A dehydrated kitchen waste drying treatment device and treatment method

Abstract

This invention provides a dehydrated kitchen waste drying treatment device and method, belonging to the field of solid organic waste treatment technology. This invention achieves resource and energy utilization of kitchen waste through biological drying; it utilizes the heat of biochemical reaction and forced ventilation to accelerate moisture evaporation, achieving rapid removal of moisture from the material; it utilizes the mixing of materials from previous and subsequent days to achieve rapid inoculation of the material, avoiding multiple additions of reaction agents and reducing treatment costs; it utilizes the reflux of high-temperature materials to rapidly increase the lower heating value of the material, accelerating the reaction process while reducing the treatment costs associated with heating; the device of this invention has a simple structure, is easy to operate, and has low manufacturing costs.

Description

Technical Field

[0001] The invention belongs to the technical field of solid organic waste treatment, and specifically relates to a dehydrated kitchen waste drying treatment device and a treatment method. Background Art

[0002] With the improvement of living standards, the proportion of kitchen waste in the total amount of domestic waste has reached more than 40%, and in some large cities it has reached 60% to 80%. Kitchen waste includes rotten vegetable leaves and eggshells produced in daily life and household food processing, as well as leftovers, leftovers, bones, meat products, fruit peels, expired products and tea residues after meals. The components include easily degradable sugars and proteins and difficult to degrade cellulose and lipids. Although the proportion of different components varies due to the food habits of different places, overall, kitchen waste is composed of about 64% carbohydrates, 22% protein, 13% fat and 1% other impurities.

[0003] Kitchen waste is very easy to spoil and is the main source of odor pollution in urban life. A large amount of kitchen waste is dumped and landfilled, which occupies a lot of land resources; it is also easy to cause leachate to pollute the soil, groundwater and surface water. Kitchen waste also leads to the production of pathogens, which enter the human body through the food chain and endanger human health. Therefore, how to recycle, reduce and harmlessly treat kitchen waste is an important issue that needs to be solved urgently.

[0004] Mixing kitchen waste with other domestic waste and burning it to generate electricity is one of the important means to solve the above problems. However, the moisture content of domestic waste is about 50%, while the moisture content of kitchen waste is as high as over 80%. This results in high moisture content, low low calorific value and poor combustibility after the two are mixed, so auxiliary fuels such as fuel oil or coal need to be added to assist combustion. There are also many towns that directly landfill this type of mixed waste with high moisture content. However, direct landfill will produce a large amount of leachate, and will also release odorous gases and greenhouse gases, becoming a serious secondary pollution source. Not only does it pollute the environment, but it also seriously affects the lives and health of surrounding residents.

[0005] As a new solid waste treatment technology, bio-drying can be effectively applied to the treatment and reuse of kitchen waste. Bio-drying uses microorganisms to decompose organic matter in kitchen waste, uses the heat generated in the decomposition process, and adjusts the ventilation volume through external equipment to promote the rapid evaporation of water in the kitchen waste. The dried kitchen waste has the characteristics of high calorific value and can be used as a derivative fuel. However, the traditional bio-drying technology has a very low drying efficiency for kitchen waste, and usually takes a long time to dry, and the efficiency is low. In addition, in the traditional bio-drying process, the material temperature will decrease with the increase of ventilation volume, and low temperature is not suitable for the biochemical reaction of thermophilic microorganisms. Therefore, in order to keep the material at a relatively high temperature, the ventilation volume is usually kept at a low value. However, low ventilation volume will also reduce the efficiency of moisture removal, and finally lead to a long bio-drying time.

[0006] At present, the research on biological drying in food waste treatment mainly focuses on the research and development of drying equipment, the exploration of raw material processing methods, and the optimization of drying ventilation and other conditions.

[0007] The Chinese patent "Auxiliary heat enhanced kitchen waste rapid biological drying system and method" (202110907480.X) discloses an auxiliary heat enhanced kitchen waste rapid biological drying system and method, the system includes: a feed mixing tank; a medium temperature reaction tank, a first bacterial liquid spray head is provided on the upper inner wall of the medium temperature reaction tank, and the first bacterial liquid is a cellulose degrading bacterial liquid; a first compressed air heater; a high temperature drying tank, a second bacterial liquid spray head is provided on the upper inner wall of the high temperature drying tank, and the second bacterial liquid is a macromolecular organic matter degrading bacterial liquid; and a second compressed air heater. The present invention degrades different organic components in kitchen waste in a segmented and continuous cycle by adding thermophilic microorganisms that can effectively degrade different organic matter in a targeted segmented manner, effectively improving the degradation efficiency of organic matter in kitchen waste, and in this process, accompanied by auxiliary heat ventilation, and combined with the bioenergy generated in the aerobic metabolic reaction of microorganisms, the biological drying process of kitchen waste is accelerated, so that the moisture content of kitchen waste can be quickly reduced from 80% to below 30%. However, the system has a complex structure, is inconvenient to operate, and has high processing costs. Summary of the invention

[0008] The technical problem to be solved by the present invention is: in order to solve the traditional kitchen waste treatment problems and overcome the defects of the above-mentioned patents, a dehydrated kitchen waste drying treatment device is provided, which is easy to operate and has high working efficiency.

[0009] The technical solution adopted by the present invention to solve the technical problem is:

[0010] A dehydrated kitchen waste drying treatment device comprises a main reaction chamber and an auxiliary reaction chamber, wherein the main reaction chamber is a cylindrical structure, and the inner bottom of the main reaction chamber is designed to be a U-shaped structure. The upper part of the auxiliary reaction chamber is a cylindrical structure, and the bottom of the auxiliary reaction chamber is an oblique cone structure. The upper parts of the main reaction chamber and the auxiliary reaction chamber are of the same height, and the outer chamber walls of the main reaction chamber and the auxiliary reaction chamber are tangent and connected as a whole.

[0011] The main reaction chamber comprises a main reaction chamber shell, a main agitator, a return port, a discharge port, a main electric heating measurement and control device, a main aerator, a main air outlet, a main exhaust fan and a roller.

[0012] The main reaction chamber shell includes an outer protective sleeve, a heat-insulating layer and an inner heat-insulating layer. The outer protective sleeve is a cylindrical structure and is made of stainless steel or hard plastic material. The heat-insulating layer is a cylindrical structure and is made of heat-insulating material; the heat-insulating layer is arranged on the inner side of the outer protective sleeve. The inner heat-insulating layer is a cylindrical structure and is made of hard plastic material; the inner heat-insulating layer is arranged on the inner side of the heat-insulating layer.

[0013] The main reaction chamber shell is provided with a return port on one side connected to the auxiliary reaction chamber, and a discharge port on the other side. The main reaction chamber shell is provided with an opening and closing type return port switch door; the other side is provided with an opening and closing type discharge port switch door.

[0014] The main agitator includes a main agitator motor, a main transmission shaft and a spiral rising impeller. The main agitator motor is installed at the center of the top circular surface of the cylindrical shell of the main reaction chamber. The main transmission shaft passes through the center of the top circular surface of the cylindrical shell of the main reaction chamber and stands upright in the middle of the main reaction chamber. The main transmission shaft is connected to the rotating shaft of the main agitator motor, and the main agitator motor drives the main transmission shaft to rotate. The main transmission shaft is a hollow cylindrical structure. The spiral rising impeller is installed on the main transmission shaft, and the spiral rising impeller fits with the bottom surface of the U-shaped structure at the bottom of the main reaction chamber. Under the action of the spiral rising impeller, the kitchen waste is pushed and lifted to the main reaction chamber shell at the top, and then falls from the gap between the spiral rising impeller and the main reaction chamber shell to achieve reciprocating stir-frying and stirring. The spiral rising impeller is a hollow structure, and a number of air outlets are provided on the spiral rising impeller.

[0015] The main electric heating measuring and controlling device comprises a temperature probe, a heating wire tube and a starter and stopper. The temperature probe is embedded on the inner wall of the main reaction chamber, and the heating wire tube and the starter and stopper are arranged on the outer wall of the connection between the main reaction chamber and the auxiliary reaction chamber.

[0016] The main aerator includes a main air blower and a main air flow meter, and the main aerator is arranged on the outer wall of the connection between the main reaction chamber and the auxiliary reaction chamber. The pipeline of the main air blower is connected with the electric heating wire tube, the main transmission shaft and the spiral rising impeller. When the electric heating wire tube is powered on and working, the hot air generated is sent into the main reaction chamber by the main air blower through the main transmission shaft, the spiral rising impeller and the air outlet on the spiral rising impeller. When the electric heating wire tube is not working, the main air blower sends fresh cold air into the main reaction chamber through the main transmission shaft, the spiral rising impeller and the air outlet on the spiral rising impeller.

[0017] The main air outlet is arranged on the side wall at one side of the top of the main reaction chamber.

[0018] The main exhaust fan is arranged on the top of the main reaction chamber, and the main exhaust fan is connected to the main air outlet.

[0019] The roller is a universal wheel, which is arranged at the bottom of the shell of the main reaction chamber, and three or four rollers are provided.

[0020] The auxiliary reaction chamber comprises an auxiliary reaction chamber shell, an auxiliary stirrer, a material inlet, a material discharge port, an auxiliary electric heating measurement and control device, an auxiliary aerator, an auxiliary air outlet and an auxiliary exhaust fan.

[0021] The auxiliary reaction chamber shell includes an outer protective sleeve, a heat-insulating layer and an inner heat-insulating layer. The outer protective sleeve is made of stainless steel or hard plastic material. The heat-insulating layer is made of heat-insulating material; the heat-insulating layer is arranged on the inner side of the outer protective sleeve. The inner heat-insulating layer is made of hard plastic material; the inner heat-insulating layer is arranged on the inner side of the heat-insulating layer.

[0022] The auxiliary agitator includes an auxiliary stirring motor, an auxiliary transmission shaft and a stirring impeller. The auxiliary stirring motor is installed at the center of the top circular surface of the cylindrical shell of the auxiliary reaction chamber. The auxiliary transmission shaft passes through the center of the top circular surface of the cylindrical shell of the auxiliary reaction chamber and stands upright in the middle of the auxiliary reaction chamber. The auxiliary transmission shaft is connected to the rotating shaft of the auxiliary stirring motor, and the auxiliary stirring motor drives the auxiliary transmission shaft to rotate. The auxiliary transmission shaft is a hollow cylindrical structure. The stirring impeller is installed on the auxiliary transmission shaft. The stirring impeller is a hollow structure, and a plurality of air outlet holes are provided on the stirring impeller.

[0023] The upper part of the side wall of the auxiliary reaction chamber shell on the other side connected to the main reaction chamber is provided with a feed inlet. The shell of the auxiliary reaction chamber is provided with a feed inlet sliding door.

[0024] The bottom of the auxiliary reaction chamber is designed as an inclined cone structure, the inclined cone is inclined toward the main reaction chamber, and a discharge port is provided at the bottom of the inclined cone connected to the main reaction chamber. A push-pull discharge port switch door is provided on the main reaction chamber shell.

[0025] The auxiliary electric heating measuring and controlling device comprises a temperature probe, an electric heating wire tube and a starter and stopper. The temperature probe is embedded on the inner wall of the auxiliary reaction chamber, and the electric heating wire tube and the starter and stopper are arranged on the outer wall of the connection between the main reaction chamber and the auxiliary reaction chamber.

[0026] The auxiliary aerator includes an auxiliary blower and an auxiliary air flow meter, and the auxiliary aerator is arranged on the outer wall of the connection between the main reaction chamber and the auxiliary reaction chamber. The pipeline of the auxiliary blower is connected with the electric heating wire tube, the auxiliary transmission shaft and the stirring impeller. When the electric heating wire tube is powered on and working, the hot air generated by the auxiliary blower is sent into the auxiliary reaction chamber through the auxiliary transmission shaft, the stirring impeller and the air outlet on the stirring impeller. When the electric heating wire tube is not working, the auxiliary blower sends fresh cold air into the auxiliary reaction chamber through the auxiliary transmission shaft, the stirring impeller and the air outlet on the stirring impeller.

[0027] The auxiliary air outlet is arranged on a side wall on one side of the top of the auxiliary reaction chamber.

[0028] The auxiliary exhaust fan is arranged on the top of the auxiliary reaction chamber, and the auxiliary exhaust fan is connected to the auxiliary air outlet.

[0029] A plurality of observation holes with transparent glass are arranged on the main reaction chamber shell and the auxiliary reaction chamber shell.

[0030] The method for treating kitchen waste using the above-mentioned dehydrated kitchen waste drying treatment device is as follows:

[0031] ① On the first day, close the discharge port, return port and discharge port, open the feed port, and let the crushed, squeezed and dehydrated kitchen waste enter the auxiliary reaction chamber from the feed port. Add the inoculated bacteria agent at a mass ratio of 10 to 5:1 between kitchen waste and bacteria agent, and the kitchen waste treatment enters the startup stage. The auxiliary agitator is used for stirring and mixing, and the stirring interval is set to 30 to 180 minutes, the stirring time is 2 to 15 minutes each time, and the speed is 2 to 15 r / min. The auxiliary aerator is used for ventilation and aeration, and the ventilation frequency is 20 to 40 min / h, and the air volume is 5 to 100 m 3 / h. Turn on the auxiliary electric heating controller, and hot air enters the auxiliary reaction chamber through the stirring impeller and the air outlet. When the temperature of the kitchen waste in the auxiliary reaction chamber is higher than 35°C, the electric heating wire tube stops heating, and when the temperature of the kitchen waste in the auxiliary reaction chamber is lower than 20°C, the electric heating wire tube restarts heating. Every 30 to 120 minutes, the auxiliary exhaust fan sucks the high-humidity air in the auxiliary reaction chamber from the auxiliary air outlet for 1 to 10 minutes.

[0032] ② On the second day, repeat the work of the first day, except that no inoculant is added. After the two days' kitchen waste is mixed, the kitchen waste of the previous day is heated and inoculated for the kitchen waste of the next day.

[0033] ③ On the third day, the discharge port is opened and the main agitator is started. Under the action of the spiral rising impeller, the kitchen waste in the main reaction chamber is pushed up. While the main reaction chamber vacates the lower space, the kitchen waste in the auxiliary reaction chamber enters the main reaction chamber due to gravity. After half of the kitchen waste in the auxiliary reaction chamber enters the main reaction chamber, the discharge port is closed. The remaining half of the kitchen waste in the auxiliary reaction chamber is heated and inoculated for the kitchen waste added later.

[0034] Then the operating steps in the auxiliary reaction chamber are the same as those on the second day.

[0035] The main agitator in the main reaction chamber is used for stirring and mixing, and the stirring interval is set to 30-180 minutes, each stirring time is 2-20 minutes, and the speed is 3-15r / min. The main aerator is used for ventilation and aeration, and the ventilation frequency is 20-40min / h, and the air volume is 5-150m 3 / h. Turn on the main electric heating control device, and the hot air enters the main reaction chamber through the main transmission shaft and the spiral rising impeller. When the temperature of the kitchen waste in the main reaction chamber is higher than 55°C, the electric heating wire tube stops heating, and when the temperature of the kitchen waste in the main reaction chamber is lower than 45°C, the electric heating wire tube restarts heating. The high-humidity air in the main reaction chamber is sucked from the main air outlet for 1 to 10 minutes every 30 to 120 minutes through the main exhaust fan.

[0036] ④The operation process on the fourth, fifth and sixth days is the same as that on the third day.

[0037] ⑤ On the seventh day, the discharge port is opened, and the kitchen waste is pushed up by the spiral impeller. The kitchen waste is pushed up to the discharge port. Due to the obstruction of the opening and closing switch door, the kitchen waste cannot fall from the gap between the spiral impeller and the main reaction chamber shell, but flows out of the main reaction chamber. When one-fourth of the kitchen waste in the main reaction chamber is discharged, the discharge port is closed and the discharge port is opened. Under the action of gravity and the spiral impeller, one-half of the kitchen waste in the auxiliary reaction chamber enters the main reaction chamber and then the discharge port is closed. Then the return port is opened, and the kitchen waste is pushed up by the spiral impeller. The kitchen waste is pushed up to the return port. Due to the obstruction of the opening and closing switch door, the kitchen waste cannot fall from the gap between the spiral impeller and the main reaction chamber shell, but flows from the main reaction chamber into the auxiliary reaction chamber, and one-eighth of the kitchen waste in the main reaction chamber is discharged into the auxiliary reaction chamber for heating and inoculation of the kitchen waste added later. Then close the return port; open the feed port, and the kitchen waste after crushing, squeezing and dehydration enters the auxiliary reaction chamber through the feed port.

[0038] Then the stirring, aeration and heating processes in the main reaction chamber and the auxiliary reaction chamber are the same as on the sixth day.

[0039] The operation of the seventh day is repeated every day thereafter, and the dehydrated food waste drying treatment device enters the continuous operation stage.

[0040] The beneficial effects of the present invention are as follows: ① the present invention realizes the energy utilization of kitchen waste resources through biological drying; ② utilizes the heat of biochemical reaction and forced ventilation to accelerate the evaporation of water, and realizes the rapid removal of moisture from materials; ③ utilizes the mixing of materials from the previous and next days to realize the rapid inoculation of materials, avoids multiple additions of reaction bacteria agents, and reduces the processing cost; ④ utilizes the reflux of high-temperature materials to realize the rapid improvement of the low calorific value of the materials, accelerates the reaction process, and reduces the processing cost caused by heating; ⑤ the device of the present invention has a simple structure, is easy to operate, and has a low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0042] Figure 1 is a schematic structural diagram of an embodiment of the present invention; Figure 2 2 is a top view of an embodiment of the present invention.

[0043] Figure 1 , Figure 2 Middle: 1. Main reaction chamber, 1-1. Main reaction chamber shell, 1-2. Main agitator, 1-3. Return port, 1-3-1. Opening and closing switch door of return port, 1-4. Discharge port, 1-4-1. Opening and closing switch door of discharge port, 1-5. Main electric heating measurement and control device, 1-6. Main aerator, 1-7. Main air outlet, 1-8. Main exhaust fan, 1-9. Roller, 2. Auxiliary reaction chamber, 2-1. Auxiliary reaction chamber shell, 2-2. Auxiliary agitator, 2-3. Feed port, 2-4. Discharge port, 2-5. Auxiliary electric heating measurement and control device, 2-6. Auxiliary aerator, 2-7. Auxiliary air outlet, 2-8. Auxiliary exhaust fan. DETAILED DESCRIPTION

[0044] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0045] Example

[0046] like Figure 1 A dehydrated kitchen waste drying treatment device is shown, comprising a main reaction chamber 1 and an auxiliary reaction chamber 2, wherein the main reaction chamber 1 is a cylindrical structure, and the inner bottom of the main reaction chamber 1 is designed as a U-shaped structure. The upper part of the auxiliary reaction chamber 2 is a cylindrical structure, and the bottom of the auxiliary reaction chamber 2 is an oblique cone structure. The upper parts of the main reaction chamber 1 and the auxiliary reaction chamber 2 are of the same height, and the outer chamber walls of the main reaction chamber 1 and the auxiliary reaction chamber 2 are tangent and connected as a whole.

[0047] The main reaction chamber 1 includes a main reaction chamber shell 1-1, a main agitator 1-2, a return port 1-3, a discharge port 1-4, a main electric heating measurement and control device 1-5, a main aerator 1-6, a main air outlet 1-7, a main exhaust fan 1-8 and a roller 1-9.

[0048] The main reaction chamber housing 1-1 includes an outer protective sleeve, a heat-insulating layer and an inner heat-insulating layer. The outer protective sleeve is a cylindrical structure and is made of stainless steel or hard plastic material. The heat-insulating layer is a cylindrical structure and is made of heat-insulating material; the heat-insulating layer is arranged on the inner side of the outer protective sleeve. The inner heat-insulating layer is a cylindrical structure and is made of hard plastic material; the inner heat-insulating layer is arranged on the inner side of the heat-insulating layer.

[0049] The main reaction chamber housing 1-1 is provided with a return port 1-3 on one side connected to the auxiliary reaction chamber 2, and a discharge port 1-4 on the other side. The main reaction chamber housing 1-1 is provided with an opening and closing type return port switch door 1-3-1; and the other side is provided with an opening and closing type discharge port switch door 1-4-1.

[0050] The main agitator 1-2 includes a main agitator motor, a main transmission shaft and a spiral rising impeller. The main agitator motor is installed at the center of the top circular surface of the cylindrical shell of the main reaction chamber. The main transmission shaft passes through the center of the top circular surface of the cylindrical shell of the main reaction chamber and stands upright in the middle of the main reaction chamber. The main transmission shaft is connected to the rotating shaft of the main agitator motor, and the main agitator motor drives the main transmission shaft to rotate. The main transmission shaft is a hollow cylindrical structure. The spiral rising impeller is installed on the main transmission shaft, and the spiral rising impeller fits with the bottom surface of the U-shaped structure at the bottom of the main reaction chamber. Under the action of the spiral rising impeller, the kitchen waste is pushed and lifted to the main reaction chamber shell at the top, and then falls from the gap between the spiral rising impeller and the main reaction chamber shell to achieve reciprocating stir-frying and stirring. The spiral rising impeller is a hollow structure, and a number of air outlets are provided on the spiral rising impeller.

[0051] The main electric heating measuring and controlling device 1-5 includes a temperature probe, a heating wire tube and a starter and stopper. The temperature probe is embedded on the inner wall of the main reaction chamber 1, and the heating wire tube and the starter and stopper are arranged on the outer wall of the connection between the main reaction chamber 1 and the auxiliary reaction chamber 2.

[0052] The main aerator 1-6 includes a main air blower and a main air flow meter, and the main aerator is arranged on the outer wall of the connection between the main reaction chamber 1 and the auxiliary reaction chamber 2. The pipeline of the main air blower is connected with the electric heating wire tube, the main transmission shaft and the spiral rising impeller. When the electric heating wire tube is powered on and working, the hot air generated is sent into the main reaction chamber 1 by the main air blower through the main transmission shaft, the spiral rising impeller and the air outlet on the spiral rising impeller. When the electric heating wire tube is not working, only fresh cold air is sent into the main reaction chamber 1 by the main air blower through the main transmission shaft, the spiral rising impeller and the air outlet on the spiral rising impeller.

[0053] The main air outlet 1-7 is arranged on the side wall on one side of the top of the main reaction chamber.

[0054] The main exhaust fan 1-8 is arranged on the top of the main reaction chamber, and the main exhaust fan 1-8 is connected to the main air outlet 1-7.

[0055] The rollers 1-9 are universal wheels, which are arranged at the bottom of the shell of the main reaction chamber, and there are three rollers.

[0056] The auxiliary reaction chamber 2 comprises an auxiliary reaction chamber shell 2-1, an auxiliary agitator 2-2, a material inlet 2-3, a material discharge port 2-4, an auxiliary electric heating measurement and control device 2-5, an auxiliary aerator 2-6, an auxiliary air outlet 2-7 and an auxiliary exhaust fan 2-8.

[0057] The auxiliary reaction chamber housing 2-1 includes an outer protective sleeve, a heat-insulating layer and an inner heat-insulating layer. The outer protective sleeve is made of stainless steel or hard plastic material. The heat-insulating layer is made of heat-insulating material; the heat-insulating layer is arranged on the inner side of the outer protective sleeve. The inner heat-insulating layer is made of hard plastic material; the inner heat-insulating layer is arranged on the inner side of the heat-insulating layer.

[0058] The auxiliary agitator 2-2 includes an auxiliary stirring motor, an auxiliary transmission shaft and a stirring impeller. The auxiliary stirring motor is installed at the center of the top circular surface of the cylindrical shell of the auxiliary reaction chamber. The auxiliary transmission shaft passes through the center of the top circular surface of the cylindrical shell of the auxiliary reaction chamber and stands upright in the middle of the auxiliary reaction chamber. The auxiliary transmission shaft is connected to the rotating shaft of the auxiliary stirring motor, and the auxiliary stirring motor drives the auxiliary transmission shaft to rotate. The auxiliary transmission shaft is a hollow cylindrical structure. The stirring impeller is installed on the auxiliary transmission shaft. The stirring impeller is a hollow structure, and a plurality of air outlet holes are provided on the stirring impeller.

[0059] An inlet 2-3 is provided on the upper part of the side wall of the auxiliary reaction chamber shell 2-1 on the other side connected to the main reaction chamber 1, and an inlet sliding door is provided on the shell of the auxiliary reaction chamber 2.

[0060] The bottom of the auxiliary reaction chamber 2 is designed as an inclined cone structure, which is inclined toward the main reaction chamber 1. A discharge port 2-4 is provided at the bottom of the inclined cone connected to the main reaction chamber 1. A push-pull discharge port switch door is provided on the main reaction chamber shell 1-1.

[0061] The auxiliary electric heating measuring and controlling device 2-5 includes a temperature probe, a heating wire tube and a starter and stopper. The temperature probe is embedded on the inner wall of the auxiliary reaction chamber 2, and the heating wire tube and the starter and stopper are arranged on the outer wall of the connection between the main reaction chamber 1 and the auxiliary reaction chamber 2.

[0062] The auxiliary aerator 2-6 includes an auxiliary blower and an auxiliary air flow meter, and the auxiliary aerator is arranged on the outer wall of the connection between the main reaction chamber 1 and the auxiliary reaction chamber 2. The pipeline of the auxiliary blower is connected with the electric heating wire tube, the auxiliary transmission shaft and the stirring impeller. When the electric heating wire tube is powered on, the hot air generated is sent into the auxiliary reaction chamber 2 through the auxiliary transmission shaft, the stirring impeller and the air outlet on the stirring impeller. When the electric heating wire tube is not working, only fresh cold air is sent into the auxiliary reaction chamber 2 by the auxiliary blower through the auxiliary transmission shaft, the stirring impeller and the air outlet on the stirring impeller.

[0063] The auxiliary air outlet 2 - 7 is arranged on the side wall of the top side of the auxiliary reaction chamber 2 .

[0064] The auxiliary exhaust fan 2-8 is arranged at the top of the auxiliary reaction chamber 2, and the auxiliary exhaust fan 2-8 is connected to the auxiliary air outlet 2-7.

[0065] A plurality of observation holes with transparent glass are arranged on the main reaction chamber shell 1-1 and the auxiliary reaction chamber shell 2-1.

[0066] The method for treating kitchen waste using the above-mentioned dehydrated kitchen waste drying treatment device is as follows:

[0067] ① On the first day, close the return port 1-3, the discharge port 1-4 and the discharge port 2-4, open the feed port 2-3, and the kitchen waste after crushing, squeezing and dehydration enters the auxiliary reaction chamber 2 from the feed port 2-3. The inoculated bacteria agent is added at a mass ratio of 5:1 between kitchen waste and bacteria agent, and the kitchen waste treatment enters the startup stage. The auxiliary agitator 2-2 is used for stirring and mixing, and the stirring interval is set to 60min, the stirring time is 10min each time, and the speed is 10r / min. The auxiliary aerator 2-6 is used for ventilation and aeration, and the ventilation frequency is 30min / h, and the air volume is 80m 3 / h. Turn on the auxiliary electric heating controller 2-5, and the hot air enters the auxiliary reaction chamber 2 through the stirring impeller and the air outlet. When the temperature of the kitchen waste in the auxiliary reaction chamber is higher than 35°C, the electric heating wire tube stops heating, and when the temperature of the kitchen waste in the auxiliary reaction chamber is lower than 20°C, the electric heating wire tube restarts heating. Every 60 minutes, the auxiliary exhaust fan 2-8 sucks the high-humidity air in the auxiliary reaction chamber from the auxiliary air outlet 2-7 for 5 minutes.

[0068] ② On the second day, the work of the first day is repeated, except that no inoculant is added. After the two days of kitchen waste are mixed, the kitchen waste of the previous day is heated and inoculated for the kitchen waste of the next day.

[0069] ③ On the third day, the discharge port 2-4 is opened, and the main agitator 1-2 is started. The kitchen waste in the main reaction chamber 1 is pushed up by the spiral ascending impeller. The main reaction chamber 1 vacates the lower space, and the kitchen waste in the auxiliary reaction chamber 2 enters the main reaction chamber 1 due to gravity. After half of the kitchen waste in the auxiliary reaction chamber 2 enters the main reaction chamber 1, the discharge port 2-4 is closed. The remaining half of the kitchen waste in the auxiliary reaction chamber 2 is heated and inoculated for the kitchen waste added later.

[0070] Then the operation steps in the auxiliary reaction chamber 2 are the same as those on the second day.

[0071] The main agitator 1-2 in the main reaction chamber 1 performs stirring and mixing, and the stirring interval is set to 60 minutes, the stirring time is 10 minutes each time, and the speed is 10r / min. The main aerator 1-6 performs ventilation and aeration, and the ventilation frequency is 30min / h, and the air volume is 90m 3 / h. Turn on the main electric heating controller 1-5, and the hot air enters the main reaction chamber 1 through the main transmission shaft and the spiral rising impeller. When the temperature of the kitchen waste in the main reaction chamber 1 is higher than 55°C, the electric heating wire tube stops heating, and when the temperature of the kitchen waste in the main reaction chamber is lower than 45°C, the electric heating wire tube restarts heating. Every 60 minutes, the main exhaust fan 1-8 sucks the high-humidity air in the main reaction chamber from the main air outlet 1-7 for 5 minutes.

[0072] ④The steps for the fourth, fifth and sixth days are the same as those for the third day.

[0073] ⑤ On the seventh day, the discharge port 1-4 is opened, and the kitchen waste is pushed up by the action of the spiral rising impeller. The kitchen waste is pushed up to the discharge port 1-4. Due to the obstruction of the opening and closing discharge port switch door 1-4-1, the kitchen waste cannot fall from the gap between the spiral rising impeller and the main reaction chamber shell, but flows out of the main reaction chamber 1. When one quarter of the kitchen waste in the main reaction chamber 1 is discharged, the discharge port 1-4 is closed and the discharge port 2-4 is opened. Under the action of gravity and the spiral rising impeller, one half of the kitchen waste in the auxiliary reaction chamber 2 enters the main reaction chamber 1 and then the discharge port 2-4 is closed. Then open the return port 1-3, and the kitchen waste is pushed up by the action of the spiral impeller, and the kitchen waste is pushed up to the return port 1-3. Due to the obstruction of the opening and closing return port switch door 1-3-1, the kitchen waste cannot fall from the gap between the spiral impeller and the main reaction chamber shell, but flows into the auxiliary reaction chamber 2 from the main reaction chamber 1, and one eighth of the kitchen waste in the main reaction chamber 1 is discharged into the auxiliary reaction chamber 2, which is used to heat and inoculate the kitchen waste added later, and then close the return port 1-3.

[0074] The feed inlet 2-3 is opened, and fresh kitchen waste enters the auxiliary reaction chamber 2 through the feed inlet 2-3.

[0075] Then the stirring, aeration and heating processes in the main reaction chamber 1 and the auxiliary reaction chamber 2 are the same as those on the sixth day.

[0076] The operation of the seventh day is repeated every day thereafter, and the dehydrated food waste drying treatment device enters the continuous operation stage.

[0077] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A method for drying and treating dehydrated kitchen waste, characterized in that: The dehydration kitchen waste drying treatment device is realized, comprising a main reaction chamber and an auxiliary reaction chamber, wherein the main reaction chamber is a cylindrical structure, and the inner bottom of the main reaction chamber is designed as a U-shaped structure; the upper part of the auxiliary reaction chamber is a cylindrical structure, and the bottom of the auxiliary reaction chamber is an oblique cone structure; the upper parts of the main reaction chamber and the auxiliary reaction chamber are of the same height, and the outer chamber walls of the main reaction chamber and the auxiliary reaction chamber are tangent and connected as a whole; The main reaction chamber comprises a main reaction chamber shell, a main agitator, a return port, a discharge port, a main electric heating measurement and control device, a main aerator, a main air outlet, a main exhaust fan and a roller; The main reaction chamber shell includes an outer protective sleeve, a thermal insulation layer and an inner insulation layer; The main reaction chamber shell is provided with a return port on one side connected to the auxiliary reaction chamber, and a discharge port on the other side opposite thereto; the main reaction chamber shell is provided with an opening and closing type return port switch door; and the other side opposite thereto is provided with an opening and closing type discharge port switch door; The main agitator comprises a main agitator motor, a main transmission shaft and a spiral rising impeller; the main agitator motor is installed at the center of the top circular surface of the cylindrical shell of the main reaction chamber; the main transmission shaft passes through the center of the top circular surface of the cylindrical shell of the main reaction chamber and stands upright in the middle of the main reaction chamber, the main transmission shaft is connected with the rotating shaft of the main agitator motor, and the main agitator motor drives the main transmission shaft to rotate; the main transmission shaft is a hollow cylindrical structure; the spiral rising impeller is installed on the main transmission shaft, and the spiral rising impeller fits with the bottom surface of the U-shaped structure at the bottom of the main reaction chamber. Under the action of the spiral rising impeller, the kitchen waste is pushed and lifted to the top of the main reaction chamber shell, and then falls from the gap between the spiral rising impeller and the main reaction chamber shell to achieve reciprocating frying and stirring; the spiral rising impeller is a hollow structure, and a number of air outlets are provided on the spiral rising impeller; The main electric heating measurement and control device includes a temperature probe, a heating wire tube and a starter and stopper; the temperature probe is embedded on the inner wall of the main reaction chamber, and the heating wire tube and the starter and stopper are arranged on the outer wall of the connection between the main reaction chamber and the auxiliary reaction chamber; The main aerator comprises a main air blower and a main air flow meter, and the main aerator is arranged on the outer wall of the connection between the main reaction chamber and the auxiliary reaction chamber; the pipeline of the main air blower is connected with the electric heating wire tube, the main transmission shaft and the spiral rising impeller, and the hot air generated when the electric heating wire tube is powered on is sent into the main reaction chamber by the main air blower through the main transmission shaft, the spiral rising impeller and the air outlet on the spiral rising impeller; when the electric heating wire tube is not working, the fresh cold air is sent into the main reaction chamber by the main air blower through the main transmission shaft, the spiral rising impeller and the air outlet on the spiral rising impeller; The main air outlet is arranged on the side wall on one side of the top of the main reaction chamber; The main exhaust fan is arranged on the top of the main reaction chamber, and the main exhaust fan is connected to the main air outlet; The auxiliary reaction chamber comprises an auxiliary reaction chamber shell, an auxiliary agitator, a material inlet, a material discharge port, an auxiliary electric heating measurement and control device, an auxiliary aerator, an auxiliary air outlet and an auxiliary exhaust fan; The auxiliary reaction chamber shell includes an outer protective sleeve, a thermal insulation layer and an inner insulation layer; The auxiliary agitator comprises an auxiliary agitator motor, an auxiliary transmission shaft and an agitator impeller; the auxiliary agitator motor is installed at the center of the top circular surface of the cylindrical shell of the auxiliary reaction chamber; the auxiliary transmission shaft passes through the center of the top circular surface of the cylindrical shell of the auxiliary reaction chamber and stands upright in the middle of the auxiliary reaction chamber, the auxiliary transmission shaft is connected to the rotating shaft of the auxiliary agitator motor, and the auxiliary agitator motor drives the auxiliary transmission shaft to rotate; the auxiliary transmission shaft is a hollow cylindrical structure; the agitator impeller is installed on the auxiliary transmission shaft; the agitator impeller is a hollow structure, and a plurality of air outlet holes are provided on the agitator impeller; A material inlet is provided on the upper part of the side wall of the auxiliary reaction chamber shell on the other side connected to the main reaction chamber; a material inlet sliding door is provided on the shell of the auxiliary reaction chamber; The bottom of the auxiliary reaction chamber is designed as an inclined cone structure, the inclined cone is inclined toward the main reaction chamber, and a discharge port is provided at the bottom of the inclined cone connected to the main reaction chamber; a push-pull discharge port switch door is provided on the main reaction chamber shell; The auxiliary electric heating measurement and control device includes a temperature probe, a heating wire tube and a starter and stop device; the temperature probe is embedded on the inner wall of the auxiliary reaction chamber, and the heating wire tube and the starter and stop device are arranged on the outer wall of the connection between the main reaction chamber and the auxiliary reaction chamber; The auxiliary aerator comprises an auxiliary blower and an auxiliary air flow meter, and the auxiliary aerator is arranged on the outer wall of the connection between the main reaction chamber and the auxiliary reaction chamber; the pipeline of the auxiliary blower is connected with the electric heating wire tube, the auxiliary transmission shaft and the stirring impeller, and the hot air generated when the electric heating wire tube is powered on is sent into the auxiliary reaction chamber by the auxiliary blower through the auxiliary transmission shaft, the stirring impeller and the air outlet on the stirring impeller; when the electric heating wire tube is not working, the auxiliary blower sends fresh cold air into the auxiliary reaction chamber through the auxiliary transmission shaft, the stirring impeller and the air outlet on the stirring impeller; The auxiliary air outlet is arranged on the side wall on one side of the top of the auxiliary reaction chamber; The auxiliary exhaust fan is arranged on the top of the auxiliary reaction chamber, and the auxiliary exhaust fan is connected to the auxiliary air outlet; A method for drying and treating dehydrated kitchen waste is as follows: ① On the first day, the discharge port, return port and discharge port are closed, and the feed port is opened. The kitchen waste after crushing, squeezing and dehydration enters the auxiliary reaction chamber from the feed port, and the inoculated bacteria agent is added according to the mass ratio of kitchen waste to bacteria agent of 10 to 5:1, and the kitchen waste treatment enters the startup stage; the auxiliary agitator is used for stirring and mixing, and the stirring interval is set to 30 to 180 minutes, the stirring time is 2 to 15 minutes each time, and the speed is 2 to 15r / min; the auxiliary aerator is used for ventilation and aeration, and the ventilation frequency is 20 to 40min / h, and the air volume is 5 to 100m 3 / h; turn on the auxiliary electric heating measurement and control device, and hot air enters the auxiliary reaction chamber through the stirring impeller and the air outlet; when the temperature of the kitchen waste in the auxiliary reaction chamber is higher than 35°C, the electric heating wire tube stops heating, and when the temperature of the kitchen waste in the auxiliary reaction chamber is lower than 20°C, the electric heating wire tube restarts heating; every 30 to 120 minutes, the auxiliary exhaust fan sucks the high-humidity air in the auxiliary reaction chamber from the auxiliary air outlet for 1 to 10 minutes; ② On the second day, repeat the work of the first day, except that no inoculant is added; after the two days' kitchen waste is mixed, the kitchen waste of the previous day is heated and inoculated for the kitchen waste of the next day; ③ On the third day, the discharge port is opened and the main agitator is started. Under the action of the spiral rising impeller, the kitchen waste in the main reaction chamber is pushed up. While the main reaction chamber vacates the lower space, the kitchen waste in the auxiliary reaction chamber enters the main reaction chamber due to gravity. After half of the kitchen waste in the auxiliary reaction chamber enters the main reaction chamber, the discharge port is closed; The remaining half of the kitchen waste in the auxiliary reaction chamber is used to heat and inoculate the kitchen waste added later; Then the operation steps in the auxiliary reaction chamber are the same as the second day; The main agitator in the main reaction chamber performs stirring and mixing, and the stirring interval is set to 30-180 minutes, each stirring time is 2-20 minutes, and the speed is 3-15r / min; the main aerator performs ventilation and aeration, and the ventilation frequency is 20-40min / h, and the air volume is 5-150m 3 / h; turn on the main electric heating measurement and control device, and hot air enters the main and auxiliary reaction chambers through the main transmission shaft and the spiral rising impeller; when the temperature of the kitchen waste in the main reaction chamber is higher than 55°C, the electric heating wire tube stops heating, and when the temperature of the kitchen waste in the main reaction chamber is lower than 45°C, the electric heating wire tube restarts heating; every 30 to 120 minutes, the main exhaust fan sucks the high-humidity air in the main reaction chamber from the main air outlet for 1 to 10 minutes; ④The operation process on the fourth, fifth and sixth days is the same as that on the third day; ⑤ On the seventh day, the discharge port is opened, and the kitchen waste is pushed and lifted by the action of the spiral rising impeller. The kitchen waste is pushed and lifted to the discharge port. Due to the obstruction of the opening and closing switch door, the kitchen waste cannot fall from the gap between the spiral rising impeller and the shell of the main reaction chamber, but flows out of the main reaction chamber. When one-fourth of the kitchen waste in the main reaction chamber is discharged, the discharge port is closed and the discharge port is opened. Under the action of gravity and the spiral rising impeller, one-half of the kitchen waste in the auxiliary reaction chamber enters the main reaction chamber and then the discharge port is closed; then the return port is opened, and the kitchen waste is pushed and lifted by the spiral rising impeller. The kitchen waste is pushed and lifted to the return port. Due to the obstruction of the opening and closing switch door, the kitchen waste cannot fall from the gap between the spiral rising impeller and the shell of the main reaction chamber, but flows from the main reaction chamber into the auxiliary reaction chamber, and one-eighth of the kitchen waste in the main reaction chamber is discharged into the auxiliary reaction chamber for heating and inoculation of the kitchen waste added later; then the return port is closed; Open the feed inlet, and the kitchen waste after crushing, squeezing and dehydration enters the auxiliary reaction chamber through the feed inlet; Then the stirring, aeration and heating process in the main reaction chamber and the auxiliary reaction chamber is the same as on the sixth day; The operation of the seventh day is repeated every day thereafter, and the dehydrated food waste drying treatment device enters the continuous operation stage.

2. A method for drying dehydrated kitchen waste according to claim 1, characterized in that: The outer protective cover of the main reaction chamber shell is a cylindrical structure and is made of stainless steel or hard plastic material; the thermal insulation layer is a cylindrical structure and is made of thermal insulation material; the thermal insulation layer is arranged on the inner side of the outer protective cover; the inner insulation layer is a cylindrical structure and is made of hard plastic material; the inner insulation layer is arranged on the inner side of the thermal insulation layer.

3. A method for drying dehydrated kitchen waste according to claim 1 or 2, characterized in that: The outer protective cover of the auxiliary reaction chamber shell is made of stainless steel or hard plastic material; the thermal insulation layer is made of thermal insulation material; the thermal insulation layer is arranged on the inner side of the outer protective cover; the inner insulation layer is made of hard plastic material; the inner insulation layer is arranged on the inner side of the thermal insulation layer.

4. A method for drying dehydrated kitchen waste according to claim 1 or 2, characterized in that: A plurality of observation holes with transparent glass are arranged on the main reaction chamber shell and the auxiliary reaction chamber shell.

5. The method for drying dehydrated kitchen waste according to claim 3, characterized in that: A plurality of observation holes with transparent glass are arranged on the main reaction chamber shell and the auxiliary reaction chamber shell.

6. A method for drying dehydrated kitchen waste according to claim 1, 2 or 5, characterized in that: The roller is a universal wheel, which is arranged at the bottom of the shell of the main reaction chamber, and three or four rollers are provided.

7. The method for drying dehydrated kitchen waste according to claim 3, characterized in that: The roller is a universal wheel, which is arranged at the bottom of the shell of the main reaction chamber, and three or four rollers are provided.

8. The method for drying dehydrated kitchen waste according to claim 4, characterized in that: The roller is a universal wheel, which is arranged at the bottom of the shell of the main reaction chamber, and three or four rollers are provided.

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