Energy-saving crushing device for waste metal recycling

Abstract

This invention provides an energy-saving crushing device for recycling scrap metal, relating to the field of crushing device technology. It includes a base, with a housing fixedly connected to the upper surface of the base, an adjusting mechanism, and a limiting mechanism. The limiting mechanism is located inside a moving block, which has a transverse groove. Through the coordinated operation of the adjusting mechanism and the limiting mechanism, the device automatically triggers a pressure crushing action to address the problem of large or high-hardness metal blocks easily getting stuck. This avoids material blockage caused by the crushing roller jamming, and at the same time, prevents the drive motor from burning out due to overload operation, significantly reducing the equipment failure rate and extending the overall service life of the device. Furthermore, the limiting mechanism can stably limit the position of the adjusting structure, preventing it from sliding randomly due to material compression, ensuring the spacing accuracy of the crushing structure in conventional crushing operations, and ensuring consistent crushing effects for different batches of scrap metal.

Description

Technical Field

[0001] This invention relates to the field of crushing equipment technology, and in particular to an energy-saving crushing equipment for recycling waste metals. Background Technology

[0002] In the industrial process of scrap metal recycling, crushing is one of the core processes. It can process irregular and large-volume scrap metal into uniform metal fragments, which facilitates subsequent transportation, smelting and processing. At present, the mainstream in the industry is to use double-roll crushing devices to complete the crushing operation of scrap metal. Such devices are usually equipped with a base, shell, feeding structure, discharging structure and a pair of meshing crushing rollers. The drive motor drives the crushing rollers to rotate through the transmission structure. After the scrap metal is fed into the feeding structure, it is crushed by the squeezing and cutting action of the two crushing rollers. The crushed metal fragments are then collected through the discharging structure. Due to its simple structure and convenient operation, this type of crushing device is widely used in various scrap metal recycling and crushing scenarios.

[0003] In actual use, the spacing between the crushing rollers in existing double-roller scrap metal crushing devices is mostly fixed. When processing scrap metal blocks that are too large or have high hardness, the metal blocks are prone to getting stuck between the two crushing rollers, causing the rollers to jam and become unable to rotate. This not only causes material blockage at the feed inlet but also puts the drive motor under overload, which can easily lead to equipment failures such as motor burnout and reduce the service life of the device. Although some devices have added a crushing roller spacing adjustment structure, they lack stable limiting and fixing components. The adjustment mechanism is prone to sliding freely due to material compression, causing the crushing roller spacing to deviate, which affects the accuracy and efficiency of conventional crushing operations. Summary of the Invention

[0004] The present invention solves the problems mentioned in the background art by automatically adjusting the crushing interval according to the material and size of the crushed metal blocks, and classifying the incompletely crushed and completely crushed metal blocks according to the state of the crushed metal blocks.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an energy-saving waste metal recycling crushing device, comprising a base, a shell fixedly connected to the upper surface of the base, a feeding rack fixedly connected to the upper surface of the shell, a discharging rack fixedly connected to the base at the central axis of the shell, and a crushing roller rotatably connected to the inner surface of the shell.

[0006] An adjusting mechanism includes a connecting rod, a rotating shaft fixedly connected to the upper end of the connecting rod, the shaft center being rotatably connected to the end of the crushing roller, a base fixedly connected to the upper surface of the base, a sliding groove being provided inside the base, a slider being slidably connected inside the base, the upper surface of the slider being fixedly connected to the connecting rod, and moving blocks being slidably connected to both ends of the sliding groove.

[0007] A limiting mechanism is provided inside the moving block. A horizontal groove is provided inside the moving block. A support block is slidably connected inside the horizontal groove. A snap-fit ​​groove is provided on the surface of the horizontal groove. A snap-fit ​​block is slidably connected inside the support block. The snap-fit ​​block snaps into the snap-fit ​​groove.

[0008] Preferably, the surface of the base is provided with a drive motor, which drives the crushing roller to rotate through a transmission chain. There are two crushing rollers that mesh with each other, and the crushing rollers are located in the middle of the feed rack and the discharge rack.

[0009] Preferably, the discharge rack is a V-shaped hollow rack, the length and width of the upper end of the discharge rack are both greater than the length and total width of the two crushing rollers, the lower end of the discharge rack has two discharge ports, a material distribution mechanism is provided at the center of the two discharge ports, and two material holding boxes are provided on the lower side of the two discharge ports.

[0010] Preferably, the housing has a feeding groove at the upper end of the crushing roller, the feeding frame is fixedly connected inside the feeding groove, and the width and length of the lower port of the feeding frame are less than the length and total width of the two crushing rollers.

[0011] Preferably, a stepper motor is provided at the center of the moving block, and a lead screw is fixedly connected to the output shaft of the stepper motor. A threaded groove is provided inside the slider, and the lead screw is engaged inside the threaded groove. Limiting rods are fixedly connected to the upper and lower ends of the surface of the moving block. The limiting rods are inserted inside the slider, and a limiting plate is fixedly connected to the end of the limiting rod away from the moving block.

[0012] Preferably, the side wall of the support block has a vertical groove, the snap-fit ​​block is slidably connected inside the vertical groove, a limit spring is fixedly connected to one end of the snap-fit ​​block near the bottom of the vertical groove, and a support rod is fixedly connected to the surface of the support block away from the bottom of the horizontal groove, and a return spring is wound around the surface of the support rod.

[0013] Preferably, the material distribution mechanism includes a motor, which is rotatably connected inside the discharge rack, and a drive gear is fixedly connected to the output end of the motor. A transmission gear meshes with the side of the drive gear, a rotating shaft is fixedly connected to the side wall of the transmission gear, a baffle is fixedly connected to the side wall of the rotating shaft, and a torsion spring is elastically connected to the shaft center of the transmission gear.

[0014] Preferably, a pressure switch is fixedly connected to the end of the slide, one end of the pressure switch is connected to a power source, and the other end of the pressure switch is connected to a stepper motor via a wire.

[0015] Preferably, the snap-fit ​​groove is a wedge-shaped groove, the snap-fit ​​block is a wedge-shaped block, and there are multiple snap-fit ​​grooves, which are evenly distributed on the inner sidewall of the transverse groove.

[0016] Preferably, the length of the baffle is less than the length of the material rack, and the width is equal to the width of the material rack.

[0017] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0018] 1. In this invention, through the coordinated operation of the adjustment mechanism and the limiting mechanism, the device can automatically trigger the pressure crushing action to address the problem of large or high-hardness metal blocks easily getting stuck. This avoids material blockage caused by the crushing roller getting stuck, and at the same time, it prevents the drive motor from burning out due to overload operation, significantly reducing the equipment failure rate and extending the overall service life of the device. Furthermore, the limiting mechanism can stably limit the position of the adjustment structure, preventing it from sliding randomly due to material compression, ensuring the spacing accuracy of the crushing structure in conventional crushing operations, and ensuring that the crushing effect of different batches of scrap metal remains consistent.

[0019] 2. In this invention, the limiting mechanism and the material distribution mechanism work together to achieve automatic separation of qualified crushed materials and incompletely crushed materials, eliminating the need for manual subsequent screening, greatly reducing labor costs, and simplifying the overall process of scrap metal recycling. Attached Figure Description

[0020] Figure 1 This invention provides a frontal three-dimensional structural diagram of the overall equipment in an energy-saving waste metal recycling crushing device.

[0021] Figure 2 This invention provides a three-dimensional rear view of the overall structure of an energy-saving waste metal recycling crushing device.

[0022] Figure 3 A front sectional view of the crushing roller and adjusting mechanism in an energy-saving waste metal recycling crushing device is provided for this invention.

[0023] Figure 4 This invention presents a frontal perspective view of the adjustment mechanism in an energy-saving waste metal recycling crushing device.

[0024] Figure 5 This invention provides a front sectional view of the limiting mechanism in an energy-saving waste metal recycling crushing device.

[0025] Figure 6 This invention proposes an energy-saving crushing device for recycling scrap metal. Figure 5 A magnified structural diagram at point A;

[0026] Figure 7 This invention provides a front sectional view of the material distribution mechanism in an energy-saving waste metal recycling crushing device.

[0027] Figure 8 This invention proposes an energy-saving crushing device for recycling scrap metal. Figure 7 A magnified structural diagram at point B.

[0028] Legend: 100, Base; 101, Housing; 102, Drive Motor; 103, Feed Rack; 104, Crushing Roller; 105, Discharge Rack; 200, Adjustment Mechanism; 201, Base; 202, Slide Groove; 203, Slider; 204, Connecting Rod; 205, Rotating Shaft; 206, Moving Block; 207, Stepper Motor; 208, Lead Screw; 209, Limiting Rod; 210, Limiting Plate; 300, Limiting Mechanism; 301, Horizontal Groove; 302, Snap-fit ​​Groove; 303, Support Block; 304, Vertical Groove; 305, Snap-fit ​​Block; 306, Limiting Spring; 307, Support Rod; 308, Return Spring; 400, Material Distributing Mechanism; 401, Motor; 402, Transmission Gear; 403, Baffle; 404, Torsion Spring. Detailed Implementation

[0029] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0030] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0031] like Figures 1-2 As shown, an energy-saving waste metal recycling crushing device includes a base 100, a shell 101 fixedly connected to the upper surface of the base 100, a feeding rack 103 fixedly connected to the upper surface of the shell 101, a discharge rack 105 fixedly connected to the base 100 at the central axis of the shell 101, and a crushing roller 104 rotatably connected to the inner surface of the shell 101.

[0032] like Figure 2As shown, a drive motor 102 is provided on the surface of the base 100. The drive motor 102 drives the crushing roller 104 to rotate through the transmission chain. There are two crushing rollers 104, which are meshed with each other. The crushing roller 104 is located in the middle position between the feed rack 103 and the discharge rack 105. The material enters the crushing roller 104 from the feed rack 103, and after being crushed by the crushing roller 104, it is discharged through the discharge rack 105.

[0033] like Figure 2 As shown, the housing 101 has a feeding groove at the upper end of the crushing roller 104. The feeding rack 103 is fixedly connected inside the feeding groove. The width and length of the lower port of the feeding rack 103 are less than the length and total width of the two crushing rollers 104, so that the metal block to be crushed can be directly transferred to the crushing rollers 104 after passing through the feeding rack 103. The crushing rollers 104 on both sides squeeze and cut the metal block into smaller fragments.

[0034] It should be noted that during the cutting of metal sheets, due to the different widths of the metal blocks, the mutual squeezing force between the cutting blade and the surface of the metal block will vary with the thickness of the metal block. When the thickness of the metal block is greater than the cutting force critical value of the cutting device, it will be impossible to cut the metal block. The metal block will get stuck between the two crushing rollers 104, and the crushing rollers 104 will not be able to rotate, causing blockage of the feed rack 103 and damage to the motor. To address this situation, an adjustment mechanism 200 is provided on the side of the crushing rollers 104 to move to both sides when the cutting critical value is reached, and to collect the uncut metal blocks.

[0035] like Figures 3-4 As shown, the adjustment mechanism 200 includes a connecting rod 204. A rotating shaft 205 is fixedly connected to the upper end of the connecting rod 204. The shaft 205 is rotatably connected to the end of the crushing roller 104. A base 201 is fixedly connected to the upper surface of the base 100. A sliding groove 202 is provided inside the base 201. A slider 203 is slidably connected inside the base 201. The upper surface of the slider 203 is fixedly connected to the connecting rod 204. Moving blocks 206 are slidably connected to both ends of the sliding groove 202. Both ends of the crushing roller 104 are provided with connecting rods 204 to support them, so that the two crushing rollers 104 can move inside the housing 101.

[0036] like Figure 3 As shown, a stepper motor 207 is provided at the center of the moving block 206. A pressure switch is fixedly connected to the end of the slide 202. One end of the pressure switch is connected to the power supply, and the other end of the pressure switch is connected to the stepper motor 207 through a wire. When the moving block 206 moves to the bottom of the slide 202, it will press the pressure switch, and the stepper motor 207 will start to work.

[0037] like Figure 3As shown, the output shaft of the stepper motor 207 is fixedly connected to a lead screw 208. The slider 203 has a threaded groove inside, and the lead screw 208 meshes inside the threaded groove. The upper and lower ends of the surface of the moving block 206 are fixedly connected to limit rods 209, which are inserted inside the slider 203. The end of the limit rod 209 away from the moving block 206 is fixedly connected to a limit plate 210, which slides inside the slide groove 202. When the lead screw 208 rotates with the stepper motor 207, the slider 203 can slide on the surface of the limit rod 209 under the action of the lead screw 208. At this time, the slider 203 slides towards the center position of the slide groove 202.

[0038] Furthermore, by sliding the slider 203 towards the center of the groove 202, the slider 203 drives the crushing rollers 104 on both sides to move closer to each other through the connecting rod 204, increasing the clamping force between the crushing rollers 104, and crushing the metal block in the middle of the crushing rollers 104 with increased pressure.

[0039] It should be noted that, in order to prevent the adjustment mechanism 200 from sliding freely, the adjustment mechanism 200 is limited and fixed, and a limiting mechanism 300 is set at both ends of the slide groove 202;

[0040] like Figure 4 and Figure 5 As shown, a limiting mechanism 300 is disposed inside the movable block 206. A transverse groove 301 is formed inside the movable block 206, and a support block 303 is slidably connected inside the transverse groove 301. A snap-fit ​​groove 302 is formed on the surface of the transverse groove 301. Figure 6 As shown, a snap-fit ​​block 305 is slidably connected inside the support block 303. A support rod 307 is fixedly connected to the surface of the support block 303 away from the bottom of the transverse groove 301. A return spring 308 is wound around the surface of the support rod 307. The snap-fit ​​groove 302 is a wedge-shaped groove, and the snap-fit ​​block 305 is a wedge-shaped block. There are multiple snap-fit ​​grooves 302, which are evenly distributed on the inner side wall of the transverse groove 301. The snap-fit ​​block 305 snaps into the inside of the snap-fit ​​groove 302. Through the mutual snap-fit ​​between the snap-fit ​​block 305 and the snap-fit ​​groove 302, the moving block 206 needs to overcome the snap-fit ​​force between the snap-fit ​​block 305 and the snap-fit ​​groove 302 and the elastic force of the return spring 308 when sliding towards the bottom of the slide groove 202.

[0041] like Figure 6As shown, the side wall of the support block 303 has a vertical groove 304. The snap-fit ​​block 305 is slidably connected inside the vertical groove 304. A limit spring 306 is fixedly connected to one end of the snap-fit ​​block 305 near the bottom of the vertical groove 304. Under the action of the limit spring 306, the snap-fit ​​block 305 is pushed to snap into the inside of the snap-fit ​​groove 302. At this time, a strong frictional force is generated at the contact point between the snap-fit ​​block 305 and the side wall of the snap-fit ​​groove 302. When the moving block 206 slides towards the bottom of the sliding groove 202, it is necessary to overcome the frictional force between the snap-fit ​​block 305 and the snap-fit ​​groove 302 to push the snap-fit ​​block 305 into the inside of the vertical groove 304.

[0042] Furthermore, when the crushing roller 104 encounters a large metal block that it cannot crush and gets stuck in the middle of the two crushing rollers 104, causing a blockage, the crushing roller 104 will be subjected to a lateral pushing force generated by its own rotation. The crushing roller 104 drives the slider 203 to slide inside the slide groove 202 through the connecting rod 204. The slider 203, through meshing with the lead screw 208, drives the moving block 206 to overcome the friction between the jamming block 305 and the jamming groove 302 and the elastic force of the return spring 308, and slides to both sides of the slide groove 202. At this time, the moving block 206 presses the pressure switch, and the pressure switch starts the stepper motor 207 to work. The stepper motor 207 drives the slider 203 to slide along the surface of the limit rod 209 towards the center of the slide groove 202 through the lead screw 208. The slider 203 drives the crushing roller 104 through the connecting rod 204 to pressurize and crush the large metal block in the middle of the crushing roller 104 again. Some large metal blocks with unstable structures will be crushed during the pressurization process, achieving the effect of pressurized crushing.

[0043] It should be noted that, in order to distinguish between large metal blocks that are not crushed and large metal blocks that are not completely crushed from the crushed metal blocks, a material distribution mechanism 400 is set inside the discharge rack 105 to separate the large metal blocks that need to be crushed again, so as to facilitate secondary processing.

[0044] like Figure 7 As shown, the discharge rack 105 is a V-shaped hollow rack. The length and width of the upper port of the discharge rack 105 are both greater than the length and total width of the two crushing rollers 104. The lower port of the discharge rack 105 has two discharge ports. A material distribution mechanism 400 is set at the center of the two discharge ports. Two material holding boxes are set on the lower side of the two material distribution ports, so that the metal blocks after being crushed can be discharged from the discharge rack 105 and will not leak into the interior of the housing 101, causing internal blockage.

[0045] like Figure 7 and Figure 8As shown, the material distribution mechanism 400 includes a motor 401, which is rotatably connected inside the discharge rack 105. A drive gear is fixedly connected to the output end of the motor 401. A transmission gear 402 meshes with the side of the drive gear. A rotating shaft is fixedly connected to the side wall of the transmission gear 402. A baffle 403 is fixedly connected to the side wall of the rotating shaft. The length of the baffle 403 is less than the length of the discharge rack 105, and the width is equal to the width of the discharge rack 105. A pressure switch is connected to the motor 401 via a wire. When the pressure switch is pressed, the metal block entering the middle of the crushing roller 104 is an uncrushed metal block with high hardness or large volume. The motor 401 works, driving the transmission gear 402 to rotate through the drive gear. The transmission gear 402 drives the baffle 403 to rotate to the other side. At this time, the metal block falling into the discharge rack 105 will be discharged from the discharge port on the other side, thus separating it from the crushed metal block.

[0046] like Figure 8 As shown, a torsion spring 404 is elastically connected to the shaft of the transmission gear 402. When the pressure switch is not pressed, the motor 401 loses power, and the transmission gear 402 returns to its original state under the action of the torsion spring 404. At this time, the baffle 403 also returns to its original state, and the crushed metal block can fall into the corresponding container.

[0047] Working principle: Scrap metal material is fed into the feed rack 103. After the drive motor 102 starts, it drives the two meshing crushing rollers 104 inside the housing 101 to rotate through the transmission chain. The lower end of the feed rack 103 is adapted to the spacing and size of the crushing rollers 104. The material falls directly between the two crushing rollers 104 and is squeezed and cut into small metal fragments. The material after preliminary crushing falls into the discharge rack 105 on the base 100 and enters the subsequent discharge process.

[0048] When there are metal blocks in the material that are too large or too hard, they cannot be directly cut by the crushing roller 104 and will get stuck between the two crushing rollers 104. At this time, the crushing roller 104 is subjected to a lateral pushing force due to rotation. This force is transmitted to the connecting rod 204 through the rotating shaft 205, which in turn drives the slider 203 to slide inside the groove 202 of the base 201. The slider 203, through its meshing with the lead screw 208, drives the moving block 206 to overcome the clamping force of the limiting mechanism 300 and the elastic force of the return spring 308, and slides to both sides of the groove 202. Finally, the pressure switch at the end of the groove 202 is pressed, triggering the subsequent pressure crushing and material distribution actions.

[0049] After the pressure switch is closed, the stepper motor 207 connected to the power supply starts, and its output shaft drives the lead screw 208 to rotate. Under the axial limiting action of the limiting rod 209, the slider 203 slides along the lead screw 208 towards the center position of the slide groove 202. At the same time, the limiting plate 210 prevents the slider 203 from disengaging from the limiting rod 209. The sliding of the slider 203, through the connecting rod 204 and the rotating shaft 205, drives the two crushing rollers 104 to move closer to each other, greatly increasing the clamping force between the crushing rollers 104, and pressurizing and crushing the large or high-hardness metal blocks that are stuck together. Some structurally unstable metal blocks will be crushed into qualified fragments under pressure.

[0050] The limiting mechanism 300 provides position limit for the moving block 206 throughout the process, preventing the adjusting mechanism 200 from sliding arbitrarily and causing the spacing of the crushing roller 104 to shift. Under the elastic force of the limiting spring 306, the locking block 305 is always locked in the wedge-shaped locking groove 302 on the side wall of the transverse groove 301, forming a locking force. When the moving block 206 slides under the pushing force, the locking block 305 overcomes the elastic force of the limiting spring 306 and retracts into the vertical groove 304, disengaging from the current locking groove 302 and completing the position adjustment. After the pressure is released, the elastic force of the reset spring 308 drives the support block 303 to reset, and the locking block 305 locks into the corresponding locking groove 302 again, realizing the limiting again.

[0051] When the pressure switch is closed, the motor 401, which is electrically connected to the switch, starts synchronously. The drive gear at its output end meshes with the transmission gear 402 and rotates, causing the rotating shaft on the transmission gear 402 and the baffle 403 to deflect. The torsion spring 404 is torsionally generated to generate elastic restoring force. The discharge rack 105 is a V-shaped hollow rack. Its upper port is adapted to the size of the crushing roller 104 to ensure that all the material falls in. The two discharge ports at the lower port correspond to two holding boxes. Large metal blocks that are not crushed after being pressurized fall with the material to the discharge rack 105. Under the guidance of the deflecting baffle 403, they are discharged from one of the discharge ports to the corresponding holding box for subsequent secondary crushing processing.

[0052] When the large metal block that was clamped is crushed or removed under pressure, the lateral pushing force on the crushing roller 104 disappears, the moving block 206 is reset under the action of the reset spring 308 and other structures, the pressure switch at the end of the slide 202 is disconnected, the stepper motor 207 stops working, the crushing roller 104 returns to its initial spacing and continues the normal crushing operation, at the same time the motor 401 is de-energized, the transmission gear 402 rotates under the action of the elastic reset force of the torsion spring 404, driving the baffle 403 to return to its initial position, and the qualified metal fragments after normal crushing will be discharged from another discharge port to the corresponding collection box under the guidance of the baffle 403, completing the collection of qualified materials.

[0053] This device only triggers the stepper motor 207 and motor 401 to work when a jamming failure occurs. During normal crushing operations, the drive motor 102 provides power, which greatly reduces power consumption and achieves energy saving. At the same time, the spacing adjustment mechanism 200 prevents the metal block from jamming and causing the crushing roller 104 to jam, and prevents the drive motor 102 from being damaged due to overload, thus protecting the device.

[0054] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. An energy-saving crushing device for recycling scrap metal, characterized in that: Includes a base (100), a housing (101) is fixedly connected to the upper surface of the base (100), a feed rack (103) is fixedly connected to the upper surface of the housing (101), a discharge rack (105) is fixedly connected to the base (100) at the central axis of the housing (101), and a crushing roller (104) is rotatably connected to the inner surface of the housing (101). An adjusting mechanism (200) includes a connecting rod (204), a rotating shaft (205) is fixedly connected to the upper end of the connecting rod (204), the shaft center of the rotating shaft (205) is rotatably connected to the end of the crushing roller (104), a base (201) is fixedly connected to the upper surface of the base (100), a sliding groove (202) is provided inside the base (201), a slider (203) is slidably connected inside the base (201), the upper surface of the slider (203) is fixedly connected to the connecting rod (204), and moving blocks (206) are slidably connected to both ends of the sliding groove (202). A limiting mechanism (300) is provided inside a moving block (206). A transverse groove (301) is provided inside the moving block (206). A support block (303) is slidably connected inside the transverse groove (301). A snap-fit ​​groove (302) is provided on the surface of the transverse groove (301). A snap-fit ​​block (305) is slidably connected inside the support block (303). The snap-fit ​​block (305) snaps into the inside of the snap-fit ​​groove (302).

2. The energy-saving waste metal recycling crushing device according to claim 1, characterized in that: The base (100) is provided with a drive motor (102) on its surface. The drive motor (102) drives the crushing roller (104) to rotate through the transmission chain. There are two crushing rollers (104) that mesh with each other. The crushing roller (104) is located in the middle position between the feed rack (103) and the discharge rack (105).

3. The energy-saving waste metal recycling crushing device according to claim 1, characterized in that: The discharge rack (105) is a V-shaped hollow rack. The length and width of the upper end of the discharge rack (105) are greater than the length and total width of the two crushing rollers (104). The lower end of the discharge rack (105) has two discharge ports. A material distribution mechanism (400) is set at the center of the two discharge ports. Two material holding boxes are set on the lower side of the two discharge ports.

4. The energy-saving waste metal recycling crushing device according to claim 1, characterized in that: The housing (101) has a feeding groove at the upper end of the crushing roller (104), and the feeding rack (103) is fixedly connected inside the feeding groove. The width and length of the lower port of the feeding rack (103) are less than the length and total width of the two crushing rollers (104).

5. The energy-saving crushing device for recycling scrap metal according to claim 1, characterized in that: A stepper motor (207) is provided at the center of the moving block (206). The output shaft of the stepper motor (207) is fixedly connected to a lead screw (208). A threaded groove is provided inside the slider (203). The lead screw (208) is engaged inside the threaded groove. Limiting rods (209) are fixedly connected to the upper and lower ends of the surface of the moving block (206). The limiting rods (209) are inserted inside the slider (203). A limiting plate (210) is fixedly connected to the end of the limiting rod (209) away from the moving block (206).

6. The energy-saving waste metal recycling crushing device according to claim 1, characterized in that: The side wall of the support block (303) is provided with a vertical groove (304). The snap-fit ​​block (305) is slidably connected inside the vertical groove (304). A limit spring (306) is fixedly connected to one end of the snap-fit ​​block (305) near the bottom of the vertical groove (304). A support rod (307) is fixedly connected to the surface of the support block (303) away from the bottom of the horizontal groove (301). A return spring (308) is wound around the surface of the support rod (307).

7. The energy-saving crushing device for recycling scrap metal according to claim 3, characterized in that: The material distribution mechanism (400) includes a motor (401), which is rotatably connected inside the discharge rack (105). The output end of the motor (401) is fixedly connected to a drive gear, and a transmission gear (402) meshes with the side of the drive gear. A rotating shaft is fixedly connected to the side wall of the transmission gear (402), and a baffle (403) is fixedly connected to the side wall of the rotating shaft. A torsion spring (404) is elastically connected to the shaft center of the transmission gear (402).

8. The energy-saving waste metal recycling crushing device according to claim 5, characterized in that: A pressure switch is fixedly connected to the end of the slide (202). One end of the pressure switch is connected to the power supply, and the other end of the pressure switch is connected to the stepper motor (207) through a wire.

9. The energy-saving crushing device for recycling scrap metal according to claim 6, characterized in that: The snap-fit ​​groove (302) is a wedge-shaped groove, the snap-fit ​​block (305) is a wedge-shaped block, and there are multiple snap-fit ​​grooves (302) evenly arranged on the inner sidewall of the transverse groove (301).

10. The energy-saving crushing device for recycling scrap metal according to claim 7, characterized in that: The length of the baffle (403) is less than the length of the feed rack (105), and the width is equal to the width of the feed rack (105).

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