Fine cutting bag breaking device and automatic bag opening and discharging equipment thereof

Abstract

The utility model relates to a fine cutting bag breaking device and automatic bag opening and discharging equipment thereof, the fine cutting bag breaking device is installed on a material screening cylinder of the automatic bag opening and discharging equipment, and the fine cutting bag breaking device comprises an inner side plate, a retaining ring, a fine cutting bag unit and a slide wire groove, the fine bag cutting unit and the slide wire groove are electrically connected and are both arranged on the outer wall of the screening barrel. A cutter head of the fine bag cutting unit extends to the inner space of the screening barrel; the inner side plates are arranged between the adjacent cutter heads; the retaining ring is located on the operation side of the cutter head. The automatic bag opening and discharging equipment comprises a supporting platform, a material screening barrel, a driving device and the fine cutting bag breaking device, the material screening barrel is divided into a coarse material area and a fine material area, a feeding port and a discharging port are formed in the two ends of the material screening barrel respectively, and the fine cutting bag breaking device is arranged in the fine material area of the material screening barrel to cut small bags through barrel body blades. And the automatic bag opening and discharging equipment performs graded cutting on the bags, so that the bag opening efficiency is further improved.

Description

Technical Field

[0001] This utility model relates to the field of waste treatment technology, and in particular to a waste bag fine cutting and breaking device and its automatic bag unloading equipment. Background Technology

[0002] The key technological bottleneck in the sorting and processing of municipal solid waste lies in the lack of efficient, specialized bag-breaking equipment. Currently, the mainstream "bag-breaking machines" on the market are essentially simple modifications of traditional plastic crushing equipment. Their working principle is to indiscriminately and forcefully crush the entire bag of waste (including the plastic bag and its contents). This extensive processing method has serious drawbacks: on the one hand, the various recyclable materials inside the bag (such as plastic containers, paper packaging, metal products, etc.) are crushed into mixed fragments, greatly increasing the difficulty of subsequent sorting processes; on the other hand, excessive crushing causes some recyclable resources to lose their reuse value. Because existing equipment cannot meet actual needs, most sorting plants have to adopt the most primitive manual bag-breaking method, where workers use knives to cut open each plastic bag individually. This method is not only inefficient but also has high labor costs, becoming a major obstacle to improving the efficiency and economic benefits of municipal solid waste resource recovery. Therefore, there is an urgent need to develop a new type of bag-breaking equipment that can accurately break open plastic bags without damaging the contents. This equipment needs to have high processing capacity and be suitable for pre-screened bagged municipal solid waste, thus creating favorable conditions for subsequent automated sorting. Utility Model Content

[0003] Existing technologies suffer from problems such as the inability to grade and cut bags, low bag-opening efficiency, and significant material residue. Therefore, to address these issues, this invention provides a fine-cutting bag-breaking device and its automatic bag-opening and unloading equipment.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A fine-cutting and bag-breaking device, which is installed on the screening cylinder of an automatic bag-unloading equipment. The fine-cutting and bag-breaking device includes an inner side plate, a retaining ring, a fine-cutting unit, and a sliding groove. The fine-cutting unit and the sliding groove are electrically connected and are both arranged on the outer wall of the screening cylinder. The cutting head of the fine-cutting unit extends into the internal space of the screening cylinder. The inner side plate is arranged between adjacent cutting heads. The retaining ring is located on the working side of the cutting head.

[0005] The beneficial effects of adopting the above solution are: the fine-cutting and bag-breaking device is equipped with a protective ring, which effectively blocks the free flow of small bags and improves the cutting efficiency of the fine-cutting and bag-breaking device for small bags.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the fine-cut bag unit includes a drive motor electrically connected to the sliding groove; a cutting blade driven by the motor, the blade having a tooth structure with a rake angle of 5° to 25°; the surface of the tooth is provided with grooves or surface texture structure.

[0008] Furthermore, the height of the retaining ring is less than the height of the inner side plate.

[0009] An automatic bag-opening and unloading device includes a support platform, a screening cylinder, a driving device, and a fine-cutting bag-breaking device. The screening cylinder is set on the support platform and is driven to rotate by the driving device. The screening cylinder is divided into a coarse material zone and a fine material zone, with an inlet and an outlet at its two ends, respectively. The fine-cutting bag-breaking device is set in the fine material zone of the screening cylinder to cut small bags with cylinder blades.

[0010] Based on the above technical solution, the present invention can be further improved as follows.

[0011] Furthermore, it also includes a coarse-cutting and bag-breaking device, which includes an inner side plate, a coarse-cutting unit, a pressure reducer, and a sliding groove. The coarse-cutting unit and the sliding groove are installed on the outer wall of the screening cylinder. The coarse-cutting unit is electrically connected to the sliding groove, and its cutting head extends into the screening cylinder. The inner side plate is arranged between adjacent cutting heads. The pressure reducer is a buffer spring structure, connected to the cutting head to make it elastic. The coarse-cutting unit includes a motor and a blade with a negative chamfer structure, and the side wall of the blade is provided with a through hole.

[0012] The beneficial effects of adopting the above solution are: the cutting head of the coarse bag cutting unit extends into the inner wall of the screening cylinder, the inner side plate is set between the cutting head and the cutting head of the coarse bag cutting unit, and the cutting head is driven to rotate synchronously when the screening cylinder rotates. The cutting head and the inner side plate work together to quickly cut the irregular surface of the soft plastic bag, thus effectively improving the bag opening efficiency and cutting effect.

[0013] The beneficial effects of adopting the above-mentioned further solution are: the coarse cutting and bag breaking device is equipped with a pressure reducer, which makes the blade teeth fit the bag surface, adapts to the irregular surface of the soft plastic bag material, reduces uneven wear of the blade edge, and improves cutting efficiency and the service life of the cutting head.

[0014] Furthermore, the inner side plate is a plurality of straight plates evenly distributed on the inner wall of the screening cylinder; or the inner side plate is a segmented straight plate, respectively disposed on the inner wall of the coarse material zone and / or fine material zone of the screening cylinder.

[0015] Furthermore, the coarse material zone is provided with coarse sieve holes, and the fine material zone is provided with fine sieve holes, with a receiving tray below each sieve hole; the sieve cylinder is inclined at 3° to 25°, with the inlet higher than the outlet.

[0016] Furthermore, the drive device includes: a motor, a gearbox, and a wheel, wherein the gearbox is driven by a chain, belt, or gear set; and a control unit, which is equipped with a frequency converter for automatically adjusting the speed according to changes in motor voltage.

[0017] The advantages of adopting the above solution are: the automatic bag unloading equipment has a compact overall structure, is easy to operate, requires no additional dustproof devices, and reduces energy consumption and production costs.

[0018] Furthermore, it also includes a primary bag-breaking device, which includes: a feeding plate with baffles on both sides; a roller cutter consisting of a roller and staggered blades, with the cutter head extending out of the feeding plate surface to cut the bag; a vibration device that generates excitation force through the rotation of an eccentric block, driving the feeding plate with springs to vibrate; and a metal recycling mechanism including a magnetic suction part and a rotator for adsorbing and removing metal materials.

[0019] The beneficial effect of adopting the above-mentioned further solution is that the initial cutting and bag breaking device can replace manual cutting and screening work, effectively improving production efficiency.

[0020] Furthermore, the metal recycling mechanism also includes a deflector for removing metal materials adsorbed by the magnetic suction part; or, the metal recycling mechanism also includes a rotating belt, which is disposed on the outer periphery of the magnetic suction part, and the rotating device drives the rotating belt to move synchronously with the magnetic suction part, and the distance between the two is adjustable.

[0021] The beneficial effect of adopting the above-mentioned further solution is that the metal recycling mechanism is used to adsorb the metal material initially divided by the initial cutting and bag breaking device, so as to avoid the metal material entering the screen cylinder and damaging the blade. If the metal material enters the screen cylinder, it will also damage the screen cylinder, and in severe cases, the entire screen cylinder will be scrapped. Attached Figure Description

[0022] Figure 1 This is a 3D diagram of an automatic bag-unloading and material-removing device;

[0023] Figure 2 This is a cross-sectional view of an automatic bag-unloading device;

[0024] Figure 3 This is a schematic diagram of the initial bag-breaking device;

[0025] Figure 4 This is a schematic diagram of a metal recycling facility.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 100 Fine-cut bag breaking device, 101 Inner side plate, 102 Protective ring, 103 Fine-cut bag unit, 1031 Drive motor, 1032 Cutting blade, 104 Sliding groove;

[0028] 200 Automatic bag unloading and material discharge equipment, 201 Support platform, 202 Screening cylinder, 2021 Coarse material zone (with coarse screen holes), 2022 Fine material zone (with fine screen holes), 2023 Feed inlet, 2024 Discharge outlet, 203 Drive unit, 2031 Motor, 2032 Gearbox, 2033 Rotary wheel, 204 Receiving tray;

[0029] 300 Coarse cutting and bag breaking device, 301 Inner side plate, 302 Coarse cutting bag unit, 3021 Motor, 3022 Negative chamfering cutter, 304 Sliding groove;

[0030] 400 initial bag cutting device;

[0031] 401 Feeding plate, 4011 Baffle, 402 Roller cutter, 4021 Roller, 4022 Staggered blades, 403 Vibration device, 4031 Spring, 404 Metal recycling mechanism, 4041 Magnetic suction part, 4042 Rotator, 4044 Rotating belt. Detailed Implementation

[0032] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0033] Examples (such as) Figures 1 to 4 (as shown)

[0034] A bag-cutting and breaking device 100 is installed on the screening cylinder 202 of an automatic bag-unloading equipment. The bag-cutting and breaking device 100 includes an inner side plate 101, a retaining ring 102, a bag-cutting unit 103, and a sliding groove 104. The bag-cutting unit and the sliding groove are electrically connected and are both arranged on the outer wall of the screening cylinder. The cutting head of the bag-cutting unit extends into the internal space of the screening cylinder. The inner side plate is arranged between adjacent cutting heads. The retaining ring is located on the working side of the cutting head.

[0035] The beneficial effects of adopting the above solution are: the fine-cutting and bag-breaking device 100 is provided with a protective ring, which effectively blocks the free flow of small bags and improves the cutting efficiency of the fine-cutting and bag-breaking device 100 on small bags.

[0036] Based on the above technical solution, the present invention can be further improved as follows.

[0037] Furthermore, the fine-cut bag unit includes a drive motor 1031 electrically connected to the sliding groove 104; a cutting blade 1032 driven by the motor, the blade having a tooth structure with a rake angle of 5° to 25°; the surface of the tooth is provided with grooves or surface texture structures to enhance the cutting effect.

[0038] Furthermore, the height of the retaining ring 102 is less than the height of the inner side plate 101.

[0039] An automatic bag-opening and unloading device 200 includes a support platform 201, a screening cylinder 202, a drive device 203, and a fine-cutting bag-breaking device 100. The screening cylinder 202 is mounted on the support platform and is driven to rotate by the drive device. The screening cylinder is divided into a coarse material zone 2021 and a fine material zone 2022, with an inlet 2023 and an outlet 2024 at its two ends, respectively. The fine-cutting bag-breaking device 100 is located in the fine material zone of the screening cylinder and cuts the small bags with the cylinder blades.

[0040] Based on the above technical solution, the present invention can be further improved as follows.

[0041] Furthermore, it also includes a coarse cutting and bag breaking device 300, which includes an inner side plate 301, a coarse cutting unit 302, a pressure reducer (not shown in the figure), and a sliding groove 304. The coarse cutting unit 302 and the sliding groove 304 are installed on the outer wall of the screening cylinder. The coarse cutting unit is electrically connected to the sliding groove, and its cutting head extends into the screening cylinder. The inner side plate is arranged between adjacent cutting heads. The pressure reducer (not shown in the figure) is a buffer spring structure, which is connected to the cutting head to make it elastic. The coarse cutting unit includes a motor and a blade with a negative chamfer structure, and the side wall of the blade is provided with a through hole.

[0042] The beneficial effects of adopting the above solution are: the cutting head of the coarse bag cutting unit extends into the inner wall of the screening cylinder, the inner side plate is set between the cutting head and the cutting head of the coarse bag cutting unit, and the cutting head is driven to rotate synchronously when the screening cylinder rotates. The cutting head and the inner side plate work together to quickly cut the irregular surface of the soft plastic bag, thus effectively improving the bag opening efficiency and cutting effect.

[0043] The beneficial effects of adopting the above-mentioned further solution are: the coarse cutting and bag breaking device is equipped with a pressure reducer, which makes the blade teeth fit the bag surface, adapts to the irregular surface of the soft plastic bag material, reduces uneven wear of the blade edge, and improves cutting efficiency and the service life of the cutting head.

[0044] Furthermore, the inner side plate is a plurality of straight plates evenly distributed on the inner wall of the screening cylinder; or the inner side plate is a segmented straight plate, respectively disposed on the inner wall of the coarse material zone and / or fine material zone of the screening cylinder.

[0045] Furthermore, the coarse material zone is provided with coarse sieve holes, and the fine material zone is provided with fine sieve holes, with a receiving tray 204 below each sieve hole; the sieve cylinder is inclined at 3° to 25°, with the inlet higher than the outlet.

[0046] Furthermore, the drive device 203 includes: a motor 2031, a reduction gearbox 2032, and a rotating wheel 2033. The reduction gearbox is driven by a chain, belt, or gear set. The control unit is equipped with a frequency converter for automatically adjusting the speed according to changes in motor voltage.

[0047] The advantages of adopting the above solution are: the automatic bag unloading equipment has a compact overall structure, is easy to operate, requires no additional dustproof devices, and reduces energy consumption and production costs.

[0048] Furthermore, it also includes a primary bag-breaking device 400, which includes: a feeding plate 401 with baffles 4011 on both sides; a roller cutter 402, which consists of a roller 4021 and staggered blades 4022, with the cutter head extending out of the feeding plate surface to cut the bag; a vibration device 403, which generates excitation force through the rotation of an eccentric block, driving the feeding plate with a spring 4031 to vibrate; and a metal recycling mechanism 404, including a magnetic suction part 4041 and a rotator 4042, for adsorbing and removing metal materials.

[0049] The beneficial effect of adopting the above-mentioned further solution is that the initial cutting and bag breaking device can replace manual cutting and screening work, effectively improving production efficiency.

[0050] Furthermore, the metal recycling mechanism also includes a deflector (not shown in the figure) for removing metal materials adsorbed by the magnetic suction part; or, the metal recycling mechanism also includes a rotating belt 4044, which is disposed on the outer periphery of the magnetic suction part, and the rotator drives the rotating belt to move synchronously with the magnetic suction part, and the distance between the two is adjustable.

[0051] The beneficial effect of adopting the above-mentioned further solution is that the metal recycling mechanism is used to adsorb the metal material initially divided by the initial cutting and bag breaking device, so as to avoid the metal material entering the screen cylinder and damaging the blade. If the metal material enters the screen cylinder, it will also damage the screen cylinder, and in severe cases, the entire screen cylinder will be scrapped.

[0052] The beneficial effects of this utility model are: by setting up a primary bag-breaking device, a coarse bag-breaking device, and a fine bag-breaking device, this utility model provides a graded cutting system for bags (such as roller cutting → cylindrical blade cutting → intermediate blade supplementary cutting), which improves the bag-opening efficiency, reduces the situation of bags remaining inside the packaging bag, and solves the problem that the existing technology cannot fully disassemble the bags.

[0053] The grading and cutting system of this utility model automatic bag opening and unloading equipment includes a primary bag-breaking device that can perform preliminary cutting on the bags entering the screening cylinder; a coarse bag-breaking device that can further cut the coarse material; and a fine bag-breaking device that can supplement the cutting of the fine material. The grading and cutting system can be used to cut bags of various specifications in a reasonable way, thus improving the bag opening and unloading efficiency.

[0054] In the description of this utility model, it should be understood that the terms "parallel", "rotation", "radial", "circumferential", "vertical", "up", "down", "front", "rear", "axial", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0055] Furthermore, the terms "first," "second," "third," "fourth," "fifth," "sixth," and "seventh" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," "third," "fourth," "fifth," "sixth," or "seventh" may explicitly or implicitly include at least one of those features. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "fixing," and "hinged" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0059] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A fine-cutting and bag-breaking device, wherein the fine-cutting and bag-breaking device is installed on the screening cylinder of an automatic bag-unloading and unloading equipment, characterized in that: The bag-cutting and breaking device includes an inner side plate, a retaining ring, a bag-cutting unit, and a sliding groove. The bag-cutting unit and the sliding groove are electrically connected and are both installed on the outer wall of the screening cylinder. The cutting head of the bag-cutting unit extends into the internal space of the screening cylinder. The inner side plate is arranged between adjacent cutting heads. The retaining ring is located on the working side of the cutting head.

2. The fine-cutting and bag-breaking device according to claim 1, characterized in that: The fine-cut bag unit includes a drive motor electrically connected to a sliding groove; a cutting blade driven by the motor, the blade having a tooth structure with a rake angle of 5° to 25°; the surface of the tooth is provided with grooves or surface texture structure.

3. The fine-cutting and bag-breaking device according to claim 1, characterized in that: The height of the retaining ring is less than the height of the inner side plate.

4. An automatic bag-opening and unloading device, characterized in that, The device includes a support platform, a screening cylinder, a driving device, and a fine-cutting and bag-breaking device as described in any one of claims 1 to 3. The screening cylinder is disposed on the support platform and is driven to rotate by the driving device. The screening cylinder is divided into a coarse material zone and a fine material zone, with an inlet and an outlet at its two ends, respectively. The fine-cutting and bag-breaking device is disposed in the fine material zone of the screening cylinder to cut small bags with cylinder blades.

5. An automatic bag-opening and unloading device according to claim 4, characterized in that: It also includes a coarse-cutting and bag-breaking device, which includes an inner side plate, a coarse-cutting unit, a pressure reducer, and a sliding groove. The coarse-cutting unit and the sliding groove are installed on the outer wall of the screening cylinder. The coarse-cutting unit is electrically connected to the sliding groove, and its cutting head extends into the screening cylinder. The inner side plate is set between adjacent cutting heads. The pressure reducer is a buffer spring structure and is connected to the cutting head to make it elastic. The coarse-cutting unit includes a motor and a blade with a negative chamfer structure. The side wall of the blade is provided with a through hole.

6. The automatic bag-opening and unloading equipment according to claim 5, characterized in that: The inner side plate consists of multiple straight plates evenly distributed on the inner wall of the screening cylinder; or the inner side plate consists of segmented straight plates, which are respectively set on the inner wall of the coarse material zone and / or fine material zone of the screening cylinder.

7. An automatic bag-opening and unloading device according to claim 4, characterized in that: The coarse material zone is equipped with coarse sieve holes, and the fine material zone is equipped with fine sieve holes. A receiving tray is provided below each sieve hole. The sieve cylinder is inclined at 3° to 25°, and the inlet is higher than the outlet.

8. An automatic bag-opening and unloading device according to claim 4, characterized in that: The drive unit includes: a motor, a gearbox, and a pulley; the gearbox is driven by a chain, belt, or gear set; and a control unit equipped with a frequency converter for automatically adjusting the speed according to changes in motor voltage.

9. An automatic bag-opening and unloading device according to claim 4, characterized in that: It also includes a primary bag-breaking device, which comprises: a feeding plate with baffles on both sides; a roller cutter consisting of a roller and staggered blades, with the cutter head extending out of the feeding plate surface to cut the bag; a vibration device that generates excitation force through the rotation of an eccentric block, driving the feeding plate with springs to vibrate; and a metal recycling mechanism, including a magnetic suction part and a rotator, for adsorbing and removing metal materials.

10. An automatic bag-opening and unloading device according to claim 9, characterized in that: The metal recycling mechanism further includes a deflector for removing metal materials adsorbed by the magnetic suction part; or, the metal recycling mechanism further includes a rotating belt disposed on the outer periphery of the magnetic suction part, the rotating belt being driven by a rotator to move synchronously with the magnetic suction part, and the distance between the two being adjustable.

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