CN115650781B

CN115650781B - Device and process for treating perishable garbage by biological drying and decomposition promotion

Info

Publication number: CN115650781B
Application number: CN202211138803.4A
Authority: CN
Inventors: 吴伟祥; 王昊书; 胡健; 马壮
Original assignee: Zhejiang Chuanchao Environmental Protection Technology Co ltd
Current assignee: Zhejiang Chuanchao Environmental Protection Technology Co ltd
Priority date: 2021-12-13
Filing date: 2022-09-19
Publication date: 2024-05-24
Anticipated expiration: 2042-09-19
Also published as: CN115650781A

Abstract

The invention discloses a device and a process for treating perishable garbage by biological drying and decomposition promotion. In the device, a drying bin required by biological drying and a decomposing bin required by aerobic decomposing are subjected to an integrated structure, the drying bin is utilized to carry out biological drying on perishable garbage, and the microbial biomass in the drying bin is improved while the dehydration rate is reduced, so that the requirements of subsequent aerobic composting on the microbial biomass are met; and then the biological dried material is continuously subjected to aerobic composting by utilizing the decomposing tank, so that the biological dried material is decomposed into organic fertilizer. Therefore, the invention can provide optimum growth and metabolism conditions for aerobic microorganisms through the linkage effects of ventilation aeration, mechanical stirring, heat energy utilization, moisture removal and material decomposition, realize quick dehydration and decomposition of the perishable garbage, solve the problems of large occupied area, long material dehydration and fertilizer forming period, poor fertilizer efficiency and the like in the process of fertilizing the perishable garbage, and provide an integrated process method for high-efficiency low-consumption quick treatment of the perishable garbage in engineering practice.

Description

Device and process for treating perishable garbage by biological drying and decomposition promotion

Technical Field

The invention belongs to the field of garbage treatment equipment, and particularly relates to a device and a process for treating perishable garbage by biological drying and decomposition promotion.

Background

The perishable garbage has both pollution properties and resource properties, and on one hand, the perishable garbage has high moisture content, is extremely perishable, bad and smelly, and has the pollution properties of breeding mosquitoes, and on the other hand, the perishable garbage has resource properties capable of being recycled and fertilized. Along with the continuous improvement of the garbage classification proportion, the resource treatment requirement of perishable garbage is increased. However, the technology for efficiently recycling and utilizing the perishable garbage has a plurality of difficulties at present, wherein the important reason is that the perishable garbage has too high water content, which is very easy to cause the agglomeration of perishable garbage materials, damages ventilation and oxygen supply of an aerobic system, causes local anaerobic and organic component degradation resistance, greatly reduces the recycling and fertilizer effect of the perishable garbage, and can cause the problems of large occupied area of treatment facilities, long fermentation period, accompanying malodorous gas and the like, thereby greatly limiting the popularization and application of the technology.

The biological drying process realizes the drying of the materials by the characteristic of degrading and generating heat of microorganisms, and has the advantages of low energy consumption and short period.

For example, in the invention patent publication No. CN103922816A, a farm-cultured manure bio-drying system and method is disclosed, the farm-cultured manure bio-drying system comprising a stirring system, a conveying system, an automatic batching system, an aeration system, at least one bio-drying plant, an air extraction system and a deodorizing system. According to the invention, the collected manure of the farm is mixed with auxiliary materials through the stirring system, then the mixed materials are transferred to the automatic batching system at the top of the biological drying workshop through the conveying system, the materials are automatically distributed to the biological drying workshop through the automatic batching system, and under the action of the aeration system and the air draft system, the heat generated by mixing the manure and the auxiliary materials is transferred from bottom to top in the biological drying workshop, so that the whole pile of materials is uniformly heated and the temperature is increased, the manure is quickly biologically dried, meanwhile, the moisture in the materials is changed into water vapor, the water vapor is discharged into the deodorizing system for purification under the action of the air draft system, and then the water vapor is discharged into the air, so that secondary pollution is avoided.

For example, in the patent of the invention with publication number CN110981559a, a full-mixing type biological drying apparatus and method with continuous feed without heating period is disclosed, the apparatus comprises a tank, a stirring screw and an aeration nozzle; the box body adopts a U-shaped reaction bin as a biological drying reaction bin, and a stirring screw and an aeration nozzle are arranged in the box body to perform turning stirring and ventilation aeration; the stirring screw adopts a helical blade to avoid plastic winding and stirring dead angles; the aeration spray head is designed to prevent blockage; the method comprises a starting scheme and an operating scheme, wherein the fresh perishable garbage and the decomposed materials are completely mixed, microorganisms and moisture are reasonably distributed, so that extremely high microbial quantity and microbial activity are obtained, a long heating period (microbial growth period) is skipped in the fermentation process, the residence time is shortened, the occupied area is reduced, and the investment cost and the operation and maintenance cost are reduced.

However, the main purpose of the biological drying process is to reduce the water content of the garbage material, and the final dried material is used as fertilizer directly or used as garbage pyrolysis or incineration. However, the dried material is directly used as fertilizer, which has the defect of insufficient decomposition degree and low germination index of seeds. However, there are still numerous technical or non-technical issues in the garbage pyrolysis or incineration technology at present, so that there is still a limit to the wide popularization thereof.

The composting fermentation technology is another important way in the field of the recycling treatment of the perishable garbage as a method capable of carrying out innocent treatment and full recycling on the perishable garbage. However, when the biological drying process is applied to the composting fermentation technology, the microbial content is insufficient, and an additional microbial agent is needed to be added to improve the microbial content. Therefore, how to efficiently and economically realize the fertilizer treatment of the perishable garbage is a technical problem to be solved at present.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a device and a process for treating perishable garbage by biological drying and decomposition, which can change the perishable garbage into organic fertilizer through deep decomposition and reduce the pollution to the environment.

In order to achieve the above purpose, the present invention provides the following technical solutions:

In a first aspect, the invention provides a biological desiccation and decomposition promoting perishable garbage treatment device, which comprises integrated treatment equipment, a first material conveying mechanism, a second material conveying mechanism and a vibration screening mechanism;

The internal bin body of the integrated treatment equipment is divided into a drying bin and a decomposing bin, and the two bin bodies are provided with heat-insulating structures; the drying bin and the decomposing bin comprise a feed inlet and a discharge outlet, and the discharge outlet of the drying bin is connected with the feed inlet of the decomposing bin through a material moving bin channel capable of controlling opening and closing; the drying bin is internally provided with a stirring device for fully mixing and stirring materials in the bin, a first air supply device for aerating and supplying oxygen to the materials in the bin and a first air extraction and dehumidification device for discharging gas in the bin; the decomposing tank is internally provided with a turning device for turning materials in the tank, a second air supply device for aerating and supplying oxygen to the materials in the tank and a second air extraction and dehumidification device for discharging gas in the tank; the turning device comprises a plane running driving mechanism, an adjusting mechanism and a chain plate type turning mechanism; the chain plate type turning mechanism is arranged on the plane running driving mechanism, the plane running driving mechanism drives the chain plate type turning mechanism to move in the stacking plane of the decomposing hopper, and the chain plate type turning mechanism can obliquely extend into materials in the hopper to turn and throw the materials at the position to one side close to the discharge end; the adjusting mechanism is used for adjusting the depth of the chain plate type turning mechanism extending into the materials in the bin, and the adjusting range of the adjusting mechanism is required to enable the chain plate type turning mechanism to be completely separated from the materials in the bin;

The first material conveying mechanism is arranged at the front end of the integrated treatment equipment, and a discharge hole of the first material conveying mechanism is connected with a feed inlet of the drying bin and is used for conveying perishable garbage to be treated into the drying bin;

The second material conveying mechanism is arranged at the rear end of the integrated treatment equipment, a feed inlet of the second material conveying mechanism is connected with a discharge outlet of the decomposing tank, and the discharge outlet of the second material conveying mechanism is connected with a feed inlet of the vibration screening mechanism and is used for conveying decomposed materials output from the decomposing tank to the vibration screening mechanism;

the vibration screening mechanism is used for carrying out vibration screening on the decomposed materials through a screen.

As a preferable mode of the first aspect, the stirring device includes a stirring blade, a stirring driving motor and a stirring shaft, the stirring blade is mounted on the stirring shaft and is driven to synchronously rotate by the stirring shaft, and the end part of the stirring shaft is connected with an output shaft of the stirring driving motor; and stirring vane includes first helical blade, second helical blade and puddler, and wherein first helical blade and second helical blade symmetry respectively install in the both sides of (mixing) shaft, and the puddler is installed on the (mixing) shaft between first helical blade and the second helical blade.

As a preference of the first aspect, the first air supply device and the second air supply device adopt the same set of air supply system, and comprise an air supply pump and an air supply pipe which are connected, wherein the tail end of the air supply pipe is divided into a plurality of air supply branches which are respectively connected with different aeration holes at the bottoms of the drying bin and the decomposing bin; preferably, a heater for heating air is arranged on the air supply pipe; preferably, the outer surfaces of the drying bin and the decomposing tank are provided with heating plates.

As the preference of the first aspect, the first air extraction and dehumidification device and the second air extraction and dehumidification device adopt the same set of air extraction system, and the system comprises an exhaust pipe and an air extraction device which are connected, wherein the front end of the exhaust pipe is divided into a plurality of exhaust branches, and the exhaust branches are respectively connected with different exhaust holes at the tops of the drying bin and the decomposing bin.

As a preference of the first aspect, the planar traveling driving mechanism includes an axial slide rail, a lateral slide rail, an axial driving mechanism, and a lateral driving mechanism; the two axial sliding rails are arranged at the upper parts of the side walls of the two sides of the decomposing tank in parallel; the two ends of the transverse sliding rail are respectively erected on the two axial sliding rails and driven by the axial driving mechanism to move along the two axial sliding rails; the chain plate type pile turning mechanism is mounted on the transverse sliding rail through a mounting frame and is driven by the transverse driving mechanism to move along the transverse sliding rail.

As a preferable aspect of the first aspect, the chain plate type turning mechanism includes a chain plate driven by two installation rollers and a plurality of turning plates distributed on a plane of the chain plate, the installation rollers are driven by the turning driving mechanism to rotate, and the turning plates on the chain plate are driven to carry the material to the highest point for turning.

Preferably, the adjusting mechanism is a turnover driving mechanism, the chain plate type turnover mechanism is integrally hinged on the mounting frame, and is driven by the turnover driving mechanism to integrally rotate around the rotation center, so that the inclination angle of the plane of the chain plate and the depth of the material extending into the bin are changed.

As a preferable aspect of the first aspect, the first material conveying mechanism and the second material conveying mechanism each adopt a screw conveyor, and the screw conveyor includes a spiral pipe, a spiral blade and a conveying driving motor; the spiral pipe is obliquely arranged, the lower end of the spiral pipe is provided with a material inlet, and the upper section of the spiral pipe is provided with a material outlet; the spiral blade is coaxially arranged in the spiral pipe, one end of the spiral blade is driven to rotate by the conveying driving motor, and materials are conveyed to the material outlet from the material inlet.

Preferably, the vibrating screen mechanism includes a screen mesh, a support spring, and a vibrating mechanism which are built in a housing; the screen cloth is arranged in an inclined way, the bottom of the screen cloth is supported by a plurality of supporting springs, the vibration mechanism is used for applying vibration force to the screen cloth, and the upper space and the lower space of the screen cloth are respectively provided with a discharge hole on the shell.

In a second aspect, the present invention provides a biological desiccation and decomposition promotion process using the perishable garbage treatment device according to any one of the first aspect, comprising the steps of:

S1, purifying, removing impurities, crushing, dehydrating and doping auxiliary materials to be processed on perishable garbage to be processed every day to form a material to be processed;

S2, conveying all the materials to be treated obtained in the step S1 to the drying bin through the first material conveying mechanism, and performing biological drying on the materials to be treated for 22-24 hours after the drying bin finishes feeding to obtain dried materials; the stirring device, the first air supply device and the first air extraction and dehumidification device are started periodically in the biological drying process, so that the materials to be treated in the bin are subjected to full mixing stirring, aeration and air extraction and dehumidification intermittently; in each hour, the first air supply device and the first air extraction and dehumidification device are operated for 10-20 minutes in a linkage way, meanwhile, the stirring device is started to perform full mixing stirring on the materials for 8-10 minutes in the period of the linkage operation, and the stirring device, the first air supply device and the first air extraction and dehumidification device are not operated in the rest time, so that the materials are kept in a static state;

S3, after the biological drying process of the S2 is finished, opening a material moving channel, starting a stirring device to transfer and stack dried materials in a drying bin through the material moving channel to a feeding end of a decomposing bin adopting a continuous feeding and discharging operation mode, and enabling the materials newly transferred into the decomposing bin to be not mixed with the existing materials in the decomposing bin, so that layering is maintained in the axial direction of a bin body;

S4, after all the materials in the drying bin are transferred to the decomposing bin, closing the material bin transferring channel, and continuing to perform aerobic decomposing fermentation on the materials to be processed in the decomposing bin; in the aerobic decomposition fermentation process, the second air extraction and dehumidification device is started in the whole process to perform air extraction and dehumidification in the bin, and meanwhile, the turning device and the second air supply device are started at fixed time, and all materials to be treated are intermittently turned and aerated, wherein the aeration frequency is 10-30 minutes/hour, and the turning frequency is 1-2 times/day; when the turning device is started each time, the chain plate type turning mechanism is required to gradually and axially move from the discharge end to the feed end of the decomposing tank under the drive of the plane running driving mechanism, and materials with different axial positions and with the cross section of the whole tank body are turned back and forth layer by layer in the axial moving process, so that the materials in the decomposing tank gradually move from the feed end to the discharge end along the axial direction and the layering property between new and old materials is always maintained; the residence time of the dried material in the decomposing tank is kept for 5-8 days, and finally the decomposed material is output from a discharge hole of the decomposing tank;

s5, conveying the decomposed materials output in the S4 to the vibration screening mechanism through the second material conveying mechanism, and outputting the decomposed organic fertilizer meeting the particle size requirement.

Compared with the prior art, the invention has the following advantages:

The invention relates to a perishable garbage treatment device and a process thereof for promoting decomposition through biological drying by coupling biological drying and aerobic composting decomposition. In the device, a drying bin required by biological drying and a decomposing bin required by aerobic decomposing are subjected to an integrated structure, the drying bin is utilized to carry out biological drying on perishable garbage, and the microbial biomass in the drying bin is improved while the dehydration rate is reduced, so that the requirements of subsequent aerobic composting on the microbial biomass are met; and then the biological dried material is continuously subjected to aerobic composting by utilizing the decomposing tank, so that the biological dried material is decomposed into organic fertilizer. Therefore, the invention can provide optimum growth and metabolism conditions for aerobic microorganisms through the linkage effects of ventilation aeration, mechanical stirring, heat energy utilization, moisture removal and material decomposition, realize quick dehydration and decomposition of the perishable garbage, solve the problems of large occupied area, long material dehydration and fertilizer forming period, poor fertilizer efficiency and the like in the process of fertilizing the perishable garbage, and provide an integrated process method for high-efficiency low-consumption quick treatment of the perishable garbage in engineering practice. The equipment can control the moisture and the temperature of materials in the fermentation process, so that fermentation is smoothly carried out, meanwhile, the odor generation and dissipation are reduced, and the pollution to the environment is reduced.

Drawings

FIG. 1 is a schematic structural view of a biological drying and decomposing integrated treatment device for perishable garbage;

FIG. 2 is a schematic diagram of the structure of a drying bin;

FIG. 3 is a schematic diagram of a turning device;

FIG. 4 is a schematic view of the layout of aeration holes and heating plates on the bottom surface of the decomposing tank;

FIG. 5 is a schematic view of a link plate type pile turning mechanism for realizing posture adjustment by rotation;

FIG. 6 is a schematic view of a first material handling mechanism;

Fig. 7 is a schematic diagram of a vibratory screening mechanism.

The reference numerals in the drawings are: the drying bin 1, the decomposing tank 2, the stirring device 3, the chain plate type turning mechanism 4, the axial slide rail 5, the power device 6, the air supply pump 7, the heater 8, the air supply pipe 9, the heating plate 10, the discharge door 11, the exhaust pipe 12, the mounting frame 13, the transverse slide rail 14, the stirring rod 15, the first spiral blade 16, the second spiral blade 17, the stirring driving motor 18, the stirring shaft 19, the drying bin housing 20, the rotating shaft 21, the rotating motor 22, the fixed frame 23, the turning motor 24, the turning plate 25, the chain plate 26, the mounting roller 27, the first material conveying mechanism 28, the second material conveying mechanism 29, the vibration screening mechanism 30, the decomposing tank housing 31, the aeration hole 32, the material inlet 281, the spiral pipe 282, the spiral blade 283 and the conveying driving motor 284, the material outlet 285, the screen 301, the supporting spring 302, the vibration mechanism 303, the oversize material outlet 304, and the undersize material outlet 305.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below. The technical features of the embodiments of the invention can be combined correspondingly on the premise of no mutual conflict.

In the description of the present invention, it will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be indirectly connected with intervening elements present. In contrast, when an element is referred to as being "directly connected" to another element, there are no intervening elements present.

In the description of the present invention, it should be understood that the terms "first" and "second" are used solely for the purpose of distinguishing between the descriptions and not necessarily for the purpose of indicating or implying a relative importance or implicitly indicating the number of features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

In a preferred embodiment of the invention, as shown in fig. 1, a bio-desiccation-accelerated perishable garbage treatment device is provided, the treatment device comprising essentially an integrated treatment apparatus, a first material conveying means 28, a second material conveying means 29 and a vibratory screening means. The integrated treatment equipment is the core of the treatment device, and the internal bin body of the integrated treatment equipment is divided into a drying bin 1 and a decomposing bin 2, wherein the drying bin 1 has the function of biologically drying perishable garbage, and the microbial biomass in the perishable garbage is improved while the dehydration rate is reduced, so that the requirements of subsequent aerobic composting on the microbial biomass are met; and the decomposing tank 2 is used for continuously carrying out aerobic composting on the material after biological drying so as to decompose the material into organic fertilizer. The drying bin 1 and the decomposing bin 2 are respectively positioned in the drying bin shell 20 and the decomposing bin shell 31, and in order to ensure the heat preservation effect of the two bin bodies, heat preservation layers are wrapped outside the drying bin shell 20 and the decomposing bin shell 31, so that heat dissipation of materials in the two bin bodies is avoided.

The drying bin 1 and the decomposing bin 2 both comprise a feed inlet and a discharge outlet, and the discharge outlet of the drying bin 1 is connected with the feed inlet of the decomposing bin 2 through a material moving bin channel which can be controlled to be opened and closed. It should be noted that the material moving channel has the function of transferring the material which is biologically dried in the drying bin 1 into the decomposing bin 2, and the specific form is not limited, so long as the transfer of the material can be completed in a heat-preserving state. However, in order to ensure that the two bin bodies are not mutually affected, the bin moving channel of the material needs to be capable of being externally controlled to be opened and closed. In this embodiment, the material moving channel is formed by directly abutting and communicating the discharge port of the drying bin 1 and the feed port of the decomposing tank 2, so that the material moving channel is actually an openable and closable outlet, and the material in the drying bin 1 can directly fall into the decomposing tank 2 from the outlet. The material moving channel is in a closed state in the biological drying process, and is opened for material transfer after the biological drying is completed, and is closed again after the transfer is completed. The material moving channel can be opened and closed by installing a discharging door 11 with a power device 6, and the material outlet is opened by opening the discharging door 11. The specific form of the power device 6 and the discharging door 11 can be adjusted according to actual needs, in this embodiment, the discharging door 11 can move vertically to open and close the material outlet, and the power device 6 driving the discharging door vertically is realized by adopting a linear driving mechanism, such as a pneumatic rod, a linear module, and the like.

The drying bin 1 is internally provided with a stirring device 3, a first air supply device and a first air extraction and dehumidification device, wherein the stirring device 3 is used for fully mixing and stirring materials in the bin so as to fully mix the materials, the first air supply device is used for carrying out aeration and oxygen supply on the materials in the bin so as to provide sufficient oxygen for microorganisms in the materials, and the first air extraction and dehumidification device is used for discharging gas in the bin so as to realize a dehumidification function. The specific forms of the stirring device 3, the first air supply device and the first air extraction and dehumidification device are not limited, and can be adjusted according to actual needs.

Referring to fig. 2, in the present embodiment, the stirring device 3 includes a stirring blade, a stirring driving motor 18 and a stirring shaft 19, wherein the stirring blade is mounted on the stirring shaft 19 and is driven by the stirring shaft 19 to rotate synchronously, and an end of the stirring shaft 19 is connected with an output shaft of the stirring driving motor 18. When the stirring driving motor 18 works, the stirring shaft 19 drives the stirring blades to rotate, so that the materials in the drying bin 1 are sufficiently stirred. In order to ensure the mixing effect of the materials in the drying bin 1, the invention is provided with a special type of stirring blade, which comprises a first spiral blade 16, a second spiral blade 17 and a stirring rod 15, wherein the first spiral blade 16 and the second spiral blade 17 are respectively symmetrically arranged at two sides of a stirring shaft 19, and the stirring rod 15 is arranged on the stirring shaft 19 between the first spiral blade 16 and the second spiral blade 17. The stirring rod 15 may have a plurality of stirring rods uniformly distributed around the outside of the stirring shaft 19, and the stirring rod 15 is T-shaped, one end of the vertical section thereof is connected with the stirring shaft 19, and the horizontal section is fixed to the other end of the vertical section. The rotation directions of the first helical blade 16 and the second helical blade 17 are set so that the materials can be converged towards the position of the stirring rod 15, and the materials in the whole bin body are fully mixed under the stirring of the stirring rod 15. In addition, when the stirring rod 15 rotates along with the shaft, the horizontal section of the stirring rod is preferably close to the bottom of the inner wall of the drying bin 1, so that the material can be directly pushed out into the decomposing tank 2 after the discharging door 11 is opened later.

The decomposing tank 2 is internally provided with a turning device, a second air supply device and a second air extraction and dehumidification device, wherein the turning device is used for turning materials in the tank so that the materials can gradually move from an inlet end to an outlet end in a layer-by-layer translation mode, the second air supply device is used for carrying out aeration and oxygen supply on the materials in the tank so as to provide sufficient oxygen for microorganisms in the materials, and the second air extraction and dehumidification device is used for discharging gas in the tank so as to realize a dehumidification function. The specific forms of the turning device, the second air supply device and the second air extraction and dehumidification device are not limited, and can be adjusted according to actual needs.

For convenience of description, the direction of the connection line between the feed end and the discharge end in the decomposing field 2 is referred to as the axial direction, and the horizontal direction perpendicular to the axial direction is referred to as the transverse direction.

Referring to fig. 1 and 3, the turning device of the present invention includes a planar running driving mechanism, an adjusting mechanism and a chain plate type turning mechanism 4, wherein the planar running driving mechanism can adopt a driving device capable of moving to any position on a plane, and preferably adopts a cross positioning driving mechanism capable of moving along two degrees of freedom in an axial direction and a transverse direction. The chain plate type turning mechanism 4 is arranged on the plane running driving mechanism, and is driven by the plane running driving mechanism to move in the stacking plane of the decomposing tank 2, so that materials at different positions are reversely piled. The chain plate type turning mechanism 4 can obliquely extend into materials in the bin, and the inclined direction of the chain plate type turning mechanism faces the discharge end of the materials, so that the materials at the position can be turned and thrown to the side close to the discharge end when the chain plate type turning mechanism 4 operates. In addition, the adjusting mechanism is used for adjusting the depth of the chain plate type turning mechanism 4 extending into the materials in the bin, and the adjusting range of the adjusting mechanism is enough for the chain plate type turning mechanism 4 to be completely separated from the materials in the bin. The specific structural forms of the plane running driving mechanism, the adjusting mechanism and the chain plate type turning mechanism 4 can be set according to actual requirements.

With continued reference to fig. 1 and 3, in this embodiment, the planar travel drive mechanism includes an axial slide 5, a transverse slide 14, an axial drive mechanism, and a transverse drive mechanism that form a mechanism capable of cross-positioning movement above the plane of the material in the spoil hopper 2. The two axial sliding rails 5 are arranged at the upper parts of the side walls at the two sides of the decomposing tank 2 in parallel, and the installation height of the two axial sliding rails is higher than the material pile height in the decomposing tank 2. And two ends of the transverse sliding rail 14 are respectively erected on the two axial sliding rails 5 through sliding blocks, and are driven by the axial driving mechanism to move along the two axial sliding rails 5. The chain plate type turning mechanism 4 is mounted on the transverse sliding rail 14 through a mounting frame 13, and is driven by a transverse driving mechanism to move along the transverse sliding rail 14. The specific form of the axial drive mechanism and the transverse drive mechanism is not limited, and may be realized by a screw slider assembly with a drive motor, for example. The axial driving mechanism drives the axial screw rod to rotate through an axial driving motor so as to control a sliding block in threaded fit with the screw rod to move along the axial direction, and drives the transverse sliding rail 14 to move along the axial direction through the sliding block; similarly, the transverse driving mechanism drives the transverse screw rod to rotate through the transverse driving motor so as to control the sliding block in threaded fit with the screw rod to move transversely, and the mounting frame 13 hung on the transverse sliding rail 14 is driven by the sliding block to drive the chain plate type turning mechanism 4 to move transversely.

With continued reference to fig. 1 and 3, in this embodiment, the link plate type turning mechanism 4 includes a link plate 26 driven by two mounting rollers 27 and a plurality of turning plates 25 mounted in a distributed manner on the plane of the link plate 26. Wherein two installation rollers 27 are arranged in parallel, a certain interval is kept between the two installation rollers through a fixed connecting rod, a chain plate 26 is wound outside the two installation rollers 27, one installation roller 27 is a driving roller, and the other installation roller 27 is a driven roller. The driving roller turning driving mechanism drives and rotates, in this embodiment, the turning driving mechanism adopts a turning motor 24, and the driving roller is connected with the turning motor 24 through a belt, so that a chain plate 26 is controlled to rotate between two mounting rollers 27 under the driving of the turning motor 24. The plane of the chain plate 26 is uniformly distributed by a series of turning plates 25, and the plate surfaces of the turning plates 25 are perpendicular to the plane of the chain plate 26, so that the included angle between the two plates can be used for accumulating materials. Referring to fig. 1, in the invention, after the installation roller 27 is driven to rotate by the turning driving mechanism, the chain plate 26 is driven to rotate clockwise, so that the turning plate 25 on the chain plate can be driven to carry the material to the highest point and then turn, so that the material near the feeding end can be moved to the side near the discharging end.

In addition, the adjusting mechanism in the invention can be a vertical up-down adjusting mechanism or a turnover driving mechanism. In this embodiment, the adjustment mechanism employs a flip drive mechanism, whose adjustment of the link plate type flip mechanism 4 is achieved by changing the inclination angle of the link plate plane. Referring to fig. 1 and 3, the chain plate type pile turning mechanism 4 is integrally hinged to a fixed frame 23, the fixed frame 23 is mounted below the mounting frame 13 through a rotating shaft 21, and the rotating shaft 21 is driven to rotate by a rotating motor 22, so that the chain plate type pile turning mechanism 4 on the whole fixed frame 23 is driven to integrally rotate by taking the rotating shaft 21 as a rotating center, and the inclination angle of the plane of a chain plate is changed, as shown in fig. 5. And the depth of the whole chain plate extending into the bin is changed when the inclination angle is changed.

In the drying chamber 1 and the decomposing field chamber 2, the air supply devices may be independent of each other or may be shared, and the air extraction and dehumidification devices may be independent of each other or may be shared.

With continued reference to fig. 1, in this embodiment, the first air supply device and the second air supply device in the drying bin 1 and the decomposing tank 2 adopt the same set of air supply system, and include an air supply pump 7 and an air supply pipe 9 that are connected, where the end of the air supply pipe 9 is divided into a plurality of air supply branches, and the air supply branches are respectively connected with different aeration holes 32 at the bottoms of the drying bin 1 and the decomposing tank 2.

With continued reference to fig. 1, in this embodiment, the first air extraction and dehumidification device and the second air extraction and dehumidification device in the drying bin 1 and the decomposing bin 2 adopt the same set of air extraction system, including an exhaust pipe 12 and an air extraction device that are connected, where the front end of the exhaust pipe 12 is divided into a plurality of exhaust branches, and the exhaust branches are respectively connected with different exhaust holes at the tops of the drying bin 1 and the decomposing bin 2.

In addition, since microorganisms in the perishable garbage are sensitive to temperature, it is preferable that a heater 8 for heating air is provided on the air supply pipe 9, and a heating plate 10 is attached inside the heat insulating layer of the outer surfaces of the drying chamber 1 and the decomposing tank 2. The heater 8 and the heating plate 10 are mainly used for heat preservation of materials in winter when the room temperature is low, heat loss is avoided, and the materials can be used without starting when the room temperature is higher than 5 ℃. When the room temperature is lower than 5 ℃, the air pumped by the air supply pump 7 is heated to a certain temperature by the heater 8 and then enters the air supply pipe 9, and then enters the drying bin 1 and the decomposing bin 2 through the aeration holes 33, so that the oxygen amount in the drying bin 1 and the decomposing bin 2 is kept in a sufficient state, and the heat of materials in the drying bin 1 and the decomposing bin 2 is prevented from being taken away by cold air. In addition, the heating plate 10 can be started to assist the heat of the drying bin 1 and the decomposing tank 2, so that the temperature of the internal materials can be maintained.

In addition, aeration holes and heating plates 10 in the drying bin 1 and the decomposing tank 2 should be uniformly distributed at the bottom of the respective bins so as to ensure uniform oxygen supply and heat supply to the materials. As shown in fig. 4, taking the decomposing tank 2 as an example, the heating plates 10 may be installed one by one with a space between adjacent heating plates 10 where the aeration holes 32 are provided.

The working process of the integrated processing device is further described below as follows:

Step 1, inputting the pretreated perishable garbage into a drying bin 1 from a feed inlet for biological drying.

And 2, after the materials enter the drying bin 1, starting a biological drying process. In the biological drying process, a stirring driving motor 18 drives a stirring shaft 19 to rotate, and the stirring rod 15, the first helical blade 16 and the second helical blade 17 drive materials to rotate and mix uniformly. Meanwhile, when aeration ventilation is needed, air is pumped into the drying bin 1 through the air supply pipe 9 by the air supply pump 7 to supply oxygen to the materials. Microorganisms in the perishable garbage are continuously amplified in the process, and the microorganisms are utilized to degrade and generate heat for organic matters, so that the temperature of the materials is increased.

And 3, after the materials in the drying bin 1 are dried to meet the requirements, opening a discharge door 11 through a power device 6, and enabling the materials to enter the decomposing bin 2 through the discharge door 11 under the rotation pushing of a stirring rod 15 to continue deep decomposition.

And 4, after all the dried materials enter the decomposing tank 2, piling the newly-transferred materials to be treated at the feeding end of the decomposing tank 2, and carrying out aerobic decomposing fermentation after incompletely mixing the materials with the existing materials in the decomposing tank 2. In the aerobic decomposing fermentation process, air enters the decomposing tank 2 through the aeration holes 33 by the air supply pump 7 to supply oxygen to the materials, and the exhaust pipe 12 continuously discharges the air in the decomposing tank 2 to ensure the air draft and dehumidification, and meanwhile, the materials to be treated are intermittently turned over. In each pile turning process, the inclination angle of the chain plate type pile turning mechanism 4 is adjusted through the adjusting mechanism to enable the chain plate type pile turning mechanism 4 to be inserted into the bottom of a material in an inclined mode, then the chain plate type pile turning mechanism is driven by the axial driving mechanism to move forwards along the axial sliding rail 5 along the same step length, and after each step length is moved, the transverse pile turning is stopped, the chain plate type pile turning mechanism 4 is driven by the transverse driving mechanism to move transversely along the transverse sliding rail 14 during transverse pile turning, and the pile turning motor 24 drives the chain plate 26 to rotate clockwise with the turning plate 25, so that the material at the bottom is conveyed obliquely upwards until the highest point is turned and thrown onto the surface of the pile. The chain plate type turning mechanism 4 continuously moves forward from the discharge end to the feed end of the decomposing tank 2 through axial and transverse movement, and turns materials with the cross section of each tank body backward layer by layer in the forward moving process, so that the materials at different times can translate from the feed end to the discharge end under the condition that layering is kept, and a feeding space is reserved for new materials at the feed end while old materials are discharged from the discharge end. When the chain plate type turning mechanism 4 finishes one axial movement from the discharge end to the feed end, the inclination angle of the plane of the chain plate is changed again through the adjusting mechanism to enable the chain plate to be separated from the material pile body after being lifted, and the chain plate type turning mechanism can be reset to the discharge end for turning next time. Therefore, the materials in the decomposing tank 2 are subjected to aeration and layered translational movement, so that the air containing oxygen is uniformly introduced into the garbage, the microbial agents and the quick heat-generating activity of the primary microorganisms of the perishable garbage are fully activated, and the microbial activity involved in material degradation and humus formation is excited, so that the garbage can be more uniformly changed into decomposed organic fertilizer, and finally discharged from a discharge hole.

The gases generated in the treatment process of the drying bin 1 and the decomposing bin 2 are uniformly collected and conveyed to external gas treatment equipment through an exhaust pipe 12, and the gas treatment equipment is used for gas treatment or resource utilization.

In addition, when the room temperature is lower than 5 ℃, auxiliary heating is needed, and the heater 8 and the heating plate 10 can be turned on to perform auxiliary heat preservation. It should be noted, however, that this auxiliary heating is not intended to raise the temperature of the stack, but is merely intended to avoid dissipation of the heat generated by the microorganisms themselves. Therefore, the temperature of the auxiliary heating is not too high, and is generally controlled to be 60 ℃ or lower.

With continued reference to fig. 1, the first material conveying mechanism 28 is disposed at the front end of the integrated processing apparatus, and a discharge port of the first material conveying mechanism 28 is connected to a feed port of the drying bin 1, for conveying the perishable garbage to be processed into the drying bin 1. The second material conveying mechanism 29 is arranged at the rear end of the integrated treatment device, and a feed inlet of the second material conveying mechanism 29 is connected with a discharge outlet of the decomposing hopper 2, and a discharge outlet of the second material conveying mechanism 29 is connected with a feed inlet of the vibratory screening machine for conveying decomposed materials output from the decomposing hopper 2 to the vibratory screening machine. The vibrating screening machine has the function of vibrating and screening the decomposed materials through the screen mesh, so that the decomposed materials meet the particle size requirement of finished products, and meanwhile, the vibrating screening machine also plays a role in further removing impurities.

The specific form of the first material conveying mechanism 28 and the second material conveying mechanism 29 is not limited, and any device capable of realizing the conveying of the perishable garbage material may be employed. In the present embodiment, both the first material conveying mechanism 28 and the second material conveying mechanism 29 employ screw conveyors.

Referring to fig. 6, taking the first material conveying mechanism 28 as an example, the screw conveyor includes a spiral pipe 282, a spiral blade 283, and a conveying drive motor 284. The spiral pipe 282 is obliquely arranged, and the conveying direction of the spiral pipe 282 is from bottom to top, so that a material inlet 281 is arranged at the lower end of the spiral pipe 282, and a material outlet 285 is arranged at the upper section of the spiral pipe. The spiral vane 283 is coaxially disposed within the spiral pipe 282, and one end thereof is driven to rotate by the conveyance driving motor 284. The outer diameter of the spiral vane 283 should be slightly smaller than the inner diameter of the spiral pipe 282 so that the material is transported from the material inlet 281 to the material outlet 285 by the transportation driving motor 284 driving the spiral vane 283 to rotate about the axis. The spiral conveying mechanism is particularly suitable for perishable garbage with high water content. Since such garbage is liable to generate precipitated liquid during the obliquely upward conveyance, the bottom of the spiral pipe 282 should be provided with a waste liquid discharge port. The second material conveying mechanism 29 is substantially similar in structure to the first material conveying mechanism 28 and will not be described again.

Referring to fig. 7, the vibratory screening mechanism 30 in this embodiment includes a screen 301, a support spring 302, and a vibration mechanism 303 built into a housing. The mesh number of the screen 301 is required to be determined according to the particle size requirement of the final discharge, the screen 301 is obliquely arranged, and the bottom of the screen 301 is supported by uniformly arranging a plurality of supporting springs 302. The vibration mechanism 303 is used for applying vibration force to the screen 301, and specifically, the vibration force can be applied to a housing or a frame by adopting an eccentric motor or other devices, and then the vibration force is transferred to the screen 301, so that the screen 301 vibrates up and down under high frequency under the elastic support of the supporting spring 302, and the materials are screened. In order to smoothly discharge both the oversize and the undersize, the upper and lower spaces of the screen 301 are respectively provided with a discharge port in the housing, the upper part is an oversize discharge port 304, and the lower part is an undersize discharge port 305.

Based on the perishable garbage treatment device shown in the figures 1-6, the invention also provides a biological drying and decomposition promoting process using the aseptic agent of the perishable garbage treatment device, which comprises the following steps:

S1, purifying, removing impurities, crushing, dehydrating and doping auxiliary materials to be processed to the perishable garbage which needs to be processed every day, thereby forming the material to be processed. The type of the added auxiliary materials can be adjusted according to actual needs, and the auxiliary materials can be one or more of straw, corncob, sawdust, chaff or vinasse, and the addition amount of the auxiliary materials is 10-15% of the total weight of the garbage.

S2, conveying all the materials to be treated obtained in the step S1 into the drying bin 1 through the first material conveying mechanism 28, and performing biological drying on the materials to be treated for 22-24 hours after the drying bin 1 finishes feeding to obtain dried materials; the stirring device 3, the first air supply device and the first air extraction and dehumidification device are started periodically in the biological drying process, so that the materials to be treated in the bin are subjected to full mixing stirring, aeration and air extraction and dehumidification intermittently; in each hour, the first air supply device and the first air extraction and dehumidification device are operated for 10-20 minutes in a linkage mode, meanwhile, the stirring device 3 is started to perform full mixing stirring on materials for 8-10 minutes in the period of the linkage operation, and the stirring device 3, the first air supply device and the first air extraction and dehumidification device are not operated in the rest time, so that the materials are kept in a static state.

S3, after the biological drying process of the S2 is finished, opening the material moving channel, starting the stirring device 3 to transfer and stack the dried material in the drying bin 1 to the feeding end of the decomposing bin 2 in a continuous feeding and discharging operation mode through the material moving channel, and enabling the material newly transferred into the decomposing bin 2 to be not mixed with the existing material in the decomposing bin 2, so that layering performance is maintained in the axial direction of the bin body.

S4, after all the materials in the drying bin 1 are transferred to the decomposing tank 2, closing the material transfer bin channel, and continuing to perform aerobic decomposing fermentation on the materials to be processed in the decomposing tank 2; in the aerobic decomposition fermentation process, the second air extraction and dehumidification device is started in the whole process to perform air extraction and dehumidification in the bin, and meanwhile, the turning device and the second air supply device are started at fixed time, and all materials to be treated are intermittently turned and aerated, wherein the aeration frequency is 10-30 minutes/hour, and the turning frequency is 1-2 times/day; when the turning device is started each time, the chain plate type turning mechanism 4 is driven by the plane running driving mechanism to gradually and axially move from the discharge end to the feed end of the decomposing tank 2, and materials with the cross section of the whole tank body at different axial positions are turned back layer by layer in the axial moving process, so that the materials in the decomposing tank 2 gradually move from the feed end to the discharge end along the axial direction and the layering property between new and old materials is always maintained; the residence time of the dried materials in the decomposing tank 2 is kept for 5-8 days, and finally the decomposed materials are output from a discharge hole of the decomposing tank 2.

S5, conveying the decomposed materials output in the S4 to the vibration screening mechanism 30 through the second material conveying mechanism 29, and outputting the decomposed organic fertilizer meeting the particle size requirement.

By the biological drying and decomposition-promoting process shown in the steps S1 to S5, no microbial inoculum is required to be added into the material to be treated in the treatment process, so that the cost can be greatly reduced. For the biological desiccation and decomposition promotion process without the addition of the microbial inoculum, two core process links are required to be controlled:

Firstly, in the biological drying process of the step S2, the materials to be treated in the bin are required to be subjected to intermittent full mixing stirring, aeration and air suction dehumidification. The method can ensure that the materials can fully obtain oxygen and maintain an aerobic environment favorable for microorganism proliferation through the short-time linkage operation of the first air supply device, the first air extraction and dehumidification device and the stirring device 3, but the aeration and the air extraction still do not exist for 40-50 min in one period (1 hour) and the stirring does not exist for 50-52 min because the operation time is short, so that the self-generated energy of microorganisms can be reserved as much as possible, and excessive loss is avoided. The retention of heat generated by the microorganism itself greatly accelerates the rate of microorganism amplification relative to an external heat source. Through tests, under the condition that the heater 8 and the heating plate 10 are not started at room temperature (20 ℃), for the original perishable garbage with the microbial biomass of about 10 ⁵ CFU/g and the water content of 70.52% -75.23%, after the corncob auxiliary materials with the total weight of 10% of the garbage are mixed, the method of intermittently carrying out full mixing stirring, aeration and air draft dehumidification in the step S2 can rapidly amplify the microbial biomass to 10 ⁷ CFU/g, and the temperature of the materials is always kept above 50 ℃, so that sufficient microbial biomass and fermentation temperature are provided for the subsequent aerobic decomposition fermentation. In the invention patent of CN110981559A, the method for continuously performing blast aeration and air draft dehumidification is used as comparison, the temperature of the material cannot be increased, the temperature is maintained at about 25-28 ℃ under the identical material and environment, the microbial biomass of the material after the final drying is not higher than 10 ⁶ CFU/g, and the water content is basically equivalent to that of the invention. Therefore, the intermittent start drying process is more suitable for the composting and decomposing process of the perishable garbage.

And secondly, a layered turning and translation heap aerobic fermentation process adopted in the decomposing tank in the step S3. The method adopts continuous ventilation aeration to remove water as much as possible, and intermittent aeration and layered turning are adopted to promote the acquisition of oxygen by the material and retain self heat generation of microorganisms as much as possible. Thus, the heat dissipation of the stack itself is reduced as much as possible while ensuring the oxygen demand of the microorganisms. Therefore, the invention can further increase the temperature and the microbial biomass of the pile body in the aerobic decomposing fermentation stage. Meanwhile, the chain plate type turning mechanism 4 is adopted to realize layered turning translation of the pile body, so that the feeding in each day can be ensured to fully realize 5-8 days of residence time, and the old and new materials are not mixed greatly. In general, under the S3 method, the temperature of the materials in the decomposing tank is kept above 55 ℃ in the whole process, and the water content of the final discharged materials can be reduced to 18.93-22.77%, and the germination index of the plant seeds is 91.58-112.08%. The method of fully mixing the materials in the thoroughly decomposed warehouse can lead to the mixing of new and old materials, and the thoroughly decomposed fermentation can not be performed, so that the germination index of the plant seeds is obviously lower than that of the invention.

In conclusion, the integrated equipment can fully realize the linkage effect of ventilation aeration, mechanical stirring, heat energy utilization, moisture removal and material decomposition, and can realize the rapid dehydration and decomposition of the perishable garbage by regulating and controlling the optimal growth and metabolism conditions of aerobic microorganisms, thereby solving the problems of large occupied area, easy malodor generation, long material dehydration and fertilizer forming period, poor fertilizer efficiency and the like in the process of fertilizing the perishable garbage.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.

Claims

1. The process is characterized in that a perishable garbage treatment device adopted in the process comprises integrated treatment equipment, a first material conveying mechanism (28), a second material conveying mechanism (29) and a vibration screening mechanism (30);

The internal bin body of the integrated treatment equipment is divided into a drying bin (1) and a decomposing bin (2), and the two bin bodies are provided with heat-insulating structures; the drying bin (1) and the decomposing bin (2) both comprise a feed inlet and a discharge outlet, and the discharge outlet of the drying bin (1) is connected with the feed inlet of the decomposing bin (2) through a material moving bin channel capable of being controlled to open and close; the drying bin (1) is internally provided with a stirring device (3) for fully mixing and stirring materials in the bin, a first air supply device for aerating and supplying oxygen to the materials in the bin and a first air extraction and dehumidification device for discharging air in the bin; the decomposing tank (2) is internally provided with a turning device for turning materials in the tank, a second air supply device for aerating and supplying oxygen to the materials in the tank and a second air extraction and dehumidification device for discharging gas in the tank; the turning device comprises a plane running driving mechanism, an adjusting mechanism and a chain plate type turning mechanism (4); the chain plate type turning mechanism (4) is arranged on the plane running driving mechanism, the plane running driving mechanism drives the chain plate type turning mechanism to move in the stacking plane of the decomposing tank (2), and the chain plate type turning mechanism (4) can obliquely extend into materials in the tank to turn and throw the materials at the position to one side close to the discharge end; the adjusting mechanism is used for adjusting the depth of the chain plate type turning mechanism (4) extending into the materials in the bin, and the adjusting range of the adjusting mechanism is required to enable the chain plate type turning mechanism (4) to be completely separated from the materials in the bin;

the first material conveying mechanism (28) is arranged at the front end of the integrated treatment equipment, and a discharge hole of the first material conveying mechanism (28) is connected with a feed hole of the drying bin (1) and is used for conveying perishable garbage to be treated into the drying bin (1);

The second material conveying mechanism (29) is arranged at the rear end of the integrated treatment equipment, a feed inlet of the second material conveying mechanism (29) is connected with a discharge outlet of the decomposing tank (2), and a discharge outlet of the second material conveying mechanism (29) is connected with a feed inlet of the vibration screening mechanism (30) and is used for conveying decomposed materials output from the decomposing tank (2) to the vibration screening mechanism (30);

the vibration screening mechanism (30) is used for carrying out vibration screening on the decomposed materials through a screen;

the perishable garbage treatment process comprises the following steps:

S2, conveying all the materials to be treated obtained in the S1 to the drying bin (1) through the first material conveying mechanism (28), and performing biological drying on the materials to be treated for 22-24 hours after the drying bin (1) finishes feeding to obtain dried materials; the stirring device (3), the first air supply device and the first air extraction and dehumidification device are started periodically in the biological drying process, so that the materials to be treated in the bin are subjected to full mixing stirring, aeration and air extraction and dehumidification intermittently; in each hour, the first air supply device and the first air extraction and dehumidification device are operated for 10-20 minutes in a linkage mode, meanwhile, the stirring device (3) is started to perform full mixing stirring on materials for 8-10 minutes in the period of the linkage operation, and the stirring device (3), the first air supply device and the first air extraction and dehumidification device are not operated in the rest time, so that the materials are kept in a standing state;

S3, after the biological drying process of the S2 is finished, opening a material moving channel, starting a stirring device (3) to transfer and stack dried materials in a drying bin (1) through the material moving channel to a feeding end of a decomposing bin (2) adopting a continuous feeding and discharging operation mode, and enabling the materials newly transferred into the decomposing bin (2) to be not mixed with the existing materials in the decomposing bin (2), so that layering performance is maintained in the axial direction of a bin body;

S4, after all materials in the to-be-dried bin (1) are transferred to the decomposing bin (2), closing the material bin transferring channel, and continuing to perform aerobic decomposing fermentation on the to-be-processed materials in the decomposing bin (2); in the aerobic decomposition fermentation process, the second air extraction and dehumidification device is started in the whole process to perform air extraction and dehumidification in the bin, and meanwhile the turning device and the second air supply device are started at fixed time to intermittently turn and aerate all materials to be treated, wherein the aeration frequency is 10-30 minutes/hour, and the turning frequency is 1-2 times/day; when the turning device is started each time, the chain plate type turning mechanism (4) is driven by the plane running driving mechanism to gradually and axially move from the discharge end to the feed end of the decomposing tank (2), and materials with the cross sections of the whole tank body at different axial positions are turned back layer by layer in the axial moving process, so that the materials in the decomposing tank (2) gradually move from the feed end to the discharge end along the axial direction and the layering property between new and old materials is always kept; the residence time of the dried material in the decomposing tank (2) is kept for 5-8 days, and finally the decomposed material is output from a discharge port of the decomposing tank (2);

S5, conveying the decomposed materials output in the S4 to the vibration screening mechanism (30) through the second material conveying mechanism (29), and outputting the decomposed organic fertilizer meeting the particle size requirement.

2. The process for treating the perishable garbage for biologically drying and decomposing the perishable garbage according to claim 1, wherein the stirring device (3) comprises stirring blades, a stirring driving motor (18) and a stirring shaft (19), the stirring blades are arranged on the stirring shaft (19) and are driven by the stirring shaft (19) to synchronously rotate, and the end part of the stirring shaft (19) is connected with an output shaft of the stirring driving motor (18); and stirring vane includes first helical blade (16), second helical blade (17) and puddler (15), and wherein first helical blade (16) and second helical blade (17) symmetry respectively install in (19) both sides, and puddler (15) are installed on (19) between first helical blade (16) and second helical blade (17).

3. The process for treating the biological desiccation and decomposition promoting perishable garbage according to claim 1, wherein the first air supply device and the second air supply device adopt the same set of air supply system and comprise an air supply pump (7) and an air supply pipe (9) which are connected, wherein the tail end of the air supply pipe (9) is divided into a plurality of air supply branches which are respectively connected with different aeration holes (32) at the bottoms of the desiccation bin (1) and the decomposition bin (2).

4. A process for the treatment of biologically dried decomposition-promoting perishable waste as claimed in claim 3, characterized in that the air supply pipe (9) is provided with a heater (8) for heating the air.

5. A process for the treatment of biologically dried and accelerated decomposition of perishable waste as claimed in claim 3, characterized in that the outer surfaces of the drying bin (1) and the decomposition bin (2) are provided with heating plates (10).

6. The process for treating the perishable garbage for biological desiccation and decomposition promotion according to claim 1, wherein the first air extraction and dehumidification device and the second air extraction and dehumidification device adopt the same set of air extraction system, and the process comprises an exhaust pipe (12) and an air extraction device which are connected, wherein the front end of the exhaust pipe (12) is divided into a plurality of exhaust branches, and the exhaust branches are respectively connected with different exhaust holes at the tops of a desiccation bin (1) and a decomposition bin (2).

7. A process for treating perishable garbage by biological desiccation and decomposition promotion according to claim 1, wherein the planar traveling driving mechanism comprises an axial sliding rail (5), a transverse sliding rail (14), an axial driving mechanism and a transverse driving mechanism; the two axial sliding rails (5) are arranged at the upper parts of the side walls of the two sides of the decomposing tank (2) in parallel; two ends of the transverse sliding rail (14) are respectively erected on the two axial sliding rails (5) and are driven by the axial driving mechanism to move along the two axial sliding rails (5); the chain plate type turning mechanism (4) is mounted on the transverse sliding rail (14) through a mounting frame (13), and is driven by the transverse driving mechanism to move along the transverse sliding rail (14).

8. The process for treating the perishable garbage by biological drying and decomposition promotion according to claim 1, wherein the chain plate type turning mechanism (4) comprises a chain plate (26) driven by two mounting rollers (27) and a plurality of turning plates (25) distributed on the plane of the chain plate (26), the mounting rollers (27) are driven by a turning driving mechanism to rotate, and the turning plates (25) on the chain plate are driven to carry materials to the highest point for turning.

9. The process for treating the perishable garbage by biological drying and decomposition promotion according to claim 1, wherein the adjusting mechanism is a turnover driving mechanism, the chain plate type turnover mechanism (4) is integrally hinged on the mounting frame (13), and is driven by the turnover driving mechanism to integrally rotate around the rotation center, so that the inclination angle of the plane of the chain plate and the depth of the materials extending into the warehouse are changed.

10. The process for treating the biological desiccation-accelerated decomposition perishable garbage according to claim 1, wherein the first material conveying mechanism (28) and the second material conveying mechanism (29) are both screw conveyors, and the screw conveyors comprise spiral pipes (282), spiral blades (283) and conveying driving motors (284); the spiral pipe (282) is obliquely arranged, the lower end of the spiral pipe (282) is provided with a material inlet (281), and the upper section is provided with a material outlet (285); the spiral blade (283) is coaxially arranged in the spiral pipe (282), and one end of the spiral blade is driven to rotate by the conveying driving motor (284) so as to convey the material from the material inlet (281) to the material outlet (285).

11. A process for the treatment of biologically dried and accelerated decomposition of perishable waste according to claim 1, characterized in that the vibrating screening means (30) comprise a screen (301), a support spring (302) and a vibrating means (303) built into the housing; the screen (301) is obliquely arranged, the bottom of the screen is supported by a plurality of supporting springs (302), the vibration mechanism (303) is used for applying vibration force to the screen (301), and the upper space and the lower space of the screen (301) are respectively provided with a discharge hole on the shell.