Urban harmful weed recognition, classification and resourceful treatment system and method

Abstract

The invention relates to an urban harmful weed recognition, classification and resourceful treatment system and method, and relates to the technical field of ecological environment. The system comprises a biological safety pretreatment unit for inactivating harmful substances of weeds and carding the weeds, a classification unit for identifying and classifying different types of weeds, and a resource conversion unit for respectively converting the different types of weeds into corresponding organic fertilizers, the biological safety pretreatment unit comprises an inactivation barrel and a carding barrel rotationally arranged in the inactivation barrel, and a plurality of straight bulges extending in the axial direction of the carding barrel are uniformly distributed on the inner wall of the carding barrel. According to the system, the biological safety pretreatment unit, the classification unit and the resource conversion unit are arranged, the intelligent identification technology is applied to classification treatment of harmful weeds, a complete intelligent treatment industry chain is established, ecological risks in the treatment process are effectively controlled, and remarkable economic and environmental benefits are achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of ecological environment, and specifically relates to a system and method for identifying, classifying and resourcefully treating urban harmful weeds. Background Art

[0002] With the rapid advancement of the global urbanization process, the urban green area has been continuously expanding. However, at the same time, the invasion and spread of alien harmful weeds have become increasingly severe. These harmful weeds not only affect the aesthetic degree of the urban landscape, but also pose a serious threat to the balance of the urban ecosystem, such as competing with native plants for nutrients, water and light resources, destroying biodiversity, and even spreading diseases and pests. Therefore, effectively managing and controlling harmful weeds has become an important task in urban ecological governance. As a sustainable treatment method, resource utilization has gradually received extensive attention. However, to achieve the scientific disposal and resource utilization of harmful weeds, a series of technical problems such as classification and identification, biosafety treatment, efficient conversion and quality control need to be solved.

[0003] The existing treatment systems mainly rely on manual identification, which is not only inefficient, but also easily affected by subjective factors, resulting in inaccurate classification, which directly affects the pertinence and efficiency of subsequent treatment steps; and in the process of treating harmful weeds, there are no effective biosafety guarantee measures, and it is very easy to cause secondary spread of weeds or release of harmful substances, thus increasing ecological risks.

[0004] Therefore, we provide a system and method for identifying, classifying and resourcefully treating urban harmful weeds to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a system and method for identifying, classifying and resourcefully treating urban harmful weeds in view of the problems in the background art.

[0006] The present invention achieves the above purpose through the following technical solutions:

[0007] An urban harmful weed identification, classification and resource treatment system, comprising a biosafety pretreatment unit for inactivating harmful substances in weeds and combing the weeds, a classification unit for identifying and classifying different types of weeds, and a resource conversion unit for converting different types of weeds into corresponding organic fertilizers respectively. The biosafety pretreatment unit includes an inactivation cylinder body and a combing cylinder body rotatably arranged in the inactivation cylinder body. A plurality of straight protrusions extending along the axial direction of the combing cylinder body are uniformly arranged on the inner wall of the combing cylinder body; the classification unit includes a classification box body, an annular conveying component slidably arranged in the classification box body, a linear conveying component located inside the annular conveying component, and an identification component located at the bottom of the linear conveying component. A circle of adsorption components for adsorbing the identified weeds is coated on the outer surface of the annular conveying component. The identified weeds are conveyed by the annular conveying component to the upper part of the linear conveying component and then fall, and are conveyed by the linear conveying component to the resource conversion unit; the resource conversion unit includes a mechanical crushing component and a plurality of fermentation conversion components located below the mechanical crushing component. An XY platform for driving the fermentation conversion components to move in a plane to receive the crushed materials of the mechanical crushing component is arranged at the bottom of the plurality of fermentation conversion components.

[0008] As a further optimized solution of the present invention, an annular space is formed between the inactivation cylinder body and the combing cylinder body, and a plurality of groups of electric heating elements are uniformly arranged along the axis of the inactivation cylinder body in the annular space.

[0009] As a further optimized solution of the present invention, bearing seats are arranged at both ends of the combing cylinder body, and a first driving mechanism for driving its rotation is arranged in the middle of the combing cylinder body. The first driving mechanism includes a gear ring fixedly sleeved on the combing cylinder body, a gear meshing with the gear ring, and a first driving part for driving the gear to rotate. The first driving part is fixed on the top of the inactivation cylinder body.

[0010] As a further optimized solution of the present invention, the biosafety pretreatment unit further includes a pushing component for pushing the combed weeds in the combing cylinder body into the classification unit. The pushing component includes a pushing plate and a second driving part for driving the pushing plate to move. The second driving part is fixed on the inactivation cylinder body through a bracket.

[0011] As a further optimized solution of the present invention, the annular conveying component includes a frame body and four roller supports arranged in a matrix and rotatably arranged in the frame body. A third driving part for driving is arranged on the side of one of the roller supports. A conveyor belt is coated on the four roller supports, and a plurality of air holes are arranged on the conveyor belt in a dot matrix and are evenly distributed.

[0012] As a further optimized solution of the present invention, the adsorption assembly includes an adsorption cylinder fixed on the outer surface of the conveyor belt. A plurality of adsorption holes are provided on the adsorption cylinder. One end of the adsorption cylinder is provided with a solenoid valve, and a rubber abutting block is provided at the end of the solenoid valve. A metal sheet is provided at the other end of the adsorption cylinder.

[0013] As a further optimized solution of the present invention, a ring-shaped metal plate cooperating with the metal sheet is provided inside one end plate of the frame body. Ring-shaped air grooves and air outlet pipes are respectively provided on both sides of the other end plate of the frame body. The air outlet pipe is externally connected to a vacuum adsorption device, and the rubber abutting block abuts against the ring-shaped air groove.

[0014] As a further optimized solution of the present invention, a second driving mechanism for driving the ring-shaped conveying assembly to reciprocate to flatten weeds is provided on the side of the ring-shaped conveying assembly. The second driving mechanism includes a disc and a fourth driving member for driving the disc to rotate. A connecting rod is hinged at the edge of the disc, and the other end of the connecting rod is hinged to the end of the frame body.

[0015] As a further optimized solution of the present invention, dust suction assemblies for removing impurities in weeds are integrated on both end plates of the classification box body. The dust suction assembly includes a plurality of air suction branch pipes distributed at equal intervals and an air suction main pipe communicated with the air suction branch pipes. A plurality of dust suction holes are provided on the air suction branch pipes at equal intervals.

[0016] The present invention also provides a method for identifying, classifying and resourcefully treating urban harmful weeds, including the following steps:

[0017] S1. First, inactivate the weeds through the biosafety pretreatment unit to eliminate harmful substances and comb the weeds for the subsequent treatment of the classification unit. Specifically: place the harmful weeds into the combing cylinder through the feeding port at the end of the combing cylinder, control the rotation of the combing cylinder to make the orientation of the weeds tend to be consistent, and during this process, perform high-temperature inactivation treatment on the weeds through the inactivation cylinder;

[0018] S2. Then, identify and classify different types of weeds through the classification unit. Specifically: flatten the weeds inside through the reciprocating ring-shaped conveying assembly, identify the weeds one by one through the identification component, adsorb the weeds of the same type through the adsorption component, convey them above the linear conveying component through the ring-shaped conveying assembly and let them fall, and then convey them to the resource conversion unit through the linear conveying component;

[0019] S3. Finally, convert different types of weeds into corresponding organic fertilizers through the resource conversion unit. Specifically: crush the weeds through the mechanical crushing component, drive the fermentation conversion component corresponding to this type of weed to move to the mechanical crushing component through the XY platform to receive the crushed material and perform fermentation treatment.

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

[0021] 1. The present invention sets up a biosafety pretreatment unit, a classification unit, and a resource conversion unit, applies intelligent recognition technology to the classification and treatment of harmful weeds, establishes a complete intelligent treatment industrial chain, realizes the full-process automatic management from collection to end products, effectively controls the ecological risks in the treatment process, effectively reduces the treatment cost, and has significant economic and environmental benefits.

[0022] 2. By setting up an inactivation cylinder and a combing cylinder, the present invention can align the weeds in the same direction for subsequent identification and classification. Moreover, during the combing process, the weeds are subjected to high-temperature inactivation treatment to kill the germs, pests, and seeds carried by the weeds, avoiding secondary spread and minimizing the risk of biological pollution.

[0023] 3. By setting up an annular conveying component, a linear conveying component, an identification component, and an adsorption component, the present invention can automatically identify and classify different types of weeds one by one, and the weeds can be laid flat on the conveyor belt so that the identification component can take pictures of the weeds from different angles to obtain the comprehensive morphological information of the weeds and improve the accuracy of the identification component. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present invention;

[0025] Figure 2 is a schematic diagram of the structure of the combing cylinder of the present invention;

[0026] Figure 3 is a schematic diagram of the structure of the pusher component of the present invention;

[0027] Figure 4 is a schematic diagram of the classification box and the structures of its internal components of the present invention;

[0028] Figure 5 is a schematic diagram of the structure of the annular conveying component of the present invention Figure 1 ;

[0029] Figure 6 is a schematic diagram of the structure of the annular conveying component of the present invention Figure 2 ;

[0030] Figure 7 is a schematic diagram of the structure of the adsorption component of the present invention;

[0031] Figure 8 is a schematic diagram of the structure of the classification box of the present invention.

[0032] In the figure:

[0033] 1. Inactivation cylinder; 2. Combing cylinder; 201. Straight protrusion; 202. Bearing seat; 203. First drive mechanism; 203a. Ring gear; 203b. Gear; 203c. First drive member; 3. Pushing component; 301. Pushing plate; 302. Second drive member; 4. Classification box body; 401. Suction air branch pipe; 402. Suction air main pipe; 5. Ring-shaped conveying component; 501. Frame; 502. Roller; 503. Third drive member; 504. Conveyor belt; 505. Ring-shaped metal plate; 506. Ring-shaped air duct; 507. Air outlet pipe; 6. Linear conveying component; 7. Identification component; 8. Second drive mechanism; 801. Fourth drive member; 802. Disc; 803. Connecting rod; 9. Adsorption component; 901. Adsorption cylinder; 902. Metal sheet; 903. Solenoid valve; 904. Rubber abutting block; 10. Mechanical crushing component; 11. Fermentation conversion component; 1101. XY platform. Detailed implementation manners

[0034] The following further describes the present application in detail with reference to the accompanying drawings. It is necessary to point out here that the following specific implementation manners are only used to further illustrate the present application and cannot be understood as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0035] Embodiment 1

[0036] To solve the problems that the existing processing system mainly relies on manual identification, has low efficiency, inaccurate classification, and lacks effective biosafety protection measures in the process of dealing with harmful weeds, which easily leads to the secondary spread of weeds or the release of harmful substances, thereby increasing the ecological risk, please refer to Figures 1 - 2 、 Figure 4, a system for identifying, classifying and resourcefully treating harmful weeds in cities provided by the present invention includes a biosafety pretreatment unit for inactivating harmful substances in weeds and combing the weeds, a classification unit for identifying and classifying different types of weeds, and a resource conversion unit for converting different types of weeds into corresponding organic fertilizers respectively. The biosafety pretreatment unit includes an inactivation cylinder 1 and a combing cylinder 2 rotatably arranged in the inactivation cylinder 1; the classification unit includes a classification box body 4, an annular conveying assembly 5 slidably arranged in the classification box body 4, a linear conveying assembly 6 located inside the annular conveying assembly 5, and an identification assembly 7 located at the bottom of the linear conveying assembly 6. The identification assembly 7 can be set as a plurality of high-definition cameras evenly distributed at equal intervals at the bottom of the linear conveying assembly 6. An adsorption assembly 9 for adsorbing the identified weeds is coated on the outer surface of the annular conveying assembly 5. The identified weeds are conveyed by the annular conveying assembly 5 to the upper part of the linear conveying assembly 6 and then fall, and are conveyed by the linear conveying assembly 6 to the resource conversion unit; the resource conversion unit includes a mechanical crushing assembly 10 and a plurality of fermentation conversion assemblies 11 located below the mechanical crushing assembly 10. An XY platform 1101 for driving the fermentation conversion assemblies 11 to move in a plane to receive the crushed material of the mechanical crushing assembly 10 is arranged at the bottom of the plurality of fermentation conversion assemblies 11. The system is mainly used for combing and identifying weeds with stems, such as Digitaria sanguinalis, Eleusine indica, Setaria viridis, Arthraxon hispidus, etc., so that the biosafety pretreatment unit can comb smoothly and the classification unit can identify and classify smoothly.

[0037] As Figure 2 shown, an annular space is formed between the inactivation cylinder 1 and the combing cylinder 2, and the interval between the two can be set to 20 - 50 cm. A plurality of groups of electric heating elements, such as resistance wire heating coils, are evenly arranged along the axial direction of the inactivation cylinder 1 in the annular space. The inactivation temperature range is usually 80 - 120 °C, which is set according to the inactivation requirements of weeds carrying germs and pests.

[0038] A plurality of straight protrusions 201 extending along the axial direction of the combing cylinder 2 are evenly arranged on the inner wall of the combing cylinder 2. Bearing seats 202 are arranged at both ends of the combing cylinder 2. The bearing seats 202 can be set as high-temperature resistant sealed bearings, which not only ensure the free rotation of the combing cylinder 2 but also maintain the tightness of the annular space. A first driving mechanism 203 for driving its rotation is arranged in the middle of the combing cylinder 2. The first driving mechanism 203 includes a gear ring 203a fixedly sleeved on the combing cylinder 2, a gear 203b meshing with the gear ring 203a, and a first driving part 203c for driving the gear 203b to rotate. The first driving part 203c is fixed on the top of the inactivation cylinder 1, and the first driving part 203c can be set as a motor. During use, the first driving mechanism 203 drives the gear 203b to rotate, the gear 203b drives the gear ring 203a to rotate, and the gear ring 203a drives the combing cylinder 2 to rotate. The rotation speed is flexibly adjustable, generally maintained at 5 - 15 revolutions per minute, so as to adapt to various weed working conditions.

[0039] The straight protrusion 201 can be made of a slightly hard rubber material, with a height of 3-8 cm and a width of 2-5 cm. The cooperation between the straight protrusion 201 and the combing cylinder 2 forms a combing structure. When weeds enter the combing cylinder 2 from the feeding port, as the combing cylinder 2 rotates, the straight protrusion 201 continuously contacts the weeds like the teeth of a comb. Since the straight protrusion 201 plays a role in blocking and pushing the weeds, when the weeds roll and move in the combing cylinder 2, the long stalk parts are more likely to be "combed" and are gradually arranged along the rotation direction of the combing cylinder 2, initially achieving the effect of making the orientation of the weeds tend to be consistent. During this process, the heating system of the inactivation cylinder 1 is started synchronously to perform high-temperature inactivation treatment on the weeds, killing the germs, pests and seeds carried by the weeds, avoiding secondary spread, and minimizing the risk of biological pollution to the greatest extent.

[0040] As Figure 3 shown, the biosafety pretreatment unit further includes a pushing component 3 for pushing the combed weeds in the combing cylinder 2 into the sorting unit. The pushing component 3 includes a pushing plate 301 and a second driving member 302 for driving the pushing plate 301 to move. The second driving member 302 can be set as an electric push rod, and the second driving member 302 is fixed on the inactivation cylinder 1 through a bracket. The combed weeds are quickly pushed into the inner bottom surface of the conveyor belt 504 by the second driving member 302.

[0041] As Figures 5 - 7 shown, the annular conveying component 5 includes a frame body 501 and four roller supports 502 arranged in a matrix and rotatably provided in the frame body 501. A third driving member 503 for driving is provided on the side of one of the roller supports 502. The third driving member 503 can be set as a motor. A conveyor belt 504 is covered on the four roller supports 502, and a plurality of air holes are evenly distributed on the conveyor belt 504 in a dot matrix. The adsorption component 9 includes an adsorption cylinder body 901 fixed on the outer surface of the conveyor belt 504. A plurality of adsorption holes are provided on the adsorption cylinder body 901. One end of the adsorption cylinder body 901 is provided with a solenoid valve 903, and a rubber abutting block 904 is provided at the end of the solenoid valve 903. A metal sheet 902 is provided at the other end of the adsorption cylinder body 901. An annular metal plate 505 is provided on the inner side of one end plate of the frame body 501 and is matched with the metal sheet 902. Annular air grooves 506 and an air outlet pipe 507 are respectively provided on both sides of the other end plate of the frame body 501. The air outlet pipe 507 is externally connected to a vacuum adsorption device, such as a vacuum pump. The rubber abutting block 904 abuts against the annular air groove 506. Among them, elastic members for abutting are provided at both the metal sheet 902 and the rubber abutting block 904. The metal sheet 902 abuts against the annular metal plate 505 through the elastic member, and the cooperation between the metal sheet 902 and the annular metal plate 505 is used to connect the circuit of the solenoid valve 903. The rubber abutting block 904 abuts against the annular air groove 506 through the elastic member.

[0042] When identifying and classifying, the same type of weeds laid flat on the annular conveying component 5 are identified by the identification component 7, and the control component controls the adsorption component 9 at the corresponding position to work, that is, the solenoid valve 903 is opened, and the same type of weeds at the corresponding position are adsorbed by the suction of the adsorption cylinder 901. Then, the annular conveying component 5 is started, and the adsorbed weeds are rotated above the linear conveying component 6 and released through the annular conveying component 5, and the weeds fall onto the linear conveying component 6 and are conveyed to the resource conversion unit; and so on, different types of weeds are identified and classified one by one.

[0043] Embodiment 2

[0044] On the basis of Embodiment 1, in order to improve the accuracy of identification and obtain clear and accurate weed images, as Figure 5 , Figure 8 shown, a second driving mechanism 8 for driving it to reciprocate and lay flat the weeds is provided on the side of the annular conveying component 5. The second driving mechanism 8 includes a disc 802 and a fourth driving member 801 for driving the disc 802 to rotate. The fourth driving member 801 can be set as a motor. A connecting rod 803 is hinged at the edge of the disc 802, and the other end of the connecting rod 803 is hinged to the end of the frame body 501. In use, the fourth driving member 801 drives the disc 802 to rotate, and the disc 802 drives the frame body 501 to reciprocate in the classification box body 4 through the connecting rod 803, so as to lay flat the weeds on the conveyor belt 504. By continuously laying flat the weeds, the identification component 7 can take pictures of the weeds from different angles, obtain the comprehensive morphological information of the weeds, and improve the accuracy of the identification component 7.

[0045] Furthermore, dust suction components for removing impurities in the weeds are integrated on both end plates of the classification box body 4. The dust suction components include a plurality of air suction branch pipes 401 distributed at equal intervals and an air suction main pipe 402 communicated with the air suction branch pipes 401. A plurality of dust suction holes are provided on the air suction branch pipes 401. Through the adsorption of the dust suction holes, fine impurities in the weeds, such as dust and fine sand and gravel, can be effectively removed during the reciprocating movement and paving of the weeds. The purified weeds are more conducive to subsequent resource utilization such as fermentation and composting, and improve the product quality.

[0046] Embodiment 3

[0047] The present invention also provides a method for identifying, classifying and resourcefully treating urban harmful weeds, including the following steps:

[0048] S1. First, inactivate the weeds through the biosafety pretreatment unit to eliminate harmful substances and comb the weeds for subsequent processing by the classification unit. Specifically: Place the harmful weeds into the combing cylinder 2 through the end feed inlet, control the rotation of the combing cylinder 2 to make the orientation of the weeds consistent. During this process, perform high-temperature inactivation treatment on the weeds through the inactivation cylinder 1. Then, use the pusher assembly 3 to quickly push the combed weeds onto the inner bottom surface of the conveyor belt 504;

[0049] S2. Then, identify and classify different types of weeds through the classification unit. Specifically: Level the weeds on the inner bottom surface of the conveyor belt 504 through the reciprocating annular conveying assembly 5. Identify the weeds one by one through the identification assembly 7. Then, adsorb the weeds of the same type through the adsorption assembly 9 at the corresponding position, and the weeds at the remaining positions are in a free state. Start the conveyor belt 504, and the conveyor belt 504 drives the adsorption assembly 9 to rotate. The weeds adsorbed by the adsorption assembly 9 are transported above the linear conveying assembly 6 along with the conveyor belt 504. Then, turn off the adsorption assembly 9 to make the weeds fall, and transport them to the resource conversion unit through the linear conveying assembly 6. When the conveyor belt 504 moves, the weeds in a free state still fall onto the inner bottom surface of the conveyor belt 504 under the action of gravity. Level the weeds on the inner bottom surface of the conveyor belt 504 again through the reciprocating annular conveying assembly 5, and continue to identify the next type of weeds until all weeds are identified;

[0050] S3. Finally, convert different types of weeds into corresponding organic fertilizers through the resource conversion unit. Specifically: Crush the weeds through the mechanical crushing assembly 10. Drive the fermentation and conversion assembly 11 corresponding to this type of weeds to move to the mechanical crushing assembly 10 through the XY platform 1101 to receive the crushed material and perform fermentation treatment. According to the biological characteristics of different harmful weeds, such as nutrient components, cellulose content, lignin content, etc., adopt customized conversion methods. For example, for weeds rich in cellulose, they can be converted into organic fertilizers through fermentation, composting, etc. For weeds containing specific bioactive substances, these substances can be extracted for use in the pharmaceutical, cosmetics and other fields.

[0051] The above embodiments only represent one implementation mode of the present invention, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A system for identifying, classifying and recycling harmful weeds in cities, comprising a biosafety pretreatment unit for inactivating harmful substances in weeds and combing weeds, a classification unit for identifying and classifying different types of weeds, and a resource conversion unit for converting different types of weeds into corresponding organic fertilizers, characterized in that: The biosafety pretreatment unit comprises an inactivation cylinder (1) and a combing cylinder (2) rotatably arranged in the inactivation cylinder (1), wherein a plurality of straight protrusions (201) extending along the axial direction of the combing cylinder (2) are evenly arranged on the inner wall of the combing cylinder (2); The classification unit comprises a classification box (4), an annular conveying assembly (5) slidably arranged in the classification box (4), a linear conveying assembly (6) located in the annular conveying assembly (5), and an identification assembly (7) located at the bottom of the linear conveying assembly (6); the outer surface of the annular conveying assembly (5) is covered with a circle of adsorption assembly (9) for adsorbing identified weeds; the identified weeds are transported to the top of the linear conveying assembly (6) through the annular conveying assembly (5) and fall down, and are transported to the resource conversion unit through the linear conveying assembly (6); The resource conversion unit comprises a mechanical crushing component (10) and a plurality of fermentation conversion components (11) located below the mechanical crushing component (10), wherein the bottom of the plurality of fermentation conversion components (11) is provided with an XY platform (1101) for driving the fermentation conversion components (11) to move within a plane to receive crushed material from the mechanical crushing component (10).

2. The system for identifying, classifying and recycling urban harmful weeds according to claim 1, characterized in that: An annular space is formed between the inactivation cylinder (1) and the combing cylinder (2), and a plurality of groups of electric heating elements are arranged evenly along the axial direction of the inactivation cylinder (1) in the annular space.

3. The system for identifying, classifying and recycling urban harmful weeds according to claim 1, characterized in that: Both ends of the combing cylinder (2) are provided with bearing seats (202), and the middle part of the combing cylinder (2) is provided with a first driving mechanism (203) for driving the rotation thereof, wherein the first driving mechanism (203) comprises a gear ring (203a) fixedly mounted on the combing cylinder (2), a gear (203b) meshing with the gear ring (203a), and a first driving member (203c) for driving the gear (203b) to rotate, and the first driving member (203c) is fixed on the top of the inactivation cylinder (1).

4. The system for identifying, classifying and recycling urban harmful weeds according to claim 1, characterized in that: The biosafety pretreatment unit further comprises a pushing assembly (3) for pushing the combed weeds in the combing cylinder (2) into the classification unit, the pushing assembly (3) comprising a pushing plate (301) and a second driving member (302) for driving the pushing plate (301) to move, the second driving member (302) being fixed to the inactivation cylinder (1) via a bracket.

5. The system for identifying, classifying and recycling urban harmful weeds according to claim 1, characterized in that: The annular conveying assembly (5) comprises a frame (501) and four rollers (502) rotatably arranged in the frame (501) and distributed in a matrix shape, wherein a third driving member (503) for driving is arranged on the side of one of the rollers (502), and a conveyor belt (504) is covered on the four rollers (502), and the conveyor belt (504) is provided with a plurality of air holes evenly distributed in a dot matrix shape.

6. The system for identifying, classifying and recycling harmful weeds in cities according to claim 5, characterized in that: The adsorption component (9) comprises an adsorption column (901) fixed on the outer surface of the conveyor belt (504), the adsorption column (901) being provided with a plurality of adsorption holes, one end of the adsorption column (901) being provided with an electromagnetic valve (903), the end of the electromagnetic valve (903) being provided with a rubber stopper (904), and the other end of the adsorption column (901) being provided with a metal sheet (902).

7. The system for identifying, classifying and recycling urban harmful weeds according to claim 6, characterized in that: An annular metal plate (505) matching with the metal sheet (902) is provided on the inner side of one end plate of the frame (501), and an annular air groove (506) and an air outlet pipe (507) are provided on both sides of the other end plate of the frame (501), wherein the air outlet pipe (507) is externally connected to a vacuum adsorption device, and the rubber abutment block (904) abuts against the annular air groove (506).

8. The system for identifying, classifying and recycling harmful weeds in cities according to claim 1, characterized in that: A second driving mechanism (8) is provided on the side of the annular conveying assembly (5) for driving it to reciprocate to spread the weeds. The second driving mechanism (8) comprises a disc (802) and a fourth driving member (801) for driving the disc (802) to rotate. A connecting rod (803) is hingedly provided at the edge of the disc (802). The other end of the connecting rod (803) is hingedly connected to the end of the frame (501).

9. The system for identifying, classifying and recycling urban harmful weeds according to claim 1, characterized in that: Dust suction components for removing impurities from weeds are integrated on both end plates of the classification box (4), the dust suction components comprising a plurality of equally spaced suction branch pipes (401) and a main suction pipe (402) connected to the suction branch pipes (401), the suction branch pipes (401) being provided with a plurality of equally spaced dust suction holes.

10. A method for identifying, classifying and recycling harmful weeds in cities, using a system for identifying, classifying and recycling harmful weeds in cities as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1, firstly inactivate the weeds through the biosafety pretreatment unit to eliminate harmful substances and comb the weeds for subsequent treatment by the classification unit, specifically: put the harmful weeds into the combing cylinder (2) through the end feed port, control the combing cylinder (2) to rotate so that the weeds tend to be in the same direction, and in this process, the weeds are inactivated by the inactivation cylinder (1) at high temperature; S2. Different types of weeds are then identified and classified by the classification unit, specifically: the weeds in the reciprocating annular conveying component (5) are flattened, the weeds are identified one by one by the identification component (7), the weeds of the same type are adsorbed by the adsorption component (9), and the weeds are transported to the top of the linear conveying component (6) through the annular conveying component (5) and fall down, and then transported to the resource conversion unit through the linear conveying component (6); S3. Finally, the different types of weeds are converted into corresponding organic fertilizers through the resource conversion unit. Specifically, the weeds are crushed by the mechanical crushing component (10), and the fermentation conversion component (11) corresponding to the type of weeds is driven by the XY platform (1101) to move to the mechanical crushing component (10) to receive the crushed material and ferment it.

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