阅读说明：本技术 一种旋流闪蒸自供热梯级利用的餐厨垃圾制固体燃料装置 (Rotational flow flash evaporation self-heating cascade utilization device for preparing solid fuel from kitchen waste ) 是由 高明 唐甜 张明宝 赵洪君 张田雨 马欣欣 汪群慧 于 2020-06-23 设计创作，主要内容包括：本发明提供一种旋流闪蒸自供热梯级利用的餐厨垃圾制固体燃料装置,属于废物资源化技术领域。该装置包括加热挤压处理部分、燃烧室部分、高速粉碎及旋流闪蒸部分、冷凝及尾气处理部分和气固分离及固体燃料收集部分,餐厨垃圾经进料口放入螺旋推进器,受到变螺距挤压及下方加热,然后经手摇杆推入粉碎装置,经高速旋转刀片粉碎,足够小物料随烟气切向进入旋流干燥室实现干燥及气固分离,固体产物可用作燃料供给干燥热量,装置内实现负压低温闪蒸,尾气经冷凝、吸附后排放。本装置可实现自供热就地快速干燥,设计向下引燃式燃烧室实现烟气热量梯级利用,能耗低,同时低温燃烧降低污染物产生量,配置尾气处理系统实现达标排放、无二次污染。(The invention provides a device for preparing solid fuel from kitchen waste by rotational flow flash evaporation self-heating cascade utilization, and belongs to the technical field of waste recycling. The device comprises a heating extrusion processing part, a combustion chamber part, a high-speed crushing and cyclone flash evaporation part, a condensation and tail gas processing part, a gas-solid separation and solid fuel collection part, a spiral propeller is placed into kitchen waste through a feed inlet, the kitchen waste is extruded by variable pitch and heated below, then the kitchen waste is pushed into a crushing device through a hand rocker, the kitchen waste is crushed through a high-speed rotating blade, enough small materials enter a cyclone drying chamber along with the tangential direction of flue gas to realize drying and gas-solid separation, a solid product can be used as fuel to supply drying heat, negative-pressure low-temperature flash evaporation is realized in the device, and tail gas is discharged after condensation. The device can realize self-heating on-site rapid drying, the downward ignition type combustion chamber is designed to realize gradient utilization of flue gas heat, the energy consumption is low, meanwhile, the pollutant generation amount is reduced by low-temperature combustion, and the tail gas treatment system is configured to realize standard emission and no secondary pollution.)

1. The utility model provides a kitchen garbage system solid fuel device that whirl flash distillation self-heating cascade utilized which characterized in that: comprises a heating extrusion processing part, a combustion chamber part, a high-speed crushing and cyclone flash evaporation part, a condensation and tail gas processing part and a gas-solid separation and solid fuel collection part, wherein the heating extrusion processing part comprises a kitchen waste feed inlet (1), a valve (2), a hand-operated rod (3), a variable pitch screw propeller (4), a steam discharge port (5) and a propeller outlet (6), the combustion chamber part comprises an upper air inlet (17), a lower air inlet (22), a combustion chamber grid (19), a feed door (16), an ash cleaning door (20) and an igniter (18), the high-speed crushing and cyclone flash evaporation part comprises a crushing blade (7), a crusher motor (8), a central exhaust pipe (11), a channel (23) and a cyclone drying chamber (9), the condensation and tail gas processing part comprises a condenser pipe (12), a water storage tank (13), an active carbon adsorption column (14) and an induced draft fan (15), gas-solid separation and solid fuel collection part include storage silo (10), heating extrusion processing part is located device upper portion, high-speed crushing and whirl flash distillation part are connected to heating extrusion processing part end propeller outlet (6), heating extrusion processing part lower extreme is the combustion chamber part, the combustion chamber part passes through flue gas pipeline (21) and is connected with high-speed crushing and whirl flash distillation part, condensation and tail gas processing part are connected with heating extrusion processing part through steam exhaust port (5), condensation and tail gas processing part are connected with high-speed crushing and whirl flash distillation part through central exhaust pipe (11), condensation and tail gas processing part end-to-end connection draught fan (15).

2. The kitchen waste solid fuel preparation device adopting cyclone flash evaporation and self-heating cascade utilization as claimed in claim 1, is characterized in that: the heating and extrusion processing part main body is a cylindrical steel tank, the diameter is 100-400 mm, the length is 380-400mm, a kitchen waste feeding hole (1) is positioned at the upper part of the heating and extrusion processing part, a valve (2) is arranged below the kitchen waste feeding hole (1), a hand-operated rod (3) is mechanically connected with a variable pitch spiral rod of a variable pitch spiral propeller (4), the variable pitch spiral propeller (4) is arranged in the cylindrical steel tank, the hand-operated rod (3) rotates to drive the variable pitch spiral propeller (4) to operate, the upper part of the cylindrical steel tank is connected with a steam discharging port (5), and the tail end of the cylindrical steel tank is provided with a propeller outlet (6); the variable-pitch screw rod of the variable-pitch screw propeller (4) is manufactured in a customized mode, the pitch at the minimum position is 3-4mm, and the pitch is increased progressively by 8-10 mm.

3. The kitchen waste solid fuel preparation device adopting cyclone flash evaporation and self-heating cascade utilization as claimed in claim 1, is characterized in that: the middle of the combustion chamber part is provided with a combustion chamber grid (19), one side above the combustion chamber grid (19) is provided with a feeding door (16), one side of the bottom end of the combustion chamber part is provided with an ash cleaning door (20), and the feeding door (16) and the ash cleaning door (20) are positioned on the same side and symmetrically distributed in the middle of the wall surface; the upper air inlet (17) and the lower air inlet (22) are respectively positioned at the upper end and the lower end of the combustion chamber part and are positioned at the same side, and the lower part of one side of the combustion chamber part is provided with a flue gas pipeline (21); two igniters (18) are arranged at the position 6-8cm below the bottom of the feeding door (16) and are positioned at two sides of the combustion chamber part, and a combustion chamber grid (19) moves up and down between the feeding door (16) and the ash removal door (20) according to the quantity of combustion materials so as to enable the igniters (18) to be positioned higher than the materials; the side view of the combustion chamber grid (19) is in an inverted trapezoid shape, two sides of the combustion chamber grid are solid steel plates, the bottom of the combustion chamber grid is a pore plate, and the combustion chamber part is designed to be downward ignition type.

4. The kitchen waste solid fuel preparation device adopting cyclone flash evaporation and self-heating cascade utilization as claimed in claim 1, is characterized in that: smashing blade (7) and arranging propeller export (6) below in, smashing blade (7) and being driven by rubbing crusher motor (8), smashing blade (7) place space and passing through passageway (23) and connect whirl drying chamber (9), whirl drying chamber (9) upper portion connect central exhaust pipe (11), storage silo (10) are connected to whirl drying chamber (9) bottom.

5. The kitchen waste solid fuel preparation device adopting cyclone flash evaporation and self-heating cascade utilization as claimed in claim 1, is characterized in that: the condenser pipe (12) is externally provided with a steel pipe with the diameter of 80-100mm and the height of 280-300mm, the condenser pipe is internally provided with a ventilation pipeline, the upper end of the condenser pipe (12) is connected with the central exhaust pipe (11) and the steam exhaust port (5) through pipelines, the other end of the condenser pipe is respectively connected with the water storage tank (13) and the activated carbon adsorption column (14) through pipelines, the size of the activated carbon adsorption column (14) is the same as the external size of the condenser pipe (12), and the tail end of the activated carbon adsorption column (14) is connected with the induced draft fan (15) through a pipeline.

6. The kitchen waste solid fuel preparation device adopting cyclone flash evaporation and self-heating cascade utilization as claimed in claim 1, is characterized in that: the pulverizer motor (8) adopts a vertical motor and is connected with the pulverizing blade (7), a flue gas pipeline (21) opening is arranged on one side of the high-speed pulverizing and rotational flow flash evaporation part close to the combustion chamber part, the opening position is equivalent to the height of the pulverizing blade (7), and the flue gas pipeline (21) is tangentially connected with the high-speed pulverizing chamber; the other end of the flue gas pipeline (21) is connected with the bottom end of the combustor part in an opening mode.

7. The kitchen waste solid fuel preparation device adopting cyclone flash evaporation and self-heating cascade utilization as claimed in claim 1, is characterized in that: the channel (23) is tangentially connected with the cyclone drying chamber (9), the bottom end of the cyclone drying chamber (9) is provided with a storage bin (10), and the storage bin is connected with the cyclone drying chamber (9) by a pull buckle; the cyclone drying chamber (9) is integrally made of carbon steel, the diameter of the channel (23) is 80mm, the length of the channel is 150mm, the channel is connected with an upper cylinder of the cyclone drying chamber (9), the diameter of the upper cylinder of the cyclone drying chamber (9) is 200mm, the height of the upper cylinder of the cyclone drying chamber (9) is 200mm, the minimum diameter of a lower cone of the cyclone drying chamber (9) is 80mm, the height of the lower cone of the cyclone drying chamber (9) is 380mm, and the diameter of the central exhaust pipe (11) is 80; the main body of the storage bin (10) has the diameter of 200-250mm and the height of 80-100 mm.

8. The kitchen waste solid fuel preparation device adopting cyclone flash evaporation and self-heating cascade utilization as claimed in claim 1, is characterized in that: the kitchen waste after being drained is treated in the heating and extruding treatment part, and the fuel used in the combustion chamber part is solid fuel obtained after being treated by the device.

Technical Field

The invention relates to the technical field of waste recycling, in particular to a device for preparing solid fuel from kitchen waste by rotational flow flash evaporation self-heating cascade utilization.

Background

The national kitchen waste production in 2016 is about 9700 ten thousand tons, and the annual speed is increased by more than 10%. In recent years, garbage classification policies prevail, and due to the characteristics of large yield, high water content and large occupied space, the kitchen garbage is high in transportation cost and high in terminal treatment load.

At present, the kitchen waste treatment in a medium-large scale dining room mostly adopts a traditional kitchen waste treatment mode, a refrigerator, a normal-temperature storage space and the like are required to be matched in a waste room, and dining room workers are used for centralized boxing and packaging and then are transferred to a waste centralized treatment place. Although many kitchen waste treatment devices have appeared in recent years, most kitchen waste treatment devices are of a household type or a terminal centralized treatment type, and a medium-sized and large-sized canteen is short of a proper timely treatment device. The terminal centralized treatment type or the household type has more discomforts for the treatment of the kitchen waste in the large and medium canteens, and has high direct transportation cost, long treatment time and great output to cause the waste treatment station to bear heavy burden for the terminal centralized treatment; for household type, the treatment capacity is insufficient, the treatment efficiency is low, and the energy consumption is large, so that a device which has the advantages of rapidness, low energy consumption and capability of rapidly treating large and medium-sized canteen kitchen waste on site is lacked.

If can carry out on-the-spot quick crushing drying to kitchen garbage, not only can effectively reduce the rubbish volume, can improve its organic matter content simultaneously, increase the rubbish calorific value rapidly, can regard as self-heating fuel, keep the device operation, be favorable to subsequent storage transportation and compost, incineration disposal simultaneously, can effectively solve above-mentioned problem. Therefore, the invention designs a device for preparing solid fuel from kitchen waste by rotational flow flash evaporation self-heating cascade utilization, provides a method for preparing solid fuel from kitchen waste by using the device, and provides a novel and efficient reduction and recycling approach for on-site rapid treatment of kitchen waste after domestic waste classification.

Disclosure of Invention

The invention aims to solve the technical problem of providing a device for preparing solid fuel from kitchen waste by rotational flow flash evaporation self-heating cascade utilization, and solves the problems of insufficient treatment capacity, low efficiency, high energy consumption or high transportation cost, long treatment time, overwhelming waste treatment stations and the like of the existing part of kitchen waste treatment devices.

The device comprises a heating extrusion processing part, a combustion chamber part, a high-speed crushing and rotational flow flash evaporation part, a condensation and tail gas processing part and a gas-solid separation and solid fuel collecting part, wherein the heating extrusion processing part comprises a kitchen waste feeding port, a valve, a hand crank, a variable pitch spiral propeller, a steam discharge port and a propeller outlet, the combustion chamber part comprises an upper air inlet, a lower air inlet, a combustion chamber grid, a feeding gate, an ash removal gate and an igniter, the high-speed crushing and rotational flow flash evaporation part comprises a crushing blade, a crusher motor, a central exhaust pipe, a channel and a rotational flow drying chamber, the condensation and tail gas processing part comprises a condenser pipe, a water storage tank, an active carbon adsorption column and an induced draft fan, the gas-solid separation and solid fuel collecting part comprises a storage bin, the heating extrusion processing part is positioned on the upper part of the device, the propeller outlet at the, the lower end of the heating and extruding treatment part is a combustion chamber part, the combustion chamber part is connected with the high-speed crushing and rotational flow flash evaporation part through a flue gas pipeline, the condensation and tail gas treatment part is connected with the heating and extruding treatment part through a steam exhaust port, the condensation and tail gas treatment part is connected with the high-speed crushing and rotational flow flash evaporation part through a central exhaust pipe, and the tail end of the condensation and tail gas treatment part is connected with a draught fan.

The main body of the heating and extruding treatment part is a cylindrical steel tank, the diameter is 100-120mm, the length is about 380-400mm, the kitchen waste feed inlet is positioned at the upper part of the heating and extruding treatment part, a valve is arranged below the kitchen waste feed inlet, a hand-operated rod is mechanically connected with a variable-pitch spiral rod of a variable-pitch spiral propeller, the variable-pitch spiral propeller is arranged in the cylindrical steel tank, the hand-operated rod rotates to drive the variable-pitch spiral propeller to operate, the upper part of the cylindrical steel tank is connected with a steam discharge port, and the tail end of the cylindrical steel tank is provided with a propeller; the variable pitch screw rod of the variable pitch screw propeller is manufactured in a customized mode, the pitch at the minimum position is 3-4mm, and the pitch is increased progressively by 8-10 mm.

The side view of the combustion chamber grid in the combustion chamber part is in an inverted trapezoid shape, two sides of the combustion chamber grid are solid steel plates, the bottom of the combustion chamber part is a pore plate, the combustion chamber part is designed to be in a downward ignition type, the combustion chamber grid is arranged in the middle of the combustion chamber part, one side above the combustion chamber grid is provided with a feeding door, one side of the bottom end of the combustion chamber part is provided with an ash removal door, and the feeding door and the ash removal door are positioned; the upper air inlet and the lower air inlet are respectively positioned at the upper end and the lower end of the combustion chamber part and are positioned at the same side; two igniters are arranged at the position 6-8cm below the bottom of the feeding door and are positioned at two sides of the combustion chamber part, and the combustion chamber grid moves up and down between the feeding door and the ash removal door according to the quantity of combustion materials so that the igniters are positioned at the position higher than the materials.

The crushing blade is arranged below the outlet of the propeller and is driven by a crusher motor, the space where the crushing blade is located is connected with the cyclone drying chamber through a channel, the upper part of the cyclone drying chamber is connected with a central exhaust pipe, and the bottom of the cyclone drying chamber is connected with a storage bin.

The condenser pipe is externally provided with a steel pipe with the diameter of 80-100mm and the height of 280-300mm, the condenser pipe is internally provided with a ventilation pipeline, the upper end of the condenser pipe is connected with other parts of the central exhaust pipe and the steam exhaust port connecting device through pipelines, the other end of the condenser pipe is respectively connected with the water storage tank and the active carbon adsorption column through pipelines, the size of the active carbon adsorption column is the same as that of the outside of the condenser pipe, and the tail end of the active carbon adsorption column is connected with the induced draft fan through a.

The steam discharging port is connected above the variable-pitch spiral propeller box body, and the central exhaust pipe is connected above the cyclone drying chamber.

The pulverizer motor adopts a vertical motor, is connected with the pulverizing blade and is fixed in the box body, a flue gas pipeline opening is arranged on one side of the high-speed pulverizing and rotational flow flash evaporation part close to the combustion chamber part, the opening position is equivalent to the height of the pulverizing blade, and the flue gas pipeline is tangentially connected with the high-speed pulverizing chamber; the other end opening of the flue gas pipeline is connected with the bottom end of the combustion chamber part.

The channel is tangentially connected with the cyclone drying chamber; the bottom end of the cyclone drying chamber is provided with a storage bin which is connected with a cyclone dryer by a pull buckle; the cyclone drying chamber is integrally made of carbon steel, the diameter of the channel is 80mm, the length of the channel is 150mm, the channel is connected with the upper cylinder of the cyclone drying chamber, the diameter of the upper cylinder of the cyclone drying chamber is 200mm, the height of the upper cylinder of the cyclone drying chamber is 200mm, the minimum diameter of a lower cone of the cyclone drying chamber is 80mm, the height of the lower cone of the cyclone drying chamber is 380mm, and the diameter of a central exhaust pipe is 80 mm; the storage bin main body has the diameter of 200mm and the height of 80-100 mm.

The kitchen waste after being drained is treated in the heating and extruding treatment part, and the fuel used in the combustion chamber part is solid fuel obtained after being treated by the device.

The technical scheme of the invention has the following beneficial effects:

(1) the device realizes heating, extrusion and water removal of the kitchen waste in the variable-pitch propeller, facilitates subsequent crushing and improves the treatment efficiency;

(2) the high-speed rotational flow of the device forms shearing force to break cell walls of organic matters, and the kitchen waste is quickly dried in a low-pressure and low-temperature atmosphere, so that the treatment time is shortened;

(3) the device dries the kitchen waste to obtain solid fuel, can supply heat required by the device and can additionally output to generate benefit;

(4) the combustion chamber of the device adopts downward ignition type, high-temperature preheating fuel and medium-temperature preheating kitchen waste, and low-temperature flue gas is used for drying, so that the energy gradient utilization is realized;

(5) the low-temperature combustion of the device reduces the pollutant production amount, and the tail gas treatment system can realize standard emission and no secondary pollution.

Drawings

FIG. 1 is a schematic structural diagram of the apparatus of the present invention.

Wherein: 1-kitchen waste feed inlet, 2-valve, 3-hand rocker, 4-variable pitch screw propeller, 5-steam outlet, 6-propeller outlet, 7-crushing blade, 8-crusher motor, 9-cyclone drying chamber, 10-storage bin, 11-central exhaust pipe, 12-condenser pipe, 13-water storage tank, 14-activated carbon adsorption column, 15-induced draft fan, 16-feed gate, 17-upper air inlet, 18-igniter, 19-combustion chamber grid, 20-ash removal gate, 21-flue gas pipeline, 22-lower air inlet and 23-channel.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

The invention provides a device for preparing solid fuel from kitchen waste by rotational flow flash evaporation self-heating cascade utilization.

As shown in fig. 1, the device comprises a heating extrusion processing part, a combustion chamber part, a high-speed crushing and cyclone flash evaporation part, a condensation and tail gas processing part and a gas-solid separation and solid fuel collection part, wherein the heating extrusion processing part comprises a kitchen waste feed inlet 1, a valve 2, a hand lever 3, a variable pitch spiral propeller 4, a steam discharge port 5 and a propeller outlet 6, the combustion chamber part comprises an upper air inlet 17, a lower air inlet 22, a combustion chamber grid 19, a feed door 16, an ash cleaning door 20 and an igniter 18, the high-speed crushing and cyclone flash evaporation part comprises a crushing blade 7, a crusher motor 8, a central exhaust pipe 11, a channel 23 and a cyclone drying chamber 9, the condensation and tail gas processing part comprises a condenser pipe 12, a water storage tank 13, an active carbon adsorption column 14 and an induced draft fan 15, the gas-solid separation and solid fuel collection part comprises a storage bin 10, the heating extrusion processing part is, the outlet 6 of the propeller at the tail end of the heating and extrusion processing part is connected with the high-speed crushing and rotational flow flash evaporation part, the lower end of the heating and extrusion processing part is a combustion chamber part, the combustion chamber part is connected with the high-speed crushing and rotational flow flash evaporation part through a flue gas pipeline 21, the condensation and tail gas processing part is connected with the heating and extrusion processing part through a steam exhaust port 5, the condensation and tail gas processing part is connected with the high-speed crushing and rotational flow flash evaporation part through a central exhaust pipe 11, and the tail end of the condensation and tail gas processing part is.

The main body of the heating and extruding treatment part is a cylindrical steel tank, the diameter is 100-120mm, the length is about 380-400mm, the kitchen waste feed inlet 1 is positioned at the upper part of the heating and extruding treatment part, a valve 2 is arranged below the kitchen waste feed inlet 1, a hand-operated rod 3 is mechanically connected with a variable-pitch spiral rod of a variable-pitch spiral propeller 4, and the hand-operated rod 3 rotates to drive the variable-pitch spiral propeller 4 to operate; the variable pitch screw rod is manufactured in a customized mode, the pitch at the minimum position is 3-4mm, and the pitch is increased by 8-10 mm.

The side view of a combustion chamber grid 19 in the combustion chamber is in an inverted trapezoid shape, two sides of the combustion chamber grid are solid steel plates, the bottom of the combustion chamber grid is a pore plate, the combustion chamber part is designed to be in a downward ignition type, a feeding door 16 is arranged on one side above the combustion chamber grid 19 in the combustion chamber part, an ash removal door 20 is arranged on one side of the bottom end of the combustion chamber part, and the feeding door 16 and the ash removal door 20 are positioned on the same side; the upper air inlet 17 and the lower air inlet 22 are respectively positioned at the upper end and the lower end of the combustion chamber part and are positioned at the same side, and the upper air inlet 7 and the lower air inlet 22 are provided with valves; two igniters 18 are arranged at the position 6-8cm below the bottom of the feeding door 16 and are positioned at two sides of the combustion chamber part, and a combustion chamber grid 19 moves up and down between the feeding door 16 and the ash removal door 20 according to the quantity of combustion materials so that the igniters 18 are positioned higher than the materials.

The condenser pipe 12 is externally provided with a steel pipe with the diameter of 80-100mm and the height of 280-300mm, the inside of the condenser pipe is provided with a ventilation pipeline, the upper end of the condenser pipe 12 is connected with other parts of the central exhaust pipe 11 and the steam exhaust port 5 through pipelines to collect generated waste gas, the other end of the condenser pipe is connected with the water storage tank 13 and the activated carbon adsorption column 14 through pipelines, the size of the activated carbon adsorption column 14 is the same as the external size of the condenser pipe 12, and the tail end of the activated carbon adsorption column 14 is connected with the induced draft fan 15 through a pipeline.

The steam outlet 5 is connected above the box body of the variable-pitch spiral propeller 4, and the central exhaust pipe 11 is connected above the cyclone drying chamber 9.

The pulverizer motor 8 adopts a vertical motor, is connected with the pulverizing blade 7 and is fixed in the box body, a flue gas pipeline 21 opening is arranged on one side of the high-speed pulverizing and rotational flow flash evaporation part close to the combustion chamber part, the opening position is equivalent to the height of the pulverizing blade 7, and the flue gas pipeline 21 is tangentially connected with the high-speed pulverizing chamber; the other end of the flue gas pipeline 21 is connected with the bottom end of the combustion chamber part in an opening mode.

The channel 23 is tangentially connected with the cyclone drying chamber 9; the bottom end of the cyclone drying chamber 9 is provided with a storage bin 10 which is connected with the cyclone dryer 9 by a pull buckle and can be detached; the cyclone drying chamber 9 is integrally made of carbon steel, the diameter of the channel 23 is 80mm, the length of the channel is 150mm, the channel is connected with the upper part of the cylinder, the diameter of the upper part of the cylinder is 200mm, the height of the upper part of the cylinder is 200mm, the minimum diameter of the lower part of the cylinder is 80mm, the height of the lower part of the cylinder is 380mm, and the diameter of the central exhaust pipe 11 is 80 mm; the storage bin 10 has a main body diameter of 200mm and a height of 80-100 mm.

The kitchen waste after being drained is treated in the heating and extruding treatment part, and the fuel used in the combustion chamber part is solid fuel obtained after being treated by the device.

The method for applying the device comprises the following steps:

s1: uniformly spreading the dry fuel on a combustion chamber grid 19 through a feed door 16; the igniter 18 is activated to ignite; starting an induced draft fan 15 and a pulverizer motor 8; feeding kitchen waste to be treated from a feeding hole 1, driving a variable-pitch spiral propeller 4 to rotate through a hand-operated rod 3, closing a valve 2, realizing extrusion dewatering and preheating of the material, and feeding the material into a high-speed crushing and rotational flow flash evaporation part;

s2: the kitchen waste after preliminary dewatering is heated and extruded by the variable-pitch screw propeller 4 falls into the bottom of the crushing chamber, low-temperature flue gas in the combustion chamber enters the crushing chamber from the flue gas pipeline 21 under the action of the tail end induced draft fan 15, is crushed into garbage particles which are small enough and light enough by the crushing blade 7, can move along with hot air flow, and is fully crushed and heated in complex air flow. The garbage particles enter the cyclone drying chamber 9 tangentially along with hot air flow through the channel 23, so that thorough crushing and full drying are realized. The crushed garbage rotates with the flue gas under the action of a tail end draught fan, is separated from the air flow by means of centrifugal force and is collected on the wall of the container, and then falls into the storage bin 10 under the action of gravity. When the rotating and descending outward rotating airflow reaches the bottom of the cone, the outward rotating airflow is closed to the center of the dust remover due to the conical contraction. When the airflow reaches a certain position at the lower end of the cone, the airflow continuously spirally flows from bottom to top from the middle part of the cyclone dust collector in the same rotating direction, finally, the flue gas is discharged from the exhaust port 11 through the central exhaust pipe, and the product in the storage bin 10 can be continuously heated and dried under the action of low-temperature flue gas during the crushing and drying;

s3: the upper air inlet 17 and the lower air inlet 22 in the combustion chamber are opened in a matching way, so that sufficient oxygen is ensured in the combustion chamber, and combustion cannot be influenced by overlarge air flow rate;

s4: the inlet at the lower end of the condensation pipe 12 is connected with cooling circulating water, and the outlet at the upper end of the condensation pipe 12 outputs heated cooling circulating water; the water vapor removed from the variable pitch screw propeller 4 and the cyclone drying chamber 9 is liquefied by a condensing tube 12 and then is collected in a water tank 13 in a centralized way;

s5: the residual tail gas in the S3 is transmitted to the activated carbon adsorption column 14 under the action of the tail end draught fan 15, and is discharged after being treated;

s6: and turning off the power supply and extinguishing the combustion. And opening the pull button, taking down the storage bin 10, and collecting and recycling the generated solid fuel.

The working principle of the whole device is as follows: placing the kitchen waste into a spiral propeller, and extruding by variable screw pitch and heating by a lower combustion chamber; pushing to a crushing device, and crushing by a high-speed rotating blade; the small enough materials enter the cyclone device along with the low-temperature flue gas in a tangential direction to realize drying and gas-solid separation; the solid product can be used as a fuel heating screw propeller, and the smoke heat of the solid product is used for drying the material; low-temperature negative pressure is formed in the device to form flash evaporation; and tail gas is discharged after condensation and adsorption treatment. The device innovatively provides a high-speed rotational flow flash evaporation process for the kitchen waste, the solid fuel is obtained through the design of self-sufficiency of fuel, gradient utilization of heat and low-temperature negative pressure drying, the problems of long time consumption, high transportation cost, overhigh terminal load and the like in the kitchen waste treatment are solved, the device has the advantages of high speed, high efficiency, device integration and the like, is suitable for various large dining halls or restaurants, and realizes the on-site reduction and resource treatment of the waste.

The device can be popularized and used for treating high-water-content organic wastes such as sludge and mushroom dregs to obtain high-added-value products, can also be combined with devices such as dinner plate cleaning, realizes integration of dinner plate recovery and garbage treatment, has a design idea in accordance with the national concepts of energy conservation and emission reduction and sustainable development, and has a wide application prospect.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.