mesh is conveyed by a belt conveyor to the inlet 1 of the remaining material hot melt tank, where it falls freely. Three heaters 4 are arranged side-by-side in the lower part of the remaining material hot melt tank, extending horizontally with heating pipes exceeding 2 / 3 of the tank's diameter. The remaining material, after being heated by the heaters at the bottom of the tank, melts into a liquid state and is then transported by a lead pump 7 and a lead pipe 8 to the lead pot used for lead mesh rolling. The connection point of the lead pipe 8 to the lead pot is below the surface of the molten lead to avoid damaging the covering agent and oxide layer on top of the molten lead. A nitrogen purging device is used to... When hot-melting waste materials in the waste material hot-melt tank, to prevent the formation of lead slag due to the metal oxide of Pb after contact between the liquid surface on the waste material hot-melt tank and air, the waste material recycling rate can be effectively improved. The nitrogen purging device includes a gas supply pipe and several purging nozzles 2. The several purging nozzles 2 are arranged in a ring around the outer periphery of the upper feed port 1 of the waste material hot-melt tank. One end of the gas supply pipe is connected to the several purging nozzles 2, and the other end of the gas supply pipe is connected to a high-pressure nitrogen gas source. The gas supply pipe includes interconnected horizontal pipe sections, annular pipe sections and several vertical pipe sections. The several vertical pipe sections are evenly arranged in a ring around the annular pipe sections, and the several vertical pipes are connected one-to-one with the several purging nozzles 2.

[0028] The upper part of the waste material melting tank is equipped with a feed baffle 3. The upper end of the feed baffle 3 is vertically connected to the top of the waste material melting tank, and the lower end of the feed baffle 3 is bent at an angle towards the feed inlet 1. The angled design can effectively slow down the nitrogen flow rate and buffer the waste material entry speed to prevent the waste material from splashing the lead liquid due to excessive speed after entering the device. The height H between the lower end of the feed baffle 3 and the bottom of the waste material melting tank does not exceed 2 / 3 of the height of the waste material melting tank, and the distance L between the lower end of the feed baffle 3 and the right side wall does not exceed the radius of the waste material melting tank.

[0029] In another embodiment, the heater is a variable frequency heater, and it also includes a controller that can adjust the heater power according to the screen washing speed and a control panel connected to the controller. After the screen washing speed is set on the control panel, the controller adjusts the heater power according to the corresponding speed. The controller adjusting the heater power according to the set speed is prior art, and this embodiment will not elaborate further.

Claims

1. A device for recycling waste material from lead wire mesh punching, characterized in that: include: The waste material hot melt tank is provided with a feed inlet (1) at the upper end and a discharge outlet at the lower end; A nitrogen purging device, the nitrogen purging device includes a gas supply pipe and a number of purging nozzles (2), the number of purging nozzles (2) are arranged around the outer periphery of the upper feed inlet (1) of the residual material hot melt tank; Feed baffle (3), the upper end of the feed baffle (3) is vertically connected to the top of the residual material hot melt tank, and the lower end of the feed baffle (3) is bent into an inclined shape towards the feed inlet (1); Multiple heaters are arranged side-by-side in the lower part of the waste material hot melt tank, the heaters extend horizontally, and the length of the heating tube of the heater exceeds 2 / 3 of the diameter of the waste material hot melt tank; And lead conveying pipe (8), one end of which is connected to the bottom outlet of the residual material hot melting tank via lead conveying pump (7), and the other end is connected to the lead pot used for lead mesh rolling, and the part connected is lower than the upper surface of the lead liquid in the lead pot.

2. The lead wire mesh punching waste recycling device according to claim 1, characterized in that: The height H between the lower end of the feed baffle (3) and the bottom of the residual material hot melt tank shall not exceed 2 / 3 of the height of the residual material hot melt tank, and the distance L between the lower end of the feed baffle (3) and the right side wall shall not be greater than the radius of the residual material hot melt tank.

3. The lead mesh punching waste recycling device according to claim 1, characterized in that: One end of the gas supply pipeline is connected to several purging nozzles (2), and the other end of the gas supply pipeline is connected to a high-pressure nitrogen gas source.

4. A lead wire mesh punching waste recycling device according to claim 1 or 3, characterized in that: The gas supply pipeline includes interconnected horizontal pipe sections, annular pipe sections and several vertical pipe sections. Several vertical pipe sections are evenly distributed around the annular pipe sections, and several vertical pipes are connected one-to-one with several purging nozzles (2).

5. A lead mesh punching waste recycling device according to claim 1, characterized in that: The outer end of the lead pipe (8) is covered with an insulation layer.

6. A lead wire mesh punching waste recycling device according to claim 1, characterized in that: The heater is a variable frequency heater.

7. A lead mesh punching waste recycling device according to claim 6, characterized in that: It also includes a controller and a control panel. The control panel is connected to the controller, and the controller can adjust the heater power according to the grid speed input on the control panel.

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