Urban greening waste biological treatment and resource utilization device and use method thereof

Abstract

The invention relates to the technical field of urban landscaping waste treatment, in particular to an urban landscaping waste biological treatment and resource utilization device and a using method thereof, and the urban landscaping waste biological treatment and resource utilization device comprises a decomposition bin, a stirring mechanism, a temperature control assembly and a discharging mechanism. The stirring mechanism changes the coverage range and angle of blades through the dynamic adjusting assembly, the temperature control assembly flexibly adjusts the temperature in the bin, and the biological treatment effect is optimized. The invention further provides a treatment method, the stirring rotating speed and the temperature control state are adjusted in stages, and efficient decomposition and resource utilization of the waste are completed. The treatment efficiency can be remarkably improved, the problems of low efficiency and insufficient pertinence in the prior art are solved, the operation convenience and stability are ensured, and the method is suitable for efficient resourceful treatment of urban landscaping waste.

Description

Technical Field

[0001] The present application relates to the technical field of urban greening waste treatment, specifically to an urban greening waste biological treatment and resource utilization device and a method for using the same. Background Art

[0002] The treatment and resource utilization of urban greening waste is becoming an increasingly pressing issue. Traditional treatment methods, which primarily rely on incineration, landfilling, or simple composting, have limitations in terms of resource recovery and environmental protection, and may also cause secondary pollution. Therefore, the development of a device and method for efficiently biologically treating and reusing urban greening waste is of great practical significance.

[0003] After searching, the patent with publication number CN115041499B discloses an environmentally friendly agricultural waste utilization and treatment device, with a publication date of December 8, 2023. This technical solution realizes the resource utilization of waste by setting up a mixing component and a heating mechanism to mix agricultural waste with animal manure and then perform molding treatment. However, this solution is mainly designed for agricultural waste and fails to fully consider the characteristics of the high content of lignocellulose in urban greening waste, which may lead to a certain impact on the treatment efficiency. In addition, its design lacks targeted biological treatment links, and there are certain limitations in achieving efficient degradation and resource conversion of urban greening waste, and its scope of application is therefore limited.

[0004] These issues demonstrate that existing waste treatment technologies still have room for improvement in terms of targeted treatment, efficient biodegradation, and resource utilization of urban greening waste. Traditional treatment methods often struggle to achieve optimal decomposition of urban greening waste with a high lignocellulose content, and lack dynamic adjustment mechanisms to adapt to the needs of different treatment stages. Summary of the Invention

[0005] To solve one of the above problems, the present invention provides a device for biological treatment and resource utilization of urban greening waste and a method for using the same, which optimizes the biological treatment process and improves resource utilization efficiency to meet the actual needs of urban greening waste treatment.

[0006] The present invention provides a device for biological treatment and resource utilization of urban greening waste, including a decomposition bin, a stirring mechanism, a temperature control component and a discharge mechanism. The top of the decomposition bin is provided with a feed port, and the bottom is provided with a discharge port; the stirring mechanism is connected to the inside of the decomposition bin, and is used to stir and disperse the waste; the temperature control component is provided on the outer wall of the decomposition bin, and is used to adjust the temperature in the decomposition bin; the discharge mechanism is connected to the bottom of the decomposition bin, and is used to discharge the treated waste. The stirring mechanism includes a first drive unit, a main shaft, a stirring blade group and a dynamic adjustment component, the first drive unit is installed on the decomposition bin, the main shaft is installed on the central axis of the decomposition bin, and the output end of the first drive unit is connected to the main shaft, the stirring blade group is spirally distributed around the main shaft, and the dynamic adjustment component is connected between the main shaft and the stirring blade group, and is used to change the expansion angle and coverage range of the stirring blade group. The discharge mechanism includes a discharge bin, a second drive unit and a spiral discharge pipe. The discharge bin is installed on the discharge port of the decomposition bin, the second drive unit is arranged on the discharge bin, the spiral discharge pipe is rotatably connected to the discharge bin, and the output end of the second drive unit is connected to the spiral discharge pipe.

[0007] In a further preferred embodiment of the present invention, the dynamic adjustment component includes a sliding ring, at least three groups of connecting rods and a hinge seat. The sliding ring is sleeved on the outer periphery of the main shaft and forms a sliding connection with the main shaft through a damping structure. One end of each group of connecting rods is movably connected to the sliding ring through the hinge seat, and the other end is respectively hinged to the root of the stirring blade group. The hinge seats are evenly distributed along the outer periphery of the sliding ring. Each hinge seat includes a limiting groove, a rotating shaft hole and a positioning block. A single connecting rod body includes a main rod section and a secondary rod section. One end of the main rod section is provided with a first rotating shaft, which is embedded in the rotating shaft hole and forms a rotating connection with the hinge seat. The positioning block is located in the limiting groove to limit the rotation range of the first rotating shaft. The other end of the main rod section is provided with a second rotating shaft, which forms a hinge connection with one end of the secondary rod section. The ends of the main rod section and the secondary rod section contact each other when they rotate relative to each other to a preset angle to limit the rotation range. The auxiliary rod section is shorter than the main rod section, and the other end of the auxiliary rod section is fixedly connected to the root of the stirring blade assembly via a pin. The hinged design between the main and auxiliary rod sections allows the stirring blade assembly to achieve different deployment states at different speeds, thereby adapting to different processing requirements.

[0008] In a further preferred embodiment of the present invention, the number of the stirring blade groups is three, and each stirring blade group is provided with dispersing teeth at the end. The dispersing teeth are arranged in a staggered manner and distributed on both sides of the stirring blade group. The tips of the dispersing teeth face the stirring direction. This design allows the waste to be more fully dispersed and mixed during the stirring process, thereby improving the decomposition efficiency.

[0009] In a further preferred embodiment of the present invention, a guide sleeve, an upper retaining ring, and a lower retaining ring are provided on the periphery of the main shaft. The surface of the guide sleeve is divided into a plurality of regions with different roughness along the axial direction, and the roughness gradually increases from top to bottom. The sliding ring is provided on the outside of the guide sleeve and is limited by the upper retaining ring and the lower retaining ring. When the rotation speed of the main shaft exceeds a preset value, the sliding ring moves downward along the guide sleeve, the radial coverage area of ​​the stirring blade group increases, and the axial height decreases. This design enables the stirring mechanism to automatically adjust the coverage range of the stirring blade group according to the change in rotation speed, thereby adapting to the processing requirements at different stages.

[0010] In a further preferred embodiment of the present invention, a clamping assembly is further included, which includes a fixing frame, a first clamping plate, a second clamping plate and an adjustment handle. The fixing frame is installed on the outer wall of the decomposition bin, and the first clamping plate and the second clamping plate are movably connected to the fixing frame through a transmission mechanism. The adjustment handle controls the opening and closing movements of the first clamping plate and the second clamping plate through a threaded structure, and is used to clamp an external container.

[0011] In a further preferred embodiment of the present invention, the inner sides of the first and second clamping plates are provided with anti-slip pads made of rubber to enhance clamping stability. This design enables the device to stably secure the external container and prevent the container from shifting due to vibration or improper operation.

[0012] In a further preferred embodiment of the present invention, the temperature control assembly includes a heating tube and a cooling tube. The heating tube is disposed on the outer wall of the decomposition chamber, and the cooling tube surrounds the bottom of the decomposition chamber. This design enables the device to flexibly adjust the temperature within the decomposition chamber according to the different requirements of the treatment stage, thereby optimizing the biological treatment effect.

[0013] The present invention also provides a method for biological treatment and resource utilization of urban greening waste, comprising the following steps: after the urban greening waste is put into the decomposition bin through the feed port, the first clamp and the second clamp are controlled by adjusting the handle to clamp the external container; the first drive unit drives the stirring blade group to descend to a preset first working position and start rotating; microbial agents and water are added to the decomposition bin, and the rotation speed of the stirring blade group is controlled to a preset first target value for preliminary mixing; after the preliminary mixing continues for a first preset time, the rotation of the stirring blade group is stopped, and lignocellulose degrading enzymes are added in batches; the rotation speed of the stirring blade group is adjusted respectively to complete the initial decomposition stage, the main decomposition stage and the fine decomposition stage, and the position and angle of the stirring blade group change in each stage; the rotation speed of the stirring blade group is maintained to a second preset value, and the discharge is completed simultaneously in the decomposition bin.

[0014] In a further preferred embodiment of the present invention, during the process of controlling the rotation speed of the stirring blade group to a preset first target value for preliminary mixing, an auxiliary agent is added at preset time intervals, and the auxiliary agent includes a nitrogen source and a phosphorus source to promote the growth and reproduction of microorganisms.

[0015] In a further preferred embodiment of the present invention, the specific steps of adjusting the rotational speed of the stirring blade group to complete the initial decomposition stage, the main decomposition stage and the fine decomposition stage respectively include: controlling the rotational speed of the stirring blade group to a preset second target value and continuing for a second preset time, the radial coverage area of ​​the stirring blade group is increased, and the axial height is reduced to a preset second working position to complete the initial decomposition; controlling the rotational speed of the stirring blade group to gradually increase from the second target value to the third target value and continue for the second preset time to complete the main decomposition; controlling the rotational speed of the stirring blade group to gradually increase from the third target value to the fourth target value and continue for the third preset time to complete the fine decomposition.

[0016] In a further preferred embodiment of the present invention, in the initial decomposition stage, the main decomposition stage and the fine decomposition stage, the temperature control component is started to adjust the temperature in the decomposition bin. The temperature control component includes a heating tube and a cooling tube. The heating tube is arranged on the outer wall of the decomposition bin, and the cooling tube surrounds the bottom of the decomposition bin. The temperature change in the decomposition bin is controlled by switching the working states of the heating tube and the cooling tube.

[0017] The above technical solution achieves efficient biological treatment and resource utilization of urban greening waste by optimizing the design of the stirring mechanism, dynamically adjusting the coverage of the stirring blade group, and combining the adjustment function of the temperature control component. It solves the problem of low efficiency in the treatment of waste with a high lignocellulose content in the existing technology, and at the same time improves the efficiency and quality of resource conversion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. The illustrative embodiments of this application and their description are used to explain this application and do not constitute an improper limitation of this application.

[0019] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the present invention;

[0022] Figure 4 It is a schematic diagram of a partial three-dimensional structure of the stirring mechanism of the present invention;

[0023] Figure 5 Schematic diagram of the three-dimensional structure of the dynamic adjustment component in the present invention;

[0024] Figure 6 Schematic diagram of the three-dimensional structure of the stirring blade group and the dispersing teeth in the present invention;

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the clamping assembly in the present invention.

[0026] Icons: 1. Decomposition chamber; 2. Stirring mechanism; 21. First drive unit; 22. Main shaft; 23. Stirring blade group; 231. Dispersion teeth; 24. Dynamic adjustment component; 241. Sliding ring; 242. Connecting rod body; 243. Articulated seat; 3. Temperature control component; 31. Heating tube; 32. Cooling tube; 4. Discharge mechanism; 41. Discharge chamber; 42. Second drive unit; 43. Spiral discharge tube; 5. Clamping component; 51. Fixed frame; 52. First splint; 53. Second splint; 54. Adjustment handle. DETAILED DESCRIPTION

[0027] The present invention provides a device for biological treatment and resource utilization of urban greening waste, the structure of which is as follows: Figure 1 and Figure 2As shown, it includes a decomposition bin 1, a stirring mechanism 2, a temperature control component 3 and a discharge mechanism 4. The decomposition bin 1 is a cylindrical structure with a feed port at the top and a discharge port at the bottom, which is used to accommodate and process urban greening waste. The stirring mechanism 2 is installed inside the decomposition bin 1 to stir and disperse the waste. The temperature control component 3 is set on the outer wall of the decomposition bin 1 to adjust the temperature inside the decomposition bin 1. The discharge mechanism 4 is connected to the bottom of the decomposition bin 1 to discharge the treated waste.

[0028] The specific structure of the stirring mechanism 2 is as follows: Figure 3 and Figure 4 As shown, it includes a first drive unit 21, a main shaft 22, a stirring blade group 23 and a dynamic adjustment component 24. The first drive unit 21 is installed on the top of the decomposition bin 1, and its output end is connected to the main shaft 22, and the main shaft 22 is arranged along the central axis of the decomposition bin 1. The stirring blade group 23 is distributed in a spiral shape around the main shaft 22 and is used to stir and disperse the waste. The dynamic adjustment component 24 is connected between the main shaft 22 and the stirring blade group 23 and is used to change the expansion angle and coverage range of the stirring blade group 23. The specific structure of the dynamic adjustment component 24 is shown in FIG. Figure 5 As shown, the connecting rod 242 includes a sliding ring 241, at least three groups of connecting rods 242, and a hinge seat 243. The sliding ring 241 is sleeved around the outer periphery of the main shaft 22 and forms a sliding connection with the main shaft 22 via a damping structure. One end of each group of connecting rods 242 is movably connected to the sliding ring 241 via a hinge seat 243, and the other end is hinged to the base of each stirring blade group 23. The hinge seats 243 are evenly distributed along the outer periphery of the sliding ring 241, and each hinge seat 243 includes a limiting groove, a rotating shaft hole, and a positioning block. A single connecting rod 242 includes a main rod section and a secondary rod section. One end of the main rod section is provided with a first rotating shaft, which is embedded in the rotating shaft hole and forms a rotational connection with the hinge seat 243. The positioning block is located in the limiting groove to limit the rotation range of the first rotating shaft. The other end of the main rod section is provided with a second rotating shaft, which forms a hinged connection with one end of the secondary rod section. When the ends of the main rod section and the secondary rod section rotate relative to each other to a predetermined angle, they contact each other to limit the rotation range. The length of the auxiliary rod section is smaller than that of the main rod section, and the other end of the auxiliary rod section is fixedly connected to the root of the stirring blade assembly 23 through a pin shaft.

[0029] There are three stirring blade groups 23. The end of each stirring blade group 23 is provided with a dispersion tooth 231. The distribution of the dispersion tooth 231 is as follows: Figure 6As shown, they are staggered and distributed on both sides of the stirring blade group 23, with the tips of the dispersing teeth 231 facing the stirring direction. This design enables the waste to be more fully dispersed and mixed during the stirring process. A guide sleeve, an upper retaining ring and a lower retaining ring are provided on the periphery of the main shaft 22. The surface of the guide sleeve is divided into a plurality of areas with different roughness along the axial direction, and the roughness gradually increases from top to bottom. The sliding ring 241 is sleeved on the outside of the guide sleeve and is limited by the upper retaining ring and the lower retaining ring. When the rotation speed of the main shaft 22 exceeds the preset value, the sliding ring 241 moves downward along the guide sleeve, the radial coverage area of ​​the stirring blade group 23 increases, and the axial height decreases. The specific structure of the guide sleeve is shown in FIG. Figure 5 As shown, the surface roughness zoning design and the limiting position of the sliding ring 241 are clearly visible.

[0030] The specific arrangement of the temperature control component 3 is as follows Figure 3 As shown, it includes a heating pipe 31 and a cooling pipe 32. The heating pipe 31 is arranged on the outer wall of the decomposition chamber 1, and the cooling pipe 32 surrounds the bottom of the decomposition chamber 1. This design enables the device to flexibly adjust the temperature in the decomposition chamber 1 according to the different requirements of the processing stage.

[0031] The specific structure of the discharge mechanism 4 is as follows: Figure 3 As shown, it includes a discharge bin 41, a second drive unit 42 and a spiral discharge pipe 43. The discharge bin 41 is installed on the discharge port of the decomposition bin 1, the second drive unit 42 is provided on the discharge bin 41, the spiral discharge pipe 43 is rotatably connected to the discharge bin, and the output end of the second drive unit 42 is connected to the spiral discharge pipe 43.

[0032] The specific structure of the clamping assembly 5 is as follows Figure 7 As shown, the device comprises a fixing frame 51, a first clamping plate 52, a second clamping plate 53, and an adjustment handle 54. The fixing frame 51 is mounted on the outer wall of the decomposition chamber 1. The first and second clamping plates 52, 53 are movably connected to the fixing frame 51 via a transmission mechanism. The adjustment handle 54, using a threaded structure, controls the opening and closing of the first and second clamping plates 52, 53, thereby clamping the external container. Rubber anti-slip pads are placed on the inner sides of the first and second clamping plates 52, 53. This design ensures that the device can stably secure the external container and prevent displacement due to vibration or improper operation.

[0033] The present invention also provides a method for biological treatment and resource utilization of urban greening waste, which is applied to the above-mentioned device and includes the following steps: First, after the urban greening waste is put into the decomposition bin 1 through the feed port, the adjustment handle 54 controls the first clamping plate 52 and the second clamping plate 53 to clamp the external container. Then, the first drive unit 21 drives the stirring blade group 23 to descend to a preset first working position and start rotating. After adding microbial inoculants and water into the decomposition bin 1, the rotation speed of the stirring blade group 23 is controlled to a preset first target value for preliminary mixing. After the preliminary mixing continues for the first preset time, the rotation of the stirring blade group 23 is stopped, and lignocellulose degrading enzymes are added in batches. Then, the rotation speed of the stirring blade group 23 is adjusted respectively to complete the initial decomposition stage, the main decomposition stage, and the fine decomposition stage, and the position and angle of the stirring blade group 23 are changed in each stage. Finally, the rotation speed of the stirring blade group 23 is maintained at a second preset value, and the material is discharged simultaneously in the decomposition bin 1.

[0034] The specific steps for adjusting the rotational speed of the stirring blade assembly 23 during the initial decomposition stage, the main decomposition stage, and the fine decomposition stage are as follows: First, the rotational speed of the stirring blade assembly 23 is controlled to a preset second target value and maintained for a second preset time. The radial coverage area of ​​the stirring blade assembly 23 is increased, and the axial height is reduced to a preset second working position to complete the initial decomposition. Next, the rotational speed of the stirring blade assembly 23 is controlled to gradually increase from the second target value to a third target value and maintained for a second preset time to complete the main decomposition. Finally, the rotational speed of the stirring blade assembly 23 is controlled to gradually increase from the third target value to a fourth target value and maintained for a third preset time to complete the fine decomposition.

[0035] During the initial, main, and fine decomposition stages, the temperature control assembly 3 is activated to regulate the temperature within the decomposition chamber 1. This assembly includes a heating tube 31 and a cooling tube 32. The heating tube 31 is located on the outer wall of the decomposition chamber 1, while the cooling tube 32 surrounds the bottom of the chamber. The temperature within the decomposition chamber 1 is controlled by switching the operating states of the heating tube 31 and the cooling tube 32. This design enables the device to provide appropriate temperature conditions at different stages, thereby optimizing the biological treatment effect and improving resource recovery efficiency.

[0036] The present invention addresses the existing issues of low urban landscaping waste treatment efficiency and lack of targeted biological treatment by dynamically adjusting the coverage and angle of the stirring blade assembly 23, combined with the flexible adjustment function of the temperature control assembly 3. Furthermore, the device's design prioritizes operational convenience and stability, ensuring efficient and reliable resource utilization.

[0037] In order to better enable relevant personnel in this technical field to fully understand and implement the present invention, the specific implementation principle of the present invention is further supplemented below in combination with a specific application scenario.

[0038] In a practical scenario of urban greening waste processing, collected urban greening waste is first fed into the decomposition chamber 1 through the feed port. The adjustment handle 54 controls the first and second clamping plates 52, 53 of the clamping assembly 5 to clamp the external container, ensuring its stability during operation. Subsequently, the first drive unit 21 is activated, and the main shaft 22 drives the stirring blade assembly 23 down to the preset first operating position and begins to rotate. At this point, the dispersing teeth 231, as the stirring blade assembly 23 rotates, initially disperse and mix the waste.

[0039] After the microbial inoculant and water are added to the decomposition chamber 1, the speed of the stirring blade assembly 23 is controlled to a first target value to achieve initial mixing. During this process, the sliding ring 241 moves along the surface of the guide sleeve. Due to the roughness zoning design of the guide sleeve, the movement of the sliding ring 241 is restricted by the damping structure, thereby dynamically adjusting the radial coverage area and axial height of the stirring blade assembly 23 according to the speed of the main shaft 22. This design enables the stirring mechanism to optimize the stirring effect according to the characteristics of the material at different stages, avoiding uneven stirring caused by high cellulose content.

[0040] After the initial mixing is completed, the rotation of the stirring blade group 23 is stopped, and the lignocellulose degrading enzyme is added in batches. Then the initial decomposition stage is entered, the rotation speed of the stirring blade group 23 is controlled to the second target value, the sliding ring 241 moves downward along the guide sleeve, the radial coverage area of ​​the stirring blade group 23 increases, and the axial height is reduced to the second working position. This change is achieved through the hinged structure of the connecting rod body 242: the movement of the sliding ring 241 drives the main rod section and the auxiliary rod section of the connecting rod body 242 to rotate relative to each other, thereby changing the angle and coverage range of the stirring blade group 23. At the same time, the heating tube 31 in the temperature control component 3 is started to raise the temperature in the decomposition chamber 1 to a range suitable for initial decomposition, thereby promoting the initial reaction of the enzyme with the waste.

[0041] After entering the main decomposition stage, the rotation speed of the stirring blade group 23 is controlled to gradually increase from the second target value to the third target value. As the rotation speed increases, the sliding ring 241 continues to move downward along the guide sleeve, the radial coverage area of ​​the stirring blade group 23 is further increased, and the axial height is further reduced. This process is achieved through the design of the limiting groove and positioning block of the connecting rod body 242 to ensure that the angle change of the stirring blade group 23 is always within the preset range. At the same time, the cooling pipe 32 in the temperature control component 3 starts to work, adjusting the temperature in the decomposition chamber 1 to a condition suitable for the main decomposition, so as to maintain the activity of microorganisms and accelerate the decomposition process.

[0042] During the fine decomposition stage, the rotation speed of the stirring blade group 23 gradually increases from the third target value to the fourth target value, the sliding ring 241 reaches the lowest limit position of the guide sleeve, the radial coverage area of ​​the stirring blade group 23 reaches the maximum, and the axial height is reduced to the minimum. At this time, the role of the dispersion teeth 231 is more significant, and the staggered arrangement design allows the waste to be further refined and mixed, thereby improving the decomposition efficiency. The temperature control component 3 flexibly switches the working state of the heating tube 31 and the cooling tube 32 according to the needs of fine decomposition, ensuring that the temperature in the decomposition chamber 1 is always maintained within an appropriate range.

[0043] Finally, the rotation speed of the stirring blade assembly 23 is maintained at a second preset value, and the discharge mechanism 4 is activated to complete the discharge. Driven by the second drive unit 42, the spiral discharge pipe 43 in the discharge bin 41 rotates, discharging the processed waste from the discharge port of the decomposition bin 1. Throughout this process, the anti-slip pads of the clamping assembly 5 effectively prevent the external container from shifting due to vibration or improper operation, ensuring the stability of the device's operation.

[0044] Through the above steps, the design of dynamic adjustment component 24 enables automatic adjustment of the angle and coverage of stirring blade assembly 23, solving the problem that traditional devices are difficult to adapt to the needs of different decomposition stages. The flexible adjustment function of temperature control component 3 provides the appropriate temperature conditions for biological treatment, thereby optimizing the decomposition effect and improving resource recovery efficiency.

[0045] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this disclosure and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of this disclosure, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on the specific circumstances.

[0047] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0048] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A device for biological treatment and resource utilization of urban greening waste, comprising a decomposition chamber (1), a stirring mechanism (2), a temperature control component (3) and a discharge mechanism (4), characterized in that: The decomposition bin (1) is provided with a feed port at the top and a discharge port at the bottom; The stirring mechanism (2) is connected to the interior of the decomposition bin (1) and is used to stir and disperse the waste; The temperature control component (3) is arranged on the outer wall of the decomposition chamber (1) and is used to adjust the temperature inside the decomposition chamber (1); The discharge mechanism (4) is connected to the bottom of the decomposition bin (1) and is used to discharge the processed waste; The stirring mechanism (2) comprises a first driving unit (21), a main shaft (22), a stirring blade group (23) and a dynamic adjustment component (24); the first driving unit (21) is mounted on the decomposition chamber (1); the main shaft (22) is mounted on the central axis of the decomposition chamber (1); the output end of the first driving unit (21) is connected to the main shaft (22); the stirring blade group (23) is distributed in a spiral shape around the main shaft (22); the dynamic adjustment component (24) is connected between the main shaft (22) and the stirring blade group (23) and is used to change the deployment angle and coverage range of the stirring blade group (23); The discharge mechanism (4) comprises a discharge bin (41), a second drive unit (42) and a spiral discharge pipe (43); the discharge bin (41) is mounted on the discharge port of the decomposition bin (1); the second drive unit (42) is arranged on the discharge bin (41); the spiral discharge pipe (43) is rotatably connected to the discharge bin (41); and the output end of the second drive unit (42) is connected to the spiral discharge pipe (43).

2. The device for biological treatment and resource utilization of urban greening waste according to claim 1, characterized in that: The dynamic adjustment component (24) comprises a sliding ring (241), a connecting rod body (242) and a hinge seat (243); the sliding ring (241) is sleeved on the outer periphery of the main shaft (22) and is slidably connected to the main shaft (22) through a damping structure; one end of at least three groups of the connecting rod bodies (242) is movably connected to the sliding ring (241) through the hinge seat (243), and the other end is respectively hinged to the root of the stirring blade group (23); The hinge seats (243) are evenly distributed along the outer circumference of the sliding ring (241), and each hinge seat (243) includes a limiting groove, a rotating shaft hole, and a positioning block. A single connecting rod body (242) includes a main rod section and a secondary rod section. A first rotating shaft is provided at one end of the main rod section. The first rotating shaft is embedded in the rotating shaft hole and forms a rotational connection with the hinge seat (243). The positioning block is located in the limiting groove to limit the rotation range of the first rotating shaft. The other end of the main rod segment is provided with a second rotating shaft, and the second rotating shaft is hingedly connected to one end of the auxiliary rod segment. When the ends of the main rod segment and the auxiliary rod segment rotate relative to each other to a preset angle, they contact each other to limit the rotation range; The length of the auxiliary rod section is smaller than that of the main rod section, and the other end of the auxiliary rod section is fixedly connected to the root of the stirring blade group (23) via a pin shaft.

3. The device for biological treatment and resource utilization of urban greening waste according to claim 1, characterized in that: The number of the stirring blade groups (23) is three, and a dispersing tooth (231) is provided at the end of each stirring blade group (23). The dispersing teeth (231) are arranged in a staggered manner and distributed on both sides of the stirring blade group (23), and the tip of the dispersing tooth (231) faces the stirring direction.

4. The device for biological treatment and resource utilization of urban greening waste according to claim 2, characterized in that: The outer periphery of the main shaft (22) is provided with a guide sleeve, an upper retaining ring and a lower retaining ring, and the surface of the guide sleeve is divided into a plurality of regions with different roughness along the axial direction, and the roughness gradually increases from top to bottom; The sliding ring (241) is sleeved on the outside of the guide sleeve and is limited by an upper retaining ring and a lower retaining ring. When the rotation speed of the main shaft (22) exceeds a preset value, the sliding ring (241) moves downward along the guide sleeve, the radial coverage area of ​​the stirring blade group (23) increases, and the axial height decreases.

5. The device for biological treatment and resource utilization of urban greening waste according to claim 1 is characterized in that: The invention also includes a clamping assembly (5), wherein the clamping assembly (5) includes a fixing frame (51), a first clamping plate (52), a second clamping plate (53) and an adjusting handle (54), wherein the fixing frame (51) is mounted on the outer wall of the decomposition bin (1), the first clamping plate (52) and the second clamping plate (53) are movably connected to the fixing frame (51) through a transmission mechanism, and the adjusting handle (54) controls the opening and closing of the first clamping plate (52) and the second clamping plate (53) through a threaded structure, so as to clamp an external container.

6. The device for biological treatment and resource utilization of urban greening waste according to claim 5, characterized in that: Anti-slip pads are provided on the inner sides of the first clamping plate (52) and the second clamping plate (53), and the material of the anti-slip pads is rubber.

7. The device for biological treatment and resource utilization of urban greening waste according to claim 1 is characterized in that: The temperature control component (3) comprises a heating tube (31) and a cooling tube (32); the heating tube (31) is arranged on the outer wall of the decomposition chamber (1); and the cooling tube (32) surrounds the bottom of the decomposition chamber (1).

8. A method for biological treatment and resource utilization of urban greening waste, applied to the device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. After urban greening waste is fed into the decomposition bin through the feed port, the handle is adjusted to control the first and second clamping plates to clamp the outer container; S2. The first driving unit drives the stirring blade assembly to descend to a preset first working position and start rotating; S3. After adding the microbial agent and water into the decomposition chamber, controlling the rotation speed of the stirring blade group to a preset first target value for preliminary mixing; S4, after the initial mixing continues for a first preset time, the rotation of the stirring blade assembly is stopped, and the lignocellulose degrading enzyme is added in batches; S5. Adjusting the rotation speed of the stirring blade group respectively to complete the initial decomposition stage, the main decomposition stage, and the fine decomposition stage. The position and angle of the stirring blade group change in each stage. S6. Maintain the rotation speed of the stirring blade group to a second preset value, and simultaneously complete the discharge in the decomposition bin.

9. The method for biological treatment and resource utilization of urban greening waste according to claim 8, characterized in that: The specific steps of adjusting the rotation speed of the stirring blade group to complete the initial decomposition stage, the main decomposition stage and the fine decomposition stage include: S1, controlling the rotation speed of the stirring blade assembly to a preset second target value and maintaining it for a second preset time, increasing the radial coverage area of ​​the stirring blade assembly and reducing the axial height to a preset second working position to complete initial decomposition; S2, controlling the rotation speed of the stirring blade group to gradually increase from the second target value to the third target value and continue for a second preset time to complete the main decomposition; S3, controlling the rotation speed of the stirring blade group to gradually increase from the third target value to the fourth target value and continue for a third preset time to complete fine decomposition.

10. The method for biological treatment and resource utilization of urban greening waste according to claim 9, characterized in that: In the initial decomposition stage, the main decomposition stage and the fine decomposition stage, the temperature control component is started to adjust the temperature in the decomposition chamber. The temperature control component includes a heating tube and a cooling tube. The heating tube is arranged on the outer wall of the decomposition chamber, and the cooling tube surrounds the bottom of the decomposition chamber. The temperature change in the decomposition chamber is controlled by switching the working states of the heating tube and the cooling tube.

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