Screening equipment used after waste incineration

Abstract

The utility model relates to screening equipment used after waste incineration, which comprises a rotary drum which is obliquely arranged and can rotate and comprises an inner net drum. The inner net cylinder is coaxially arranged in the roller; a cylinder opening in the upper end of the inner net cylinder is closed, and the feeding cylinder A extends into the inner net cylinder from the upper end of the roller; a side long material opening A is formed in the side wall of the lower end of the feeding cylinder A, and a side long material opening B is formed in the side wall of the roller; the feeding cylinder A can rotate; when the feeding cylinder A rotates, the opening of the side long material opening A faces downwards every time the feeding cylinder A rotates, one-time discharging is achieved, and intermittent discharging is achieved according to the rotating speed of the feeding cylinder A; and the roller adopts an adjustable thrust structure to prevent the roller from sliding down. The utility model has the beneficial effects that the feeding quantity can be better controlled, higher weight can be borne, the screening efficiency can be improved, the screening effect can be improved, the position of the thrust can be adjusted as required, and frequent replacement of the thrust is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of waste incineration material screening, in particular to a screening device used for waste incineration. Background Art

[0002] With the acceleration of industrialization and urbanization, there are a large amount of industrial waste and domestic waste. There are metals in these wastes that can be recycled, so it is necessary to incinerate these wastes and screen out the metals.

[0003] During the incineration process, some large pieces of garbage are not fully burned, so screening is required to remove the ashes after thorough combustion, leaving behind the incompletely burned materials or the materials with larger particles (these materials usually contain metals). Considering that metal may cause the screen to be blocked, our company adopts the screening design concept of the drum in the design.

[0004] However, the problem is that, unlike the drum screening of quartz sand, a lot of dust will be generated when the incinerated garbage is screened, so both ends of the drum need to be sealed, but it is not convenient to feed after sealing. Based on this, a new feeding structure is designed to protect the structure in view of the characteristics of the drum rolling and generating dust. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art and to provide a screening device for waste incineration that can better control the feed amount, can bear a higher weight, can improve the screening efficiency, can improve the screening effect, can adjust the position of the thrust as needed, and avoid frequent replacement of the thrust.

[0006] The purpose of the utility model is achieved through the following technical solutions: A screening device for waste after incineration, comprising a drum that is tilted and rotatable, and the drum is supported by a bottom frame;

[0007] Also includes an inner net cylinder;

[0008] The inner net cylinder is coaxially arranged inside the drum, and a miscellaneous material cavity is formed between the side walls of the inner net cylinder; the cylinder mouth at the upper end of the inner net cylinder is closed, and the feed cylinder A extends from the upper end of the drum and into the inner net cylinder;

[0009] The opening at the lower end of the inner net cylinder is an outer expansion opening with an increased diameter, and the outer expansion opening is fixed on the inner wall of the drum. There is a distance cavity between the outer expansion opening of the inner net cylinder and the lower end opening of the drum, and the distance cavity is a discharge cavity; a side-length material opening A is opened on the side wall of the lower end of the feed cylinder A, and a side-length material opening B is opened on the side wall of the drum; and the feed cylinder A can rotate;

[0010] When the feed cylinder A rotates, the opening of the side long material port A faces downward for each rotation, and material is discharged once. Intermittent material discharge is achieved according to the rotation speed. When the drum and the inner mesh cylinder rotate, the debris screened out by the inner mesh cylinder falls into the debris cavity, and the qualified material is discharged through the discharge cavity. With each rotation, the debris in the debris cavity is discharged through the side long material port B.

[0011] As a preferred technical solution of the present application, a waste bin is placed directly below the drum, and when the miscellaneous materials are discharged from the side long material port B, they fall into the waste bin; a conveyor belt is provided below the end of the discharge cavity, which transports the discharged good materials away.

[0012] As a preferred technical solution of the present application, a rotating shaft is respectively provided at both sides of the lower side of the drum, and driving gears are respectively provided at both ends of the rotating shaft; a gear ring is provided on the drum, and the corresponding driving gear is meshed with the corresponding gear ring; the rotating shaft is arranged on the base frame via the corresponding driving motor and the support seat.

[0013] As the preferred technical solution of the present application, the outer sleeve of the lower end of the drum is provided with a retaining ring, which contacts with the thrust mechanism to prevent the drum from sliding down; the thrust mechanism includes a thrust wheel, a sliding seat, a fixed seat, and a thrust rod; the base frame is provided with a tenon groove along the front-back direction, the sliding seat is adaptively installed in the tenon groove, a rotatable thrust wheel is installed on the sliding seat, and the thrust wheel is in rolling contact with the retaining ring; the front part of the thrust rod is a small-diameter light rod, the middle part is a large-diameter thrust-stopping one-way screw rod, and the rear part is a large-diameter light rod, the small-diameter light rod penetrates into the sliding seat, the large-diameter thrust-stopping one-way screw rod cooperates with the fixed seat screw thread to form a screw thread thrust, the fixed seat is fixed to the base frame, and the large-diameter light rod is vertically detachably inserted with a side rod. When wear occurs between the retaining ring and the thrust wheel, the thrust rod is rotated by the side rod, and the thrust rod can only move forward and cannot move backward, thereby driving the sliding seat and the thrust wheel to move forward, so as to better ensure the position of the drum.

[0014] As a preferred technical solution of the present application, the thrust mechanism also includes an inverted L-shaped seat; the large-diameter polished rod passes through the inverted L-shaped seat, and the end of the large-diameter polished rod is screwed with a limit nut; when the thrust rod moves forward during the rotation process, the limit nut abuts against the inverted L-shaped seat to form a limit, that is, the distance the thrust rod moves forward can be adjusted by adjusting the position of the limit nut. An elastic structure is provided on the inverted L-shaped seat, and the elastic structure abuts against the side rod; when the drum is lifted by the trolley and moves forward to a certain position, the limit nut is directly manually screwed to a suitable position, and the thrust rod automatically rotates slightly under the action of the elastic structure.

[0015] As a preferred technical solution of the present application, the upper end of the drum has an upper end cover, and the feed barrel A is rotatably inserted on the upper end cover through a driving mechanism; the upper end of the feed barrel A is inserted with a feed barrel B, and a dragon shaft is installed in the feed barrel B, and the dragon shaft extends into the feed barrel A; a feed bin is provided on the side of the feed barrel B. After the material enters the feed barrel B through the feed bin, it enters the feed barrel A under the action of the dragon shaft, and the feed barrel A is driven to rotate by the driving mechanism, and the speed of the feed passing through A is controlled by the driving mechanism, thereby controlling the interval time of unloading, which is conducive to the full screening of the material in the inner net barrel.

[0016] As the preferred technical solution of the present application, the driving mechanism includes a battery-powered motor and a pulley; the battery-powered motor is fixed on the upper end cover, and the output shaft of the battery-powered motor is connected to the feed barrel A through the corresponding pulley and belt, and the feed barrel A is installed on the upper end cover through a bearing.

[0017] For ease of understanding, the core design points and principles of this solution are explained:

[0018] (1) When feeding, the feeding can be done intermittently and the feeding amount can be well controlled;

[0019] The traditional drum feeding method is to extend the feed barrel into the drum, and screen the material as it flows from the upper end to the lower end of the drum. If the amount of feed cannot be controlled, for example, too much feed, much of the material will flow directly to the lower end and be discharged without being screened, resulting in insufficient screening. In order to control the amount of feed and ensure sufficient screening, the measure taken is to control the amount of material in the silo that falls into the feed barrel, but the material in the feed barrel flows under the action of gravity. In the actual production process, the material in the feed barrel may be discharged very quickly, or it may get stuck and the discharge is slow. Therefore, the amount of material obtained in the drum is uncertain.

[0020] In this scheme, the material in the feed barrel A is made to flow through the dragon shaft (rather than relying on gravity). When the dragon shaft rotates, the material flows, and when the dragon shaft does not rotate, the material does not flow. In addition, the dragon shaft is not used to continuously discharge the material, but the material is discharged through the side long material port A on the side wall at the lower end of the feed barrel A, and the feed barrel A is rotated by a battery-powered motor, so that the feed barrel A and the drum have a differential speed - that is, the drum rotates multiple times and the feed barrel rotates one circle; this method allows the material in the drum to be fully screened after several rotations, and then the feed barrel A rotates one circle and then feeds, which can effectively avoid the situation where the material is discharged before it is fully screened;

[0021] That is, through the differential speed of the dragon shaft, the feed drum A and the roller, the material feeding situation is effectively controlled, so that the material entering the drum can be fully screened;

[0022] (ii) The radial support on both sides of the drum can realize the rotation of the feed drum A, with better support effect, more materials can be loaded, and the screening efficiency is improved;

[0023] The structure of the traditional screening drum is that it has an inner screen cylinder, which is covered by a shell, and rotating shafts are arranged axially at both ends of the inner screen cylinder, and the rotating shafts are installed on the bottom frame through brackets; however, the feeding part of this design is relatively rigid, and a material bin is arranged on the top of the outer shell, and the material bin extends into the inner screen cylinder through a curved tube, which makes it difficult to arrange a dragon shaft in the inner screen cylinder and to control the feeding speed more accurately; (the curved tube is fixed, and the differential speed between the curved tube and the inner screen cylinder in this scheme cannot be achieved)

[0024] In this solution, the driving gear is on both sides of the drum to support and drive the drum, which can realize the design of setting the dragon shaft in the feed drum A and the design requirements of the differential speed between the inner feed drum A and the drum; in addition, compared with the traditional method of supporting and driving at both ends of the drum, the support capacity of this solution is better, and more materials can be loaded in the drum - the length of the drum can be designed to be as long as possible (for example, 5 meters to 10 meters, which cannot be designed to reach the traditional shaft end drive support method);

[0025] (iii) Thrust structure, adjustable;

[0026] Since the roller in this solution is provided with corresponding driving support mechanisms on both sides, the roller is easy to slide downward in the axial direction, so a thrust structure needs to be designed;

[0027] The general design idea of ​​the thrust structure is to set a retaining ring outside the drum, and then set a thrust wheel through the bottom frame, and the thrust wheel can be in contact with the retaining ring; but the problem is that, due to the large weight of the drum and the problem of installation accuracy, when the thrust wheel contacts the retaining ring during installation, the axial meshing area between the drive gear and the gear ring is not wide enough (the meshing area parallel to the axial direction is too narrow); in addition, after long-term use, wear will occur between the retaining ring and the thrust roller, and the drum will slide downward, causing the meshing area between the drive gear and the gear ring to become narrower. At this time, the thrust wheel and retaining ring can only be removed and replaced (but as long as the wear is not serious, it can still be used);

[0028] In this solution, the position of the thrust wheel can be adjusted by rotating the thrust rod; during installation or after long-term use, when the axial meshing area between the drive gear and the gear ring on the roller becomes narrower, the roller can be lifted with a trolley and the thrust wheel can be moved forward a certain distance.

[0029] The utility model has the following advantages:

[0030] (1) The speed of the material flowing in the feed barrel A is controlled by the dragon shaft, and intermittent feeding is achieved through the differential speed between the feed barrel A and the drum, so that the material can be fed more accurately, thereby avoiding excessive accumulation of materials in the drum, so that the materials that are not fully screened are directly discharged, and the screening effect is improved (when there are too many materials, the materials in the upper layer will flow directly downward, which is likely to result in poor screening effect);

[0031] (2) The driving gear is supported and driven on the outside of the drum. Compared with the traditional method of supporting and driving on the shaft end, it can bear more weight, so that the length of the drum is designed to be long enough to screen more materials, and the materials stay in the drum for a long time, thereby improving the screening efficiency and screening effect;

[0032] (3) The design of the thrust structure makes the position of the thrust wheel adjustable, eliminating the need for frequent replacement of the thrust wheel and retaining ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure of the utility model;

[0034] Figure 2 It is a schematic diagram of the structure arranged between the feed barrel A and the upper end cover;

[0035] Figure 3 It is a schematic diagram of the structure between the feed barrel A and the lower base frame;

[0036] Figure 4 It is a schematic diagram of the structure between the upper base frame and the support rod;

[0037] Figure 5 A schematic diagram of the structure between the thrust stop structure and the roller;

[0038] Figure 6 A schematic diagram of the thrust stop structure;

[0039] Figure 7 A schematic diagram showing the structure between the thrust structure and the roller from another angle;

[0040] Figure 8 is a structural schematic diagram of an elastic structure;

[0041] In the figure: 10-drum, 11-upper end cover, 12-side long material port B, 13-rotating shaft, 14-driving gear, 15-gear ring, 16-retaining ring;

[0042] 20-feeding cylinder A, 21-side long feed port A;

[0043] 30-feeding cylinder B, 31-dragon shaft, 32-feeding bin, 33-disc, 34-ball;

[0044] 41-upper base frame, 42-lower base frame, 43-support rod;

[0045] 50-inner net cylinder, 51-miscellaneous material chamber, 52-discharge chamber;

[0046] 60-waste bin, 70-conveyor belt, 80-base frame, 16-retaining ring;

[0047] 90-thrust mechanism, 91-thrust wheel, 92-sliding seat, 93-fixed seat, 94-thrust rod, 9401-side rod, 95-inverted L-shaped seat, 96-limiting nut, 97-elastic structure, 9701-sleeve, 9702-spring, 9703-pressure head, 9704-round table. DETAILED DESCRIPTION

[0048] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0049] It should be noted that the directions or positional relationships indicated by "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use, or are the directions or positional relationships commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0050] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0051] (Example 1)

[0052] See also Figure 1~Figure 4 As shown, the present embodiment proposes a screening device for waste after incineration, comprising a drum 10 which is arranged obliquely and can rotate, and an inner net cylinder 50, wherein the inner net cylinder 50 is coaxially arranged inside the drum 10, and the drum 10 is supported by a bottom frame 10;

[0053] Among them, an upper end cover 11 is provided at the upper end of the drum 10, and a bearing seat is installed at the center of the upper end cover 11. The feed cylinder A20 is adapted and installed with the bearing seat and then extends into the drum 10 and finally extends into the upper end of the inner net cylinder 50;

[0054] In addition, the opening of the upper end of the inner net cylinder 50 is closed, the feed cylinder A20 is installed with the inner net cylinder 50 via a bearing adapter, and the feed passes through A20 to support the upper end of the inner net cylinder 50; the opening of the lower end of the inner net cylinder 50 is an outer expansion opening with an increased diameter, and the outer expansion opening is fixed on the inner wall of the drum 10. There is a distance cavity between the outer expansion opening of the inner net cylinder 50 and the lower end opening of the drum 10, and the distance cavity is the discharge cavity 52;

[0055] Furthermore, there is a spacing space between the inner net cylinder 50 and the side wall of the drum 10, and the spacing space is a miscellaneous material cavity 51;

[0056] In addition, a battery-driven motor is installed on the upper end cover 11, and the battery-driven motor is connected to the feed barrel A20 through corresponding pulleys and belts; a side-long material port A21 is opened on the side wall of the lower end of the feed barrel A20; a side-long material port B12 is opened on the side wall of the drum 10;

[0057] When the feed cylinder A20 rotates, the opening of the side long material port A21 faces downward for each rotation, so that material is discharged once, and intermittent material discharge is achieved according to the rotation speed; when the drum 10 and the inner mesh cylinder 50 rotate, the sundries screened out by the inner mesh cylinder 50 fall into the sundries cavity 51, and the qualified materials are discharged through the discharge cavity 52, and the sundries in the sundries cavity 51 are discharged through the side long material port B12 for each rotation.

[0058] See also Figure 1 A waste bin 60 is placed directly below the drum 10. When the miscellaneous materials are discharged from the side long material port B12, they fall into the waste bin 60. A conveyor belt 70 is provided below the end of the discharge cavity 52 to carry away the discharged good materials.

[0059] See also Figure 1 , a rotating shaft 13 is provided at both sides of the lower part of the drum 10, and driving gears 14 are provided at both ends of the rotating shaft 13; a gear ring 15 is sleeved on the drum 10, and the corresponding driving gear 14 is meshed with the corresponding gear ring 15; the rotating shaft 13 is arranged on the bottom frame 80 through the corresponding driving motor and the supporting seat. That is, by supporting and driving the drum 10 at both sides below the drum 10, compared with the general method of supporting and driving the corresponding inner screen at the shaft end, this design of the present scheme can bear more weight, and the drum 10 can be designed to be 5m~10m long as needed, thereby improving the screening efficiency and screening effect.

[0060] In this embodiment, refer to Figure 2 and Figure 3The upper end of the feed barrel A20 is inserted with a feed barrel B30, and a dragon shaft 31 is installed in the feed barrel B30, and the dragon shaft 31 extends into the feed barrel A20; a feed bin 32 is provided on the side of the feed barrel B30. After the material enters the feed barrel B30 through the feed bin 32, it enters the feed barrel A20 under the action of the dragon shaft 31, and the feed barrel A20 is driven to rotate by the driving mechanism. The speed of the feed passing through A20 is controlled by the driving mechanism, thereby controlling the interval time of the material discharge, which is conducive to the material being fully screened in the inner net barrel 50.

[0061] In this embodiment, refer to Figure 2 , the middle of the feed barrel A20 gradually has a disc 33, and the disc 33 is pressed against the end face of the bearing seat through the ball 34; an annular groove is opened on the disc 33 and the bearing seat, and the ball 34 is placed in the annular groove (the annular groove has the same center line as the disc 33, the bearing seat, and the roller 10, and when the disc 33 rotates, the ball 34 rolls in the annular groove). The advantages of this design are: on the one hand, since the feed barrel A20 is pressed against the bearing seat through the disc 33 and the ball 34, a positioning is formed for the feed barrel A20 to prevent the feed barrel A20 from sliding downward; on the other hand, through the bearing, the disc 33 and the ball 34, compared with the installation of only the bearing, it is more conducive to the smooth rotation of the feed barrel A20 (equivalent to the feed barrel A20 having two rotating parts in the axial direction, and the two rotating parts are compared with one rotating part. When subjected to radial force, the feed barrel A20 is not easy to deviate from the center line of the roller 10, so it rotates more smoothly).

[0062] See also Figure 3 and Figure 4 , a height and inclination adjustable mechanism is provided below the feed barrel B30, so that the feed barrel B30 can be smoothly inserted into the feed barrel A20. Specifically, the height and inclination adjustable mechanism includes an upper bottom plate 41 and a lower base frame 42; an upper bottom plate 41 is welded and fixed near the upper end and the lower end of the feed barrel B30 respectively; the four corners of the upper bottom plate 41 are supported on the lower base frame 42 by support rods 43; the four corners of the upper bottom plate 41 are provided with long waist-shaped holes, and the upper end of the support rod 43 is shoulder-shaped, and the upper end of the support rod 43 is inserted into the long waist-shaped hole; the lower end of the support rod 43 is threadedly matched with the base frame 43, and is locked by a nut;

[0063] It should be noted that since the roller 10 is arranged at an angle (the feed barrel A20 is installed on the roller 10), when the feed barrel B30 needs to be inserted into the feed barrel A20, it may be necessary to use a trolley for lifting so that the feed barrel B30 can also be inserted at an angle; however, the present solution can achieve insertion through a height and inclination adjustable mechanism without the need for a trolley.

[0064] (Example 2)

[0065] On the basis of embodiment 1, a thrust stop mechanism 90 is further designed to prevent the roller 10 from sliding down;

[0066] Specifically, see Figure 5~Figure 7 , a retaining ring 16 is provided on the outer sleeve of the lower end of the drum 10, and a thrust mechanism 90 is installed on the base frame 80, and the thrust structure 90 is in contact with the retaining ring 16; wherein, the thrust mechanism 90 includes a thrust wheel 91, a slide seat 92, a fixed seat 93, and a thrust rod 94; a tenon groove is opened on the base frame 80 along the front and rear directions, and the slide seat 92 is adaptively installed in the tenon groove, and a rotatable thrust wheel 91 is installed on the slide seat 92, and the thrust wheel 91 is in rolling contact with the retaining ring 16; the front part of the thrust rod 94 is a small-diameter light rod, the middle part is a large-diameter thrust one-way screw rod, and the rear part is a large-diameter light rod, the small-diameter light rod penetrates into the slide seat 92, the large-diameter thrust one-way screw rod cooperates with the fixed seat 93 thread to form a thread thrust, and the fixed seat 93 is fixed to the base frame 80, and the large-diameter light rod is vertically and detachably inserted with a side rod 9401. When wear occurs between the retaining ring 16 and the thrust wheel 91, the thrust rod 94 is rotated by the side rod 9401, and the thrust rod 94 can only move forward but not backward, thereby driving the slide 92 and the thrust wheel 91 to move forward, thereby better ensuring the position of the drum 10.

[0067] In this embodiment, refer to Figure 5 , Figure 6 and Figure 8 , the thrust mechanism 90 also includes an inverted L-shaped seat 95; the large diameter polished rod passes through the inverted L-shaped seat 95, and the end of the large diameter polished rod is screwed with a limit nut 96; when the thrust rod 94 moves forward during the rotation process, the limit nut 96 abuts on the inverted L-shaped seat 95 to form a limit, that is, the distance of the thrust rod 94 moving forward can be adjusted by adjusting the position of the limit nut 96. An elastic structure 97 is provided on the inverted L-shaped seat 95, and the elastic structure 97 abuts on the side rod 9401; when the drum 10 is lifted by the trolley and moves forward to a certain position, the limit nut 96 is directly screwed to a suitable position manually, and the thrust rod 94 automatically rotates slightly under the action of the elastic structure 97.

[0068] In this embodiment, refer to Figure 8 The elastic structure 97 includes a sleeve 9701, a telescopic rod, and a spring 9702. The sleeve 9701 is inserted into the horizontal part of the inverted L-shaped seat 95 and is locked by a corresponding nut; the telescopic rod is inserted into the sleeve 9701 from bottom to top, and a pressure head 9703 is provided at the lower end of the telescopic rod. The lower end surface of the pressure head 9703 has an arc groove, and the arc groove abuts on the side rod 9401; a round table 9704 is provided on the sleeve 9701, and a spring 9702 is sleeved on the sleeve 9701, and the two ends of the spring 9702 respectively abut on the round table 9704 and the pressure head 9703.

[0069] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the present invention can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A screening device for waste after incineration, comprising a drum (10) which is arranged obliquely and can rotate, the drum (10) being supported by a base frame (80), characterized in that: Also includes an inner net tube (50); The inner net cylinder (50) is coaxially arranged inside the drum (10), and a miscellaneous material cavity (51) is formed between the side walls of the inner net cylinder (50); The opening of the upper end of the inner net cylinder (50) is closed, and the feed cylinder A (20) extends from the upper end of the drum (10) and into the inner net cylinder (50); The opening at the lower end of the inner net cylinder (50) is an outer expansion opening with an increased diameter, the outer expansion opening is fixed on the inner wall of the drum (10), and there is a distance cavity between the outer expansion opening of the inner net cylinder (50) and the opening at the lower end of the drum (10), the distance cavity being a discharge cavity (52); A side opening A (21) is formed on the side wall of the lower end of the feed cylinder A (20), and a side opening B (12) is formed on the side wall of the drum (10); and the feed cylinder A (20) is rotatable; When the feed drum A (20) rotates, the opening of the side long material port A (21) faces downwards for each rotation, and material is discharged once. Intermittent material discharge is achieved according to the rotation speed. When the drum (10) and the inner net drum (50) rotate, the miscellaneous materials screened out by the inner net drum (50) fall into the miscellaneous material cavity (51), and the qualified materials are discharged through the discharge cavity (52). For each rotation, the miscellaneous materials in the miscellaneous material cavity (51) are discharged through the side long material port B (12).

2. The screening device for waste after incineration according to claim 1, characterized in that: A waste bin (60) is placed directly below the drum (10), and when the miscellaneous materials are discharged from the side long material opening B (12), they fall into the waste bin (60); A conveyor belt (70) is provided below the end of the discharge cavity (52), and the conveyor belt carries away the discharged good quality materials.

3. The screening device for waste after incineration according to claim 1 is characterized in that: A rotating shaft (13) is respectively provided at two sides below the roller (10), and driving gears (14) are respectively provided at both ends of the rotating shaft (13); a gear ring (15) is sleeved on the roller (10), and a corresponding driving gear (14) meshes with a corresponding gear ring (15); The rotating shaft (13) is arranged on the base frame (80) via a corresponding driving motor and a supporting seat.

4. A screening device for waste after incineration according to any one of claims 1 to 3, characterized in that: A retaining ring (16) is provided on the outer sleeve at the lower end of the roller (10), and the retaining ring (16) contacts the thrust stop mechanism (90) to prevent the roller (10) from sliding down; The thrust mechanism (90) comprises a thrust wheel (91), a sliding seat (92), a fixed seat (93), and a thrust rod (94); The base frame (80) is provided with a tenon groove along the front-to-back direction, the slide seat (92) is adaptively mounted in the tenon groove, a rotatable thrust wheel (91) is mounted on the slide seat (92), and the thrust wheel (91) is in rolling contact with the retaining ring (16); the front part of the thrust rod (94) is a small-diameter polished rod, the middle part is a large-diameter thrust-stopping one-way screw rod, and the rear part is a large-diameter polished rod, the small-diameter polished rod penetrates into the slide seat (92), the large-diameter thrust-stopping one-way screw rod cooperates with the screw thread of the fixing seat (93) to form a screw thread thrust, the fixing seat (93) is fixed to the base frame (80), and the large-diameter polished rod is vertically and detachably mounted with a side rod (9401); When wear occurs between the retaining ring (16) and the thrust wheel (91), the thrust rod (94) is rotated by the side rod (9401), and the thrust rod (94) can only move forward but not backward, thereby driving the slide seat (92) and the thrust wheel (91) to move forward, thereby better ensuring the position of the drum (10).

5. The screening device for waste after incineration according to claim 4 is characterized in that: The thrust mechanism (90) further comprises an inverted L-shaped seat (95); The large-diameter polished rod passes through the inverted L-shaped seat (95), and a limit nut (96) is screwed onto the end of the large-diameter polished rod; when the thrust rod (94) moves forward during the rotation process, the limit nut (96) abuts against the inverted L-shaped seat (95) to form a limit, that is, the distance that the thrust rod (94) moves forward can be adjusted by adjusting the position of the limit nut (96); The inverted L-shaped seat (95) is provided with an elastic structure (97), which abuts against the side rod (9401); when the drum (10) is lifted by the trolley and moved forward to a certain position, the limit nut (96) is directly manually screwed to a suitable position, and the thrust rod (94) automatically performs a micro-rotation under the action of the elastic structure (97).

6. A screening device for waste after incineration according to any one of claims 1 to 3, characterized in that: The upper end of the drum (10) is provided with an upper end cover (11), and the feed cylinder A (20) is rotatably inserted into the upper end cover (11) via a driving mechanism; A feed barrel B (30) is inserted into the upper end of the feed barrel A (20), a dragon shaft (31) is installed in the feed barrel B (30), and the dragon shaft (31) extends into the feed barrel A (20); a feed bin (32) is provided on the side of the feed barrel B (30); After the material enters the feed barrel B (30) through the feed bin (32), it enters the feed barrel A (20) under the action of the dragon shaft (31), and the feed barrel A (20) is driven to rotate by the driving mechanism. The driving mechanism controls the rotation speed of the material passing through A (20), thereby controlling the interval time of material discharge, which is conducive to sufficient screening of the material in the inner net barrel (50).

7. The screening device for waste after incineration according to claim 6, characterized in that: The driving mechanism includes a battery-powered motor and a pulley; The battery-powered motor is fixed on the upper end cover (11), and the output shaft of the battery-powered motor is drivingly connected to the feed barrel A (20) via corresponding pulleys and belts, and the feed barrel A (20) is mounted on the upper end cover (11) via bearings.

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