Agricultural waste recycling process and apparatus

Abstract

The present application belongs to the field of agricultural waste recycling, and particularly relates to an agricultural waste recycling process and device, which comprises a fermentation tank and a heat exchange water tank. The fermentation tank comprises a tank body, a heat preservation shell, a rotating column, a stirring rod and a motor. The two ends of the stirring rod are connected to the heat exchange water tank, and the heat preservation cavity is connected to the heat exchange water tank. The heat exchange water tank is provided with a heat exchange device, a heat exchange medium and a heating device. The heat exchange medium is divided into the heat preservation cavity and the stirring rod to form a temperature adjusting function. The heat exchange device is connected to a dryer to exchange the waste gas heat generated by the dryer into the heat exchange medium. Compared with the prior art, the present application forms heat radiation from outside to inside and from inside to outside through the design of two heat sources, so that the raw materials can be rapidly heated to the optimal fermentation temperature. Through the circulation of the heat exchange medium, a constant temperature state can be formed in the tank body, so that the raw materials are always at a suitable fermentation temperature, which is beneficial to the normal progress of the fermentation process.

Description

Technical Field

[0001] This invention belongs to the field of agricultural waste recycling, and specifically relates to an agricultural waste recycling process and apparatus. Background Technology

[0002] Agricultural waste can be transformed into organic fertilizer through bio-fermentation technology. These wastes are rich in organic matter and nutrients, and after scientific processing, they can be made into efficient and environmentally friendly organic fertilizers that provide nutrients to farmland, improve soil structure, and increase crop yield and quality. Agricultural waste can also be used in feed production, papermaking, and biodegradable materials. Through scientific processing, useful components can be extracted for use in the production of feed additives, paper raw materials, and biodegradable plastics, thus achieving the resource utilization of waste.

[0003] For example, when agricultural waste such as corn, fruits and vegetables are recycled to make feed, a fermentation process is required. Fermentation is usually carried out in a fermentation tank and the fermentation temperature needs to be controlled. In the existing technology, heating devices are often used on the outside or inside of the fermentation tank to assist in heating. However, this heating method is usually from the inside to the outside or from the outside to the inside, which is a single heat source radiation method. Its heat radiation efficiency is low and it is easy to cause uneven heating of the raw materials inside and outside, which affects the product quality. Summary of the Invention

[0004] The purpose of this invention is to provide a process and apparatus for recycling agricultural waste, in order to solve the problems existing in the prior art. To achieve the above-mentioned objective, the technical solution adopted by this invention is as follows:

[0005] A recycling process for agricultural waste includes the following steps:

[0006] The first step is to crush and saccharify the raw materials, and then ferment them;

[0007] The second step is to dehydrate and dry the fermented product to form feed.

[0008] Fermentation is carried out in a fermentation tank, which can be stirred and the temperature can be adjusted, and the heat source comes from a dryer.

[0009] An agricultural waste recycling device includes a fermentation tank and a hot water exchange tank, wherein the fermentation tank includes a tank body, an insulated outer shell, a rotating column, a stirring rod, and a motor;

[0010] The tank is used to put raw materials for fermentation. The heat-insulating shell is fitted onto the tank, and a heat-insulating cavity is formed between the heat-insulating shell and the tank. The rotating column is rotatably installed in the fermentation tank. The rotating column is connected to the motor for driving its rotation. The rotating column has a hollow structure. Multiple stirring rods are fixedly connected to the outer side of the rotating column. Blind holes communicating with the interior of the rotating column are provided in the stirring rods.

[0011] The two ends of the stirring rod are connected to the hot water exchange tank, and the heat insulation cavity is connected to the hot water exchange tank. The hot water exchange tank is equipped with a heat exchange device, a heat exchange medium, and a heating device. The heat exchange medium is diverted to the heat insulation cavity and the stirring rod to form a temperature regulation function. The heat exchange device is connected to the dryer and is used to exchange the heat of the exhaust gas generated by the dryer into the heat exchange medium.

[0012] Furthermore, the top of the tank is fixedly connected to an upper top plate, and its bottom is fixedly connected to a lower bottom plate. The top of the rotating column is rotatably connected to the upper top plate, and the bottom of the rotating column is rotatably connected to the lower bottom plate.

[0013] The top of the rotating column is rotatably connected to an upper connecting pipe, and the bottom of the rotating column is rotatably connected to a lower connecting pipe. The upper connecting pipe and the lower connecting pipe are respectively connected to the hot water exchange tank.

[0014] Furthermore, the upper connecting pipe is connected to the first upper branch pipe, the heat insulation cavity is connected to the second upper branch pipe, the first upper branch pipe and the second upper branch pipe are arranged in parallel and connected to the output pipe; the lower connecting pipe is connected to the first lower branch pipe, the heat insulation cavity is connected to the second lower branch pipe, the first lower branch pipe and the second lower branch pipe are arranged in parallel and connected to the return water pipe;

[0015] Both the output pipe and the return pipe are connected to the hot water exchange tank. An output pump is installed on the output pipe, and a return pump is installed on the return pipe. The heat exchange medium in the hot water exchange tank is diverted to the first upper branch pipe and the second upper branch pipe through the output pipe. The heat exchange medium in the rotating column and the heat insulation shell flows back to the return pipe through the first lower branch pipe and the second lower branch pipe, and then enters the hot water exchange tank.

[0016] Furthermore, a clean water input pipe is connected in parallel to the first upper branch pipe via a first three-way valve, and a wastewater output pipe is connected in parallel to the first lower branch pipe via a second three-way valve. The clean water input pipe is used to input clean water into the rotating column for cleaning and unblocking, and the wastewater output pipe is used to output the cleaned wastewater.

[0017] Furthermore, the rotating column has multiple water filter holes on its side, and a sealing plate is provided between two adjacent water filter holes in the circumferential direction of the rotating column. The sealing plate is attached to the inner side of the rotating column, and multiple limiting blocks are fixedly connected to the inner side of the rotating column. The sealing plate is located between two adjacent limiting blocks in the circumferential direction of the rotating column, and the water filter holes are located between two adjacent limiting blocks.

[0018] The top of the plurality of sealing plates is connected to the motor for driving the plurality of sealing plates to rotate around the axis of the rotating column. When the sealing plate abuts against one of the limiting blocks, the filter hole is sealed by the sealing plate. When the sealing plate abuts against another of the limiting blocks, the filter hole is opened.

[0019] When the filter holes are opened, the fermentation wastewater generated in the raw materials enters the rotating column and is output through the wastewater output pipe, while the clean water input pipe inputs clean water to clean the rotating column.

[0020] When the filter holes are sealed by the sealing plates, the motor drives multiple sealing plates to rotate continuously, and the rotating column is continuously rotated by the limiting block to stir the raw materials, and the heat exchange medium enters the rotating column.

[0021] Furthermore, an upper bushing is fixedly connected to the top of the plurality of sealing plates, the upper bushing is rotatably connected to the upper top plate, the upper bushing is rotatably sleeved on the upper connecting pipe, the upper bushing is connected to the motor, the motor is fixedly connected to the upper top plate by a bracket, and the bracket is fixedly connected to the upper connecting pipe by a connector.

[0022] The bottom of the plurality of sealing plates is fixedly connected to a lower bushing, the lower bushing is rotatably connected to the lower base plate, the lower bushing is rotatably sleeved on the lower connecting pipe, and the lower connecting pipe is detachably connected to the lower base plate.

[0023] Furthermore, the hot water exchange tank includes a tank body, a lifting plate, and a fixing rod. The lifting plate is slidably installed inside the tank body, and the fixing rod is connected to the lifting plate. The top of the fixing rod slidably extends out of the tank body, and a nut threadedly connected to the fixing rod is provided on the top of the tank body to support the lifting plate.

[0024] The lifting plate divides the interior of the box into an upper chamber and a lower chamber. Both the upper chamber and the lower chamber are equipped with heat exchange medium. The heat exchange device is located in the upper chamber. The output pipe and the return water pipe are connected to the box through flange pipes. The heating device is located at the bottom of the lower chamber. The lifting plate is equipped with a switch valve connecting the upper and lower chambers.

[0025] When the lifting plate rises above the flange pipe, the heating device heats the heat exchange medium in the lower chamber, and the switching valve opens periodically, allowing the heat exchange medium heated by the heat exchange device in the upper chamber to enter the lower chamber. The temperature of the heat exchange medium in the lower chamber is greater than the temperature of the heat exchange medium in the upper chamber.

[0026] When the lifting plate descends below the flange pipe, the output pipe and the return water pipe connect to the upper chamber, the heating device is turned off, and the heat exchange medium is heated only through the heat exchange device.

[0027] Furthermore, a sealing ring is fitted onto the outer surface of the lifting plate, and multiple fixing rods are provided. The lower side of the fixing rod is rotatably connected to a limiting sleeve, and the limiting sleeve is rotatably connected to one end of a diagonal rod. The other end of the diagonal rod is rotatably connected to an arc-shaped pressure plate, which abuts against the inner side of the upper end of the sealing ring. The diagonal rod is provided with a waist-shaped hole, and a limiting pin is provided in the waist-shaped hole. The limiting pin is fixedly connected to the top of the limiting rod, and the bottom of the limiting rod is fixedly connected to the lifting plate. The lower end of the fixing rod is threadedly connected to the lifting plate. The fixing rod is used to rotate so that the diagonal rod pushes the arc-shaped pressure plate to squeeze the sealing ring. Multiple arc-shaped pressure plates are coaxially distributed and fit against the inner side of the sealing ring.

[0028] Furthermore, the heat exchange device is a heat exchange spiral tube, which is connected to the exhaust gas discharge end of the dryer.

[0029] The present invention has the following beneficial effects: Compared with the prior art, the present invention, through the design of two heat sources, enables heat to radiate from the outside to the inside and from the inside to the outside, which can rapidly raise the temperature of the raw materials to the optimal fermentation temperature. Furthermore, through the circulation of the heat exchange medium, a constant temperature state can be formed in the tank, keeping the raw materials at a suitable fermentation temperature, which is conducive to the normal progress of the fermentation process. Moreover, the heat of the heat exchange device comes from the subsequent dryer, so the present invention can also recover excess heat, which has the advantages of energy saving and environmental protection. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 Schematic diagram of a fermentation tank;

[0032] Figure 3 This is a schematic diagram showing the filter holes when they are open.

[0033] Figure 4 This is a schematic diagram showing the filter holes being closed.

[0034] Figure 5 This is a diagram illustrating the replacement of the hot water tank.

[0035] Figure 6 for Figure 5 Schematic diagram of the cross section in direction A;

[0036] Figure 7 This is a schematic diagram showing the connection of the flange pipe to the upper chamber.

[0037] Figure 8This is a schematic diagram showing the distribution of the arc-shaped pressure plates. Detailed Implementation

[0038] The following will refer to the appendices in the embodiments of the present invention. Figures 1-8 The technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0039] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0040] like Figure 1 An agricultural waste recycling device includes a fermentation tank 1 and a hot water exchange tank 2. The fermentation tank 1 includes a tank body 101, an insulation shell 108, a rotating column 116, a stirring rod 109, and a motor 105.

[0041] The tank 101 is used to put raw materials for fermentation. The heat-insulating shell 108 is sleeved on the tank 101, and a heat-insulating cavity is formed between the heat-insulating shell 108 and the tank 101. The rotating column 116 is rotatably disposed in the fermentation tank 1. The rotating column 116 is connected to the motor 105 for driving its rotation. The rotating column 116 has a hollow structure. A plurality of stirring rods 109 are fixedly connected to the outer side of the rotating column 116. Blind holes communicating with the interior of the rotating column 116 are provided in the stirring rods 109.

[0042] The two ends of the stirring rod 109 are connected to the hot water exchange tank 2, and the heat insulation cavity is connected to the hot water exchange tank 2. The hot water exchange tank 2 is equipped with a heat exchange device, a heat exchange medium, and a heating device. The heat exchange medium is diverted to the heat insulation cavity and the stirring rod 109 to form a temperature regulation function. The heat exchange device is connected to the dryer 3 and is used to exchange the heat of the exhaust gas generated by the dryer 3 into the heat exchange medium.

[0043] This invention is based on the recycling of agricultural waste and its conversion into feed, biofuel, and other products. The raw materials for agricultural waste can be corn, fruit and vegetable waste (roots, stems, leaves, etc.). Because the fermentation temperature needs to be controlled in real time during the fermentation process, different volumes, types, and seasons of agricultural waste require different optimal fermentation temperatures to ensure the normal operation of the fermentation process and guarantee product quality.

[0044] Specifically, the insulation cavity is annular, arranged around the tank 101, and the heat exchange medium can be water, coolant, or other media. After heating by the heat exchange device and heating device, the heat exchange medium reaches the ideal temperature. The heat exchange medium is divided and exists within the stirring rod 109, the rotating column 116, and the insulation shell 108, thus forming two heat sources radiating from the outside in and from the inside out. This effectively heats the raw materials, avoiding uneven heating. The stirring action of the stirring rod 109 improves contact efficiency, ultimately bringing the raw materials in the tank 101 to the optimal fermentation temperature. Compared to existing technologies, this invention, through the design of two heat sources, radiates heat from the outside in and from the inside out, rapidly raising the raw materials to the optimal fermentation temperature. Furthermore, the circulating flow of the heat exchange medium maintains a constant temperature within the tank 101, ensuring the raw materials are always at a suitable fermentation temperature, which is beneficial for the normal progress of the fermentation process. Since the heat from the heat exchange device originates from the subsequent dryer 3, this invention can also recover excess heat, offering energy-saving and environmentally friendly advantages.

[0045] In addition, a feeding pipe 115 is provided at the top of the tank 101, and a discharging pipe 114 is provided at the bottom of the tank 101. A conveyor belt 4 can be provided below the discharging pipe 114 to transport the fermented raw materials to the next process via the conveyor belt 4.

[0046] like Figure 2 The top of the tank 101 is fixedly connected to the upper top plate 102, and the bottom of the tank is fixedly connected to the lower bottom plate 111. The top of the rotating column 116 is rotatably connected to the upper top plate 102, and the bottom of the rotating column 116 is rotatably connected to the lower bottom plate 111.

[0047] The top of the rotating column 116 is rotatably connected to the upper connecting pipe 104, and the bottom of the rotating column 116 is rotatably connected to the lower connecting pipe 113. The upper connecting pipe 104 and the lower connecting pipe 113 are respectively connected to the hot water exchange tank 2.

[0048] Furthermore, the upper connecting pipe 104 is connected to the first upper branch pipe 501, and the heat insulation cavity is connected to the second upper branch pipe 502. The first upper branch pipe 501 and the second upper branch pipe 502 are arranged in parallel and are connected to the output pipe 5; the lower connecting pipe 113 is connected to the first lower branch pipe 602, and the heat insulation cavity is connected to the second lower branch pipe 601. The first lower branch pipe 602 and the second lower branch pipe 601 are arranged in parallel and are connected to the return water pipe 6;

[0049] Both the output pipe 5 and the return pipe 6 are connected to the hot water exchange tank 2. An output pump 505 is installed on the output pipe 5, and a return pump 605 is installed on the return pipe 6. The heat exchange medium in the hot water exchange tank 2 is diverted through the output pipe 5 to the first upper branch pipe 501 and the second upper branch pipe 502. The heat exchange medium in the rotating column 116 and the heat insulation shell 108 is returned to the return pipe 6 through the first lower branch pipe 602 and the second lower branch pipe 601, and then enters the hot water exchange tank 2.

[0050] The first upper branch pipe 501 and the second upper branch pipe 502, the first lower branch pipe 602 and the second lower branch pipe 601 form a diversion function, diverting the heat exchange medium into the rotating column 116 and the insulation shell 108.

[0051] Furthermore, a clean water inlet pipe 503 is connected in parallel to the first upper branch pipe 501 via a first three-way valve 504, and a wastewater outlet pipe 603 is connected in parallel to the first lower branch pipe 602 via a second three-way valve 604. The clean water inlet pipe 503 is used to input clean water into the rotating column 116 for cleaning and unblocking, and the wastewater outlet pipe 603 is used to output the cleaned wastewater.

[0052] The first three-way valve 504 and the second three-way valve 604 divide the first upper branch pipe 501 and the first lower branch pipe 602 into two sections respectively. By switching the ports of the three-way valves, the first upper branch pipe 501 is connected to the clean water input pipe 503 and the output pipe 5 respectively, and the first lower branch pipe 602 is connected to the wastewater output pipe 603 and the return water pipe 6 respectively.

[0053] Furthermore, the rotating column 116 has multiple filter holes 118 on its side. A sealing plate 110 is provided between two adjacent filter holes 118 in the circumferential direction of the rotating column 116. The sealing plate 110 fits against the inner side of the rotating column 116. Multiple limiting blocks 117 are fixedly connected to the inner side of the rotating column 116. The sealing plate 110 is located between two adjacent limiting blocks 117 in the circumferential direction of the rotating column 116, and the filter holes 118 are located between two adjacent limiting blocks 117. Multiple sealing plates 110, filter holes 118, and limiting blocks 117 are provided in the circumferential direction of the rotating column 116, and the number of sealing plates 110 and limiting blocks 117 is the same.

[0054] The top of the plurality of sealing plates 110 is connected to the motor 105, which drives the plurality of sealing plates 110 to rotate around the axis of the rotating column 116. When the sealing plate 110 abuts against one of the limiting blocks 117, the filter hole 118 is sealed by the sealing plate 110. When the sealing plate 110 abuts against another limiting block 117, the filter hole 118 is opened.

[0055] By rotating the motor 105 forward and backward, the sealing plate 110 has two position states, corresponding to the opening and closing of the water filter hole 118.

[0056] like Figure 3 After fermentation is complete and the raw materials need to be removed for the next process, motor 105 causes multiple sealing plates 110 to rotate counterclockwise, thereby opening the filter holes 118. The fermentation wastewater generated in the raw materials enters the rotating column 116, and after passing through the switching port of the second three-way valve 604, the wastewater is discharged through the wastewater output pipe 603. After the wastewater is discharged, the raw materials are removed. At this time, after passing through the switching port of the first three-way valve 504, clean water is input into the rotating column 116 through the clean water input pipe 503. This can clean the rotating column 116 and also unclog the filter holes 118. The clean wastewater generated at this time is still discharged through the wastewater output pipe 603.

[0057] like Figure 4 During fermentation, the motor 105 causes multiple sealing plates 110 to rotate continuously clockwise. The filter holes 118 are sealed by the sealing plates 110, and the sealing plates 110 abut against the limiting block 117. The limiting block 117 causes the rotating column 116 to rotate continuously to stir the raw materials. After passing through the first three-way valve 504 switching port, the heat exchange medium enters the rotating column 116. After passing through the second three-way valve 604 switching port, the heat exchange medium flows back to the return water pipe 6.

[0058] In this invention, the rotating column 116 not only serves the function of rotation and stirring, but also introduces the heat exchange medium and can penetrate the wastewater generated by the raw materials during the fermentation process.

[0059] Furthermore, the top of the plurality of sealing plates 110 is fixedly connected to an upper bushing 103, the upper bushing 103 is rotatably connected to the upper top plate 102, the upper bushing 103 is rotatably sleeved on the upper connecting pipe 104, the upper bushing 103 is connected to the motor 105, the motor 105 is fixedly connected to the upper top plate 102 through a bracket 106, and the bracket 106 is fixedly connected to the upper connecting pipe 104 through a connector 107;

[0060] The bottom of the plurality of sealing plates 110 is fixedly connected to a lower bushing 112, the lower bushing 112 is rotatably connected to the lower base plate 111, the lower bushing 112 is rotatably sleeved on the lower connecting pipe 113, and the lower connecting pipe 113 is detachably connected to the lower base plate 111.

[0061] The connection between the upper bushing 103 and the lower bushing 112 allows the upper connecting pipe 104 and the lower connecting pipe 113 to remain stationary, while the multiple sealing plates 110 can rotate relative to each other.

[0062] like Figure 5 The hot water exchange tank 2 includes a tank body 201, a lifting plate 202, and a fixing rod 213. The lifting plate 202 is slidably arranged inside the tank body 201. The fixing rod 213 is connected to the lifting plate 202. The top of the fixing rod 213 slidably extends out of the tank body 201. A nut threadedly connected to the fixing rod 213 is provided on the top of the tank body 201 to support the lifting plate 202.

[0063] The lifting plate 202 divides the interior of the housing 201 into an upper chamber 203 and a lower chamber 204. Both the upper chamber 203 and the lower chamber 204 are equipped with heat exchange medium. The heat exchange device is located in the upper chamber 203. The output pipe 5 and the return water pipe 6 are connected to the housing 201 through flange pipes. The flange pipes are fixedly connected to the side of the housing 201 and are connected to the output pipe 5 and the return water pipe 6 through screws, connectors, etc. The heating device is located at the bottom of the lower chamber 204. The heating device is existing technology, such as an electric heating tube. The lifting plate 202 is equipped with a switch valve 207 that connects the upper and lower chambers.

[0064] In this invention, the lifting plate 202 serves to switch the output pipe 5 and the return water pipe 6 between the upper and lower chambers, and also serves to carry the heat exchange medium in the upper chamber 203.

[0065] Since different raw materials require different fermentation temperatures, and the exhaust gas temperature generated by the dryer 3 also varies slightly, if the exhaust gas temperature is transferred to make the temperature of the heat exchange medium in the upper chamber 203 sufficient to meet the fermentation temperature requirements, then there is no need for a heating device to heat it; if the exhaust gas temperature generated by the dryer 3 is insufficient to make the temperature of the heat exchange medium sufficient to meet the fermentation requirements, then a heating device is required to intervene. In order to avoid the heat generated by the heating device being transferred to the exhaust gas of the heat exchange device, the present invention separates the heating device and the heat exchange device into two chambers.

[0066] like Figure 5When the temperature of the exhaust gas generated by the dryer 3 is insufficient to meet the fermentation requirements of the heat exchange medium, the lifting plate 202 rises above the flange pipe. The heating device then heats the heat exchange medium in the lower chamber 204, and the switching valve 207 opens periodically, allowing the heat exchange medium heated by the heat exchange device in the upper chamber 203 to enter the lower chamber 204. The temperature of the heat exchange medium in the lower chamber 204 is higher than that in the upper chamber 203. In this embodiment, the heat exchange device first heats the heat exchange medium in the upper chamber 203, serving a preheating function. After reaching the set temperature, it then enters the lower chamber 204 for further heating via the switching valve 207. In this embodiment, the heat exchange medium circulating is the one in the lower chamber 204, which fully utilizes and converts the waste heat generated by the dryer 3. The main effect is preheating the heat exchange medium, reducing the energy consumption of the heating device.

[0067] like Figure 7 When the temperature of the exhaust gas generated by the dryer 3 is sufficient to meet the fermentation temperature requirements of the heat exchange medium in the upper chamber 203, the lifting plate 202 descends below the flange pipe. At this point, the output pipe 5 and the return water pipe 6 connect to the upper chamber 203, and the heating device is turned off. The heat exchange medium is heated only by the heat exchange device. In this embodiment, the heat exchange medium circulating is the heat exchange medium within the upper chamber 203, which fully utilizes the waste heat generated by the dryer 3. The main effect is complete heating of the heat exchange medium, without the heating device participating in the operation.

[0068] In addition, a first water inlet 205 and a second water inlet 206 are provided on the side of the housing 201 for adding heat exchange medium into the housing 201. The first water inlet 205 and the second water inlet 206 are arranged side by side, one above the other. When the lifting plate 202 rises above the flange pipe, the first water inlet 205 connects to the upper chamber 203 and the second water inlet 206 connects to the lower chamber 204, and the heat exchange medium is replenished to the upper and lower chambers respectively.

[0069] like Figure 6 , Figure 8A sealing ring 208 is fitted onto the outer surface of the lifting plate 202. Multiple fixing rods 213 are provided. A limiting sleeve 212 is rotatably connected to the lower side of each fixing rod 213. The limiting sleeve 212 is rotatably connected to one end of a diagonal rod 210. The other end of the diagonal rod 210 is rotatably connected to an arc-shaped pressure plate 209. The arc-shaped pressure plate 209 abuts against the inner upper side of the sealing ring 208. An oblong hole is provided on the diagonal rod 210. A limiting pin is provided in the waist-shaped hole. The limiting pin is fixedly connected to the top of the limiting rod 211. The bottom of the limiting rod 211 is fixedly connected to the lifting plate 202. The lower end of the fixing rod 213 is threaded to the lifting plate 202. The fixing rod 213 is used to rotate so that the inclined rod 210 pushes the arc-shaped pressure plate 209 to squeeze the sealing ring 208. Multiple arc-shaped pressure plates 209 are coaxially distributed to form a circumferential structure and fit against the inner side of the sealing ring 208.

[0070] Specifically, the inclined rod 210 is inclined so that when the fixed rod 213 rotates and moves downward, the inclined rod 210 pushes the arc-shaped pressure plate 209 to compress the sealing ring 208 through the limiting support of the limiting rod 211. The sealing ring 208 is preferably made of rubber, which increases the compressive force between it and the housing 201 after being compressed, thereby improving the sealing effect.

[0071] In practice, when the lifting plate 202 needs to move up and down, multiple fixing rods 213 are rotated sequentially to stop the arc-shaped pressure plate 209 from pressing the sealing ring 208. At this time, the pressure between the sealing ring 208 and the housing 201 decreases, so the lifting plate 202 can be moved through the fixing rods 213. After the lifting plate 202 moves to the target position, the fixing rods 213 are rotated to make the arc-shaped pressure plate 209 press the sealing ring 208. The pressure between the sealing ring 208 and the housing 201 increases, which can form a seal and fix the sealing ring 208. Finally, the upper nut is put on the fixing rod 213 and supported on the top of the housing 201.

[0072] Furthermore, the heat exchange device is a heat exchange spiral tube 301, which is connected to the exhaust gas discharge end of the dryer 3. The heat exchange spiral tube 301 is located in the upper chamber 203, and its exhaust end 302 extends out from the top of the housing 201.

[0073] This invention also relates to a recycling process for agricultural waste, comprising the following steps:

[0074] The first step is to crush and saccharify the raw materials, and then ferment them;

[0075] The second step is to dehydrate and dry the fermented product to form feed.

[0076] Fermentation is carried out in fermentation tank 1, which can be stirred and the temperature can be adjusted, and the heat source comes from dryer 3.

[0077] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications, alterations, substitutions, or variations made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. A device for recycling agricultural waste, characterized by, The utility model relates to a fermentation tank (1) and heat exchange water tank (2), the fermentation tank (1) includes jar body (101), heat preservation shell (108), rotating column (116), stirring rod (109) and motor (105), The jar body (101) is used to put raw materials to ferment, the heat preservation shell (108) is sleeved on the jar body (101), the heat preservation shell (108) and the jar body (101) form heat preservation cavity, the rotating column (116) is rotatably arranged in the fermentation tank (1), the rotating column (116) is connected for driving the rotation of the motor (105), the rotating column (116) is hollow structure, a plurality of the stirring rod (109) is fixedly connected on the rotating column (116) outer side, the stirring rod (109) is provided with the blind hole that communicates the rotating column (116) inside, The both ends of the stirring rod (109) communicate the heat exchange water tank (2), the heat preservation cavity communicates the heat exchange water tank (2), the heat exchange water tank (2) is provided with heat exchange device, heat exchange medium and heating device, the heat exchange medium is shunted into the heat preservation cavity and the stirring rod (109), to form the function of temperature adjustment, the heat exchange device communicates the dryer (3), is used to exchange the waste gas heat of the dryer (3) into heat exchange medium, The side of the rotating column (116) is provided with a plurality of water filtering holes (118), the circumferential direction of the rotating column (116), between adjacent two water filtering holes (118) is provided with sealing plate (110), the sealing plate (110) is attached to the inner side of the rotating column (116), a plurality of limit blocks (117) are fixedly connected on the inner side of the rotating column (116), the circumferential direction of the rotating column (116), the sealing plate (110) is located between adjacent two limit blocks (117), the water filtering hole (118) is located between adjacent two limit blocks (117); The top of a plurality of sealing plates (110) is connected with the motor (105), for driving a plurality of sealing plates (110) rotate around the axis of the rotating column (116), when the sealing plate (110) abuts one of the limit blocks (117), the water filtering hole (118) is sealed by the sealing plate (110), when the sealing plate (110) abuts another limit block (117), the water filtering hole (118) is opened; When the water filtering hole (118) is opened, the fermentation wastewater generated in the raw materials enters the rotating column (116), and is output through the wastewater output pipe (603), and the clean water input pipe (503) inputs clean water to clean the rotating column (116); When the water filtering hole (118) is sealed by the sealing plate (110), the motor (105) drives a plurality of sealing plates (110) to rotate continuously, the rotating column (116) is rotated continuously by the limit block (117) to stir the raw materials, and the heat exchange medium enters the rotating column (116); The tank body (101) is fixedly connected with an upper top plate (102) at the top and with a lower bottom plate (111) at the bottom, and a rotating column (116) is rotatably connected with the upper top plate (102) at the top and rotatably connected with the lower bottom plate (111) at the bottom; The rotating column (116) is rotatably connected with an upper connecting pipe (104) at the top and rotatably connected with a lower connecting pipe (113) at the bottom, and the upper connecting pipe (104) and the lower connecting pipe (113) are respectively communicated with the heat exchange water tank (2); The top of a plurality of sealing plates (110) is fixedly connected with an upper shaft sleeve (103), the upper shaft sleeve (103) is rotatably connected with the upper top plate (102) and rotatably sleeved on the upper connecting pipe (104), the upper shaft sleeve (103) is connected with the motor (105), the motor (105) is fixedly connected with the upper top plate (102) through a support (106), and the support (106) is fixedly connected with the upper connecting pipe (104) through a connecting head (107); The bottom of a plurality of sealing plates (110) is fixedly connected with a lower shaft sleeve (112), the lower shaft sleeve (112) is rotatably connected with the lower bottom plate (111) and rotatably sleeved on the lower connecting pipe (113), and the lower connecting pipe (113) is detachably connected with the lower bottom plate (111); The heat exchange water tank (2) comprises a tank body (201), a lifting plate (202) and a fixing rod (213), the lifting plate (202) is slidably arranged in the tank body (201), the fixing rod (213) is connected with the lifting plate (202), the fixing rod (213) is slidably arranged out of the tank body (201) at the top, and a nut for screwing the fixing rod (213) is arranged on the tank body (201) at the top to support the lifting plate (202); The tank body (201) is divided into an upper chamber (203) at the top and a lower chamber (204) at the bottom by the lifting plate (202), heat exchange medium is arranged in the upper chamber (203) and the lower chamber (204), the heat exchange device is arranged in the upper chamber (203), an output pipe (5) and a return pipe (6) are respectively communicated with the tank body (201) through flange pipes, and the heating device is arranged at the bottom of the lower chamber (204); When the lifting plate (202) is lifted to above the flange pipes, the heating device heats the heat exchange medium in the lower chamber (204), the switch valve (207) is periodically opened, so that the heat exchange medium in the upper chamber (203) heated by the heat exchange device enters the lower chamber (204), and the temperature of the heat exchange medium in the lower chamber (204) is higher than that of the heat exchange medium in the upper chamber (203). When the lifting plate (202) is lowered below the flange pipe, the output pipe (5) and the backwater pipe (6) communicate with the upper chamber (203), the heating device is closed, and the heat exchange medium only passes through the heat exchange device for heating.

2. The agricultural waste recycling device according to claim 1, wherein The upper connecting pipe (104) communicates with a first upper branch pipe (501), the heat preservation chamber communicates with a second upper branch pipe (502), the first upper branch pipe (501) and the second upper branch pipe (502) are arranged in parallel and communicate with the output pipe (5); the lower connecting pipe (113) communicates with a first lower branch pipe (602), the heat preservation chamber communicates with a second lower branch pipe (601), the first lower branch pipe (602) and the second lower branch pipe (601) are arranged in parallel and communicate with the backwater pipe (6); The output pipe (5) and the backwater pipe (6) both communicate with the heat exchange water tank (2), an output pump (505) is arranged on the output pipe (5), and a backwater pump (605) is arranged on the backwater pipe (6); the heat exchange medium in the heat exchange water tank (2) is divided into the first upper branch pipe (501) and the second upper branch pipe (502) through the output pipe (5), and the heat exchange medium in the rotating column (116) and the heat preservation shell (108) flows back to the backwater pipe (6) through the first lower branch pipe (602) and the second lower branch pipe (601) and then enters the heat exchange water tank (2).

3. The agricultural waste recovery apparatus as claimed in claim 2, wherein, A clean water input pipe (503) is connected in parallel to the first upper branch pipe (501) through a first three-way valve (504), and a waste water output pipe (603) is connected in parallel to the first lower branch pipe (602) through a second three-way valve (604); the clean water input pipe (503) is used for inputting clean water into the rotating column (116) for cleaning and dredging, and the waste water output pipe (603) is used for outputting cleaned waste water.

4. The agricultural waste recycling device as claimed in claim 1, wherein A sealing ring (208) is sleeved on the outer side of the lifting plate (202), a plurality of fixing rods (213) are arranged, the lower end side of the fixing rod (213) is rotatably connected with a limiting sleeve (212), one end of the limiting sleeve (212) is rotatably connected with one end of an inclined rod (210), the other end of the inclined rod (210) is rotatably connected with an arc-shaped pressing plate (209), the arc-shaped pressing plate (209) abuts against the upper end inner side of the sealing ring (208), a waist-shaped hole is arranged on the inclined rod (210), a limiting pin is arranged in the waist-shaped hole, the limiting pin is fixedly connected with the top of a limiting rod (211), the bottom of the limiting rod (211) is fixedly connected with the lifting plate (202), and the lower end of the fixing rod (213) is threadedly connected with the lifting plate (202); the fixing rod (213) is used for rotating to drive the inclined rod (210) to push the arc-shaped pressing plate (209) to extrude the sealing ring (208); a plurality of arc-shaped pressing plates (209) are coaxially distributed and abut against the inner side of the sealing ring (208).

5. The agricultural waste recycling device as claimed in claim 1, wherein The heat exchange device is a heat exchange spiral pipe (301), and the heat exchange spiral pipe (301) communicates with the exhaust end of the drying machine (3).

6. A process for recycling of agricultural waste, characterized by, The method comprises the following steps: First, the raw material is crushed, saccharified, and then fermented; Second, the fermented material is dehydrated and dried to form feed; The fermentation is carried out in a fermenter (1) as claimed in any one of claims 1-5, which is capable of stirring and temperature adjustment, and the heat source is from a dryer (3).

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