Waste recycling equipment in concrete production

Abstract

The invention discloses waste recycling and reusing equipment in concrete production, and relates to the technical field of concrete waste smashing, the waste recycling and reusing equipment comprises a supporting frame, a servo motor, a first smashing mechanism, a feeding mechanism, a second smashing mechanism and a magnetic separation mechanism, the servo motor is installed on the supporting frame, and the first smashing mechanism is installed at one end of the supporting frame; a feeding hopper is installed on the top of the feeding mechanism, the second smashing mechanism is used for preliminarily smashing large waste, and the magnetic separation mechanism is installed on the feeding mechanism. Through the arrangement mode that the first smashing mechanism, the feeding mechanism, the second smashing mechanism and the magnetic separation mechanism are matched, large concrete waste can enter the second smashing mechanism to be preliminarily smashed and then enter the first smashing mechanism together with screened small waste to be smashed again, the smashing effect is improved, and through the magnetic separation mechanism, the large concrete waste can be smashed again. And magnetic attraction of metal can be hidden conveniently after large waste materials are smashed, and recycling of the metal in the large waste materials is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of concrete waste crushing, and in particular to waste recycling equipment in concrete production. Background Art

[0002] With the acceleration of urbanization, the amount of construction waste is increasing, among which waste concrete accounts for a large proportion. In order to achieve the effective reuse of resources, waste concrete recycling equipment has come into being and has become an important part of the environmental protection field. Waste concrete recycling equipment converts waste concrete into reusable aggregates through crushing, magnetic separation and other processes, effectively reducing the pollution of construction waste to the environment.

[0003] The existing concrete waste recycling and reuse equipment is composed of a motor, a synchronous component, a crushing frame and a crushing knife group. The crushing knife group can crush the concrete waste, but the sizes of the existing concrete waste are uneven. When the crushing knife group crushes the waste, small pieces of waste and large pieces of waste are mixed together for crushing, and the large pieces of waste cannot be crushed to the same size as the small pieces of waste, which affects the crushing effect of the waste. Summary of the invention

[0004] The purpose of the present invention is to provide a waste recycling and reuse device in concrete production to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a waste recycling and reuse device in concrete production, comprising:

[0006] Support frame;

[0007] A servo motor, wherein the servo motor is mounted on a support frame;

[0008] A first crushing mechanism, wherein the first crushing mechanism is installed at one end of the support frame;

[0009] Also includes:

[0010] A feeding mechanism, a feeding hopper is installed on the top of the feeding mechanism, the feeding mechanism is installed on the top of the first crushing mechanism, and the feeding mechanism is used for screening large waste and small waste;

[0011] A second crushing mechanism, the second crushing mechanism is installed at one end of the feeding mechanism close to the first crushing mechanism, and the second crushing mechanism is used for preliminary crushing of large waste;

[0012] The magnetic separation mechanism is installed on the feeding mechanism and is used for adsorbing the hidden metal in the large scrap and discharging the crushed material.

[0013] Preferably, the first crushing mechanism comprises:

[0014] A crushing box, wherein the crushing box is fixed to one end of the supporting frame through a bracket;

[0015] A discharge door, the discharge door is rotated at the bottom of the crushing box through a hinge, and the discharge door is clamped to the top of the crushing box through a buckle lock;

[0016] A rotating roller, the rotating roller is installed in the middle of the crushing box;

[0017] a first blade, the first blade being fixed to the outer wall of the rotating roller;

[0018] A first synchronous component is installed between the rotating roller and the output shaft end of the servo motor.

[0019] Preferably, the feeding mechanism comprises:

[0020] A protection frame, the protection frame is installed on the top of the crushing box;

[0021] A screening component, which is installed on the top of the protective frame and is used for screening the waste material by size;

[0022] A transmission assembly, wherein the transmission assembly is mounted on one side of the screening assembly;

[0023] A conveyor belt, the conveyor belt being arranged below the screening assembly;

[0024] A transmission shaft is installed at the end of the transmission belt.

[0025] Preferably, the feed hopper is fixedly inserted into one end of the protection frame, the second crushing mechanism is installed at one end of the protection frame, and the bottom of one end of the protection frame is fixedly inserted into and connected with the feed hopper.

[0026] Preferably, the screening component comprises:

[0027] Transmission shafts, the transmission shafts are respectively rotatably inserted into the ends of the protection frame, the transmission assembly is installed between one of the transmission shafts and one of the transmission shafts, and a driving motor is installed at one end of one of the transmission shafts;

[0028] A screening belt, the screening belt being installed between two transmission shafts in a downwardly inclined structure;

[0029] The screening hole is opened in the middle of the screening belt.

[0030] Preferably, the second pulverizing mechanism comprises:

[0031] A rotating rod, the rotating rod being rotatably inserted into one end of the protective frame;

[0032] a second blade, the second blade being fixed to an outer wall of the rotating rod;

[0033] The second synchronization component is installed between the rotating rod and the output shaft of the servo motor, and the second synchronization component is arranged outside the protection frame.

[0034] Preferably, the magnetic separation mechanism comprises:

[0035] A discharge hole, the discharge hole being opened on one side of the protection frame;

[0036] A magnetic attraction component, the magnetic attraction component is slidably and interlacedly connected with one end of the protective frame;

[0037] An electric hydraulic cylinder, wherein the electric hydraulic cylinder is mounted on the outer wall of the protection frame through a support plate;

[0038] A sealing plate assembly, the sealing plate assembly is installed on the protection frame, and the sealing plate assembly is used to seal the inner cavity of the discharge hole;

[0039] A support plate, the support plate is arranged at the bottom of the magnetic attraction component, and the support plate is fixed to the inner wall of the protection frame;

[0040] A connecting plate is clamped on the top of the magnetic attraction component and fixed to the inner wall of the protective frame.

[0041] Preferably, the magnetic attraction component includes:

[0042] A blanking plate, which is disposed below the second crushing mechanism and is slidably and interlacedly connected with the inner cavity of the discharge hole;

[0043] A magnetic attraction plate, the magnetic attraction plate is fixed to the upper surface of the blanking plate;

[0044] A fixed block is fixedly connected to the telescopic end of the electric hydraulic cylinder.

[0045] Preferably, the bottom of the blanking plate is inserted and clamped with the top of the support plate, and the top of the blanking plate is inserted and clamped with one end of the connecting plate.

[0046] Preferably, the sealing plate assembly comprises:

[0047] A fixing bar, wherein the fixing bar is fixed to the outer wall of the protection frame;

[0048] A blocking plate, which slides on the top of the unloading plate and is used for scraping metal objects and blocking the inner cavity of the discharge hole;

[0049] A compression spring, wherein the compression spring is fixed between the fixing strip and the blocking plate;

[0050] A positioning rod is sleeved in the inner cavity of the compression spring, the positioning rod is fixedly connected to the top of the blocking plate, and the positioning rod is slidably and interlacedly connected to the bottom of the fixing strip.

[0051] Technical effects and advantages of the present invention:

[0052] (1) The present invention uses a first crushing mechanism, a feeding mechanism, a second crushing mechanism and a magnetic separation mechanism in a coordinated arrangement, and utilizes the magnetic separation mechanism to facilitate the size screening of waste materials, so that large pieces of concrete waste can enter the second crushing mechanism for preliminary crushing and then enter the first crushing mechanism together with the screened small waste for re-crushing, thereby improving the crushing uniformity of concrete waste and the crushing effect. In addition, the magnetic separation mechanism facilitates the magnetic attraction of hidden metals after the large pieces of waste are crushed, thereby facilitating the recycling of metals in the large pieces of waste.

[0053] (2) The present invention is provided with a magnetic separation mechanism, which includes a discharge hole, a magnetic suction component, an electric hydraulic cylinder and a sealing plate component, so that the magnetic suction component can discharge the crushed materials after the large waste is crushed, and at the same time, the metal in the large waste is magnetically sucked, thereby reducing the hidden metal from entering the first crushing mechanism, and the magnetic suction component slides in the inner cavity of the discharge hole, so that the metal can be conveniently moved out of the inner cavity of the feeding mechanism, and at the same time, the sealing plate component is used to scrape the metal, and when the metal does not move out of the inner cavity of the feeding mechanism, the sealing plate component can block the discharge hole, thereby reducing the phenomenon of the crushed materials being discharged from the inner cavity of the discharge hole;

[0054] (3) The present invention facilitates the separate feeding of waste materials after metal removal and large waste materials through the coordinated arrangement of the feed hopper and the loading mechanism, and the blade arrangement of the first crushing mechanism enables the crushed materials to be crushed and mixed at the same time, thereby improving the versatility of the waste recovery and reuse equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0056] Figure 2 It is a schematic diagram of the internal structure of the crushing box of the present invention.

[0057] Figure 3 It is a schematic diagram of the overall front structure of the present invention.

[0058] Figure 4 It is a schematic diagram of the local structure of the screening belt of the present invention.

[0059] Figure 5 It is a schematic diagram of the structure of the crushing box in the front section of the present invention.

[0060] Figure 6 For the present invention Figure 1 Schematic diagram of the local enlarged structure at point A in the middle.

[0061] Figure 7 It is a schematic diagram of the side structure of the blanking plate of the present invention.

[0062] Figure 8 It is a schematic diagram of the overall structure of the support plate of the present invention.

[0063] In the figure: 1. support frame; 2. servo motor; 3. first crushing mechanism; 31. crushing box; 32. discharge door; 33. rotating roller; 34. first blade; 35. first synchronous component; 4. feed hopper; 5. feeding mechanism; 51. protection frame; 52. screening component; 521. transmission shaft; 522. screening belt; 523. screening hole; 53. transmission component; 54. transmission belt; 55. transmission shaft; 6. second crushing mechanism; 61. rotating rod; 62. second blade; 63. second synchronous component; 7. magnetic separation mechanism; 71. discharge hole; 72. magnetic suction component; 721. discharge plate; 722. magnetic suction plate; 723. fixed block; 73. electric hydraulic cylinder; 74. sealing plate component; 741. fixing strip; 742. sealing plate; 743. compression spring; 744. positioning rod; 75. support plate; 76. connecting plate; 8. feeding hopper. DETAILED DESCRIPTION

[0064] 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.

[0065] The present invention provides Figure 1-8The waste recycling and reuse equipment in concrete production shown in the figure comprises: a support frame 1, a servo motor 2 and a first crushing mechanism 3, the servo motor 2 is installed on the support frame 1, the first crushing mechanism 3 is installed at one end of the support frame 1, the first crushing mechanism 3 comprises: a crushing box 31, a discharge door 32, a rotating roller 33, a first blade 34 and a first synchronization component 35, the crushing box 31 is fixed to one end of the support frame 1 through a bracket, the discharge door 32 is rotated at the bottom of the crushing box 31 through a hinge, and the discharge door 32 is clamped to the top of the crushing box 31 through a buckle lock, and the buckle lock is opened to facilitate the discharge door 32 to rotate on one side of the crushing box 31, so as to facilitate the discharge of the crushed material in the inner cavity of the crushing box 31, and the rotating roller 33 is installed in the middle of the crushing box 31, and the two ends of the rotating roller 33 are respectively The first blade 34 is rotatably connected with the middle part of the crushing box 31 through a bearing, and the first blade 34 is fixed to the outer wall of the rotating roller 33. The first blade 34 is a rectangular plate structure, and multiple first blades 34 are fixed to the outer wall of the rotating roller 33 in an annular array, so that the multiple first blades 34 can crush the waste in the inner cavity of the crushing box 31, and can also mix the waste. The first synchronous component 35 is installed between the rotating roller 33 and the output shaft end of the servo motor 2. The first synchronous component 35 includes two synchronous wheels and a synchronous belt. The synchronous belt is installed on the two synchronous wheels, and the two synchronous wheels are respectively installed at one end of the rotating roller 33 and the output shaft end of the servo motor 2, so that the servo motor 2 can drive the rotating roller 33 to rotate stably, so that the multiple first blades 34 can rotate in an annular manner in the inner cavity of the crushing box 31;

[0066] It also includes: a feeding mechanism 5, a second crushing mechanism 6 and a magnetic separation mechanism 7. A feeding hopper 4 is installed on the top of the feeding mechanism 5. The feeding mechanism 5 is installed on the top of the first crushing mechanism 3. The feeding mechanism 5 is used for screening large waste and small waste. The second crushing mechanism 6 is installed at one end of the feeding mechanism 5 close to the first crushing mechanism 3. The second crushing mechanism 6 is used for preliminary crushing of large waste. The magnetic separation mechanism 7 is installed on the feeding mechanism 5. The magnetic separation mechanism 7 is used for adsorbing hidden metals in large waste and discharging crushed materials.

[0067] Furthermore, the feeding mechanism 5 includes: a protective frame 51, a screening component 52, a transmission component 53, a conveyor belt 54 and a transmission shaft 55. The protective frame 51 is installed on the top of the crushing box 31, and the protective frame 51 is fixedly connected to the top of the crushing box 31 by screws. The feed hopper 4 is fixedly inserted into one end of the protective frame 51, and the inner cavity of the feed hopper 4 is communicated with the inner cavity of one end of the protective frame 51, so that the waste fed into the feed hopper 4 can enter the inner cavity of the crushing box 31 through the protective frame 51. The bottom of one end of the protective frame 51 is fixedly inserted with a feeding hopper 8, and the bottom of the feeding hopper 8 is communicated with the inner cavity of the protective frame 51, so that the waste fed into the feed hopper 4 can enter the inner cavity of the crushing box 31 through the protective frame 51. When liquid or powder is added to mix the waste in the inner cavity of the crushing box 31, the liquid feeding is convenient. The screening component 52 is installed on the top of the protective frame 51. The screening component 52 is used to screen the waste size. The transmission component 53 is installed on one side of the screening component 52. The conveyor belt 54 is set below the screening component 52. The transmission shaft 55 is installed at the end of the conveyor belt 54, and the two transmission shafts 55 are rotatably connected with the bottom ends of the protective frame 51 through bearings. The conveyor belt 54 is an existing mature conveyor belt component, which is convenient for conveying the broken waste dropped by the screening component 52 to one end of the inner cavity of the protective frame 51 for unloading;

[0068] The screening component 52 includes: a transmission shaft 521, a screening belt 522 and a screening hole 523. The transmission shafts 521 are respectively rotated and inserted into the ends of the protective frame 51. The two transmission shafts 521 are arranged in different horizontal structures. The transmission component 53 is installed between one of the transmission shafts 521 and one of the transmission shafts 55, and a driving motor is installed at one end of one of the transmission shafts 521. The driving motor is an existing stepping motor. The driving motor is electrically connected to an external power supply through an external switch. Through the drive of the driving motor, one of the transmission shafts 521 can be rotated. The transmission component 53 includes a chain and two sprockets. The chain is installed between the two sprockets. The two sprockets are respectively fixed to one end of one of the transmission shafts 521 and one end of one of the transmission shafts 55. It is convenient to drive one of the transmission shafts 55 to rotate, so that the two transmission shafts 55 and one of the transmission shafts 521 rotate synchronously. The screening belt 522 is installed between the two transmission shafts 521 in a downward inclined structure. The screening belt 522 is made of conveyor belt material. The friction between the screening belt 522 and the transmission shaft 521 is relatively large, which is convenient for the two transmission shafts 521 to rotate synchronously. The screening hole 523 is opened in the middle of the screening belt 522, and multiple screening holes 523 are equidistantly opened in the middle of the screening belt 522, so that the waste materials put into the screening belt 522 can be screened, so that large pieces of waste can follow the screening belt 522 into one end of the protective frame 51 for preliminary crushing, and small pieces of waste can enter the inner cavity of the transmission belt 54 and enter the inner cavity of the crushing box 31 through the protective frame 51.

[0069] Furthermore, the second crushing mechanism 6 is installed at one end of the protective frame 51, and the second crushing mechanism 6 includes: a rotating rod 61, a second blade 62 and a second synchronous component 63. The rotating rod 61 rotates and is inserted into one end of the protective frame 51. The second blade 62 is fixed to the outer wall of the rotating rod 61. Multiple second blades 62 are fixed to the outer wall of the rotating rod 61 in a circular array. The second synchronous component 63 is installed between the rotating rod 61 and the output shaft of the servo motor 2. The second synchronous component 63 is arranged on the outside of the protective frame 51. The second synchronous component 63 includes two synchronous wheels and a synchronous belt. The synchronous belt is installed between the two synchronous wheels. The two synchronous wheels are respectively installed at one end of the rotating rod 61 and the output shaft end of the servo motor 2, so that the servo motor 2 can simultaneously drive the rotating rod 61 and the rotating roller 33 to rotate synchronously, so that the second blade 62 installed on the rotating rod 61 can preliminarily crush the large pieces of waste dropped from the screening belt 522, and try to keep them consistent with the size of small pieces of waste.

[0070] Specifically, the magnetic separation mechanism 7 includes: a discharge hole 71, a magnetic suction component 72, an electric hydraulic cylinder 73, a sealing plate component 74, a support plate 75 and a connecting plate 76. The discharge hole 71 is opened on one side of the protective frame 51, the magnetic suction component 72 is slidably and interlacedly connected with one end of the protective frame 51, the electric hydraulic cylinder 73 is installed on the outer wall of the protective frame 51 through a support plate, the sealing plate component 74 is installed on the protective frame 51, and the sealing plate component 74 is used to block the inner cavity of the discharge hole 71. The support plate 75 is arranged at the bottom of the magnetic suction component 72, the support plate 75 is fixed to the inner wall of the protective frame 51, the connecting plate 76 is clamped on the top of the magnetic suction component 72, and the connecting plate 76 is fixed to the inner wall of the protective frame 51. The connecting plate 76 and the support plate 75 are respectively used to stabilize the position of the magnetic suction component 72 in the inner cavity of the protective frame 51;

[0071] The magnetic suction assembly 72 includes: a blanking plate 721, a magnetic suction plate 722 and a fixed block 723. The blanking plate 721 is arranged below the second crushing mechanism 6. The blanking plate 721 is slidably connected with the inner cavity of the discharge hole 71. The blanking plate 721 is a slanted bending structure. The magnetic suction plate 722 is fixed to the upper surface of the blanking plate 721. The magnetic suction plate 722 can absorb metal from the crushed large waste to prevent the metal contained in the large waste, such as nails and screws, from being absorbed, and prevent hidden in the large waste. The metal in the material enters the inner cavity of the first pulverizing mechanism 3 for pulverization, thereby improving the stability of waste recycling. The fixed block 723 is fixedly connected to the telescopic end of the electric hydraulic cylinder 73. The electric hydraulic cylinder 73 is driven to facilitate pushing the blanking plate 721 so that the magnetic plate 722 adsorbed with metal can slide out of the inner cavity of the protective frame 51 through the discharge hole 71. The bottom of the blanking plate 721 is inserted and clamped with the top of the support plate 75, and the top of the blanking plate 721 is inserted and clamped with one end of the connecting plate 76.

[0072] The closure plate assembly 74 includes: a fixing strip 741, a blocking plate 742, a compression spring 743 and a positioning rod 744. The fixing strip 741 is fixed to the outer wall of the protective frame 51, and the blocking plate 742 slides on the top of the blanking plate 721. A handle is installed on the blocking plate 742 to facilitate pushing the blocking plate 742 so that the blanking plate 721 can slide out of the inner cavity of the protective frame 51. The blocking plate 742 is used for scraping metal objects and blocking the inner cavity of the discharge hole 71. The compression spring 743 is fixed between the fixing strip 741 and the blocking plate 742. The positioning rod 744 is sleeved on the inner cavity of the compression spring 743. The positioning rod 744 and The top of the blocking plate 742 is fixedly connected, and the positioning rod 744 is slidably and interlacedly connected with the bottom of the fixing bar 741. After the magnetic plate 722 adsorbed with metal slides out of the inner cavity of the protective frame 51, the blocking plate 742 is released, and the bottom of the blocking plate 742 fits with the magnetic plate 722. The electric hydraulic cylinder 73 is started to retract the electric hydraulic cylinder 73, so that the unloading plate 721 can slide into the inner cavity of the protective frame 51, so that the unloading plate 721 can carry the waste for stable unloading, so that the metal is scraped out of the upper surface of the magnetic plate 722, and at the same time, the blocking plate 742 blocks the inner cavity of the discharge hole 71 above the unloading plate 721.

[0073] Working principle of the present invention:

[0074] When in use, the driving motor is driven by the connection between the first synchronous component 35, the second synchronous component 63 and the transmission component 53, and the waste is poured into the top of the screening belt 522, so that the waste can be screened by size, so that the large pieces of concrete waste can enter the second crushing mechanism 6 and be initially crushed by the second blade 62, and then follow the small waste that falls on the conveyor belt 54 after screening into the inner cavity of the crushing box 31 on the first crushing mechanism 3 for re-crushing, thereby improving the uniformity of crushing of concrete waste and the crushing effect, and facilitating the separate feeding of the waste after metal removal and the large pieces of waste, and passing The blade setting of the first crushing mechanism 3 can crush the crushed material and mix the crushed material at the same time. At the same time, the large pieces of waste are crushed by the second crushing mechanism 6 and the crushed pieces fall onto the unloading plate 721 for unloading. The hidden metal in the large pieces of waste is magnetically attracted by the magnetic plate 722, which reduces the hidden metal from entering the first crushing mechanism 3. The magnetic attraction component 72 slides in the inner cavity of the discharge hole 71, so that the metal can be easily moved out of the inner cavity of the protective frame 51. At the same time, the metal is scraped by the sealing plate 742 on the sealing plate assembly 74, so that the adsorbed metal can be easily moved out of the inner cavity of the protective frame 51.

[0075] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Equipment for recycling and reusing waste materials in concrete production, including: Support frame (1); A servo motor (2), wherein the servo motor (2) is mounted on the support frame (1); A first crushing mechanism (3), wherein the first crushing mechanism (3) is mounted on one end of the support frame (1); It is characterized by further comprising: A feeding mechanism (5), a feeding hopper (4) is installed on the top of the feeding mechanism (5), the feeding mechanism (5) is installed on the top of the first crushing mechanism (3), and the feeding mechanism (5) is used for screening large waste materials and small waste materials; A second crushing mechanism (6), the second crushing mechanism (6) is installed at one end of the feeding mechanism (5) close to the first crushing mechanism (3), and the second crushing mechanism (6) is used for preliminary crushing of large waste materials; A magnetic separation mechanism (7) is installed on the feeding mechanism (5), and is used for adsorbing hidden metals in large scraps and discharging crushed materials.

2. The waste recycling and reuse equipment in concrete production according to claim 1 is characterized in that: The first crushing mechanism (3) comprises: A crushing box (31), wherein the crushing box (31) is fixed to one end of the support frame (1) via a bracket; A discharge door (32), the discharge door (32) is rotated at the bottom of the crushing box (31) through a hinge, and the discharge door (32) is clamped to the top of the crushing box (31) through a buckle lock; A rotating roller (33), wherein the rotating roller (33) is installed in the middle of the crushing box (31); A first blade (34), wherein the first blade (34) is fixed to the outer wall of the rotating roller (33); A first synchronous component (35), the first synchronous component (35) is installed between the rotating roller (33) and the output shaft end of the servo motor (2).

3. The waste recycling and reuse equipment in concrete production according to claim 2 is characterized in that: The feeding mechanism (5) comprises: A protection frame (51), wherein the protection frame (51) is installed on the top of the crushing box (31); A screening component (52), the screening component (52) being installed on the top of the protection frame (51), and the screening component (52) being used for screening waste materials according to their size; A transmission assembly (53), wherein the transmission assembly (53) is mounted on one side of the screening assembly (52); A conveyor belt (54), wherein the conveyor belt (54) is disposed below the screening component (52); A transmission shaft (55) is installed at the end of the transmission belt (54).

4. The waste recycling and reuse equipment in concrete production according to claim 3 is characterized in that: The feed hopper (4) is fixedly inserted into one end of the protection frame (51), the second crushing mechanism (6) is installed at one end of the protection frame (51), and the bottom of one end of the protection frame (51) is fixedly inserted into and connected with a feed hopper (8).

5. The waste recycling and reuse equipment in concrete production according to claim 3 is characterized in that: The screening component (52) comprises: Transmission shafts (521), the transmission shafts (521) are respectively rotatably inserted into the ends of the protection frame (51), the transmission assembly (53) is installed between one of the transmission shafts (521) and one of the transmission shafts (55), and a driving motor is installed at one end of one of the transmission shafts (521); A screening belt (522), wherein the screening belt (522) is installed between the two transmission shafts (521) in a downwardly inclined structure; A screening hole (523), wherein the screening hole (523) is opened in the middle of the screening belt (522).

6. The waste recycling and reuse equipment in concrete production according to claim 4, characterized in that: The second pulverizing mechanism (6) comprises: A rotating rod (61), wherein the rotating rod (61) is rotatably inserted into one end of the protective frame (51); A second blade (62), wherein the second blade (62) is fixed to the outer wall of the rotating rod (61); A second synchronizing component (63), the second synchronizing component (63) is installed between the rotating rod (61) and the output shaft of the servo motor (2), and the second synchronizing component (63) is arranged on the outside of the protective frame (51).

7. The waste recycling and reuse equipment in concrete production according to claim 3 is characterized in that: The magnetic separation mechanism (7) comprises: A discharge hole (71), wherein the discharge hole (71) is opened on one side of the protection frame (51); A magnetic attraction component (72), wherein the magnetic attraction component (72) is slidably and interlacedly connected to one end of the protection frame (51); An electric hydraulic cylinder (73), wherein the electric hydraulic cylinder (73) is mounted on the outer wall of the protection frame (51) via a support plate; A sealing plate assembly (74), the sealing plate assembly (74) being mounted on the protection frame (51), and the sealing plate assembly (74) being used to seal the inner cavity of the discharge hole (71); A support plate (75), wherein the support plate (75) is arranged at the bottom of the magnetic attraction component (72), and the support plate (75) is fixed to the inner wall of the protection frame (51); A connecting plate (76), wherein the connecting plate (76) is snap-connected to the top of the magnetic attraction component (72), and the connecting plate (76) is fixed to the inner wall of the protection frame (51).

8. The waste recycling and reuse equipment in concrete production according to claim 7, characterized in that: The magnetic attraction component (72) comprises: A material discharge plate (721), the material discharge plate (721) being arranged below the second crushing mechanism (6), the material discharge plate (721) being slidably interpenetratingly connected with the inner cavity of the material discharge hole (71); A magnetic attraction plate (722), wherein the magnetic attraction plate (722) is fixed to the upper surface of the blanking plate (721); A fixed block (723), wherein the fixed block (723) is fixedly connected to the telescopic end of the electric hydraulic cylinder (73).

9. The waste recycling and reuse equipment in concrete production according to claim 8, characterized in that: The bottom of the blanking plate (721) is inserted and clamped with the top of the support plate (75), and the top of the blanking plate (721) is inserted and clamped with one end of the connecting plate (76).

10. The waste recycling and reuse equipment in concrete production according to claim 8, characterized in that: The sealing plate assembly (74) comprises: A fixing bar (741), wherein the fixing bar (741) is fixed to an outer wall of the protection frame (51); A blocking plate (742), the blocking plate (742) slides on the top of the unloading plate (721), and the blocking plate (742) is used for scraping metal objects and blocking the inner cavity of the discharge hole (71); A compression spring (743), wherein the compression spring (743) is fixed between the fixing strip (741) and the blocking plate (742); A positioning rod (744), wherein the positioning rod (744) is sleeved in the inner cavity of the compression spring (743), the positioning rod (744) is fixedly connected to the top of the blocking plate (742), and the positioning rod (744) is slidably connected to the bottom of the fixing strip (741).

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