CN211102001U

CN211102001U - PCB thermal decomposition device

Info

Publication number: CN211102001U
Application number: CN201921465049.9U
Authority: CN
Inventors: 李晓演
Original assignee: Shantou Changxing Electromechanical Equipment Co ltd
Current assignee: Shantou Changxing Electromechanical Equipment Co ltd
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2020-07-28
Anticipated expiration: 2029-09-05

Abstract

The utility model provides a PCB board pyrolysis device mainly has the frame, be equipped with in the frame by motor drive's rotary screen, be provided with the guard shield in the frame, the guard shield has feed inlet and discharge gate, and the rotary screen is arranged in the guard shield, still has a level setting and transversely runs through the heating rod of rotary screen, and the heating rod is cylindric and one end butt joint furnace end, and heating rod surface evenly distributed has a plurality of flame projecting holes, and the discharge gate is located the guard shield bottom, and the guard shield below has the shale shaker. The furnace end comprises an air pressure proportional valve, an igniter and an air inlet channel, and the air pressure proportional valve is connected with the liquefied gas tank. The air inlet end and the flame projecting end are respectively arranged at two ends of the air inlet channel, the air inlet end is provided with a fan, and the flame projecting end is provided with a turbulence cover. A temperature sensor is arranged in the protective cover and is linked with the air pressure proportional valve and the igniter. The utility model discloses improve traditional decomposition equipment, adopt discontinuous naked light to spray and carry out thermal decomposition to the circuit board, effectively improve decomposition efficiency, reduce the energy consumption.

Description

PCB thermal decomposition device

Technical Field

The utility model relates to a PCB board decomposition technique refers in particular to a PCB board thermal decomposition device.

Background

With the scrapping of the old generation of electronic products, a large amount of waste circuit boards are generated, which contain plastic, metal, rubber and other substances, and need to be recycled and decomposed in order to realize resource regeneration.

The traditional old and useless circuit board decomposition mode is that the manual work is disassembled, need melt the tin point on the circuit board one by one, extracts electronic components, in order to improve and disassemble efficiency, disassembles equipment voluntarily and produces. At present, what current automatic equipment of disassembling adopted is the electrical heating rod, makes the tin point on the circuit board melt, utilizes the rotary screen to make the circuit board roll and reach the effect of components and parts and circuit board separation, however, because the electrical heating rod programming rate is lower, will reach the automatic temperature that melts of circuit board tin point, the time that consumes is longer, leads to all will thermal-arrest a period after reinforced every time, just can make the automatic thermal decomposition of circuit board. Therefore, the low efficiency and high energy consumption of the equipment are the technical problems of the improvement of the current equipment.

Disclosure of Invention

An object of the utility model is to prior art current situation, provide a PCB board pyrolysis device, it adopts the naked light to carry out discontinuous flame spraying and smelts, can improve pyrolysis efficiency greatly, reduces the energy consumption.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a PCB board pyrolysis device, mainly has the frame, be equipped with in the frame by motor drive's rotary screen, be provided with the guard shield in the frame, the guard shield has feed inlet and discharge gate, and the rotary screen is arranged in the guard shield, still has a level setting and transversely runs through the heating rod of rotary screen, and the heating rod is cylindric and one end butt joint furnace end, and heating rod surface evenly distributed has a plurality of flame projecting holes, and the discharge gate is located the guard shield bottom, and the guard shield below has the shale shaker.

In the above scheme, the rotary screen is at least provided with one feeding port, and the feeding port is provided with a switch cover.

Furthermore, the feed inlet disposes flip, and flip both sides dispose the hydraulic support pole.

Further, the furnace end comprises an air pressure proportional valve, an igniter and an air inlet channel, and the air pressure proportional valve is connected with the fuel container.

Furthermore, the two ends of the air inlet channel are respectively provided with an air inlet end and a flame projecting end, the air inlet end is provided with a fan, and the flame projecting end is provided with a turbulent flow cover.

Furthermore, the turbulence cover comprises a central air port and a plurality of side air ports which are uniformly distributed by taking the central air port as a circle center, and the side air ports are uniformly distributed clockwise or anticlockwise.

Furthermore, a temperature sensor is arranged in the protective cover and linked with the air pressure proportional valve and the igniter.

Furthermore, the vibrating screen is obliquely arranged, and slag removing holes are distributed in the vibrating screen.

The utility model has the advantages that: the intermittent open fire jet smelting is adopted, so that the temperature inside the rotary screen is rapidly raised, the rotary screen is directly smelted after feeding, the temperature in the rotary screen can reach the melting temperature of the tin point within 20 minutes due to the tin point on the circuit board, the electronic components attached to the circuit board are smoothly separated from the circuit board through the centrifugal force generated by rotation, the decomposition efficiency of the circuit board is improved, and meanwhile, the electronic components and the soldering tin can be smoothly separated and recovered by using the vibrating screen. The liquefied gas intermittent open fire smelting is adopted, compared with an electric heating rod, the decomposition energy consumption is lower, the cost in the circuit board decomposition process is reduced, various circuit boards can be disassembled, and the application range is wide.

Description of the drawings:

FIG. 1 is a schematic view of the overall structure of the depression angle of the present invention;

FIG. 2 is a schematic view of the whole structure of the upward viewing angle of the present invention;

FIG. 3 is a schematic structural view of a burner head of the present invention;

fig. 4 is a schematic structural view of the middle spoiler cover of the present invention.

The specific implementation mode is as follows:

please refer to fig. 1 and 2, which are schematic structural diagrams of a preferred embodiment of the present invention, the present invention is a thermal decomposition device for PCB board, mainly comprising a frame 1, wherein the frame 1 is provided with a rotary screen 2 driven by a motor 21, specifically, the motor 21 drives the rotary screen 2 to rotate through a chain, the frame 1 is provided with a shield 3, and further comprises a heating rod 4 horizontally arranged and transversely penetrating the rotary screen 2, the heating rod 4 is cylindrical and has one end abutting against a furnace end 5, the surface of the heating rod 4 is uniformly distributed with a plurality of fire holes 511, the furnace end 5 sprays flame to the inside of the heating rod 4, the flame is emitted from the fire holes 511, so as to rapidly heat up the inside of the rotary screen 2, within 20 minutes, the open flame can reach 250-, the purpose of decomposition is achieved.

Above-mentioned 2 surfaces of rotary screen are latticed structure, and electronic components can drop and the circuit board separation from the net, decomposes the completion back, and the circuit board is whole to be located inside rotary screen 2, and electronic components includes that tin point, tin bar then separate away through rotary screen 2.

The rotary screen 2 is positioned in the protective cover 3, the electronic component and the tin block inside the rotary screen 2 can be prevented from being thrown out due to centrifugal force, the protective cover 3 is provided with a feed port 31 and a discharge port 32, the feed port 31 is provided with a turnover cover 7, two sides of the turnover cover 7 are provided with hydraulic support rods 71, the discharge port 32 is positioned at the bottom of the protective cover 3, the turnover cover 7 needs to be opened when feeding materials, the turnover cover needs to be closed after feeding materials, the separated electronic component and the tin block fall from the rotary screen 2 through the discharge port 32, and the vibrating screen 6 is arranged below the protective cover 3 and used for receiving and transferring the separated.

The rotary screen 2 is at least provided with a feeding port 20, the feeding port 20 is provided with a switch cover, the rotary screen 2 is positioned inside the protective cover 3 and is not suitable for the turnover cover, the switch cover arranged on the feeding port 20 of the rotary screen 2 can be of a plug-in type, when the materials are fed, the rotary screen 2 is rotated until the feeding port 20 is aligned with the feeding port 31 of the protective cover 3, the switch cover of the rotary screen is opened, after the waste circuit boards are fed, the switch cover is assembled, the turnover cover is improved, and the equipment is restarted to decompose the circuit boards.

As shown in fig. 3, the burner 5 comprises a gas pressure proportional valve 51, an igniter 52 and an air inlet channel 53, wherein the gas pressure proportional valve 51 is connected with a fuel container, and fuel in the fuel container can comprise liquefied gas, gasoline, kerosene, alcohol and the like.

In order to make the flame spray have enough length and spread to the periphery, the two ends of the air inlet channel 53 are respectively an air inlet end and a flame spray end, the air inlet end is provided with a fan 54, and the flame spray end is provided with a spoiler cover 55. As shown in fig. 4, the turbulent flow cover 55 includes a central air opening 551 and a plurality of side air openings 552 uniformly distributed around the central air opening 551, and each side air opening 552 is uniformly arranged clockwise or counterclockwise, air and fuel are pushed out toward the turbulent flow cover 55 by the fan 54, after the igniter 52 is ignited, flame is directly sprayed into the heating rod 4, and the flame is diffused all around under the action of the side air openings 552 and is ejected from the fire spraying holes 511 of the heating rod 4.

In order to determine whether the temperature of the rotary screen 2 reaches the preset temperature, a temperature sensor is arranged in the shield 3, the temperature sensor is linked with the air pressure proportional valve 51 and the igniter 52, the temperature detected by the temperature sensor and the actual temperature can be set to a compensation value through a system, so as to determine whether the preset temperature is reached, the temperature is rapidly increased to the preset temperature range, the disassembly work is smoothly and normally carried out, the energy saving effect is also achieved, and meanwhile, the electronic components can be prevented from being damaged by overhigh temperature. A detected temperature is set to 250 c by the temperature sensor, for example, 220 c is detected in the shield 3, and a compensation value of 35 c is added, so that 255 c is reached, the air pressure proportional valve 51 is closed, the flame is not ejected temporarily, and when the temperature detected by the temperature sensor is lowered to 230 c, the air pressure proportional valve 51 is opened again, and the igniter 52 is fired to eject the flame again. Thereby forming intermittent combustion.

In order to facilitate the collection of the electronic components and the tin blocks which fall, the vibrating screen 6 is obliquely arranged, the slag removing holes 61 are distributed on the vibrating screen 6, the tin blocks or tin points fall on the collecting tray below the vibrating screen 6 through the slag removing holes 61 under the action of the vibrating screen, and the electronic components with large volume slide downwards along the oblique direction of the vibrating screen 6 to be collected at the tail end of the vibrating screen 6.

Of course, the above illustration is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, so all equivalent changes made in the principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a PCB board pyrolysis device, mainly has frame (1), be equipped with in frame (1) and be equipped with rotary screen (2) by motor (21) driven, its characterized in that: be provided with guard shield (3) on frame (1), guard shield (3) have feed inlet (31) and discharge gate (32), change sieve (2) and be located guard shield (3), still have heating rod (4) that a level set up and transversely run through change sieve (2), heating rod (4) are cylindric and one end butt joint furnace end (5), heating rod (4) surface evenly distributed has a plurality of flame projecting holes (511), discharge gate (32) are located guard shield (3) bottom, and guard shield (3) below has shale shaker (6).

2. The thermal decomposition device for PCB of claim 1, wherein: the rotary screen (2) is at least provided with a feeding port (20), and the feeding port (20) is provided with a switch cover.

3. The thermal decomposition device for PCB of claim 1, wherein: the feed inlet (31) is provided with a flip cover (7), and two sides of the flip cover (7) are provided with hydraulic support rods (71).

4. A PCB board thermal decomposition device according to claim 1, 2 or 3, wherein: the burner (5) comprises an air pressure proportional valve (51), an igniter (52) and an air inlet channel (53), wherein the air pressure proportional valve (51) is connected with a fuel container.

5. The PCB thermal decomposition device of claim 4, wherein: the two ends of the air inlet channel (53) are respectively provided with an air inlet end and a flame projecting end, the air inlet end is provided with a fan (54), and the flame projecting end is provided with a turbulent flow cover (55).

6. The PCB thermal decomposition device of claim 5, wherein: the turbulence cover (55) comprises a central air opening (551) and a plurality of side air openings (552) which are uniformly distributed by taking the central air opening (551) as a circle center, and the side air openings (552) are uniformly distributed clockwise or anticlockwise.

7. The PCB thermal decomposition device of claim 4, wherein: and a temperature sensor is arranged in the shield (3), and the temperature sensor is linked with the air pressure proportional valve (51) and the igniter (52).

8. A PCB board thermal decomposition device according to claim 1, 2 or 3, wherein: the vibrating screen (6) is obliquely arranged, and slag removing holes (61) are distributed on the vibrating screen (6).