Bag breaking and feeding system

Abstract

The utility model discloses a bag breaking and feeding system. The system comprises a material conveying device; the conveying belt is connected with an outlet of the material conveying device, and a bag breaking rotary cutter set is arranged on the conveying belt and used for scratching a material bag of the materials; the screening device is used for receiving the materials output by the conveying belt, and the screening device is used for separating the material bags from the powder materials; the hopper is arranged below the screening device and is used for receiving the powder; the guide chute is hinged with the outlet of the hopper through a connecting piece; and the blanking driving piece is connected with the connecting piece and drives the guide chute to swing. Compared with the prior art, the bag breaking and feeding system has the advantages that the dependence on manpower can be reduced, the labor cost is reduced, the production efficiency is improved, and meanwhile, the quality of the working environment is improved.

Description

Technical Field

[0001] The present application relates to the technical field of environmental protection water treatment, and more specifically, to a bag breaking and feeding system. Background Art

[0002] In the field of environmentally friendly water treatment, chemical dosing is a crucial step in ensuring water quality meets standards. Depending on the specific treatment requirements, different types of chemicals are required during the water treatment process. Solid powdered (granular) chemicals are widely used in some water plants due to their convenient storage and long shelf life. However, the use of solid powdered (granular) chemicals presents a series of challenges that need to be addressed.

[0003] Currently, the transportation and dosing of solid powdered (granular) pharmaceuticals from storage to dosing rooms relies primarily on manual labor. First, manual handling is labor-intensive and inefficient, making it unsuitable for large-scale or emergency situations. Second, during bag opening and unpacking, some pharmaceuticals may generate dust and hazardous substances, which not only affects on-site environmental hygiene but also poses a risk to the health of operators.

[0004] Therefore, there is an urgent need for a bag breaking and feeding system that can reduce dependence on manual labor, reduce labor costs, improve production efficiency and improve the quality of the working environment. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides a bag breaking and feeding system, which can reduce dependence on manual labor, reduce labor costs, improve production efficiency and improve the quality of the working environment.

[0006] The technical solutions provided in this application are as follows:

[0007] A bag breaking and feeding system, comprising:

[0008] Material conveying devices;

[0009] A conveyor belt connected to the outlet of the material conveying device, wherein the conveyor belt is provided with a bag-breaking rotary knife group, and the bag-breaking rotary knife group is used to cut the material bag of the material;

[0010] a screening device for receiving the material outputted by the conveyor belt, the screening device being used to separate the material bags and powder;

[0011] A hopper provided below the screening device and used for receiving the powder;

[0012] a material guide chute hingedly connected to the outlet of the hopper via a connecting piece;

[0013] A material discharge driving member connected to the connecting member drives the material guide trough to swing.

[0014] Preferably, the material conveying device comprises:

[0015] A material frame for placing materials, wherein a lifting mechanism for driving the materials to rise and fall in a vertical direction is provided at the bottom of the material frame;

[0016] A conveying channel is provided at one end of the top of the material frame, the conveying channel is inclined downward, and the outlet of the conveying channel is used to communicate with the conveyor belt;

[0017] A pushing mechanism is provided at one end of the material frame away from the conveying channel, and the pushing mechanism is used to push the material into the conveying channel.

[0018] Preferably, the material conveying device further includes:

[0019] A rotating roller is arranged at the bottom of the conveying channel, and the rotating shaft of the rotating roller is rotatably connected to both sides of the conveying channel respectively. A plurality of the rotating rollers are arranged in sequence and spaced apart along the length direction of the conveying channel.

[0020] Preferably, the cross-section of the conveying channel gradually decreases from the material frame toward the conveyor belt.

[0021] Preferably, the bag-breaking rotary knife assembly comprises:

[0022] a first roller disposed above the conveyor belt, wherein a first blade is disposed on the circumference of the first roller;

[0023] a second roller disposed below the conveyor belt, wherein a gap is formed between the second roller and the first roller for materials to pass through, and a second blade is disposed on the circumference of the second roller;

[0024] an avoidance groove provided on the conveyor belt for the second blade to pass through;

[0025] A bag breaking drive mechanism for driving the first roller and the second roller to rotate in opposite directions.

[0026] Preferably, the bag breaking drive mechanism comprises: a first driving member, a driving wheel and a transmission belt;

[0027] The first driving member is used to drive the driving wheel to rotate, the transmission belt is wrapped around the outer circumference of the driving wheel and the second roller, the first roller is arranged on the outside of the transmission belt, and the outer circumference of the first roller is in contact with the transmission belt.

[0028] Preferably, the screening device comprises:

[0029] a rotary mesh screen, wherein the outer circumferential surface of the rotary mesh screen is provided with mesh holes for filtering the powder at intervals;

[0030] an inlet disposed at the front end of the rotary mesh screen and configured to communicate with the outlet of the conveyor belt;

[0031] An outlet provided at the rear end of the rotary mesh screen for outputting the material bag;

[0032] a spiral conveying member disposed in the rotary screen, the spiral conveying member extending from the inlet to the outlet;

[0033] A second driving member is used to drive the rotary screen to rotate axially.

[0034] Preferably, the hopper is arranged below the rotary mesh screen, and the length of the feed port of the hopper is greater than the length of the rotary mesh screen, and the inner diameter of the hopper gradually decreases from the feed port to the powder outlet.

[0035] Preferably, it also includes:

[0036] A waste bag collecting mechanism is communicated with the outlet and is used to receive the material bag.

[0037] Preferably, it also includes:

[0038] A housing, wherein the conveyor belt, the bag-breaking rotary knife group, and the screening device are all arranged inside the housing, and the hopper is arranged at the bottom of the housing;

[0039] a dust removal port provided on the top of the housing;

[0040] A dust removal device is arranged on the outside of the shell and is used to communicate with the dust removal port.

[0041] The bag breaking and feeding system provided by the present invention is provided with a material conveying device, a conveyor belt, a bag breaking rotary knife group and a screening device, wherein the material conveying device is used to convey materials, the conveyor belt is connected to the outlet of the material conveying device, the conveyor belt is used to receive materials and convey the materials to the screening device, the bag breaking rotary knife group is arranged on the conveyor belt, the bag breaking rotary knife group is used to cut the material bags of materials, the screening device is used to receive materials conveyed by the conveyor belt, and the screening device is used to separate the material bags and powder materials. Secondly, a hopper, a material guide trough and a material discharge drive assembly are also provided, wherein the hopper is arranged below the screening device and is used to receive the powder materials separated by the screening device, the material guide trough is hinged to the outlet of the hopper by a connecting piece, the material guide trough guides the powder materials and conveys them to the mixing tank for subsequent processes, and in order to facilitate the switching of different mixing tanks, a material discharge drive assembly is also provided, the material discharge drive assembly is connected to the connecting piece and is used to drive the material guide trough to swing so as to be suitable for different mixing tanks at different positions, which is more convenient and improves production efficiency. It can be seen that compared with the prior art, the bag breaking and feeding system in the embodiment of the utility model can reduce dependence on manual labor, reduce labor costs, improve production efficiency and improve the quality of the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0043] Figure 1 A schematic structural diagram of a bag breaking and feeding system provided in an embodiment of the present utility model;

[0044] Figure 2 A schematic structural diagram of a bag breaking rotating assembly provided in an embodiment of the present utility model.

[0045] Figure numerals: 1. Material conveying device; 2. Conveyor belt; 3. Bag-breaking rotary knife group; 4. Screening device; 5. Hopper; 6. Material guide chute; 7. Waste bag collecting mechanism; 8. Shell; 9. Dust removal device; 11. Material frame; 12. Lifting mechanism; 13. Conveying channel; 14. Pushing mechanism; 15. Rotating roller; 31. First roller; 32. Second roller; 33. First driving member; 34. Driving wheel; 35. Transmission belt. DETAILED DESCRIPTION

[0046] In order to help those skilled in the art better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0047] It should be noted that when an element is referred to as being “fixed on” or “set on” another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0048] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0050] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0051] The embodiments of the present invention are written in a progressive manner.

[0052] like Figure 1 and Figure 2As shown, an embodiment of the utility model provides a bag breaking and feeding system, comprising: a material conveying device 1; a conveyor belt 2 connected to the outlet of the material conveying device 1, a bag breaking rotary knife group 3 is provided on the conveyor belt 2, and the bag breaking rotary knife group 3 is used to cut the material bags; a screening device 4 for receiving the material output by the conveyor belt 2, and the screening device 4 is used to separate the material bags and powder; a hopper 5 arranged below the screening device 4 for receiving the powder; a material guide trough 6 hinged to the outlet of the hopper 5 through a connecting piece; and a material discharge driving piece connected to the connecting piece to drive the material guide trough 6 to swing.

[0053] Currently, the transportation and dosing of solid powdered (granular) pharmaceuticals from storage to dosing rooms relies primarily on manual labor. First, manual handling is labor-intensive and inefficient, making it unsuitable for large-scale or emergency situations. Second, during bag opening and unpacking, some pharmaceuticals may generate dust and hazardous substances, which not only affects on-site environmental hygiene but also poses a risk to the health of operators.

[0054] The bag breaking and feeding system provided by the present invention is firstly provided with a material conveying device 1, a conveyor belt 2, a bag breaking rotary knife group 3 and a screening device 4, wherein the material conveying device 1 is used to convey materials, the conveyor belt 2 is connected to the outlet of the material conveying device 1, the conveyor belt 2 is used to receive materials and convey the materials to the screening device 4, the bag breaking rotary knife group 3 is arranged on the conveyor belt 2, the bag breaking rotary knife group 3 is used to cut the material bags, the screening device 4 is used to receive the materials conveyed by the conveyor belt 2, and the screening device 4 is used to separate the material bags and powder. Secondly, a hopper 5, a guide trough 6 and a feeding drive assembly are also provided, wherein the hopper 5 is provided below the screening device 4 for receiving the powder separated by the screening device 4, the guide trough 6 is hinged to the outlet of the hopper 5 by a connector, the guide trough 6 guides the powder and transports it to the mixing tank for subsequent processes, and in order to facilitate switching between different mixing tanks, a feeding drive assembly is also provided, which is connected to the connector and is used to drive the guide trough 6 to swing, so as to be suitable for different mixing tanks at different positions, which is more convenient and improves production efficiency. It can be seen that compared with the prior art, the bag breaking and feeding system in the embodiment of the utility model can reduce dependence on manual labor, reduce labor costs, improve production efficiency and improve the quality of the working environment.

[0055] On the one hand, the bag breaking and feeding system provided in this application does not rely on manual work to complete the bag breaking, screening and feeding processes, which is more efficient and can meet the needs of large-scale or emergency situations; on the other hand, since the participation of operators is reduced, the possibility of harm to the health of operators is also reduced.

[0056] Furthermore, the unloading drive mechanism in the embodiment of the present invention is used to drive the connecting piece and the guide trough 6, and the connecting piece is driven to move back and forth from the first unloading point to the second unloading point by the unloading drive mechanism. There are two stirring tanks, and the two stirring tanks are respectively arranged below the first unloading point and the second unloading point. The guide trough 6 is driven to rotate by the unloading drive mechanism, thereby making unloading from different stirring tanks more convenient.

[0057] Furthermore, the hopper 5 in the embodiment of the present invention is specifically a vibrating hopper 5, and the hopper 5 can be self-cleaned by vibration during the process of unloading.

[0058] In the above structure, as one of the embodiments, the material conveying device 1 in the embodiment of the present utility model includes a material frame 11, a conveying channel 13 and a pushing mechanism 14, wherein the material frame 11 is used to place materials, and a lifting mechanism 12 is provided at the bottom of the material frame 11. The lifting mechanism 12 is used to drive the material to rise and fall in the vertical direction, and the conveying channel 13 is provided at one end of the top of the material frame 11. The conveying channel 13 is inclined downward, and the outlet of the conveying channel 13 is used to communicate with the conveyor belt 2, and the material is conveyed to the conveyor belt 2 through the conveying channel 13. The pushing mechanism 14 is provided at one end of the material frame 11 away from the conveying channel 13. When the lifting mechanism 12 lifts the material to the top of the material frame 11, the pushing mechanism 14 is used to push the material into the conveying channel 13. Under the action of gravity, the material enters the conveyor belt 2 along the conveying channel 13, thereby completing the material feeding process.

[0059] In the above structure, in order to facilitate the transportation of materials in the conveying channel 13 and avoid material accumulation, the bottom of the conveying channel 13 in the embodiment of the utility model can be a slide, that is, the friction force at the bottom of the conveying channel 13 can be reduced to facilitate the transportation of materials.

[0060] As a preferred embodiment, the material conveying device 1 in the embodiment of the present invention further includes rotating rollers 15, which are disposed at the bottom of the conveying channel 13. The rotating shafts of the rotating rollers 15 are rotatably connected to both sides of the conveying channel 13. The plurality of rotating rollers 15 are sequentially spaced along the length of the conveying channel 13. When material enters the conveying channel 13, the material moves along the direction of the conveying channel 13 under the action of gravity, and the rotating rollers 15 rotate simultaneously.

[0061] Furthermore, as one of the implementation methods, in the bag breaking and feeding system in the embodiment of the present invention, the cross-sectional size of the conveying channel 13 gradually decreases from the material frame 11 toward the conveyor belt 2.

[0062] In the above structure, the bag-breaking rotary knife group 3 is used to cut the material bag. As one of the implementation methods, the bag-breaking rotary knife group 3 in the embodiment of the utility model includes a first roller 31, a first blade, a second roller 32, a second blade and a bag-breaking drive mechanism, wherein the first roller 31 is arranged above the conveyor belt 2, and the first blade is arranged on the circumference of the first roller 31. The second roller 32 is arranged below the conveyor belt 2, and the second blade is arranged on the circumference of the second roller 32. A gap for material to pass through is formed between the first roller 31 and the second roller 32. An avoidance groove is provided on the conveyor belt 2 to facilitate the second blade to pass through the avoidance groove to cut the material bag. The bag-breaking drive mechanism is used to drive the first roller 31 and the second roller 32 to rotate in opposite directions.

[0063] Specifically, when the material is being conveyed on the conveyor bag, when the material passes through the gap between the first roller 31 and the second roller 32, the bag breaking drive mechanism drives the first roller 31 and the second roller 32 to rotate in opposite directions, driving the first blade and the second blade to cut open the material bag, which is then conveyed by the conveyor belt 2 to the screening device for separation.

[0064] In the above structure, as one of the implementation modes, the conveyor belt 2 in this practical embodiment is preferably a slide, and the avoidance groove is provided at the bottom of the slide.

[0065] Furthermore, the gap between the first roller 31 and the second roller 32 can be adjusted. Based on the type of conveyed material, the gap between the first roller 31 and the second roller 32 can be adjusted appropriately.

[0066] Furthermore, the bag breaking drive mechanism in the embodiment of the present invention is used to drive the first roller 31 and the second roller 32 to rotate in opposite directions. The bag breaking drive mechanism can drive the first roller 31 and the second roller 32 to rotate in opposite directions respectively through two driving structures, but this structure is large and difficult to control.

[0067] As one of the preferred embodiments, the bag breaking drive mechanism in the embodiment of the present utility model includes a first driving member 33, a driving wheel 34 and a transmission belt 35, wherein the output shaft of the first driving member 33 is connected to the driving wheel 34, and the first driving member 33 is used to drive the driving wheel 34 to rotate, and the transmission belt 35 is arranged around the outer circumference of the driving wheel 34 and the second roller 32, and the first roller 31 is arranged on the outside of the transmission belt 35, and the outer circumference of the first roller 31 is in contact with the transmission belt 35. During the rotation of the driving wheel 34, the second roller 32 is driven to rotate through the transmission belt 35, thereby driving the first roller 31 to rotate, and the rotation direction of the first roller 31 is opposite to the rotation direction of the second roller 32.

[0068] Furthermore, as one embodiment, the outer circumferential surfaces of the first roller 31 and the second roller 32 in the embodiment of the present invention are provided with mounting grooves for use with the transmission belt 35 .

[0069] Furthermore, the first blade in the embodiment of the present invention is arranged on the outer circumferential surface of the first roller 31. There can be one first blade, or there can be at least two first blades, and the first blades are evenly spaced and arranged on the outer circumferential surface of the first roller 31.

[0070] In addition, one second blade may be provided, or at least two second blades may be provided, and the second blades are evenly spaced and arranged on the outer circumference of the second roller 32. The arrangement of the first blade and the second blade may be selected based on the usage situation.

[0071] In the above structure, as one of the embodiments, the screening device 4 in the embodiment of the present invention includes a rotating screen, an inlet, an outlet, a spiral conveyor and a second driving member, wherein sieve holes are arranged at intervals on the outer circumferential surface of the rotating screen, the sieve holes are used to filter powder, the front end of the rotating screen is provided with an inlet, the inlet is used to communicate with the outlet of the conveyor belt 2, the outlet is provided at the rear end of the rotating mesh screen, the outlet is used to output the separated material bags, a spiral conveyor is provided in the rotating mesh screen, the spiral conveyor extends from the inlet to the outlet, the second driving member is used to drive the rotating mesh screen to rotate axially, the powder enters the hopper 5 through the sieve holes, and the material bag is output from the outlet through the spiral conveyor.

[0072] Furthermore, as one of the embodiments, the hopper 5 in the embodiment of the present invention is arranged below the rotating mesh screen, the length of the feed port of the hopper 5 is greater than the length of the rotating mesh screen, and the inner diameter of the hopper 5 gradually decreases from the feed port to the powder outlet.

[0073] Furthermore, as one of the implementation modes, the bag breaking and feeding system in the embodiment of the present invention further includes: a waste bag collecting mechanism connected to the outlet and used for receiving the material bags.

[0074] Furthermore, as one of the implementation methods, the bag breaking and feeding system shell, the conveyor belt 2, the bag breaking rotary knife group 3 and the screening device 4 in the embodiment of the utility model are all arranged inside the shell, and the hopper 5 is arranged at the bottom of the shell; a dust removal port is arranged at the top of the shell; and a dust removal device is arranged on the outside of the shell and is connected to the dust removal port, and dust removal is performed through the dust removal device.

[0075] The bag breaking and feeding system in this application also includes a controller, which uses a program to set the required amount of material, and lifts it to the entrance of the conveying channel through a lifting mechanism. The controller sequentially controls the controllable pushing mechanism to push the material into the conveying channel according to the feeding feedback from the rear-section material guide trough. The feeding amount each time is controlled based on the net weight of the material as the input amount.

[0076] The bag breaking and feeding system in this application is also provided with a monitoring module, which is used to detect the operating fault status of the lifting mechanism, pushing mechanism, bag breaking rotary knife group and first driving member, dust removal device, etc. The monitoring module can also detect the quantity of bag broken materials.

[0077] Different mixing tanks correspond to solutions of different concentrations. The number of material bags required for the corresponding mixing tank is pre-set in the system. When the target amount of material is reached in the tank, the controller controls the unloading drive mechanism to drive the guide chute to another tank to feed the set amount of material until the system setting requirements are met and the feeding stops.

[0078] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bag breaking and feeding system, characterized in that: include: Material conveying device (1); A conveyor belt (2) connected to the outlet of the material conveying device (1), wherein a bag-breaking rotary knife group (3) is provided on the conveyor belt (2), and the bag-breaking rotary knife group (3) is used to cut the material bag of the material; a screening device (4) for receiving the material output by the conveyor belt (2), wherein the screening device (4) is used to separate the material bags and powder; A hopper (5) provided below the screening device (4) for receiving the powder; A material guide chute (6) hingedly connected to the outlet of the hopper (5) via a connecting piece; A material discharge driving member connected to the connecting member and driving the material guide trough (6) to swing.

2. The bag breaking and feeding system according to claim 1, characterized in that: The material conveying device (1) comprises: A material frame (11) for placing materials, wherein a lifting mechanism (12) is provided at the bottom of the material frame (11) for driving the materials to rise and fall in a vertical direction; A conveying channel (13) is provided at one end of the top of the material frame (11), the conveying channel (13) is inclined downward, and an outlet of the conveying channel (13) is used to communicate with the conveyor belt (2); A material pushing mechanism (14) is provided at one end of the material frame (11) away from the conveying channel (13), and the material pushing mechanism (14) is used to push the material into the conveying channel (13).

3. The bag breaking and feeding system according to claim 2, characterized in that: The material conveying device (1) further comprises: A rotating roller (15) is provided at the bottom of the conveying channel (13), wherein the rotating shaft of the rotating roller (15) is rotatably connected to both sides of the conveying channel (13) respectively, and a plurality of the rotating rollers (15) are arranged in parallel and spaced apart along the length direction of the conveying channel.

4. The bag breaking and feeding system according to claim 3, characterized in that: The cross section of the conveying channel (13) gradually decreases in the direction from the material frame (11) toward the conveyor belt (2).

5. The bag breaking and feeding system according to any one of claims 1 to 4, characterized in that: The bag-breaking rotary knife assembly (3) comprises: a first roller (31) disposed above the conveyor belt (2), wherein a first blade is disposed in the circumference of the first roller (31); a second roller (32) disposed below the conveyor belt (2), wherein a gap for materials to pass through is formed between the second roller (32) and the first roller (31), and a second blade is disposed on the circumference of the second roller (32); An avoidance groove provided on the conveyor belt (2) for the second blade to pass through; A bag breaking drive mechanism for driving the first roller (31) and the second roller (32) to rotate in opposite directions.

6. The bag breaking and feeding system according to claim 5, characterized in that: The bag breaking drive mechanism comprises: a first drive member (33), a driving wheel (34) and a transmission belt (35); The first driving member (33) is used to drive the driving wheel (34) to rotate, the transmission belt (35) is wrapped around the outer circumference of the driving wheel (34) and the second roller (32), the first roller (31) is arranged on the outside of the transmission belt (35), and the outer circumference of the first roller (31) is in contact with the transmission belt (35).

7. The bag breaking and feeding system according to any one of claims 1 to 4, characterized in that: The screening device (4) comprises: a rotary mesh screen, wherein the outer circumferential surface of the rotary mesh screen is provided with mesh holes for filtering the powder at intervals; an inlet disposed at the front end of the rotary mesh screen and configured to communicate with the outlet of the conveyor belt; An outlet provided at the rear end of the rotary mesh screen for outputting the material bag; a spiral conveying member disposed in the rotary screen, the spiral conveying member extending from the inlet to the outlet; A second driving member is used to drive the rotary screen to rotate axially.

8. The bag breaking and feeding system according to claim 7, characterized in that: The hopper (5) is arranged below the rotary mesh screen, and the length of the feed port of the hopper (5) is greater than the length of the rotary mesh screen. In the direction from the feed port to the powder outlet, the inner diameter of the hopper gradually decreases.

9. The bag breaking and feeding system according to claim 7, characterized in that: Also includes: A waste bag collecting mechanism (7) is communicated with the outlet and is used to receive the material bag.

10. The bag breaking and feeding system according to any one of claims 1 to 4, characterized in that: Also includes: A housing (8), wherein the conveyor belt, the bag-breaking rotary knife group, and the screening device are all arranged inside the housing, and the hopper is arranged at the bottom of the housing; a dust removal port provided on the top of the housing; A dust removal device (9) is provided on the outside of the shell and is used to communicate with the dust removal port.

Images