CN115138477B

CN115138477B - A detect screening plant for multiple copper fillings mixture

Info

Publication number: CN115138477B
Application number: CN202211036655.5A
Authority: CN
Inventors: 胡铜生; 查钢强; 汪东; 王成楼; 金永胜; 张新磊; 张磊
Original assignee: Tongling Nonferrous Metals Stock Tongguan Brass Bar Co ltd; Jiangsu Imdetek Precision Instrument Co ltd
Current assignee: Tongling Nonferrous Metals Stock Tongguan Brass Bar Co ltd; Jiangsu Imdetek Precision Instrument Co ltd
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2022-11-25
Anticipated expiration: 2042-08-29
Also published as: CN115138477A

Abstract

The invention discloses a detection and screening device for multiple copper scrap mixtures, and relates to the technical field of copper scrap mixture screening.

Description

A detect screening plant for multiple copper fillings mixture

Technical Field

The invention relates to the technical field of copper scrap mixture screening, in particular to a detection screening device for various copper scrap mixtures.

Background

The copper scrap mixture is a mixture of copper scraps, iron scraps and aluminum scraps generated in the turning process, the mixture cannot be directly utilized, and the mixture needs to be distinguished and divided into the copper scraps, the iron scraps and the aluminum scraps to have certain recycling value;

in the prior art, the screening of the copper scrap mixture has the following problems:

1. when the copper scrap mixture is poured into the screening device, the copper scrap mixture is blocked at the position of the feed opening, so that the screening of the screening device on the copper scrap mixture is influenced;

2. the screening of copper scraps, scrap iron and aluminum scraps in the copper scrap mixture is insufficient, so that the copper scraps, the scrap iron and the aluminum scraps are mixed to a certain degree;

therefore, people urgently need a detection screening device for various copper scrap mixtures to solve the technical problems.

Disclosure of Invention

The invention aims to provide a detection screening device for various copper scrap mixtures, which aims to solve the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a detect screening plant for multiple copper fillings mixture, this screening plant is including the screening box, screening box upper end is provided with the feeder hopper, the feeder hopper is arranged in throwing the copper fillings mixture into the screening box, screening box and feeder hopper junction are provided with supplementary unloading chamber, the cross section in supplementary unloading chamber is circular, supplementary unloading intracavity portion installs the unloading roller, the cross section of unloading roller is oval, the unloading roller is arranged in rotating the copper fillings mixture in the in-process supplementary feeder hopper and carries out the unloading, avoids the copper fillings mixture to block up in the feeder hopper, the unloading roller drives impact structure and strikes the copper fillings mixture in the feeder hopper, further avoids the copper fillings mixture to block up in the feeder hopper, influences the unloading, the unloading roller below is provided with fan group, fan group is used for producing wind-force, sieves copper fillings, iron fillings and aluminium fillings that the weight is different, screening box bottom both sides all are provided with first discharge gate, and the weight of aluminium fillings is less, can follow first discharge gate under the blowing of fan group, screening box bottom is provided with the second discharge gate, and the weight of copper fillings and the electromagnet can be used for the discharge gate is carried out through the electro-magnet after the second electro-magnet, the electro-magnet is carried out to the discharge gate, the electro-magnet, the discharge gate is carried out the electro-magnet through the second discharge gate, the electro-magnet is carried out the electro-magnet after the electro-magnet is carried out.

According to the preferable technical scheme, the blanking roller is driven to rotate by a servo motor, an output shaft of the servo motor is connected with the blanking roller by a rotating sleeve, the driving force of the servo motor is transmitted to the rotating sleeve by the output shaft, the blanking roller is driven to rotate by the rotating sleeve, a fixed loop bar is inserted into the rotating sleeve, one end, far away from the servo motor, of the fixed loop bar is fixedly mounted on the screening box, one end, far away from the servo motor, of the blanking roller is also provided with the rotating sleeve, the rotating sleeve is rotatably connected with the fixed loop bar by a bearing, so that the fixed loop bar does not rotate along with the blanking roller when the blanking roller rotates, a limiting disc is arranged at the joint of the rotating sleeve and the fixed loop bar, and the stability of connection between the rotating sleeve and the fixed loop bar is guaranteed;

at least two of the impact structures are fixedly arranged on the fixed loop bar;

the impact structure comprises an impact hole, a fixed seat, a telescopic cavity, a telescopic spring and an impact rod;

at least two impact holes are formed in the long shaft end of the blanking roller, when the long shaft end of the blanking roller rotates to a position under the feeding hopper, the impact structure can be popped out from the impact holes, copper scrap mixed materials blocked under the feeding hopper are impacted, the stable structure of the impact structure is damaged, the copper scrap mixed materials cannot be blocked in the feeding hopper, at least two fixing seats are mounted on the fixing sleeve rod and correspond to the impact holes one to one, a telescopic cavity is arranged inside the fixing seat, a telescopic spring is mounted inside the telescopic cavity, an impact rod is arranged at the top end of the telescopic spring, the telescopic spring is used for providing a power source for impact of the impact rod, the cross section of the whole blanking roller is oval, when the short shaft of the blanking roller rotates to the position of the impact rod, the blanking roller can extrude the impact rod, the telescopic spring compresses the impact rod, and the impact of the copper scrap mixed materials in the feeding hopper is avoided from being blocked due to the arrangement of the impact holes.

As a preferred technical scheme, the impact structure comprises a fixed frame, an expansion link, a limit button, an impact column and a driving seat;

feeder hopper internally mounted has the mount that distributes about two at least, slidable mounting has two at least telescopic links on the mount, the telescopic link top is provided with limit button, limit button is used for preventing to break away from between telescopic link and the mount, the telescopic link lower extreme is provided with two at least impact posts, impact the post and be used for assaulting the copper scraps mixture in the feeder hopper, destroys its equilibrant, avoids taking place to block up, the telescopic link bottom is provided with the drive seat, the drive seat is used for accepting the extrusion of unloading roller, drives whole impact structure intermittent type nature up-and-down motion, utilizes the impact post to assault the copper scraps mixture in the feeder hopper.

As a preferred technical scheme, wedge-shaped strips are arranged on two sides of the feeding hopper and used for reducing the contact area between the copper scrap mixture and the feeding hopper and reducing the probability of blockage of the copper scrap mixture in the feeding hopper.

As preferred technical scheme, the wedge type strip of feeder hopper both sides sets up in turn, and the purpose is for making the copper scraps mixture can not appear blockking up at the feeder hopper for the wedge type strip of feeder hopper both sides can promote the horizontal hunting unloading of copper scraps mixture, because the wedge type strip that sets up in turn can change the width change of feeder hopper, reduces the risk that copper scraps mixture blockked up.

According to the preferable technical scheme, the bottom end of the wedge-shaped strip is provided with the air blowing hole, and the air blowing hole is used for blowing air to the side wall of the feeding hopper, so that a layer of air film can be formed between the side wall of the feeding hopper and the copper scrap mixture, the friction force between the copper scrap mixture and the side wall of the feeding hopper is reduced, and blockage is avoided.

As a preferred technical scheme, supplementary unloading chamber top both sides are provided with the extrusion chamber, the extrusion chamber outside is close to unloading roller one end and is provided with movable chamber, the inside extrusion gasbag that is provided with of extrusion chamber, the inside stripper plate that is provided with of activity chamber, be provided with reset spring between stripper plate and the activity chamber, reset spring is used for realizing automatic re-setting after the extrusion gasbag is extruded, the rotation of unloading roller can be intermittent type nature extrude the stripper plate, and then realize the intermittent type nature extrusion to the extrusion gasbag, pass through the hose connection between extrusion gasbag and the gas hole, and install first check valve on the hose, the direction of first check valve is extrusion gasbag to the gas hole direction, and then realizes the intermittent type nature air feed in gas hole, also can provide certain effort for the copper bits mixture, still be provided with the intake pipe on the extrusion gasbag, install the second check valve in the intake pipe, the direction of second check valve is external to the extrusion gasbag direction.

As preferred technical scheme, the cross section of electro-magnet is triangle-shaped, and the purpose is in order to realize the unloading to iron fillings in order to be convenient for, simultaneously, when copper bits or aluminium bits fall to the electro-magnet top in the unloading process, also can automatic landing, can not pile up above the electro-magnet.

Compared with the prior art, the invention has the beneficial effects that:

1. the feeding device is provided with the impact structure, and under the arrangement of the oval feeding roller, the intermittent impact of the impact structure on the copper scrap mixture in the feeding hopper can be realized, the balance of the copper scrap mixture in the feeding hopper is damaged, and the influence of the blockage of the copper scrap mixture in the feeding hopper on the normal feeding of the copper scrap mixture is avoided.

2. The copper scrap feeding device is provided with the extrusion air bag and the extrusion plate, under the arrangement of the oval blanking roller, intermittent extrusion of the extrusion plate can be realized, and further intermittent extrusion of the extrusion air bag is realized, so that air can be supplied to the air blowing holes, power is provided for blanking of a copper scrap mixture, an air film is formed between the copper scrap mixture and the side wall of the feeding hopper, friction is reduced, the copper scrap mixture is prevented from being blocked in the feeding hopper, meanwhile, the rotating blanking roller is used for providing power for air supply of the air blowing holes, an additional air supply source is not needed, and the energy-saving and environment-friendly effects are achieved.

Drawings

FIG. 1 is a schematic structural diagram of a first embodiment of a detection screening device for multiple copper scrap mixtures according to the invention;

FIG. 2 is a schematic structural diagram of a second embodiment of the detecting and screening device for multiple copper scrap mixtures, provided by the invention;

FIG. 3 is a schematic structural diagram of the interior of a screening box of the detection screening device for various copper scrap mixtures, provided by the invention;

FIG. 4 is a schematic structural diagram of the interior of a screening box of a first embodiment of the detection screening device for multiple copper scrap mixtures, disclosed by the invention;

FIG. 5 is a schematic structural diagram of the interior of a screening box of a second embodiment of the detection screening device for multiple copper scrap mixtures, provided by the invention;

FIG. 6 is a schematic structural diagram of a region A in FIG. 4 of the detecting and screening device for multiple copper scrap mixtures according to the invention;

FIG. 7 is a schematic structural diagram of a feeding roller of the detecting and screening device for a plurality of copper scrap mixtures according to the present invention;

FIG. 8 is a schematic structural diagram of the interior of a feeding roller of the detecting and screening device for a plurality of copper scrap mixtures according to the invention;

FIG. 9 is a schematic structural diagram of a fixing seat of a detecting and screening device for various copper scrap mixtures according to the present invention;

FIG. 10 is a schematic structural diagram of the inside of a fixed seat of a detecting and screening device for various copper scrap mixtures according to the invention;

FIG. 11 is a schematic structural diagram of a second embodiment of an impact device of the detecting and screening device for the mixture of the copper scraps, disclosed by the invention;

reference numbers in the figures: 1. screening the box body; 2. a feed hopper; 3. an auxiliary blanking cavity; 4. a blanking roller;

501. an impingement hole; 502. a fixed seat; 503. a telescopic cavity; 504. a tension spring; 505. an impact bar;

51. a fixed mount; 52. a telescopic rod; 53. a limit button; 54. an impact column; 55. a driving seat;

6. a fan unit; 7. a first discharge port; 8. a second discharge port; 9. an electromagnet; 10. rotating the sleeve; 11. fixing the loop bar; 12. a limiting disc; 13. a wedge-shaped strip; 14. an extrusion chamber; 15. a movable cavity; 16. extruding the air bag; 17. a pressing plate; 18. a return spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows: as shown in fig. 1-4 and 6-10, the invention provides the following technical scheme, a detecting and screening device for a plurality of copper scrap mixtures, the screening device comprises a screening box body 1, wherein the upper end of the screening box body 1 is provided with a feed hopper 2, the feed hopper 2 is used for feeding a copper scrap mixture into the screening box body 1, an auxiliary blanking cavity 3 is arranged at the joint of the screening box body 1 and the feed hopper 2, the cross section of the auxiliary blanking cavity 3 is circular, a blanking roller 4 is arranged in the auxiliary blanking cavity 3, the cross section of the blanking roller 4 is elliptical, the blanking roller 4 is used for blanking copper scrap mixture in the auxiliary feed hopper 2 in the rotating process, the copper scrap mixture is prevented from being blocked in the feed hopper 2, the blanking roller 4 drives an impact structure to impact the copper scrap mixture in the feed hopper 2, the copper scrap mixture is further prevented from being blocked in the feed hopper 2, the blanking is influenced, a fan unit 6 is arranged below the blanking roller 4, and the fan unit 6 is used for generating wind power, copper scraps, iron scraps and aluminum scraps with different weights are screened, first discharge ports 7 are arranged on two sides of the bottom of the screening box body 1, the weight of the aluminum scraps is smaller, the aluminum scraps and the copper scraps can be discharged from a first discharge port 7 under the blowing of a fan set 6, a second discharge port 8 is arranged at the bottom of the screening box body 1, the weight of the copper scraps is large, the copper scraps are less influenced by the wind power of the fan set 6 and can be directly discharged from the second discharge port 8, an electromagnet 9 is arranged above the first discharge port 7, the electromagnet 9 is used for adsorbing the iron scraps, and after the aluminum scraps and the copper scraps are discharged through the first discharge port 7 and the second discharge port 8 respectively, the electro-magnet 9 to cut off the power supply and handle, then the iron fillings adsorbed on electro-magnet 9 can be discharged through second discharge gate 8, and then realize the screening to the copper fillings mixture.

The blanking roller 4 is driven to rotate by a servo motor, an output shaft of the servo motor is connected with the blanking roller 4 through a rotating sleeve 10, the driving force of the servo motor is transmitted to the rotating sleeve 10 through the output shaft, the blanking roller 4 is driven to rotate by the rotating sleeve 10, a fixed loop bar 11 is inserted into the rotating sleeve 10, one end, far away from the servo motor, of the fixed loop bar 11 is fixedly installed on the screening box body 1, one end, far away from the servo motor, of the blanking roller 4 is also provided with the rotating sleeve 10, the rotating sleeve 10 is rotatably connected with the fixed loop bar 11 through a bearing, so that when the blanking roller 4 rotates, the fixed loop bar 11 does not rotate together with the blanking roller 4, a limiting disc 12 is arranged at the joint of the rotating sleeve 10 and the fixed loop bar 11, and the stability of connection between the rotating sleeve 10 and the fixed loop bar 11 is ensured;

at least two impact structures are fixedly arranged on the fixed loop bar 11;

the impact structure comprises an impact hole 501, a fixed seat 502, a telescopic cavity 503, a telescopic spring 504 and an impact rod 505;

at least two impact holes 501 are formed in the long shaft end of the blanking roller 4, when the long shaft end of the blanking roller 4 rotates to a position right below the feeding hopper 2, the impact structure can be popped out from the impact holes 501 to impact a copper scrap mixture blocked by the position right below the feeding hopper 2, the stable structure of the copper scrap mixture is damaged, the copper scrap mixture cannot be blocked in the feeding hopper 2, at least two fixing seats 502 are installed on the fixing sleeve rod 11, the fixing seats 502 correspond to the impact holes 501 one by one, telescopic cavities 503 are arranged inside the fixing seats 502, telescopic springs 504 are installed inside the telescopic cavities 503, impact rods 505 are arranged at the top ends of the telescopic springs 504, the telescopic springs 504 are used for providing power sources for impact of the impact rods 505, because the cross section of the whole blanking roller 4 is elliptical, when the short shaft of the blanking roller 4 rotates to the position of the impact rods 505, the blanking roller 4 can extrude the impact rods 505 to compress the impact rods 504, when the long shaft of the blanking roller 4 rotates to the position of the impact rods 505, the impact rods 501 can impact the copper scrap mixture in the feeding hopper 2, and the impact of the copper scrap mixture can be prevented from being blocked.

The two sides of the feed hopper 2 are provided with wedge-shaped strips 13, and the wedge-shaped strips 13 are used for reducing the contact area between the copper scrap mixture and the feed hopper 2 and reducing the probability of blockage of the copper scrap mixture in the feed hopper 2.

The wedge type strip 13 of feeder hopper 2 both sides sets up in turn, and the purpose is in order to make the copper scraps mixture can not appear blockking up at feeder hopper 2 for the wedge type strip 13 of feeder hopper 2 both sides can promote the horizontal hunting unloading of copper scraps mixture, because the wedge type strip 13 of setting up in turn can change the width change of feeder hopper 2, reduces the risk that the copper scraps mixture blockked up.

The bottom end of the wedge-shaped strip 13 is provided with a blowing hole which is used for blowing air to the side wall of the feed hopper 2, so that a layer of air film can be formed between the side wall of the feed hopper 2 and the copper scrap mixture, the friction force between the copper scrap mixture and the side wall of the feed hopper 2 is reduced, and blockage is avoided.

The two sides of the top end of the auxiliary blanking cavity 3 are provided with extrusion cavities 14, one end of the outer side of each extrusion cavity 14, which is close to the blanking roller 4, is provided with a movable cavity 15, an extrusion air bag 16 is arranged in each extrusion cavity 14, an extrusion plate 17 is arranged in each movable cavity 15, a reset spring 18 is arranged between each extrusion plate 17 and each movable cavity 15, each reset spring 18 is used for achieving automatic reset after the corresponding extrusion air bag 16 is extruded, the rotation of each blanking roller 4 can intermittently extrude the corresponding extrusion plate 17, intermittent extrusion of the corresponding extrusion air bag 16 is achieved, the extrusion air bags 16 are connected with air blowing holes through hoses, a first check valve is installed on each hose, the direction of each first check valve is the direction from the corresponding extrusion air bag 16 to the air blowing holes, intermittent air supply of the air blowing holes is achieved, a certain acting force can be provided for copper scrap mixture, the corresponding extrusion air bags 16 are further provided with second check valves, and the direction of the corresponding second check valves is the direction from the outside to the corresponding extrusion air bags 16.

The cross section of the electromagnet 9 is triangular, so that scrap iron blanking can be conveniently realized, and meanwhile, when copper scraps or aluminum scraps fall above the electromagnet 9 in the blanking process, the scrap iron can automatically slide off and cannot be accumulated above the electromagnet 9.

The second embodiment: as shown in fig. 5 and 11, the impact structure includes a fixed frame 51, a telescopic rod 52, a limit button 53, an impact column 54 and a driving seat 55;

2 internally mounted of feeder hopper has two at least mounts 51 that distribute from top to bottom, slidable mounting has two at least telescopic links 52 on mount 51, telescopic link 52 top is provided with limit button 53, limit button 53 is used for preventing breaking away from between telescopic link 52 and the mount 51, telescopic link 52 lower extreme is provided with two at least impact post 54, impact post 54 is arranged in assaulting the copper scraps mixture in feeder hopper 2, destroy its equilibrant, avoid taking place the jam, telescopic link 52 bottom is provided with drive seat 55, drive seat 55 is used for accepting the extrusion of unloading roller 4, drive whole impact structure intermittent type nature up-and-down motion, utilize impact post 54 to assault the copper scraps mixture in feeder hopper 2.

The working principle of the invention is as follows: when the device is used, a mixture mixed with copper scraps, iron scraps and aluminum scraps is put into the feed hopper 2, the mixture enters the screening box body 1 through the feed hopper 2, wind power is provided for the aluminum scraps with smaller weight to the first discharge port 7 through the fan set 6 in the screening box body 1, the copper scraps with larger weight directly fall into the second discharge port 8 to finish discharging, the iron scraps are adsorbed on the electromagnet 9 after being blown, the power supply of the electromagnet 9 is disconnected after the aluminum scraps and the copper scraps finish discharging, and at the moment, the iron scraps adsorbed on the electromagnet 9 can automatically fall off and finish discharging through the second discharge port 8;

in a first embodiment:

when the mixture is blocked in the feed hopper 2, the servo motor drives the blanking roller 4 to rotate, when the long shaft end of the blanking roller 4 rotates to a position right below the feed hopper 2, the impact structure can pop out of the impact hole 501 to impact the copper scrap mixture blocked right below the feed hopper 2, the stable structure of the copper scrap mixture is damaged, the copper scrap mixture cannot be blocked in the feed hopper 2, when the short shaft end of the blanking roller 4 rotates to a position right below the feed hopper 2, the impact rod 505 can be collected into the fixed seat 502, and then intermittent impact on the mixture in the feed hopper 2 can be realized;

in a second embodiment:

when the long shaft end of the blanking roller 4 runs to the position right below the feeding hopper 2, the long shaft end extrudes the driving seat 55, so that the telescopic rod 52 moves upwards to drive the impact column 54 to impact the mixture in the feeding hopper 2, at the moment, the balance of the mixture in the feeding hopper 2 is damaged, namely the blockage of the mixture in the feeding hopper 2 is broken, and the elliptical blanking roller 4 is arranged, so that intermittent impact can be realized, and the blockage of the mixture is further avoided;

at unloading roller 4 pivoted in-process, the major axis end of unloading roller 4 can lead to the fact the extrusion to stripper plate 17, at this moment, stripper plate 17 can lead to the fact the extrusion to extrusion gasbag 16, make the inside gas of extrusion gasbag 16 can carry to blow hole position department through the hose, blow out through the hole of blowing, at this moment, the gas that blows out can form one deck air film between feeder hopper 2 lateral wall and mixture, the frictional force between mixture and feeder hopper 2 has been reduced, and simultaneously, the gas that blows out can also promote the mixture downstream, can be very big degree avoid the mixture to appear blockking up in feeder hopper 2 inside, and, be the wedge type strip 13 of alternative setting, can change the inside diameter change of feeder hopper 2, make the mixture at the in-process of unloading, realize the swing of certain degree, make things convenient for the unloading of mixture.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a detect screening plant for multiple copper fillings mixture which characterized in that: the screening device comprises a screening box body (1), wherein a feed hopper (2) is arranged at the upper end of the screening box body (1), an auxiliary blanking cavity (3) is arranged at the joint of the screening box body (1) and the feed hopper (2), the cross section of the auxiliary blanking cavity (3) is circular, a blanking roller (4) is arranged inside the auxiliary blanking cavity (3), the cross section of the blanking roller (4) is oval, the blanking roller (4) drives an impact structure to impact a copper scrap mixture in the feed hopper (2), a fan group (6) is arranged below the blanking roller (4), first discharge holes (7) are formed in two sides of the bottom of the screening box body (1), a second discharge hole (8) is formed in the bottom of the screening box body (1), and an electromagnet (9) is arranged above the first discharge holes (7);

the feeding roller (4) is driven to rotate by a servo motor, an output shaft of the servo motor is connected with the feeding roller (4) through a rotating sleeve (10), the driving force of the servo motor is transmitted to the rotating sleeve (10) through the output shaft, the feeding roller (4) is driven to rotate by the rotating sleeve (10), a fixed sleeve rod (11) penetrates through the rotating sleeve (10), one end, far away from the servo motor, of the fixed sleeve rod (11) is fixedly installed on the screening box body (1), one end, far away from the servo motor, of the feeding roller (4) is also provided with the rotating sleeve (10), the rotating sleeve (10) is rotatably connected with the fixed sleeve rod (11) through a bearing, and a limiting disc (12) is arranged at the connection position of the rotating sleeve (10) and the fixed sleeve rod (11);

at least two of the impact structures are fixedly arranged on a fixed loop bar (11);

the impact structure comprises an impact hole (501), a fixed seat (502), a telescopic cavity (503), a telescopic spring (504) and an impact rod (505);

at least two impact holes (501) have been seted up to the major axis end of unloading roller (4), install two at least fixing bases (502) on fixed loop bar (11), fixing base (502) and impact hole (501) one-to-one, fixing base (502) inside is provided with flexible chamber (503), flexible chamber (503) internally mounted has expanding spring (504), expanding spring (504) top is provided with strikes pole (505).

2. The device for detecting and screening a plurality of copper scrap mixtures according to claim 1, wherein: the impact structure comprises a fixed frame (51), an expansion rod (52), a limit button (53), an impact column (54) and a driving seat (55);

feeder hopper (2) internally mounted has mount (51) that distribute from top to bottom two at least, slidable mounting has two at least telescopic links (52) on mount (51), telescopic link (52) top is provided with spacing button (53), telescopic link (52) lower extreme is provided with two at least impact post (54), telescopic link (52) bottom is provided with drive seat (55).

3. The test screening device for copper scrap mixtures according to claim 1 or 2, characterized in that: and wedge-shaped strips (13) are arranged on two sides of the feed hopper (2).

4. The device for detecting and screening a plurality of copper scrap mixtures according to claim 3, characterized in that: the wedge-shaped strips (13) on the two sides of the feed hopper (2) are alternately arranged.

5. The device for detecting and screening a plurality of copper scrap mixtures according to claim 4, wherein: and the bottom end of the wedge-shaped strip (13) is provided with a gas blowing hole.

6. The device for detecting and screening a plurality of copper scrap mixtures according to claim 5, wherein: supplementary unloading chamber (3) top both sides are provided with extrusion chamber (14), extrusion chamber (14) outside is close to unloading roller (4) one end and is provided with movable chamber (15), extrusion chamber (14) inside is provided with extrusion gasbag (16), activity chamber (15) inside is provided with stripper plate (17), be provided with reset spring (18) between stripper plate (17) and activity chamber (15), through hose connection between extrusion gasbag (16) and the hole of blowing, and install first check valve on the hose, still be provided with the intake pipe on extrusion gasbag (16), install the second check valve in the intake pipe.

7. The test screening device for the copper scrap mixtures according to any one of claims 1-2 and 4-6, wherein the test screening device comprises: the cross section of the electromagnet (9) is triangular.