An air circulation type dustproof bag breaking drum primary screening equipment

Abstract

The present application relates to the field of garbage screening, in particular to a kind of air inner circulation dustproof bag breaking drum primary screening equipment. Including base, the top of the base is equipped with support seat;The top of the support seat is equipped with sealing cylinder body;The one end of the sealing cylinder body is equipped with feeding mechanism, and the other end is equipped with discharging mechanism;The screening mechanism is equipped in the sealing cylinder body;Self-adapting beating mechanism is equipped in the screening mechanism.The present application controls feeding mechanism to open feeding channel, and simultaneously starts circulating air pump, circulating air pump extracts air in concentration cover and sprays air flow to produce air wall through feeding mechanism, blocks dust produced in the screening process of decoration garbage from escaping to the outside of primary screening equipment, simultaneously, feeding mechanism can change air flow direction and guide air flow into screening mechanism, to realize air inner circulation of primary screening equipment, avoid dust pollution to air of working area, not only improve environmental protection, but also improve the use safety of primary screening equipment.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of garbage screening, and particularly relates to an air internal circulation dustproof bag breaking drum primary screening equipment. BACKGROUND

[0002] Construction waste is a kind of recyclable resource, and has complex components. In addition to main waste such as bricks, stones and concrete, there are also a large amount of bamboo, wood, fabric and plastic high-calorific-value light materials.

[0003] Through retrieval, in the prior art, a construction waste aggregate screening equipment with light material separation function is disclosed in Chinese Patent Publication No. CN116213259B, published on September 22, 2023, which belongs to the technical field of garbage screening. In order to overcome the shortcomings that the light materials are not completely separated due to the light materials being buried in the aggregate, and the quality of the aggregate is affected. The invention comprises a support frame, the support frame is slidably connected with a screening drum, the screening drum is composed of a first screen drum, a second screen drum, a third screen drum and a fourth screen drum, the support frame is provided with a material distribution assembly, the support frame is fixedly connected with a discharge pipe, the discharge pipe is slidably connected with a suction element, the support frame is fixedly connected with a negative pressure air bellow, and the negative pressure air bellow is located above the screening drum. The first screen drum and the second screen drum are used to screen the particulate matter and the powder, the third screen drum and the fourth screen drum are used to screen the aggregate, so that the light materials are separated while the aggregate is screened, and the operation is simple; the material distribution assembly lifts the aggregate and the light materials, the aggregate and the light materials are flattened, and the material distribution assembly cooperates with the negative pressure air bellow to separate the light materials, so that the light materials are more completely separated.

[0004] However, the screening equipment still has the following defects:

[0005] For the bamboo, wood, fabric and plastic high-calorific-value light materials generated in the decoration waste pretreatment and separation process, the existing screening equipment usually generates a large amount of dust during the treatment of the light materials of the decoration waste, pollutes the air of the working area, causes safety hazards, lacks environmental protection, and reduces the use safety. SUMMARY

[0006] In view of the above problems, the present application provides an air internal circulation dustproof bag breaking drum primary screening equipment, which comprises a base, a support seat is arranged above the base, and a sealing cylinder body is arranged at the top of the support seat.

[0007] One end of the sealing cylinder body is provided with a feeding mechanism, and the other end is provided with a discharging mechanism; a screening mechanism is arranged in the sealing cylinder body; and a self-adaptive beating mechanism is arranged in the screening mechanism.

[0008] A screening through slot is formed in the bottom of the sealing cylinder body; and a concentration cover is communicated with the bottom of the screening through slot.

[0009] The bottom is provided with a conveying belt; the bottom of the collecting cover is movably attached to the top of the conveying belt; the inner wall of the bottom of the base is provided with a circulating air pump; the input end of the circulating air pump is communicated with the collecting cover, and the output end is communicated with the feeding mechanism;

[0010] The circulating air pump is started to make the air in the equipment flow in a circulating manner, and then the decoration garbage is put into the feeding mechanism.

[0011] Further, the support seat and the base are provided with a protective cover; one end of the base near the feeding mechanism is provided with a first collecting box, and the other end is provided with a second collecting box; the top of the second collecting box is provided with a discharge hose; one end of the discharge hose away from the second collecting box is provided with a first clasp; a first discharge port is formed in the side wall of the base near the feeding mechanism; the first discharge port is communicated with the first collecting box.

[0012] Further, the edge of the bottom of the base is provided with a plurality of groups of receiving boxes; the bottom of each group of receiving boxes is of an open structure; the top of each group of receiving boxes is provided with a group of double-piston rod hydraulic cylinders; one of the output ends of each group of double-piston rod hydraulic cylinders is hingedly connected with the sealing cylinder; the other output end of each group of double-piston rod hydraulic cylinders extends into the receiving box and is drivingly connected with a group of walking wheels.

[0013] Further, the top of the screening channel is provided with a plurality of groups of scrapers at equal intervals; each group of scrapers is movably attached to the outer wall of the screening mechanism; the sealing cylinder is provided with a first circulating channel; one end of the first circulating channel is communicated with the feeding mechanism, and the other end is communicated with the output end of the circulating air pump.

[0014] Further, the feeding mechanism comprises a connecting ring; a fixing ring is sleeved on one end of the connecting ring near the sealing cylinder; the fixing ring is provided with a second sealing plate; a second circulating channel is formed in the side wall of the fixing ring near the sealing cylinder; the second circulating channel is movably communicated with the first circulating channel; the connecting ring is provided with a first air cavity; the first air cavity is communicated with the second circulating channel.

[0015] Further, a rotating ring is movably sleeved on one end of the connecting ring away from the sealing cylinder; the rotating ring is provided with a first sealing plate; the side walls opposite to each other of the first sealing plate and the second sealing plate are movably attached together; the rotating ring is provided with an airflow guide plate; the airflow guide plate is located on the side of the first sealing plate away from the second sealing plate; a plurality of groups of air injection holes are formed in the side wall of the first sealing plate away from the inner wall of the rotating ring at equal intervals; the rotating ring is provided with a second air cavity; the second air cavity is communicated with the first air cavity and the plurality of groups of air injection holes.

[0016] Further, the discharging mechanism comprises a sealing cover, a second discharging port is formed in the bottom inner wall of the sealing cover, a discharging pipe is arranged at the bottom of the sealing cover, a second clamping ring is arranged at the bottom of the discharging pipe, and the second clamping ring is clamped with the first clamping ring.

[0017] Further, the screening mechanism comprises a screening roller, a plurality of groups of screening holes are uniformly distributed and formed in the outer wall of the screening roller, and a plurality of groups of four-edge bag breaking knives are uniformly distributed and arranged on the inner wall of the screening roller.

[0018] Further, the self-adaptive beating mechanism comprises two groups of supporting rods, the two groups of supporting rods are symmetrically arranged at the two ends of the sealing cylinder, a mounting column is arranged between the two groups of sealing cylinders, and a plurality of groups of electric telescopic rods are equidistantly arranged on the outer wall of the mounting column.

[0019] Further, the output end of each group of electric telescopic rods is transmissionally connected with a group of beating plates, a plurality of groups of bag breaking cones are arranged in a rectangular array on the side wall of each group of beating plates away from the mounting column, and a straight pressure sensor is arranged at the connection position of the output end of each group of electric telescopic rods and the corresponding group of beating plates.

[0020] The beneficial effects of the present application are as follows:

[0021] 1. By controlling the feeding mechanism to open the feeding channel and simultaneously starting the circulating air pump, the circulating air pump can extract the air in the concentrating cover and spray the air flow to generate an air wall through the feeding mechanism, so as to block the dust generated in the screening process of the decoration garbage from escaping to the outside of the primary screening equipment, and at the same time, the feeding mechanism can change the direction of the air flow and guide the air flow into the screening mechanism, so as to realize the air internal circulation of the primary screening equipment, avoid dust pollution of the air in the working area, improve the environmental protection, and improve the use safety of the primary screening equipment.

[0022] 2. The air flow is sprayed through a plurality of groups of air injection holes to form an air wall, and the air flow guide plate can guide the air flow into the sealing cylinder, and in the process of the air flow entering the sealing cylinder, the bottom of the fixing ring is cleaned to avoid dust accumulation, and when the primary screening equipment is idle, the first sealing plate can be controlled to rotate to the lower side to close the primary screening equipment, so as to avoid long-term contact of the internal structure with external air, improve the cleaning efficiency of the primary screening equipment, and improve the service life of the primary screening equipment.

[0023] 3. By utilizing the rolling of the screening drum to drive several sets of four-sided bag-breaking knives to cut open the garbage packaging bags and disperse the garbage, several sets of electric telescopic rods will drive several sets of beating plates to reciprocate and beat the garbage, making the particles attached to the garbage more thoroughly separated. In addition, several sets of bag-breaking cones set on the beating plates can create openings in the garbage packaging bags, improving the efficiency of bag breaking. At the same time, pressure sensors are installed at the connection between the electric telescopic rods and the beating plates, which can automatically adapt to the beating work for garbage of different thicknesses by sensing pressure, improving the use effect of the primary screening equipment.

[0024] 4. By controlling the output ends of several sets of double piston rod hydraulic cylinders at the bottom, several sets of walking wheels are driven to extend from the receiving box and touch the ground, thus lifting the primary screening equipment. At this time, the primary screening equipment can be moved at will. At the same time, by controlling the output ends of several sets of double piston rod hydraulic cylinders at the top, the tilt angle of the sealing cylinder can be adjusted, so that different tilt angles can be used when screening different types of waste. This not only improves the ease of use of the primary screening equipment, but also improves the compatibility of the primary screening equipment.

[0025] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the structure of a primary screening device according to an embodiment of the present invention is shown;

[0028] Figure 2 A rear view of the primary screening device according to an embodiment of the present invention is shown.

[0029] Figure 3 A schematic diagram of the structure of the sealing cylinder according to an embodiment of the present invention is shown;

[0030] Figure 4 A cross-sectional schematic diagram of a sealing cylinder according to an embodiment of the present invention is shown;

[0031] Figure 5 A right-side cross-sectional view of a sealing cylinder according to an embodiment of the present invention is shown;

[0032] Figure 6 A structural schematic diagram of a feeding mechanism according to an embodiment of the present application is shown;

[0033] Figure 7 A rear structural schematic diagram of a feeding mechanism according to an embodiment of the present application is shown;

[0034] Figure 8 A sectional view schematic diagram of a feeding mechanism according to an embodiment of the present application is shown;

[0035] Figure 9 A structural schematic diagram of a discharging mechanism according to an embodiment of the present application is shown;

[0036] Figure 10 A structural schematic diagram of a screening mechanism according to an embodiment of the present application is shown;

[0037] Figure 11 A structural schematic diagram of an adaptive beating mechanism according to an embodiment of the present application is shown.

[0038] In the figure: 1, base; 2, support seat; 3, sealing cylinder; 4, protective cover; 5, feeding mechanism; 6, discharging mechanism; 7, first collection box; 8, second collection box; 9, discharging hose; 10, first clasp; 11, screening mechanism; 12, adaptive beating mechanism; 13, first circulating channel; 14, first discharging port; 15, containing box; 16, double-piston rod hydraulic cylinder; 17, walking wheel; 18, concentrating cover; 19, conveying belt; 20, circulating air pump; 21, screening slot; 22, scraper; 501, connecting ring; 502, rotating ring; 503, first sealing plate; 504, air flow guide plate; 505, fixed ring; 506, second sealing plate; 507, second circulating channel; 508, first air cavity; 509, second air cavity; 510, air injection hole; 601, sealing cover; 602, second discharging port; 603, discharging pipe; 604, second clasp; 1101, screening roller; 1102, screen hole; 1103, four-edge bag breaking knife; 1201, support rod; 1202, mounting column; 1203, electric telescopic rod; 1204, beating plate; 1205, bag breaking cone; 1206, pressure sensor. DETAILED DESCRIPTION

[0039] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0040] The embodiment of the present application provides a kind of air inner circulation dustproof type bag breaking drum primary screening equipment, including base 1.Exemplary, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 And Figure 5 The top of the support seat 2 is provided with a sealing cylinder 3;The support seat 2 and the base 1 are provided with a protective cover 4;One end of the sealing cylinder 3 is provided with a feeding mechanism 5, and the other end is provided with a discharging mechanism 6;The base 1 is provided with a first collecting box 7 at one end close to the feeding mechanism 5, and is provided with a second collecting box 8 at the other end;The top of the second collecting box 8 is provided with a discharging hose 9;The end of the discharging hose 9 away from the second collecting box 8 is provided with a first clasp 10;The sealing cylinder 3 is provided with a screening mechanism 11;The screening mechanism 11 is provided with a self-adaptive beating mechanism 12;The sealing cylinder 3 is provided with a first circulating channel 13;The first circulating channel 13 is communicated with the feeding mechanism 5;The sidewall of the base 1 close to the feeding mechanism 5 is provided with a first discharge port 14;The first discharge port 14 is communicated with the first collecting box 7;The bottom inner wall edge of the base 1 is provided with a plurality of groups of storage boxes 15;The bottom of each group of storage boxes 15 is of open structure;The top of each group of storage boxes 15 is provided with a group of double-piston rod hydraulic cylinders 16;One output end of each group of double-piston rod hydraulic cylinders 16 is hinged with the sealing cylinder 3;The other output end of each group of double-piston rod hydraulic cylinders 16 extends into the storage box 15, and is drivingly connected with a group of walking wheels 17;The bottom of the sealing cylinder 3 is provided with a screening through slot 21;The top of the screening through slot 21 is provided with a plurality of groups of scrapers 22 at equal intervals;Each group of scrapers 22 is movably abutted on the outer wall of the screening mechanism 11;The bottom of the screening through slot 21 is communicated with a concentrating cover 18;The base 1 is provided with a conveyor belt 19;The bottom of the concentrating cover 18 is movably attached to the top of the conveyor belt 19;The bottom inner wall of the base 1 is provided with a circulating air pump 20;The input end of the circulating air pump 20 is communicated with the concentrating cover 18, and the output end is communicated with the first circulating channel 13.

[0041] When the primary screening device is working, the feeding mechanism 5 is controlled to open the feeding channel, and the circulating gas pump 20 is started to suck out the air in the concentrating cover 18 and spray the air flow to generate an air wall through the feeding mechanism 5, which blocks the dust generated in the screening process from escaping to the outside of the primary screening device, and at the same time, the feeding mechanism 5 can change the direction of the air flow to guide the air flow into the screening mechanism 11, thereby realizing the air internal circulation of the primary screening device, avoiding dust pollution of the air in the working area, not only improving the environmental protection, but also improving the use safety of the primary screening device. Before using the primary screening device, the output end of the plurality of groups of double piston rod hydraulic cylinders 16 at the bottom drives the plurality of groups of walking wheels 17 to extend from the storage box 15 and touch the ground, and the primary screening device is lifted, at this time, the primary screening device can be moved at will, and the output end of the plurality of groups of double piston rod hydraulic cylinders 16 at the top can adjust the inclination angle of the sealing cylinder 3, so that different inclination angles can be used when screening different garbage, not only improving the use convenience of the primary screening device, but also improving the use compatibility of the primary screening device.

[0042] As shown in Figure 6 , Figure 7 and Figure 8 , the feeding mechanism 5 comprises a connecting ring 501; the connecting ring 501 is sleeved with a fixed ring 505 near one end of the sealing cylinder 3; the fixed ring 505 is provided with a second sealing plate 506; the fixed ring 505 is provided with a second circulating channel 507 on one side wall near the sealing cylinder 3; the second circulating channel 507 is in active communication with the first circulating channel 13; the connecting ring 501 is provided with a first air cavity 508; the first air cavity 508 is in communication with the second circulating channel 507; the connecting ring 501 is movably sleeved with a rotating ring 502 away from the sealing cylinder 3; the rotating ring 502 is provided with a first sealing plate 503; the first sealing plate 503 and the second sealing plate 506 are movably attached together on the opposite side walls; the rotating ring 502 is provided with an air flow guide plate 504; the air flow guide plate 504 is located on the side of the first sealing plate 503 away from the second sealing plate 506; a plurality of groups of air injection holes 510 are equally spaced on the side wall of the first sealing plate 503 away from the inner wall of the rotating ring 502; the rotating ring 502 is provided with a second air cavity 509; the second air cavity 509 is in communication with the first air cavity 508 and the plurality of groups of air injection holes 510.

[0043] When the primary screening device is working, the control rotating ring 502 drives the first sealing plate 503 to rotate to the upper side, so that the feeding channel of the feeding mechanism 5 is exposed, and when feeding, the output gas flow of the circulating gas pump 20 is sequentially sprayed from the air jet holes 510 to form an air wall after passing through the first circulating channel 13, the second circulating channel 507, the first air cavity 508 and the second air cavity 509. The side wall of the gas flow guide plate 504 close to the first sealing plate 503 is arc-shaped, which can guide the gas flow into the sealing cylinder 3, and can clean the bottom of the fixed ring 505 to avoid dust accumulation during the process of the gas flow into the sealing cylinder 3. When the primary screening device is idle, the first sealing plate 503 can be controlled to rotate to the lower side to seal the primary screening device, so as to avoid the internal structure from being in contact with the external air for a long time, thereby improving the cleaning efficiency of the primary screening device and prolonging the service life of the primary screening device.

[0044] As shown in Figure 9 The discharge mechanism 6 includes a sealing cover 601, a second discharge port 602 is formed in the inner wall of the bottom of the sealing cover 601, the bottom of the sealing cover 601 is provided with a discharge pipe 603, the bottom of the discharge pipe 603 is provided with a second clamping ring 604, and the second clamping ring 604 is clamped with the first clamping ring 10.

[0045] When the primary screening device is working, the bamboo, wood, fabric and plastic garbage remove the mixed particles through the screening mechanism 11, and then enters the sealing cover 601, and then enters the second collecting box 8 through the second discharge port 602, the discharge pipe 603 and the discharge hose 9, and is collected. The second collecting box 8 is communicated with the discharge mechanism 6 through the soft discharge hose 9, and the angle adjustment of the sealing cylinder 3 is not affected.

[0046] As shown in Figure 10 The screening mechanism 11 includes a screening roller 1101, a plurality of groups of screen holes 1102 are uniformly distributed on the outer wall of the screening roller 1101, and a plurality of groups of four-edge bag breaking knives 1103 are uniformly distributed on the inner wall of the screening roller 1101. The cross section of the four-edge bag breaking knife 1103 is cruciform.

[0047] As shown in Figure 11As shown, the adaptive beating mechanism 12 comprises two groups of support rods 1201; the two groups of support rods 1201 are symmetrically arranged at the two ends of the sealing cylinder 3; a mounting column 1202 is arranged between the two groups of sealing cylinders 3; a plurality of groups of electric telescopic rods 1203 are arranged on the outer wall of the mounting column 1202 at equal intervals; the output end of each group of electric telescopic rods 1203 is drivingly connected with a group of beating plates 1204; a plurality of groups of bag breaking cones 1205 are arranged on the side wall of each group of beating plates 1204 away from the mounting column 1202 in a rectangular array; and a straight pressure sensor 1206 is arranged at the connection between the output end of each group of electric telescopic rods 1203 and the corresponding group of beating plates 1204.

[0048] When the primary screening device is working, the bamboo, wood, fabric, plastic and other garbage enters the screening drum 1101, the particles attached to the garbage are separated from the garbage in the rotating process of the screening drum 1101, and then enter the collecting cover 18 through the plurality of groups of screen holes 1102 and fall on the conveying belt 19, and because the collecting cover 18 is under negative pressure, the dust floating in the air is also sucked into the collecting cover 18. In the rolling process of the screening drum 1101, the four-pronged bag breaking knife 1103 can cut open the packaging bag of the garbage to scatter the garbage, and the four-pronged bag breaking knife 1103 has four cross-shaped knife edges, which can prevent the garbage from hanging on the bag breaking knife and passing through the screening drum 1101. At the same time, in the garbage screening process, the plurality of groups of electric telescopic rods 1203 drive the plurality of groups of beating plates 1204 to reciprocally beat the garbage, so that the particles attached to the garbage are more completely separated, and the plurality of groups of bag breaking cones 1205 arranged on the beating plate 1204 can cause openings on the garbage packaging bag, thereby improving the efficiency of the bag breaking work. The pressure sensor 1206 arranged at the connection between the electric telescopic rod 1203 and the beating plate 1204 can automatically adapt to the beating work of garbage with different thicknesses by sensing the pressure, thereby improving the use effect of the primary screening device.

[0049] By controlling the feeding mechanism 5 to open the feeding channel, and simultaneously starting the circulating air pump 20, the circulating air pump 20 sucks out the air in the collecting cover 18 and sprays the air flow through the feeding mechanism 5 to generate an air wall, which blocks the dust generated in the screening process of the decoration garbage from escaping to the outside of the primary screening device. At the same time, the feeding mechanism 5 can change the direction of the air flow to guide the air flow into the screening mechanism 11, thereby realizing the air internal circulation of the primary screening device, avoiding dust pollution of the air in the working area, improving the environmental protection, and improving the use safety of the primary screening device.

[0050] The air flow is sprayed through the air injection holes 510 to form an air wall, and the air flow guide plate 504 can guide the air flow into the sealed cylinder 3, and can clean the bottom of the fixed ring 505 to prevent dust accumulation when the air flow enters the sealed cylinder 3. When the preliminary screening device is idle, the first sealing plate 503 can be controlled to rotate to the lower side to seal the preliminary screening device, so as to avoid the internal structure from being in contact with external air for a long time, thereby improving the cleaning efficiency of the preliminary screening device and prolonging the service life of the preliminary screening device.

[0051] The rolling of the screening drum 1101 drives the plurality of groups of four-pronged bag breaking knives 1103 to cut open the packaging bags of the garbage, so as to scatter the garbage. The plurality of groups of electric telescopic rods 1203 drive the plurality of groups of beating plates 1204 to reciprocally beat the garbage, so as to separate the particles attached to the garbage more thoroughly. The plurality of groups of bag breaking cones 1205 arranged on the beating plates 1204 can cause openings on the garbage packaging bags, thereby improving the efficiency of the bag breaking work. The connection between the electric telescopic rods 1203 and the beating plates 1204 is provided with a pressure sensor 1206, which can automatically adapt to the beating work of garbage of different thicknesses by sensing the pressure, thereby improving the use effect of the preliminary screening device.

[0052] The output ends of the plurality of groups of double-piston rod hydraulic cylinders 16 at the bottom drive the plurality of groups of walking wheels 17 to extend out of the accommodation box 15 and touch the ground, and the preliminary screening device is lifted. At this time, the preliminary screening device can be moved at will. The output ends of the plurality of groups of double-piston rod hydraulic cylinders 16 at the top can adjust the inclination angle of the sealed cylinder 3, so that different inclination angles can be used when screening different garbage. This not only improves the use convenience of the preliminary screening device, but also improves the use compatibility of the preliminary screening device.

[0053] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An air-circulating dustproof bag-breaking drum primary screening device, comprising a base (1), characterized in that: A support seat (2) is provided above the base (1); a sealing cylinder (3) is provided on the top of the support seat (2). The sealing cylinder (3) is provided with a feeding mechanism (5) at one end and a discharging mechanism (6) at the other end; a screening mechanism (11) is provided inside the sealing cylinder (3); an adaptive tapping mechanism (12) is provided inside the screening mechanism (11); a screening groove (21) is opened at the bottom of the sealing cylinder (3); a concentration cover (18) is connected to the bottom of the screening groove (21); The base (1) is equipped with a conveyor belt (19); the bottom of the central hood (18) is movably attached to the top of the conveyor belt (19); a circulating air pump (20) is provided on the bottom inner wall of the base (1); the input end of the circulating air pump (20) is connected to the central hood (18), and the output end is connected to the feeding mechanism (5); a first circulation channel (13) is provided on the sealed cylinder (3); one end of the first circulation channel (13) is connected to the feeding mechanism (5), and the other end is connected to the output end of the circulating air pump (20); The feeding mechanism (5) includes a connecting ring (501); a fixing ring (505) is sleeved on one end of the connecting ring (501) near the sealing cylinder (3); a second sealing plate (506) is provided inside the fixing ring (505); a second circulation channel (507) is provided on one side wall of the fixing ring (505) near the sealing cylinder (3); the second circulation channel (507) is movably connected to the first circulation channel (13); a first air chamber (508) is provided inside the connecting ring (501); the first air chamber (508) is connected to the second circulation channel (507); a rotating ring (502) is movably sleeved on one end of the connecting ring (501) away from the sealing cylinder (3); a first sealing plate (503) is provided inside the rotating ring (502). The opposing sidewalls of the first sealing plate (503) and the second sealing plate (506) are movably fitted together; an airflow guide plate (504) is provided inside the rotating ring (502); the airflow guide plate (504) is located on the side of the first sealing plate (503) away from the second sealing plate (506); a plurality of air jet holes (510) are equally spaced on the sidewall of the first sealing plate (503) away from the inner wall of the rotating ring (502); a second air chamber (509) is provided inside the rotating ring (502); the second air chamber (509) is connected to the first air chamber (508) and the plurality of air jet holes (510); The screening mechanism (11) includes a screening drum (1101); a number of screen holes (1102) are evenly distributed on the outer wall of the screening drum (1101); a number of four-sided bag-breaking knives (1103) are evenly distributed on the inner wall of the screening drum (1101); the cross section of the four-sided bag-breaking knife (1103) is cross-shaped; the adaptive tapping mechanism (12) includes two sets of support rods (1201); the two sets of support rods (1201) are symmetrically arranged at both ends of the sealing cylinder (3); a mounting column (1202) is provided between the two sets of support rods (1201). Several sets of electric telescopic rods (1203) are evenly spaced on the outer wall of the mounting column (1202); a set of slapping plates (1204) are connected to the output end of each set of electric telescopic rods (1203); several sets of bag-breaking cones (1205) are arranged in a rectangular array on the side wall of each set of slapping plates (1204) away from the mounting column (1202); a pressure sensor (1206) is provided at the connection between the output end of each set of electric telescopic rods (1203) and the corresponding set of slapping plates (1204), which automatically adapts to the slapping work of garbage of different thicknesses by sensing the pressure; Start the circulating air pump (20) to make the air inside the equipment circulate internally, and then put the decoration waste into the feeding mechanism (5).

2. The air-circulating dustproof bag-breaking drum primary screening device according to claim 1, characterized in that: A protective cover (4) is provided between the support base (2) and the base (1); a first collection box (7) is provided at one end of the base (1) near the feeding mechanism (5), and a second collection box (8) is provided at the other end; a discharge hose (9) is provided at the top of the second collection box (8); a first retaining ring (10) is provided at the end of the discharge hose (9) away from the second collection box (8); a first discharge port (14) is provided on the side wall of the base (1) near the feeding mechanism (5); the first discharge port (14) is connected to the first collection box (7).

3. The air-circulating dustproof bag-breaking drum primary screening device according to claim 1, characterized in that: The base (1) has several sets of receiving boxes (15) at the bottom inner wall edge; the bottom of each set of receiving boxes (15) is an open structure; the top of each set of receiving boxes (15) is provided with a set of double piston rod hydraulic cylinders (16); one output end of each set of double piston rod hydraulic cylinders (16) is hinged to the sealed cylinder (3); the other output end of each set of double piston rod hydraulic cylinders (16) extends into the receiving box (15) and is connected to a set of walking wheels (17).

4. The air-circulating dustproof bag-breaking drum primary screening device according to claim 1, characterized in that: The top of the screening channel (21) is provided with several sets of scrapers (22) at equal intervals; each set of scrapers (22) moves against the outer wall of the screening mechanism (11).

5. The air-circulating dustproof bag-breaking drum primary screening device according to claim 1, characterized in that: The discharge mechanism (6) includes a sealing cover (601), and a second discharge port (602) is provided on the bottom inner wall of the sealing cover (601); a discharge pipe (603) is provided at the bottom of the sealing cover (601); a second retaining ring (604) is provided at the bottom of the discharge pipe (603); the second retaining ring (604) is engaged with the first retaining ring (10).

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