Domestic garbage screening drum screen with bag breaking and self-cleaning functions

Abstract

The household garbage screening drum screen with the bag breaking and self-cleaning functions comprises a bottom plate, a discharging barrel, an outer cover shell, a sealing cover and a feeding hopper are sequentially arranged at the top end of the bottom plate from left to right, the discharging barrel is fixed to the bottom plate through two supporting frames, a discharging opening is formed in the bottom end of the outer wall of the right side of the discharging barrel, and a discharging opening is formed in the bottom end of the outer wall of the right side of the discharging barrel. A screening roller is rotationally arranged in the outer cover shell, screening holes are evenly formed in the inner wall of the screening roller located in the outer cover shell, the two ends of the screening roller extend out of the outer cover shell, and the left end of the screening roller is rotationally connected to the inner side of the right end of the discharging barrel in a sealed mode through a bearing; the right end of the screening roller rotates through a bearing and is connected to the outer side of the sealing cover in a sealed and sleeved mode, the feeding hopper is fixed to the bottom plate through a mounting frame, the output end of the feeding hopper penetrates through the sealing cover and communicates with the interior of the screening roller, and a screening hole cleaning mechanism is arranged in the screening roller and rotationally connected with two first bearing seats in a penetrating mode. A bag breaking mechanism is arranged on the inner wall, close to the screening roller, of the feeding hopper.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection equipment and domestic garbage treatment, in particular to a drum screen for domestic garbage screening with bag breaking and self-cleaning functions. Background Art

[0002] For domestic waste, the main treatment method is landfill. In order to improve the resource utilization of domestic waste, release the original landfill inventory and reduce pollution, the existing domestic waste in the landfill urgently needs to be excavated, screened, sorted and disposed of as a resource.

[0003] Nowadays, the main method of treating domestic waste has been transformed into incineration power generation, but due to the high water content, low calorific value and complex composition of domestic waste, domestic waste also needs to undergo certain resource screening and sorting before incineration.

[0004] The drum screen is widely used in the resource screening and sorting disposal line of original domestic waste and domestic waste (stale waste) in landfills due to its advantages of large processing capacity, high sorting accuracy, stable operation and simple maintenance. However, there are still some problems in actual use:

[0005] 1. When bagged domestic waste enters the drum screen, the dehydration effect of domestic waste will be poor due to its external packaging;

[0006] 2. The original domestic waste contains a large amount of kitchen waste, and the overall water content can reach 50%-60%. The water content of the domestic waste in the landfill can also reach more than 40% and contains a large amount of landfill soil. Therefore, in the actual domestic waste screening process, the drum screen often has the problem of fast sieve blockage and difficult cleaning. In severe cases, the sieve holes need to be cleaned every 2 hours or so, and the cleaning of the sieve holes also takes several hours, which seriously affects the production efficiency of the production line. Utility Model Content

[0007] The utility model aims to provide a drum screen for screening domestic waste with bag breaking and self-cleaning functions, so as to solve the problems raised in the above-mentioned background technology.

[0008] In order to solve the above technical problems, the utility model provides the following technical solutions: a drum screen for screening domestic waste with bag breaking and self-cleaning functions, comprising a bottom plate, the top of the bottom plate is provided with a discharge drum, an outer cover shell, a sealing cover and a feed hopper in sequence from left to right, the discharge drum is fixed to the bottom plate by two support frames symmetrically arranged front and back, the bottom end of the right outer wall of the discharge drum is provided with a discharge port, a screening drum is rotatably arranged in the outer cover shell, screening holes are evenly arranged on the inner wall of the screening drum located in the outer cover shell, both ends of the screening drum extend out of the outer cover shell, the left end of the screening drum rotates through a bearing and is sealed and connected to the inner side of the right end of the discharge drum, the right end of the screening drum rotates through a bearing and is sealed and sleeved on the outside of the sealing cover, the feed hopper is fixed to the bottom plate by a mounting frame, the output end of the feed hopper passes through the sealing cover and is connected with the inside of the screening drum, a sieve hole cleaning mechanism is provided in the screening drum, and the sieve hole cleaning mechanism includes A mounting cylinder with bristles is evenly arranged on the outer wall, and the left and right ends of the mounting cylinder are symmetrical and transmission-arranged with two connecting shafts, and the bottom plate located on the left side of the discharging cylinder and the right side of the sealing cover is symmetrical and fixedly provided with two connecting brackets, the top of the connecting bracket is connected with a first bearing seat, and the ends of the two connecting shafts away from the mounting cylinder respectively penetrate the discharging cylinder and the sealing cover, and are respectively rotatably connected with the two first bearing seats that penetrate the first bearing seats, and a first driving assembly of a driving connecting shaft is arranged on one of the connecting brackets, and the first driving assembly includes a first motor and a first motor steering gear arranged on the connecting bracket, and the two ends of the first motor steering gear are respectively transmission-connected with the execution end of the first motor and the end of the second connecting shaft, a bag breaking mechanism is arranged on the inner wall of the feed hopper near the screening drum, and a second driving assembly for driving the bag breaking mechanism is arranged on the mounting bracket, and two third driving assemblies for driving the screening drum to rotate are symmetrically arranged on the bottom plates located on the left and right ends of the outer cover shell.

[0009] Furthermore, a first U-shaped frame opening forward and used to accommodate the first bearing seat is fixedly provided at the bottom end of the connecting bracket, the inner wall of the first U-shaped frame is symmetrically arranged up and down and two limit strips are fixedly arranged, and two limit grooves that are in contact with and slidably connected to the outer walls of the corresponding side limit strips are symmetrically arranged at the upper and lower ends of the first bearing seat, a telescopic pump is fixedly provided on the rear side of the first U-shaped frame, the execution end of the telescopic pump passes through the first U-shaped frame and is fixedly connected to the first bearing seat, and two slideways are symmetrically arranged on the outer walls of the discharge barrel and the sealing cover, which are used for the same side connecting shaft to pass through and slide laterally.

[0010] Furthermore, the bag breaking mechanism includes a knife shaft whose two ends are rotatably connected to the feed hopper through a second bearing seat, and a plurality of bag breaking knives are evenly spaced on the knife shaft and are connected in a transmission manner. A spacer sleeve is connected to the knife shaft between two adjacent bag breaking knives, and the second driving assembly includes a second motor provided on the mounting frame, and the execution end of the second motor is connected in a transmission manner to a driving gear, and one end of the knife shaft passes through the feed hopper and is connected in a transmission manner to a sprocket that is connected in a transmission chain to the driving gear.

[0011] Furthermore, the third driving assembly includes two transmission rings respectively sleeved and fixedly connected to the outer wall of the screening drum at both ends of the outer cover shell, two second U-shaped frames are symmetrically and fixedly arranged on the bottom plate at the bottom end of the transmission ring, a tugboat with an outer wall that is in contact with the outer wall of the transmission ring and is transmission connected is rotatably arranged in the second U-shaped frame, a third motor is fixedly arranged on the side walls of the two second U-shaped frames located on the front side, the execution end of the third motor is transmission-connected to the second motor steering gear, and the output section of the second motor steering gear passes through the second U-shaped frame and is transmission-connected to the tugboat.

[0012] Furthermore, the drum screen for screening domestic waste is arranged to be inclined downward from right to left.

[0013] Furthermore, a mounting block is fixedly provided on the bottom plate between the two tugboats on the right side, and a limiting wheel is rotatably provided on the top of the mounting block, the outer wall of which is in contact with the left side wall of the right transmission ring and is transmission-connected.

[0014] Furthermore, a row of observation windows is horizontally arranged at equal intervals on the outer wall of the outer cover shell.

[0015] Furthermore, an inspection port is provided on the outer wall of the discharge barrel above the discharge port, and a sealing door is hingedly provided on the outer wall of the discharge barrel, and the sealing door locks the inspection port through a locking member.

[0016] The beneficial effect achieved by the utility model is as follows: by installing the sieve hole cleaning mechanism inside the screening drum, and setting the rotation direction of the sieve hole cleaning mechanism to be opposite to that of the screening drum, when the drum screen works normally, the sieve hole cleaning mechanism can directly remove the mud and entangled flexible materials attached to the screening drum and the sieve holes, thereby realizing automatic cleaning of the screening drum and the sieve holes, which is simple, convenient and has low use cost. At the same time, by arranging a bag breaking mechanism in the feed hopper to break the bags entering the screening drum, the problem of poor dehydration effect of bagged domestic garbage due to the outer packaging can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of a drum screen for screening domestic waste with bag breaking and self-cleaning functions in an embodiment;

[0018] Figure 2 A top view of a drum screen for screening domestic waste with bag breaking and self-cleaning functions in an embodiment;

[0019] Figure 3 A cross-sectional view of a drum screen for screening domestic waste with bag breaking and self-cleaning functions in an embodiment;

[0020] Figure 4 It is a left view of the discharging barrel in the embodiment;

[0021] Figure 5 is a structural schematic diagram of a sieve hole cleaning mechanism in an embodiment;

[0022] Figure 6 for Figure 5 A local enlarged schematic diagram of point a in the middle;

[0023] Figure 7 Schematic diagram of the structure of the bag breaking mechanism in the embodiment. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings.

[0025] like Figure 1-5As shown, the utility model discloses a drum screen for screening domestic waste with bag breaking and self-cleaning functions, comprising: a bottom plate 1, a discharging cylinder 2, an outer cover shell 3, a sealing cover 4 and a feeding hopper 5 are arranged on the top of the bottom plate 1 from left to right in sequence, the discharging cylinder 2 is fixed to the bottom plate 1 by two support frames symmetrically arranged front and back, a discharging port 21 is arranged at the bottom end of the right outer wall of the discharging cylinder 2, a screening drum 6 is rotatably arranged in the outer cover shell 3, and screening holes are evenly arranged on the inner wall of the screening drum 6 located in the outer cover shell 3 61, both ends of the screening drum 6 extend out of the outer cover 3, the left end of the screening drum 6 rotates through a bearing and is sealed and connected to the inner side of the right end of the discharge drum 2, the right end of the screening drum 6 rotates through a bearing and is sealed and sleeved to the outer side of the sealing cover 4, the feed hopper 5 is fixed to the bottom plate 1 through a mounting frame 51, the output end of the feed hopper 5 passes through the sealing cover 4 and is connected to the inside of the screening drum 6, and a sieve hole cleaning mechanism is arranged in the screening drum 6, and the sieve hole cleaning mechanism includes a mounting cylinder 7 with bristles evenly arranged on the outer wall, and the bristles are connected to the outer wall of the mounting cylinder 7. The inner wall of the screening drum 6 is in contact, and the left and right ends of the mounting cylinder 7 are symmetrical and transmission-equipped with two connecting shafts 71. The bottom plate 1 located on the left side of the discharging cylinder 2 and the right side of the sealing cover 4 is symmetrical and fixedly provided with two connecting brackets 72. The top of the connecting bracket 72 is connected with a first bearing seat 73. The ends of the two connecting shafts 71 away from the mounting cylinder 7 respectively penetrate the discharging cylinder 2 and the sealing cover 4, and are respectively rotatably connected with the two first bearing seats 73 that penetrate. One of the connecting brackets 72 is provided with a first driving assembly driving the connecting shaft 71. The first driving assembly includes a first motor and a first motor steering gear arranged on the connecting bracket 72. The two ends of the first motor steering gear are respectively transmission-connected with the execution end of the first motor and the end of the connecting shaft 71. A bag breaking mechanism 8 is provided on the inner wall of the feed hopper 5 close to the screening drum 6. A second driving assembly for driving the bag breaking mechanism is provided on the mounting frame 51. Two third driving assemblies for driving the screening drum 6 to rotate are symmetrically provided on the bottom plate 1 located at the left and right ends of the outer cover shell 3.

[0026] Among them, a drainage outlet is arranged at the bottom end of the left side wall of the outer cover shell 3.

[0027] Further, such as Figure 3 , 5As shown in 6, in order to facilitate the adjustment of the contact tightness between the bristles and the inner wall of the screening drum and to facilitate the subsequent replacement of the bristles, a first U-shaped frame 721 with an opening forward and used to accommodate the first bearing seat 73 is fixedly provided at the bottom end of the connecting bracket 72, and two limit bars 722 are fixedly provided on the inner wall of the first U-shaped frame 721 symmetrically from top to bottom, and two limit grooves 731 that are in contact with and slidably connected to the outer wall of the corresponding side limit bars 722 are symmetrically provided at the upper and lower ends of the first bearing seat 73, and a telescopic pump 723 is fixedly provided on the rear side of the first U-shaped frame 721, and the execution end of the telescopic pump 723 passes through the first U-shaped frame 721 and is fixedly connected to the first bearing seat 73, and two slideways 22 for the same side connecting shaft 71 to pass through and slide laterally are symmetrically provided on the outer walls of the discharging barrel 2 and the sealing cover 4;

[0028] The first motor is fixedly connected to the first bearing seat 73;

[0029] When it is necessary to push and adjust the contact tightness between the bristles and the inner wall of the screening drum 6, the execution end of the telescopic pump 723 drives the mounting cylinder 7 to move forward and backward on the screening drum 6 through the first bearing seat 73 and the connecting shaft 71 in turn.

[0030] The first bearing seat 73 slides forward and backward along with the execution end of the telescopic pump 723 , the limiting groove 731 slides along the limiting strip 722 along with the first bearing seat 73 , and the connecting shaft 71 moves forward and backward along the slideway 22 along with the first bearing seat 73 .

[0031] Further, such as Figure 1 , 3 As shown in 7, the bag breaking mechanism 8 includes a knife shaft 82 rotatably connected to the feed hopper 5 at both ends through a second bearing seat 81, and a plurality of bag breaking knives 83 are evenly spaced and sleeved and transmission-connected on the knife shaft 82. A spacer sleeve 84 is sleeved on the knife shaft 82 between two adjacent bag breaking knives 83. The second driving assembly includes a second motor provided on the mounting frame 51, and the execution end of the second motor is transmission-connected to a driving gear. One end of the knife shaft 82 passes through the feed hopper 5 and is transmission-connected to a sprocket 85 transmission-connected to the driving gear through a transmission chain.

[0032] Further, such as Figure 1-3 As shown, the third driving assembly includes two transmission rings 62 respectively sleeved and fixedly connected to the outer wall of the screening drum 6 at both ends of the outer cover shell 3, two second U-shaped frames 9 are symmetrically and fixedly arranged on the bottom plate 1 at the bottom end of the transmission ring 62, and a tugboat 91 whose outer wall is in contact with the outer wall of the transmission ring 62 and is transmission-connected is rotatably arranged in the second U-shaped frame 9, and a third motor is fixedly arranged on the side walls of the two second U-shaped frames 9 located on the front side, and the execution end of the third motor is transmission-connected to the second motor steering gear, and the output section of the second motor steering gear passes through the second U-shaped frame 9 and is transmission-connected to the tugboat 91.

[0033] Furthermore, in order to facilitate the automatic discharge of domestic waste, the drum screen for screening domestic waste is arranged to be tilted downward from right to left.

[0034] Further, such as Figure 3 As shown, in order to avoid displacement of the screening drum caused by the tilted setting of the drum screen for screening domestic waste, and at the same time avoid eccentricity of the screening drum, aggravated wear of the tugboat and even burning of the motor due to excessive load, a mounting block 10 is fixedly provided on the bottom plate 1 between the two tugboats 91 on the right side, and a limiting wheel 101 is rotatably provided on the top end of the mounting block 10, the outer wall of which is in contact with the left side wall of the right transmission ring 62 and is transmission-connected. The limiting wheel 101 has a rightward limiting effect on the right transmission ring 62 and acts on the screening drum 6.

[0035] Further, such as Figure 1 As shown, in order to conveniently observe whether the screening holes are blocked, a row of observation windows 31 are arranged on the outer wall of the outer cover shell 3 at equal intervals in the horizontal direction.

[0036] Further, such as Figure 3 and 4 As shown, in order to facilitate workers to enter the screening drum for maintenance and to facilitate the replacement of bristles, an inspection port 23 is provided on the outer wall of the discharge cylinder 2 above the discharge port 21, and a sealing door 24 is hingedly provided on the outer wall of the discharge cylinder 2. The sealing door 24 locks the inspection port 23 with a locking member. When inspecting or replacing the bristles, the locking member is contacted to lock the sealing door 24, open the sealing door 24, and enter the screening drum 6 through the inspection port 23 to inspect or replace the bristles.

[0037] Based on the above structure, Figure 1-7 As shown, when in use, bagged domestic garbage enters the feed hopper 5 through the input end of the feed hopper 5, and the second motor drives the knife shaft 82 to rotate the bag breaking knife 83 through the driving gear, the transmission chain and the sprocket 85 in turn, so as to break the bag of the bagged domestic garbage. After that, the domestic garbage enters the screening drum 6 through the output end of the feed hopper 5, and the third motor drives the screening drum 6 to rotate forward through the second motor steering gear, the tugwheel 91 and the transmission ring 62 in turn, so as to dehydrate the domestic garbage, and the dehydrated water is discharged through the drain port. At the same time, since the drum screen for screening domestic garbage is arranged to be tilted downward from right to left, the domestic garbage will continuously move toward the discharge drum 2 during the dehydration process until it is discharged from the discharge port 21.

[0038] While the screening drum 6 is dehydrating the domestic garbage, the first motor drives the mounting cylinder 7 to rotate in the opposite direction through the first motor steering gear and the connecting shaft 71 in sequence, thereby cleaning the screening holes 61 .

[0039] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A drum screen for screening domestic waste with bag breaking and self-cleaning functions, characterized in that: The invention comprises a bottom plate (1), the top of which is provided with a discharge barrel (2), an outer cover shell (3), a sealing cover (4) and a feed hopper (5) in order from left to right, the discharge barrel (2) being fixed to the bottom plate (1) by two support frames symmetrically arranged in front and back, a discharge port (21) being provided at the bottom end of the right outer wall of the discharge barrel (2), a screening drum (6) being rotatably arranged in the outer cover shell (3), screening holes (61) being evenly arranged on the inner wall of the screening drum (6) located in the outer cover shell (3), and both ends of the screening drum (6) extending outwards. The left end of the screening drum (6) rotates through a bearing and is sealed to the inner side of the right end of the discharge drum (2); the right end of the screening drum (6) rotates through a bearing and is sealed to the outer side of the sealing cover (4); the feed hopper (5) is fixed to the bottom plate (1) through a mounting frame (51); the output end of the feed hopper (5) passes through the sealing cover (4) and is connected to the inside of the screening drum (6); a sieve hole cleaning mechanism is arranged in the screening drum (6); the sieve hole cleaning mechanism includes a mounting cylinder (7) with bristles evenly arranged on the outer wall; the mounting cylinder (7) The left and right ends of the mounting cylinder (7) are symmetrical and transmission-equipped with two connecting shafts (71); the bottom plate (1) located on the left side of the discharging cylinder (2) and the right side of the sealing cover (4) is symmetrically and fixedly provided with two connecting brackets (72); the top end of the connecting bracket (72) is connected to a first bearing seat (73); the ends of the two connecting shafts (71) away from the mounting cylinder (7) respectively penetrate the discharging cylinder (2) and the sealing cover (4) and are respectively rotatably connected to the two first bearing seats (73); one of the connecting brackets (72) is provided with a driving connecting shaft (71) and a first driving group The first driving assembly comprises a first motor and a first motor steering gear arranged on a connecting bracket (72), the two ends of the first motor steering gear are respectively connected to the execution end of the first motor and the end of the first connecting shaft (71) in a driving manner, a bag breaking mechanism (8) is arranged on the inner wall of the feed hopper (5) close to the screening drum (6), a second driving assembly for driving the bag breaking mechanism is arranged on the mounting frame (51), and two third driving assemblies for driving the screening drum (6) to rotate are symmetrically arranged on the bottom plate (1) located at the left and right ends of the outer cover shell (3).

2. A drum screen for screening domestic waste with bag breaking and self-cleaning functions according to claim 1, characterized in that: A first U-shaped frame (721) opening forward and used to accommodate the first bearing seat (73) is fixedly provided at the bottom end of the connecting bracket (72); the inner wall of the first U-shaped frame (721) is symmetrically provided with two limit bars (722) fixedly provided thereon; two limit grooves (731) that are symmetrically fitted with and slidably connected to the outer walls of the corresponding side limit bars (722) are symmetrically provided at the upper and lower ends of the first bearing seat (73); a telescopic pump (723) is fixedly provided at the rear side of the first U-shaped frame (721); the execution end of the telescopic pump (723) passes through the first U-shaped frame (721) and is fixedly connected to the first bearing seat (73); and two slideways (22) are symmetrically provided on the outer walls of the discharge barrel (2) and the sealing cover (4), respectively used for the same-side connecting shaft (71) to pass through and slide laterally.

3. The drum screen for screening domestic waste with bag breaking and self-cleaning functions according to claim 1, characterized in that: The bag breaking mechanism (8) comprises a knife shaft (82) whose two ends are rotatably connected to the feed hopper (5) through a second bearing seat (81); a plurality of bag breaking knives (83) are arranged on the knife shaft (82) at equal intervals and are connected in a sleeve and transmission manner; a spacer sleeve (84) is connected in a sleeve on the knife shaft (82) between two adjacent bag breaking knives (83); the second driving component comprises a second motor arranged on the mounting frame (51); an execution end of the second motor is connected in a transmission manner to a driving gear; one end of the knife shaft (82) passes through the feed hopper (5) and is connected in a transmission manner to a sprocket wheel (85) connected in a transmission manner to the driving gear through a transmission chain.

4. The drum screen for screening domestic waste with bag breaking and self-cleaning functions according to claim 1, characterized in that: The third driving assembly comprises two transmission rings (62) respectively sleeved and fixedly connected to the outer wall of the screening drum (6) at two ends of the outer casing (3); two second U-shaped frames (9) are symmetrically and fixedly arranged on the bottom plate (1) at the bottom end of the transmission ring (62); a tug (91) whose outer wall is in contact with the outer wall of the transmission ring (62) and is transmission-connected is rotatably arranged inside the second U-shaped frame (9); a third motor is fixedly arranged on the side walls of the two second U-shaped frames (9) located at the front side; an execution end of the third motor is transmission-connected to a second motor steering gear; an output section of the second motor steering gear passes through the second U-shaped frame (9) and is transmission-connected to the tug (91).

5. A drum screen for screening domestic waste with bag breaking and self-cleaning functions according to any one of claims 1 to 4, characterized in that: The drum screen for screening domestic waste is arranged to be inclined downward from right to left.

6. The drum screen for screening domestic waste with bag breaking and self-cleaning functions according to claim 4, characterized in that: A mounting block (10) is fixedly arranged on the bottom plate (1) between the two tugboats (91) on the right side, and a limiting wheel (101) is rotatably arranged on the top of the mounting block (10), the outer wall of which is in contact with and transmission-connected to the left side wall of the right transmission ring (62).

7. The drum screen for screening domestic waste with bag breaking and self-cleaning functions according to claim 5, characterized in that: A row of observation windows (31) are arranged on the outer wall of the outer casing (3) at equal intervals in the horizontal direction.

8. The drum screen for screening domestic waste with bag breaking and self-cleaning functions according to claim 5, characterized in that: An inspection opening (23) is provided on the outer wall of the discharge barrel (2) above the discharge port (21), and a sealing door (24) is hingedly provided on the outer wall of the discharge barrel (2), and the sealing door (24) locks the inspection opening (23) through a locking member.

Images