A kitchen waste and kitchen waste oil combined treatment system and a combined treatment method thereof

Abstract

The application discloses a kind of kitchen garbage and kitchen waste oil combined processing system and its combined processing method, belong to garbage processing field.The combined processing system includes: kitchen waste oil unloading hopper, kitchen waste oil preliminary screening machine, kitchen waste oil heating tank, kitchen waste oil centrifuge feed pump, kitchen waste oil three-phase centrifuge, kitchen waste oil storage tank, kitchen waste oil delivery pump, kitchen unloading hopper, primary screening machine, filtrate tank, organic residue mixing tank, organic residue shearing machine, organic residue delivery pump, filtrate pump, secondary screening machine, heating pool, mixing pool, kitchen centrifuge feed pump and heating water pump, kitchen waste oil unloading hopper is used to receive kitchen waste oil, kitchen unloading hopper is used to receive kitchen garbage, heating water pump is used to deliver the liquid in heating pool after heating to filtrate tank and organic residue mixing tank.The application solves the problem of high cost and energy consumption of using two sets of processing system in prior art.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of garbage disposal, and particularly relates to a kitchen waste and kitchen waste oil combined treatment system and a combined treatment method thereof. BACKGROUND

[0002] Kitchen waste, i.e. leftover food materials from catering, is collected by catering practitioners and timely transported out for disposal. During the collection and temporary storage, the materials are inevitably mixed, including organic material-rich materials such as leftover food, leftover dishes and processing tailings, hard substances such as bones and shells, inorganic substances such as chopsticks, paper and broken porcelain, and a large amount of water and a small amount of oil. At present, kitchen waste in China is basically disposed of in a resourceful, reduced and harmless manner.

[0003] The oil in the garbage is partly the oil extracted from leftover food (commonly known as swill) in the kitchen through simple processing, and the oil used for frying food after being used for more than a certain number of times and being added with new oil for reuse. The other part of the kitchen waste oil is the kitchen waste oil in the sewer of urban hotels, which is strictly prohibited from entering the edible oil field. Both of these two parts of oil can be used to produce biodiesel or lubricating oil.

[0004] The prior art kitchen waste combined treatment system can only jointly treat the oil mixed in the kitchen waste and the kitchen waste residue, but cannot jointly treat the oil in the sewer of urban hotels, the oil mixed in the kitchen waste and the kitchen waste. The oil in the sewer of urban hotels needs to be treated by a separate treatment system, resulting in high cost and energy consumption of two sets of treatment systems. SUMMARY

[0005] The present application provides a kitchen waste and kitchen waste oil combined treatment system and a combined treatment method thereof, which can jointly treat the oil in the sewer of urban hotels, the oil mixed in the kitchen waste and the kitchen waste, so as to solve the problem of high cost and energy consumption of two sets of treatment systems in the prior art.

[0006] The technical scheme of the present application is as follows: a kitchen waste and kitchen waste oil combined treatment system comprises a kitchen waste oil unloading hopper, a kitchen waste oil primary screening machine, a kitchen waste oil heating tank, a kitchen waste oil centrifuge feed pump, a kitchen waste oil three-phase centrifuge, a kitchen waste oil storage tank, a kitchen waste oil delivery pump, a kitchen waste unloading hopper, a primary screening machine, a filtrate tank, an organic residue mixing tank, a first screw conveyor, an organic residue shearing machine, an organic residue delivery pump, a filtrate pump, a secondary screening machine, an organic residue extruding machine, a heating pool, a mixing pool, a kitchen centrifuge feed pump, a kitchen three-phase centrifuge, a second screw conveyor, a wastewater tank, a crude oil buffer tank, a wastewater delivery pump, a crude oil delivery pump and a heating water pump.

[0007] The kitchen waste oil preliminary screening machine is connected with the kitchen waste oil unloading hopper, the kitchen waste oil heating tank is connected with the kitchen waste oil preliminary screening machine, the kitchen waste oil centrifuge feed pump is connected with the kitchen waste oil heating tank, the kitchen waste oil three-phase centrifuge is connected with the kitchen waste oil centrifuge feed pump, the kitchen waste oil storage tank is connected with the kitchen waste oil three-phase centrifuge, the kitchen waste oil conveying pump is connected with the kitchen waste oil storage tank, the kitchen unloading hopper is connected with the kitchen waste oil preliminary screening machine and the kitchen waste oil three-phase centrifuge, the first screening machine and the filtrate tank are connected with the kitchen unloading hopper, the organic residue mixing tank and the first screw conveyor are connected with the first screening machine, the organic residue shearing machine is connected with the organic residue mixing tank, the organic residue conveying pump is connected with the organic residue shearing machine, the filtrate pump is connected with the filtrate tank, the second screening machine is connected with the organic residue conveying pump and the filtrate pump, the organic residue extruding machine and the heating pool are connected with the second screening machine, the mixing pool is connected with the organic residue extruding machine and the heating pool, the kitchen centrifuge feed pump is connected with the mixing pool, the kitchen three-phase centrifuge is connected with the kitchen centrifuge feed pump, the second screw conveyor is connected with the organic residue extruding machine and the kitchen three-phase centrifuge, the wastewater tank and the crude oil buffer tank are connected with the kitchen three-phase centrifuge, the wastewater conveying pump is connected with the wastewater tank, the crude oil conveying pump is connected with the crude oil buffer tank, and the heating water pump is connected with the heating pool.

[0008] The heating water pump is also connected with the filtrate tank and the organic residue mixing tank.

[0009] The kitchen waste oil preliminary screening machine comprises a liquid outlet end and a residue outlet end, the kitchen waste oil heating tank is connected with the liquid outlet end of the kitchen waste oil preliminary screening machine, and the kitchen unloading hopper is connected with the residue outlet end of the kitchen waste oil preliminary screening machine.

[0010] The kitchen waste oil three-phase centrifuge comprises an oil outlet end, a water outlet end and a residue outlet end, the kitchen waste oil storage tank is connected with the oil outlet end of the kitchen waste oil three-phase centrifuge, the filtrate tank is connected with the water outlet end of the kitchen waste oil three-phase centrifuge, and the kitchen unloading hopper is connected with the residue outlet end of the kitchen waste oil three-phase centrifuge.

[0011] The kitchen waste oil unloading hopper is used for receiving kitchen waste oil, the kitchen unloading hopper is used for receiving kitchen garbage, and the heating water pump is used for conveying the liquid heated in the heating pool into the filtrate tank and the organic residue mixing tank.

[0012] In further embodiments, steam coils are arranged in the kitchen waste oil unloading hopper, the kitchen waste oil heating tank and the kitchen waste oil storage tank, and the steam coils are used for heating the oil in the kitchen waste oil unloading hopper, the kitchen waste oil heating tank and the kitchen waste oil storage tank, so that the oil can be heated into a liquid state and conveniently conveyed.

[0013] In a further embodiment, the kitchen waste oil preliminary screening machine comprises a preliminary screening screw conveyor and a preliminary screening lining plate arranged below the preliminary screening screw conveyor.

[0014] The central axis of the preliminary screening screw conveyor is arranged obliquely upward at an angle of 15°-25° with the ground.

[0015] The preliminary screening lining plate is provided with a preliminary screening hole with a hole diameter of 5-10 mm.

[0016] The kitchen waste oil heating tank is connected with the preliminary screening lining plate of the kitchen waste oil preliminary screening machine, and the kitchen discharge hopper is connected with the discharge end of the preliminary screening screw conveyor of the kitchen waste oil preliminary screening machine.

[0017] In a further embodiment, the kitchen discharge hopper comprises a kitchen discharge shell, a kitchen discharge screw conveyor arranged in the kitchen discharge shell, and a kitchen discharge lining plate arranged below the kitchen discharge screw conveyor.

[0018] The central axis of the kitchen discharge screw conveyor is arranged obliquely upward at an angle of 15°-25° with the ground.

[0019] The kitchen discharge lining plate is provided with a liquid outlet hole, which is a long hole with a width of 5-10 mm and a length of 15-25 mm.

[0020] The filtrate tank is connected with the kitchen discharge lining plate, the primary screening machine is connected with the discharge end of the kitchen discharge lining plate screw conveyor, and the long hole can reduce the blockage rate.

[0021] In a further embodiment, the primary screening machine comprises a primary shell, a primary motor, a primary rotating drum, a primary guide plate, a primary sand removal tank, a primary sand lifting screw conveyor, and a primary overflow plate.

[0022] The primary motor is connected with the primary shell, the primary rotating drum is connected with the primary motor and arranged in the primary shell, the primary guide plate is arranged in the primary rotating drum, the primary sand removal tank is arranged at the bottom end of the shell, the primary sand lifting screw conveyor is arranged at the bottom end of the primary sand removal tank, and the primary overflow plate is connected with the primary sand removal tank.

[0023] The primary shell is provided with a feeding port, a large slag discharge port, and a small slag discharge port, the primary motor is arranged at the feeding port of the primary shell, the primary rotating drum and the primary guide plate are arranged between the feeding port and the large slag discharge port, and the primary sand removal tank is in communication with the small slag discharge port.

[0024] The primary sand removal tank is provided with a small slag inlet, a heavy slag outlet and an overflow port, the small slag inlet is communicated with the small slag outlet, the heavy slag outlet is communicated with the primary sand lifting screw, the primary overflow plate is arranged between the primary sand lifting screw and the overflow port, and the organic slag mixing tank is communicated with the overflow port.

[0025] The primary drum includes a primary support frame connected with a primary motor, and a plurality of primary sieve plates connected with the primary support frame, the primary guide plate is a spiral structure, the primary sieve plates are circumferentially distributed around the guide plate, the primary sieve plates are provided with primary filter holes, the primary sieve plates are used for screening small slag into the primary sand removal tank, the primary guide plate is used for guiding large slag to the large slag outlet, the central axis of the primary drum is arranged at an angle of 3°-5° upwardly with respect to the ground, and the size of the primary filter hole is between 25mm and 60mm.

[0026] The central axis of the primary sand lifting screw is arranged at an angle of 20°-40° upwardly with respect to the ground, the primary sand lifting screw is provided with a bottom end and a lifting end, the height of the lifting end is greater than that of the bottom end, and the lifting end of the primary sand lifting screw is communicated with the heavy slag outlet.

[0027] The first screw conveyor is communicated with the large slag outlet and the heavy slag outlet, and is used for conveying the large slag and the heavy slag in the small slag to the outside.

[0028] The overflow port of the primary sand removal tank is arranged at a position close to the bottom end of the primary sand lifting screw, the primary overflow plate is arranged between the bottom end of the primary sand lifting screw and the overflow port, the heavy slag in the small slag can be separated from the liquid, and the separation of the heavy slag in the large slag and the small slag and the light slag in the small slag is realized.

[0029] In a further embodiment, the primary sieve plate further includes a primary overflow pipe, the primary overflow pipe is communicated with the primary sand removal tank, and the height of the position where the primary overflow pipe is communicated with the primary sand removal tank is greater than the height of the overflow port.

[0030] The overflow tank is communicated with the primary overflow pipe, and the liquid and the small slag in the organic slag mixing tank and the sand removal tank can be output to the outside overflow tank when the material instantaneously increases

[0031] In a further embodiment, the primary sand removal tank is further provided with a hot water inlet, and a hot water pump is communicated with the hot water inlet, so that the hot water in the hot water pool can be introduced into the sand removal tank, the material can be sufficiently disturbed, and the heavy slag and the light slag can be effectively separated.

[0032] In a further embodiment, the secondary screening machine comprises a secondary housing, a secondary motor, a secondary drum and a secondary guide plate.

[0033] The secondary motor is connected with the secondary housing, the secondary drum is connected with the secondary motor, the secondary drum is arranged in the secondary housing, and the secondary guide plate is arranged in the secondary drum.

[0034] The secondary drum comprises a secondary support frame connected with the secondary motor, and a plurality of secondary sieve plates connected with the secondary support frame.

[0035] The secondary sieve plate is composed of a plurality of grid bars, adjacent grid bars are spaced apart by a predetermined distance to form secondary filtering holes, and the size of the secondary filtering holes is between 1mm and 2mm.

[0036] In a further embodiment, a straight jet steam heating device is arranged in the heating tank and the mixing tank.

[0037] The combined processing method of the kitchen waste and kitchen waste oil combined processing system according to the above embodiment comprises: a waste oil processing process in a sewer: after the kitchen waste oil unloading hopper receives the waste oil in the sewer, the waste oil is transported to the kitchen waste oil preliminary screening machine, and the waste oil sequentially passes through the kitchen waste oil preliminary screening machine, the kitchen waste oil heating tank, the kitchen waste oil centrifuge feed pump and the kitchen waste oil three-phase centrifuge, and after being processed by the kitchen waste oil three-phase centrifuge, the kitchen waste oil three-phase centrifuge transports the separated oil in the waste oil to the kitchen waste oil storage tank, and finally the kitchen waste oil is output to the outside through the kitchen waste oil delivery pump.

[0038] The kitchen waste processing process: after the kitchen unloading hopper receives the kitchen waste, the kitchen unloading hopper transports the residue in the kitchen waste to the primary screening machine, the kitchen unloading hopper transports the liquid mixed with oil and wastewater to the filtrate tank, and the filtrate pump transports the liquid mixed with oil and wastewater in the filtrate tank to the secondary screening machine.

[0039] The first screen machine transports the separated dregs to the first screw conveyor, the first screen machine transports the separated liquid mixed with organic dregs, oil and wastewater to the organic dregs mixing tank, the liquid in the organic dregs mixing tank is transported to the second screen machine through the organic dregs shearing machine and the organic dregs conveying pump, the second screen machine transports the separated dregs to the organic dregs extruder, the second screen machine transports the separated liquid mixed with oil and wastewater to the heating tank, the organic dregs extruder transports the liquid mixed with oil and wastewater to the mixing tank, the heating tank transports the liquid mixed with oil and wastewater to the mixing tank, the kitchen centrifuge feeding pump transports the liquid in the mixing tank to the kitchen three-phase centrifuge, the organic dregs extruder and the kitchen three-phase centrifuge transport the separated dregs to the second screw conveyor, the kitchen three-phase centrifuge transports the separated wastewater to the wastewater tank, the kitchen three-phase centrifuge transports the separated oil to the crude oil buffer tank, and the first screw conveyor and the second screw conveyor output the dregs to the outside, the wastewater conveying pump outputs the wastewater in the wastewater tank to the outside, and the crude oil conveying pump outputs the oil in the crude oil buffer tank to the outside.

[0040] In the process of treating the discarded oil in the sewer, the kitchen discarded oil preliminary screening machine transports the liquid mixed with fine dregs, oil and wastewater to the kitchen discarded oil heating tank, the kitchen discarded oil preliminary screening machine transports the large dregs to the kitchen unloading hopper, the kitchen discarded oil three-phase centrifuge transports the oil to the kitchen discarded oil storage tank, the kitchen discarded oil three-phase centrifuge transports the fine dregs to the kitchen unloading hopper, and the kitchen discarded oil three-phase centrifuge transports the wastewater to the filtrate tank.

[0041] In the process of treating the kitchen garbage, the heating tank heats the liquid mixed with wastewater and oil, and the heating pump transports the heated liquid to the filtrate tank and the organic dregs mixing tank.

[0042] The kitchen discarded oil unloading hopper receives the kitchen discarded oil, the kitchen unloading hopper receives the kitchen garbage, the kitchen discarded oil three-phase centrifuge is connected with the kitchen unloading hopper, and the kitchen discarded oil heating tank is connected with the kitchen discarded oil preliminary screening machine, so that the kitchen discarded oil treatment system and the kitchen garbage treatment system are combined, the dregs and wastewater in the kitchen discarded oil treatment system are transported to the kitchen garbage treatment system, the kitchen garbage treatment system is supplemented with water required for treating the kitchen garbage, the wastewater in the kitchen discarded oil treatment system is reused by the kitchen garbage treatment system, and the dregs in the kitchen discarded oil treatment system are further treated.

[0043] The liquid in the filtrate tank, the secondary screening machine and the organic residue extruding machine is transported to the heating pool and the mixing pool, and then the heated liquid in the heating pool is transported to the filtrate tank and the organic residue mixing tank by the heating water pump, so that the heated liquid in the liquid treatment system can be utilized, the solid-liquid separation of the kitchen waste is facilitated by the residue treatment system, the kitchen waste and the kitchen waste oil are jointly treated, and the problem of high cost and energy consumption due to the use of two sets of treatment systems in the prior art is solved. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 is the schematic diagram of the principle of the present application.

[0045] Figure 2 is the partial enlarged schematic diagram of the connection principle of the kitchen waste oil primary screening machine and its peripheral equipment of the present application.

[0046] Figure 3 is the partial enlarged schematic diagram of the connection principle of the primary screening machine and its peripheral equipment of the present application.

[0047] The reference signs shown in the figure are: kitchen waste oil unloading hopper 1, kitchen waste oil primary screening machine 2, kitchen waste oil heating tank 3, kitchen waste oil centrifuge feed pump 4, kitchen waste oil three-phase centrifuge 5, kitchen waste oil storage tank 6, kitchen waste oil conveying pump 7, kitchen waste unloading hopper 8, primary screening machine 9, filtrate tank 10, organic residue mixing tank 11, first screw conveyor 12, organic residue shearing machine 13, organic residue conveying pump 14, filtrate pump 15, secondary screening machine 16, organic residue extruding machine 17, heating pool 18, mixing pool 19, kitchen centrifuge feed pump 20, kitchen three-phase centrifuge 21, second screw conveyor 22, wastewater tank 23, crude oil buffer tank 24, wastewater conveying pump 25, crude oil conveying pump 26, heating water pump 27, primary screening screw conveyor 201, primary screening lining plate 202, kitchen unloading shell 801, kitchen unloading screw conveyor 802, kitchen unloading lining plate 803, primary shell 901, primary motor 902, primary rotating drum 903, primary flow guide plate 904, primary sand removal tank 905, primary sand lifting screw 906, primary overflow plate 907, primary overflow pipe 908. DETAILED DESCRIPTION

[0048] In the following description, a large number of specific details are given to provide a more thorough understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without one or more of these details. In other examples, some technical features known in the art are not described in order not to obscure the present application.

[0049] The application discloses a kitchen waste and kitchen waste oil combined treatment system and a combined treatment method thereof, which can jointly treat oil in a city hotel sewer, oil mixed in kitchen waste and kitchen waste, so as to solve the problem of high cost and energy consumption of two sets of treatment systems in the prior art.

[0050] The first embodiment,

[0051] As Figure 1 The kitchen waste and kitchen waste oil combined treatment system comprises a kitchen waste oil unloading hopper 1, a kitchen waste oil primary screening machine 2, a kitchen waste oil heating tank 3, a kitchen waste oil centrifuge feeding pump 4, a kitchen waste oil three-phase centrifuge 5, a kitchen waste oil storage tank 6, a kitchen waste oil conveying pump 7, a kitchen waste unloading hopper 8, a primary screening machine 9, a filtrate tank 10, an organic residue mixing tank 11, a first screw conveyor 12, an organic residue shearing machine 13, an organic residue conveying pump 14, a filtrate pump 15, a secondary screening machine 16, an organic residue extruding machine 17, a heating pool 18, a mixing pool 19, a kitchen centrifuge feeding pump 20, a kitchen three-phase centrifuge 21, a second screw conveyor 22, a wastewater tank 23, a crude oil buffer tank 24, a wastewater conveying pump 25, a crude oil conveying pump 26 and a heating water pump 27.

[0052] The kitchen waste oil primary screening machine 2 is connected with the kitchen waste oil unloading hopper 1, the kitchen waste oil heating tank 3 is connected with the kitchen waste oil primary screening machine 2, the kitchen waste oil centrifuge feeding pump 4 is connected with the kitchen waste oil heating tank 3, the kitchen waste oil three-phase centrifuge 5 is connected with the kitchen waste oil centrifuge feeding pump 4, the kitchen waste oil storage tank 6 is connected with the kitchen waste oil three-phase centrifuge 5, the kitchen waste oil conveying pump 7 is connected with the kitchen waste oil storage tank 6, the kitchen waste unloading hopper 8 is connected with the kitchen waste oil primary screening machine 2 and the kitchen waste oil three-phase centrifuge 5, the primary screening machine 9 and the filtrate tank 10 are connected with the kitchen waste unloading hopper 8, the organic residue mixing tank 11 and the first screw conveyor 12 are connected with the primary screening machine 9, the organic residue shearing machine 13 is connected with the organic residue mixing tank 11, the organic residue conveying pump 14 is connected with the organic residue shearing machine 13, the filtrate pump 15 is connected with the filtrate tank 10, the secondary screening machine 16 is connected with the organic residue conveying pump 14 and the filtrate pump 15, the organic residue extruding machine 17 and the heating pool 18 are connected with the secondary screening machine 16, the mixing pool 19 is connected with the organic residue extruding machine 17 and the heating pool 18, the kitchen centrifuge feeding pump 20 is connected with the mixing pool 19, the kitchen three-phase centrifuge 21 is connected with the kitchen centrifuge feeding pump 20, the second screw conveyor 22 is connected with the organic residue extruding machine 17 and the kitchen three-phase centrifuge 21, the wastewater tank 23 and the crude oil buffer tank 24 are connected with the kitchen three-phase centrifuge 21, the wastewater conveying pump 25 is connected with the wastewater tank 23, the crude oil conveying pump 26 is connected with the crude oil buffer tank 24, and the heating water pump 27 is connected with the heating pool 18.

[0053] The heating water pump 27 is also connected with the filtrate tank 10 and the organic residue mixing tank 11.

[0054] The kitchen waste oil and fat primary screening machine 2 comprises a liquid outlet end and a residue outlet end, the kitchen waste oil and fat heating tank 3 is connected with the liquid outlet end of the kitchen waste oil and fat primary screening machine 2, and the kitchen discharge hopper 8 is connected with the residue outlet end of the kitchen waste oil and fat primary screening machine 2.

[0055] As shown in Figure 1 and 2 The kitchen waste oil and fat primary screening machine 2 comprises a primary screening screw conveyor 201 and a primary screening lining plate 202 arranged below the primary screening screw conveyor 201, the central shaft of the primary screening screw conveyor 201 is arranged at an angle of 15°-25° with the ground, the primary screening lining plate 202 is provided with primary screening holes, the diameter of the primary screening holes is between 5-10 mm, the kitchen waste oil and fat heating tank 3 is connected with the primary screening lining plate 202 of the kitchen waste oil and fat primary screening machine 2, the kitchen discharge hopper 8 is connected with the discharge end of the primary screening screw conveyor 201 of the kitchen waste oil and fat primary screening machine 2, the primary screening holes are the liquid outlet end, and the discharge end of the primary screening screw conveyor 201 is the residue outlet end.

[0056] Through the primary screening screw conveyor 201 and the primary screening holes, the kitchen waste oil and fat can be preliminarily screened, so that the oil and fat with a size smaller than the primary screening holes is conveyed to the kitchen waste oil and fat heating tank 3, and the primary screening screw conveyor 201 can convey the residue with a size larger than the primary screening holes to the kitchen discharge hopper 8.

[0057] As shown in Figure 1 The kitchen waste oil and fat discharge hopper 1, the kitchen waste oil and fat heating tank 3 and the kitchen waste oil and fat storage tank 6 are provided with steam coils, and the steam coils are used for heating the oil and fat in the kitchen waste oil and fat discharge hopper 1, the kitchen waste oil and fat heating tank 3 and the kitchen waste oil and fat storage tank 6.

[0058] Through the steam coils, the oil and fat can be heated to a liquid state, so that the oil and fat is conveniently conveyed.

[0059] As shown in Figure 1 The kitchen waste oil and fat three-phase centrifuge 5 comprises an oil outlet end, a water outlet end and a residue outlet end, the kitchen waste oil and fat storage tank 6 is connected with the oil outlet end of the kitchen waste oil and fat three-phase centrifuge 5, the filtrate tank 10 is connected with the water outlet end of the kitchen waste oil and fat three-phase centrifuge 5, and the kitchen discharge hopper 8 is connected with the residue outlet end of the kitchen waste oil and fat three-phase centrifuge 5.

[0060] As shown in Figure 1 and 3The kitchen unloading hopper 8 includes a kitchen unloading shell 801, a kitchen unloading screw conveyor 802 arranged in the kitchen unloading shell 801, and a kitchen unloading lining plate 803 arranged below the kitchen unloading screw conveyor 802. The central axis of the kitchen unloading screw conveyor 802 is arranged at an angle of 15°-25° upwardly with respect to the ground. The kitchen unloading lining plate 803 is provided with a liquid outlet hole which is a long hole with a width of 5-10 mm and a length of 15-25 mm. The filtrate tank 10 is connected with the kitchen unloading lining plate 803. The first-stage screening machine 9 is connected with the discharge end of the kitchen unloading lining plate 803.

[0061] The kitchen unloading hopper 8 can perform primary screening on the mixture of kitchen waste and kitchen waste oil. The long hole can reduce the blocking rate. Oil, water and materials smaller than the liquid outlet hole enter the filtrate tank 10 through the liquid outlet hole. Materials larger than the liquid outlet hole are conveyed into the first-stage screening machine 9 by the kitchen unloading screw conveyor 802.

[0062] As shown in Figure 1 The second-stage screening machine 16 includes a second-stage shell, a second-stage motor, a second-stage drum and a second-stage guide plate. The second-stage motor is connected with the second-stage shell. The second-stage drum is connected with the second-stage motor and arranged in the second-stage shell. The second-stage guide plate is arranged in the second-stage drum. The second-stage drum includes a second-stage support frame connected with the second-stage motor and a plurality of second-stage sieve plates connected with the second-stage support frame. The second-stage sieve plate is composed of a plurality of grid bars. Adjacent grid bars are spaced apart by a predetermined distance to form second-stage filtering holes. The size of the second-stage filtering holes is between 1 mm and 2 mm.

[0063] The heating tank 18 and the mixing tank 19 are provided with direct steam heating devices. The direct steam heating devices can greatly improve the heating efficiency.

[0064] The kitchen waste oil unloading hopper 1 is used for receiving kitchen waste oil. The kitchen unloading hopper 8 is used for receiving kitchen waste. The heating water pump 27 is used for conveying the heated liquid in the heating tank 18 to the filtrate tank 10 and the organic residue mixing tank 11.

[0065] Working principle, the combined treatment method based on the combined treatment system of kitchen waste and kitchen waste oil includes:

[0066] The process of treating waste oil in the sewer:

[0067] The kitchen waste oil unloading hopper 1 receives the waste oil in the sewer and transports the waste oil to the kitchen waste oil primary screening machine 2. The waste oil sequentially passes through the kitchen waste oil primary screening machine 2, the kitchen waste oil heating tank 3, the kitchen waste oil centrifuge feed pump 4, and the kitchen waste oil three-phase centrifuge 5. The kitchen waste oil three-phase centrifuge 5 separates the oil from the waste oil and transports the oil to the kitchen waste oil storage tank 6. Finally, the kitchen waste oil is output to the outside world through the kitchen waste oil delivery pump 7.

[0068] Kitchen waste processing process:

[0069] The kitchen unloading hopper 8 receives the kitchen waste and transports the residue in the kitchen waste to the primary screening machine 9. The kitchen unloading hopper 8 transports the liquid mixed with oil and wastewater to the filtrate tank 10. The filtrate pump 15 transports the liquid mixed with oil and wastewater in the filtrate tank 10 to the secondary screening machine 16.

[0070] The primary screening machine 9 transports the separated residue to the first screw conveyor 12. The primary screening machine 9 transports the separated liquid mixed with organic residue, oil, and wastewater to the organic residue mixing tank 11. The liquid in the organic residue mixing tank 11 is transported to the secondary screening machine 16 through the organic residue shearing machine 13 and the organic residue delivery pump 14. The secondary screening machine 16 transports the separated residue to the organic residue extruder 17. The secondary screening machine 16 transports the separated liquid mixed with oil and wastewater to the heating pool 18. The organic residue extruder 17 transports the liquid mixed with oil and wastewater to the mixing pool 19. The heating pool 18 transports the liquid mixed with oil and wastewater to the mixing pool 19. The kitchen centrifuge feed pump 20 transports the liquid in the mixing pool 19 to the kitchen three-phase centrifuge 21. The organic residue extruder 17 and the kitchen three-phase centrifuge 21 transport the separated residue to the second screw conveyor 22. The kitchen three-phase centrifuge 21 transports the separated wastewater to the wastewater tank 23. The kitchen three-phase centrifuge 21 transports the separated oil to the crude oil buffer tank 24. The first screw conveyor 12 and the second screw conveyor 22 output the residue to the outside world. The wastewater delivery pump 25 outputs the wastewater in the wastewater tank 23 to the outside world. The crude oil delivery pump 26 outputs the oil in the crude oil buffer tank 24 to the outside world.

[0071] In the process of processing waste oil in the sewer, the kitchen waste oil primary screening machine 2 transports the liquid mixed with fine residue, oil, and wastewater to the kitchen waste oil heating tank 3. The kitchen waste oil primary screening machine 2 transports the large residue to the kitchen unloading hopper 8. The kitchen waste oil three-phase centrifuge 5 transports the oil to the kitchen waste oil storage tank 6. The kitchen waste oil three-phase centrifuge 5 transports the fine residue to the kitchen unloading hopper 8. The kitchen waste oil three-phase centrifuge 5 transports the wastewater to the filtrate tank 10.

[0072] In the process of kitchen waste treatment, the heating tank 18 heats the liquid mixed with wastewater and oil, and the heating pump delivers the heated liquid to the filtrate tank 10 and the organic residue mixing tank 11.

[0073] The kitchen waste oil is received by the kitchen waste oil unloading hopper 1, the kitchen waste is received by the kitchen unloading hopper 8, and the kitchen waste oil treatment system and the kitchen waste treatment system are combined through the connection of the kitchen waste oil unloading hopper 8, the kitchen waste oil three-phase centrifuge 5, the kitchen waste oil heating tank 3 and the kitchen waste oil primary screening machine 2, so that the residue and wastewater in the kitchen waste oil treatment system can be delivered to the kitchen waste treatment system, the water required for kitchen waste treatment can be supplemented, the wastewater in the kitchen waste oil treatment system can be reused by the kitchen waste treatment system, and the residue in the kitchen waste oil treatment system can be further treated.

[0074] The liquid in the filtrate tank 10, the secondary screening machine 16 and the organic residue extruder 17 is delivered to the heating tank 18 and the mixing tank 19, and then the heated liquid in the heating tank 18 is delivered to the filtrate tank 10 and the organic residue mixing tank 11 by the heating water pump 27, so that the heated liquid in the liquid treatment system can be utilized to help the residue treatment system to separate the kitchen waste into solid and liquid, and the kitchen waste oil and the kitchen waste can be jointly treated.

[0075] In the second embodiment, the primary screening machine 9 is optimized based on the first embodiment, and the overflow plate is arranged in the primary screening machine 9, so that the primary screening machine 9 can separate the light residue and the heavy residue in the small residue.

[0076] As shown in Figure 1 and 3 , the primary screening machine 9 comprises a primary shell 901, a primary motor 902, a primary rotating drum 903, a primary flow guide plate 904, a primary sand removal tank 905, a primary sand lifting screw 906 and a primary overflow plate 907.

[0077] The primary motor 902 is connected with the primary shell 901, the primary rotating drum 903 is connected with the primary motor 902 and arranged in the primary shell 901, the primary flow guide plate 904 is arranged in the primary rotating drum 903, the primary sand removal tank 905 is arranged at the bottom end of the shell, the primary sand lifting screw 906 is arranged at the bottom end of the primary sand removal tank 905, and the primary overflow plate 907 is connected with the primary sand removal tank 905.

[0078] The primary shell 901 is provided with a feeding port, a large residue discharging port and a small residue discharging port, the primary motor 902 is arranged at the feeding port of the primary shell 901, the primary rotating drum 903 and the primary flow guide plate 904 are arranged between the feeding port and the large residue discharging port, and the primary sand removal tank 905 is in communication with the small residue discharging port.

[0079] The primary desanding tank 905 is provided with a small slag feeding port, a heavy slag discharging port and an overflow port. The small slag feeding port is in communication with the small slag discharging port, and the heavy slag discharging port is in communication with the primary sand lifting screw 906. The primary overflow plate 907 is arranged between the primary sand lifting screw 906 and the overflow port. The organic slag mixing tank 11 is in communication with the overflow port.

[0080] The primary rotary drum 903 comprises a primary support frame connected with the primary motor 902, and a plurality of primary sieve plates connected with the primary support frame. The primary guide plate 904 is a spiral structure. The primary sieve plates are circumferentially distributed around the guide plate. The primary sieve plates are provided with primary filter holes. The primary sieve plates are used for screening small slag into the primary desanding tank 905. The primary guide plate 904 is used for guiding large slag to the large slag discharging port. The central axis of the primary rotary drum 903 is arranged at an angle of 3°-5° upwardly with respect to the ground. The size of the primary filter hole is between 25 mm and 60 mm.

[0081] The central axis of the primary sand lifting screw 906 is arranged at an angle of 20°-40° upwardly with respect to the ground. The primary sand lifting screw 906 is provided with a bottom end and a lifting end. The height of the lifting end is greater than that of the bottom end. The lifting end of the primary sand lifting screw 906 is in communication with the heavy slag discharging port.

[0082] The first screw conveyor 12 is in communication with the large slag discharging port and the heavy slag discharging port. It is used for conveying large slag and heavy slag in small slag to the outside, such as a slag storage tank. Figure 3 The first screw conveyor 12 comprises a primary large slag screw conveyor and a primary heavy slag screw conveyor. The primary large slag screw conveyor is in communication with the large slag discharging port of the primary screening machine 9. The primary heavy slag screw conveyor is in communication with the heavy slag discharging port of the primary screening machine 9.

[0083] The overflow port of the primary desanding tank 905 is arranged at a position close to the bottom end of the primary sand lifting screw 906. The primary overflow plate 907 is arranged between the bottom end of the primary sand lifting screw 906 and the overflow port.

[0084] In this embodiment, a primary overflow pipe 908 can also be added to the primary screening machine 9. The primary screening machine 9 further comprises a primary overflow pipe 908. The primary overflow pipe 908 is in communication with the primary desanding tank 905. The height of the position where the primary overflow pipe 908 is in communication with the primary desanding tank 905 is greater than that of the overflow port.

[0085] The overflow tank is in communication with the primary overflow pipe 908.

[0086] Through the overflow pipe, liquid and small slag in the organic slag mixing tank 11 and the desanding tank can be output to the external overflow tank when the material instantaneously increases, avoiding the problem of backflow of liquid and small slag in the organic slag mixing tank 11 and the desanding tank to the drum, causing damage to the drum, and the like.

[0087] In this embodiment, a hot water inlet can also be added to the primary screening machine 9, and the end of the primary desanding tank 905 is also provided with a hot water inlet. The heating water pump 27 is in communication with the hot water inlet.

[0088] Through the hot water inlet in communication with the heating water pump 27, hot water in the hot water pool can be introduced into the desanding tank, which can heat while playing a role of hydraulic stirring on the material, so that the material can be fully disturbed, and heavy slag and light slag can be effectively separated. At the same time, in the initial state of the screening machine, the filter can be directly filled with liquid to be in a full liquid level state.

[0089] The working principle of the second embodiment is as follows: in the process of treating kitchen waste, the kitchen waste enters the primary drum 903 from the feed inlet of the primary shell 901. In the process of rotating the primary drum 903 driven by the primary motor 902, the primary drum 903 cooperates with the primary flow guide plate 904 to separate large slag, small slag and liquid, so that the large slag is output to the outside from the large slag discharge outlet, and the small slag and the liquid enter the primary desanding tank 905.

[0090] Through the cooperation of the primary desanding tank 905 and the primary overflow plate 907, the small slag and the liquid in the primary desanding tank 905 are settled, the heavy slag in the small slag is settled into the primary sand lifting screw 906, and then the heavy slag is output to the outside through the primary sand lifting screw 906.

[0091] Then the organic matter and other light slag in the small slag and the liquid enter the organic slag mixing tank 11 through the overflow port, so as to separate the heavy slag in the small slag from the liquid, realizing the separation of the heavy slag in the large slag and the small slag, and the light slag in the slag.

[0092] In the process of treating waste by the primary screening machine 9, when the material in the primary desanding tank 905 instantaneously increases beyond the threshold value, the primary overflow pipe 908 outputs the liquid and small slag in the organic slag mixing tank 11 and the desanding tank to the external overflow tank, avoiding the problem of backflow of the liquid and small slag in the organic slag mixing tank 11 and the desanding tank to the drum, causing damage to the drum, and the like.

[0093] In the process of treating waste by the primary screening machine 9, the heating water pump 27 can be used to introduce hot water in the hot water pool into the desanding tank, which can heat while playing a role of hydraulic stirring on the material, so that the material can be fully disturbed, improving the separation efficiency of heavy slag and light slag, and at the same time, in the initial state of the screening machine, the filter can be directly filled with liquid to be in a full liquid level state.

[0094] The large slag, small slag and liquid are separated by the cooperation of the primary drum 903 and the guide plate, the large slag is output to the outside from the large slag discharge port, the small slag and the liquid enter the primary desanding tank 905, the small slag and the liquid are settled by the cooperation of the primary desanding tank 905 and the overflow plate, the heavy slag in the small slag is settled into the primary sand extraction screw 906, the heavy slag is output to the outside through the primary sand extraction screw 906, then the light slag in the small slag and the liquid enter the organic slag mixing tank 11 through the overflow port, the heavy slag in the small slag is separated from the liquid, the separation of the heavy slag in the large slag and the small slag and the light slag in the small slag is realized, and the problem that the heavy slag in the small slag is not separated and the slag-water mixture easily causes blockage, wear and damage to the subsequent processing equipment is solved. Embodiment

[0095] The kitchen waste oil is sent to the factory by a special collection and transportation vehicle, and directly poured into the kitchen waste oil unloading hopper 1. The kitchen waste oil unloading hopper 1 is provided with a steam coil for preheating the material to 40-50 DEG C, and the oil is in a liquid state.

[0096] Then the heated kitchen waste oil enters the kitchen waste oil primary screening machine 2 for primary solid-liquid separation. The kitchen waste oil primary screening machine 2 is mainly composed of a primary screening screw conveyor 201 and a perforated primary screening liner 202. The primary screening holes on the primary screening liner 202 are 5-10 mm in size, and the material smaller than the primary screening holes is further heated to 70-80 DEG C in the kitchen waste oil heating tank 3.

[0097] The kitchen waste oil is then delivered to the kitchen waste oil three-phase centrifuge 5 by the kitchen waste oil centrifuge feed pump 4 for separation. The separated oil is delivered to the kitchen waste oil storage tank 6, and when a certain amount is reached, it is transported outside for further processing by the kitchen waste oil delivery pump 7. The solid residue separated by the kitchen waste oil three-phase centrifuge 5 is delivered to the kitchen unloading hopper 8, and the waste water is delivered to the filtrate tank 10. In this way, the tailings generated by the kitchen waste oil system are all delivered to the kitchen line for further oil extraction.

[0098] The coarse material screened out by the kitchen waste oil primary screening machine 2 is delivered to the kitchen unloading hopper 8. This material further extracts part of the oil that has not been screened out through the kitchen line, and also heats the kitchen material once, fully utilizing the energy and reducing losses.

[0099] The kitchen waste is collected by a special garbage truck and transported to a garbage disposal plant and poured into the kitchen unloading hopper 8. The bottom of the hopper is provided with a kitchen unloading spiral conveyor 802 rotating relatively to lift and convey the kitchen waste. The kitchen unloading spiral conveyor 802 is arranged at an angle of 15°-25°. The lower part of the kitchen unloading spiral conveyor 802 is provided with a kitchen unloading lining plate 803. The kitchen unloading lining plate 803 is provided with liquid outlet holes. The liquid outlet holes are long holes with a size of 8mm*20mm. Oil, water and materials smaller than the liquid outlet holes are finally flowed into the filtrate tank 10 by gravity. Materials larger than the liquid outlet holes are conveyed to the primary screening machine 9 by the kitchen unloading spiral conveyor 802.

[0100] The primary screening machine 9 mainly comprises a primary shell 901, a primary motor 902, a primary rotating drum 903, a primary guide plate 904, a primary sand removal tank 905, a primary sand lifting spiral machine 906 and a primary overflow plate 907. The primary rotating drum 903 is provided with primary filter holes with sizes of 25mm, 50mm or 60mm around the whole circumference. After the materials are conveyed into the primary rotating drum 903, the primary motor 902 drives the primary rotating drum 903 to rotate circumferentially. The primary rotating drum 903 is covered by the primary shell 901 to prevent the materials from overflowing. The top of the primary shell 901 is provided with two flange openings as odor suction openings. The primary rotating drum 903 is composed of a stainless steel primary support frame and a plastic PP primary sieve plate. The primary shell 901 is made of stainless steel. In order to prevent the materials from being hung in the gap, the thickness of the PP primary sieve plate is generally set to be 10mm-20mm, which can reduce the weight of the whole device and achieve the effects of corrosion resistance and no material hanging. The primary rotating drum 903 is arranged at an angle of 3°-5° to more effectively filter the materials.

[0101] The primary guide plate 904 is arranged in the primary rotating drum 903. The materials larger than the primary filter holes are finally output to the primary large slag spiral conveyor at the rear end of the primary rotating drum 903 and transported to the incineration plant, landfill site and other subsequent treatment sites. The materials smaller than the primary filter holes are all dropped into the primary sand removal tank 905 arranged below. The materials with a density larger than water, including bones, stones, metals and shells, are finally sunk to the bottom and sent out by the primary sand lifting spiral machine 906 at the bottom end. The above materials can avoid the blockage, wear and damage of the device in subsequent crushing, conveying and screening.

[0102] The primary sand lifting spiral machine 906 is arranged at an angle of 20°-40°. The overflow hole is arranged at the end of the primary sand removal tank 905. Under the action of the buoyancy of water, most of the organic matter passes through the primary overflow plate 907 and is finally conveyed into the organic slag mixing tank 11. The primary sand removal tank 905 simultaneously receives the filtrate conveyed by the heating pump to perform one-time heating and ensure that the primary sand removal tank 905 is in a full liquid level state.

[0103] The bottom of the organic residue mixing tank 11 is opened, and after being sheared by a first organic residue shearing machine 13, the organic residue is transported to a second screening machine 16 by an organic residue conveying pump 14 for further separation.

[0104] The second screening machine 16 is also mainly composed of a second shell, a second motor and a second drum. The second shell is covered by stainless steel, and the second drum uses stainless steel grid bars as a screen plate. The gap between the grid bars is set to 1.0 mm, 1.5 mm or 2.0 mm, forming long strip-shaped second filter holes. Most of the materials smaller than the second filter holes are water and oil, which also carry materials smaller than the second filter holes, and finally flow into the heating pool 18. The materials larger than the second filter holes are finally discharged to the organic residue extruder 17 through the second guide plates in the second drum, and are further dewatered and then transported out for resource utilization. The filtrate squeezed out by the organic residue extruder 17 is also collected into the heating pool 18. The heating pool 18 is heated by steam, and a part of the heated water is returned to the filtrate tank 10, the organic residue mixing tank 11 and the first sand removal tank 905 at the front end by a heating water pump 27 for heating and hydraulic stirring. Especially in winter, the material temperature is low, and needs to be heated to 30-40℃ for easy liquefaction of animal fat and easy separation. The heating water pump 27 is arranged at the bottom of the pool, and the overflow plate is arranged at the upper part of the heating pool 18. The oil-water mixture after heating is overflowed into the mixing pool 19.

[0105] The mixing pool 19 can be further heated to about 70℃, and the material is transported to the kitchen three-phase centrifuge 21 by the kitchen centrifuge feeding pump 20 for oil-water residue separation. The separated oil is finally transported out for further production of biodiesel and other resource utilization through the crude oil buffer tank 24. The kitchen three-phase centrifuge 21 separates the residue and organic residue for resource treatment, and the waste water from the kitchen three-phase centrifuge 21 is sent to the waste water tank 23 and then to the waste water conveying pump 25 for further treatment in the waste water treatment system.

[0106] As described above, although the present application has been shown and described with reference to certain preferred embodiments thereof, it is to be understood that the application is not to be limited to the details of the above-described embodiments, but can be modified in various ways without departing from the spirit and scope of the present application defined by the appended claims.

Claims

1. A combined kitchen waste and kitchen waste oil treatment system, characterized in that, The application relates to a kitchen waste oil and grease treatment system. The kitchen waste oil and grease unloading hopper is connected with the kitchen waste oil and grease primary screening machine, the kitchen waste oil and grease heating tank is connected with the kitchen waste oil and grease primary screening machine, the kitchen waste oil and grease centrifuge feeding pump is connected with the kitchen waste oil and grease heating tank, the kitchen waste oil and grease three-phase centrifuge is connected with the kitchen waste oil and grease centrifuge feeding pump, the kitchen waste oil and grease storage tank is connected with the kitchen waste oil and grease three-phase centrifuge, the kitchen waste oil and grease conveying pump is connected with the kitchen waste oil and grease storage tank, the kitchen unloading hopper is connected with the kitchen waste oil and grease primary screening machine and the kitchen waste oil and grease three-phase centrifuge, the primary screening machine and the filtrate tank are connected with the kitchen unloading hopper, the organic residue mixing tank and the first screw conveyor are connected with the primary screening machine, the organic residue shearing machine is connected with the organic residue mixing tank, the organic residue conveying pump is connected with the organic residue shearing machine, the filtrate pump is connected with the filtrate tank, the secondary screening machine is connected with the organic residue conveying pump and the filtrate pump, the organic residue extruding machine and the heating pool are connected with the secondary screening machine, the mixing pool is connected with the organic residue extruding machine and the heating pool, the kitchen centrifuge feeding pump is connected with the mixing pool, the kitchen three-phase centrifuge is connected with the kitchen centrifuge feeding pump, the second screw conveyor is connected with the organic residue extruding machine and the kitchen three-phase centrifuge, the wastewater tank and the crude oil buffer tank are connected with the kitchen three-phase centrifuge, the wastewater conveying pump is connected with the wastewater tank, the crude oil conveying pump is connected with the crude oil buffer tank, and the heating water pump is connected with the heating pool. The heating water pump is also connected with the filtrate tank and the organic residue mixing tank. The kitchen waste oil and grease primary screening machine comprises a liquid outlet end and a residue outlet end, the kitchen waste oil and grease heating tank is connected with the liquid outlet end of the kitchen waste oil and grease primary screening machine, and the kitchen unloading hopper is connected with the residue outlet end of the kitchen waste oil and grease primary screening machine. The kitchen waste oil and grease three-phase centrifuge comprises an oil outlet end, a water outlet end and a residue outlet end, the kitchen waste oil and grease storage tank is connected with the oil outlet end of the kitchen waste oil and grease three-phase centrifuge, the filtrate tank is connected with the water outlet end of the kitchen waste oil and grease three-phase centrifuge, and the kitchen unloading hopper is connected with the residue outlet end of the kitchen waste oil and grease three-phase centrifuge. The kitchen waste oil and grease unloading hopper is used for receiving kitchen waste oil and grease, the kitchen unloading hopper is used for receiving kitchen garbage, and the heating water pump is used for conveying the liquid heated in the heating pool into the filtrate tank and the organic residue mixing tank. The primary screening machine comprises a primary shell, a primary motor, a primary rotating drum, a primary guide plate, a primary sand removal tank, a primary sand lifting screw conveyor and a primary overflow plate. ​ The primary motor is connected with a primary shell, the primary drum is connected with the primary motor and arranged in the primary shell, the primary guide plate is arranged in the primary drum, the primary desanding tank is arranged at the bottom end of the shell, the primary sand lifting screw conveyor is arranged at the bottom end of the primary desanding tank, and the primary overflow plate is connected with the primary desanding tank. The primary shell is provided with a feeding port, a large slag discharge port and a small slag discharge port, the primary motor is arranged at the feeding port of the primary shell, the primary drum and the primary guide plate are arranged between the feeding port and the large slag discharge port, and the primary desanding tank is communicated with the small slag discharge port. The primary desanding tank is provided with a small slag feeding port, a heavy slag discharge port and an overflow port, the small slag feeding port is communicated with the small slag discharge port, the heavy slag discharge port is communicated with the primary sand lifting screw conveyor, the primary overflow plate is arranged between the primary sand lifting screw conveyor and the overflow port, and the organic residue mixing tank is communicated with the overflow port. The primary drum comprises a primary support frame connected with the primary motor and a plurality of primary sieve plates connected with the primary support frame, the primary guide plate is a spiral structure, the primary sieve plates are circumferentially distributed around the primary guide plate, a primary filter hole is formed in each primary sieve plate, the primary sieve plates are used for screening small slag into the primary desanding tank, and the primary guide plate is used for guiding large slag to the large slag discharge port. The primary sand lifting screw conveyor is provided with a bottom end and a lifting end, the height of the lifting end is greater than that of the bottom end, and the lifting end of the primary sand lifting screw conveyor is communicated with the heavy slag discharge port. The first screw conveyor is communicated with the large slag discharge port and the heavy slag discharge port, and is used for conveying the large slag and the heavy slag in the small slag to the outside. The overflow port of the primary desanding tank is arranged at a position close to the bottom end of the primary sand lifting screw conveyor, and the primary overflow plate is arranged between the bottom end of the primary sand lifting screw conveyor and the overflow port.

2. The kitchen waste and kitchen waste oil combined treatment system according to claim 1, characterized in that, The kitchen waste oil unloading hopper, the kitchen waste oil heating tank and the kitchen waste oil storage tank are provided with steam coils, and the steam coils are used for heating the oil in the kitchen waste oil unloading hopper, the kitchen waste oil heating tank and the kitchen waste oil storage tank.

3. The kitchen waste and kitchen waste oil combined treatment system according to claim 1, characterized in that, The kitchen waste oil primary screening machine comprises a primary screening screw conveyor and a primary screening lining plate arranged below the primary screening screw conveyor. The central shaft of the primary screening screw conveyor is arranged obliquely upward at an angle of 15°-25° with the ground. The primary screening lining plate is provided with primary screening holes, and the diameters of the primary screening holes are between 5 mm and 10 mm. The kitchen waste oil heating tank is connected with the primary screening lining plate of the kitchen waste oil primary screening machine, and the kitchen unloading hopper is connected with the discharge end of the primary screening screw conveyor of the kitchen waste oil primary screening machine.

4. The kitchen waste and kitchen waste oil combined treatment system according to claim 1, characterized in that, The kitchen unloading hopper comprises a kitchen unloading shell, a kitchen unloading screw conveyor arranged in the kitchen unloading shell and a kitchen unloading lining plate arranged below the kitchen unloading screw conveyor. The central shaft of the kitchen unloading screw conveyor is arranged obliquely upward at an angle of 15°-25° with the ground. The kitchen unloading lining plate is provided with a liquid outlet hole, and the liquid outlet hole is a long hole with a width of 5-10 mm and a length of 15-25 mm. The filtrate tank is connected with the kitchen unloading lining plate, and the primary screening machine is connected with the discharge end of the kitchen unloading screw conveyor.

5. The combined treatment system for kitchen waste and kitchen waste oil according to claim 1, characterized in that, The central shaft of the primary rotating drum is arranged obliquely upward at an angle of 3-5° with the ground, and the size of the primary filter hole is between 25 mm and 60 mm. The central shaft of the primary sand lifting screw machine is arranged obliquely upward at an angle of 20-40° with the ground.

6. The kitchen waste and kitchen waste oil combined treatment system according to claim 5, characterized in that, The primary screening machine further comprises a primary overflow pipe which is in communication with the primary sand removal tank, and the position where the primary overflow pipe is in communication with the primary sand removal tank is higher than the height of the overflow port. The filtrate tank is in communication with the primary overflow pipe.

7. The kitchen waste and kitchen waste oil combined treatment system according to claim 5, characterized in that, The end of the primary sand removal tank is further provided with a hot water port, and the heating water pump is in communication with the hot water port.

8. The kitchen waste and kitchen waste oil combined treatment system according to claim 1, characterized in that, The secondary screening machine comprises a secondary housing, a secondary motor, a secondary rotating drum and a secondary flow guide plate. The secondary motor is connected with the secondary housing, the secondary rotating drum is connected with the secondary motor, the secondary rotating drum is arranged in the secondary housing, and the secondary flow guide plate is arranged in the secondary rotating drum. The secondary rotating drum comprises a secondary support frame connected with the secondary motor, and a plurality of secondary sieve plates connected with the secondary support frame. The secondary sieve plate is composed of a plurality of grid bars, the adjacent grid bars are spaced apart by a predetermined distance to form secondary filter holes, and the size of the secondary filter holes is between 1 mm and 2 mm.

9. The kitchen waste and kitchen waste oil combined treatment system according to claim 1, characterized in that, The heating pool and the mixing pool are provided with a direct injection type steam heating device. 10.The combined treatment method of the kitchen waste and kitchen waste oil combined treatment system according to claim 1, characterized in that, It comprises: The treatment process of waste oil in the sewer: After the kitchen waste oil unloading hopper receives the waste oil in the sewer, the waste oil is transported to the kitchen waste oil primary screening machine, and the waste oil sequentially passes through the kitchen waste oil primary screening machine, the kitchen waste oil heating tank, the kitchen waste oil centrifuge feed pump and the kitchen waste oil three-phase centrifuge for treatment. The treatment process of kitchen waste: After the kitchen unloading hopper receives the kitchen waste, the kitchen waste is transported to the primary screening machine, and the kitchen unloading hopper transports the liquid mixed with oil and wastewater to the filtrate tank, and the filtrate pump transports the liquid mixed with oil and wastewater in the filtrate tank to the secondary screening machine. The first screen machine transports the separated residues to the first screw conveyor, the first screen machine transports the separated liquid mixed with organic residues, oil and wastewater to the organic residue mixing tank, the liquid in the organic residue mixing tank is transported to the second screen machine through the organic residue shearing machine and the organic residue conveying pump, the second screen machine transports the separated residues to the organic residue extruder, the second screen machine transports the separated liquid mixed with oil and wastewater to the heating tank, the organic residue extruder transports the liquid mixed with oil and wastewater to the mixing tank, the heating tank transports the liquid mixed with oil and wastewater to the mixing tank, the kitchen centrifuge feeding pump transports the liquid in the mixing tank to the kitchen three-phase centrifuge, the organic residue extruder and the kitchen three-phase centrifuge transport the separated residues to the second screw conveyor, the kitchen three-phase centrifuge transports the separated wastewater to the wastewater tank, the kitchen three-phase centrifuge transports the separated oil to the crude oil buffer tank, the first screw conveyor and the second screw conveyor output the residues to the outside, the wastewater conveying pump outputs the wastewater in the wastewater tank to the outside, and the crude oil conveying pump outputs the oil in the crude oil buffer tank to the outside; In the process of treating abandoned oil in the sewer, the kitchen abandoned oil preliminary screening machine transports the liquid mixed with fine residues, oil and wastewater to the kitchen abandoned oil heating tank, the kitchen abandoned oil preliminary screening machine transports large residues to the kitchen discharge hopper, the kitchen abandoned oil three-phase centrifuge transports oil to the kitchen abandoned oil storage tank, the kitchen abandoned oil three-phase centrifuge transports fine residues to the kitchen discharge hopper, and the kitchen abandoned oil three-phase centrifuge transports wastewater to the filtrate tank. In the process of treating kitchen waste, the heating tank heats the liquid mixed with wastewater and oil, and the heating pump transports the heated liquid to the filtrate tank and the organic residue mixing tank.

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