Biological drying bin with auxiliary heating device and control method of biological drying bin

Abstract

The invention provides a biological drying bin with an auxiliary heating device and a control method thereof.The biological drying bin comprises a box body and a cover body arranged at the top of the box body, a driving motor is fixed to one side of the box body, an output shaft of the driving motor is in transmission connection with a stirring shaft penetrating through the box body, and the stirring shaft is rotatably arranged in the box body in a penetrating mode; a feed port is formed in the side, away from the driving motor, of the box body, and a discharge port is formed in the side, close to the driving motor, of the box body; the aeration assembly and the air exhaust assembly are arranged, the water content of materials in the box body is effectively reduced through the air exhaust assembly, meanwhile, oxygen brought into the box body through the aeration assembly helps to increase the amount of microorganisms in the materials, and meanwhile, the auxiliary heating device is arranged, so that the interior of the drying bin can be kept within the temperature range suitable for drying the materials; and the temperature of the auxiliary heating device can be correspondingly controlled and adjusted according to the real-time detection result of the temperature sensor, so that the drying application range is further widened, and the drying effect and the drying efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of organic solid waste treatment, and in particular to a biological drying bin with an auxiliary heating device and a control method thereof. Background Art

[0002] As the amount of food waste increases, whether it can be properly disposed of is directly related to food hygiene and safety and the health of the people; at the same time, with the rapid development of urban sewage treatment in my country, the amount of sludge generated is increasing. At present, the industry often adopts the method of co-treatment of food waste and sewage treatment plant sludge. This method can not only stably treat food waste and domestic sludge, making them harmless and lightweight, but also produce usable biogas and garden biocarbon soil, turning waste into treasure.

[0003] Kitchen waste refers to a type of organic waste generated during the daily food processing and consumption process, mainly including vegetable and fruit residues, leftovers, fruit shells, egg shells, spoiled food, etc. Since it contains a large amount of water and rich organic matter, if kitchen waste is stored naturally, it is easy to rot, deteriorate, emit a foul odor, breed bacteria, mosquitoes and flies, and then pollute the environment. However, through resource utilization, waste can be turned into treasure, and organic fertilizers, feed, fuel, etc. can be produced from kitchen waste, which is of great significance to environmental protection and sustainable economic development. Therefore, how to deal with kitchen waste conveniently and efficiently has always been a common concern of the government and all sectors of society.

[0004] When studying the decentralized integrated kitchen waste treatment equipment and technology, how to quickly dehydrate and dry kitchen waste and other materials to the moisture content required for back-end composting is the core technology of kitchen waste integrated treatment technology. This technology limits the size of the equipment, product energy consumption and whether the back-end can successfully compost.

[0005] Therefore, there is an urgent need to provide a biological drying bin with an auxiliary heating device and a control method thereof to solve the defects and shortcomings in the above-mentioned prior art. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a biological drying bin with an auxiliary heating device and a control method thereof.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A biological drying bin with an auxiliary heating device comprises a box body and a cover body arranged on the top of the box body, a driving motor is fixed to one side of the box body, an output shaft of the driving motor is drivingly connected to a stirring shaft penetrating the box body, the stirring shaft is rotatably penetrating the inside of the box body, a feeding port is provided on a side of the box body away from the driving motor, and a discharging port is provided on a side of the box body close to the driving motor; Features: An aeration component is also arranged inside the box, and a suction port connected to the suction component is opened on the top of the cover. The controller is respectively connected to the aeration component and the suction component by signal to correspondingly control and adjust the opening and closing of the aeration component and the suction component and their working parameters; An auxiliary heating device is also arranged on the outside of the box body, and the controller is connected with the auxiliary heating device by signal so as to correspondingly control and adjust the opening and closing of the auxiliary heating device and its working parameters.

[0008] As a further preferred embodiment of the present invention, the drive motor is a bidirectional drive motor.

[0009] As a further preferred embodiment of the present invention, both ends of the stirring shaft extend outward from the casing and are supported outside the casing by bearings. Blades are provided on the periphery of the stirring shaft, and the blades are located on opposite sides of the two ends of the stirring shaft.

[0010] As a further preferred embodiment of the present invention, the aeration assembly includes an aeration main pipe, one end of which is connected to the interior of the stirring shaft outside the box, the stirring shaft is configured as a hollow shaft, and a plurality of aeration holes connected to the interior of the stirring shaft are evenly opened on the outer wall of the stirring shaft; the other end of the aeration main pipe is connected to an aeration branch pipe inside the box, the aeration branch pipes are located on both sides of the stirring shaft and are evenly arranged along the inner wall of the box.

[0011] As a further preferred embodiment of the present invention, a plurality of humidity sensors are arranged on the top of the box body, and the temperature sensors are arranged at least at the inlet position, the outlet position and the inner side of the middle part of the box body; the adjustable working parameters of the aeration component include at least aeration flow, aeration pressure, aeration time, aeration angle and aeration sequence; the adjustable working parameters of the exhaust component include at least exhaust flow, exhaust pressure, and exhaust time.

[0012] As a further preferred embodiment of the present invention, the controller controls the auxiliary heating component as follows according to the real-time detection result of the humidity sensor: When the real-time detection result of the humidity sensor at the discharge port exceeds the preset humidity range, the controller has a higher priority in regulating the exhaust component than the aeration component; and in the process of regulating the exhaust component, the controller has a higher priority in regulating the exhaust pressure and exhaust flow than the exhaust time; When the real-time detection results of the humidity sensors at the feed port position and the inner middle part of the box body exceed the preset humidity range, the controller's adjustment priority for the aeration component is higher than the adjustment priority for the exhaust component; and in the process of the controller adjusting the aeration component, the controller's adjustment priority for the aeration flow and aeration pressure is higher than the adjustment priority for the aeration time, and the adjustment priority for the aeration time is higher than the adjustment priority for the aeration angle and aeration sequence.

[0013] As a further preferred embodiment of the present invention, the auxiliary heating device includes an auxiliary belt wrapped around the outer wall and bottom of the box body and a heating wire arranged inside the auxiliary belt, the heating wire is connected to an external power source, and the controller is connected to the external power source signal to control the opening and closing of the power source and its working parameters.

[0014] As a further preferred embodiment of the present invention, a plurality of temperature sensors are arranged inside the box, and the temperature sensors are arranged at least at the inlet position, the outlet position and the inner side of the middle part of the box; the adjustable parameters of the auxiliary heating device include at least heating time, heating speed, heating power and heating area.

[0015] As a further preferred embodiment of the present invention, the controller controls the auxiliary heating component as follows according to the real-time detection result of the temperature sensor: When the real-time detection result of the temperature sensor at the inlet position exceeds the preset temperature range, the controller has a higher priority in regulating the heating power and heating area than in regulating the heating time and heating speed; When the real-time detection result of the temperature sensor on the inner side of the middle of the box body exceeds the preset temperature range, the controller has a higher priority in adjusting the heating time and heating speed than the heating power and heating area.

[0016] Furthermore, the present invention also provides a control method for a biological drying bin with an auxiliary heating device, characterized in that it comprises the following steps: S1: The controller controls the auxiliary heating device to start preheating the internal environment of the box and keeps the auxiliary heating device turned on in subsequent steps; S2: Feed the material to be dried into the box through the feed inlet; S3: The controller starts the aeration component to aerate the inside of the box, and in this process starts the drive motor to drive the stirring shaft to rotate and stir the material; S4: The controller controls the aeration assembly to be turned off, and at the same time turns off the drive motor to stop the stirring shaft from rotating and stirring the material; S5: The controller starts the vacuum component to vacuum the inside of the box, and in the process starts the drive motor to drive the stirring shaft to rotate and stir the material; S6: After the discharge sampling test of the discharge port is qualified, the discharge port is opened, and the dried material is taken out from the discharge port and sent to the subsequent composting location.

[0017] Compared with the prior art, the advantages and positive effects achieved by the present invention are: 1) The present invention provides a biological drying bin with an auxiliary heating device and a control method thereof. The aeration component and the exhaust component are provided. The exhaust component effectively reduces the moisture content of the material (kitchen waste, etc., the same below) inside the bin, and at the same time, the aeration component brings oxygen into the bin to help increase the amount of microorganisms in the material, so that the amount of microorganisms in the material can be met by subsequent aerobic composting. At the same time, the auxiliary heating device is provided, so that the temperature inside the drying bin can be maintained in a temperature range suitable for material drying, and the temperature of the auxiliary heating device can be correspondingly controlled and adjusted according to the real-time detection result of the temperature sensor, thereby further improving the drying application range, and improving the drying effect and drying efficiency.

[0018] 2) The present invention provides a biological drying bin with an auxiliary heating device and a control method thereof, wherein an aeration component is configured to include an aeration main pipe, and one end of the aeration main pipe is connected to the hollow structure inside the stirring shaft, and the interior of the bin is aerated through the aeration holes on the outer wall of the stirring shaft during stirring, and the other end of the aeration main pipe is connected to the aeration branch pipe on the inner wall of the bin to achieve aeration, thereby achieving static aeration through the aeration branch pipe and dynamic aeration through the stirring shaft during the drying process, so that the material inside the bin is in a coordinated aeration environment between the two, thereby promoting more uniform and sufficient aeration of the material, and further improving the aeration effect and aeration efficiency.

[0019] 3) The present invention provides a biological drying bin with an auxiliary heating device and a control method thereof. When the real-time detection result of the humidity sensor at the discharge port exceeds the preset humidity range, the controller is set to have a higher adjustment priority for the exhaust component than for the aeration component. This is because the exhaust component is closer to the discharge port, and the adjustment of its working parameters has a more intuitive and effective effect on the real-time detection result of the humidity sensor at the discharge port. At this time, the adjustment of the exhaust component working parameters has a smaller effect on the real-time detection result of the humidity sensor at the feed port and the inner side of the middle of the box. In addition, the controller is set to have a higher adjustment priority for the exhaust pressure and exhaust flow rate than for the exhaust time during the adjustment of the exhaust component. This is because the exhaust pressure and exhaust flow rate have a more direct and faster effect on the humidity of the material. At the same time, since the time period for aerating, standing and exhausting the material within a unit time period is fixed, the adjustment of the exhaust time is bound to affect the aeration and standing time of the material, so that the process and effect of drying and oxidizing the material to produce microorganisms are difficult to control. Therefore, the adjustment priority of the exhaust time is suitable to be set to be relatively low. When the real-time detection results of the humidity sensors at the feed inlet position and the inner middle of the box body exceed the preset humidity range, the controller is set to give higher adjustment priority to the aeration component than to the exhaust component. Since the material is about to enter or is in the box body at this time, the adjustment effect of the aeration component inside the box body at this time has a more intuitive and effective impact on the real-time detection results of the humidity sensors at the feed inlet position and the inner middle of the box body, and this adjustment process can also provide a stable environment for the subsequent drying process of the material entering. In the specific setting of the controller's adjustment process of the aeration component, the controller has a higher adjustment priority for the aeration flow and aeration pressure than for the aeration time, and the adjustment priority for the aeration time is higher than that for the aeration angle and aeration pressure. The adjustment priority of the sequence, the adjustment of aeration flow and aeration pressure has the most direct and effective impact on the aeration effect, so it needs to have the highest adjustment priority; and because the time period for aeration, standing and pumping of materials within a unit time period is fixed, the adjustment of aeration time is bound to affect the time for standing and pumping of materials, so the process and effect of drying and oxidizing materials to produce microorganisms are difficult to control, so the adjustment priority of aeration time should not be set to the highest; and the adjustment of aeration angle and aeration sequence requires the pre-adjustment of the installation angle of the aeration branch pipe and the adjustment of the opening and closing sequence inside the controller, respectively. The adjustment operation volume is large but the effect on the aeration effect is small, so its adjustment priority is set to the lowest.

[0020] 4) The present invention provides a biological drying bin with an auxiliary heating device and a control method thereof. By specifically setting that when the real-time detection result of the temperature sensor at the feed inlet position exceeds the preset temperature range, the controller has a higher priority for adjusting the heating power and the heating area than for adjusting the heating time and the heating speed. This is because at this time the material is about to enter or has just entered the inside of the box and the drying process has not yet begun. Therefore, the adjustment of the heating power is conducive to adjusting the heating intensity of the material, and the adjustment of the heating area is conducive to adjusting the heating range of the material. The adjustment of the subsequent material heating effect is more intuitive and effective; and when the real-time detection result of the temperature sensor on the inner side of the middle of the box exceeds the preset temperature range, the controller has a higher priority for adjusting the heating time and the heating speed than for adjusting the heating power and the heating area. At this time, the material inside the box is already in the heating process or is about to be discharged after heating. Under the premise of insufficient heating time, the heating effect of the material on the heating power and the heating area is not obvious. Therefore, at this time, the adjustment priority of the heating time and the heating speed needs to be set to a higher level to ensure that the material has sufficient and adequate heating time.

[0021] 5) The present invention provides a biological drying bin with an auxiliary heating device and a control method thereof, which is mainly used to reduce the moisture content of the material and is supplemented by assisting the generation of microorganisms in the material. The stirring method adopts intermittent full mixing and stirring with a high frequency. Aeration, standing and exhaust are started in sequence, and stirring is performed synchronously during aeration and exhaust. The moisture content of the material after drying in the drying bin is ≤55%, and the material temperature is ≥45°C. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the biological drying bin of the present invention.

[0023] Figure 2 It is a structural side view of the biological drying bin of the present invention.

[0024] Figure 3 It is a schematic structural diagram of the auxiliary heating device of the present invention. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention 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 limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] [First embodiment] like Figure 1-3The figure shows a biological drying chamber with an auxiliary heating device provided by the first embodiment of the present invention. Figure 1 The box body 1 includes a box body 1 and a cover body 2 arranged on the top of the box body 1. The cover body 2 is fixed to the top of the box body 1 in a detachable manner to facilitate the subsequent cleaning, replacement and maintenance of the internal structural components of the box body 1. The box body 1 can be supported on the ground by the support feet 11 to be installed. The inner wall of the box body 1 is preferably made of stainless steel to increase the service life after long-term contact with the material.

[0029] A driving motor 3 is fixed to one side of the box body 1 through a motor mounting bracket 31, and the output shaft of the driving motor 3 is drivingly connected to the stirring shaft 4 that penetrates the box body 1, and the stirring shaft 4 is rotatably arranged inside the box body 1. The output power of the driving motor 3 can be transmitted to the stirring shaft 4 through the transmission member to drive the stirring shaft 4 to rotate inside the box body 1. The driving motor 3 in this embodiment uses a bidirectional driving motor to realize bidirectional rotation drive of the stirring shaft 4. The transmission member can be a mechanical transmission member such as a spur gear, a bevel gear, a worm gear, etc. commonly used in the mechanical field; Figure 1 As shown, both ends of the stirring shaft 4 in this embodiment extend outward from the casing 1 and are supported on the outside of the casing 1 by bearings 41. Blades 42 are provided on the periphery of the stirring shaft 4, and the blades 42 are located on opposite sides of the two ends of the stirring shaft 4, thereby ensuring that the stirring effect on both ends of the stirring shaft 4 inside the casing 1 is uniform and sufficient without leaving any dead angles.

[0030] A feed inlet (not shown) is provided on the side of the box 1 away from the drive motor 3, and a discharge port (not shown) is provided on the side close to the drive motor 3; the material to be dried (usually with a moisture content of less than 80% by mass) after the previous treatment can enter the box 1 through the feed inlet, and the material after the drying treatment is discharged to the subsequent composting position through the discharge port. Preferably, the feed inlet and the discharge port are both provided with electric valves connected to the controller signal to control the opening and closing of the feed inlet and the discharge port accordingly.

[0031] The improvement of this embodiment compared with the prior art is: An aeration component 5 is also provided inside the box body 1, and an exhaust port 6 connected to the exhaust component is provided on the top of the cover body 2. The controller is respectively connected to the aeration component 5 and the exhaust component by signal to correspondingly control and adjust the opening and closing of the aeration component 5 and the exhaust component and their working parameters; an auxiliary heating device 7 is also provided on the outside of the box body 1, and the controller is connected to the auxiliary heating device 7 by signal to correspondingly control and adjust the opening and closing of the auxiliary heating device 7 and their working parameters; while the moisture content of the material inside the box body is effectively reduced by the exhaust component, oxygen inside the box body is brought into the box body through the aeration component to help increase the amount of microorganisms in the material, so that it can meet the requirements of subsequent aerobic composting for the amount of microorganisms; at the same time, by providing the auxiliary heating device, the interior of the drying bin can be maintained in a temperature range suitable for material drying, and the temperature of the auxiliary heating device can be correspondingly controlled and adjusted according to the real-time detection results of the temperature sensor, thereby further improving the application scope of drying, and improving the drying effect and drying efficiency.

[0032] like Figure 1-2 As shown, the aeration assembly 5 in this embodiment includes an aeration main pipe 51, one end of which is connected to the inside of the stirring shaft 4 outside the box body, the stirring shaft 4 is set as a hollow shaft, and the outer wall of the stirring shaft 4 is evenly provided with a plurality of aeration holes connected to the inside thereof; the other end of the aeration main pipe 51 is connected to the aeration branch pipe 52 inside the box body, the aeration branch pipe 52 is located on both sides of the stirring shaft 4 and is evenly arranged along the inner wall of the box body 1, by setting the aeration assembly to include an aeration main pipe, and one end of the aeration main pipe is connected to the hollow structure inside the stirring shaft, and then aeration is performed on the inside of the box body through the aeration holes on the outer wall of the stirring shaft during stirring, and the other end of the aeration main pipe is connected to the aeration branch pipe on the inner wall of the box body to achieve aeration, so that static aeration is achieved through the aeration branch pipe during the drying process, and dynamic aeration is achieved through the stirring shaft, so that the material inside the box body is in a coordinated aeration environment between the two, thereby promoting more uniform and sufficient aeration of the material, and further improving the aeration effect and aeration efficiency.

[0033] A plurality of humidity sensors are arranged on the top of the box body 1, and the humidity sensors are arranged at least at the feed inlet position, the discharge port position and the inner side of the middle part of the box body 1 to detect the humidity of the material at each position in real time; in this embodiment, the adjustable working parameters of the aeration component 5 include at least aeration flow, aeration pressure, aeration time, aeration angle and aeration sequence; the adjustable working parameters of the exhaust component 5 include at least exhaust flow, exhaust pressure, and exhaust time.

[0034] The controller controls the auxiliary heating component as follows based on the real-time detection results of the humidity sensor: When the real-time detection result of the humidity sensor at the discharge port exceeds the preset humidity range, the controller has a higher priority in regulating the exhaust component than the aeration component; and in the process of regulating the exhaust component, the controller has a higher priority in regulating the exhaust pressure and exhaust flow than the exhaust time; When the real-time detection results of the humidity sensors at the feed port position and the inner middle part of the box body exceed the preset humidity range, the controller's adjustment priority for the aeration component is higher than the adjustment priority for the exhaust component; and in the process of the controller adjusting the aeration component, the controller's adjustment priority for the aeration flow and aeration pressure is higher than the adjustment priority for the aeration time, and the adjustment priority for the aeration time is higher than the adjustment priority for the aeration angle and aeration sequence.

[0035] When the real-time detection result of the humidity sensor at the discharge port exceeds the preset humidity range, the controller is set to give higher adjustment priority to the vacuum component than to the aeration component. This is because the vacuum component is closer to the discharge port, and the adjustment of its working parameters has a more intuitive and effective effect on the real-time detection result of the humidity sensor at the discharge port. At this time, the adjustment of the working parameters of the vacuum component has less effect on the real-time detection result of the humidity sensor at the inlet position and the inner side of the middle of the box body. In addition, it is set that in the process of adjusting the vacuum component by the controller, the adjustment priority of the vacuum pressure and the vacuum flow rate by the controller is higher than the adjustment priority of the vacuum time. This is because the vacuum pressure and the vacuum flow rate have a more direct and faster effect on the humidity of the material. At the same time, since the time period for aerating, standing and vacuuming the material within a unit time period is fixed, the adjustment of the vacuum time is bound to affect the aeration and standing time of the material. Therefore, the process and effect of drying and oxidizing the material to produce microorganisms are difficult to control. Therefore, the adjustment priority of the vacuum time is suitable to be set to be relatively low. When the real-time detection results of the humidity sensors at the feed inlet position and the inner middle of the box body exceed the preset humidity range, the controller is set to give higher adjustment priority to the aeration component than to the exhaust component. Since the material is about to enter or is in the box body at this time, the adjustment effect of the aeration component inside the box body at this time has a more intuitive and effective impact on the real-time detection results of the humidity sensors at the feed inlet position and the inner middle of the box body, and this adjustment process can also provide a stable environment for the subsequent drying process of the material entering. In the specific setting of the controller's adjustment process of the aeration component, the controller has a higher adjustment priority for the aeration flow and aeration pressure than for the aeration time, and the adjustment priority for the aeration time is higher than that for the aeration angle and aeration pressure. The adjustment priority of the sequence, the adjustment of aeration flow and aeration pressure has the most direct and effective impact on the aeration effect, so it needs to have the highest adjustment priority; and because the time period for aeration, standing and pumping of materials within a unit time period is fixed, the adjustment of aeration time is bound to affect the time for standing and pumping of materials, so the process and effect of drying and oxidizing materials to produce microorganisms are difficult to control, so the adjustment priority of aeration time should not be set to the highest; and the adjustment of aeration angle and aeration sequence requires the pre-adjustment of the installation angle of the aeration branch pipe and the adjustment of the opening and closing sequence inside the controller, respectively. The adjustment operation volume is large but the effect on the aeration effect is small, so its adjustment priority is set to the lowest.

[0036] like Figure 3 As shown, the auxiliary heating device 7 in this embodiment includes an auxiliary belt 71 wrapped around the outer wall and the bottom of the box body 1 and a heating wire 72 arranged inside the auxiliary belt 71. The heating wire 72 is connected to an external power source, and the controller is connected to the external power source signal to control the opening and closing of the power source and its working parameters.

[0037] like Figure 3 As shown, a plurality of temperature sensors C are arranged inside the box 1, and the temperature sensors are arranged at least at the feed port position, the discharge port position and the inner side of the middle part of the box 1 to perform real-time detection of the material temperature at each position; the adjustable parameters of the auxiliary heating device 7 include at least heating time, heating speed, heating power and heating area.

[0038] The controller controls the auxiliary heating component as follows based on the real-time detection results of the temperature sensor: When the real-time detection result of the temperature sensor at the inlet position exceeds the preset temperature range, the controller has a higher priority in regulating the heating power and heating area than in regulating the heating time and heating speed; When the real-time detection result of the temperature sensor on the inner side of the middle of the box body exceeds the preset temperature range, the controller has a higher priority in adjusting the heating time and heating speed than the heating power and heating area.

[0039] By specifically setting that when the real-time detection result of the temperature sensor at the inlet position exceeds the preset temperature range, the controller's adjustment priority for the heating power and heating area is higher than the adjustment priority for the heating time and heating speed. This is because at this time the material is about to enter or has just entered the inside of the box and the drying process has not yet begun. Therefore, the adjustment of the heating power is beneficial to adjusting the heating intensity of the material, and the adjustment of the heating area is beneficial to adjusting the heating range of the material. The adjustment of the subsequent material heating effect is more intuitive and effective; and when the real-time detection result of the temperature sensor on the inner side of the middle of the box exceeds the preset temperature range, the controller's adjustment priority for the heating time and heating speed is higher than the adjustment priority for the heating power and heating area. At this time, the material inside the box is already in the heating process or is about to be discharged after heating. Under the premise of insufficient heating time, the adjustment of the heating power and heating area does not have an obvious heating effect on the material. Therefore, at this time, the adjustment priority of the heating time and heating speed needs to be set to a higher level to ensure that the material has sufficient and sufficient heating time.

[0040] [Second embodiment] The second embodiment of the present invention further provides a control method for the biological drying bin with an auxiliary heating device mentioned in the first embodiment, comprising the following steps: S1: The controller controls the auxiliary heating device to start preheating the internal environment of the box and keeps the auxiliary heating device turned on in subsequent steps; S2: Feed the material to be dried into the box through the feed inlet; S3: The controller starts the aeration component to aerate the inside of the box, and in this process, the drive motor is started to drive the stirring shaft to rotate and stir the material; taking a 1h time period as an example, the duration of this step is generally 10-20min / h, the stirring time is 8-10min / h, and the stirring speed of the stirring shaft is 6-10 rpm; S4: The controller controls the aeration assembly to be turned off, and at the same time turns off the drive motor to stop the stirring shaft from rotating and stirring the material; S5: The controller starts the vacuum component to vacuum the inside of the box, and in this process, the drive motor is started to drive the stirring shaft to rotate and stir the material; taking a 1h time period as an example, the duration of this step is generally 10-20min / h, the stirring time is 8-10min / h, and the stirring speed of the stirring shaft is 6-10 rpm; S6: After the discharge sampling test of the discharge port is qualified, the discharge port is opened, and the dried material is taken out from the discharge port and sent to the subsequent composting location.

[0041] The control method provided in this embodiment is mainly to reduce the moisture content of the material, and is supplemented by assisting the generation of internal microorganisms in the material. The stirring method adopts intermittent full mixing and stirring, and the stirring frequency is high. Aeration, standing, and exhaust are turned on in sequence, and stirring is performed synchronously during aeration and exhaust to achieve rapid removal of moisture from the material. The material contacts oxygen during the stirring process and slowly moves from the feed port to the discharge port along the axial direction, so that the moisture content of the material after drying in the drying bin is ≤55%, and the material temperature is ≥45°C. The material stays in the drying bin for 22-24h, and the continuous opening temperature range after the auxiliary heating device is turned on is 45~50°C.

[0042] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A biological drying bin with an auxiliary heating device, comprising a box body (1) and a cover body (2) arranged on the top of the box body (1), a driving motor (3) being fixed on one side of the box body (1), an output shaft of the driving motor (3) being drivingly connected to a stirring shaft (4) penetrating the box body (1), the stirring shaft (4) being rotatably penetrating the interior of the box body (1), a material inlet being provided on a side of the box body (1) away from the driving motor (3), and a material outlet being provided on a side of the box body (1) close to the driving motor (3); Features: An aeration component (5) is also arranged inside the box (1); a suction port (6) connected to the suction component is provided on the top of the cover (2); and a controller is respectively connected to the aeration component (5) and the suction component by signals to correspondingly control and adjust the opening and closing of the aeration component (5) and the suction component and their working parameters; An auxiliary heating device (7) is also provided on the outside of the box body (1), and the controller is signal-connected to the auxiliary heating device (7) to correspondingly control and adjust the opening and closing of the auxiliary heating device (7) and its operating parameters.

2. The biological drying bin with auxiliary heating device according to claim 1, characterized in that: The drive motor (3) is a bidirectional drive motor.

3. The biological drying chamber with auxiliary heating device according to claim 1, characterized in that: Both ends of the stirring shaft (4) extend outward from the casing (1) and are supported on the outside of the casing (1) via bearings (41). Blades (42) are provided on the outer periphery of the stirring shaft (4), and the blades (42) are located on opposite sides of the two ends of the stirring shaft (4).

4. The biological drying bin with auxiliary heating device according to claim 3, characterized in that: The aeration assembly (5) comprises an aeration main pipe (51), one end of which is connected to the interior of the stirring shaft (4) at the outside of the box body, the stirring shaft (4) being arranged as a hollow shaft, and a plurality of aeration holes connected to the interior of the stirring shaft (4) being evenly arranged on the outer wall of the stirring shaft (4); the other end of the aeration main pipe (51) is connected to an aeration branch pipe (52) at the inside of the box body, the aeration branch pipe (52) being located on both sides of the stirring shaft (4) and evenly arranged along the inner wall of the box body (1).

5. The biological drying bin with auxiliary heating device according to claim 4, characterized in that: A plurality of humidity sensors are arranged on the top of the box (1), and the humidity sensors are arranged at least at the inlet position, the outlet position and the inner side of the middle of the box (1); the adjustable working parameters of the aeration component (5) at least include aeration flow, aeration pressure, aeration time, aeration angle and aeration sequence; the adjustable working parameters of the exhaust component (5) at least include exhaust flow, exhaust pressure and exhaust time.

6. The biological drying chamber with auxiliary heating device according to claim 5, characterized in that: The controller controls the auxiliary heating component as follows according to the real-time detection result of the humidity sensor: When the real-time detection result of the humidity sensor at the discharge port exceeds the preset humidity range, the controller has a higher priority in regulating the exhaust component than the aeration component; and in the process of regulating the exhaust component, the controller has a higher priority in regulating the exhaust pressure and exhaust flow than the exhaust time; When the real-time detection results of the humidity sensors at the feed port position and the inner middle part of the box body exceed the preset humidity range, the controller's adjustment priority for the aeration component is higher than the adjustment priority for the exhaust component; and in the process of the controller adjusting the aeration component, the controller's adjustment priority for the aeration flow and aeration pressure is higher than the adjustment priority for the aeration time, and the adjustment priority for the aeration time is higher than the adjustment priority for the aeration angle and aeration sequence.

7. The biological drying chamber with auxiliary heating device according to claim 1, characterized in that: The auxiliary heating device (7) comprises an auxiliary heat belt (71) covering the outer wall and bottom of the box body (1) and a heating wire (72) arranged inside the auxiliary heat belt (71); the heating wire (72) is connected to an external power source, and the controller is connected to the external power source signal to control the opening and closing of the power source and its working parameters.

8. The biological drying chamber with auxiliary heating device according to claim 7, characterized in that: A plurality of temperature sensors (C) are arranged inside the box (1), and the temperature sensors are arranged at least at the inlet position, the outlet position and the inner side of the middle of the box (1); the adjustable parameters of the auxiliary heating device (7) include at least heating time, heating speed, heating power and heating area.

9. The biological drying chamber with auxiliary heating device according to claim 8, characterized in that: The controller controls the auxiliary heating component as follows according to the real-time detection result of the temperature sensor: When the real-time detection result of the temperature sensor at the inlet position exceeds the preset temperature range, the controller has a higher priority in regulating the heating power and heating area than in regulating the heating time and heating speed; When the real-time detection result of the temperature sensor on the inner side of the middle of the box body exceeds the preset temperature range, the controller has a higher priority in adjusting the heating time and heating speed than the heating power and heating area.

10. A control method for a biological drying bin with an auxiliary heating device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: The controller controls the auxiliary heating device to start preheating the internal environment of the box and keeps the auxiliary heating device turned on in subsequent steps; S2: Feed the material to be dried into the box through the feed inlet; S3: The controller starts the aeration component to aerate the inside of the box, and in this process, the drive motor is started to drive the stirring shaft to rotate and stir the material; S4: The controller controls the aeration assembly to be turned off, and at the same time turns off the drive motor to stop the stirring shaft from rotating and stirring the material; S5: The controller starts the vacuum component to vacuum the inside of the box, and in the process starts the drive motor to drive the stirring shaft to rotate and stir the material; S6: After the discharge sampling test of the discharge port is qualified, the discharge port is opened, and the dried material is taken out from the discharge port and sent to the subsequent composting location.

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