A crushing, screening and recycling device for municipal engineering

Abstract

The present invention relates to the technical field of garbage recycling, and discloses a crushing, screening and recycling device for municipal engineering, including a support frame, a fixed frame, a crushing barrel, a rotating push plate, a rotating disk, a movable screen plate, etc.; the support frame is fixedly connected with a fixed frame, and the fixed frame is fixedly connected with a crushing barrel, and the crushing barrel can crush bricks in municipal engineering garbage, and a crushing shaft is rotatably connected in the crushing barrel, and a rotating push plate is evenly fixed at the bottom end of the crushing shaft, and the broken bricks crushed by the crushing barrel will be pushed onto the movable screen plate by the rotating push plate. This device can crush municipal engineering garbage, and the broken bricks will be pushed outward onto the movable screen plate by the rotating push plate. After the shaking screening mechanism is started, it can drive the movable screen plate to shake up and down to screen the broken bricks. The shaking of the movable screen plate up and down can also drive the broken bricks and other debris accumulated on the top of it to vibrate, so as to prevent the plastic, woven fabric and other debris therein from blocking the sieve holes on the movable screen plate.

Description

Technical Field

[0001] The invention relates to the technical field of garbage recycling, and in particular to a crushing, screening and recycling device for municipal engineering. Background Art

[0002] Municipal engineering waste includes steel bars, large pieces of concrete, waste bricks and wood blocks, etc. The concrete and waste bricks are crushed and then classified and recycled according to the crushed particles.

[0003] Most of the existing municipal engineering waste crushing devices are unable to pick out wood blocks, plastics and woven fabrics in municipal waste. After the municipal engineering waste is crushed, workers are required to manually pick out the remaining wood blocks, plastics and woven fabrics along the conveyor belt, which has low work efficiency and requires additional human resources. Summary of the invention

[0004] The present invention provides a crushing, screening and recovery device for municipal engineering to solve the above problems.

[0005] The technical solution of the present invention is: a crushing, screening and recycling device for municipal engineering, including a supporting frame, a fixed frame, a crushing barrel, a rotating push plate, a rotating disk, a movable screen plate, a shaking screening mechanism and a waste picking mechanism, the supporting frame is fixedly connected with a fixed frame, the fixed frame is fixedly connected with a crushing barrel, a crushing shaft is rotatably connected in the crushing barrel, a rotating push plate is evenly fixedly connected to the bottom end of the crushing shaft, a rotating disk is fixedly connected to the bottom of the crushing shaft rotating in the crushing barrel, slide grooves are evenly spaced on the rotating disk, a movable screen plate is slidably connected in the slide grooves on the rotating disk, the shaking screening mechanism is installed on the fixed frame, the shaking screening mechanism makes the movable screen plate shake up and down and screen the crushed bricks, the waste picking mechanism is installed on the fixed frame, and the waste picking mechanism picks out debris in the broken bricks on the movable screen plate.

[0006] Furthermore, the shaking screening mechanism includes a pushing wheel, a control motor, a screening belt transmission and a fixed protrusion. The pushing wheel is rotatably connected to the fixed frame, the control motor is installed on the support frame, the output shaft of the control motor is connected to the rotating disk through the screening belt transmission, and a fixed protrusion is fixed to the bottom of the movable screen plate.

[0007] Furthermore, the waste picking mechanism includes a recycling frame, an arc-shaped baffle, a transmission shaft, a recycling belt transmission part, a recycling roller, a bevel gear transmission part and a rotating shaft. The fixed frame is rotatably connected to the rotating shaft, and the recycling frame is fixedly connected to the rotating shaft. The recycling frame is in contact with the fixed frame, and the fixed frame provides support for the recycling frame. The fixed frame is rotatably connected to the transmission shaft, and the transmission shaft is connected to the rotating disk through a recycling belt transmission part. A recycling roller is rotatably connected in the recycling frame, and a bevel gear transmission part is provided between the rotating shaft of the recycling roller and the transmission shaft. The recycling frame is fixedly connected to the arc-shaped baffle.

[0008] Furthermore, the end of the recovery rod on the recovery roller is in a hook shape so as to hook the sundries in the broken bricks and prevent the sundries picked up from falling down along the recovery rod.

[0009] Furthermore, it also includes a fixed convex strip and a swing rod. The fixed convex strip is fixedly connected to the rotating shaft of the recovery roller, and the swing rod is fixedly connected to the end of the rotating shaft away from the recovery frame. The end of the swing rod close to the recovery roller is arc-shaped.

[0010] Furthermore, it also includes a lifting baffle, a sliding pushing frame, an L-shaped rod, a connecting spring, a fixed round rod and a lifting frame. The fixed frame is fixedly connected with the L-shaped rod, the sliding pushing frame is slidably connected to the L-shaped rod, a connecting spring is provided between the sliding pushing frame and the L-shaped rod, a rectangular hole is provided on the fixed frame, the sliding pushing frame passes through the rectangular hole on the fixed frame and slides in contact with the rectangular hole on the fixed frame, a lifting baffle is slidably provided on the fixed frame, the lifting baffle is in contact with the sliding pushing frame, a fixed round rod is fixedly connected to the sliding pushing frame, the lifting frame is slidably connected to the fixed frame, a straight hole is provided on the lifting frame, and the fixed round rod is located in the straight hole on the lifting frame.

[0011] Furthermore, it also includes a lifting frame and a mobile frame. The mobile frame is fixedly connected to the sliding pushing frame, and a straight hole is opened on the mobile frame. The lifting frame is slidably connected in the crushing barrel, and a round rod is fixedly connected to the lifting frame. The end of the round rod on the lifting frame is slidably set in the straight hole on the mobile frame.

[0012] Furthermore, it also includes a fixed connecting rod and a lifting screening plate. The fixed connecting rod is fixedly connected to the lifting frame, and the lifting screening plate is slidably connected in the support frame. The lifting screening plate is fixedly connected to the fixed connecting rod.

[0013] Furthermore, the top surface of the lifting screening plate is an inclined surface, a rectangular through hole is opened on the support frame, and the top surface of the lifting screening plate is inclined toward the rectangular through hole.

[0014] The beneficial effects of the present invention are as follows: 1. The device can crush municipal engineering waste, and the crushed bricks will be pushed outwards to the movable screen plate by the rotating push plate. After the shaking screening mechanism is started, the movable screen plate can be driven to shake up and down to screen the crushed bricks. The up and down shaking of the movable screen plate can also drive the broken bricks and other debris accumulated on the top thereof to vibrate, so as to prevent the plastic, woven fabrics and other debris therein from blocking the sieve holes on the movable screen plate. During the screening process, the recovery roller can hook up the plastic, woven fabrics and other debris in the crushed municipal engineering waste on the movable screen plate through the recovery rod and put them into the recovery frame, thereby realizing the function of crushing and screening the municipal engineering waste and automatically picking out the residual plastic and woven fabrics therein.

[0015] 2. When the mobile screen plate is screening the crushed municipal engineering waste, the sliding pushing frame can push the municipal engineering waste accumulated on the edge of the mobile screen plate inward to screen all the crushed municipal engineering waste on the mobile screen plate to ensure the screening effect.

[0016] 3. After two layers of screening by the movable screen plate and the lifting screen plate, the broken bricks of different sizes are classified and recycled according to their sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the structure in the fixed frame of the present invention.

[0019] Figure 3 It is a schematic structural diagram of the bottom of the movable screen plate of the present invention.

[0020] Figure 4 It is a structural schematic diagram of the sliding pushing frame of the present invention.

[0021] Figure 5 It is a structural explosion diagram of the sliding push rack of the present invention.

[0022] Figure 6 It is a structural schematic diagram of the lifting screening plate of the present invention.

[0023] Figure 7 It is a structural schematic diagram of the fixing connecting rod of the present invention.

[0024] Figure 8 It is a schematic structural diagram of the transmission shaft of the present invention.

[0025] Fig. 9 It is a schematic structural diagram of the recovery roller of the present invention.

[0026] Fig.10 It is a schematic structural diagram of the fixing convex strip of the present invention.

[0027] The names and serial numbers of the parts in the figure are: 1. Support frame, 101. Fixed frame, 1011. Pushing wheel, 1012. Lifting baffle, 102. Crushing cylinder, 1021. Lifting frame, 1022. Rotating push plate, 103. Control motor, 104. Rotating disk, 105. Screening belt transmission part, 106. Mobile screen plate, 1061. Fixed convex block, 2. Recovery frame, 201. Arc baffle, 202. Drive shaft, 203. Recovery belt transmission part, 204. Recovery roller, 2041. Fixed convex strip, 205. Bevel gear transmission part, 206. Swing rod, 2061. Rotating shaft, 3. Sliding push frame, 301. Mobile frame, 302. L-shaped rod, 303. Connecting spring, 304. Fixed round rod, 305. Lifting frame, 306. Fixed connecting rod, 4. Lifting screening plate. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0029] Embodiment 1: A crushing, screening and recycling device for municipal engineering, such as Figure 1-Figure 10 As shown, it includes a support frame 1, a fixed frame 101, a crushing barrel 102, a rotating push plate 1022, a rotating disc 104, a movable screen plate 106, a shaking screening mechanism and a waste picking mechanism. The support frame 1 is fixedly connected to the fixed frame 101, and the crushing barrel 102 is fixedly connected to the fixed frame 101. The crushing barrel 102 can crush bricks in municipal engineering garbage. A crushing shaft is rotatably connected in the crushing barrel 102, and a rotating push plate 1022 is evenly fixed at the bottom end of the crushing shaft. The broken bricks after being crushed by the crushing barrel 102 will be pushed onto the movable screen plate 106 by the rotating push plate 1022. The bottom of the rotating crushing shaft in the crushing barrel 102 is fixedly connected to the movable screen plate 106. There is a rotating disk 104, on which slide grooves are evenly spaced, and a movable screen plate 106 is slidably connected in the slide grooves on the rotating disk 104, and the bottom of the slide grooves on the rotating disk 104 is not completely opened. The rotating disk 104 provides support for the movable screen plate 106, and the movable screen plate 106 is fan-shaped, and multiple fan-shaped movable screen plates 106 are interconnected to form a ring. The shaking screening mechanism is installed on the fixed frame 101, and the shaking screening mechanism makes the movable screen plate 106 shake up and down and screen the broken bricks. The waste picking mechanism is installed on the fixed frame 101, and the waste picking mechanism picks out the debris in the broken bricks on the movable screen plate 106.

[0030] Municipal engineering garbage includes bricks, wood, plastics and woven fabrics. When processing municipal engineering garbage, the municipal engineering garbage is put into the crushing drum 102, and the shaking screening mechanism is started at the same time. The shaking screening mechanism drives the mobile screen plate 106 to rotate through the rotating disk 104. When the rotating disk 104 rotates, it drives the crushing rod in the crushing drum 102 to rotate, and the crushing drum 102 breaks the bricks therein, and the broken bricks fall on the top of the rotating disk 104. When the rotating disk 104 drives the crushing rod in the crushing drum 102 to rotate, the crushing rod drives the rotating push plate 1022 to rotate. When the rotating push plate 1022 rotates, the bricks and other debris broken by the crushing rod can be pushed out from the rotating disk 104 to make them fall on the top of the mobile screen plate 106. On the moving screen plate 106, when the moving screen plate 106 rotates with the rotating disk 104, the shaking screening mechanism will make the moving screen plate 106 slide up and down along the rotating disk 104, so that the moving screen plate 106 can screen the municipal engineering waste that falls on the top of it and is crushed, and at the same time, it can avoid large pieces of broken bricks from being blocked on the sieve holes on the moving screen plate 106. Since the rotating disk 104 rotates at a high speed, the rotating push plate 1022 will push the broken bricks to move and collide with the large pieces of broken bricks remaining on the moving screen plate 106, so as to perform secondary crushing on the broken bricks that cannot pass through the moving screen plate 106. During the rotation of the moving screen plate 106, the waste removal mechanism can remove the wood, plastic, woven fabric, etc.

[0031] Embodiment 2: Based on embodiment 1, Figure 1-Figure 3 As shown, the shaking screening mechanism includes a pushing wheel 1011, a control motor 103, a screening belt transmission member 105 and a fixed protrusion 1061. The pushing wheel 1011 is rotatably connected to the fixed frame 101, and the control motor 103 is installed on the support frame 1. The output shaft of the control motor 103 is connected to the rotating disk 104 through the screening belt transmission member 105. The control motor 103 can drive the rotating disk 104 to rotate through the screening belt transmission member 105. A fixed protrusion 1061 is fixedly connected to the bottom of the movable screen plate 106. The fixed protrusion 1061 is a semicircular block. During the process of the rotating disk 104 driving the movable screen plate 106 to rotate, the fixed protrusion 1061 cooperates with the pushing wheel 1011 to make the movable screen plate 106 move up and down. During the process of the movable screen plate 106 moving up and down, the crushed bricks on the top of the movable screen plate 106 are screened.

[0032] During crushing, the control motor 103 is started, and the control motor 103 drives the rotating disk 104 to rotate through the screening belt transmission member 105. When the rotating disk 104 rotates, the movable screen plate 106 can be driven to rotate, and the fixed protrusion 1061 on the movable screen plate 106 moves accordingly, and the fixed protrusion 1061 contacts the outer surface of the lifting wheel 1011. As the movable screen plate 106 continues to rotate, the lifting wheel 1011 pushes the movable screen plate 106 to slide upward along the rotating disk 104 through the fixed protrusion 1061. When the fixed protrusion 1061 and the movable screen plate 106 rise to the highest point, the movable screen plate 106 continues to rotate with the rotating disk 104, and the fixed protrusion 1061 and the movable screen plate 106 will slide downward along the rotating disk 104, so that the movable screen plate 106 is constantly shaking up and down, and the broken bricks on the movable screen plate 106 and the debris contained therein also shake accordingly, so that the broken bricks can be quickly screened, and at the same time, large pieces of broken bricks and the debris contained therein can be prevented from blocking the sieve holes, thereby ensuring the screening efficiency.

[0033] like Figure 8-Figure 10 As shown, the waste picking mechanism includes a recycling frame 2, an arc baffle 201, a transmission shaft 202, a recycling belt transmission member 203, a recycling roller 204, a bevel gear transmission member 205 and a rotating shaft 2061. The fixed frame 101 is rotatably connected with the rotating shaft 2061, and the recycling frame 2 is fixedly connected to the rotating shaft 2061. The recycling frame 2 is in contact with the fixed frame 101, and the fixed frame 101 provides support for the recycling frame 2. The fixed frame 101 is rotatably connected with the transmission shaft 202, and the transmission shaft 202 is connected to the rotating disk 104 through the recycling belt transmission member 203. The rotating disk 104 drives the transmission shaft 202 to rotate through the recycling belt transmission member 203. A recovery roller 204 is connected, and a bevel gear transmission member 205 is provided between the rotating shaft of the recovery roller 204 and the transmission shaft 202. The transmission shaft 202 drives the recovery roller 204 to rotate through the bevel gear transmission member 205. When the recovery roller 204 rotates, the debris in the broken bricks can be picked out. An arc-shaped baffle plate 201 is fixedly connected to the recovery frame 2. The debris picked up by the recovery rod on the recovery roller 204 is blocked by the recovery frame 2 to prevent the debris from sliding down from the recovery rod. The debris picked up by the recovery roller 204 will be put into the recovery frame 2; the end of the recovery rod on the recovery roller 204 is a hook-shaped one to hook the debris in the broken bricks to prevent the picked up debris from falling down along the recovery rod.

[0034] When the mobile screen plate 106 rotates with the rotating disk 104, the rotating disk 104 will drive the transmission shaft 202 to rotate through the recycling belt transmission member 203, and the transmission shaft 202 will drive the recycling roller 204 to rotate through the bevel gear transmission member 205. When the mobile screen plate 106 passes through the recycling roller 204, the recycling rod on the recycling roller 204 can pick up the wood, plastic, weaving and other debris on the mobile screen plate 106. As the recycling roller 204 continues to rotate, the arc baffle 201 can block the wood and other debris on the recycling rod. The end of the recycling rod is in a hook shape, which can hook up the debris contained in the broken bricks to prevent the debris from sliding down along the recycling rod. The recycling roller 204 continues to rotate and can send the wood, plastic and weaving into the recycling frame 2 through the recycling rod, thereby realizing the function of automatically picking out the plastic and other debris in the broken bricks on the mobile screen plate 106.

[0035] Embodiment 3: Based on embodiment 2, Fig.10 As shown, it also includes a fixed convex strip 2041 and a swing rod 206. The fixed convex strip 2041 is fixedly connected to the rotating shaft of the recovery roller 204, and the swing rod 206 is fixedly connected to the end of the rotating shaft 2061 away from the recovery frame 2. The end of the swing rod 206 close to the recovery roller 204 is arc-shaped, and the arc-shaped end of the swing rod 206 is placed on the rotating shaft of the recovery roller 204. When the recovery roller 204 rotates, the swing rod 206 can be pushed to swing upward through the fixed convex strip 2041, and the recovery frame 2 is driven to swing upward through the rotating shaft 2061, so that the debris in the recovery frame 2 can quickly slide down.

[0036] When the recycling roller 204 rotates, it can drive the fixed convex strip 2041 to rotate. During the rotation process, the fixed convex strip 2041 will contact one arc-shaped end of the swing rod 206 and push it to swing upward. When the swing rod 206 swings upward, it drives the recycling frame 2 to swing upward through the rotating shaft 2061, so that the debris in the recycling frame 2 can slide down quickly. When the fixed convex strip 2041 is out of contact with the swing rod 206, the recycling frame 2 will drive the rotating shaft 2061 and the swing rod 206 to swing downward and reset under the influence of its own gravity.

[0037] like Figure 4 and Figure 5As shown, it also includes a lifting baffle 1012, a sliding push frame 3, an L-shaped rod 302, a connecting spring 303, a fixed round rod 304 and a lifting frame 305. The fixed frame 101 is fixedly connected with the L-shaped rod 302, and the sliding push frame 3 is slidably connected to the L-shaped rod 302. A connecting spring 303 is provided between the sliding push frame 3 and the L-shaped rod 302. One end of the connecting spring 303 is fixed to the L-shaped rod 302, and the other end is fixed to the sliding push frame 3. A rectangular hole is opened on the fixed frame 101, and the sliding push frame 3 passes through the rectangular hole on the fixed frame 101 and slides with it. Dynamic contact, a lifting baffle 1012 is slidingly provided on the fixed frame 101, and the lifting baffle 1012 is used to block the rectangular hole on the fixed frame 101. The lifting baffle 1012 contacts the sliding pushing frame 3, and the sliding pushing frame 3 can push the lifting baffle upward when sliding inward along the fixed frame 101. A fixed round rod 304 is fixedly connected to the sliding pushing frame 3, and a lifting frame 305 is slidingly connected to the fixed frame 101. The lifting frame 305 slides up and down along the fixed frame 101, and a straight hole is provided on the lifting frame 305, and the fixed round rod 304 is located in the straight hole on the lifting frame 305.

[0038] Some broken bricks and debris will accumulate at the contact position between the movable screen plate 106 and the fixed frame 101. During the rotation of the movable screen plate 106, the fixed protrusion 1061 at the bottom of the movable screen plate 106 contacts the top surface of the lifting frame 305 and pushes it to slide downward along the fixed frame 101. When the lifting frame 305 descends, since the fixed round rod 304 is slidably arranged in the straight hole on the lifting frame 305, the fixed round rod 304 and the sliding push frame 3 slide in the horizontal direction along the L-shaped rod 302 and the fixed frame 101, and the height is infinite. When the lifting frame 305 descends, it will pull the sliding push frame 3 to slide along the L-shaped rod 302 away from the crushing cylinder 102 through the fixed round rod 304. At this time, the connecting spring 303 is compressed. When the sliding push frame 3 slides away from the crushing cylinder 102, the lifting baffle 1012 is no longer supported by the sliding push frame 3. The lifting baffle 1012 slides downward and blocks the rectangular hole on the fixed frame 101, thereby preventing the broken bricks and debris on the mobile screen plate 106 from being ejected outward from the rectangular hole on the fixed frame 101. When the fixed protrusion 1061 at the bottom of the movable screen plate 106 is out of contact with the lifting frame 305, the connecting spring 303 pushes the sliding push frame 3 to slide along the L-shaped rod 302 toward the direction close to the crushing cylinder 102. At this time, the sliding push frame 3 will push the lifting frame 305 upward through the fixed round rod 304. In this process, the sliding push frame 3 will push the lifting baffle 1012 upward, and then the sliding push frame 3 will continue to move to push the broken bricks accumulated on the edge of the movable screen plate 106 toward the crushing cylinder 102. When the fixed protrusion 1061 at the bottom of the next movable screen plate 106 contacts the lifting frame 305 again, the lifting frame 305 will slide downward along the fixed frame 101 again. When the lifting frame 305 descends, it will slide along the L-shaped rod 302 through the sliding push frame 3 to move away from the crushing cylinder 102. As the movable screen plate 106 passes through the lifting frame 305, the sliding push frame 3 will slide back and forth along the L-shaped rod 302 and push the broken bricks accumulated on the edge of the movable screen plate 106 toward the crushing cylinder 102.

[0039] like Figure 4 As shown, it also includes a lifting frame 1021 and a moving frame 301. The moving frame 301 is fixedly connected to the sliding pushing frame 3. The moving frame 301 is provided with a straight hole. The lifting frame 1021 is slidably connected in the crushing barrel 102. A round rod is fixedly connected to the lifting frame 1021. The end of the round rod on the lifting frame 1021 is slidably set in the straight hole on the moving frame 301.

[0040] When the sliding push rack 3 moves toward the direction close to the crushing cylinder 102, the mobile rack 301 moves accordingly and is pushed by the round rod on the lifting frame 1021 to slide downward along the crushing cylinder 102, so that the bottom of the lifting frame 1021 contacts the surface of the rotating disk 104. At this time, the lifting frame 1021 blocks the bottom outlet of the crushing cylinder 102 to prevent the sliding push rack 3 from pushing the broken bricks into the crushing cylinder 102. When the sliding push rack 3 moves toward the direction away from the crushing cylinder 102, the mobile rack 301 moves accordingly and is pushed by the lifting frame 1021. The round rod on it pushes it to slide upward along the crushing cylinder 102. At this time, the bottom outlet of the crushing cylinder 102 is opened, and the municipal engineering waste crushed in the crushing cylinder 102 is pushed outward by the rotating push plate 1022. The outlet at the bottom of the crushing cylinder 102 is opened and closed intermittently, which can prevent excessive accumulation of municipal engineering waste on the movable screen plate 106. When the sliding push frame 3 pushes the broken bricks at the edge of the movable screen plate 106 to move, the broken bricks on the movable screen plate 106 collide again to crush the bricks on the movable screen plate 106 again.

[0041] like Figure 5-Figure 7 As shown, it also includes a fixed connecting rod 306 and a lifting screening plate 4. The fixed connecting rod 306 is fixedly connected to the lifting frame 305, and the lifting screening plate 4 is slidably connected in the support frame 1. The lifting screening plate 4 is fixedly connected to the fixed connecting rod 306. The lifting frame 305 drives the lifting screening plate 4 to move up and down through the fixed connecting rod 306. The top surface of the lifting screening plate 4 is an inclined surface. A rectangular through hole is opened on the support frame 1, and the top surface of the lifting screening plate 4 is inclined toward the rectangular through hole.

[0042] The broken bricks passing through the mobile screen plate 106 will fall on the lifting screening plate 4. When the lifting frame 305 descends, the lifting screening plate 4 will be driven to descend through the fixed connecting rod 306. When the lifting frame 305 rises, the lifting screening plate 4 will be driven to rise through the fixed connecting rod 306. During the up and down movement of the lifting frame 305, the lifting screening plate 4 can be moved up and down to screen the broken bricks fallen on the lifting frame 305. When the lifting screening plate 4 descends, the lowest point of its top inclined surface is flush with the inner bottom surface of the rectangular through hole on the support frame 1. At this time, the broken bricks falling on the lifting screening plate 4 will roll outward through the rectangular through hole on the support frame 1.

[0043] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation shall fall within the protection scope of the present invention.

Claims

1. A crushing, screening and recycling device for municipal engineering, characterized in that: The invention comprises a support frame (1), a fixed frame (101), a crushing barrel (102), a rotating push plate (1022), a rotating disk (104), a movable screen plate (106), a shaking screening mechanism and a waste picking mechanism. The support frame (1) is fixedly connected to the fixed frame (101), the crushing barrel (102) is fixedly connected to the fixed frame (101), a crushing shaft is rotatably connected in the crushing barrel (102), the bottom end of the crushing shaft is evenly fixedly connected to the rotating push plate (1022), and the crushing barrel (102) is rotatably connected in the crushing barrel (102). A rotating disc (104) is fixedly connected to the bottom of the rotating crushing shaft, and chutes are evenly spaced on the rotating disc (104). A movable screen plate (106) is slidably connected in the chutes on the rotating disc (104). A shaking screening mechanism is mounted on the fixed frame (101). The shaking screening mechanism causes the movable screen plate (106) to shake up and down and screen the crushed bricks. A waste removal mechanism is mounted on the fixed frame (101). The waste removal mechanism removes debris from the crushed bricks on the movable screen plate (106). The shaking screening mechanism comprises a lifting wheel (1011), a control motor (103), a screening belt transmission member (105) and a fixed protrusion (1061); the lifting wheel (1011) is rotatably connected to the fixed frame (101); the control motor (103) is mounted on the support frame (1); the output shaft of the control motor (103) is connected to the rotating disk (104) via the screening belt transmission member (105); and the bottom of the movable screen plate (106) is fixedly connected to the fixed protrusion (1061); The waste picking mechanism comprises a recycling frame (2), an arc-shaped baffle (201), a transmission shaft (202), a recycling belt transmission member (203), a recycling roller (204), a bevel gear transmission member (205) and a rotating shaft (2061); the fixed frame (101) is rotatably connected to the rotating shaft (2061); the recycling frame (2) is fixedly connected to the rotating shaft (2061); the recycling frame (2) is in contact with the fixed frame (101); the fixed frame (101) provides support for the recycling frame (2); the fixed frame (101) is rotatably connected to the transmission shaft (202); the transmission shaft (202) and the rotating disk (104) are connected via the recycling belt transmission member (203); the recycling roller (204) is rotatably connected inside the recycling frame (2); a bevel gear transmission member (205) is provided between the rotating shaft of the recycling roller (204) and the transmission shaft (202); and the recycling frame (2) is fixedly connected to the arc-shaped baffle (201).

2. A crushing, screening and recycling device for municipal engineering according to claim 1, characterized in that: The end of the recovery rod on the recovery roller (204) is a hook-shaped one, so as to hook the debris in the broken bricks and prevent the picked-up debris from falling down along the recovery rod.

3. A crushing, screening and recycling device for municipal engineering according to claim 1, characterized in that: It also comprises a fixed convex strip (2041) and a swinging rod (206); the fixed convex strip (2041) is fixedly connected to the rotating shaft of the recovery roller (204); the swinging rod (206) is fixedly connected to one end of the rotating shaft (2061) away from the recovery frame (2); and the end of the swinging rod (206) close to the recovery roller (204) is arc-shaped.

4. A crushing, screening and recycling device for municipal engineering according to claim 1, characterized in that: The invention also comprises a lifting baffle (1012), a sliding push frame (3), an L-shaped rod (302), a connecting spring (303), a fixed round rod (304) and a lifting frame (305); the fixed frame (101) is fixedly connected with the L-shaped rod (302); the sliding push frame (3) is slidably connected with the L-shaped rod (302); a connecting spring (303) is provided between the sliding push frame (3) and the L-shaped rod (302); a rectangular hole is opened on the fixed frame (101); the sliding push frame (3) is connected to the L-shaped rod (302); 3) passing through a rectangular hole on a fixed frame (101) and in sliding contact therewith, a lifting baffle (1012) is slidably provided on the fixed frame (101), the lifting baffle (1012) is in contact with a sliding push frame (3), a fixed round rod (304) is fixedly connected to the sliding push frame (3), a lifting frame (305) is slidably connected to the fixed frame (101), a straight hole is provided on the lifting frame (305), and the fixed round rod (304) is located in the straight hole on the lifting frame (305).

5. A crushing, screening and recycling device for municipal engineering according to claim 4, characterized in that: The invention also comprises a lifting frame (1021) and a moving frame (301), wherein the moving frame (301) is fixedly connected to the sliding push frame (3), a straight hole is provided on the moving frame (301), the lifting frame (1021) is slidably connected inside the crushing cylinder (102), a round rod is fixedly connected to the lifting frame (1021), and the end of the round rod on the lifting frame (1021) is slidably arranged in the straight hole on the moving frame (301).

6. A crushing, screening and recycling device for municipal engineering according to claim 4, characterized in that: It also comprises a fixed connecting rod (306) and a lifting screening plate (4); the fixed connecting rod (306) is fixedly connected to the lifting frame (305); the lifting screening plate (4) is slidably connected in the support frame (1); and the lifting screening plate (4) is fixedly connected to the fixed connecting rod (306).

7. A crushing, screening and recycling device for municipal engineering according to claim 6, characterized in that: The top surface of the lifting screening plate (4) is an inclined surface, a rectangular through hole is provided on the support frame (1), and the top surface of the lifting screening plate (4) is inclined toward the rectangular through hole.

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