Bio-drying bin with auxiliary heating device and control method thereof

Abstract

The application provides a biological drying bin with auxiliary heating device and a control method thereof, which comprises a box body and a cover body arranged on the top of the box body. A driving motor is fixed on 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. The stirring shaft penetrates through the box body in a rotatable mode. An inlet is arranged on the side of the box body away from the driving motor. An outlet is arranged on the side of the box body close to the driving motor. The application is provided with an aeration assembly and an air extraction assembly. The air extraction assembly effectively reduces the water content of the materials in the box body. The oxygen brought into the box body by the aeration assembly helps to increase the amount of microorganisms in the materials. The auxiliary heating device is arranged to keep the temperature in the drying bin within a range suitable for drying the materials. The temperature of the auxiliary heating device is controlled and adjusted according to the real-time detection results of the temperature sensor, so as to further improve the drying range, the drying effect and the drying efficiency.

Description

TECHNICAL FIELD

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

[0002] With more and more kitchen waste, 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 industry in China, the amount of sludge is increasing. At present, the method of co-processing kitchen waste and sludge in sewage treatment plant is commonly used in the industry, which not only stabilizes the treatment of kitchen waste and sludge, but also makes it harmless and lightweight, and produces usable biogas and garden biochar soil, turning waste into treasure.

[0003] Kitchen waste is a kind of organic waste produced in the process of daily food processing and eating, mainly including vegetable and fruit residues, leftovers, rotten food, fruit shells, eggshells and other deteriorated food. Because it contains a large amount of water and rich organic matter, if kitchen waste is stored naturally, it is easy to rot, deteriorate, emit foul odor, breed bacteria and mosquitoes and flies, and further pollute the environment. Through resource utilization, kitchen waste can be turned into treasure, and organic fertilizer, feed and fuel can be produced, which is of great significance to environmental protection and sustainable economic development. Therefore, how to conveniently and efficiently treat kitchen waste has been a common concern of the government and the community.

[0004] In the research of decentralized integrated treatment equipment and technology of kitchen waste, how to quickly dewater and dry the kitchen waste and other materials to the required moisture content for the subsequent composting is the core technology of the integrated treatment technology of kitchen waste. This technology limits the size of the equipment, the energy consumption of the product and whether the subsequent composting can be successful.

[0005] Therefore, it is urgent to provide a biological drying bin with auxiliary heating device and a control method thereof to solve the defects and deficiencies in the prior art. SUMMARY

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

[0007] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0008] A biological drying bin with auxiliary heating device, comprising a box body and a cover body arranged on the top of the box body, a drive motor is fixed on one side of the box body, the output shaft of the drive motor is in transmission connection with a stirring shaft penetrating the box body, the stirring shaft is rotatably arranged in the box body, an inlet is arranged on the side of the box body away from the drive motor, and an outlet is arranged on the side of the box body close to the drive motor.

[0009] characterized in that:

[0010] The inside of the box is further provided with an aeration assembly, the top of the cover is provided with an air outlet communicated with the air extraction assembly, and the controller is signal connected with the aeration assembly and the air extraction assembly to correspondingly control and adjust the opening and closing and working parameters of the aeration assembly and the air extraction assembly.

[0011] The outside of the box is further provided with an auxiliary heating device, and the controller is signal connected with the auxiliary heating device to correspondingly control and adjust the opening and closing and working parameters of the auxiliary heating device.

[0012] As a further preferred embodiment of the present application, the driving motor is a bidirectional driving motor.

[0013] As a further preferred embodiment of the present application, the two ends of the stirring shaft are arranged to pass out of the box and are supported on the outside of the box through bearings, the outer periphery of the stirring shaft is provided with blades, and the blades are located on the opposite sides of the two ends of the stirring shaft.

[0014] As a further preferred embodiment of the present application, the aeration assembly comprises an aeration main pipe, one end of the aeration main pipe is communicated with the inside of the stirring shaft on the outside of the box, the stirring shaft is a hollow shaft, and the outer wall of the stirring shaft is uniformly provided with a plurality of aeration holes communicated with the inside thereof; the other end of the aeration main pipe is communicated with an aeration branch pipe on the inside of the box, and the aeration branch pipe is arranged on the two sides of the stirring shaft and is uniformly arranged along the inner wall of the box.

[0015] As a further preferred embodiment of the present application, the top of the box is provided with a plurality of humidity sensors, the temperature sensor is arranged at least at the inlet position, the outlet position and the inside of the middle part of the box; the adjustable working parameters of the aeration assembly at least include aeration flow, aeration pressure, aeration time, aeration angle and aeration sequence; and the adjustable working parameters of the air extraction assembly at least include air extraction flow, air extraction pressure and air extraction time.

[0016] As a further preferred embodiment of the present application, the controller controls the aeration assembly and the air extraction assembly according to the real-time detection results of the humidity sensors as follows:

[0017] When the real-time detection result of the humidity sensor at the outlet position exceeds the preset humidity range, the adjustment priority of the controller to the air extraction assembly is higher than that to the aeration assembly; and in the adjustment process of the air extraction assembly, the adjustment priority of the controller to the air extraction pressure and the air extraction flow is higher than that to the air extraction time.

[0018] When the real-time detection result of the humidity sensor at the inlet position and the inside of the middle part of the box exceeds the preset humidity range, the controller has a higher adjustment priority for the aeration assembly than for the air extraction assembly; and in the adjustment process of the aeration assembly, the controller has a higher adjustment priority for the aeration flow and the aeration pressure than for the aeration time, and has a higher adjustment priority for the aeration time than for the aeration angle and the aeration sequence.

[0019] As a further preferred embodiment of the present application, the auxiliary heating device comprises auxiliary heating belts wrapped around the outer wall and the bottom of the box and heating wires arranged inside the auxiliary heating belts, the heating wires being connected with an external power source, and the controller being connected with the external power source in signal connection to control the opening and closing of the power source and the working parameters thereof.

[0020] As a further preferred embodiment of the present application, the inside of the box is provided with a plurality of temperature sensors, the temperature sensors being arranged at least at the inlet position, the outlet position and the inside of the middle part of the box; and the adjustable parameters of the auxiliary heating device include at least the heating time, the heating speed, the heating power and the heating area.

[0021] As a further preferred embodiment of the present application, the controller controls the auxiliary heating assembly according to the real-time detection result of the temperature sensor as follows:

[0022] When the real-time detection result of the temperature sensor at the inlet position exceeds the preset temperature range, the controller has a higher adjustment priority for the heating power and the heating area than for the heating time and the heating speed;

[0023] When the real-time detection result of the temperature sensor at the inside of the middle part of the box exceeds the preset temperature range, the controller has a higher adjustment priority for the heating time and the heating speed than for the heating power and the heating area.

[0024] Further, the present application also provides a control method of a biological drying bin with an auxiliary heating device, characterized by comprising the following steps:

[0025] S1: the controller controls the auxiliary heating device to start preheating the inside environment of the box and keeps the auxiliary heating device open in the subsequent steps;

[0026] S2: the material to be dried is sent into the inside of the box from the inlet;

[0027] S3: the controller controls the aeration assembly to start aeration of the inside of the box, and in this process, the driving motor is started to drive the stirring shaft to rotate and stir the material;

[0028] S4: the controller controls the aeration assembly to be closed, and at the same time, the driving motor is closed to stop the stirring shaft from rotating and stirring the material;

[0029] S5: the controller controls the start of the air extraction assembly to extract air from the inside of the box, and in the process, the driving motor is started to drive the stirring shaft to rotate and stir the material;

[0030] S6: after the sample detection of the discharge outlet is qualified, the discharge outlet is opened, and the dried material is taken out from the discharge outlet and sent to the subsequent composting position.

[0031] Compared with the prior art, the advantages and positive effects obtained by the present application are:

[0032] 1) The present application provides a biological drying bin with auxiliary heating device and a control method thereof, by setting the aeration assembly and the air extraction assembly, the air extraction assembly effectively reduces the moisture content of the material (kitchen garbage, etc.) in the box, at the same time, the oxygen brought into the box by the aeration assembly helps to increase the amount of microorganisms in the material, so as to meet the demand of subsequent aerobic composting for the amount of microorganisms; at the same time, by setting the auxiliary heating device, the inside of the drying bin can be kept in a temperature range suitable for material drying, and the temperature of the auxiliary heating device can be controlled and adjusted according to the real-time detection result of the temperature sensor, thereby further improving the drying application range, improving the drying effect and drying efficiency.

[0033] 2) The present application provides a biological drying bin with auxiliary heating device and a control method thereof, by setting the aeration assembly to include an aeration main pipe, and the aeration main pipe is in communication with the hollow structure inside the stirring shaft at one end, and the aeration hole on the outer wall of the stirring shaft is used to aerate the inside of the box during stirring, and the other end of the aeration main pipe is in communication with the aeration branch pipe on the inner wall of the box to realize aeration, so that static aeration is realized through the aeration branch pipe and dynamic aeration is realized through the stirring shaft during the drying process, so that the material in the box is in a synergistic aeration environment between the two, thereby promoting more uniform and sufficient aeration of the material, and further improving the aeration effect and aeration efficiency.

[0034] 3) The application provides a biological drying bin with auxiliary heating device and its control method, by setting the controller to have higher adjustment priority for the air extraction component than for the aeration component when the real-time detection result of the humidity sensor at the discharge port position exceeds the preset humidity range, because the air extraction component is closer to the discharge port position, and the adjustment of its working parameters has more direct and effective influence on the real-time detection result of the humidity sensor at the discharge port position, and at this time, the adjustment of the working parameters of the air extraction component has less influence on the real-time detection result of the humidity sensor at the inlet port position and the inside of the middle part of the box; and the controller is set to have higher adjustment priority for the air extraction pressure and flow than for the air extraction time during the adjustment process of the air extraction component, because the air extraction pressure and flow have more direct and rapid influence on the material humidity, and at the same time, because the time periods for aeration, standing and air extraction of the material within a unit time period are fixed, the adjustment of the air extraction time will inevitably affect the aeration and standing time of the material, and thus the process and effect of the material drying and microbial oxidation are difficult to control, so the adjustment priority of the air extraction time is relatively low.

[0035] By setting the controller to have higher adjustment priority for the aeration component than for the air extraction component when the real-time detection result of the humidity sensor at the inlet port position and the inside of the middle part of the box exceeds the preset humidity range, because at this time the material is about to enter or is in the inside of the box, so the adjustment effect of the aeration component in the inside of the box has more direct and effective influence on the real-time detection result of the humidity sensor at the inlet port position and the inside of the middle part of the box, and through this adjustment process, a stable environment can also be provided for the subsequent drying process of the entering material; and during the adjustment process of the aeration component by the controller, the controller is set to have higher adjustment priority for the aeration flow and pressure than for the aeration time, and the adjustment priority of the aeration time is higher than that of the aeration angle and sequence, the adjustment of the aeration flow and pressure has the most direct and effective influence on the aeration effect, so it needs to have the highest adjustment priority; and because the time periods for aeration, standing and air extraction of the material within a unit time period are fixed, the adjustment of the aeration time will inevitably affect the standing and air extraction time of the material, and thus the process and effect of the material drying and microbial oxidation are difficult to control, so the adjustment priority of the aeration time is not suitable to be the highest; and the adjustment of the aeration angle and sequence needs to adjust the installation angle of the aeration branch pipe in advance and adjust the opening and closing sequence in the controller, respectively, which has large adjustment operation amount but has less influence on the aeration effect, so the adjustment priority is set to be the lowest.

[0036] 4) The present application provides a biological drying bin with auxiliary heating device and its control method, by specifically setting when the real-time detection result of the temperature sensor at the inlet position exceeds the preset temperature range, the adjustment priority of the controller on the heating power and heating area is higher than that on the heating time and heating speed, because at this time the material is about to enter or has just entered the inside of the box and has not started the drying process, so 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, which is more intuitive and effective for adjusting the subsequent material heating effect; when the real-time detection result of the temperature sensor inside the middle of the box exceeds the preset temperature range, the adjustment priority of the controller on the heating time and heating speed is higher than that on the heating power and heating area, because at this time the material in the box has been in the heating process or has just finished heating and is about to be discharged, so under the premise that the heating time is not enough, the adjustment of the heating power and heating area on the heating effect of the material is not obvious, so the adjustment priority of the heating time and heating speed needs to be set higher to ensure that the material has sufficient and sufficient heating time.

[0037] 5) The present application provides a biological drying bin with auxiliary heating device and its control method, in order to reduce the moisture content of the material, and to assist the generation of microorganisms in the material, the stirring mode adopts intermittent full mixing stirring, the stirring frequency is high, the aeration, standing and air extraction are opened in turn, and the stirring is carried out synchronously during aeration and air extraction, which can make the moisture content of the material ≤55% after drying in the drying bin, and the material temperature ≥45℃. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 The structure of the biological drying bin of the present application is shown in the figure.

[0039] Figure 2 The structure of the biological drying bin of the present application is shown in the figure.

[0040] Figure 3 The structure of the auxiliary heating device of the present application is shown in the figure. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0042] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] [First embodiment]

[0045] As Figures 1-3 The first embodiment of the present application provides a biological drying bin with auxiliary heating device, as Figure 1 The box body 1 is supported on the ground at the installation position by the supporting legs 11, and the inner wall of the box body 1 is preferably made of stainless steel to improve the service life after long-term contact with the material.

[0046] One side of the box body 1 is fixed with a driving motor 3 through a motor mounting bracket 31, the output shaft of the driving motor 3 is in transmission connection with a stirring shaft 4 penetrating through the box body 1, the stirring shaft 4 is rotatably arranged in the box body 1, and the output power of the driving motor 3 can be transmitted to the stirring shaft 4 through a transmission member to drive the stirring shaft 4 to rotate in the box body 1. The driving motor 3 in the embodiment is a bidirectional driving motor, which can realize bidirectional rotation driving of the stirring shaft 4. The transmission member can be a mechanical transmission member commonly used in the mechanical field, such as spur gear, bevel gear, worm and worm gear, etc. Figure 1 As

[0047] The box 1 is provided with an inlet (not shown) away from the driving motor 3, and an outlet (not shown) close to the driving motor 3; the material to be dried after the front processing (usually with a water content of less than 80% by mass) can enter the box 1 through the inlet, and the material after drying can be discharged to the subsequent composting position through the outlet; as an optimization, the inlet and outlet are both provided with electric valves connected with the controller to control the opening and closing of the inlet and outlet.

[0048] The improvement of the present embodiment compared with the prior art is that:

[0049] The inside of the box 1 is also provided with an aeration assembly 5, and the top of the cover 2 is provided with an air outlet 6 communicating with the air extraction assembly; the controller is connected with the aeration assembly 5 and the air extraction assembly to control and adjust the opening and closing of the aeration assembly 5 and the air extraction assembly and their working parameters; the outside of the box 1 is also provided with an auxiliary heating device 7, and the controller is connected with the auxiliary heating device 7 to control and adjust the opening and closing of the auxiliary heating device 7 and its working parameters; through the air extraction assembly, the water content of the material in the box is effectively reduced, and at the same time, the oxygen brought into the box by the aeration assembly helps to increase the amount of microorganisms in the material, so as to meet the demand of subsequent aerobic composting for the amount of microorganisms; at the same time, the auxiliary heating device is provided, so that the inside of the drying bin can be kept in a temperature range suitable for material drying, and the temperature of the auxiliary heating device can be controlled and adjusted according to the real-time detection result of the temperature sensor, thereby further improving the drying application range and the drying effect and efficiency.

[0050] As shown in Figures 1-2 The aeration assembly 5 in the present embodiment includes an aeration main pipe 51, one end of the aeration main pipe 51 communicates with the inside of the stirring shaft 4 outside the box, and the stirring shaft 4 is provided as a hollow shaft, and the outer wall of the stirring shaft 4 is uniformly provided with a plurality of aeration holes communicating with the inside thereof; the other end of the aeration main pipe 51 communicates with an aeration branch pipe 52 inside the box, and the aeration branch pipe 52 is located on both sides of the stirring shaft 4 and is uniformly arranged along the inner wall of the box 1; by setting the aeration assembly to include an aeration main pipe, one end of which communicates with the hollow structure inside the stirring shaft, and then through the aeration holes on the outer wall of the stirring shaft to aerate the inside of the box during stirring, and the other end of the aeration main pipe communicates with the aeration branch pipe on the inner wall of the box to realize aeration, so that static aeration is realized through the aeration branch pipe and dynamic aeration is realized through the stirring shaft during the drying process, so that the material in the box is in a synergistic aeration environment between the two, thereby promoting more uniform and sufficient aeration of the material, and further improving the aeration effect and efficiency.

[0051] The top of the box 1 is provided with a plurality of humidity sensors, which are arranged at least at the inlet position, the outlet position and the inner side of the middle of the box 1 to detect the material humidity at each position in real time; in this embodiment, the adjustable working parameters of the aeration assembly 5 include at least aeration flow, aeration pressure, aeration time, aeration angle and aeration sequence; the adjustable working parameters of the air extraction assembly include at least air extraction flow, air extraction pressure and air extraction time.

[0052] The controller controls the aeration assembly and the air extraction assembly according to the real-time detection results of the humidity sensors as follows:

[0053] When the real-time detection result of the humidity sensor at the outlet position exceeds the preset humidity range, the controller sets the adjustment priority of the air extraction assembly to be higher than that of the aeration assembly; and during the adjustment of the air extraction assembly, the controller sets the adjustment priority of the air extraction pressure and the air extraction flow to be higher than that of the air extraction time.

[0054] When the real-time detection results of the humidity sensors at the inlet position and the inner side of the middle of the box exceed the preset humidity range, the controller sets the adjustment priority of the aeration assembly to be higher than that of the air extraction assembly; and during the adjustment of the aeration assembly, the controller sets the adjustment priority of the aeration flow and the aeration pressure to be higher than that of the aeration time, and the adjustment priority of the aeration time to be higher than that of the aeration angle and the aeration sequence.

[0055] By setting the adjustment priority of the air extraction assembly to be higher than that of the aeration assembly when the real-time detection result of the humidity sensor at the outlet position exceeds the preset humidity range, the air extraction assembly is closer to the outlet position, so the adjustment of the working parameters of the air extraction assembly has a more intuitive and effective effect on the real-time detection result of the humidity sensor at the outlet position, and the adjustment of the working parameters of the air extraction assembly has a smaller effect on the real-time detection results of the humidity sensors at the inlet position and the inner side of the middle of the box; and by setting the adjustment priority of the air extraction pressure and the air extraction flow to be higher than that of the air extraction time during the adjustment of the air extraction assembly, the air extraction pressure and the air extraction flow have a more direct and rapid effect on the material humidity, and since the time periods for aeration, standing and air extraction of the material in a unit time period are fixed, the adjustment of the air extraction time will inevitably affect the aeration and standing time of the material, so the process and effect of the drying and microbial oxidation of the material are difficult to control, and thus the adjustment priority of the air extraction time is set to be relatively low.

[0056] When the real-time detection results of the humidity sensors at the inlet position and the inside of the middle part of the box exceed the preset humidity range, the controller is set to have a higher adjustment priority for the aeration assembly than for the air extraction assembly. At this time, the material is about to enter or is in the inside of the box, so the adjustment effect of the aeration assembly in the inside of the box has a more intuitive and effective influence on the real-time detection results of the humidity sensors at the inlet position and the inside of the middle part of the box, and the present adjustment process can also provide a stable environment for the drying process of the subsequent entering material. In the adjustment process of the controller for the aeration assembly, the controller has a higher adjustment priority for the aeration flow and the aeration pressure than for the aeration time, and has a higher adjustment priority for the aeration time than for the aeration angle and the aeration sequence. The adjustment of the aeration flow and the aeration pressure has the most direct and effective influence on the aeration effect, so it needs to have the highest adjustment priority. Since the time periods for aeration, standing and air extraction of the material in a unit time period are fixed, the adjustment of the aeration time will inevitably affect the time for the material to stand and be air extracted, so the process and effect of the drying and microbial oxidation of the material are difficult to control, and thus the adjustment priority of the aeration time should not be set to the highest. The adjustment of the aeration angle and the aeration sequence needs to adjust the installation angle of the aeration branch pipe in advance and adjust the opening and closing sequence in the controller, respectively. The adjustment operation amount is large but the influence on the aeration effect is small, so the adjustment priority is set to the lowest.

[0057] As shown in Figure 3 The auxiliary heating device 7 in the present embodiment includes an auxiliary heating belt 71 wrapped on the outer wall and the bottom of the box 1 and a heating wire 72 arranged in the inside of the auxiliary heating belt 71. The heating wire 72 is connected with an external power source, and the controller is signal-connected with the external power source to control the opening and closing and working parameters of the power source.

[0058] As shown in Figure 3 The inside of the box 1 is provided with a plurality of temperature sensors C. The temperature sensors are at least arranged at the inlet position, the outlet position and the inside of the middle part of the box 1 to perform real-time detection on the material temperature at each position. The adjustable parameters of the auxiliary heating device 7 at least include the heating time, the heating speed, the heating power and the heating area.

[0059] The controller controls the auxiliary heating assembly according to the real-time detection results of the temperature sensors as follows:

[0060] When the real-time detection results of the temperature sensors at the inlet position exceed the preset temperature range, the controller has a higher adjustment priority for the heating power and the heating area than for the heating time and the heating speed.

[0061] When the real-time detection result of the temperature sensor at the inside of the middle part 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.

[0062] 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 has a higher priority for adjusting the heating power and the heating area than for adjusting the heating time and the heating speed, since at this time the material is about to enter or has just entered the inside of the box and has not started the drying process, and thus 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, which is more intuitive and effective for adjusting the subsequent material heating effect; and when the real-time detection result of the temperature sensor at the inside of the middle part 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, since at this time the material in the inside of the box has been in the heating process or has just finished the heating and is about to be discharged, and thus under the premise that the heating time is not enough, the adjustment of the heating power and the heating area has no obvious effect on the material heating, and thus the priority for adjusting the heating time and the heating speed needs to be set to be higher to ensure that the material has sufficient and sufficient heating time.

[0063] [Second embodiment]

[0064] The second embodiment of the present application also provides a control method of the biological drying bin with the auxiliary heating device mentioned in the first embodiment, including the following steps:

[0065] S1: The controller controls the auxiliary heating device to start preheating the inside of the box and keeps the auxiliary heating device open in the subsequent steps;

[0066] S2: The material to be dried is sent into the inside of the box from the inlet;

[0067] S3: The controller controls the start of the aeration assembly to aerate the inside of the box, and in this process, the driving motor is started to drive the stirring shaft to rotate and stir the material; taking 1h 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 6-10r / min;

[0068] S4: The controller controls the closing of the aeration assembly, and at the same time, the driving motor is closed to stop the stirring shaft from rotating and stirring the material;

[0069] S5: the controller controls the start of the air extraction assembly to extract air from the inside of the box, and in this process, the driving motor is started to drive the stirring shaft to rotate and stir the material; taking 1h 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 6-10r / min;

[0070] S6: after the sampling detection of the discharge outlet is qualified, the discharge outlet is opened, and the dried material is taken out from the discharge outlet and sent to the subsequent composting position.

[0071] The control method provided in the embodiment mainly reduces the water content of the material and assists the generation of microorganisms in the material. The stirring method is intermittent full-mixing stirring, the stirring frequency is high, the aeration, standing and air extraction are opened in turn, and the stirring is carried out synchronously during the aeration and air extraction, so that the water in the material is quickly removed. The material contacts oxygen during the stirring process and slowly advances from the inlet to the outlet 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℃. The material stays in the drying bin for 22-24h, and the auxiliary heating device is opened for 45-50℃.

[0072] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A biological drying chamber with an auxiliary heating device, comprising a box body (1) and a cover (2) disposed on the top of the box body (1), wherein a drive motor (3) is fixed on one side of the box body (1), the output shaft of the drive motor (3) is connected to a stirring shaft (4) passing through the box body (1), the stirring shaft (4) is rotatably disposed inside the box body (1), and an inlet is provided on the side of the box body (1) away from the drive motor (3), and an outlet is provided on the side of the box body (1) close to the drive motor (3); Its features are: The box (1) is also equipped with an aeration component (5), and the top of the cover (2) is provided with an air extraction port (6) that is connected to the air extraction component. The controller is connected to the aeration component (5) and the air extraction component respectively to control and adjust the opening and closing of the aeration component (5) and the air extraction component and their working parameters. An auxiliary heating device (7) is also provided on the outside of the housing (1). The controller is connected to the auxiliary heating device (7) to control and adjust the opening and closing of the auxiliary heating device (7) and its operating parameters. The aeration assembly (5) includes an aeration main pipe (51), one end of which is connected to the inside of the stirring shaft (4) on the outside of the box. The stirring shaft (4) is a hollow shaft, and a plurality of aeration holes communicating with its interior are evenly opened on the outer wall of the stirring shaft (4). The other end of the aeration main pipe (51) is connected to the aeration branch pipe (52) on the inside of the box. 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 (1). The top of the box (1) is provided with multiple humidity sensors, which are at least located at the inlet, outlet and inner side of the middle of the box (1); the adjustable operating parameters of the aeration component (5) include at least aeration flow rate, aeration pressure, aeration time, aeration angle and aeration sequence; the adjustable operating parameters of the suction component include at least suction flow rate, suction pressure and suction time. The controller performs the following control on the aeration and extraction components 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 prioritizes the adjustment of the air extraction component over the adjustment of the aeration component; and during the adjustment of the air extraction component, the controller prioritizes the adjustment of the air extraction pressure and air extraction flow rate over the adjustment of the air extraction time. When the real-time detection results of the humidity sensors at the feed inlet and the inner side of the middle of the chamber exceed the preset humidity range, the controller prioritizes the adjustment of the aeration components over the adjustment of the suction components. Furthermore, during the adjustment of the aeration components, the controller prioritizes the adjustment of aeration flow rate and aeration pressure over the adjustment of aeration time, and the adjustment of aeration time is prioritized over the adjustment of aeration angle and aeration sequence.

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

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

4. A biological drying chamber with an auxiliary heating device according to claim 1, characterized in that: The auxiliary heating device (7) includes an auxiliary heating cable (71) covering the outer wall and bottom of the box (1) and a heating wire (72) disposed inside the auxiliary heating cable (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 operating parameters.

5. A biological drying chamber with an auxiliary heating device according to claim 4, characterized in that: The box (1) is equipped with multiple temperature sensors (C), which are located at least at the inlet, outlet and 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.

6. A biological drying chamber with an auxiliary heating device according to claim 5, characterized in that: The controller performs the following control on the auxiliary heating component based on the real-time detection results of the temperature sensor: When the real-time detection result of the temperature sensor at the feed inlet exceeds the preset temperature range, the controller prioritizes adjusting the heating power and heating area over adjusting 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 chamber exceeds the preset temperature range, the controller prioritizes adjusting the heating time and heating speed over adjusting the heating power and heating area.

7. A control method for a biological drying chamber with an auxiliary heating device according to any one of claims 1-6, characterized in that: Includes the following steps: S1: The controller activates the auxiliary heating device to preheat the internal environment of the chamber and keeps the auxiliary heating device on in subsequent steps. S2: The material to be dried is fed into the chamber through the inlet; S3: The controller starts the aeration components to aerate the inside of the chamber. During this process, the drive motor is started to drive the stirring shaft to rotate and stir the material. S4: The controller shuts down the aeration components and simultaneously turns off the drive motor to stop the mixing shaft from rotating and mixing the material. S5: The controller controls the start of the air extraction component to extract air from the inside of the chamber. During this process, the drive motor is started to drive the stirring shaft to rotate and stir the material. S6: After the sampling inspection of the discharge port is qualified, open the discharge port and take out the dried material from the discharge port and send it to the subsequent composting location.

Images