A construction waste screening and processing equipment

Abstract

The present invention discloses a construction waste screening and processing equipment, including a box body, a first rotating shaft is rotatably connected inside the box body, a second rotating shaft is rotatably connected inside the box body and located on one side of the first rotating shaft, crushing rollers are fixedly connected to the outside of the first rotating shaft and the second rotating shaft, a first gear is fixedly connected to the outside of the first rotating shaft, a second gear is fixedly connected to the outside of the second rotating shaft, the second gear is meshingly connected to the first gear, and a screening mechanism is arranged inside the box body and below the crushing roller. It belongs to the technical field of construction waste processing. In the construction waste screening and processing equipment, when the motor is reversed, the insertion rod is engaged with the slot, driving the movable rod to rotate, the movable rod drives the rotating rod to rotate through the worm and the worm gear, and finally the rotating rod drives the third rotating shaft to rotate, thereby adjusting the position of the screening plate on the third rotating shaft, selecting different screening holes, and achieving the purpose of screening out construction waste of different specifications and sizes, and the operation is also relatively convenient.

Description

Technical Field

[0001] The invention relates to the technical field of construction waste treatment, and more specifically to a construction waste screening and treatment device. Background Art

[0002] Construction waste refers to the dregs, abandoned soil, abandoned materials, residual mud and other waste generated during the construction, laying, demolition and repair of various buildings, structures, pipelines, etc. by construction units or individuals. It often includes dregs, concrete blocks, broken stones, brick and tile fragments, waste plastics, waste metals, waste glass, waste fabrics, etc.

[0003] The Chinese patent discloses "a construction waste treatment device for the construction field" with patent number CN202321702668.1. The scheme records "a construction waste treatment device for the construction field, including a base frame, a support device, a guide cylinder, a guide rod, a tank body, a collection box, a funnel, a crossbeam, an adjustable crushing device, a shock absorbing device and a screening drive device, wherein the support device is located on both sides of the base frame, the guide cylinder is arranged on the base frame, the guide rod is slidably arranged in the guide cylinder, the tank body is connected to the guide rod, the collection box is arranged on the base frame, the funnel is arranged at the upper end of the tank body, the crossbeam is arranged on the tank body, and the adjustable crushing device is arranged on the base frame. On the beam and at the lower end of the funnel, the shock absorbing device is arranged on the base frame and connected to the tank body, and the screening driving device is arranged in the tank body. ", the utility model belongs to the technical field of construction waste treatment, specifically refers to a construction waste treatment device for the construction field that can process and absorb dust, has mobility, and can effectively absorb the vibration generated during crushing, but there are still certain problems. The device screens the crushed construction waste through a screening net, but the screening net has only one specification, and it is inconvenient to replace it inside the device, resulting in the device only screening out one size of construction waste, which has certain limitations. Summary of the invention

[0004] The purpose of the present invention is to provide a construction waste screening and processing device to solve the problems raised in the above background technology:

[0005] Some existing construction waste screening and processing equipment screens the crushed construction waste through a screening net, but the screening net has only one specification and is inside the equipment, which is very inconvenient to replace, resulting in the equipment being able to screen only one size of construction waste, which has certain limitations.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A construction waste screening and processing equipment comprises a box body, wherein a first rotating shaft is rotatably connected inside the box body, a second rotating shaft is rotatably connected inside the box body and located on one side of the first rotating shaft, and crushing rollers are fixedly connected to the outside of the first rotating shaft and the second rotating shaft. Due to the action of a first gear and a second gear that are meshed with each other, the first rotating shaft and the second rotating shaft rotate in opposite directions, and the crushing rollers are cooperated to crush construction waste. The first rotating shaft is fixedly connected to the outside of the first rotating shaft, and the second rotating shaft is fixedly connected to the outside of the second rotating shaft, and the second gear is meshed with the first gear. A screening mechanism is arranged inside the box body and below the crushing roller, a transmission mechanism is arranged outside the box body and located on one side of the second gear, and a power mechanism is arranged on the outside of the box body away from the transmission mechanism. The power mechanism drives the crushing rollers to crush construction waste through the transmission mechanism.

[0008] Preferably, the screening mechanism includes a screening box, one side of the screening box is slidably connected with a fixed rod, the fixed rod is fixedly connected to the box body, the other side of the screening box is movably connected with a movable rod, the movable rod vertically penetrates the box body and extends to the outside of the box body, the movable rod is rotatably connected to the box body, the inside of the screening box is rotatably connected with a third rotating shaft, the outside of the third rotating shaft is fixedly connected with a screening plate, the corresponding two side edges of the screening plate are provided with screening holes, the inside of the screening plate is fixedly connected with a partition plate, the partition plate is fixedly connected to the third rotating shaft, the inside of the third rotating shaft and the corresponding two side edges of the partition plate are provided with through grooves, the through grooves are connected with the inside of the third rotating shaft, the crushed construction waste falls into the screening box, and the screening box shakes back and forth to screen the construction waste.

[0009] Preferably, there are three screening plates in total, and the three screening plates are symmetrically distributed, and two adjacent screening plates cooperate with a screening box to screen the crushed construction waste.

[0010] Preferably, the screening plate is of a U-shaped structure, with screening holes provided on both sides of the screening plate. The aperture diameters of the screening holes of the same screening plate are different, but the aperture diameters of the screening holes between two adjacent screening plates are the same, so that the screening box and the screening plate can screen out three different sizes of crushed construction waste, and the outer wall of the screening plate is in contact with the inner wall of the screening box to prevent the crushed construction waste from passing through the gap between the screening plate and the screening box due to excessive gap, or jamming the screening plate and making it unable to rotate, and a connecting plate is provided between two adjacent screening plates.

[0011] Preferably, one end of the third rotating shaft is fixedly connected to a rotating rod, which vertically penetrates the screening box and extends to the outside of the screening box, the rotating rod is rotatably connected to the screening box, and the outer end of the rotating rod away from the third rotating shaft is fixedly connected to a worm gear, the outer part of the movable rod is sleeved with a worm, the worm is meshingly connected with the worm gear, the movable rod is slidingly connected to the worm, the outer part of the worm is sleeved with a fixed plate, the fixed plate is fixedly connected to the screening box, the worm is rotatably connected to the fixed plate, the part of the movable rod on which the worm is sleeved has a square structure in cross section, so that when the movable rod rotates, the worm can drive the rotation, and the worm then drives the third rotating shaft in the screening box to rotate through the worm gear and the rotating rod, and when the third rotating shaft rotates, the relative positions of the three screening plates can be adjusted.

[0012] Preferably, a feed port is provided at the top of the screening box, and a discharge port is provided at the bottom of the screening box. The crushed construction waste will fall into the screening box through the feed port, and will continue to fall through the discharge port after screening. A collection box for collecting the screened construction waste is placed inside the box and below the screening box.

[0013] Preferably, the transmission mechanism includes a swing plate, the swing plate is rotatably connected to the box body, the swing plate is provided with a sliding groove, the sliding groove is slidably connected to a sliding rod, the sliding rod is fixedly connected to the second gear, the outside of the swing plate is fixedly connected to an outer ring gear, the inside of the box body and is rotatably connected to a fourth rotating shaft above the outer ring gear, one end of the fourth rotating shaft is fixedly connected to an inclined cylinder, the other end of the fourth rotating shaft is fixedly connected to the third gear, the third gear is meshed with the outer ring gear, the outside of the screening box is fixedly connected to a convex rod, the convex rod is used in conjunction with the inclined cylinder, the outside of the fixed rod and the movable rod and are located between the screening box and the box body are both sleeved with a first spring, when the fourth rotating shaft drives the inclined cylinder to rotate, the inclined cylinder will squeeze the convex rod on the screening box, thereby driving the screening box to move in a direction close to the first spring and compressing the first spring at the same time, cooperating with the elastic force of the first spring to make the screening box shake back and forth in the box body, so as to achieve the purpose of screening construction waste.

[0014] Preferably, the power mechanism includes a motor, the motor is fixedly connected to the box, the output end of the motor is fixedly connected to a fifth rotating shaft, the outside of the fifth rotating shaft is fixedly connected to a first pulley, the outside of the second rotating shaft is fixedly connected to a second pulley, the second pulley is connected to the first pulley via a transmission belt transmission connection, the transmission belt, the first pulley and the second pulley rotate, so that the motor can drive the second rotating shaft to rotate, the outside of the fifth rotating shaft is fixedly connected to a first circular plate at one end away from the motor, the inside of the first circular plate is slidably connected to a plug rod, there are two plug rods in total, the two plug rods are symmetrically distributed, and the outside of the plug rods A baffle is fixedly connected, and a second spring is sleeved on the outside of the insertion rod and located between the first circular plate and the baffle. A second circular plate is fixedly connected to the outside of the movable rod at one end close to the first circular plate. A slot is provided on the inside of the second circular plate on a side away from the movable rod. The slot is used in conjunction with the insertion rod. Under the elastic force of the second spring, the insertion rod on the first circular plate can always be located in the slot on the second circular plate. The slot is a slope structure. When the motor drives the fifth rotating shaft and the first circular plate to rotate forward, the insertion rod only sweeps across the slot. When the motor drives the fifth rotating shaft and the first circular plate to reverse, the insertion rod will eventually press against the inner wall of the slot, thereby driving the second circular plate and the movable rod to rotate together.

[0015] Preferably, a control panel is fixedly connected to the outside of the box, the motor is electrically connected to the control panel, the electrical equipment is powered by an external power supply, such as AC power, and the start, stop, and forward and reverse rotation of the motor are controlled by the control panel.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1) When the construction waste screening and processing equipment is in use, when the motor reverses, the plug rod on the first circular plate engages with the slot on the second circular plate, driving the movable rod to rotate, and the movable rod drives the rotating rod to rotate through the worm and the worm gear, and finally the rotating rod drives the third rotating shaft to rotate, thereby adjusting the position of the screening plate on the third rotating shaft and selecting different screening holes to achieve the purpose of screening out construction waste of different specifications and sizes, and the operation is also relatively convenient.

[0018] 2) When the construction waste screening and processing equipment is in use, when the crushing roller crushes the construction waste, the second gear will drive the slide bar to squeeze the inner wall of the slide slot, thereby driving the swing plate to swing back and forth, and the swing plate will then drive the fourth shaft to rotate through the outer gear ring and the third gear, and the fourth shaft will drive the inclined cylinder to rotate. The inclined cylinder will squeeze the convex rod on the screening box, thereby driving the screening box to move in the direction close to the first spring and compress the first spring at the same time. The elastic force of the first spring makes the screening box shake back and forth in the box body, so that the construction waste can be crushed and screened at the same time.

[0019] 3) When the construction waste screening and processing equipment is in use, under the elastic force of the second spring, the insertion rod on the first circular plate can always be located in the slot on the second circular plate. The slot is a slope structure. When the motor drives the fifth rotating shaft and the first circular plate to rotate forward, the insertion rod just sweeps across the slot. When the motor drives the fifth rotating shaft and the first circular plate to rotate reversely, the insertion rod will eventually press against the inner wall of the slot, thereby driving the second circular plate and the movable rod to rotate together, so that the adjustment of the screening plate will not conflict with the crushing and screening of the construction waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the motor of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the discharge port of the present invention;

[0023] Figure 4 is a schematic structural diagram of the second rotating shaft of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the movable rod of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the sieve plate of the present invention;

[0026] Figure 7 It is a structural schematic diagram of the through slot of the present invention;

[0027] Figure 8 It is a structural schematic diagram of the plug rod of the present invention;

[0028] Fig. 9 It is a schematic diagram of the structure of the slot of the present invention.

[0029] Explanation of the numbers in the figure: 1, box body; 2, first rotating shaft; 3, second rotating shaft; 4, crushing roller; 5, first gear; 6, second gear; 7, screening mechanism; 701, screening box; 702, fixed rod; 703, movable rod; 704, third rotating shaft; 705, screening plate; 706, screening hole; 707, partition plate; 708, through groove; 709, rotating rod; 710, worm wheel; 711, worm; 712, fixed plate; 713, feed port; 714, discharge port; 8, transmission mechanism; 801, pendulum Moving plate; 802, slide groove; 803, slide rod; 804, outer gear ring; 805, fourth rotating shaft; 806, inclined cylinder; 807, third gear; 808, convex rod; 809, first spring; 9, power mechanism; 901, motor; 902, fifth rotating shaft; 903, first pulley; 904, second pulley; 905, transmission belt; 906, first circular plate; 907, plug rod; 908, baffle; 909, second spring; 910, second circular plate; 911, slot; 10, control panel. DETAILED DESCRIPTION

[0030] 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.

[0031] See also Figures 1 to 9 , a construction waste screening and processing equipment comprises a box body 1, wherein a first rotating shaft 2 is rotatably connected inside the box body 1, a second rotating shaft 3 is rotatably connected inside the box body 1 and located on one side of the first rotating shaft 2, a crushing roller 4 is fixedly connected to the outside of the first rotating shaft 2 and the second rotating shaft 3, and due to the action of the mutually meshing first gear 5 and the second gear 6, the first rotating shaft 2 and the second rotating shaft 3 rotate in opposite directions, and the construction waste is crushed in cooperation with the crushing roller 4, the first rotating shaft 2 is fixedly connected to the outside, the second rotating shaft 3 is fixedly connected to the outside, and the second gear 6 is meshed with the first gear 5, a screening mechanism 7 is arranged inside the box body 1 and below the crushing roller 4, a transmission mechanism 8 is arranged outside the box body 1 and located on one side of the second gear 6, and a power mechanism 9 is arranged on the side of the outside of the box body 1 away from the transmission mechanism 8, and the power mechanism 9 drives the crushing roller 4 to rotate through the transmission mechanism 8 to crush the construction waste.

[0032] Furthermore, the screening mechanism 7 includes a screening box 701, one side of the screening box 701 is slidably connected to a fixed rod 702, the fixed rod 702 is fixedly connected to the box body 1, the other side of the screening box 701 is movably connected to a movable rod 703, the movable rod 703 vertically penetrates the box body 1 and extends to the outside of the box body 1, the movable rod 703 is rotatably connected to the box body 1, the inside of the screening box 701 is rotatably connected to a third rotating shaft 704, the outside of the third rotating shaft 704 is fixedly connected to a screening plate 705, the corresponding two sides of the screening plate 705 are provided with screening holes 706, the inside of the screening plate 705 is fixedly connected to a partition plate 707, the partition plate 707 07 is fixedly connected to the third rotating shaft 704, and through grooves 708 are provided inside the third rotating shaft 704 and on the corresponding two side edges of the partition plate 707. The through grooves 708 are connected to the inside of the third rotating shaft 704, and the crushed construction waste falls into the screening box 701. As the screening box 701 shakes back and forth, the crushed construction waste can be screened, so that smaller construction waste can enter the inner side of the screening plate 705 through the screening holes 706 on the screening plate 705, and then pass through the through grooves 708 under the action of the partition plate 707 and enter the inside of the third rotating shaft 704, and finally continue to fall out of the screening box 701.

[0033] Furthermore, there are three screening plates 705 , which are symmetrically distributed. Two adjacent screening plates 705 cooperate with the screening box 701 to screen the crushed construction waste.

[0034] Furthermore, the screening plate 705 is a U-shaped structure, and the screening holes 706 are provided on both sides of the screening plate 705. The apertures of the screening holes 706 of the same screening plate 705 are different, but the apertures of the screening holes 706 between two adjacent screening plates 705 are the same, so that the screening box 701 cooperates with the screening plate 705 to screen out three different sizes of crushed construction waste. The outer wall of the screening plate 705 fits with the inner wall of the screening box 701 to prevent the crushed construction waste from passing through the gap due to the large gap between the screening plate 705 and the screening box 701, or to prevent the screening plate 705 from being stuck and causing the screening plate 705 to be unable to rotate, and a connecting plate is provided between two adjacent screening plates 705, which can strengthen the overall stability of the screening plate 705 and prevent the space between the screening plates 705 from being too deep, causing the crushed garbage to accumulate and be unable to pass through the screening holes 706 smoothly.

[0035] Furthermore, one end of the third rotating shaft 704 is fixedly connected to a rotating rod 709, which vertically penetrates the screening box 701 and extends to the outside of the screening box 701. The rotating rod 709 is rotatably connected to the screening box 701, and one end of the rotating rod 709 away from the third rotating shaft 704 is fixedly connected to a worm gear 710. The outer sleeve of the movable rod 703 is provided with a worm 711, which is meshed and connected with the worm gear 710. The movable rod 703 is slidably connected to the worm 711, and the outer sleeve of the worm 711 is provided with a fixed plate 71 2. The fixed plate 712 is fixedly connected to the screening box 701, the worm 711 is rotatably connected to the fixed plate 712, and the part of the worm 711 is sleeved on the outside of the movable rod 703, and its cross-section is a square structure, so that when the movable rod 703 rotates, it can drive the worm 711 to rotate, and the worm 711 then drives the third rotating shaft 704 in the screening box 701 to rotate through the worm wheel 710 and the rotating rod 709. When the third rotating shaft 704 rotates, the relative positions of the three screening plates 705 can be adjusted, thereby facilitating the screening of construction waste of different specifications.

[0036] Furthermore, a feed port 713 is provided at the top of the screening box 701, and a discharge port 714 is provided at the bottom of the screening box 701. The crushed construction waste will fall into the screening box 701 through the feed port 713, and will continue to fall through the discharge port 714 after screening. A collection box is placed inside the box body 1 and below the screening box 701 to collect the screened construction waste for subsequent centralized processing.

[0037] Furthermore, the transmission mechanism 8 includes a swing plate 801, which is rotatably connected to the box body 1, a slide groove 802 is provided inside the swing plate 801, a slide rod 803 is slidably connected inside the slide groove 802, and the slide rod 803 is fixedly connected to the second gear 6, and an outer gear ring 804 is fixedly connected to the outside of the swing plate 801, and a fourth rotating shaft 805 is rotatably connected inside the box body 1 and above the outer gear ring 804, and one end of the fourth rotating shaft 805 is fixedly connected to a beveled cylinder 806, and the other end of the fourth rotating shaft 805 is fixedly connected to a third gear 807, and the third gear 807 is meshed with the outer gear ring 804, and the screening box 7 01 is fixedly connected to the outside with a protruding rod 808, which is used in conjunction with the inclined cylinder 806. A first spring 809 is sleeved on the outside of the fixed rod 702 and the movable rod 703 and located between the screening box 701 and the box body 1. When the fourth rotating shaft 805 drives the inclined cylinder 806 to rotate, the inclined cylinder 806 will squeeze the protruding rod 808 on the screening box 701, thereby driving the screening box 701 to move in the direction close to the first spring 809 and compressing the first spring 809 at the same time. The elastic force of the first spring 809 makes the screening box 701 shake back and forth in the box body 1, so that the crushed construction waste can be screened.

[0038] Furthermore, the power mechanism 9 includes a motor 901, which is fixedly connected to the housing 1, and the output end of the motor 901 is fixedly connected to a fifth rotating shaft 902, the outside of the fifth rotating shaft 902 is fixedly connected to a first pulley 903, the outside of the second rotating shaft 3 is fixedly connected to a second pulley 904, and the second pulley 904 is connected to the first pulley 903 through a transmission belt 905. When the motor 901 is started, the first pulley 903 is driven to rotate by the fifth rotating shaft 902, the first pulley 903 drives the second pulley 904 to rotate through the transmission belt 905, and the second pulley 904 drives the second rotating shaft 3 to rotate, and the second rotating shaft 3 drives the first rotating shaft 2 to rotate through the mutually meshing first gear 5 and second gear 6. The first rotating shaft 2 and the second rotating shaft 3 rotate in opposite directions, and finally the first rotating shaft 2 and the second rotating shaft 3 crush the construction waste through the crushing roller 4, and the end of the outside of the fifth rotating shaft 902 away from the motor 901 is fixedly connected to a first circular plate 906, and the inside of the first circular plate 906 is slidably connected There are two plug rods 907, and the two plug rods 907 are symmetrically distributed. The outside of the plug rod 907 is fixedly connected with a baffle 908. The outside of the plug rod 907 and the baffle 908 are sleeved with a second spring 909. The end of the outside of the movable rod 703 close to the first circular plate 906 is fixedly connected to the second circular plate 910. The inside of the second circular plate 910 is provided with a slot 911 on the side away from the movable rod 703. The slot 911 is used in conjunction with the plug rod 907. Under the elastic force of the spring 909, the insertion rod 907 on the first circular plate 906 can always be located in the slot 911 on the second circular plate 910. The slot 911 is a slope structure. When the motor 901 drives the fifth rotating shaft 902 and the first circular plate 906 to rotate forward, the insertion rod 907 only sweeps across the slot 911. When the motor 901 drives the fifth rotating shaft 902 and the first circular plate 906 to reverse, the insertion rod 907 will eventually press against the inner wall of the slot 911, thereby driving the second circular plate 910 and the movable rod 703 to rotate together.

[0039] Furthermore, a control panel 10 is fixedly connected to the outside of the box 1, the motor 901 is electrically connected to the control panel 10, the electrical equipment is powered by an external power supply, such as AC power, and the start, stop, and forward and reverse rotation of the motor 901 are controlled by the control panel 10.

[0040] The use steps of the present invention are as follows: when the present construction waste screening and processing equipment is in use, the motor 901 is started to rotate forward, and the motor 901 drives the second rotating shaft 3 to rotate through the first pulley 903, the second pulley 904 and the transmission belt 905, and the second rotating shaft 3 drives the first rotating shaft 2 to rotate through the mutually meshing first gear 5 and the second gear 6, and the first rotating shaft 2 and the second rotating shaft 3 finally drive the crushing roller 4 to crush the construction waste, and the crushed construction waste falls onto the screening plate 705 in the screening box 701, and when the second gear 6 rotates, it drives the slide bar 803 to squeeze the inner wall of the slide groove 802, thereby driving the swing plate 801 to swing back and forth, and the swing plate 801 then drives the fourth rotating shaft 805 to rotate through the outer gear ring 804 and the third gear 807, and when the fourth rotating shaft 805 rotates, it drives the inclined cylinder 806 to squeeze the convex rod 808 on one side of the screening box 701, thereby driving the screening box 701 to move in the direction close to the first spring 809, and at the same time, the first spring 809 The first spring 809 is compressed and the elastic force of the first spring 809 is cooperated to make the screening box 701 shake back and forth in the box body 1. Finally, the smaller construction waste enters the inner side of the screening plate 705 through the screening hole 706 on the screening plate 705, slides down through the partition plate 707 inside the screening plate 705, and finally the construction waste continues to fall through the through slot 708 on the third rotating shaft 704, thereby completing the screening, and starting the motor 901 to reverse. At this time, the plug rod 907 on the first circular plate 906 is engaged with the slot 911 on the second circular plate 910, thereby driving the movable rod 703 to rotate, and the movable rod 703 drives the rotating rod 709 to rotate through the worm 711 and the worm gear 710, and finally the rotating rod 709 drives the third rotating shaft 704 to rotate, which can not only adjust the position of the screening plate 705 on the third rotating shaft 704, select different screening holes 706, and screen construction waste of different sizes, but also can discharge the larger construction waste screened out, which is convenient and labor-saving to operate.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A construction waste screening and processing device, comprising a housing (1), wherein a first rotating shaft (2) is rotatably connected inside the housing (1), a second rotating shaft (3) is rotatably connected inside the housing (1) and located on one side of the first rotating shaft (2), a crushing roller (4) is fixedly connected to the outside of the first rotating shaft (2) and the second rotating shaft (3), a first gear (5) is fixedly connected to the outside of the first rotating shaft (2), a second gear (6) is fixedly connected to the outside of the second rotating shaft (3), and the second gear (6) is meshingly connected to the first gear (5), characterized in that: A screening mechanism (7) is arranged inside the box (1) and below the crushing roller (4); a transmission mechanism (8) is arranged outside the box (1) and on one side of the second gear (6); a power mechanism (9) is arranged on the side of the outside of the box (1) away from the transmission mechanism (8); the screening mechanism (7) comprises a screening box (701); a fixed rod (702) is slidably connected to one side of the screening box (701); the fixed rod (702) is fixedly connected to the box (1); a movable rod (703) is movably connected to the other side of the screening box (701); the movable rod (703) vertically penetrates the box (1) and extends to the outside of the box (1); the movable rod (703) is rotatably connected to the box (1). The third rotating shaft (704) is internally rotatably connected to the screening box (701), and the third rotating shaft (704) is externally fixedly connected to a screening plate (705), and the screening plate (705) is of a U-shaped structure. There are three screening plates (705), and the three screening plates (705) are symmetrically distributed. Screening holes (706) are provided on the corresponding two sides of the screening plate (705). The apertures of the screening holes 706 of the same screening plate 705 are different, but the apertures of the screening holes 706 between two adjacent screening plates 705 are the same, so that the screening box 701 and the screening plates 705 can screen out three different sizes of crushed construction waste. The internal fixed connection of the screening plate (705) A partition plate (707) is connected, the partition plate (707) is fixedly connected to the third rotating shaft (704), the interior of the third rotating shaft (704) and the corresponding two sides of the partition plate (707) are provided with through grooves (708), the through grooves (708) are communicated with the interior of the third rotating shaft (704), one end of the third rotating shaft (704) is fixedly connected to a rotating rod (709), the rotating rod (709) vertically penetrates the screening box (701) and extends to the outside of the screening box (701), the rotating rod (709) is rotatably connected to the screening box (701), the outer end of the rotating rod (709) away from the third rotating shaft (704) is fixedly connected to a worm gear (710), the outer end of the movable rod (703) A worm (711) is sleeved on the movable rod 703, and the part of the movable rod 703 on which the worm 711 is sleeved has a square cross-section. The worm (711) is meshingly connected with the worm wheel (710), and the movable rod (703) is slidably connected with the worm (711). A fixed plate (712) is sleeved on the outside of the worm (711), and the fixed plate (712) is fixedly connected with the screening box (701). The worm (711) is rotatably connected with the fixed plate (712). The transmission mechanism (8) includes a swing plate (801), and the swing plate (801) is rotatably connected with the box body (1). A slide groove (802) is provided inside the swing plate (801), and a slide rod (803) is slidably connected inside the slide groove (802).The sliding rod (803) is fixedly connected to the second gear (6); the outer part of the swing plate (801) is fixedly connected to an outer gear ring (804); the inner part of the housing (1) and above the outer gear ring (804) is rotatably connected to a fourth rotating shaft (805); one end of the fourth rotating shaft (805) is fixedly connected to an inclined cylinder (806); the other end of the fourth rotating shaft (805) is fixedly connected to a third gear (807); the third gear (807) is meshingly connected to the outer gear ring (804); the outer part of the screening box (701) is fixedly connected to a cam The convex rod (808) is used in conjunction with the inclined cylinder (806); the fixed rod (702) and the movable rod (703) are sleeved with a first spring (809) outside and located between the screening box (701) and the box body (1); the power mechanism (9) comprises a motor (901); the motor (901) is fixedly connected to the box body (1); the output end of the motor (901) is fixedly connected to a fifth rotating shaft (902); the outside of the fifth rotating shaft (902) is fixedly connected to a first pulley (903); the second rotating shaft (3) The outside of the fifth rotating shaft (902) is fixedly connected to a second pulley (904), the second pulley (904) and the first pulley (903) are connected to each other via a transmission belt (905), the outside of the fifth rotating shaft (902) away from the motor (901) is fixedly connected to a first circular plate (906), the inside of the first circular plate (906) is slidably connected to an insertion rod (907), the insertion rod 907 on the first circular plate 906 can always be located in a slot 911 on the second circular plate 910, the slot 911 is a ramp structure, and the insertion rod (907) has two The two insertion rods (907) are symmetrically distributed, the outside of the insertion rods (907) is fixedly connected to a baffle (908), the outside of the insertion rods (907) and between the first circular plate (906) and the baffle (908) is sleeved with a second spring (909), the outside of the movable rod (703) is fixedly connected to a second circular plate (910) at one end close to the first circular plate (906), and the inside of the second circular plate (910) is provided with a slot (911) on a side away from the movable rod (703), and the slot (911) is used in conjunction with the insertion rod (907).

2. The construction waste screening and processing equipment according to claim 1 is characterized in that: The top of the screening box (701) is provided with a feed inlet (713), and the bottom of the screening box (701) is provided with a discharge outlet (714).

3. The construction waste screening and processing equipment according to claim 1 is characterized in that: A control panel (10) is fixedly connected to the outside of the box (1), and the motor (901) is electrically connected to the control panel (10).

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