Automatic screening device for construction waste with dust removal function and use method thereof

Abstract

The present invention discloses an automatic screening device for construction waste with a dust removal function and a method for using the same. The screening device comprises a base, a U-shaped plate and a dust removal component are provided on the base, a processing box is provided on the U-shaped plate, the dust removal component comprises a dust removal box, a rotating member, a dust removal member and a fastener, a screening component is provided in the U-shaped plate, the screening component comprises a first screening frame and a second screening frame, the first screening frame and the second screening frame have opposite rotation directions, a limit plate is provided in the dust removal box, a T-shaped rod is provided in the dust removal box for sliding, a first straight groove is provided on the T-shaped rod, a mounting rod is provided at one end of the rotating member, a connecting groove distributed in an array is provided on the mounting rod, a dust removal bag distributed in an array is provided on the dust removal member, the dust removal bag is connected to the connecting groove, a rotating block is provided on the fastener, a baffle distributed in an array is provided at one end of the rotating block, and a recovery box is provided at the other end. In the screening device of the present invention, the processing box is crushed, the first screening frame and the second screening frame are intermittently screened, and the dust removal bag is continuously dusted.

Description

Technical Field

[0001] The invention relates to the technical field of garbage screening, in particular to an automatic screening device for construction garbage with a dust removal function and a use method thereof. Background Art

[0002] Construction waste refers to the rubble, abandoned soil, abandoned materials, silt and other waste generated during the construction, laying, demolition and repair of various buildings, structures, pipelines, etc. by construction units or individuals. Construction waste refers to the general term for rubble, waste concrete, waste bricks and stones and other waste generated in the production activities of the construction industry such as demolition, construction, decoration and repair.

[0003] The existing garbage screening has a long material feeding interval, low working efficiency, troublesome to collect and filter the dust generated by screening, complicated dust removal operation of filter bags, and inconvenient dust collection. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic screening device for construction waste with a dust removal function and a method of using the same, so as to solve the problems of low efficiency in existing waste screening and troublesome dust removal operations.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] The invention discloses an automatic screening device for construction waste with a dust removal function. The screening device comprises a base, a U-shaped plate and a dust removal component are arranged on the base, a processing box is arranged on the U-shaped plate, and the dust removal component comprises a dust removal box, a rotating part, a dust removal part and a fastener.

[0007] A screening component is arranged inside the U-shaped plate. The screening component comprises a first screening frame and a second screening frame. The first screening frame and the second screening frame rotate in opposite directions.

[0008] A limiting plate is arranged in the dust removal box, a T-shaped rod is slidably arranged in the dust removal box, and a first straight groove is arranged on the T-shaped rod.

[0009] A mounting rod is provided at one end of the rotating member, and connecting grooves distributed in an array are provided on the mounting rod. A dust removal bag is provided on the dust removal member and connected to the connecting grooves. A rotating block is provided on the fastener, and a baffle distributed in an array is provided at one end of the rotating block, and a recovery box is provided at the other end.

[0010] Furthermore, the base is provided with a vertical plate, the base is provided with symmetrically distributed support rods, one side of the vertical plate is provided with a slide groove, the vertical plate is provided with a through groove, a moving block is provided in the slide groove, a swing rod is rotatably provided on one side of the moving block, and a slider is provided on one side of the moving block.

[0011] A first rack is provided at one end of the moving block, a first gear is provided on the base, an array of arc rods are provided on the base, an arc guide groove is provided at one end of the arc rod, a plug hole is provided on the base, the slider cooperates with the slide groove, and the first gear cooperates with the first rack.

[0012] Furthermore, a collecting box is slidably provided on one side of the U-shaped plate, a second gear is provided on the other side, and a connecting plate is provided on the U-shaped plate.

[0013] A dust suction groove is arranged on one side of the processing box, a cover plate is arranged on the processing box, a crushing roller is rotatably arranged in the processing box, a symmetrically distributed lower hopper is arranged in the processing box, a screening net is arranged on the lower hopper, a partition is arranged in the processing box, and a mounting plate is arranged in the partition.

[0014] A symmetrically distributed connecting rod is rotatably provided on one side of the mounting plate, a sealing plate is provided at one end of the connecting rod, and a fixing plate is provided at the other end. A vertical rod is provided on the fixing plate, and a moving block slidably connected with the vertical rod is slidably provided in the interlayer.

[0015] Furthermore, a rotating shaft is provided at one end of the first screening frame, and the rotating shaft is rotatably connected to the connecting plate. Arc plates are provided at both ends of the first screening frame, and a plurality of adjusting rods are provided between the arc plates. The adjusting rods are provided with arc grooves distributed in an array, and the first sieve holes and the second sieve holes are provided in the arc grooves.

[0016] The first sieve hole is perpendicular to the second sieve hole, the diameter of the first sieve hole is larger than the second sieve hole, a connecting hole is provided on the adjusting rod, an arc-shaped rack is provided on one side of the first screening frame, and an arc-shaped screw for fixing the adjusting rod is provided on the first screening frame.

[0017] The arc-shaped rack matches the arc-shaped guide groove.

[0018] Furthermore, the second screening frame has the same structure as the first screening frame, the difference being that a connecting block is provided on the second screening frame, one end of the rocker arm is rotatably connected to the connecting block, and the second gear is located between the arc-shaped rack on the first screening frame and the arc-shaped rack on the second screening frame.

[0019] The arc-shaped rack cooperates with the second gear.

[0020] Furthermore, the dust removal box is provided with a dust inlet hole, a circular hole is provided in the dust removal box, a second straight groove is provided on the T-shaped rod, the first straight groove and the second straight groove are vertically arranged, a symmetrically distributed second rack is provided in the second straight groove, and an incomplete gear is provided for rotation in the dust removal box.

[0021] The incomplete gear cooperates with the second rack.

[0022] Furthermore, a first limiting groove is provided on one side of the rotating member, a fan is provided on the rotating member, an arc plate is provided at one end of the rotating member, engaging grooves are provided between the arc plates, and an external thread is provided on the mounting rod.

[0023] The first limiting groove matches the circular hole.

[0024] Furthermore, the dust removing piece is provided with a through hole, a through groove is provided on one side of the dust removing bag, the through groove connects the through hole and the connecting groove, an array of clamping plates are provided on one side of the dust removing piece, an air inlet is provided on the clamping plate, and a driving rod is provided at one end of the dust removing piece.

[0025] The clamping plate matches with the clamping groove, and the driving rod matches with the first straight groove.

[0026] Furthermore, the fastener includes a nut, the recovery box is fastened to the limiting plate, and the rotating block is provided with a dust collecting hole connected to the recovery box.

[0027] The nut cooperates with the external thread.

[0028] A method for using an automatic screening device for construction waste with a dust removal function, the method comprising the following steps:

[0029] S1. Loading

[0030] Pour the construction solid waste into the treatment box, close the cover, rotate the crushing roller to crush the waste, and the crushed waste is filtered through the screening net.

[0031] S2, unloading

[0032] The sealing plate is controlled to move and the garbage is poured into the first screening frame and the second screening frame respectively.

[0033] S3. Screening

[0034] The first gear is rotated back and forth to control the moving block to move back and forth, and the second screening frame is pushed to rotate. Through the transmission of the second gear, the first screening frame is rotated in the opposite direction to screen the garbage, and the screened garbage particles fall into the collection box.

[0035] S4. Vacuuming

[0036] The fan rotates to suck the dusty gas generated by the screening into the rotating parts and into the dust bag to filter the dust. The clean gas passes through the dust bag and is discharged.

[0037] S5. Collect dust

[0038] The incomplete gear is rotated, the T-shaped rod is moved back and forth, the dust removal part is rotated, and the air blows the dust bag to blow the dust in the dust bag down. The dust enters the recovery box through the connecting groove for collection.

[0039] Beneficial effects of the present invention:

[0040] 1. The screening device of the present invention, the processing box crushes the garbage, the first screening frame and the second screening frame move back and forth, intermittent screening, improve work efficiency, and the dust removal box is connected to the processing box to absorb dust;

[0041] 2. The screening device of the present invention uses a dust removal box to filter dust, and the dust removal element rotates to clean the dust bag. The dust falls into the recovery box, and the dust is collected to keep the dust bag clean, continuously remove dust, and has a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The present invention will be further described below in conjunction with the accompanying drawings.

[0043] Figure 1 It is a schematic diagram of the structure of the screening device of the present invention;

[0044] Figure 2 It is a schematic diagram of the explosion structure of the dust removal box of the present invention;

[0045] Figure 3 It is a schematic diagram of the base structure of the present invention;

[0046] Figure 4 It is a schematic diagram of the base structure of the present invention;

[0047] Figure 5 It is a schematic diagram of the U-shaped plate structure of the present invention;

[0048] Figure 6 It is a schematic diagram of the cross-sectional structure of the U-shaped plate of the present invention;

[0049] Figure 7 It is a schematic diagram of the exploded structure of the first screening frame of the present invention;

[0050] Figure 8 It is a schematic diagram of the structure of the second screening frame of the present invention;

[0051] Fig. 9 It is a schematic diagram of the structure of the dust removal box of the present invention;

[0052] Fig.10 It is a schematic diagram of the structure of the rotating part of the present invention;

[0053] Fig.11 It is a schematic diagram of the structure of the dust removal component of the present invention;

[0054] Fig.12 It is a schematic diagram of the explosion structure of the fastener of the present invention. DETAILED DESCRIPTION

[0055] 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.

[0056] An automatic screening device for construction waste with dust removal function, the screening device comprises a base 1, such as Figure 1 , Figure 2 As shown, a U-shaped plate 2 is fastened to the base 1, a processing box 3 is fastened to the U-shaped plate 2, a dust removal box 4 is provided on one side of the U-shaped plate 2, a rotating part 5 is provided in the dust removal box 4, a dust removal part 6 is provided on the rotating part 5, and a fastener 7 is provided on the dust removal part 6.

[0057] like Figure 3 , Figure 4 As shown, a vertical plate 11 is fastened to the base 1, and symmetrically distributed support rods 14 are fastened to the base 1, an open groove 140 is provided on one side of the support rod 14, and an open groove 140 is also provided on one side of the vertical plate 11. A through groove 12 is provided on the vertical plate 11, and a slide groove 13 is provided on the other side of the vertical plate 11. A moving block 18 is provided in the slide groove 13, and a swing rod 181 is rotatably provided on one side of the moving block 18, and a shift block 19 is fixedly provided on one end of the swing rod 181, and a slider 183 is provided on one side of the moving block 18, and the slider 183 is slidably matched with the slide groove 13.

[0058] The moving block 18 blocks the sealing through groove 12, a first rack 182 is provided at one end of the moving block 18, a first gear 15 is provided on the base 1, a first motor 10 is fixedly provided on the base 1, an output end of the first motor 10 is fastened to the first gear 15, the first gear 15 cooperates with the first rack 182, an array of arc rods 17 are fastened on the base 1, an arc guide groove 171 is provided at one end of the arc rod 17, and a socket 100 is provided on the base 1.

[0059] like Figure 5 , Figure 6 As shown, a collecting box 20 is provided on one side of the U-shaped plate 2, and the collecting box 20 is slidably connected to the U-shaped plate 2. The collecting box 20 can be pulled out to facilitate waste recycling. A second gear 22 is rotatably provided on the other side of the U-shaped plate 2. A connecting plate 23 is fixed on the U-shaped plate 2, and the collecting box 20 is located below the connecting plate 23.

[0060] A first motor 30 is provided on one side of the processing box 3, and a second motor 300 and a dust suction groove 303 are provided on the other side. A cover plate 31 is rotatably provided on the processing box 3, a circular plate 32 is rotatably provided inside the processing box 3, and an array of crushing rollers 33 are rotatably provided on the circular plate 32. The output end of the first motor 30 is fastened to the circular plate 32. A symmetrically distributed lower hopper 34 is provided inside the processing box 3, a screening net 35 is fastened on the lower hopper 34, and the lower hopper 34 is located below the crushing roller 33. A partition 36 is provided inside the processing box 3, and a mounting plate 37 is fixed inside the partition 36.

[0061] A symmetrically distributed connecting rod 371 is rotatably provided on one side of the mounting plate 37, one end of the connecting rod 371 is connected to a sealing plate 372, and the other end is fastened with a fixing plate 373, and a vertical rod 38 is fastened on the fixing plate 373. A lead screw 302 is rotatably provided in the partition 36, and a guide rod 301 is fixed in the partition 36. The output end of the second motor 300 is fastenedly connected to the lead screw 302, and a moving block 39 is slidably provided on the guide rod 301, and the moving block 39 cooperates with the lead screw 302, and the moving block 39 is slidably connected to the vertical rod 38.

[0062] The lead screw 302 is rotated to make the moving block 39 push the vertical rod 38 to move horizontally, thereby driving the sealing plate 372 to move, closing a material discharge hopper 34, and discharging materials intermittently.

[0063] like Figure 7 , Figure 8 As shown, the U-shaped plate 2 cooperates with the open groove 140, and a first screening frame 8 and a second screening frame 9 are provided in the U-shaped plate 2. A rotating shaft 81 is provided at one end of the first screening frame 8, and the rotating shaft 81 is rotatably connected to the connecting plate 23. Arc plates 84 are fixed at both ends of the first screening frame 8, and a through hole 82 is provided on the first screening frame 8. Array-distributed adjustment rods 86 are fastened between the arc plates 84, and array-distributed arc grooves 87 are provided on the adjusting rods 86. An array-distributed first sieve hole 88 is provided in one arc groove 87, and an array-distributed second sieve hole 89 is provided in the other arc groove 87.

[0064] The first sieve hole 88 and the second sieve hole 89 are perpendicular to each other. The diameter of the first sieve hole 88 is larger than that of the second sieve hole 89. A connecting hole 80 is provided on the adjusting rod 86. An arc-shaped rack 85 is fixedly provided on one side of the first screening frame 8. The arc-shaped rack 85 cooperates with the arc-shaped guide groove 171. An arc-shaped screw 83 is fixedly provided on the first screening frame 8. A limiting plate 831 is provided at one end of the arc-shaped screw 83, and the other end passes through the connecting hole 80 and the through hole 82 in sequence and is fixed with a nut, so that the adjusting rod 86 cooperates to form an arc-shaped screen.

[0065] The second screening frame 9 has the same structure as the first screening frame 8, the difference being that a connecting block 91 is provided on the second screening frame 9, the connecting block 91 is rotatably connected to the shift block 19, the arc-shaped rack 85 cooperates with the second gear 22, the second gear 22 is located between the arc-shaped rack 85 on the first screening frame 8 and the arc-shaped rack 85 on the second screening frame 9, and the first screening frame 8 and the second screening frame 9 have opposite rotation directions.

[0066] like Fig. 9 As shown, the dust collecting box 4 is provided with a dust inlet hole 41, which is connected to the dust suction groove 303, a circular hole 42 is provided in the dust collecting box 4, a limiting plate 43 is fixedly provided in the dust collecting box 4, a sliding rod 44 is fixedly provided in the dust collecting box 4, a T-shaped rod 45 is slidably provided on the sliding rod 44, a first straight groove 46 and a second straight groove 47 are provided on the T-shaped rod 45, the first straight groove 46 is parallel to the limiting plate 43, and the first straight groove 46 and the second straight groove 47 are vertically arranged.

[0067] A symmetrically distributed second rack 48 is provided in the second straight groove 47, a transverse plate 49 is fixedly provided in the dust removal box 4, an incomplete gear 40 is provided on the transverse plate 49, a third motor 491 is fixedly provided on one side of the transverse plate 49, an output end of the third motor 491 is fastened to the incomplete gear 40, the incomplete gear 40 cooperates with the second rack 48, the third motor 491 rotates the incomplete gear 40, so that the T-shaped rod 45 slides back and forth on the slide rod 44.

[0068] like Fig.10 As shown, a first limiting groove 50 is provided on one side of the rotating member 5, a fan 51 is provided on the rotating member 5, a fourth motor 52 is fixedly provided on the rotating member 5, and the output end of the fourth motor 52 is fastened to the fan 51, an arc plate 53 is fixedly provided at one end of the rotating member 5, and a snap-fit ​​groove 54 is provided between the arc plates 53, and a mounting rod 55 is fixedly provided at one end of the rotating member 5. The mounting rod 55 is a hollow structure, and an external thread 56 is provided on the mounting rod 55. The mounting rod 55 is provided with an array of connecting grooves 57, and the connecting grooves 57 are connected to each other. The first limiting groove 50 cooperates with the circular hole 42.

[0069] like Fig.11 As shown, the dust collecting member 6 is provided with dust collecting bags 61 distributed in an array, a through hole 64 is provided on the dust collecting member 6, the mounting rod 55 is located in the through hole 64, a through groove 63 is provided on one side of the dust collecting bag 61, the through groove 63 is communicated with the through hole 64, the communicating groove 57 is communicated with the through groove 63, the dust in the dust collecting bag 61 enters the communicating groove 57 through the through groove 63, a clamping plate 62 distributed in an array is fixedly provided on one side of the dust collecting member 6, an air inlet 66 is provided on the clamping plate 62, the clamping plate 62 cooperates with the clamping groove 54 to seal the rotating member 5, a driving rod 65 is fixedly provided at one end of the dust collecting member 6, the driving rod 65 is slidably matched with the first straight groove 46.

[0070] like Fig.12As shown, the fastener 7 includes a nut 71, which cooperates with the external thread 56. A hexagonal column 68 is fixedly provided on one side of the nut 71. A rotating hole 72 is provided on the fastener 7. A rotating block 73 is provided in the rotating hole 72. A second limiting groove 74 is provided on one side of the rotating block 73. The second limiting groove 74 is rotatably matched with the rotating hole 72. An array-distributed baffle 76 is fixedly provided at one end of the rotating block 73, and a recovery box 75 is provided at the other end. The recovery box 75 is fastened to the limiting plate 43. The baffle 76 is located in the mounting rod 55 and is used to seal the connecting groove 57. A dust collecting hole 77 is provided on the rotating block 73, and the dust collecting hole 77 is connected to the recovery box 75.

[0071] A method for using an automatic screening device for construction waste with a dust removal function, the method comprising the following steps:

[0072] S1. Loading

[0073] Pour the construction solid waste into the processing box 3, close the cover 31, rotate the crushing roller 33 to crush the waste, and the crushed waste is filtered through the screening net 35.

[0074] S2, unloading

[0075] The sealing plate 372 is controlled to move and the garbage is poured into the first screening frame 8 and the second screening frame 9 respectively.

[0076] S3. Screening

[0077] The first gear 15 is rotated back and forth to control the moving block 18 to move back and forth, pushing the second screening frame 9 to rotate, and the first screening frame 8 is rotated in the opposite direction through the transmission of the second gear 22 to screen the garbage, and the screened garbage particles fall into the collection box 20.

[0078] S4. Vacuuming

[0079] The fan 51 is rotated to suck the dusty gas generated by screening into the rotating member 5 and into the dust removal bag 61 to filter the dust, and the clean gas passes through the dust removal bag 61 and is discharged.

[0080] S5. Collect dust

[0081] The incomplete gear 40 is rotated to reciprocate the T-shaped rod 45, and the dust removal member 6 is rotated. The air blows the dust bag 61 to blow the dust in the dust bag 61 off. The dust enters the recovery box 75 through the connecting groove 57 and is collected.

[0082] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0083] 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 to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An automatic screening device for construction waste with a dust removal function, the screening device comprising a base (1), characterized in that: The base (1) is provided with a U-shaped plate (2) and a dust removal assembly, the U-shaped plate (2) is provided with a processing box (3), and the dust removal assembly comprises a dust removal box (4), a rotating part (5), a dust removal part (6) and a fastener (7); A screening component is provided inside the U-shaped plate (2), the screening component comprising a first screening frame (8) and a second screening frame (9), and the first screening frame (8) and the second screening frame (9) rotate in opposite directions; A limit plate (43) is provided in the dust removal box (4), a T-shaped rod (45) is slidably provided in the dust removal box (4), and a first straight groove (46) is provided on the T-shaped rod (45); A mounting rod (55) is provided at one end of the rotating member (5), and a connecting groove (57) is provided on the mounting rod (55). A dust removal bag (61) is provided on the dust removal member (6), and the dust removal bag (61) is communicated with the connecting groove (57). A rotating block (73) is provided on the fastener (7), and a baffle (76) is provided on one end of the rotating block (73), and a recovery box (75) is provided on the other end. A rotating shaft (81) is provided at one end of the first screening frame (8), and the rotating shaft (81) is rotatably connected to the connecting plate (23). Arc plates (84) are provided at both ends of the first screening frame (8), and a plurality of adjusting rods (86) are provided between the arc plates (84). The adjusting rods (86) are provided with arc grooves (87) distributed in an array, and the arc grooves (87) are provided with first sieve holes (88) and second sieve holes (89); The first sieve hole (88) and the second sieve hole (89) are perpendicular to each other, the diameter of the first sieve hole (88) is larger than that of the second sieve hole (89), a connecting hole (80) is provided on the adjusting rod (86), an arc-shaped rack (85) is provided on one side of the first screening frame (8), and an arc-shaped screw rod (83) for fixing the adjusting rod (86) is provided on the first screening frame (8); The arc-shaped rack (85) cooperates with the arc-shaped guide groove (171); The second screening frame (9) has the same structure as the first screening frame (8), the difference being that a connecting block (91) is provided on the second screening frame (9), one end of the swing rod (181) is rotatably connected to the connecting block (91), and the second gear (22) is located between the arc-shaped rack (85) on the first screening frame (8) and the arc-shaped rack (85) on the second screening frame (9); The arc-shaped rack (85) cooperates with the second gear (22); A first limiting groove (50) is provided on one side of the rotating member (5), a fan (51) is provided on the rotating member (5), an arc-shaped plate (53) is provided on one end of the rotating member (5), a locking groove (54) is provided between the arc-shaped plates (53), and an external thread (56) is provided on the mounting rod (55); The first limiting groove (50) cooperates with the circular hole (42); The dust removal member (6) is provided with a through hole (64), a through groove (63) is provided on one side of the dust removal bag (61), the through groove (63) is connected with the through hole (64) and the connecting groove (57), an array of clamping plates (62) are provided on one side of the dust removal member (6), an air inlet (66) is provided on the clamping plate (62), and a driving rod (65) is provided at one end of the dust removal member (6); The engaging plate (62) cooperates with the engaging groove (54), and the driving rod (65) cooperates with the first straight groove (46); The fastener (7) comprises a nut (71), the recovery box (75) is fastened to the limiting plate (43), and the rotating block (73) is provided with a dust collecting hole (77) which is in communication with the recovery box (75); The nut (71) cooperates with the external thread (56).

2. The automatic screening device for construction waste with dust removal function according to claim 1 is characterized in that: The base (1) is provided with a vertical plate (11), the base (1) is provided with symmetrically distributed support rods (14), one side of the vertical plate (11) is provided with a slide groove (13), the vertical plate (11) is provided with a through groove (12), a moving block (18) is provided in the slide groove (13), one side of the moving block (18) is rotatably provided with a swing rod (181), and one side of the moving block (18) is provided with a slider (183); A first rack (182) is provided at one end of the moving block (18), a first gear (15) is provided on the base (1), an array of arc-shaped rods (17) are provided on the base (1), an arc-shaped guide groove (171) is provided at one end of the arc-shaped rod (17), a plug hole (100) is provided on the base (1), a slider (183) cooperates with the slide groove (13), and the first gear (15) cooperates with the first rack (182).

3. The automatic screening device for construction waste with dust removal function according to claim 2 is characterized in that: A collecting box (20) is slidably provided on one side of the U-shaped plate (2), a second gear (22) is provided on the other side, and a connecting plate (23) is provided on the U-shaped plate (2); A dust suction groove (303) is provided on one side of the processing box (3), a cover plate (31) is provided on the processing box (3), a crushing roller (33) is rotatably provided in the processing box (3), a symmetrically distributed lower hopper (34) is provided in the processing box (3), a screening net (35) is provided on the lower hopper (34), a partition (36) is provided in the processing box (3), and a mounting plate (37) is provided in the partition (36); A symmetrically distributed connecting rod (371) is rotatably provided on one side of the mounting plate (37), a sealing plate (372) is provided at one end of the connecting rod (371), and a fixing plate (373) is provided at the other end, a vertical rod (38) is provided on the fixing plate (373), and a moving block (39) slidably connected to the vertical rod (38) is slidably provided in the partition (36).

4. The automatic screening device for construction waste with dust removal function according to claim 3 is characterized in that: The dust removal box (4) is provided with a dust inlet hole (41), a circular hole (42) is provided in the dust removal box (4), a second straight groove (47) is provided on the T-shaped rod (45), the first straight groove (46) and the second straight groove (47) are arranged vertically, a symmetrically distributed second rack (48) is provided in the second straight groove (47), and an incomplete gear (40) is rotatably provided in the dust removal box (4); The incomplete gear (40) cooperates with the second rack (48).

5. The method for using the automatic screening device for construction waste with dust removal function according to claim 4 is characterized in that: The method of use comprises the following steps: S1. Loading Pour the construction solid waste into the treatment box (3), close the cover (31), rotate the crushing roller (33) to crush the waste, and filter the crushed waste through the screening net (35); S2, unloading Controlling the sealing plate (372) to move, and pouring the garbage into the first screening frame (8) and the second screening frame (9) respectively; S3. Screening The first gear (15) is rotated back and forth to control the moving block (18) to move back and forth, thereby driving the second screening frame (9) to rotate, and the first screening frame (8) is driven by the second gear (22) to rotate in the opposite direction to screen the garbage, and the screened garbage particles fall into the collection box (20); S4. Vacuuming The fan (51) is rotated to suck the dusty gas generated by screening into the rotating member (5), and then into the dust removal bag (61) to filter the dust, and the clean gas passes through the dust removal bag (61) and is discharged; S5. Collect dust The incomplete gear (40) is rotated to reciprocate the T-shaped rod (45), rotate the dust removal member (6), and the air blows the dust removal bag (61) to blow the dust in the dust removal bag (61) down, and the dust enters the recovery box (75) through the connecting groove (57) for collection.

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