Distributed kitchen waste treatment device and working method thereof

Abstract

This application discloses a distributed kitchen waste treatment device, which includes a treatment component, a low-temperature heat pump, and a crushing and dehydration device. The treatment component includes a treatment box, which includes a housing. The housing has a treatment chamber, a first feed inlet, and an exhaust gas outlet. The treatment component also has an air inlet. This invention can reuse the humid and hot exhaust gas generated during the fermentation of kitchen waste. The low-temperature heat pump uses the heat from the humid and hot exhaust gas and the heat energy generated by its own operation to convert the air and humid and hot exhaust gas into dry and hot air for fermenting kitchen waste. Compared with the existing electric indirect heating method, this effectively reduces power consumption. Furthermore, the condensate generated by the humid and hot exhaust gas after being treated by the low-temperature heat pump is used to remove oil and salt from the kitchen waste, eliminating the need for additional hot water and achieving water recycling. This increases water utilization, saves costs, reduces wastewater volume, and makes the overall operation more energy-efficient and environmentally friendly.

Description

Technical Field

[0001] This invention relates to the field of kitchen waste treatment equipment technology, and more particularly to distributed kitchen waste treatment equipment and its working method. Background Technology

[0002] Kitchen waste refers to the waste generated in daily life, food processing, catering services, and institutional catering. Because kitchen waste contains extremely high levels of moisture and organic matter, it can be transformed into new resources through proper treatment and processing. Its high organic matter content allows it to be used as fertilizer or animal feed after strict treatment, and it can also produce biogas for fuel or power generation. The oil and fat components can be used to prepare biofuels.

[0003] Current food waste treatment devices mostly use indirect electric heating during the fermentation process, converting electrical energy into heat energy to provide the necessary temperature for fermentation. This process consumes a large amount of electricity, resulting in very high processing costs. Furthermore, the humid and hot exhaust gases generated during fermentation are usually directly released into the atmosphere after purification, leaving the heat from these gases unused and causing significant energy waste.

[0004] In addition, because kitchen waste has a high content of oil and salt, it cannot be used directly as organic fertilizer. Therefore, hot water is usually used to remove oil and salt from kitchen waste before fermentation. However, this requires a lot of water, which causes a certain degree of water waste and also increases the amount of wastewater produced during the treatment process. Summary of the Invention

[0005] One advantage of this invention is that it provides a distributed food waste treatment device and its operating method. This invention can reuse the humid heat waste gas generated during the fermentation of food waste. The low-temperature heat pump of this invention uses the heat of the humid heat waste gas and the heat energy generated by its own operation to convert the air and humid heat waste gas into dry hot air for fermenting food waste. Compared with the existing electric indirect heating method, it effectively reduces the power consumption. Furthermore, the condensate generated by the humid heat waste gas being treated by the low-temperature heat pump is used to remove oil and salt from the food waste without the need for additional hot water, thus achieving water recycling, saving costs, reducing wastewater volume, and making the humid heat waste gas effectively utilized. The overall operation is more energy-efficient and environmentally friendly.

[0006] One advantage of this invention is that it provides a distributed kitchen waste treatment device and its working method. Before the kitchen waste is fermented, this invention can perform multiple dehydration treatments on the kitchen waste to ensure that the moisture content of the kitchen waste is within a predetermined range, and to break down the kitchen waste to reduce its size so as to facilitate fermentation.

[0007] One advantage of this invention is that it provides a distributed kitchen waste treatment device and its working method. This invention can remove oil and salt from kitchen waste and control the oil and salt content within a predetermined range, so that the kitchen waste can be fully fermented and the fermented product can be used directly as organic fertilizer.

[0008] One advantage of this invention is that it provides a distributed kitchen waste treatment device and its working method. This invention can stir the kitchen waste to promote drainage and make the kitchen waste evenly heated to promote fermentation.

[0009] One advantage of this invention is that it provides a distributed kitchen waste treatment device and its working method. This invention can purify the wastewater and exhaust gas generated during the kitchen waste treatment process, ensuring that the wastewater and exhaust gas meet the emission requirements, so as to avoid environmental pollution from wastewater and exhaust gas.

[0010] One advantage of this invention is that it provides a distributed food waste treatment device and its working method. This invention can monitor the temperature of the environment in which the food waste is fermented and control the temperature within a predetermined range, thereby providing an excellent fermentation temperature for the food waste.

[0011] One advantage of this invention is that it provides a distributed food waste treatment device and its working method. This invention can monitor the oxygen content of the environment in which the food waste is fermenting and control the oxygen content above a predetermined value to meet the oxygen requirements of the food waste during fermentation.

[0012] To achieve at least one of the above advantages of the present invention, the present invention provides a distributed food waste treatment device, the distributed food waste treatment device comprising:

[0013] A processing component includes a processing box, the processing box including a box body, the box body having a processing chamber, a first inlet and an exhaust gas outlet, the first inlet and the exhaust gas outlet being connected to the processing chamber, the first inlet being used to introduce kitchen waste into the processing chamber, the processing chamber providing a fermentation site for the kitchen waste, the exhaust gas outlet being used to discharge the hot and humid exhaust gas generated by the fermentation of kitchen waste in the processing chamber, and the processing component having an air inlet connected to the processing chamber, the air inlet being used to introduce dry and hot air into the processing chamber;

[0014] A low-temperature heat pump has a hot air outlet, an air inlet, an exhaust gas inlet, an exhaust gas outlet, and a cold water outlet. The hot air outlet is connected to the air inlet via a pipeline, and the air inlet is connected to the outside. The exhaust gas inlet is connected to the exhaust gas outlet via a pipeline. The low-temperature heat pump is configured to utilize the heat from the humid exhaust gas introduced through the exhaust gas inlet and the heat energy generated by its own operation to convert the air and humid exhaust gas introduced through the air inlet into dry hot air, which is then directed from the hot air outlet to the air inlet. The exhaust gas outlet is used to discharge the cold dry exhaust gas generated by the treatment of the humid exhaust gas by the low-temperature heat pump. The cold water outlet is used to discharge the condensate generated by the treatment of the humid exhaust gas by the low-temperature heat pump.

[0015] A crushing and dewatering device includes a second inlet, a second outlet, a water inlet, and a second water outlet. The second inlet is used to introduce kitchen waste. The water inlet is connected to a cold water outlet via a pipeline so that condensate from the low-temperature heat pump can be directed through the cold water outlet to the water inlet to remove oil and salt from the kitchen waste. The crushing and dewatering device is configured to crush the kitchen waste introduced through the second inlet and mix the condensate introduced through the water inlet with the kitchen waste. The second outlet is used to discharge wastewater after the oil and salt removal operation of the kitchen waste is completed. The crushing and dewatering device is configured to dewater the kitchen waste while discharging wastewater through the second outlet. The second outlet is connected to the first inlet via a pipeline and is used to introduce the crushed, dewatered, and oil and salt-removed kitchen waste into the first inlet.

[0016] According to an embodiment of the present invention, the processing component includes a stirring assembly installed in the processing chamber. The stirring assembly includes a rotating shaft and at least one stirring element. The stirring element is installed on the rotating shaft, and the rotating shaft can drive the stirring element to rotate together to agitate the kitchen waste in the processing chamber. The rotating shaft has a communicating channel and at least one exhaust port. An air inlet is formed on the rotating shaft. Both the exhaust port and the air inlet are connected to the communicating channel. The air inlet is used to introduce dry hot air into the communicating channel. The communicating channel is configured to guide the dry hot air to the exhaust port and distribute it in the processing chamber through the exhaust port.

[0017] According to an embodiment of the present invention, the box further has a first water outlet and a first discharge outlet, both of which are connected to the processing chamber. The first water outlet is used to discharge wastewater from the kitchen waste in the processing chamber, and the first discharge outlet is used to discharge the products after fermentation of the kitchen waste. The processing box further includes a partition, which is installed in the processing chamber and divides the processing chamber into a supporting part and a water accumulating part. The first inlet is connected to the supporting part, and the first water outlet is connected to the water accumulating part. The partition has at least one set of through holes, and the supporting part is connected to the water accumulating part through the through holes. The partition is configured to drain the kitchen waste introduced into the supporting part by the first inlet, so that the wastewater can be introduced into the water accumulating part through the through holes and discharged from the first water outlet.

[0018] According to an embodiment of the present invention, the distributed kitchen waste treatment equipment further includes a feeding device, which is connected to the crushing and dewatering device via a pipeline. The feeding device has a first inlet and a first outlet. The first inlet is used to feed kitchen waste, and the first outlet is connected to a second feed inlet via a pipeline. The feeding device is configured to feed kitchen waste into the crushing and dewatering device. The distributed kitchen waste treatment equipment further includes a sewage treatment device, which is connected to the crushing and dewatering device and the housing via a pipeline. The sewage treatment device has at least a second inlet and a second outlet. The second inlet is connected to a first outlet and a second outlet via a pipeline. The sewage treatment device is configured to treat the sewage discharged from the first outlet and the second outlet. The second outlet is used to discharge the treated sewage.

[0019] According to an embodiment of the present invention, the distributed kitchen waste treatment equipment further includes a conveying device, which is installed on a pipeline between the crushing and dewatering device and the housing. The conveying device has a third inlet and a third outlet. The third inlet is connected to the second outlet through a pipeline, and the third outlet is connected to the first inlet through a pipeline. The conveying device is configured to convey kitchen waste introduced by the third inlet out of the third outlet and into the first inlet.

[0020] According to one embodiment of the present invention, the distributed kitchen waste treatment equipment further includes a fan, which is installed on the pipeline between the low-temperature heat pump and the treatment component. The fan has a fourth inlet and a fourth outlet. The fourth inlet is connected to the hot air outlet through the pipeline, and the fourth outlet is connected to the air inlet through the pipeline. The fan is configured to guide the dry hot air generated by the low-temperature heat pump treatment to be discharged from the hot air outlet and introduced into the treatment chamber through the air inlet.

[0021] According to an embodiment of the present invention, the distributed kitchen waste treatment equipment further includes an exhaust gas filter, which is installed on a pipeline between the housing and the low-temperature heat pump. The exhaust gas filter has a fifth inlet and a fifth outlet. The fifth inlet is connected to the exhaust gas outlet via a pipeline. The exhaust gas filter is configured to filter the humid and hot exhaust gas discharged from the exhaust gas outlet. The fifth outlet is connected to the exhaust gas inlet via a pipeline. The fifth outlet is used to guide the humid and hot exhaust gas filtered by the exhaust gas filter to the low-temperature heat pump. The distributed kitchen waste treatment equipment further includes a deodorization device, which is connected to the low-temperature heat pump via a pipeline. The deodorization device has a sixth inlet and a sixth outlet. The sixth inlet is connected to the exhaust gas outlet via a pipeline, so that the cold and dry exhaust gas in the low-temperature heat pump can be guided from the exhaust gas outlet to the sixth inlet. The deodorization device is used to purify the cold and dry exhaust gas discharged by the low-temperature heat pump. The sixth outlet is connected to the outside and is used to discharge the exhaust gas purified by the deodorization device.

[0022] According to one embodiment of the present invention, the distributed kitchen waste treatment equipment further includes a temperature sensor and a controller. The temperature sensor is installed in the housing and is at least partially located in the treatment chamber. The temperature sensor is used to monitor the temperature inside the treatment chamber. The temperature sensor is communicatively connected to the controller. The low-temperature heat pump is controllably connected to the controller. The controller is configured to control the temperature of the dry hot air generated by the low-temperature heat pump based on the feedback from the temperature sensor.

[0023] According to an embodiment of the present invention, the distributed kitchen waste treatment equipment further includes an oxygen content analyzer, which is installed in the housing and at least partially located in the treatment chamber. The oxygen content analyzer is used to monitor the oxygen content in the treatment chamber. The oxygen content analyzer is communicatively connected to the controller. A valve is respectively installed on the pipeline connected to the air inlet, the pipeline between the exhaust outlet and the sixth inlet, and the valve is controllably connected to the controller. The controller is configured to control the operation of the valve based on the feedback from the oxygen content analyzer to control whether air flows from the air inlet and whether exhaust gas flows from the exhaust outlet.

[0024] To achieve at least one of the advantages of the present invention, the present invention provides a method for operating a distributed food waste treatment device, the method comprising the following steps:

[0025] (A) The fermentation of kitchen waste in the box produces hot and humid exhaust gas, which is discharged from the exhaust gas outlet and enters the low-temperature heat pump through the exhaust gas inlet.

[0026] (B) The low-temperature heat pump uses the temperature of the humid waste gas and the heat energy generated by its own operation to convert the air and humid waste gas entering through the air inlet into dry hot air. The dry hot air is discharged from the hot air outlet and discharged into the processing chamber through the air inlet, providing the environment required for the fermentation of the kitchen waste in the processing chamber.

[0027] (C) The low-temperature heat pump utilizes the temperature of the hot and humid waste gas to convert the water vapor in the hot and humid waste gas into condensate. The condensate is discharged through the cold water outlet and enters the crushing and dehydration device through the water inlet to remove oil and salt from the kitchen waste in the crushing and dehydration device. At the same time, the crushing and dehydration device crushes the kitchen waste. Finally, the kitchen waste that has undergone oil and salt removal and crushing and dehydration treatment in the crushing and dehydration device is discharged through the second discharge port and enters the processing chamber through the first feed port. Attached Figure Description

[0028] Figure 1 A schematic diagram of the structure of the distributed kitchen waste treatment equipment of the present invention is shown.

[0029] Figure 2 A partial structural perspective view of the distributed kitchen waste treatment equipment described in this invention is shown.

[0030] Figure 3 A partial structural cross-sectional view of the distributed food waste treatment device of the present invention is shown.

[0031] Figure 4 This is a cross-sectional view of a portion of the structure of the distributed food waste treatment device of the present invention from another perspective. Detailed Implementation

[0032] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0033] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting this invention.

[0034] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0035] refer to Figures 1 to 4 A preferred embodiment of the distributed food waste treatment device according to the present invention will be described in detail below. The distributed food waste treatment device is used to treat food waste containing oil and salt.

[0036] The distributed kitchen waste treatment equipment includes a treatment component 10, which includes a treatment box 11. The treatment box 11 includes a box body 111, which has a treatment chamber 11101, a first feed inlet 11102, and an exhaust gas outlet 11103. The first feed inlet 11102 and the exhaust gas outlet 11103 are both connected to the treatment chamber 11101. The treatment chamber 11101 provides a fermentation site for kitchen waste. The first feed inlet 11102 is used to introduce kitchen waste into the treatment chamber 11101, and the exhaust gas outlet 11103 is used to discharge the hot and humid exhaust gas generated by the fermentation of kitchen waste in the treatment chamber 11101.

[0037] refer to Figure 3 The housing 111 also has a first water outlet 11104 that communicates with the processing chamber 11101. The first water outlet 11104 is used to discharge sewage from the kitchen waste in the processing chamber 11101.

[0038] Preferably, the first outlet 11104 is located at the bottom of the box 111, so that the water in the kitchen waste in the processing chamber 11101 flows from the top to the bottom of the box 111 under its own gravity and is discharged through the first outlet 11104, increasing the convenience of sewage discharge.

[0039] Preferably, the exhaust outlet 11103 is formed at the top of the housing 111 to prevent the kitchen waste in the processing chamber 11101 from being discharged along with the hot and humid exhaust gas, and also to prevent the exhaust outlet 11103 from being blocked by kitchen waste. Also preferably, the first feed inlet 11102 is formed at the top of the housing 111 so that kitchen waste can be introduced into the processing chamber 11101.

[0040] Furthermore, the box 111 also has a first discharge port 11105 communicating with the processing chamber 11101, the first discharge port 11105 being used to discharge the products after the fermentation of kitchen waste.

[0041] Preferably, the first discharge port 11105 is formed at the bottom of the box 111 so that the products after the fermentation of kitchen waste can be discharged.

[0042] refer to Figures 3 to 4 The processing box 11 further includes a partition 112, which is installed in the processing chamber 11101 and divides the processing chamber 11101 into a supporting part 111011 and a water collection part 111012. The first feed inlet 11102 is connected to the supporting part 111011, and the first water outlet 11104 is connected to the water collection part 111012.

[0043] The separator 112 has at least one set of through holes 11201, and the supporting portion 111011 communicates with the water collection portion 111012 through the through holes 11201. The separator 112 is configured to drain the kitchen waste introduced into the supporting portion 111011 through the first feed inlet 11102, so that the wastewater can be introduced into the water collection portion 111012 through the through holes 11201 and finally discharged through the first outlet 11104, so as to control the moisture content of the kitchen waste within a predetermined range for subsequent fermentation.

[0044] Preferably, the separator 112 is plate-shaped and is installed near the bottom of the box 111. In this case, the sewage in the kitchen waste in the bearing part 111011 can enter the water accumulation part 111012 through the through hole 11201 under its own gravity.

[0045] As deformable, the partition 112 is implemented as a tube, the partition 112 is connected to the two side walls of the box 111, and at least part of the through hole 11201 is formed at the bottom of the partition 112 so that the sewage in the kitchen waste in the bearing part 111011 can enter the water accumulation part 111012 through the through hole 11201 under its own gravity.

[0046] In one embodiment, the through holes 11201 are distributed throughout the separator 112 to increase the drainage efficiency of wastewater from kitchen waste within the carrying portion 111011.

[0047] refer to Figures 3 to 4 The processing component 10 includes a stirring assembly 12, which is installed in the housing 111 and held in the supporting part 111011 to stir the kitchen waste in the supporting part 111011, so that the kitchen waste remains loose, which is conducive to draining the sewage in the kitchen waste and also conducive to fermenting the kitchen waste.

[0048] The stirring assembly 12 includes a rotating shaft 121 and at least one stirring element 122. The rotating shaft 121 is mounted on the bearing portion 111011, and the stirring element 122 is located on the bearing portion 111011 and mounted on the rotating shaft 121. The rotating shaft 121 can drive the stirring element 122 to rotate together to stir the kitchen waste in the bearing portion 111011.

[0049] The stirring element 122 extends towards the inner wall of the housing 111 from one end away from the rotating shaft 121, forming at least one churning surface 12201 at its end. The churning surface 12201 forms a predetermined angle with the cross section of the housing 111 perpendicular to the axial direction of the rotating shaft 121. Thus, when the stirring element 122 is rotated by the rotating shaft 121, it agitates the kitchen waste over a large area, causing it to churn within the supporting portion 111011, thereby promoting fermentation.

[0050] Preferably, multiple stirring elements 122 are provided and distributed at intervals, so that multiple stirring elements 122 can simultaneously stir kitchen waste in different positions within the bearing portion 111011, ensuring that all kitchen waste can be stirred.

[0051] The processing component 10 has an air inlet 101, which is connected to the processing chamber 11101. The air inlet 101 is used to introduce dry hot air into the processing chamber 11101.

[0052] The rotating shaft 121 has a connecting channel 12101 and at least one exhaust port 12102, the exhaust port 12102 is connected to the connecting channel 12101, and the exhaust port 12102 is connected to the bearing portion 111011.

[0053] Preferably, the air inlet 101 is formed on the rotating shaft 121 and communicates with the communicating channel 12101. The air inlet 101 is used to introduce dry hot air into the communicating channel 12101. The communicating channel 12101 is configured to guide the dry hot air to the exhaust port 12102 and distribute it into the supporting portion 111011, thereby providing a fermentation environment for the kitchen waste in the supporting portion 111011. At the same time, the stirring member 122 stirs the kitchen waste to ensure that the kitchen waste comes into full contact with the dry hot air, so as to promote the fermentation of the kitchen waste and ensure that the kitchen waste can be fully fermented.

[0054] It is worth mentioning that the air inlet 101 is configured to be connected to an oxygen supply device. At this time, the air inlet 101 can supply dry and hot air to the bearing part 111011 while also supplementing oxygen, thereby controlling the oxygen content in the bearing part 111011 and forming aerobic fermentation.

[0055] Those skilled in the art will understand that the air inlet 101 is formed in the housing 111, at which time dry and hot air can be directly introduced into the bearing portion 111011 through the air inlet 101, thereby providing the environment required for fermentation of the kitchen waste in the bearing portion 111011.

[0056] To enable those skilled in the art to understand this embodiment, in at least one embodiment and the corresponding drawings below, only the example of the air inlet 101 being formed on the rotating shaft 121 and connected to the communication channel 12101 is described. Those skilled in the art should know that this is not a limitation of the present invention.

[0057] Preferably, multiple exhaust ports 12102 are provided, and the multiple exhaust ports 12102 are spaced apart. The dry and hot air in the connecting channel 12101 can be evenly distributed from the multiple exhaust ports 12102 into the bearing portion 111011, so that the kitchen waste in the bearing portion 111011 is heated evenly.

[0058] Preferably, the outer wall of the box 111 is made of heat-insulating material to prevent the processing chamber 11101 from exchanging heat with the outside, thereby providing a suitable fermentation temperature for the kitchen waste in the processing chamber 11101.

[0059] Preferably, the rotating shaft 121 passes through both side walls of the housing 111, and the air inlet 101 is located outside the housing 111 so as to supply dry hot air to the rotating shaft 121.

[0060] The stirring assembly 12 further includes a driving member 123, on which the rotating shaft 121 is mounted, and the driving member 123 is configured to drive the rotating shaft 121 to rotate.

[0061] Preferably, the drive element 123 is implemented as a motor.

[0062] refer to Figure 1 The distributed kitchen waste treatment equipment also includes a low-temperature heat pump 20, which is connected to the air inlet 101 of the treatment component 10 via a pipeline. The low-temperature heat pump 20 is configured to introduce dry hot air into the treatment chamber 11101.

[0063] Preferably, the low-temperature heat pump 20 is connected to the rotating shaft 121 via a pipeline, and the low-temperature heat pump 20 is configured to introduce dry hot air into the rotating shaft 121 so that the dry hot air can be discharged to the bearing part 111011 through the connecting channel 12101 and the exhaust port 12102.

[0064] The low-temperature heat pump 20 has a hot air outlet 201, an air inlet 202, an exhaust gas inlet 203, and an exhaust gas outlet 204. The hot air outlet 201 is connected to the air inlet 101 via a pipeline, the air inlet 202 is connected to the outside, and the exhaust gas inlet 203 is connected to the exhaust gas outlet 11103 via a pipeline. The low-temperature heat pump 20 is configured to utilize the heat from the humid exhaust gas introduced through the exhaust gas inlet 203 and the heat energy generated by its own operation to convert the air and humid exhaust gas introduced through the air inlet 202 into dry hot air, which is then discharged through the hot air outlet 201, introduced through the air inlet 101 into the connecting channel 12101, and discharged through the exhaust port 12102 into the bearing portion 111011, thereby supplying dry hot air to the kitchen waste in the bearing portion 111011. The exhaust outlet 204 is used to discharge the cold, dry exhaust gas generated from the treatment of the humid and hot exhaust gas by the low-temperature heat pump 20. In this way, the heat of the humid and hot exhaust gas is used to heat the air, realizing the reuse of the heat of the humid and hot exhaust gas, reducing power consumption, and saving energy and protecting the environment.

[0065] The low-temperature heat pump 20 also has a cold water outlet 205, which is used to discharge condensate generated by the treatment of hot and humid exhaust gas by the low-temperature heat pump 20.

[0066] refer to Figure 1The distributed kitchen waste treatment equipment also includes a crushing and dehydration device 30, which is connected to the low-temperature heat pump 20 via a pipeline. The low-temperature heat pump 20 is configured to introduce condensate into the crushing and dehydration device 30 to remove oil and salt from the kitchen waste inside the crushing and dehydration device 30, so that the kitchen waste can be fully fermented and the fermented product can be used directly as organic fertilizer.

[0067] It is worth mentioning that the condensate required by the crushing and dehydration device 30 is obtained by the low-temperature heat pump 20 from the treatment of the humid and hot exhaust gas discharged from the box 111. Since the condensate has a predetermined temperature, it can remove oil and salt from the kitchen waste. At this time, there is no need to use hot water, so as to realize water recycling, increase the utilization rate of humid and hot exhaust gas, save costs, and reduce wastewater production.

[0068] The crushing and dehydrating device 30 includes a second inlet 301, a second outlet 302, a water inlet 303, and a second water outlet 304. The second inlet 301 is used to introduce kitchen waste. The water inlet 303 is connected to the cold water outlet 205 via a pipeline, so that the condensate in the low-temperature heat pump 20 can be guided through the cold water outlet 205 to the water inlet 303 to remove oil and salt from the kitchen waste. The crushing and dehydrating device 30 is configured to crush the kitchen waste introduced through the second inlet 301 to reduce its size for fermentation. Simultaneously, the crushing and dehydrating device 30 can agitate the condensate introduced through the water inlet 303 with the kitchen waste to further promote the removal of oil and salt from the kitchen waste. The second outlet 304 is used to discharge wastewater from the process of removing oil and salt from kitchen waste. The crushing and dewatering device 30 is configured to dewater the kitchen waste while discharging wastewater from the second outlet 304, thereby removing residual wastewater and reducing the water content of the kitchen waste. The second discharge port 302 is connected to the first inlet port 11102 via a pipeline. The second discharge port 302 is used to introduce kitchen waste that has been crushed, dewatered, and de-oiled by the crushing and dewatering device 30 into the first inlet port 11102.

[0069] refer to Figure 1 The distributed food waste treatment equipment further includes a feeding device 40, which is connected to the crushing and dewatering device 30 via a pipeline. The feeding device 40 is configured to guide food waste into the crushing and dewatering device 30. The feeding device 40 has a first inlet 401 and a first outlet 402. The first inlet 401 is used to introduce food waste, and the first outlet 402 is connected to a second inlet 301 via a pipeline, so that the first outlet 402 can guide the food waste to the second inlet 301.

[0070] refer to Figure 1 The distributed kitchen waste treatment equipment also includes a sewage treatment device 50, which is connected to the crushing and dewatering device 30 and the tank 111 via pipelines. The sewage treatment device 50 is used to treat the sewage discharged from the crushing and dewatering device 30 and the treatment tank 11 to meet the sewage discharge requirements.

[0071] The wastewater treatment device 50 has at least one second inlet 501 and one second outlet 502. The second inlet 501 is connected to the first outlet 11104 and the second outlet 304 via a pipeline, so that wastewater discharged from the first outlet 11104 and the second outlet 304 can be introduced into the second inlet 501 for treatment by the wastewater treatment device 50. The second outlet 502 is used to discharge the treated wastewater.

[0072] refer to Figure 1 The distributed kitchen waste treatment equipment also includes a conveying device 60, which is installed on the pipeline between the crushing and dewatering device 30 and the housing 111. The conveying device 60 is configured to guide the kitchen waste discharged from the crushing and dewatering device 30, which has undergone crushing, dewatering and oil and salt removal treatment, into the housing 111.

[0073] The conveying device 60 has a third inlet 601 and a third outlet 602. The third inlet 601 is connected to the second outlet 302 via a pipeline, and the third outlet 602 is connected to the first inlet 11102 via a pipeline. The conveying device 60 is configured to convey kitchen waste introduced through the third inlet 601 out of the third outlet 602 and into the first inlet 11102.

[0074] Preferably, the conveying device 60 is inclined to form a high end and a low end, the third inlet 601 is formed at the low end, and the third outlet 602 is formed at the high end. During the process of conveying the kitchen waste introduced by the third inlet 601 out of the third outlet 602, the sewage in the kitchen waste is concentrated at the low end of the conveying device 60 due to its own gravity, so as to further reduce the water content of the kitchen waste guided to the first feed inlet 11102.

[0075] refer to Figure 1 The distributed kitchen waste treatment equipment also includes a fan 70, which is installed on the pipeline between the low-temperature heat pump 20 and the treatment component 10. The fan 70 is configured to guide the dry hot air generated by the low-temperature heat pump 20 into the treatment chamber 11101 to accelerate the circulation of dry hot air.

[0076] The fan 70 has a fourth inlet 701 and a fourth outlet 702. The fourth inlet 701 is connected to the hot air outlet 201 through a pipeline, and the fourth outlet 702 is connected to the air inlet 101 through a pipeline, so that the dry hot air in the low temperature heat pump 20 can be introduced into the fourth inlet 701 through the hot air outlet 201, and then exported through the fourth outlet 702 and enter the processing chamber 11101 through the air inlet 101.

[0077] refer to Figure 1 The distributed kitchen waste treatment equipment also includes an exhaust gas filter 80, which is installed on the pipeline between the housing 111 and the low-temperature heat pump 20. The exhaust gas filter 80 is configured to filter the humid and hot exhaust gas discharged from the housing 111, thereby purifying the humid and hot exhaust gas, and guiding the filtered humid and hot exhaust gas to the low-temperature heat pump 20.

[0078] The exhaust gas filter 80 has a fifth inlet 801 and a fifth outlet 802. The fifth inlet 801 is connected to the exhaust gas outlet 11103 via a pipeline, so that the humid and hot exhaust gas in the housing 111 can be discharged from the exhaust gas outlet 11103 and guided to the fifth inlet 801 for filtration by the exhaust gas filter 80. The fifth outlet 802 is connected to the exhaust gas inlet 203 via a pipeline, and the fifth outlet 802 is used to guide the humid and hot exhaust gas filtered by the exhaust gas filter 80 to the low-temperature heat pump 20.

[0079] refer to Figure 1 The distributed kitchen waste treatment equipment also includes a deodorization device 90, which is connected to the low-temperature heat pump 20 via a pipeline. The deodorization device 90 is used to purify the cold and dry exhaust gas discharged by the low-temperature heat pump 20.

[0080] The deodorization device 90 has a sixth inlet 901 and a sixth outlet 902. The sixth inlet 901 is connected to the exhaust gas outlet 204 via a pipeline, so that the cold, dry exhaust gas in the low-temperature heat pump 20 can be guided from the exhaust gas outlet 204 to the sixth inlet 901. The sixth outlet 902 is connected to the outside environment and is used to discharge the exhaust gas purified by the deodorization device 90.

[0081] refer to Figures 2 to 3 The distributed kitchen waste treatment equipment also includes a stirring auxiliary component 100, which is installed on the rotating shaft 121 to assist the rotating shaft 121 in rotating.

[0082] The stirring auxiliary component 100 includes a speed reducer 110, which is installed between the drive member 123 and the rotating shaft 121. The speed reducer 110 is used to transmit the torque between the drive member 123 and the rotating shaft 121 and match the rotation speed.

[0083] The stirring auxiliary component 100 further includes a bearing seat 120, through which the rotating shaft 121 is mounted on the housing 111. The bearing seat 120 is used to support the rotating shaft 121 and reduce the friction between the rotating shaft 121 and the housing 111.

[0084] The stirring auxiliary component 100 further includes a slip ring 130. The rotating shaft 121 is connected to the pipeline installed on the fourth outlet 702 of the blower 70 through the slip ring 130. The slip ring 130 is used to prevent the pipeline connected to the fourth outlet 702 from rotating together with the rotating shaft 121.

[0085] refer to Figure 2 The distributed kitchen waste treatment equipment further includes a temperature sensor 200 and a controller 300. The temperature sensor 200 is installed in the housing 111 and is at least partially located in the treatment chamber 11101. The temperature sensor 200 is used to monitor the temperature inside the treatment chamber 11101. The temperature sensor 200 is communicatively connected to the controller 300. The low-temperature heat pump 20 is controllably connected to the controller 300. The controller 300 is configured to control the temperature of the dry hot air generated by the low-temperature heat pump 20 based on the feedback from the temperature sensor 200, so that the low-temperature heat pump 20 can provide dry hot air at the actual required temperature to the treatment chamber 11101.

[0086] Specifically, when the temperature sensor 200 detects that the temperature inside the processing chamber 11101 is lower than a predetermined range, the temperature sensor 200 converts the temperature signal into an electrical signal and transmits it to the controller 300. The controller 300 controls the low-temperature heat pump 20 to increase the temperature of the dry hot air generated during operation, so that after the dry hot air is guided out of the low-temperature heat pump 20 by the fan 70 and directed to the rotating shaft 121, the dry hot air can be discharged into the processing chamber 11101 through the connecting channel 12101 and the exhaust port 12102, thereby increasing the temperature inside the processing chamber 11101.

[0087] The distributed kitchen waste treatment equipment includes an oxygen content analyzer 400, which is installed in the housing 111 and at least partially located in the treatment chamber 11101. The oxygen content analyzer 400 is used to monitor the oxygen content in the treatment chamber 11101. The oxygen content analyzer 400 is communicatively connected to the controller 300. A valve is installed on the pipeline connecting the air inlet 202 and the pipeline between the exhaust gas outlet 204 and the sixth inlet 901. The valve is controllably connected to the controller 300. The controller 300 is configured to control the operation of the valve based on feedback from the oxygen content analyzer 400 to control whether air flows through the air inlet 202 and whether exhaust gas flows through the exhaust gas outlet 204.

[0088] Specifically, when the oxygen content analyzer 400 detects that the oxygen content in the processing chamber 11101 is lower than a predetermined value, the oxygen content analyzer 400 feeds back an electrical signal to the controller 300. The controller 300 controls the two valves to open the air inlet 202 and connect the exhaust gas outlet 204 to the sixth inlet 901, so that air enters the low-temperature heat pump 20 through the air inlet 202, thereby supplementing oxygen to the dry hot air generated by the low-temperature heat pump 20 so that the kitchen waste in the chamber 111 can ferment. At the same time, the cold dry exhaust gas generated by the low-temperature heat pump 20 is discharged through the exhaust gas outlet 204 to balance the pressure in the low-temperature heat pump 20.

[0089] The following is a proposed method for operating a distributed food waste treatment device, including the following steps:

[0090] (A) The fermentation of kitchen waste in the box 111 produces hot and humid exhaust gas, which is discharged from the exhaust gas outlet 11103 and enters the low-temperature heat pump 20 through the exhaust gas inlet 203.

[0091] (B) The low-temperature heat pump 20 uses the temperature of the humid waste gas and the heat energy generated by its own operation to convert the air and humid waste gas entering through the air inlet 202 into dry hot air. The dry hot air is discharged from the hot air outlet 201 and discharged into the processing chamber 11101 through the air inlet 101, providing the environment required for fermentation of the kitchen waste in the processing chamber 11101.

[0092] (C) The low-temperature heat pump 20 utilizes the temperature of the hot and humid waste gas to convert the water vapor in the hot and humid waste gas into condensate. The condensate is discharged through the cold water outlet 205 and enters the crushing and dehydration device 30 through the water inlet 303 to remove the oil and salt from the kitchen waste in the crushing and dehydration device 30. At the same time, the crushing and dehydration device 30 crushes the kitchen waste. Finally, the kitchen waste in the crushing and dehydration device 30 that has undergone oil and salt removal and crushing and dehydration treatment is discharged through the second discharge port 302 and enters the processing chamber 11101 through the first feed port 11102.

[0093] Furthermore, the operating method of the distributed kitchen waste treatment equipment also includes the following steps:

[0094] (a) Kitchen waste is fed into the crushing and dewatering device 30 by the feeding device 40, and the crushing and dewatering device 30 crushes and dewaters the kitchen waste.

[0095] (b) The crushing and dewatering device 30 directs the wastewater from the kitchen waste to the sewage treatment device 50 after removing oil and salt. The kitchen waste that has undergone oil and salt removal and crushing and dewatering is then transported by the conveying device 60 to the carrying part 111011.

[0096] (c) The separator 112 drains the kitchen waste that has been treated to remove oil and salt and crush and dehydrate, so that the wastewater remaining in the kitchen waste can be directed from the first outlet 11104 to the sewage treatment device 50.

[0097] (d) The wastewater treatment device 50 treats the wastewater and discharges wastewater that meets the discharge standards.

[0098] Furthermore, the operating method of the distributed kitchen waste treatment equipment also includes the following steps: the fan 70 guides the dry hot air in the low-temperature heat pump 20 to the treatment chamber 11101 to promote the flow of dry hot air.

[0099] Furthermore, the operating method of the distributed kitchen waste treatment equipment also includes the following steps: the filter 80 filters the humid and hot exhaust gas that is guided from the housing 111 to the low-temperature heat pump 20 to purify the humid and hot exhaust gas.

[0100] Furthermore, the working method of the distributed kitchen waste treatment equipment also includes the following steps: the deodorization device 90 purifies the cold and dry exhaust gas discharged by the low-temperature heat pump 20 so that the cold and dry exhaust gas meets the actual emission requirements.

[0101] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the invention. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments; any variations or modifications can be made to the implementation of the present invention without departing from these principles.

Claims

1. A distributed food waste treatment apparatus, characterized by, The distributed kitchen garbage treatment device comprises: a treatment component, which comprises a treatment box, the treatment box comprises a box body, the box body has a treatment cavity, a first feeding port and a waste gas outlet, the first feeding port and the waste gas outlet are both communicated with the treatment cavity, the first feeding port is used for guiding kitchen garbage into the treatment cavity, the treatment cavity provides a fermentation site for the kitchen garbage, the waste gas outlet is used for discharging wet and hot waste gas generated by fermentation of the kitchen garbage in the treatment cavity, the treatment component has an air inlet, the air inlet is communicated with the treatment cavity, and the air inlet is used for guiding dry and hot air into the treatment cavity; a low-temperature heat pump, which has a hot gas outlet, an air inlet, a waste gas inlet, a waste gas outlet and a cold water outlet, the hot gas outlet is communicated with the air inlet through a pipeline, the air inlet is communicated with the outside, the waste gas inlet is communicated with the waste gas outlet through a pipeline, the low-temperature heat pump is arranged to be capable of converting air guided into the air inlet and the wet and hot waste gas into dry and hot air by using heat of the wet and hot waste gas guided into the waste gas inlet and heat energy generated by self-operation of the low-temperature heat pump, and guiding the dry and hot air into the air inlet through the hot gas outlet, the waste gas outlet is used for discharging cold and dry waste gas generated by treatment of the wet and hot waste gas by the low-temperature heat pump, and the cold water outlet is used for discharging condensed water generated by treatment of the wet and hot waste gas by the low-temperature heat pump; a crushing and dewatering device, which comprises a second feeding port, a second discharging port, a water inlet and a second water outlet, the second feeding port is used for guiding kitchen garbage, the water inlet is communicated with the cold water outlet through a pipeline, so that the condensed water in the low-temperature heat pump can be guided into the water inlet through the cold water outlet to remove oil and salt in the kitchen garbage, the crushing and dewatering device is arranged to be capable of crushing the kitchen garbage guided into the second feeding port and stirring the condensed water guided into the water inlet and the kitchen garbage, the second water outlet is used for discharging sewage after the kitchen garbage removal operation, the crushing and dewatering device is arranged to be capable of dewatering the kitchen garbage while discharging the sewage through the second water outlet, and the second discharging port is communicated with the first feeding port through a pipeline, and the second discharging port is used for guiding the kitchen garbage, which is crushed, dewatered and has oil and salt removed by the crushing and dewatering device, into the first feeding port.

2. The distributed food waste treatment apparatus according to claim 1, wherein The treatment component comprises a stirring assembly, the stirring assembly is mounted in the treatment cavity, the stirring assembly comprises a rotating shaft and at least one stirring piece, the stirring piece is mounted on the rotating shaft, the rotating shaft can drive the stirring piece to rotate together to stir the kitchen garbage in the treatment cavity, the rotating shaft has a communication channel and at least one air outlet, the air inlet is formed in the rotating shaft, the air outlet and the air inlet are both communicated with the communication channel, the air inlet is used for guiding dry and hot air into the communication channel, and the communication channel is arranged to be capable of guiding the dry and hot air to the air outlet and distributing the dry and hot air in the treatment cavity through the air outlet.

3. The distributed food waste treatment apparatus according to claim 1, wherein The box further has a first water outlet and a first material outlet, both of which are communicated with the processing cavity, the first water outlet is used for discharging sewage in the kitchen garbage in the processing cavity, and the first material outlet is used for discharging products after fermentation of the kitchen garbage. The processing box further comprises a partition piece, which is installed in the processing cavity and separates the processing cavity into a bearing part and an accumulated water part, the first feeding port is communicated with the bearing part, the first water outlet is communicated with the accumulated water part, and the partition piece has at least one group of through holes, the bearing part is communicated with the accumulated water part through the through holes, and the partition piece is arranged to drain water from the kitchen garbage introduced into the bearing part by the first feeding port, so that the sewage can be introduced into the accumulated water part through the through holes and discharged from the first water outlet.

4. The distributed food waste treatment apparatus according to claim 3, wherein The distributed kitchen garbage processing equipment further comprises a feeding device, which is communicated with the crushing and dewatering device through a pipeline. The feeding device has a first inlet and a first outlet, the first inlet is used for introducing kitchen garbage, and the first outlet is communicated with the second feeding port through a pipeline. The feeding device is arranged to introduce the kitchen garbage into the crushing and dewatering device. The distributed kitchen garbage processing equipment further comprises a sewage treatment device, which is communicated with the crushing and dewatering device and the box through a pipeline. The sewage treatment device has at least one second inlet and a second outlet. The second inlet is communicated with the first water outlet and the second water outlet through a pipeline. The sewage treatment device is arranged to treat sewage discharged from the first water outlet and the second water outlet. The second outlet is used for discharging treated sewage.

5. The distributed food waste treatment apparatus according to claim 4, wherein The distributed kitchen garbage processing equipment further comprises a conveying device, which is installed on the pipeline between the crushing and dewatering device and the box. The conveying device has a third inlet and a third outlet. The third inlet is communicated with the second material outlet through a pipeline. The third outlet is communicated with the first feeding port through a pipeline. The conveying device is arranged to convey the kitchen garbage introduced into the third inlet out of the third outlet and into the first feeding port.

6. The distributed food waste treatment apparatus according to claim 5, wherein The distributed kitchen garbage processing equipment further comprises a fan, which is installed on the pipeline between the low-temperature heat pump and the processing member. The fan has a fourth inlet and a fourth outlet. The fourth inlet is communicated with the hot gas outlet through a pipeline. The fourth outlet is communicated with the gas inlet through a pipeline. The fan is arranged to guide dry hot air generated by the low-temperature heat pump to be discharged from the hot gas outlet and introduced into the processing cavity through the gas inlet.

7. The distributed food waste treatment apparatus according to claim 6, wherein The distributed kitchen garbage treatment equipment further comprises a waste gas filter installed on the pipeline between the box and the low-temperature heat pump, the waste gas filter having a fifth inlet and a fifth outlet, the fifth inlet being communicated with the waste gas outlet through a pipeline, the waste gas filter being arranged to filter the wet hot waste gas led out by the waste gas outlet, the fifth outlet being communicated with the waste gas inlet through a pipeline, the fifth outlet being used to lead the wet hot waste gas filtered by the waste gas filter to the low-temperature heat pump, the distributed kitchen garbage treatment equipment further comprising a deodorization device communicated with the low-temperature heat pump through a pipeline, the deodorization device having a sixth inlet and a sixth outlet, the sixth inlet being communicated with the waste gas outlet through a pipeline, so that the cold dry waste gas in the low-temperature heat pump can be led to the sixth inlet from the waste gas outlet, the deodorization device being used to purify the cold dry waste gas discharged by the low-temperature heat pump, the sixth outlet being communicated with the outside, and being used to discharge the waste gas purified by the deodorization device.

8. The distributed food waste treatment apparatus according to claim 7, wherein The distributed kitchen garbage treatment equipment further comprises a temperature sensor and a controller, the temperature sensor being installed on the box and at least partially located in the treatment cavity, the temperature sensor being used to monitor the temperature in the treatment cavity, the temperature sensor being communicatively connected to the controller, the low-temperature heat pump being controllably connected to the controller, the controller being arranged to control the temperature of the dry hot air generated by the low-temperature heat pump according to the feedback of the temperature sensor.

9. The distributed food waste treatment apparatus according to claim 8, wherein The distributed kitchen garbage treatment equipment further comprises an oxygen content measuring instrument, the oxygen content measuring instrument being installed on the box and at least partially located in the treatment cavity, the oxygen content measuring instrument being used to monitor the oxygen content in the treatment cavity, the oxygen content measuring instrument being communicatively connected to the controller, the pipeline communicated with the air inlet, the pipeline between the waste gas outlet and the sixth inlet each being provided with a valve, the valves being controllably connected to the controller, the controller being arranged to control the valves to control whether the air is led from the air inlet and whether the waste gas is led from the waste gas outlet according to the feedback of the oxygen content measuring instrument.

10. The method of claim 1 to 9, wherein the distributed kitchen waste processing apparatus is characterized by, The working method of the distributed kitchen garbage treatment equipment comprises the following steps: (A) The kitchen garbage in the box is fermented to generate wet hot waste gas, the wet hot waste gas being discharged from the waste gas outlet and led into the low-temperature heat pump through the waste gas inlet; (B) The low-temperature heat pump converts the air led in through the air inlet and the wet hot waste gas into dry hot air by using the temperature of the wet hot waste gas and the heat energy generated by the operation of the low-temperature heat pump, the dry hot air being discharged from the hot gas outlet and discharged into the treatment cavity through the air inlet, so as to provide the kitchen garbage in the treatment cavity with the environment required for fermentation; (C) the low-temperature heat pump utilizes the temperature of the wet and hot exhaust gas to convert the water vapor in the wet and hot exhaust gas into condensed water, the condensed water is discharged through the cold water outlet and enters the crushing and dewatering device through the water inlet to remove oil and salt in the kitchen garbage in the crushing and dewatering device, at the same time, the crushing and dewatering device crushes the kitchen garbage, and finally the kitchen garbage treated by the oil and salt removal and crushing and dewatering in the crushing and dewatering device is discharged from the second discharge port and enters the processing cavity through the first feeding port.

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