CN214489151U - Detinning device - Google Patents

Abstract

The utility model relates to a circuit board recovery unit, especially a detinning device, it includes the tin stove body, this internal tin melting cavity that sets up of tin stove, the conveyer that is used for material transfer is installed to the tin melting cavity, hot oil pipe is installed to the conveyer belt below of conveyer, the electrothermal tube is installed to the conveyer belt top. And a boiler for heating oil bodies is arranged on one side of the tin furnace body, the boiler is provided with an oil inlet and an oil outlet, and the oil outlet is connected with the hot oil pipe. The utility model discloses melt tin intracavity air heat-up time short, the temperature is even, and unit area handling capacity is big, and detinning speed is fast, and is efficient.

Description

Detinning device

Technical Field

The utility model relates to a circuit board recovery unit, especially a detinning device.

Background

The resource utilization of electronic wastes belongs to a new industry in the world, and waste electric products in China enter a peak period of elimination. A large number of circuit boards are disassembled from various electrical appliances, and the circuit boards contain more heavy metals of copper, tin, light metal of aluminum, noble metals of gold, silver, platinum, palladium and the like, so that the comprehensive recovery value is considerable. In order to comprehensively recover precious metals such as copper, tin, aluminum, gold, silver and the like on the circuit board, the effective separation of electronic components and circuit boards on the waste circuit boards and the pretreatment detinning treatment are indispensable and are also a key step.

At present, hot air fusion welding and the like are used as methods for detinning treatment of waste circuit boards. The hot air fusion welding is to use a hot air gun to generate hot air and use the hot air to tin the circuit board, and the tin removing speed of the mode is high, but the heating area is small, the tin removing efficiency is low, and the automatic production is difficult to realize.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the heated area to current hot-air fusion welding is little, efficient, and the automated production's that is not suitable is not enough, provides one kind and can effectively improve daily throughput and increase substantially the detinning device of detinning rate.

In order to solve the technical problem, the utility model provides a detin device, it includes the tin stove body, this internal tin chamber that melts that sets up of tin stove, melt the conveyer that the installation of tin intracavity was used for material transfer, hot oil pipe is installed to the conveyer belt below of conveyer, the electrothermal tube is installed to the conveyer belt top.

The utility model discloses an installation hot oil pipe in the conveyer belt below of conveyer, conveyer belt top installation electrothermal tube adopt to melt tin intracavity air mass transfer to utilize hot oil pipe and electrothermal tube indirect heating air, it is even to ensure to melt tin intracavity air temperature everywhere, makes simultaneously to melt tin intracavity air temperature reach in the short time and predetermine the detinning temperature, thereby effectively improves the day handling capacity of detinning processing, and increases substantially the detinning rate.

Preferably, a boiler for heating the oil body is installed on one side of the tin furnace body, the boiler is provided with an oil inlet and an oil outlet, and the oil outlet is connected with the hot oil pipe so as to heat the oil body through the boiler for detinning.

Preferably, the conveyor belt is an endless conveyor belt, and the hot oil pipe is installed in the middle of the conveyor belt to facilitate heating of air below the conveyor belt.

Preferably, the conveying belt comprises a plurality of chain plates and a plurality of chain links, and adjacent chain plates are connected through the chain links so as to facilitate the conveying of tin-containing materials in the tin melting cavity and uniformly heat air in the tin melting cavity.

Preferably, the electric heating tube is a carbon molybdenum rod with a high heating rate, and a steel tube for protecting the electric heating tube is sleeved outside the electric heating tube and is arranged at a position 5cm below a cover plate of the tin melting cavity. When the device is used, the carbon molybdenum rod is electrified to generate heat, and then the air above the tin melting cavity is indirectly heated by the steel pipe, so that the temperature deviation of the air in the tin melting cavity is small.

Preferably, the hot oil pipe is arranged in a curve below the conveyor belt, so that materials on the conveyor belt can be uniformly heated, and air in the tin melting cavity can be uniformly heated as far as possible.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model is suitable for a to old and useless circuit board, contain the soldering tin material detinning operation.

2. The utility model discloses melt tin intracavity air heat-up time short, the unit area handling capacity is big, and detinning speed is fast, and detinning is efficient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a perspective schematic view of the tin furnace body of the present invention.

FIG. 2 is a schematic view of the overlooking structure of the conveyor belt in the tin furnace body of the present invention.

FIG. 3 is a schematic view of the top view of the distribution of the electric heating tube and the hot oil tube in the tin furnace body of the present invention.

Fig. 4 is a schematic structural view of the boiler of the present invention.

Detailed Description

The invention is further described below with reference to specific preferred embodiments, without thereby limiting the scope of protection of the invention.

For convenience of description, the relative positional relationship of the components, such as: the descriptions of the upper, lower, left, right, etc. are described with reference to the layout directions of the drawings in the specification, and do not limit the structure of the present patent.

As shown in fig. 1-4, an embodiment of the tin removing device of the present invention includes a tin furnace body 1 fixed on a frame, a tin melting chamber 11 is arranged in the tin furnace body, a conveyor 2 for conveying materials is installed in the tin melting chamber 11, a hot oil pipe 3 for conveying hot oil is installed below a conveyor belt 21 of the conveyor 2, and an electric heating pipe 4 is installed above the conveyor belt 21. Melt in the tin chamber 11 still and be equipped with tin dross collecting vat and collecting vat spacing strip through supporting platform, the bottom of melting tin chamber 11 is provided with the tin dross export, the direction of transfer afterbody of conveyer belt 21 is equipped with the discharge gate.

The tin furnace comprises a tin furnace body 1, and is characterized in that a boiler 5 for heating oil bodies is installed on one side of the tin furnace body 1, a burner 51 taking natural gas as fuel is arranged in the boiler 5, the boiler 5 is provided with an oil inlet 52 and an oil outlet 53, the oil outlet 53 is connected with a hot oil pipe 3, and the oil temperature entering the hot oil pipe 3 reaches a preset detinning temperature by utilizing the heat released by the combustion of the natural gas. The rated outlet temperature of the boiler 5 is 300 ℃, the inlet temperature is 28 ℃, and the rated working pressure is 0.8 MPa.

The conveyor belt 21 comprises a plurality of chain plates 211 and a plurality of chain links 212, adjacent chain plates 211 are connected through the chain links 212, the conveyor belt 21 is preferably an endless conveyor belt, and the hot oil pipe 3 is installed in the middle of the endless conveyor belt.

The electric heating tube 4 is preferably a carbon molybdenum rod. In order to protect the electric heating tube 4 and quickly transfer the heat of the electric heating tube 4 to the air, a steel tube 6 is sleeved outside the electric heating tube 4. The steel tube 6 is preferably a stainless steel tube made of 316L, the electric heating tubes 4 and the steel tubes 6 are arranged in parallel, and the interval between adjacent electric heating tubes 4 and steel tubes 6 is 10 cm.

In order to heat the air above the tin melting cavity 11 and ensure that the temperature deviation of the air in the tin melting cavity 11 is small, the electric heating tube 4 is arranged at the position 5cm below the cover plate of the tin melting cavity 11.

In order to uniformly heat the materials on the conveyor belt 21 and uniformly heat the air in the tin melting cavity 11 as much as possible, the hot oil pipes 3 are arranged in a U-shaped curve below the conveyor belt 21.

In order to prove that the utility model really realizes the uniform heating of the air in the tin melting furnace 11 and improves the detinning efficiency, the applicant has made the following experiments:

experiment 1, set for natural gas flow, melt tin intracavity detinning temperature, close electrothermal tube heating system, only utilize boiler burning natural gas heating heat oil pipe, recycle heat oil pipe and pass through the indirect heating of air mass transfer and melt tin intracavity air, make and melt tin intracavity temperature and reach preset temperature. The whole temperature rising process adopts a step type, the time consumption is 2 hours, and the deviation between the middle temperature and the temperature of the upper part of the tin melting cavity is large.

Experiment 2, the electric heating tube heating current and the tin melting intracavity detinning temperature are set, the boiler is closed, and only the electric heating tube is used for indirectly heating the air in the tin melting intracavity through air mass transfer, so that the temperature reaches the preset temperature. The whole temperature rising process adopts a step type, the time is consumed for 3 hours, but the upper part of the tin melting cavity has higher temperature.

Experiment 3, set for natural gas flow, electrothermal tube heating current, molten tin intracavity detinning temperature, utilize boiler burning natural gas heating oil pipe, utilize the electrothermal tube simultaneously, both indirectly heat molten tin intracavity air through air mass transfer, make molten tin intracavity temperature reach preset the temperature. The whole temperature rising process adopts a step type, the time is consumed for 1.5h, but the temperature of the middle part of the tin melting cavity is almost not different from the temperature of the upper part of the tin melting cavity.

Experiment 4, take 1 ton dismantle useless television circuit board behind appointed components and parts as an example, set for the transfer rate of conveyer, natural gas flow, tin melting intracavity detinning temperature, close the electrothermal tube heating, only utilize boiler burning natural gas heating heat oil pipe, recycle heat oil pipe and pass through the indirect heating of air mass transfer tin melting intracavity air, reach preset detinning temperature in the tin melting intracavity, begin slowly to throw the material to the tin melting intracavity, wait the discharge gate no longer ejection of compact, whole detinning process consumes 1.25 hours, but there are few parts of components and parts base angle soldering tin on useless circuit board surface and do not melt.

Experiment 5, take 1 ton to dismantle the useless TV machine circuit board after appointed components and parts as an example, set up the transfer rate of conveyer, natural gas flow, electrothermal tube heating current, detin temperature in the molten tin intracavity, close boiler heating sky hot-air system, only utilize the electrothermal tube to pass through the indirect heating intracavity air of air mass transfer, reach and predetermine detin temperature, begin to throw the material to the tin stove intracavity slowly with the same rate, wait the discharge gate no longer ejection of compact, whole detin process consumes 1.25 hours, because the upper portion temperature in the intracavity is higher, low melting point plastics are more obvious on part useless circuit board, for follow-up recovery degree of difficulty improves greatly, there is partial blocking phenomenon in the link joint hole simultaneously.

Experiment 6, take 1 ton to dismantle the useless TV machine circuit board after appointed components and parts as an example, set up the transfer rate of conveyer, natural gas flow, the electrothermal tube heating current, detin temperature in the molten tin cavity, utilize boiler burning natural gas heating heat oil pipe, open the electrothermal tube heating simultaneously, heat oil pipe and electrothermal tube all through the indirect heating intracavity air of air mass transfer, when the temperature reaches preset temperature in the molten tin cavity, begin to throw the material to the molten tin stove slowly with the same rate, wait the discharge gate no longer ejection of compact, whole detin process consumes 1.25 hours, because the difference in temperature is less with upper portion in the molten tin cavity, low melting point plastics are not obvious on the useless circuit board, and most components and parts base angle soldering tin melts, the link joint hole does not have the jam phenomenon simultaneously.

In addition, even if the conveying speed of the conveyor is increased, the detinning effect and the tin yield are not influenced while the processing capacity is increased.

The above description is only for the preferred embodiment of the present application and should not be taken as limiting the present application in any way, and although the present application has been disclosed in the preferred embodiment, it is not intended to limit the present application, and those skilled in the art should understand that they can make various changes and modifications within the technical scope of the present application without departing from the scope of the present application, and therefore all the changes and modifications can be made within the technical scope of the present application.

Claims (7)

1. The utility model provides a detinning device, includes the tin stove body, its characterized in that, this internal tin melting chamber that sets up of tin stove, the conveyer that is used for material transfer is installed to the tin melting intracavity, hot oil pipe is installed to the conveyer belt below of conveyer, the conveyer belt top installation electrothermal tube.

2. The detinning apparatus of claim 1, wherein a boiler for heating oil is installed at one side of the tin furnace body, the boiler has an oil inlet and an oil outlet, and the oil outlet is connected to the hot oil pipe.

3. The detinning apparatus of claim 1, wherein the conveyor belt is an endless conveyor belt, and the hot oil pipe is installed in the middle of the conveyor belt.

4. The detinning apparatus of any of claims 1-3, wherein the conveyor belt comprises a plurality of link plates and a plurality of chain links, adjacent link plates being connected by chain links.

5. The detinning apparatus of any one of claims 1-3, wherein the electrical heating tube is a carbon molybdenum rod, and a steel tube is sleeved outside the electrical heating tube.

6. The detinning apparatus of any one of claims 1-3, wherein the electrical heating tube is installed 5cm below a cover plate of the tin melting chamber.

7. The detinning apparatus of any one of claims 1-3, wherein the hot oil pipe is arranged in a U-shaped curve below the conveyor belt.

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