Garbage storage and fermentation device with conveying and preheating functions

Abstract

The present application relates to garbage storage fermentation technical field, specifically to a kind of garbage storage fermentation device with conveying preheating function, garbage is output by conveying device, preheating cavity built-in shell is used to and heat source communication, by heating to preheating cavity, the garbage conveyed is preheated, after preheating is completed, it is sent into the fermentation cavity of fermentation tower and is stored and fermented, heat generated during fermentation is collected, and acts as heat source, reduces energy consumption, by power device, the garbage fermented is pressurized, and water generated by fermentation is discharged, avoid subsequent combustion process, reduce calorific value, after fermentation is completed, by discharging device, garbage is discharged from fermentation cavity, by the water generated is mixed other liquid medium and sent into preheating cavity, improve energy utilization.

Description

Technical Field

[0001] This invention relates to the field of waste storage and fermentation technology, specifically to a waste storage and fermentation device with conveying and preheating functions. Background Technology

[0002] In recent years, with the adjustment of national industrial policies related to waste treatment, waste incineration power generation has become one of the main methods of municipal solid waste treatment.

[0003] For current incineration processes, pre-fermentation is required before waste incineration. However, in low-temperature environments, waste fermentation is prone to be incomplete, and the organic matter in the waste may not be fully converted into more stable compounds, thus affecting the calorific value of the waste.

[0004] Furthermore, the fermentation process may increase the moisture content of the waste, and given the diverse nature of household waste, conventional methods are insufficient to remove the moisture. Since moisture cannot burn during subsequent incineration, excessively high moisture content in the waste can lower its overall calorific value and negatively impact the quality of incineration. Summary of the Invention

[0005] The purpose of this invention is to provide a waste storage and fermentation device with conveying and preheating functions to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a waste storage and fermentation device with conveying and preheating function.

[0007] A waste storage and fermentation device with conveying and preheating functions is disclosed. The storage and fermentation device includes a fermentation tower, a power unit, a discharge device, and a conveying device. The conveying device and the fermentation tower are connected by a pipeline. The power unit is connected to the fermentation tower. The discharge device and the fermentation tower are movably connected. The discharge device and the power unit are connected by a transmission. The conveying device includes a shell with a preheating chamber on it. The preheating chamber is connected to a heat source. The fermentation tower has a fermentation chamber with the inlet located on the lower side wall.

[0008] Waste is output via a conveying device. The preheating chamber built into the shell is connected to a heat source. By supplying heat to the preheating chamber, the conveyed waste is preheated. After preheating, it is sent to the fermentation chamber of the fermentation tower for storage and fermentation. During fermentation, the heat generated is collected and used as a heat source to reduce energy consumption. The fermenting waste is pressurized by a power unit, and the water produced during fermentation is discharged to avoid reducing the calorific value during subsequent combustion. After fermentation, the waste is discharged from the fermentation chamber through a discharge device. By mixing the generated water with other liquid media and sending it into the preheating chamber, the energy utilization rate is improved.

[0009] Furthermore, the conveying device also includes an auger and a conveying motor. The conveying motor is fastened to the housing, and the output end of the conveying motor is fastened to the auger. The housing is provided with a material conveying trough, the auger is placed in the material conveying trough, the preheating chamber is arranged along the outer layer of the material conveying trough, and the material conveying trough and the fermentation chamber are connected by pipes.

[0010] The power unit includes a drive motor and a drive shaft. The drive motor is fastened to the fermentation tower. The output end of the drive motor is connected to the drive shaft. The drive shaft is placed inside the fermentation chamber. The outer ring of the drive shaft is provided with blades arranged in a spiral shape. The drive shaft is provided with a drive cavity. The drive cavity is provided with several guide grooves in its circumference. Several transmission components are built into the drive cavity. One end of each transmission component passes through the guide groove and is connected to the blades in a transmission manner.

[0011] The conveying device serves as the main power source, providing torque through a conveying motor to drive the auger to rotate on a fixed axis within the conveying trough. The auger is designed without a solid shaft, facilitating waste conveying. During conveying, the waste is preheated in the preheating chamber on the outer layer of the conveying trough, reducing the storage time of the waste in the fermentation chamber and improving the waste fermentation efficiency. The drive motor is fixed on the fermentation tower, with its output end inserted into the fermentation chamber to drive the drive shaft to rotate. A blade is fitted on the drive shaft, and during the rotation of the blade, the fermented waste is discharged upwards and discharged from the fermentation chamber through a discharge device. During the discharge process, the preheated waste is continuously fed into the fermentation chamber through the auger, improving continuous processing efficiency. The blades and drive shaft adopt a separate design. The pitch is adjusted through the transmission component. The blades are made of elastic metal sheets, which allow deformation under force and can recover deformation after the force is removed. When the control pitch decreases, the vertical distance between the start and end points within the same pitch decreases. Since the inner ring length remains unchanged, the distance between the blades connected to the transmission component and the drive shaft remains unchanged locally, while the gap between the blades and the drive shaft increases elsewhere, creating a drainage gap. The drainage gap is controlled according to the fermentation time to automatically collect the water generated by fermentation. This water is hot water generated by fermentation heat. Automatic discharge can ensure its own calorific value and can also be used for pre-conveying to preheat the waste.

[0012] Furthermore, the transmission assembly includes an adjusting cylinder, a base is provided on the lower side of the adjusting cylinder, a slot is provided on the base, the output end of the adjusting cylinder is inserted into the slot at the upper end, a linkage rod extends outward from the base, the end of the linkage rod away from the base passes through the guide groove and is fastened to the blade, the lowest base is fastened to the wall of the drive cavity, and the remaining bases are movably connected to the drive cavity.

[0013] In the initial state: the inner circle of the blade is in contact with the outer circle of the drive shaft, and the output end of the regulating cylinder is located in the middle section of the slot.

[0014] The blades are partially fixed via a linkage rod on the outside of the base using an adjusting cylinder. The fixing points are one linkage rod at each end of each pitch length. A slot is provided on the base, and the output end of the lower adjusting cylinder is inserted into the upper slot. The output end of the adjusting cylinder is T-shaped and can slide within the slot. Adjacent adjusting cylinders are connected by the base. The bottom of the base is fixed to the drive chamber. Based on the blade pitch, each pitch length is divided into a fermentation layer. A humidity sensor can be installed on the drive shaft for each fermentation layer to detect the degree of local fermentation. As fermentation progresses, moisture gradually separates. Because the accumulated waste is irregular, moisture does not easily escape. The linkage rod contracts, squeezing the fermentation layer with excessive moisture, improving water removal efficiency. Simultaneously, a drainage gap is created, allowing water to flow downwards along the drive shaft wall for automatic collection.

[0015] Furthermore, the blades are arranged with an inclined vertical cross-section, and the inner circle of the blades is located at the lower end.

[0016] By tilting the blades, with the outer circle higher and the inner circle lower, the water generated during fermentation flows downwards at an angle under the influence of gravity, making it easier for it to automatically converge near the drive shaft, thus effectively draining the water from the waste.

[0017] Furthermore, the discharge device includes a sleeve and a discharge pipe. The sleeve is stepped, with a through groove in the middle and a transmission groove on the sleeve. The transmission groove is set along the lower end of the through groove. The upper end of the blade is inserted into the transmission groove, and the blade is connected to the sleeve through the transmission groove. The sleeve and the upper end of the fermentation chamber are slidably connected. A discharge port is provided on one side of the fermentation chamber, and a drain port is provided on the sleeve. One end of the discharge pipe is connected to the drain port, and the other end passes through the discharge port.

[0018] The discharge pipe is fixed by a sleeve, and the upper end of the paddle is engaged in the transmission groove of the sleeve. When the pitch of the paddle is adjusted, the overall length of the paddle decreases. Through the transmission groove, the sleeve is moved downward. The transmission groove is annular, so that only vertical displacement is transmitted between the paddle and the sleeve during the transmission process, not torque, thus avoiding rotation of the discharge pipe and causing motion interference. After fermentation is completed, the drive motor drives the drive shaft to rotate, which causes the paddle to spirally push the waste into the through groove of the sleeve, and then enter the discharge pipe through the drain port, from which it is automatically discharged.

[0019] Furthermore, a liquid collection chamber is provided at the bottom of the fermentation chamber, and the discharge device also includes a circulation pump. The inlet of the circulation pump is connected to the pipe of the liquid collection chamber, and the outlet of the circulation pump is connected to the pipe of the preheating chamber.

[0020] When the drainage gap is generated, the fermented and heated water flows downward along the drive shaft and eventually falls into the collection chamber at the lower end. It is automatically collected through the collection chamber. After collection, it is directly pumped into the preheating chamber by the circulation pump. The preheating chamber and the conveying trough are connected by a good thermal conductor, such as copper, to facilitate the preheating of the waste entering the conveying trough and improve the efficiency of subsequent fermentation.

[0021] As an optimization, the power unit also includes a sealing plate. The sealing plate is arc-shaped, and its curvature matches that of the drive cavity wall. The sealing plate is fitted onto the base, and the base contacts the drive cavity wall through the sealing plate. The sealing plate is fixed to the base, and a linkage rod is connected to one end of the base through the sealing plate. The arc-shaped sealing plate seals the inside of the guide groove, preventing the water generated during fermentation from flowing into the drive cavity through the guide groove and affecting the preheating efficiency.

[0022] As an optimization, the guide groove is a spiral groove. By setting the guide groove to be spiral, with the spiral direction being the same as the blade direction, when the pitch decreases, the beginning and end of the original fermentation layer no longer form a complete pitch in space, and the whole shows an expansion trend, that is, the drainage gap increases, thereby improving the collection efficiency of fermentation water.

[0023] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: A blade is fitted onto the drive shaft of the present invention. During the rotation of the blade, the fermented waste can be discharged upwards and discharged from the fermentation chamber through a discharge device. During the discharge process, the preheated waste is continuously fed into the fermentation chamber through an auger, improving continuous processing efficiency. The blade and drive shaft adopt a separate design, and the pitch is adjusted through a transmission component. The blade uses an elastic metal sheet, allowing deformation under force. When the force is removed, the deformation can be restored. When the control pitch decreases, the vertical distance between the start and end points within the same pitch decreases. Since the inner ring length remains unchanged, the distance between the blade and the drive shaft in some areas connected to the transmission component remains unchanged, while the gap between other areas and the drive shaft increases, generating discharge... The liquid gap is controlled according to the fermentation time, automatically collecting the water generated during fermentation. This water is hot water produced by fermentation heat generation; automatic discharge ensures its calorific value and allows for pre-conveying to preheat the waste. Based on the paddle pitch, each pitch length is divided into a fermentation layer. Each fermentation layer can be equipped with a humidity sensor on the drive shaft to detect the local fermentation degree. As fermentation progresses, moisture gradually separates. Due to the irregular shape of the accumulated waste, moisture does not easily detach from the waste. The linkage rod contracts, squeezing the fermentation layer with excessive moisture, improving water removal efficiency. Simultaneously, a liquid drainage gap is created, allowing water to flow downwards along the drive shaft wall for automatic collection. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the waste conveying structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the propeller adjustment power transmission of the present invention;

[0028] Figure 4 yes Figure 3 A magnified view of a portion of the view;

[0029] Figure 5 This is a schematic diagram of the waste stratified fermentation of the present invention;

[0030] Figure 6 yes Figure 3 A partial zoom-in view (B) of the view;

[0031] Figure 7 This is a schematic diagram of the waste fermentation water circulation of the present invention;

[0032] In the diagram: 1. Fermentation tower; 11. Fermentation chamber; 12. Discharge port; 13. Liquid collection chamber; 2. Power unit; 21. Drive motor; 22. Drive shaft; 221. Guide groove; 222. Drive chamber; 23. Paddle; 24. Transmission assembly; 241. Adjusting cylinder; 242. Linkage rod; 243. Base; 2431. Slot; 25. Sealing plate; 3. Discharge device; 31. Sleeve; 311. Transmission groove; 312. Drain port; 32. Discharge pipe; 33. Circulating pump; 4. Conveying device; 41. Shell; 411. Conveying trough; 412. Preheating chamber; 42. Screwdriver; 43. Conveying motor. Detailed Implementation

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] Please see Figure 1-7 The present invention provides the following technical solution:

[0035] A waste storage and fermentation device with conveying and preheating functions is provided. The storage and fermentation device includes a fermentation tower 1, a power unit 2, a discharge device 3, and a conveying device 4. The conveying device 4 is connected to the fermentation tower 1 by a pipeline. The power unit 2 is connected to the fermentation tower 1. The discharge device 3 is movably connected to the fermentation tower 1 and is drivenly connected to the power unit 2. The conveying device 4 includes a shell 41. A preheating chamber 412 is provided on the shell 41 and is connected to a heat source. A fermentation chamber 11 is provided on the fermentation tower 1. The inlet of the fermentation chamber 11 is located on the lower side wall.

[0036] Waste is output through conveying device 4. The preheating chamber 412 built into the shell 41 is used to connect with a heat source. By supplying heat to the preheating chamber 412, the conveyed waste is preheated. After preheating, it is sent to the fermentation chamber 11 of the fermentation tower 1 for storage and fermentation. During the fermentation process, the heat generated is collected and used as a heat source to reduce energy consumption. The fermented waste is pressurized by power device 2 to discharge the water generated during fermentation, thus avoiding a decrease in calorific value during subsequent combustion. After fermentation, the waste is discharged from the fermentation chamber 11 through discharge device 3. By mixing the generated water with other liquid media and sending it into the preheating chamber 412, the energy utilization rate is improved.

[0037] Furthermore, the conveying device 4 also includes an auger 42 and a conveying motor 43. The conveying motor 43 is fastened to the housing 41. The output end of the conveying motor 43 is fastened to the auger 42. The housing 41 is provided with a material conveying trough 411. The auger 42 is placed in the material conveying trough 411. The preheating chamber 412 is arranged along the outer layer of the material conveying trough 411. The material conveying trough 411 and the fermentation chamber 11 are connected by pipes.

[0038] The power unit 2 includes a drive motor 21 and a drive shaft 22. The drive motor 21 is fastened to the fermentation tower 1. The output end of the drive motor 21 is connected to the drive shaft 22. The drive shaft 22 is placed inside the fermentation chamber 11. The outer ring of the drive shaft 22 is provided with blades 23, which are arranged in a spiral shape. The drive shaft 22 is provided with a drive cavity 222. The drive cavity 222 is provided with several guide grooves 221 around its circumference. Several transmission components 24 are built into the drive cavity 222. One end of each transmission component 24 passes through the guide groove 221 and is connected to the blades 23.

[0039] The conveying device 4 serves as the main power source, providing torque through the conveying motor 43 to drive the auger 42 to rotate on a fixed axis within the conveying trough 411. The auger 42 is designed without a solid shaft, facilitating waste conveying. During conveying, the waste is preheated in the preheating chamber 412 on the outer layer of the conveying trough 411, reducing the storage time of the waste in the fermentation chamber 11 and improving the waste fermentation efficiency. The drive motor 21 is fixed on the fermentation tower 1, with its output end inserted into the fermentation chamber 11, driving the drive shaft 22 to rotate. A blade 23 is fitted onto the drive shaft 22. During the rotation of the blade 23, the fermented waste is discharged upwards and exited from the fermentation chamber through the discharge device 3. During the discharge process, the preheated waste is continuously fed into the fermentation chamber 11 through the auger 42. To improve continuous processing efficiency, the blade 23 and drive shaft 22 adopt a split design. The pitch is adjusted through the transmission component 24. The blade 23 uses an elastic metal sheet, which allows deformation under force and can recover its deformation after the force is removed. When the control pitch decreases, the vertical distance between the start and end points within the same pitch decreases. Since the inner ring length remains unchanged, the distance between the blade 23 connected to the transmission component 24 and the drive shaft 22 remains unchanged locally, while the gap between the blade 23 and the drive shaft 22 increases elsewhere, generating a drainage gap. The drainage gap is controlled according to the fermentation time to automatically collect the water generated by fermentation. This water is hot water generated by fermentation heat. Automatic discharge can ensure its own calorific value and can also be used for pre-conveying to preheat the waste.

[0040] Furthermore, the transmission assembly 24 includes an adjusting cylinder 241, a base 243 is provided on the lower side of the adjusting cylinder 241, a slot 2431 is provided on the base 243, the output end of the adjusting cylinder 241 is inserted into the slot 2431 at the upper end, a linkage rod 242 extends outward from the base 243, the end of the linkage rod 242 away from the base 243 passes through the guide groove 221 and is fastened to the blade 23, the lowest base 243 is fastened to the wall of the drive cavity 222, and the other bases 243 are movably connected to the drive cavity 222;

[0041] In the initial state: the inner circle of the blade 23 is in contact with the outer circle of the drive shaft 22, and the output end of the regulating cylinder 241 is located in the middle section of the slot 2431.

[0042] The blade 23 is partially fixed by the adjusting cylinder 241 via the linkage rod 242 on the outside of the base 243. The fixing points are one linkage rod 242 at each end of each pitch length. A slot 2431 is provided on the base 243. The output end of the lower adjusting cylinder 241 is inserted into the upper slot 2431. The output end of the adjusting cylinder 241 is T-shaped and can slide within the slot 2431. Adjacent adjusting cylinders 241 are maintained in transmission via the base 243. The bottommost base 243 is fixed to the drive cavity 222. Based on the pitch of the blade 23, each pitch length is divided into a fermentation layer. A humidity sensor can be installed on the drive shaft 22 for each fermentation layer to detect the local fermentation degree. As fermentation proceeds, water gradually separates out. Since the piled-up garbage is an irregular body, it is not easy for water to separate from the garbage. By contracting the linkage rod 242, the fermentation layer with excessive water is squeezed to improve the water separation efficiency. At the same time, a drainage gap is generated, and the water flows downward along the wall of the drive shaft 22 for easy automatic collection.

[0043] Furthermore, the blade 23 has an inclined vertical section, with the inner circle of the blade 23 located at the lower end.

[0044] With the blades 23 tilted, with the outer circle higher and the inner circle lower, the water generated during fermentation flows downwards under the influence of gravity, making it easier for the water to automatically converge near the drive shaft 22, thus effectively draining the water from the waste.

[0045] Furthermore, the discharge device 3 includes a sleeve 31 and a discharge pipe 32. The sleeve 31 is stepped and has a through groove in the middle. A transmission groove 311 is provided on the sleeve 31. The transmission groove 311 is provided along the lower end of the through groove. The upper end of the blade 23 is inserted into the transmission groove 311. The blade 23 is connected to the sleeve 31 through the transmission groove 311. The upper end of the sleeve 31 is slidably connected to the fermentation chamber 11. A discharge port 12 is provided on one side of the fermentation chamber 11. A drain port 312 is provided on the sleeve 31. One end of the discharge pipe 32 is connected to the drain port 312, and the other end passes through the discharge port 12.

[0046] The discharge pipe 32 is fixed by a sleeve 31. The upper end of the blade 23 is engaged in the transmission groove 311 of the sleeve 31. When the pitch of the blade 23 is adjusted, its overall length decreases. Through the transmission groove 311, the sleeve 31 is moved downward. The transmission groove 311 is an annular groove, so that during the transmission process between the blade 23 and the sleeve 31, only vertical displacement is transmitted, not torque, thus avoiding rotation of the discharge pipe 32 and causing motion interference. After fermentation is completed, the drive motor 21 drives the drive shaft 22 to rotate, thereby causing the blade 23 to spirally push the waste into the through groove of the sleeve 31, and then enter the discharge pipe 32 through the drain port 312, from which it is automatically discharged.

[0047] Furthermore, the fermentation chamber 11 is provided with a liquid collection chamber 13 at the bottom, and the discharge device 3 also includes a circulation pump 33. The inlet of the circulation pump 33 is connected to the liquid collection chamber 13, and the outlet of the circulation pump 33 is connected to the preheating chamber 412.

[0048] When the drainage gap is generated, the fermentation-heated water flows downward along the drive shaft 22 and eventually falls into the lower liquid collection chamber 13, where it is automatically collected. After collection, it is directly pumped into the preheating chamber 412 by the circulation pump 33. The preheating chamber 412 and the conveying trough 411 are connected by a good thermal conductor, such as copper, to facilitate the preheating of the waste entering the conveying trough 411 and improve the subsequent fermentation efficiency.

[0049] As an optimization, the power unit 2 also includes a sealing plate 25. The sealing plate 25 is arc-shaped, and its curvature matches the curvature of the drive cavity 222 wall. The sealing plate 25 is fitted onto the base 243, and the base 243 contacts the drive cavity 222 wall through the sealing plate 25. The sealing plate 25 is fixed to the base 243, and one end of the base 243 passes through the sealing plate 25 and is connected to the linkage rod 242. The arc-shaped sealing plate 25 seals the inside of the guide groove 221, preventing the water generated during fermentation from flowing into the drive cavity 222 through the guide groove 221 and affecting the preheating efficiency.

[0050] As an optimization, the guide groove 221 is a spiral groove. By setting the guide groove 221 in a spiral configuration, with the spiral direction being the same as that of the blade 23, when the pitch decreases, the beginning and end of the original fermentation layer no longer form a complete pitch in space, and the whole structure shows an expanding trend, that is, the liquid discharge gap increases, thereby improving the efficiency of fermentation water collection.

[0051] The working principle of this invention: A blade 23 is sleeved on the drive shaft 22. During the rotation of the blade 23, the fermented waste can be discharged upwards and discharged from the fermentation chamber through the discharge device 3. During the discharge process, the preheated waste is continuously fed into the fermentation chamber 11 through the auger 42, improving the continuous processing efficiency. The blade 23 and the drive shaft 22 adopt a split design, and the pitch is adjusted by the transmission component 24. The blade 23 is made of elastic metal sheet, which allows deformation under force. When the force is removed, it can recover its deformation. When the control pitch decreases, the vertical distance between the start and end points within the same pitch decreases. Since the inner circle length remains unchanged, the distance between the blade 23 connected to the transmission component 24 and the drive shaft 22 remains unchanged locally, while the gap between the blade 23 and the drive shaft 22 increases in other places, generating... The drainage gap is controlled according to the fermentation time, automatically collecting the water generated during fermentation. This water is hot water produced by fermentation heat generation; automatic discharge ensures its calorific value and allows for pre-conveying to preheat the waste. Based on the paddle 23 pitch, each pitch length is divided into a fermentation layer. Each fermentation layer can be equipped with a humidity sensor on the drive shaft 22 to detect the local fermentation degree. As fermentation progresses, moisture gradually separates. Due to the irregular shape of the accumulated waste, moisture does not easily escape from the waste. The linkage 242 contracts, squeezing the fermentation layer with excessive moisture, improving water removal efficiency. Simultaneously, a drainage gap is created, allowing water to flow downwards along the wall of the drive shaft 22 for automatic collection.

[0052] Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A waste storage and fermentation device with conveying and preheating functions, characterized in that: The storage and fermentation device includes a fermentation tower (1), a power unit (2), a discharge device (3), and a conveying device (4). The conveying device (4) is connected to the fermentation tower (1) by a pipeline. The power unit (2) is connected to the fermentation tower (1). The discharge device (3) is movably connected to the fermentation tower (1). The discharge device (3) is connected to the power unit (2) by a transmission. The conveying device (4) includes a shell (41). A preheating chamber (412) is provided on the shell (41). The preheating chamber (412) is connected to a heat source. A fermentation chamber (11) is provided on the fermentation tower (1). The inlet of the fermentation chamber (11) is located on the lower side wall. The conveying device (4) also includes an auger (42) and a conveying motor (43). The conveying motor (43) is fastened to the housing (41). The output end of the conveying motor (43) is fastened to the auger (42). The housing (41) is provided with a conveying trough (411). The auger (42) is placed inside the conveying trough (411). The preheating chamber (412) is arranged along the outer layer of the conveying trough (411). The conveying trough (411) and the fermentation chamber (11) are connected by a pipe. The power unit (2) includes a drive motor (21) and a drive shaft (22). The drive motor (21) is fastened to the fermentation tower (1). The output end of the drive motor (21) is connected to the drive shaft (22) in a transmission connection. The drive shaft (22) is placed inside the fermentation chamber (11). The outer ring of the drive shaft (22) is provided with blades (23). The blades (23) are arranged in a spiral shape. The drive shaft (22) is provided with a drive cavity (222). The drive cavity (222) is provided with several guide grooves (221) in a circumferential direction. The drive cavity (222) is built with several transmission components (24). One end of the several transmission components (24) passes through the guide grooves (221) and is connected to the blades (23) in a transmission connection. The transmission assembly (24) includes an adjusting cylinder (241), a base (243) is provided on the lower side of the adjusting cylinder (241), a slot (2431) is provided on the base (243), the output end of the adjusting cylinder (241) is inserted into the slot (2431) at the upper end, a linkage rod (242) extends outward from the base (243), the end of the linkage rod (242) away from the base (243) passes through the guide groove (221) and is fastened to the blade (23), the bottommost base (243) is fastened to the wall of the drive cavity (222), and the remaining bases (243) are movably connected to the drive cavity (222); In the initial state: the inner circle of the blade (23) is in contact with the outer circle of the drive shaft (22), and the output end of the regulating cylinder (241) is located in the middle section of the slot (2431); The blade (23) and drive shaft (22) are designed separately. The pitch is adjusted by the transmission assembly (24). The blade (23) is made of elastic metal sheet, which allows deformation under force. When the force is removed, the deformation can be restored. When the control pitch is reduced, the vertical distance between the start and end points within the same pitch is reduced. Since the inner ring length remains unchanged, the blade (23) connected to the transmission assembly (24) locally maintains the distance between the blade (23) and the drive shaft (22) unchanged, while the gap between the blade (23) and the drive shaft (22) in other places increases, generating a discharge gap.

2. The waste storage and fermentation device with conveying and preheating function according to claim 1, characterized in that: The blade (23) has an inclined vertical section, and the inner circle of the blade (23) is located at the lower end.

3. A waste storage and fermentation device with conveying and preheating function according to claim 2, characterized in that: The discharge device (3) includes a sleeve (31) and a discharge pipe (32). The sleeve (31) is stepped and has a through groove in the middle. A transmission groove (311) is provided on the sleeve (31). The transmission groove (311) is provided along the lower end of the through groove. The upper end of the blade (23) is inserted into the transmission groove (311). The blade (23) is connected to the sleeve (31) through the transmission groove (311). The upper end of the sleeve (31) is slidably connected to the fermentation chamber (11). A discharge port (12) is provided on one side of the fermentation chamber (11). A drain port (312) is provided on the sleeve (31). One end of the discharge pipe (32) is connected to the drain port (312), and the other end passes through the discharge port (12).

4. A waste storage and fermentation device with conveying and preheating function according to claim 3, characterized in that: The fermentation chamber (11) has a liquid collection chamber (13) at the bottom. The discharge device (3) also includes a circulation pump (33). The inlet of the circulation pump (33) is connected to the liquid collection chamber (13) and the outlet of the circulation pump (33) is connected to the preheating chamber (412).

5. A waste storage and fermentation device with conveying and preheating function according to claim 2, characterized in that: The power unit (2) also includes a sealing plate (25), which is arc-shaped and whose curvature matches the curvature of the drive cavity (222) wall. The sealing plate (25) is fitted on the base (243), and the base (243) contacts the drive cavity (222) wall through the sealing plate (25).

6. A waste storage and fermentation device with conveying and preheating function according to claim 1, characterized in that: The guide groove (221) is a spiral groove.

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