CN118558400A - Metal recovery treatment process for waste circuit board - Google Patents

Abstract

The invention discloses a waste circuit board metal recovery treatment process, which relates to the technical field of circuit board recovery and comprises a breaker main body, wherein a reciprocating spraying mechanism is arranged at the upper part of the breaker main body, a lifting feeding mechanism is arranged on the side surface of the reciprocating spraying mechanism, a reciprocating moving plate and a pushing block fixedly connected to the reciprocating moving plate are driven to reciprocate through the rotation of a rotating gear, the quality of a product can be improved, convenience is provided for the next process, a reciprocating moving frame is driven to reciprocate through the reciprocating movement of the reciprocating moving plate, a piston rod is extruded, water in a piston cylinder is sprayed out in the form of water mist through a spray head, the breaking part is cooled, internal materials can be poured into two groups of breaking mechanisms again through the cooperation of a bevel block structure at one end of the reciprocating moving frame and a rotating rod for secondary breaking, the working efficiency of the machine is improved, and meanwhile, the labor cost of enterprises can be reduced.

Description

A metal recycling process for waste circuit boards

Technical Field

The invention relates to the technical field of circuit board recycling, and in particular to a metal recycling process for waste circuit boards.

Background Art

The metal recycling and processing device for waste circuit boards is a device specially used to process waste circuit boards. Through this device, the metal parts in the waste circuit boards can be recycled and processed to reduce resource waste and environmental pollution. This device usually includes a waste circuit board crusher, metal separation equipment, metal recycling equipment, etc., which can effectively separate and extract the metal parts in the waste circuit boards, and then recycle them.

The existing waste circuit board metal plates will be pre-processed before crushing, that is, the waste metal plates will be cleaned, and then directly placed in the crusher to be crushed by a high-speed rotating hammer, and then the waste metal plate fragments will be transported to the pulverizer through a conveyor belt, and the circuit boards will be ground into small particles, and then the valuable substances in the waste electronic products will be separated through chemical and physical methods.

The shortcomings of the above-mentioned prior art solutions are: although the above-mentioned solutions can crush scrap metal plates, the scrap metal plate fragments after crushing will be incompletely crushed. Scrap metal plate fragments of different sizes and shapes are directly put into the crusher without screening. Large scrap metal plate fragments will increase the crushing time and affect the crushing quality; at the same time, the machine will generate dust during the crushing process, and the dust floating in the air will affect the working environment. Secondly, when the machine is running continuously, heat will be generated due to friction, and the continuous heat will shorten the service life of the machine, further increasing the company's maintenance costs for the equipment.

In view of this, the present invention proposes a metal recycling process for waste circuit boards to make up for and improve the deficiencies of the prior art.

Summary of the invention

In order to solve the above technical problems, the present invention provides a waste circuit board metal recycling and processing equipment which can cool the crushing wheel; can perform secondary feeding of incompletely crushed waste metal plates; and can improve the quality of materials, so as to solve the corresponding technical problems raised in the above background technology.

In order to achieve the above purpose, the technical solution adopted by the present invention is: a metal recycling process for waste circuit boards described in the present invention comprises the following steps:

Step 1: Pretreatment: rinse and clean the scrap metal plates to remove surface dirt;

Step 2: crushing, manually pouring the pre-treated waste circuit boards into the middle of two groups of crushing parts of the crushing equipment, then turning on the first driving source to make the crushing equipment crush, and obtaining small pieces of waste circuit board fragments;

Step 3: Crushing, conveying the small pieces of waste circuit board fragments to the crusher, crushing the small pieces of waste circuit board fragments into small particles;

Step 4: Metal separation: Use airflow sorting and vibration separation processes to separate valuable substances from small particles of waste circuit boards.

Preferably, the crushing in step 2 is specifically as follows: first, the pre-treated waste circuit boards are manually poured into the middle of the two groups of crushing parts of the crushing equipment, and the first driving source is turned on at this time to enable the equipment to crush. Secondly, the second driving source is started, and the waste circuit boards dropped by the two groups of crushing parts will be on the filter plate, and the reciprocating frame will move toward the direction of the first driving source, further squeezing the piston rod, and then the water inside the piston cylinder is sprayed out in the form of mist through the nozzle, thereby achieving the purpose of dust reduction. At the same time, by continuously rotating the rotating gear, the reciprocating plate and the reciprocating frame will move away from the first driving source, and the material on the filter plate will be scraped into the collection box through the discharge port. At the same time, the oblique structure of the reciprocating frame at one end away from the first driving source will squeeze the oblique downward pressure rod, further pushing the collection box to move along the oblique slide groove, thereby achieving the purpose of secondary feeding.

Preferably, the crushing equipment comprises a crusher main body, a reciprocating spray mechanism is arranged on the upper part of the crusher main body, and a lifting and feeding mechanism is arranged on the side of the reciprocating spray mechanism.

Preferably, the crusher body includes a supporting base, which is arranged above the ground, a first driving source is fixedly connected to the top of the supporting base, a rotating shaft is fixedly connected to the output shaft of the first driving source, a crushing component is fixedly connected to the outer surface of the rotating shaft away from the first driving source, a protective shell is arranged on the outer surface of the middle part of the rotating shaft, the rotating shaft passes through and is rotatably connected to the side of the protective shell, and an inner cavity is opened in the middle part of the protective shell.

Preferably, the reciprocating spray mechanism includes an oblique blocking plate, which is fixedly connected to the side wall of the protective shell, the second driving source is fixedly connected to the bottom of the second driving source, the output shaft of the second driving source is fixedly connected to a rotating gear, a reciprocating plate is meshed with teeth on the outer edge of the rotating gear, a reciprocating frame is provided on the outer surface of the reciprocating plate, the reciprocating plate is slidably connected to the middle part of the reciprocating frame, and a pushing block is fixedly connected to the bottom of the reciprocating plate.

Preferably, the reciprocating spray mechanism further comprises a piston cylinder, the piston cylinder is fixedly connected to the side wall of the protective shell, an inner cavity is defined inside the piston cylinder, and a piston sheet is slidably connected to the inner wall of the piston cylinder.

Preferably, a piston rod is fixedly connected to the middle of the piston plate, a return spring is sleeved on the outer ring surface of the piston rod, and two ends of the return spring are respectively fixedly connected to one side of the piston plate and the side wall of the piston cylinder.

Preferably, the end of the piston rod away from the return spring is an oblique structure and is adapted to the oblique structure of one end of the reciprocating frame, the outer ring surface of the piston cylinder is penetrated and fixedly connected with a water inlet pipe, the end of the water inlet pipe away from the piston cylinder is penetrated and fixedly connected with a water tank, and the water tank is fixedly connected to the upper surface of the supporting frame.

Preferably, the lifting and feeding mechanism includes an inclined slide groove, the inclined slide groove is opened on the side of the protective shell, a pulley is slidably connected inside the inclined slide groove, and a side of the pulley away from the inclined slide groove is fixedly connected to a collection box.

Preferably, the lifting and feeding mechanism also includes a base, the base is fixedly connected to the upper part of the protective shell, the upper part of the base is rotatably connected to a connecting rod, one end of the connecting rod is rotatably connected to an oblique downward pressure rod, the end of the connecting rod away from the oblique downward pressure rod is rotatably connected to a rotating rod, and the rotating rod is hinged at the bottom of the collection box.

Compared with the prior art, the present invention has the following beneficial effects:

(1) The present invention relies on the second driving source to drive the rotation of the rotating gear, and at the same time drives the reciprocating plate and the pushing block fixedly connected to the reciprocating plate to reciprocate, so that the larger materials remaining on the filter plate can be pushed into the collection box through the discharge port, so that the larger fragments can be collected again, which can further improve the quality of the product and provide convenience for the next process. At the same time, since the reciprocating motion of the reciprocating plate will squeeze the piston rod, the water stored in the piston cylinder can be further sprayed out in the form of water mist through the nozzle, thereby achieving the effect of dust reduction and protecting the health of the staff;

(2) The present invention drives the reciprocating frame to reciprocate through the reciprocating motion of the reciprocating plate. When the reciprocating frame reciprocates, the piston rod is squeezed, and the water in the piston cylinder is further sprayed out through the nozzle in the form of water mist. Since the temperature in the crushing bin is relatively high, part of the water mist will float up. Since there is a crushing component blocking it from above, the water mist will adhere to the surface of the crushing component, thereby cooling the crushing component, further extending the service life of the equipment and reducing the equipment maintenance cost of the enterprise;

(3) The present invention can use the inclined block structure at one end of the reciprocating frame to squeeze the inclined downward pressure rod when the reciprocating frame moves toward the first driving source, thereby causing the connecting rod to rotate around the base. At the same time, the rotating rod will be lifted by the connecting rod. Since the rotating rod and the connecting rod are rotatably connected, the collecting box and the pulley fixed on one side of the collecting box will move along the guide of the inclined slide groove during the lifting process until the bottom surface of the collecting box is parallel to the upper surface of the protective shell. At this time, the collecting box will tilt toward the direction of the feed port of the device, and through its internal inclined structure, the material inside will be dumped onto the crushing component for secondary crushing, thereby improving the working efficiency of the machine and reducing the labor cost of the enterprise.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a process flow chart of metal recycling of waste circuit boards according to the present invention;

Fig. 2 is a schematic diagram of the overall structure of the present invention;

FIG3 is a schematic diagram of the position structure of the reciprocating frame and the piston rod in the present invention;

FIG4 is an enlarged schematic diagram of the structure at A in FIG3 ;

FIG5 is a schematic diagram of the position structure of the rotating gear and the reciprocating plate in the present invention;

FIG6 is a schematic cross-sectional view of the piston cylinder of the present invention;

7 is a schematic diagram of the position structure of the reciprocating frame and the oblique downward pressing rod in the present invention;

8 is a schematic diagram of the position structure of the discharge port and the collection box in the present invention;

9 is a schematic diagram of the structure of the collection box before movement in the present invention;

FIG. 10 is a schematic diagram of the structure of the collection box during movement in the present invention.

The numbers in the figure are:

1. Crusher body; 101. Support chassis; 102. First driving source; 103. Rotating shaft; 104. Crushing parts; 105. Protective housing;

2. Reciprocating spray mechanism; 201. Oblique blocking plate; 202. Second driving source; 203. Rotating gear; 204. Reciprocating plate; 205. Reciprocating frame; 206. Piston cylinder; 207. Piston sheet; 208. Return spring; 209. Piston rod; 210. Water inlet pipe; 211. Water storage tank; 212. Pushing block;

3. Lifting feeding mechanism; 301. Oblique chute; 302. Pulley; 303. Collection box; 304. Oblique pressing rod; 305. Connecting rod; 306. Base; 307. Rotating rod; 308. Discharging port.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Embodiment 1

Please refer to Figures 1 to 9, a metal recycling process for waste circuit boards includes the following steps:

Step 1: Pretreatment: rinse and clean the scrap metal plates to remove surface dirt;

Step 2: crushing, manually pouring the pre-treated waste circuit boards into the middle of two groups of crushing parts of the crushing equipment, then turning on the first driving source to make the crushing equipment crush, and obtaining small pieces of waste circuit board fragments;

Step 3: Crushing, conveying the small pieces of waste circuit board fragments to the crusher, crushing the small pieces of waste circuit board fragments into small particles;

Step 4: Metal separation: Use airflow sorting and vibration separation processes to separate valuable substances from small particles of waste circuit boards.

The specific crushing of step two is that firstly, the pre-treated waste circuit boards are manually poured into the middle of the two groups of crushing parts of the crushing equipment, and then the first driving source is turned on to make the equipment crush. Secondly, the second driving source is started. At this time, the waste circuit boards dropped by the two groups of crushing parts will be on the filter plate, and the reciprocating frame will move toward the direction of the first driving source, further squeezing the piston rod, so that the water inside the piston cylinder is sprayed out in the form of mist through the nozzle, so as to achieve the purpose of dust reduction. At the same time, by continuously rotating the rotating gear, the reciprocating plate and the reciprocating frame will move away from the first driving source. At this time, the material on the filter plate will be scraped into the collection box through the discharge port, and at the same time, the oblique structure of the reciprocating frame away from the first driving source will squeeze the oblique downward pressure rod, further pushing the collection box to move along the oblique chute, so as to achieve the purpose of secondary feeding.

Embodiment 2

As shown in FIGS. 1 to 5 , the crushing equipment includes a crusher body 1 , a reciprocating spray mechanism 2 is disposed on the upper portion of the crusher body 1 , and a lifting and feeding mechanism 3 is disposed on the side of the reciprocating spray mechanism 2 ;

The crusher body 1 includes a supporting frame 101, which is arranged above the ground. A first driving source 102 is fixedly connected to the top of the supporting frame 101. A rotating shaft 103 is fixedly connected to the output shaft of the first driving source 102. A crushing component 104 is fixedly connected to the outer surface of the rotating shaft 103 away from the first driving source 102. A protective shell 105 is arranged on the outer surface of the middle part of the rotating shaft 103. The rotating shaft 103 penetrates and is rotatably connected to the side of the protective shell 105. An inner cavity is opened in the middle part of the protective shell 105.

The reciprocating spray mechanism 2 includes an oblique blocking plate 201, which is fixedly connected to the side wall of the protective shell 105, and the second driving source 202 is fixedly connected to the bottom of the second driving source 202. The output shaft of the second driving source 202 is fixedly connected to a rotating gear 203, and a reciprocating plate 204 is meshed with teeth on the outer edge of the rotating gear 203. A reciprocating frame 205 is provided on the outer surface of the reciprocating plate 204. The reciprocating plate 204 is slidably connected to the middle part of the reciprocating frame 205, and a pusher block 212 is fixedly connected to the bottom of the reciprocating plate 204;

The reciprocating spray mechanism 2 further includes a piston cylinder 206, which is fixedly connected to the side wall of the protective shell 105, and has an inner cavity formed inside the piston cylinder 206. The inner wall of the piston cylinder 206 is slidably connected to a piston sheet 207.

A piston rod 209 is fixedly connected to the middle of the piston plate 207, and a return spring 208 is sleeved on the outer ring surface of the piston rod 209. The two ends of the return spring 208 are respectively fixedly connected to one side of the piston plate 207 and the side wall of the piston cylinder 206;

The end of the piston rod 209 away from the return spring 208 is an oblique structure and is adapted to the oblique structure of one end of the reciprocating frame 205. The outer ring surface of the piston cylinder 206 is penetrated and fixedly connected with a water inlet pipe 210. The end of the water inlet pipe 210 away from the piston cylinder 206 is penetrated and fixedly connected with a water storage tank 211. The water storage tank 211 is fixedly connected to the upper surface of the supporting base frame 101.

Among them: cylinders meshing with the teeth of the rotating gear 203 are evenly arranged in the middle of the reciprocating plate 204 close to the pushing block 212, the horizontal plane of the reciprocating frame 205 close to the first driving source 102 is an inclined structure, the vertical plane of the reciprocating frame 205 away from the first driving source 102 is an inclined structure, a one-way valve is arranged between the piston cylinder 206 and the water inlet pipe 210, and the piston rod 209 is an inclined structure at the end close to the reciprocating frame 205.

The effects achieved by this embodiment are as follows: in the prior art, although the scrap metal plates can be crushed, the scrap metal plate fragments after crushing will be incompletely crushed. Scrap metal plate fragments of different sizes and shapes are directly put into the crusher without screening. Large scrap metal plate fragments will increase the crushing time and affect the crushing quality; at the same time, the machine will generate dust during the crushing process. These dusts floating in the air will affect the working environment. Compared with the prior art, the second driving source 202 is used to drive the rotation of the rotating gear 203, and at the same time drive the reciprocating plate 204 and the pushing block 212 fixedly connected to the reciprocating plate 204 to reciprocate, so that the larger materials remaining on the filter plate can be pushed into the collection box 303 through the discharge port 308, so that the larger fragments can be collected again, which can further improve the quality of the product and prepare for the next process. It provides convenience. At the same time, the reciprocating motion of the reciprocating plate 204 will squeeze the piston rod 209, and further the water stored in the piston cylinder 206 can be sprayed out in the form of water mist through the nozzle, so as to achieve the effect of dust reduction and protect the health of the staff. At the same time, the reciprocating motion of the reciprocating plate 204 drives the reciprocating frame 205 to reciprocate. When the reciprocating frame 205 reciprocates, it will squeeze the piston rod 209, and further the water in the piston cylinder 206 will be sprayed out in the form of water mist through the nozzle. Since the temperature in the crushing bin is high, part of the water mist will float up. Since there is a crushing component 104 blocking it from above, the water mist will adhere to the surface of the crushing component 104, so as to cool the crushing component 104, which can further extend the service life of the equipment and reduce the maintenance cost of the equipment for the enterprise.

Further examples:

As shown in FIGS. 6 to 9 , the lifting and feeding mechanism 3 includes an oblique chute 301, which is provided on the side of the protective housing 105, and a pulley 302 is slidably connected inside the oblique chute 301, and a collecting box 303 is fixedly connected to the side of the pulley 302 away from the oblique chute 301;

The lifting and feeding mechanism 3 also includes a base 306, which is fixedly connected to the upper part of the protective shell 105, and the upper part of the base 306 is rotatably connected to a connecting rod 305, one end of the connecting rod 305 is rotatably connected to an oblique pressing rod 304, and one end of the connecting rod 305 away from the oblique pressing rod 304 is rotatably connected to a rotating rod 307, and the rotating rod 307 is hinged at the bottom of the collecting box 303;

Among them, a supporting frame 101 for supporting the base 306 is provided with a rectangular opening near the oblique pressing rod 304 , and a slope structure is provided at the bottom of the inner cavity of the collecting box 303 to facilitate the material to enter between the two groups of crushing components 104 .

The effects achieved by this embodiment are as follows: In the prior art, when the machine is continuously running at a high speed, heat will be generated due to friction, and the continuous heat will shorten the service life of the machine, further increasing the maintenance cost of the enterprise for the equipment. Compared with the prior art, the oblique block structure at one end of the reciprocating frame 205 can squeeze the oblique pressing rod 304 when the reciprocating frame 205 moves toward the first driving source 102, so that the connecting rod 305 can rotate around the base 306, and the rotating rod 307 will be lifted by the connecting rod 305. Since the rotating rod 307 and the connecting rod 305 are rotatably connected, the collecting box 303 and the pulley 302 fixed on one side of the collecting box 303 will move along the guide of the inclined slide groove 301 during the lifting process until the bottom surface of the collecting box 303 is parallel to the upper surface of the protective shell 105. At this time, the collecting box 303 will tilt toward the direction of the feed port of the device, and through its internal inclined structure, the material inside will be dumped onto the crushing component 104 for secondary crushing, thereby improving the working efficiency of the machine and reducing the labor cost of the enterprise.

The complete usage steps and working principle of the above embodiment are as follows:

In the initial state: the second driving source 202 in the reciprocating spray mechanism 2 is not started, the reciprocating plate 204 and the reciprocating frame 205 are both located in the middle of the inner cavity side wall of the protective shell 105, the return spring 208 is in an unstressed state, the oblique pressing rod 304, the connecting rod 305 and the rotating rod 307 in the lifting and feeding mechanism 3 are in a balanced state, and the feed port of the collecting box 303 opened near the side wall of the protective shell 105 is flush with the discharge port 308 opened on the side wall of the protective shell 105;

The following is the working process of the reciprocating spray mechanism 2:

Furthermore, the first driving source 102 is manually turned on. When the first driving source 102 is started, the crushing component 104 is driven to rotate counterclockwise through the fixedly connected rotating shaft 103. At this time, the waste electronic metal plate is manually poured through the feed port to between the two groups of crushing components 104. At this time, the two groups of crushing components 104 move toward each other, thereby achieving the effect of crushing the material;

When the scrap metal plates pass through the two groups of crushing components 104 and fall onto the filter plate, the qualified crushed materials will fall through the filter plate, but in the crushing process, incompletely crushed materials will still remain above the filter plate. At this time, the second driving source 202 is started. When the second driving source 202 is started, the rotating gear 203 will be driven to rotate clockwise through the rotating shaft. At this time, the reciprocating plate 204 meshing with the rotating gear 203 will be lifted along the inner wall of the reciprocating frame 205 toward the direction of the crushing component 104. At this time, the pushing block 212 fixedly connected to the lower part of the reciprocating plate 204 will be away from the surface of the filter plate. At the same time, when the rotating gear 203 continues to rotate clockwise, the reciprocating plate 204 will move against the reciprocating frame 205 toward the direction of the first driving source 102. At this time, the reciprocating plate 204 will be moved toward the direction of the first driving source 102. The long rod of the moving frame 205 on the side close to the first driving source 102 will move linearly along the guide groove provided through the inner wall of the protective shell 105. At the same time, since the end of the reciprocating moving frame 205 close to the first driving source 102 is a slope structure, and the end of the piston rod 209 close to the reciprocating moving frame 205 is also a slope structure, when the reciprocating moving frame 205 continues to move toward the first driving source 102, the reciprocating moving frame 205 will continue to squeeze the piston rod 209, and the piston rod 209 will carry the piston sheet 207 to move linearly along the inner wall of the piston cylinder 206, and spray the water inside the piston cylinder 206 through the nozzle in the form of water mist. At this time, the return spring 208 is in a stretched state, which can effectively reduce the dust from escaping into the air and ensure the health of the staff.

At the same time, since the two groups of crushing parts 104 will rub against the waste circuit boards while rotating, heat is generated, which further increases the temperature in the crushing chamber, thereby causing part of the water mist to evaporate, and the evaporated water mist will rise and adhere to the surfaces of the two groups of crushing parts 104, thereby achieving a cooling effect, further extending the service life of the equipment and reducing the cost of equipment maintenance for enterprises. When the rotating gear 203 continues to rotate clockwise, it rotates from the end of the reciprocating plate 204 close to the first driving source 102 to the end of the reciprocating plate 204 away from the first driving source 102. At the end, the amount of water in the piston cylinder 206 will reach the minimum value. When the rotating gear 203 continues to rotate, the reciprocating plate 204 will move down along the inner wall of the reciprocating frame 205. At this time, the bottom of the pushing block 212 will be close to the filter plate. At the same time, the reciprocating frame 205 will move away from the first driving source 102. The reset spring 208 will gradually reset the piston plate 207 and the piston rod 209 due to the decreasing influence of the external force. At the same time, the water in the water storage tank 211 will flow into the piston cylinder 206 through the one-way valve between the water inlet pipe 210 and the water storage tank 211.

Please refer to Figures 1 to 5 for the above working process.

The following is the working process of the lifting and feeding mechanism 3:

When the rotating gear 203 continues to rotate clockwise, the reciprocating plate 204 and the reciprocating frame 205 will move in the direction away from the first driving source 102. At this time, the oblique structure of the reciprocating frame 205 away from the first driving source 102 will gradually separate from the top of the oblique pressing rod 304. At the same time, the collecting box 303 will fall downward due to the gravity of its bottom. While falling, the pulley 302 will slide along the opening at the top of the protective shell 105 to the inside of the oblique slide groove 301. When the rotating gear 203 continues to rotate clockwise, the oblique block structure of the reciprocating frame 205 will completely separate from the top of the oblique pressing rod 304. At this time, the pulley 302 sliding in the oblique slide groove 301 will drive the collecting box 303 fixedly connected thereto to slide along the guide support frame 101 of the oblique slide groove 301.

At this time, the collecting box 303 hinged with the rotating rod 307 will be restricted by the inclined slide groove 301 and gradually parallel to the inclined downward pressing rod 304 on the same vertical plane. When the top of the inclined downward pressing rod 304 is against the horizontal plane of the bottom of the end of the reciprocating moving frame 205 away from the first driving source 102, the rectangular opening of the collecting box 303 close to the protective shell 105 will be aligned with the discharge port 308. At this time, the materials on the filter plate will be pushed by the pushing block 212 to move closer to the collecting box 303. At the same time, the inclined block fixedly connected to the filter plate will gather the materials at the discharge port 308, so as to facilitate the discharge. Through this device, the materials that do not meet the crushing requirements can be sent back between the two groups of crushing components 104 for a second crushing, thereby reducing the waste of resources and the labor cost of the enterprise.

Please refer to Figures 6 to 9 for the above working process.

Summary: The second driving source 202 is used to drive the rotation of the rotating gear 203, and at the same time drives the reciprocating plate 204 and the pushing block 212 fixedly connected to the reciprocating plate 204 to reciprocate, so that the larger materials remaining on the filter plate can be pushed into the collection box 303 through the discharge port 308, so that the larger fragments can be collected again, which can further improve the quality of the product and provide convenience for the next process. At the same time, the reciprocating motion of the reciprocating plate 204 will squeeze the piston rod 209, and further the water stored in the piston cylinder 206 can be sprayed out in the form of water mist through the nozzle, so as to achieve the effect of dust reduction and protect the health of the staff. Further, the reciprocating motion of the reciprocating plate 204 drives the reciprocating frame 205 to reciprocate, and then squeezes the piston rod 209, and further sprays the water in the piston cylinder 206 through the nozzle in the form of water mist. Due to the high temperature in the crushing bin, part of the water mist will appear on the surface. In the floating situation, due to the obstruction of the crushing component 104 above, the water mist will adhere to the surface of the crushing component 104, thereby cooling the crushing component 104, further extending the service life of the equipment and reducing the company's maintenance cost for the equipment. In addition, the oblique block structure at one end of the reciprocating frame 205 can squeeze the oblique downward pressure rod 304 when the reciprocating frame 205 moves toward the first driving source 102. Since the rotating rod 307 and the connecting rod 305 are rotatably connected, the collection box 303 and the pulley 302 fixed on one side of the collection box 303 will move along the guide of the oblique slide groove 301 during the lifting process until the bottom surface of the collection box 303 is parallel to the upper surface of the protective shell 105. At this time, the collection box 303 will tilt toward the direction of the device feed port, and through its internal oblique structure, the internal material will be dumped onto the crushing component 104 for secondary crushing, thereby improving the working efficiency of the machine and reducing the labor cost of the company.

The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. A metal recycling process for waste circuit boards, characterized in that it comprises the following steps: Step 1: Pretreatment: rinse and clean the scrap metal plates to remove surface dirt; Step 2: crushing, manually pouring the pre-treated waste circuit boards into the middle of two groups of crushing components (104) of the crushing equipment, and then turning on the first driving source (102) to make the crushing equipment crush to obtain small pieces of waste circuit board fragments; Step 3: Crushing, conveying the small pieces of waste circuit board fragments to the crusher, crushing the small pieces of waste circuit board fragments into small particles; Step 4: Metal separation: Use airflow sorting and vibration separation processes to separate valuable substances from small particles of waste circuit boards. 2. A metal recycling process for waste circuit boards according to claim 1, characterized in that the crushing in step 2 is specifically as follows: first, the pre-treated waste circuit boards are manually poured into the middle of two groups of crushing components (104) of the crushing equipment, and then the first driving source (102) is turned on to make the equipment crush, and then the second driving source (202) is started, and the waste circuit boards dropped by the two groups of crushing components (104) will be on the filter plate, and the reciprocating frame (205) will move toward the first driving source (102), further squeezing the piston rod (209), thereby making the piston cylinder (20 6) The internal water is sprayed out in the form of mist through the nozzle, thereby achieving the purpose of dust reduction. At the same time, by continuously rotating the rotating gear (203), the reciprocating plate (204) and the reciprocating frame (205) will move away from the first driving source (102). At this time, the material on the filter plate will be scraped into the collection box (303) through the discharge port (308). At the same time, the oblique structure of the end of the reciprocating frame (205) away from the first driving source (102) will squeeze the oblique pressing rod (304), further pushing the collection box (303) to move along the oblique chute (301), thereby achieving the purpose of secondary feeding. 3. A metal recycling process for waste circuit boards according to claim 2, characterized in that the crushing equipment comprises a crusher body (1), a reciprocating spray mechanism (2) is arranged on the upper part of the crusher body (1), and a lifting and feeding mechanism (3) is arranged on the side of the reciprocating spray mechanism (2). 4. A metal recycling process for waste circuit boards according to claim 3, characterized in that the crusher body (1) includes a supporting frame (101), the supporting frame (101) is arranged above the ground, a first driving source (102) is fixedly connected to the top of the supporting frame (101), the output shaft of the first driving source (102) is fixedly connected to a rotating shaft (103), a crushing component (104) is fixedly connected to the outer surface of the rotating shaft (103) away from the first driving source (102), a protective shell (105) is arranged on the outer surface of the middle part of the rotating shaft (103), the rotating shaft (103) passes through and is rotatably connected to the side of the protective shell (105), and an inner cavity is opened in the middle part of the protective shell (105). 5. A metal recycling process for waste circuit boards according to claim 4, characterized in that the reciprocating spray mechanism (2) comprises an oblique blocking plate (201), the oblique blocking plate (201) is fixedly connected to the side wall of the protective shell (105), the second driving source (202) is fixedly connected to the bottom of the second driving source (202), the output shaft of the second driving source (202) is fixedly connected to a rotating gear (203), the outer edge of the rotating gear (203) is meshed with a reciprocating plate (204), the outer surface of the reciprocating plate (204) is provided with a reciprocating frame (205), the reciprocating plate (204) is slidably connected to the middle part of the reciprocating frame (205), and the bottom of the reciprocating plate (204) is fixedly connected to a pushing block (212). 6. A process for recycling metal from waste circuit boards according to claim 4, characterized in that the reciprocating spray mechanism (2) also includes a piston cylinder (206), the piston cylinder (206) is fixedly connected to the side wall of the protective shell (105), an inner cavity is defined inside the piston cylinder (206), and a piston sheet (207) is slidably connected to the inner wall of the piston cylinder (206). 7. A process for recycling metal from waste circuit boards according to claim 6, characterized in that a piston rod (209) is fixedly connected to the middle of the piston plate (207), a return spring (208) is sleeved on the outer ring surface of the piston rod (209), and two ends of the return spring (208) are respectively fixedly connected to one side of the piston plate (207) and the side wall of the piston cylinder (206). 8. A process for recycling metal from waste circuit boards according to claim 7, characterized in that the end of the piston rod (209) away from the return spring (208) is of an oblique structure and is adapted to the oblique structure of one end of the reciprocating frame (205), the outer ring surface of the piston cylinder (206) is penetrated and fixedly connected with a water inlet pipe (210), the end of the water inlet pipe (210) away from the piston cylinder (206) is penetrated and fixedly connected with a water tank (211), and the water tank (211) is fixedly connected to the upper surface of the supporting frame (101). 9. A waste circuit board metal recycling process according to claim 4, characterized in that the lifting and feeding mechanism (3) includes an oblique slide groove (301), the oblique slide groove (301) is opened on the side of the protective shell (105), a pulley (302) is slidably connected inside the oblique slide groove (301), and a collection box (303) is fixedly connected to the side of the pulley (302) away from the oblique slide groove (301). 10. A metal recycling process for waste circuit boards according to claim 9, characterized in that the lifting and feeding mechanism (3) also includes a base (306), the base (306) is fixedly connected to the upper part of the protective shell (105), the upper part of the base (306) is rotatably connected to a connecting rod (305), one end of the connecting rod (305) is rotatably connected to an oblique downward pressure rod (304), the end of the connecting rod (305) away from the oblique downward pressure rod (304) is rotatably connected to a rotating rod (307), and the rotating rod (307) is hinged at the bottom of the collection box (303).