On-site treatment equipment for kitchen waste with multiple drying devices

Abstract

The present invention provides an on-site treatment device for kitchen waste with multiple drying devices, comprising a feeding extrusion module, a spiral material distribution device, an oil-water separation device and multiple drying devices; the spiral material distribution device comprises a driving device, a material distribution barrel and a spiral pushing assembly; the driving device is arranged on one side of the material distribution barrel, one end of the spiral pushing assembly is connected to the driving device, and the other end is horizontally mounted in the material distribution barrel along the axial direction of the material distribution barrel; a feeding port and multiple material outlets are arranged on the material distribution barrel; the material outlet of the feeding extrusion module is connected to the feeding port of the material distribution barrel; the feeding ports of multiple drying devices are respectively connected to the multiple material outlets of the material distribution barrel; the drying chambers of the multiple drying devices are connected in sequence through gas pipelines; the inlet of the oil-water separation device is connected to the oil-water outlet of the feeding extrusion module; so as to provide an on-site treatment device for kitchen waste, which can reasonably distribute and treat a large amount of kitchen waste, increase treatment efficiency, reduce energy consumption and occupy a reasonable area.

Description

Technical Field

[0001] The invention relates to the technical field of kitchen waste treatment, and in particular to an on-site kitchen waste treatment device with multiple drying devices. Background Art

[0002] Among the existing on-site kitchen waste treatment equipment, the equipment with a rated daily treatment capacity of less than 2 tons is generally made into an integrated structure, and the equipment with a rated daily treatment capacity of more than 2 tons is made into a split structure. The equipment with a split structure is generally divided into a kitchen waste pretreatment device, an oil-water separation device, a material drying device and other units that are independently manufactured according to different functions. Due to the numerous functions, the entire set of equipment occupies a large area, and the control system also needs to be designed and laid out separately. This not only has a very high equipment manufacturing cost, but also brings great inconvenience during the use and management process.

[0003] Moreover, when dealing with a food waste volume of more than 2 tons, a whole set of processing procedures of the processing equipment results in a huge waste of energy. Therefore, it is an urgent task for those skilled in the art to provide a food waste processing equipment that can reasonably distribute and process a large amount of food waste, increase processing efficiency, and reduce energy consumption. Summary of the invention

[0004] The purpose of the present invention is to provide an on-site treatment device for kitchen waste which can reasonably distribute and treat a large amount of kitchen waste, increase treatment efficiency, reduce energy consumption and occupy a reasonable area.

[0005] To achieve the above-mentioned purpose, the present invention provides a multi-drying device on-site treatment equipment for food waste, comprising a feeding extrusion module, a spiral material distribution device, an oil-water separation device and a plurality of drying devices;

[0006] The spiral material distributing device comprises a driving device, a material distributing barrel and a spiral pushing assembly; the driving device is arranged on one side of the material distributing barrel, one end of the spiral pushing assembly is connected to the driving device, and the other end is horizontally mounted in the material distributing barrel along the axial direction of the material distributing barrel; the material distributing barrel is provided with a feeding port and a plurality of discharging ports;

[0007] The discharge port of the feeding extrusion module is connected to the feed port of the material distribution barrel; the feed ports of multiple drying devices are respectively connected to the multiple discharge ports of the material distribution barrel;

[0008] The drying chambers of the plurality of drying devices are sequentially connected through gas pipelines;

[0009] The inlet of the oil-water separation device is connected to the oil-water outlet of the feeding extrusion module; the inner cavity of the oil-water separation device is provided with a waste heat circulation pipe, and the air inlet of the waste heat circulation pipe is connected to the drying chamber of the drying device located at the end through a gas pipeline.

[0010] Preferably, the multiple discharge ports of the material distribution cylinder are connected to the feed ports of multiple drying devices in a one-to-one correspondence.

[0011] Preferably, the material distributing barrel has two discharge ports, which are respectively disposed at two ends of the material distributing barrel.

[0012] Preferably, there are two drying devices, namely a first drying device and a second drying device, and the feed inlets of the first drying device and the second drying device are respectively connected to the discharge outlets at both ends of the distributing barrel.

[0013] Preferably, the driving device can drive the spiral pushing assembly to rotate forward or reverse, and the driving device is an external motor.

[0014] Preferably, the gas pipeline is preset with a filter, a vacuum pump and an electric valve.

[0015] Preferably, it further comprises a condensing device, wherein the air inlet of the condensing device is connected with the exhaust port of the waste heat circulation pipe through a recovery pipe; and the recovery pipe is pre-set with an electric valve and a vacuum pump.

[0016] Preferably, it also includes a high-pressure water pump, which is connected to the drain outlet of the condensing device and sprays condensed water onto the kitchen waste in the feeding extrusion module.

[0017] Preferably, it further comprises a frame, wherein the frame is formed by overlapping a plurality of metal rods, and the metal rods are fixed by bolts or welding; and positioning pin holes are preset on the metal rods;

[0018] The feeding extrusion module, the spiral material distribution device, the drying device, the oil-water separation device, the condensing device and the high-pressure water pump are all detachably mounted on the frame through the cooperation between the pins and the positioning pin holes;

[0019] The feeding extrusion module is mounted above the spiral material distribution device; the spiral material distribution device is mounted above the drying device and the oil-water separation device.

[0020] Preferably, it also includes a weighing and feeding device and a PLC control system;

[0021] The weighing and feeding device comprises a feeding guide rail and a material loading box; the feeding guide rail is mounted on the side of the frame, and the material loading box is mounted on the feeding guide rail through a mechanical transmission component; the feeding end of the feeding guide rail extends to the feeding port of the feeding extrusion module;

[0022] The PLC control system is signal-connected with the feeding extrusion module, the spiral feeding device, the plurality of drying devices, the oil-water separation device, the condensing device, the high-pressure water pump, the electric valve, the vacuum pump and the weighing feeding device.

[0023] Preferably, the feeding and extruding module comprises a feeding barrel, a squeezing and pushing assembly, a screen and a material cutting and crushing device;

[0024] The top of the upper material barrel is a feed port, the bottom of the upper material barrel is an oil and water outlet, and a discharge port is provided on the side wall of the upper material barrel; the squeezing and pushing assembly is mounted in the upper material barrel, and the material pushing direction of the squeezing and pushing assembly is facing the discharge port of the upper material barrel; the discharge port of the upper material barrel is connected with the feed port of the cutting and crushing device through a pipeline; the discharge port of the cutting and crushing device is connected with the feed port of the distributing barrel;

[0025] The screen is arranged between the squeezing and pushing component and the oil-water outlet.

[0026] Preferably, electric valve plates are provided at the discharge port of the loading barrel and the discharge ports at both ends of the distributing barrel.

[0027] Preferably, the squeezing and pushing assembly and the spiral pushing assembly both include a rotating shaft and spiral blades; the spiral blades are arranged on the outer surface of the rotating shaft, and the rotating shaft is connected to an external motor.

[0028] Preferably, the drying device comprises a barrel, a spiral auger assembly, a drying unit, a driving unit and a transmission unit;

[0029] The bottom of the barrel includes at least one concave channel; the spiral auger assembly is installed in the barrel, and the spiral auger assembly is correspondingly arranged above each of the concave channels; there is a predetermined gap between the side wall of the concave channel and the rotation trajectory of the spiral auger assembly;

[0030] The spiral auger assembly is connected to the driving unit through the transmission unit;

[0031] The drying unit is fixed on the outer wall of the barrel.

[0032] Preferably, the spiral auger assembly comprises a rotating shaft and spiral blades; the spiral blades are arranged at intervals on the outer surface of the rotating shaft;

[0033] The spiral auger assembly further includes a cutter disc; the cutter disc is fixed on the outer surface of the rotating shaft and is located between the spiral blades.

[0034] Preferably, the bottom of the barrel is formed of two concave channels; the number of the spiral auger components is two;

[0035] Wherein, the spiral auger assembly includes a driving spiral auger shaft system and a driven spiral auger shaft system;

[0036] The input end of the driven auger shaft system is connected to the input end of the active auger shaft system through a gear meshing assembly;

[0037] The transmission unit is connected to the input end of the active auger shaft system through a gear meshing assembly.

[0038] Preferably, the drying unit includes a drying cylinder, heat transfer oil and a heating component; the upper end of the drying cylinder is open; the open end of the drying cylinder is fixed to the barrel; a closed storage cavity is formed between the drying cylinder and the barrel; the heat transfer oil is located in the storage cavity; and the heating component heats the heat transfer oil.

[0039] Compared with the prior art, the advantages of the present invention are:

[0040] 1. The present invention adopts a double drying device structure of multiple drying devices, and rationally distributes several tons of food waste to multiple drying devices through a spiral material distribution device. Multiple drying devices work together for parallel processing, thereby ensuring the processing volume of food waste and ensuring the processing efficiency of food waste.

[0041] 2. The chambers of the multiple drying devices, oil-water separation devices and condenser of the present invention are interconnected in sequence through pipelines; the hot steam between the multiple drying devices is mutually conducted, and the hot steam energy is reused; the hot steam in the drying chamber of the drying device placed at the end can be conducted to the oil-water separation device to heat the oil-water separation device to ensure the oil-water separation efficiency; after the heat is fully utilized, the hot steam in the oil-water separation device can be conducted to the condenser to condense into water, and the water is transported to the feeding extrusion module through a high-pressure water pump to perform preliminary cleaning of the kitchen materials, thereby fully achieving the effect of energy saving and emission reduction.

[0042] 3. The spiral material distributor, the first drying device, the second drying device, the oil-water separator, the condensing device and the high-pressure water pump of the present invention are all detachably mounted on the frame through the cooperation between the pins and the positioning pin holes, thereby realizing the reasonable arrangement of the various major components in the processing equipment. In the face of the traditional split-type kitchen waste treatment equipment, the present invention utilizes the supporting function of the frame and fully utilizes the volume of the vertical space, so that the overall footprint of the kitchen waste treatment equipment becomes smaller, which is convenient for the transportation and reasonable layout of the equipment; at the same time, the detachable cooperation between the pins and the positioning pin holes also facilitates the disassembly and assembly of the various module components of the equipment.

[0043] 4. In the present invention, the structural design of the spiral auger assembly and the concave barrel can fully stir the food waste to make it evenly distributed, and the food waste will not accumulate under the rotating shaft, so the drying effect is good and the purpose of energy saving is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a front view of a kitchen waste on-site treatment device with multiple drying devices according to one embodiment of the present invention;

[0045] Figure 2 It is a side view of an on-site treatment device for kitchen waste with multiple drying devices according to an embodiment of the present invention.

[0046] Figure 3 It is an overall structural diagram of a first drying device and a second drying device in an on-site treatment equipment for kitchen waste with multiple drying devices in one embodiment of the present invention. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be further described below.

[0048] Embodiment 1:

[0049] like Figure 1 and Figure 2 As shown, the present invention proposes an on-site treatment device for kitchen waste with multiple drying devices, including a feeding and extrusion module 1, a spiral material distribution device 2, an oil-water separation device 5 and multiple drying devices;

[0050] The spiral material distributing device 2 comprises a driving device, a material distributing barrel 21 and a spiral pushing assembly 22; the driving device is arranged on one side of the material distributing barrel 21, one end of the spiral pushing assembly 22 is connected to the driving device, and the other end is horizontally mounted in the material distributing barrel 21 along the axial direction of the material distributing barrel 21; the material distributing barrel 21 is provided with a feed port and a plurality of discharge ports;

[0051] The discharge port of the feeding extrusion module 1 is connected to the feed port of the material distribution barrel 21; the feed ports of the multiple drying devices are respectively connected to the multiple discharge ports of the material distribution barrel 21;

[0052] The drying chambers of the multiple drying devices are sequentially connected through gas pipelines;

[0053] The inlet of the oil-water separation device 5 is connected to the oil-water outlet of the feeding extrusion module 1; the inner cavity of the oil-water separation device 5 is provided with a waste heat circulation pipe 6, and the air inlet of the waste heat circulation pipe 6 is connected to the drying chamber of the drying device arranged at the end through a gas pipeline.

[0054] In this embodiment, the multiple discharge ports of the material distribution barrel 21 are connected to the feed ports of the multiple drying devices in a one-to-one correspondence.

[0055] In this embodiment, the material distributing barrel 21 has two discharging ports, which are respectively disposed at two ends of the material distributing barrel 21 .

[0056] In this embodiment, there are two drying devices, namely a first drying device 3 and a second drying device 4. The feed ports of the first drying device 3 and the second drying device 4 are respectively connected to the discharge ports at both ends of the distribution barrel 21.

[0057] In this embodiment, the driving device can drive the screw pushing assembly 22 to rotate forward or reverse, and the driving device is an external motor.

[0058] In this embodiment, a filter, a vacuum pump and an electric valve are preset on the gas pipeline.

[0059] In this embodiment, a condensing device 7 is further included. The air inlet of the condensing device 7 is connected to the exhaust port of the waste heat circulation pipe 6 through a recovery pipeline; an electric valve and a vacuum pump are preset on the recovery pipeline.

[0060] In this embodiment, a high-pressure water pump 8 is further included. The high-pressure water pump 8 is connected to the drain outlet of the condensation device 7 and sprays condensed water onto the kitchen waste in the feeding and extrusion module 1 .

[0061] In this embodiment, a frame 9 is also included. The frame 9 is formed by overlapping a plurality of metal rods. The metal rods are fixed by bolts or welding. The metal rods are pre-set with positioning pin holes.

[0062] The feeding extrusion module 1, the spiral material distribution device 2, the drying device, the oil-water separation device 5, the condensing device 7 and the high-pressure water pump 8 are all detachably mounted on the frame 9 through the cooperation between the pins and the positioning pin holes;

[0063] The feeding extrusion module 1 is mounted above the spiral material distribution device 2; the spiral material distribution device 2 is mounted above the drying device and the oil-water separation device 5, so that the oil, water and kitchen waste materials can be discharged by their own gravity.

[0064] In this embodiment, a weighing and feeding device 10 and a PLC control system 15 are also included; the PLC control system 15 is used to control the operation between the modules.

[0065] The weighing and feeding device 10 includes a feeding guide rail and a loading box; the feeding guide rail is mounted on the side of the frame 9, and the loading box is mounted on the feeding guide rail through a mechanical transmission component; the feeding end of the feeding guide rail extends to the feeding port of the feeding extrusion module 1;

[0066] The PLC control system 15 is signal-connected with the feeding and extruding module 1 , the spiral material distribution device 2 , multiple drying devices, the oil-water separation device 5 , the condensing device 7 , the high-pressure water pump 8 , the electric valve, the vacuum pump and the weighing and feeding device 10 .

[0067] In this embodiment, the feeding and extruding module 1 includes a feeding barrel 11, a pressing and pushing assembly 12, a screen 13 and a material cutting and crushing device 14;

[0068] The top of the upper barrel 11 is a feed port, the bottom of the upper barrel 11 is an oil and water outlet, and a discharge port is provided on the side wall of the upper barrel 11; the squeezing and pushing assembly 12 is mounted in the upper barrel 11, and the material pushing direction of the squeezing and pushing assembly 12 is directly facing the discharge port of the upper barrel 11; the discharge port of the upper barrel 11 is connected to the feed port of the cutting and crushing device 14 through a pipeline; the discharge port of the cutting and crushing device 14 is connected to the feed port of the dividing barrel 21;

[0069] The screen 13 is installed between the squeezing and pushing assembly 12 and the oil and water outlet.

[0070] In this embodiment, electric valve plates are provided at the discharge ports at both ends of the discharge port and the distribution port of the loading barrel 11.

[0071] In this embodiment, the squeezing and pushing assembly 12 and the spiral pushing assembly 22 both include a rotating shaft and spiral blades; the spiral blades are arranged on the outer surface of the rotating shaft, and the rotating shaft is connected to an external motor.

[0072] like Figure 3 As shown, in this embodiment, the drying device includes a barrel 31, a spiral auger assembly, a drying unit, a driving unit and a conveying unit; the bottom of the barrel 31 includes at least one concave channel; the spiral auger assembly is installed in the barrel 31, and a spiral auger assembly is correspondingly provided above each concave channel; there is a predetermined gap between the side wall of the concave channel and the rotation trajectory of the spiral auger assembly; the spiral auger assembly is connected to the driving unit through the conveying unit; and the drying unit is fixed on the outer wall of the barrel 31.

[0073] Unlike the traditional method of installing a stirring shaft in the barrel 31, in this embodiment, a concave channel, such as a U-shape, is formed at the bottom of the barrel 31, and a spiral auger assembly is provided above the bottom of each concave channel, and the reserved gap between the spiral blades in the spiral auger assembly and the U-shaped bottom is ensured to be maintained in a small range, so as to avoid the formation of a stirring dead zone between the spiral auger assembly and the bottom of the barrel 31 during the rotating stirring process, resulting in the accumulation of materials at the bottom of the barrel 31, which cannot be driven by the spiral blades of the spiral auger assembly to rotate and stir, thereby avoiding insufficient stirring and affecting the drying effect Unlike the traditional method of installing a stirring shaft in the barrel 31, in the present embodiment, a concave channel, such as a U-shape, needs to be formed at the bottom of the barrel 31, and a spiral auger assembly is provided above the bottom of each concave channel, and the reserved gap between the spiral blades in the spiral auger assembly and the U-shaped bottom is ensured to be maintained in a smaller range, so as to avoid the formation of a stirring dead zone between the spiral auger assembly and the bottom of the barrel 31 during the rotation and stirring process, resulting in the accumulation of materials at the bottom of the barrel 31, which cannot be driven by the spiral blades of the spiral auger assembly to rotate and stir, thereby avoiding insufficient stirring and affecting the drying effect.

[0074] In this embodiment, the spiral auger assembly includes a rotating shaft and spiral blades; spiral blades are arranged at intervals on the outer surface of the rotating shaft; the spiral auger assembly further includes a cutter disc; the cutter disc is fixed on the outer surface of the rotating shaft and is located between the spiral blades; since the spiral blades only serve to stir the food waste and cannot crush or break it, at least one cutter disc is arranged at the interval between the spiral blades. The cutter disc is also arranged on the outer surface of the rotating shaft and can rotate with the rotation of the rotating shaft. The other side of the cutter disc has a crushing blade, so that large pieces or agglomerates in the food waste can be crushed to improve the efficiency and effect of squeezing and dehydrating. It is conducive to stirring and rapid drying.

[0075] In this embodiment, the bottom of the barrel 31 is formed of two concave channels; there are two spiral auger assemblies;

[0076] The spiral auger assembly includes a driving spiral auger shaft system and a driven spiral auger shaft system;

[0077] The input end of the driven auger shaft system is connected to the input end of the active auger shaft system through a gear meshing assembly; the transmission unit is connected to the input end of the active auger shaft system through the gear meshing assembly.

[0078] In order to avoid the situation that the spiral blades and the cutter discs on the two rotating shafts overlap and collide when they rotate, the spiral blades and the cutter discs on the two rotating shafts can be arranged at intervals or staggered, that is, the rotation phases are different or staggered, that is, when the spiral blades and the cutter disc on one rotating shaft rotate and are located on one side, the spiral blades and the cutter disc on the other rotating shaft rotate and are located on the other side, or the phases are staggered, and it is only necessary to avoid the collision of the spiral blades on different rotating shafts. Preferably, it is necessary to ensure that the spiral auger assembly forms an intermittently arranged auger shape. In addition, the arrangement of the spiral blades and the cutter discs on different rotating shafts can also be set according to specific circumstances. In order to avoid the situation that the spiral blades and the cutter discs on the two rotating shafts overlap and collide when they rotate, the spiral blades and the cutter discs on the two rotating shafts can be arranged at intervals or staggered, that is, the rotation phases are different or staggered, that is, when the spiral blades and the cutter disc on one rotating shaft rotate and are located on one side, the spiral blades and the cutter disc on the other rotating shaft rotate and are located on the other side, or the phases are staggered, and it is only necessary to avoid the collision of the spiral blades on different rotating shafts. Preferably, it is necessary to ensure that the spiral auger assembly forms an intermittently arranged auger shape. In addition, the spiral blades and cutterhead arrangements on different rotating shafts can also be arranged according to specific circumstances.

[0079] In this embodiment, the drying unit includes a drying cylinder, heat transfer oil and a heating component; the upper end of the drying cylinder is open; the open end of the drying cylinder is fixed to the barrel 31; a closed storage chamber is formed between the drying cylinder and the barrel 31; the heat transfer oil is located in the storage chamber; and the heating component heats the heat transfer oil.

[0080] In this embodiment, the working principle steps of embodiment 1 are as follows:

[0081] 1. The kitchen waste is poured into the feeding bucket 11 of the feeding and extrusion through the weighing feeding device 10. At this time, the electric valve plate on the discharge port of the feeding bucket 11 is in a closed state; the high-pressure water pump 8 is started, and the high-pressure water pump 8 sprinkles clean water on the kitchen waste to clean the kitchen waste and preliminarily separate the oil and salt in the kitchen waste.

[0082] 2. Start the squeezing and pushing component 12. Through the rotation of the squeezing and pushing component 12, the spiral blades stir the food waste materials and continuously push the food waste materials toward the gate plate at the discharge port of the upper material barrel 11, so as to squeeze the food waste and perform preliminary solid-liquid separation on the food waste. The liquid passes through the screen 13 and is discharged into the oil-water separation device 5 through the oil-water outlet of the upper material barrel 11.

[0083] 3. Open the gate at the kitchen waste material discharge port, and discharge the kitchen waste from the discharge port into the material cutting and crushing device 14 through the squeezing and pushing component 12; the material cutting and crushing device 14 crushes the kitchen waste such as large bones and discharges them into the spiral dividing device 2.

[0084] 4. Start the spiral pushing assembly 22 in the spiral material distribution device 2, so that the spiral pushing assembly 22 can rotate in the forward direction, close the valve plate between the first drying device 3 and the material distribution cylinder 21; open the valve plate between the first drying device 33 and the material distribution cylinder 21, at this time, the spiral blades on the spiral pushing assembly 22 drive the food waste to be discharged into the first drying device 3 for drying operation, at the same time, turn on the heating device and the spiral auger assembly 32 in the first drying device 33, and dry the food waste in the first drying device 3.

[0085] 5. When the detection device preset in the first drying device 3 detects that the food waste reaches a predetermined amount, the valve plate between the material distribution cylinder 21 and the first drying device 3 is closed, and the valve plate between the material distribution cylinder 21 and the second drying device 4 is opened. At this time, the spiral pushing assembly 22 is reversely driven by the external store, so that the spiral blade drives the food waste to be discharged into the second drying device 4; at the same time, the heating device and the spiral auger assembly 32 in the second drying device 4 are turned on to dry the food waste in the second drying device 4.

[0086] 6. While the second drying device 4 is being fed, since the first drying device 3 has been drying the materials for a period of time, the kitchen waste materials in the first drying device 3 emit a large amount of hot steam. When the pressure detection device in the first drying device 3 detects that the hot steam has reached a certain saturation value, the valve on the gas pipeline and the vacuum pump are opened. Under the drive of the vacuum pump, the hot steam is filtered through the filter on the gas pipeline and then transmitted to the second drying device 4. Since the material in the second drying device 4 is fed slowly, the second drying device 4 is preheated by the hot steam in the first drying device 3. The preheated second drying device 4 can save a lot of energy when drying the materials.

[0087] 7. When the residual temperature of the hot steam circulating in the second drying device 4 is not enough for drying, the drying process is completed, or the pressure detection device preset in the second drying device 4 detects the upper limit of the steam pressure, the vacuum pump and the electric valve on the gas pipeline are turned on, and the hot steam in the second drying device 4 is filtered through the filter and enters the residual heat circulation pipe 6 in the oil-water separation device 5 to heat the inside of the oil-water separation device 5; so that the oil-water mixture is maintained between 20℃-37℃, ensuring a good oil-water separation effect.

[0088] 8. When the temperature of the hot steam in the waste heat circulation pipe 6 drops again, the electric valve and vacuum pump on the recovery pipe are opened to discharge the hot steam into the condensing device 7 to condense into water. If necessary, the high-pressure water pump 8 is turned on to pump out the condensed water to perform preliminary cleaning on the loaded kitchen waste; the hot steam is fully utilized to achieve the effect of energy saving and emission reduction.

[0089] Embodiment 2:

[0090] The overall structure of Example 2 is similar to that of Example 1, except that Example 2 includes multiple drying devices, and the drying chambers of the multiple drying devices are interconnected in sequence through gas pipes. The working principle is the same as the working principle of the two drying devices in Example 1, except that the residual temperature gas in the drying chamber of the first drying device will be discharged into the drying chamber of the second drying device, and the residual temperature gas in the drying chamber of the second drying device will be discharged into the third drying device, until the residual temperature gas in the drying chamber of the last drying device is discharged into the oil-water separation device 55 and the condensation device 77 in sequence, until it is finally flushed out by the high-pressure water pump 88.

[0091] The above is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any technician in the relevant technical field, without departing from the scope of the technical solution of the present invention, makes any form of equivalent replacement or modification to the technical solution and technical content disclosed in the present invention, which does not depart from the content of the technical solution of the present invention and still falls within the protection scope of the present invention.

Claims

1. An on-site treatment equipment for kitchen waste with multiple drying devices, characterized in that: It includes a feeding extrusion module, a spiral material distribution device, an oil-water separation device and multiple drying devices; The spiral material distributing device comprises a driving device, a material distributing barrel and a spiral pushing assembly; the driving device is arranged on one side of the material distributing barrel, one end of the spiral pushing assembly is connected to the driving device, and the other end is horizontally mounted in the material distributing barrel along the axial direction of the material distributing barrel; the material distributing barrel is provided with a feeding port and a plurality of discharging ports; The discharge port of the feeding extrusion module is connected to the feed port of the material distribution barrel; the feed ports of multiple drying devices are respectively connected to the multiple discharge ports of the material distribution barrel; The drying chambers of the plurality of drying devices are sequentially connected through gas pipelines; The inlet of the oil-water separation device is connected to the oil-water outlet of the feeding extrusion module; the inner cavity of the oil-water separation device is provided with a waste heat circulation pipe, and the air inlet of the waste heat circulation pipe is connected to the drying chamber of the drying device disposed at the end through a gas pipeline; The driving device drives the spiral pushing assembly to rotate forward or reverse, and the driving device is an external motor; The method for using the on-site kitchen waste treatment device with multiple drying devices comprises the following steps: S1: introducing the kitchen waste into a feeding barrel through a weighing feeding device, at which time the electric valve on the discharge port of the feeding barrel is in a closed state, and starting a high-pressure water pump to clean the kitchen waste and preliminarily separate the oil and salt in the kitchen waste; S2: Start the squeezing and pushing component to rotate its spiral blades and continuously push the kitchen waste materials toward the gate plate of the discharge port, thereby completing the squeezing of the kitchen waste materials and completing the preliminary solid-liquid separation. The liquid in the kitchen waste materials is discharged into the oil-water separation device through the oil-water outlet of the loading barrel; S3: opening the gate at the kitchen waste material discharge port, and discharging the solids of the kitchen waste material from the discharge port into the material cutting and crushing device through the squeezing and pushing component, and the material cutting and crushing device crushes the solids and then discharges them into the spiral material distribution device; S4: starting the spiral pushing component of the spiral material distributing device, and opening the valve plate between the first drying device and the material distributing cylinder, discharging the kitchen waste into the first drying device through the spiral pushing component, and turning on the heating device and the spiral auger component of the first drying device to dry the kitchen waste; S5: When the detection device in the first drying device detects that the kitchen waste material reaches a predetermined amount, the valve plate between the distribution cylinder and the first drying device is closed, and the valve plate between the distribution cylinder and the second drying device is opened, and the kitchen waste material is discharged into the second drying device through the external store reverse driving spiral pushing component, and the kitchen waste material is dried by the heating device and the spiral auger component of the drying device; S6: When the pressure monitoring device in the first drying device detects that the hot steam has reached the saturation value, the valve on the gas pipeline and the vacuum pump are opened, and the hot steam passes through the filter and enters the second drying device to preheat the second drying device that is being fed; S7: When the residual temperature of the hot steam circulating in the second drying device is insufficient for drying, the drying process is completed, or the pressure detection device preset in the second drying device detects the upper limit of the steam pressure, the hot steam in the second drying device is filtered by the filter and then enters the residual heat circulation pipe in the oil-water separation device by opening the vacuum pump and the electric valve on the gas pipeline, and the inside of the oil-water separation device is heated, so that the oil-water mixture is maintained between 20°C and 37°C, thereby ensuring the oil-water separation effect; S8: When the temperature of the hot steam in the waste heat circulation pipe drops again, the electric valve and vacuum pump of the recovery pipe are opened to discharge the hot steam into the condensing device to condense into water. The condensed water is used for preliminary cleaning of the loaded food waste.

2. The on-site treatment equipment for kitchen waste with multiple drying devices according to claim 1, characterized in that: The multiple discharge ports of the material distribution cylinder are connected to the feed ports of the multiple drying devices in a one-to-one correspondence.

3. The on-site kitchen waste treatment equipment with multiple drying devices according to claim 2, characterized in that: The material distributing barrel has two discharging ports, which are respectively arranged at two ends of the material distributing barrel.

4. The on-site treatment equipment for kitchen waste with multiple drying devices according to claim 3, characterized in that: There are two drying devices, namely a first drying device and a second drying device. The feed inlets of the first drying device and the second drying device are respectively connected to the discharge outlets at both ends of the material distribution barrel.

5. The on-site kitchen waste treatment equipment with multiple drying devices according to claim 1, characterized in that: The gas pipeline is preset with a filter, a vacuum pump and an electric valve.

6. The on-site kitchen waste treatment equipment with multiple drying devices according to claim 1, characterized in that: It also includes a condensing device, the air inlet of the condensing device is connected with the exhaust port of the waste heat circulation pipe through a recovery pipeline; the recovery pipeline is preset with an electric valve and a vacuum pump.

7. The on-site treatment equipment for kitchen waste with multiple drying devices according to claim 6, characterized in that: It also includes a high-pressure water pump, which is connected to the drain outlet of the condensing device and sprays condensed water onto the kitchen waste in the feeding and extruding module.

8. The on-site treatment equipment for kitchen waste with multiple drying devices according to claim 7, characterized in that: The machine also includes a frame, which is formed by overlapping a plurality of metal rods, and the metal rods are fixed by bolts or welding; and positioning pin holes are preset on the metal rods; The feeding extrusion module, the spiral material distribution device, the drying device, the oil-water separation device, the condensing device and the high-pressure water pump are all detachably mounted on the frame through the cooperation between the pins and the positioning pin holes; The feeding extrusion module is mounted above the spiral material distribution device; the spiral material distribution device is mounted above the drying device and the oil-water separation device.

9. The on-site kitchen waste treatment equipment with multiple drying devices according to claim 8, characterized in that: It also includes a weighing and feeding device and a PLC control system; The weighing and feeding device comprises a feeding guide rail and a material loading box; the feeding guide rail is mounted on the side of the frame, and the material loading box is mounted on the feeding guide rail through a mechanical transmission component; the feeding end of the feeding guide rail extends to the feeding port of the feeding extrusion module; The PLC control system is signal-connected with the feeding extrusion module, the spiral feeding device, the plurality of drying devices, the oil-water separation device, the condensing device, the high-pressure water pump, the electric valve, the vacuum pump and the weighing feeding device.

10. The on-site kitchen waste treatment equipment with multiple drying devices according to claim 1, characterized in that: The feeding and extrusion module includes a feeding barrel, a squeezing and pushing assembly, a screen and a material cutting and crushing device; The top of the loading barrel is a feed port, the bottom of the loading barrel is an oil and water outlet, and a discharge port is provided on the side wall of the loading barrel; the squeezing and pushing assembly is mounted in the loading barrel, and the material pushing direction of the squeezing and pushing assembly is facing the discharge port of the loading barrel; the discharge port of the loading barrel is connected to the feed port of the cutting and crushing device through a pipeline; the discharge port of the cutting and crushing device is connected to the feed port of the distributing barrel; The screen is arranged between the squeezing and pushing component and the oil-water outlet.

11. The on-site kitchen waste treatment equipment with multiple drying devices according to claim 10, characterized in that: Electric valve plates are provided at the discharge port of the loading barrel and the discharge ports at both ends of the distributing barrel.

12. The on-site kitchen waste treatment equipment with multiple drying devices according to claim 11, characterized in that: The squeezing and pushing assembly and the spiral pushing assembly both include a rotating shaft and a spiral blade; the spiral blade is arranged on the outer surface of the rotating shaft, and the rotating shaft is connected to an external motor.

13. The on-site kitchen waste treatment equipment with multiple drying devices according to claim 1, characterized in that: The drying device comprises a barrel, a spiral auger assembly, a drying unit, a driving unit and a transmission unit; The bottom of the barrel includes at least one concave channel; the spiral auger assembly is installed in the barrel, and the spiral auger assembly is correspondingly arranged above each of the concave channels; there is a predetermined gap between the side wall of the concave channel and the rotation trajectory of the spiral auger assembly; The spiral auger assembly is connected to the driving unit through the transmission unit; and the drying unit is fixed on the outer wall of the barrel.

14. The on-site kitchen waste treatment equipment with multiple drying devices according to claim 13, characterized in that: The spiral auger assembly comprises a rotating shaft and spiral blades; the spiral blades are arranged at intervals on the outer surface of the rotating shaft; The spiral auger assembly further includes a cutter disc; the cutter disc is fixed on the outer surface of the rotating shaft and is located between the spiral blades.

15. The on-site kitchen waste treatment equipment with multiple drying devices according to claim 13, characterized in that: The bottom of the barrel is provided with two concave channels; the spiral auger components are provided with two; Wherein, the spiral auger assembly includes a driving spiral auger shaft system and a driven spiral auger shaft system; The input end of the driven auger shaft system is connected to the input end of the active auger shaft system through a gear meshing assembly; The transmission unit is connected to the input end of the active auger shaft system through a gear meshing assembly.

16. The on-site kitchen waste treatment equipment with multiple drying devices according to claim 13, characterized in that: The drying unit includes a drying cylinder, heat transfer oil and a heating component; the upper end of the drying cylinder is open; the open end of the drying cylinder is fixed to the barrel; a closed storage cavity is formed between the drying cylinder and the barrel; the heat transfer oil is located in the storage cavity; and the heating component heats the heat transfer oil.

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