CN110118469A - A kind of biological dewatered system of closed house refuse and technique - Google Patents

Abstract

The invention discloses a closed type domestic garbage biological drying system, which is applied in the technical field of domestic garbage drying and disposal, and solves the technical problem of high moisture content of domestic garbage. , blowing system, odor collection system and drying control system; the drying warehouse is equipped with an inlet and outlet; In the chemical chamber, the blower fan is set outside the drying chamber; the odor collection system includes an odor suction pipe extending from the outside of the drying chamber and an exhaust fan connected with the odor suction pipe, and the drying control system includes a drying The technical effect is to use aerobic microorganisms to pile up domestic waste for rapid fermentation, evaporate the water in the domestic waste, and quickly reduce the water content of the domestic waste. Rate.

Description

A closed type domestic waste biological drying system and process

technical field

The invention relates to the technical field of domestic waste drying and disposal, in particular to a closed-type domestic waste biological drying system and process.

Background technique

With the improvement of living standards of urban people, the composition of domestic waste is becoming more and more complex, and the amount of waste is gradually increasing. However, our quality requirements for the living environment have been gradually improving, and we have paid more and more attention to the control of various types of pollution. Therefore, we need to put forward new requirements and goals for the harmlessness, reduction, and recycling of domestic waste

Daily life is often faced with the problem that waste cannot be effectively disposed of or requires a lot of manpower and financial resources. At present, most of our country uses landfill or incineration to dispose of domestic waste. Improper disposal will cause secondary pollution to the environment. Domestic waste is not only large in volume, but also has a high moisture content, generally around 75%, and a large volume and mass, which makes disposal very difficult and transportation costs are too high.

When domestic waste is incinerated to generate electricity, the high moisture content of domestic waste will affect the calorific value of incineration and affect the power generation; a domestic waste drying technology is urgently needed to reduce the water content in domestic waste.

Contents of the invention

The purpose of the present invention is to provide a closed type domestic waste biological drying system, which has the advantage of using aerobic microorganisms to quickly ferment the domestic waste and evaporate the water in the domestic waste, thereby quickly reducing the moisture content of the domestic waste .

The above-mentioned technical purpose of the present invention is achieved by the following technical solutions: a closed type domestic waste biological drying system, including a material inlet and outlet system, a drying bin, a blast system, an odor collection system and a drying control system;

The drying bin is provided with an inlet and outlet, and the inlet and outlet system includes transportation equipment and a door for opening and closing the inlet and outlet provided on the drying bin;

The blowing system includes a blowing fan and an air spray head, the air spray head and the blowing fan are connected through a pipeline, the air spray head is arranged in the drying chamber, and the blowing fan is arranged outside the drying chamber;

The odor collection system includes an odor suction pipe extending from the outside of the drying chamber to the interior of the drying chamber and an exhaust fan communicated with the odor suction pipe;

The drying control system includes a drying control host, a temperature sensor, a pressure sensor and a humidity sensor, the humidity sensor and the temperature sensor are both arranged in the drying chamber and are electrically connected to the drying control host, and the pressure sensor is arranged in the pipeline and electrically connected with the drying controller.

Through the above technical scheme, the drying warehouse is used for stacking household garbage, and the inlet and outlet are used for transportation equipment and household garbage to enter and exit the drying warehouse, making it more convenient to transport household garbage; the warehouse door is used to close the inlet and outlet, so that the drying The bin forms a closed space in order to better control the fermentation environment of domestic waste, thereby better improving the drying efficiency; the temperature sensor and the humidity sensor are used for real-time monitoring of the temperature and humidity in the drying bin, and will The monitored data is transmitted to the drying control host, and the drying control host is used to process the monitored temperature and humidity in order to control the power of the blower fan, so that the temperature and humidity in the drying chamber can reach a dynamic balance, so that domestic garbage Rapid fermentation forms a high-temperature reaction environment and reduces the moisture content of garbage through evaporation. The exhaust fan in the odor collection system is used to quickly extract the water vapor and odor from the drying chamber to improve the drying efficiency; disperse, so that oxygen can more fully enter the domestic waste, and can be more fully dissolved into the water in the drying bin, thus ensuring the oxygen concentration and fermentation efficiency, so that the water in the domestic waste can be quickly absorbed The discharge can also speed up the air circulation in the warehouse, so that the water evaporates and is discharged in the form of water vapor. The pressure sensor is set in the pipeline. When the pipeline is blocked, the pressure in the pipeline will increase. The pressure sensor can quickly transmit the pressure value to the drying controller, so that the drying controller can control the blower fan and the exhaust fan to stop working. , so as to better avoid the damage of the pipeline system due to excessive pressure.

The present invention is further configured as follows: the wall of the drying bin is provided with an insulating layer.

Through the above technical solution, the insulation layer is used to maintain the temperature in the drying bin, so that the heat in the drying bin is not easy to lose quickly, so that the moisture in the drying bin can evaporate faster, and then better remove the waste in the domestic waste. moisture.

The present invention is further configured to: further include a sewage collection system, the sewage collection system includes a water collection tank arranged at the bottom of the drying bin and a water collection well connected to the water collection tank through a pipeline, and the water collection well is connected to a drain pipe; The bottom of the water collection well is lower than the bottom of the water collection tank, and the wellhead of the water collection well is flush with the notch of the water collection tank.

Through the above technical scheme, the sump is used to introduce the sewage in the drying bin into the sump well, and the bottom of the sump well is lower than the bottom of the sump. Due to the siphon principle, the sewage in the drying bin can quickly enter the sump. In the water well; the wellhead of the water collection well is flush with the notch of the water collection tank, so that the water pressure in the water collection well can be kept in balance with that in the water collection tank, and the water level in the water collection tank can be conveniently controlled by controlling the water level in the water collection well; Due to the gravity, the water flow produces a siphon self-flow phenomenon, and the drain pipe can guide the water in the sump well to discharge quickly, thereby improving the efficiency of removing water from domestic garbage; the water in the sump well can also play a better role in the drying bin. Sealing effect, so as to better avoid the gas in the drying chamber from leaking from the water collection tank, thereby better providing a sealed space for the drying chamber, and thus ensuring the drying efficiency.

The present invention is further configured as follows: the water collecting tank is provided with a blast branch pipe, the blast branch pipe is connected with a blast main pipe, and the air spray head is provided with multiple along the length direction of the blast branch pipe, and the air spray head It is arranged in the water collection tank; the upper cover of the water collection tank is provided with a perforated cover plate, and a plurality of aeration through holes are opened on the perforated cover plate, and the air spray heads correspond to the aeration through holes one by one.

Through the above technical scheme, the air spray head is set in the water collection tank, and the perforated cover plate is used to cover the top of the water collection tank. The water collection tank can better protect the air spray head and the blast branch pipe, and prevent impurities from blocking the air spray head. ; The aeration through hole is used to supply air into the drying bin, making the aeration more uniform, improving the oxygen transfer efficiency, thereby improving the efficiency of domestic waste drying, and then improving the speed of removing water from domestic waste; The air hole can also allow water to flow into the sump, so that the water flow can be discharged quickly, and the water in the sump can play a water sealing effect on the air spray head.

The present invention is further set as: the wellhead of the water collection well is covered with a heavy-duty well cover.

Through the above technical solution, the heavy-duty manhole cover is used to prevent debris from falling into the water collection well, thereby better avoiding the clogging of the water collection well, so that the water in the drying bin can be discharged more stably; it is also convenient to open the heavy-duty manhole cover Clean up the deposited impurities in the sump.

The present invention is further configured as follows: the drying bin is provided with a sliding guide rail at the material inlet and outlet, and the bin door is slidingly matched with the sliding guide rail.

Through the above technical solution, the sliding cooperation between the door and the sliding guide rail makes the sliding of the door more stable, so that it is more convenient to open or close the material inlet and outlet, making the material in and out more convenient.

The present invention is further configured as follows: the sliding guide rail is arranged along the vertical direction, the drying chamber is provided with a traction motor, the main shaft of the traction motor is provided with a traction rope, and the traction rope is connected to the chamber door.

Through the above technical solution, the traction motor is used to pull the door to slide upwards, so that it is more convenient to open the inlet and outlet; due to gravity, the door can slide downward when there is no external traction, so that the inlet and outlet can be quickly opened. Closed, to better ensure the airtight effect of the drying chamber.

The present invention is further configured as follows: the odor suction pipe is connected with an odor collection pipe, the exhaust fan is arranged on the odor collection pipe, a condensation chamber is arranged on the odor collection pipe, and the condensation chamber is arranged on the odor collection pipe. A finned condenser is arranged in the chamber, a water storage tank is arranged under the finned condenser, and a water delivery pipe is connected to the water storage tank, and a water delivery pump is arranged on the water delivery pipe.

Through the above technical scheme, the condensation chamber provides a closed space, which prevents the water vapor from escaping into the atmosphere; the finned condenser is used to accelerate the condensation of water vapor into liquid water, so as to better separate the moisture in the odor, so as to The water resources are utilized; the water storage tank is used to temporarily store the water flow, and the water transfer pump is used to quickly pump out the water.

Another object of the present invention is to provide a new type of rapid drying process, which has the advantages of controlling the particle size of the garbage and adding conditioners appropriately, so that the heap has a better porosity, so as to improve the drying efficiency.

The above-mentioned technical purpose of the invention is achieved through the following technical solutions: control the particle size of the garbage and properly add conditioners to make the heap have better porosity so as to improve the drying efficiency.

Through the above-mentioned technical scheme, a closed type domestic waste biological drying process, the steps are as follows:

Step 1, first break the bagged household garbage, and shred the household garbage, and control the particle size of the household garbage below 300mm;

Step 2, transporting the domestic waste obtained in step 1 to the cache warehouse;

Step 3, on the basis of step 2, using the transportation device 6 described in claim 1 to transport the crushed material in the buffer bin to the drying bin 2 described in claim 1;

Step 4, on the basis of step 3, when the crushed material in the drying bin 2 described in claim 1 reaches the designed loading capacity, the bin door 7 described in claim 1 is closed, and the blast system 3 is opened , the odor collection system 15 in claim 2 is opened, and the sewage collection system 19 in claim 3 is opened;

Step 5, on the basis of step 4, continue to ferment for 1 day, so that the temperature in the drying bin rises to above 45°C; according to the temperature and oxygen content in the drying bin, the drying control system automatically adjusts the air blower and The ventilation power of the exhaust fan keeps the temperature in the drying chamber at 50-70°C, and the fermentation continues for 6-8 days;

Step 6, on the basis of step 5, the system controls the blower fan 8 and the exhaust fan 17 to run at maximum power, and maintains the ventilation time, so that the temperature in the drying chamber 2 is reduced to below 35°C. 3 is closed, the door 7 is opened, and the transport equipment 6 transports the dried material out.

Through the above technical scheme, crushing the garbage material to less than 300mm can better ensure the overall porosity of the pile, facilitate the circulation of air, and ensure the supply of oxygen; if the particle size of the garbage is larger than 300mm, it will affect the garbage capacity of the pile ;

When the temperature of the pile is 50-70°C, the activity of mesophilic bacteria is inhibited or died, and the number of thermophilic bacteria increases. The degradation ability of thermophilic bacteria to garbage is significantly higher than that of mesophilic bacteria, thereby better improving the degradation rate of garbage ; and when the temperature of the pile is maintained at 50-70°C for a period of time, the pathogenic bacteria, insect eggs and other toxic microorganisms in the pile will be killed or inactivated, thereby ensuring the harmless utilization of the dried product.

In summary, the present invention has the following beneficial effects:

1. Use various sensors to monitor the temperature, humidity and oxygen concentration in the drying bin. The drying control system can better control the operation of the blast system according to the monitoring data. Oxygen can also strengthen the heat and water vapor exchange with the outside world, so as to remove the water in domestic waste faster;

2. The odor collection system and the sewage collection system collect the odor and sewage generated during the drying process for subsequent centralized treatment, which better avoids environmental pollution;

3. The particle size of the garbage material is crushed to less than 300mm, so that the oxygen content in the pile is more sufficient, and the conditioning agent and exogenous bacterial agent are added to further improve the drying efficiency of the garbage.

Description of drawings

Fig. 1 is the overall structural representation of embodiment 1;

Fig. 2 is the structural representation of the feeding and discharging system of embodiment 1;

Fig. 3 is the structural representation of the positional relationship between the water collection well and the water collection tank of embodiment 1;

Fig. 4 is an enlarged schematic diagram of part C of Fig. 3;

Fig. 5 is an enlarged schematic diagram of part B of Fig. 2;

Fig. 6 is the structural representation of the heavy-duty manhole cover of embodiment 1 and the connection relation of water collecting well;

Fig. 7 is the structural representation of the blast system of embodiment 1;

Fig. 8 is an enlarged schematic diagram of part A of Fig. 1;

Fig. 9 is the structural representation of the connection relationship between the finned condenser and the odor collection pipe of embodiment 1;

Fig. 10 is a schematic structural diagram of the connection relationship between the door and the drying bin in Embodiment 2;

Fig. 11 is a schematic process flow diagram of embodiment 3.

Reference signs: 1. Material inlet and outlet system; 2. Drying warehouse; 3. Blast system; 4. Drying control system; 5. Material inlet and outlet; 6. Transportation equipment; 7. Storage door; 8. Blower fan ;9, jet nozzle; 10, blast main pipe; 11, drying control host; 12, temperature sensor; 13, oxygen concentration sensor; 14, humidity sensor; 15, odor collection system; 16, odor suction pipe; 17 , exhaust fan; 18, odor collection pipe; 19, sewage collection system; 20, water collection tank; 21, water collection well; 22, drainage pipe; 23, heavy manhole cover; 24, drainage pump; 26, ventilation tank; 27 , sliding guide rail; 29, sealing rubber strip; 30, traction motor; 31, blast branch pipe; 32, blast solenoid valve; 33, guide suction nozzle; 35, water guide pipe; 37, insulation layer; 38, condensation chamber; 39. Finned condenser; 40. Water storage tank; 41. Water delivery pipe; 42. Water delivery pump; 43. Pressure sensor; 44. Perforated cover plate; 45. Aeration through hole.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

Example 1:

Referring to Fig. 1, a closed biological drying system for domestic waste includes a material inlet and outlet system 1, a drying bin 2, an air blast system 3 and a drying control system 4; eight drying bins 2 are arranged side by side, and the drying bins The size of 2 is 35m*8m*6m, and the drying bin 2 is used to stack domestic garbage or organic garbage, so that the garbage can be fermented aerobically in a closed space; the side wall of the drying bin 2 is provided with an inlet and outlet 5, It is used for feeding in and out of materials, mechanical equipment or vehicles; the feeding and discharging system 1 transports the garbage to the drying bin 2 through the inlet and outlet 5, and after the drying is completed, the dried materials are transported from the drying bin 2 Blast system 3 is used to transport the air outside the drying bin 2 into the drying bin 2, so that the oxygen, temperature and water vapor outside the drying bin 2 can be exchanged with the outside, so as to ensure the temperature inside the drying bin 2 , humidity and oxygen concentration are the most suitable state for degradation and fermentation; the drying control system 4 is used to monitor the temperature, humidity and oxygen concentration in the drying chamber 2, and maintain the temperature in the drying chamber 2 by controlling the blast system 3 Oxygen concentration to ensure the efficiency of degradation fermentation.

With reference to Fig. 2, the feeding and discharging system 1 comprises transport equipment 6 and the door 7 for opening and closing the material inlet and outlet 5, the transport equipment 6 is preferably a loader, and can also be used in conjunction with an excavator and a small truck; the drying bin 2 is located at There are sliding guide rails 27 fixed at the 5 places of the material inlet and outlet, and the sliding guide rails 27 are arranged along the vertical direction. A sliding seat is fixed on the door 7 to slide and cooperate with the sliding guide rails 27, and a traction bin is fixed on the top of the drying chamber 2. The traction motor 30 of the sliding door 7, the main shaft of the traction motor 30 is wound with a traction rope, and the traction rope is fixedly connected with the door 7; Open, the inlet and outlet ports 5 of the eight drying bins 2 can be opened at the same time, so that the garbage can be transported into the drying bin 2 quickly.

Referring to Fig. 3 and Fig. 4, it also includes a sewage collection system 19, the sewage collection system 19 includes a water collection tank 20 and a water collection well 21; Multiple; multiple sumps 20 enable faster collection of water flow. The upper cover of the sump 20 is provided with a perforated cover plate 44, and a plurality of aeration through holes 45 are evenly distributed on the perforated cover plate 44. The aperture of the aeration through holes 45 is smaller than the particle diameter of the garbage, and the water flow can flow in In the sump 20 , it is better to prevent the garbage from entering the sump 20 to block the sump 20 .

Referring to Fig. 3 and Fig. 5, the water collection well 21 is arranged on the outside of the drying chamber 2, the bottom of the water collection well 21 is lower than the bottom of the drying chamber 2, and the water collection well 21 and the sump 20 are connected by a water guide pipe 35, Due to the siphon principle, the water flow in the drying bin 2 quickly flows into the water collection well 21 through the water collection tank 20; the water collection well 21 is inserted with a drain pipe 22, and the water flow produces a siphon phenomenon along the drain pipe 22 due to its own weight. It is discharged into the sewage treatment station, which is convenient for centralized treatment of sewage, so as to prevent the sewage from polluting the environment.

Referring to Fig. 6, the wellhead of the water collection well 21 is flush with the ground, and a step groove is provided at the wellhead of the water collection well 21, and a heavy-duty well cover 23 is arranged in the step groove, and the heavy-duty well cover 23 is used to block solid substances such as debris, waste or stones Falling into the water collection well 21, thereby better avoiding the water collection well 21 from being blocked; the heavy-duty manhole cover 23 can also better prevent the staff from falling into the water collection well 21, and also makes the ground relatively smooth, and the vehicle can move smoothly .

With reference to Fig. 4 and Fig. 7, blast system 3 comprises blast blower 8 and spray head 9, is all provided with blast branch pipe 31 in a plurality of sump 20, is communicated with blast main pipe 10 on the blast blower 8, blows air The branch pipe 31 communicates with the blast main pipe 10; the air spray head 9 is arranged on the blast branch pipe 31, and a plurality of air spray heads 9 are evenly arranged along the length direction of the blast branch pipe 31; the air spray heads 9 correspond to the aeration through holes 45 one by one , the perforated cover plate 44 can prevent garbage from entering the sump 20, and prevent the garbage from blocking the air nozzle 9; the air ejected from the air nozzle 9 can enter the drying chamber 2 through the aeration through hole 45, thereby better improving Oxygen concentration in drying chamber 2. The blast branch pipe 31 is provided with a blast solenoid valve 32; each drying chamber 2 is provided with at least one blast fan 8; the blast fan 8 is preferably a multi-stage centrifugal fan with a model number of C400-1.35, and the air volume of a single unit is It is 25,980 cubic meters per hour; eight centrifugal fans need to be set up in the whole system, and another one is set up as a backup.

With reference to Fig. 1 and Fig. 8, also comprise odor collection system 15, odor collection system 15 comprises odor suction pipe 16, exhaust fan 17 and odor collection pipe 18; Odor suction pipe 16, the odor suction pipe 16 extends downward from the top of the drying chamber 2, and the end of the odor suction pipe 16 towards the interior of the drying chamber 2 is fixed with a guide nozzle 33, and the guide suction pipe 16 faces away from the odor suction pipe 16 The size of the direction increases gradually. The odor collection pipe 18 connects a plurality of odor suction pipes 16 in parallel, so that the odor is sucked from multiple positions of the drying bin 2, so that the water vapor in the drying bin 2 is exhausted faster.

With reference to Fig. 9, an insulating layer 37 is fixed in the wall of the drying bin 2, and the insulating layer 37 is made of insulating sponge, which has good thermal insulation performance, so that the insulating layer 37 can better avoid drying bin 2. The heat in the drying chamber is dissipated, so that the temperature in the drying chamber 2 can be better controlled; the water in the drying chamber 2 can be evaporated into water vapor faster, and then the water vapor can be quickly exhausted by the exhaust fan 17 to the Drying chamber 2 outside.

With reference to Fig. 9, the odor collection pipe 18 is communicated with a condensation chamber 38, the top of the condensation chamber 38 is fixed with a finned condenser 39, the bottom of the condensation chamber 38 is provided with a water storage tank 40, and the water storage tank 40 is connected with a water delivery channel. The water pipe 41 is provided with a water delivery pump 42 on the water delivery pipe 41, and the water delivery pump 42 is used to transfer the water in the water storage tank 40 to the sewage treatment station. The exhaust fan 17 is arranged on the odor collection pipe 18, and the exhaust fan is arranged on the side of the condensation chamber away from the drying chamber, and the exhaust fan 17 transmits the odor to the In the odor treatment equipment, after the odor is treated, it is discharged into the atmosphere to avoid pollution to the environment; at the same time, the gas composition in the drying chamber 2 can be better controlled to better improve the drying efficiency.

Referring to Fig. 1 and Fig. 7, the drying control system 4 comprises a drying control host 11, a temperature sensor 12, an oxygen concentration sensor 13, a humidity sensor 14 and a pressure sensor 43, and the temperature sensor 12, the oxygen concentration sensor 13 and the humidity sensor 14 are all fixed Set in the drying bin 2, the pressure sensor 43 is fixedly set in the main blast pipe 10 and the odor collection pipe 18; the drying control host 11 is connected with the temperature sensor 12, the oxygen concentration sensor 13, the humidity sensor 14, and the pressure sensor 43 , traction motor 30 (referring to Fig. 2), blower fan 8 and exhaust fan 17 are all electrically connected; Oxygen concentration sensor 13 is preferably the 2FO sensor of city technology company CiTicel series, and humidity sensor 14 is preferably resistive lithium chloride hygrometer , the temperature sensor 12 is preferably an industrial temperature sensor of model MS9-1 produced by Shenzhen Topsen Sensing Co., Ltd., and the pressure sensor 43 is preferably a diffused silicon pressure transmitter DATA-52 series.

With reference to Fig. 1 and Fig. 7, pressure sensor 43 is used for detecting the air pressure in blast main pipeline 10 and odor collection pipe 18, when the pipeline in blast system 3 and odor collection system 15 was blocked, the air pressure in pipeline The air pressure increases; the pressure sensor 43 transmits the pressure value to the drying control host 11, and the drying control host 11 controls the blower fan 8 and the exhaust fan 17 to stop working, thereby better avoiding the blower system 3 and odor collection A condition in which pipes in system 15 are damaged due to excessive pressure.

With reference to Fig. 1 and Fig. 5, after the drying is completed, the drying control host 11 controls the blower fan 8 to close, the exhaust fan 17 and the drainage pump 24 continue to work, and the traction motor 30 (refer to Fig. 2 ) opens the door 7, Then transport equipment 6 transports the decomposed garbage out; after the water vapor in the drying bin 2 is drained by the exhaust fan 17 and the drain pump 24, the drying control host 11 controls the exhaust fan 17 and the drain pump 24 to stop working, and then The transportation equipment 6 transports the new garbage into the drying bin 2, so that the cycle can be repeated, and the drying production can be carried out continuously

Example 2:

Referring to Fig. 10 , a closed type domestic waste biological drying system differs from Embodiment 1 in that the sliding guide rail 27 is arranged along the horizontal direction, two sliding guide rails 27 are arranged in parallel, and the door 7 and the sliding guide rail 27 Sliding fit; the doors 7 of the two adjacent drying chambers 2 are respectively arranged on two sliding guide rails 27, and the opposite sides of the two adjacent doors 7 are fixed with sealing rubber strips 29, and the sealing rubber strips 29 Made of rubber, the sealing rubber strip 29 seals the gap between the two chamber doors 7, which improves the sealing performance of the chamber door 7 to the drying chamber 2 better. The drying bin 2 is fixed with a traction motor 30 that pulls the door 7 to slide. The main shaft of the traction motor 30 is wound with a traction rope. The side of the drying chamber 2 far away from the traction motor 30 is connected with a reversing wheel, and the traction rope is wound on the reversing wheel; the forward rotation of the traction motor 30 can drive the door 7 to open, and the reverse rotation can drive the door 7 to close .

Referring to Fig. 9, when it is necessary to open the inlet and outlet 5, the door 7 slides to the adjacent door 7, so that the doors 7 of the two adjacent drying bins 2 can only open one door 7 at a time, so that One drying bin 2 can carry out material feeding and discharging, and the other drying bin 2 can carry out drying processing normally, so that the drying system does not need to be completely shut down, and can run stably, reducing the idle time of the equipment, and the dried garbage can be continuously dried. output, and maximize the utilization of transport equipment 6.

Example 3:

Referring to Fig. 1 and Fig. 11, a closed bio-drying process of domestic waste, the steps are as follows:

Step 1, first break the bagged household garbage, and shred the household garbage, and control the particle size of the household garbage below 300mm;

Step 2, transporting the domestic waste obtained in step 1 to the cache warehouse;

Step 3, on the basis of step 2, using the transportation equipment 6 described in claim 1 to transport the crushed material in the buffer bin to the drying bin 2 described in claim 1, the transportation equipment 6 is preferably loaded machine;

Step 4, on the basis of step 3, when the mixture in the drying bin 2 reaches the designed loading capacity, the size of the pile is 25m*5m*4m, and the drying control host 11 controls the traction motor 30 to move the bin door 7 Close; then the drying control host 11 controls the blower system 3 to open, the odor collection system 15 is opened, the sewage collection system 19 is opened, then the door 7 is closed, and the drying process begins;

Step 5, on the basis of step 4, continue to ferment for 1 day, so that the temperature in the drying bin 2 rises above 45°C; according to the temperature and oxygen content in the drying bin 2, the drying control system automatically adjusts the blast The ventilation power of the fan 8 and the exhaust fan 17 keeps the temperature in the drying chamber 2 at 50-70°C, and the fermentation continues for 6-8 days;

Step 6, on the basis of step 5, the system controls the blower fan 8 and the exhaust fan 17 to run at maximum power, and maintains the ventilation time, so that the temperature in the drying chamber 2 is reduced to below 35°C. 3 is closed, the warehouse door 7 is opened, and the transport equipment 6 transports the dried materials out;

Step 7, and then repeat steps 3 to 6, so that the cycle is repeated, and the drying process is carried out continuously.

This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications to this embodiment without creative contribution as required after reading this specification, but as long as they are within the rights of the present invention All claims are protected by patent law.

Claims (9)

1. A closed-type domestic waste biological drying system is characterized in that it includes an inlet and outlet system (1), a drying bin (2), an air blowing system (3), an odor collection system (15) and a drying control system. system(4); The drying bin (2) is provided with an inlet and outlet (5), and the inlet and outlet system (1) includes a transportation device (6) and a device for opening and closing the inlet and outlet provided on the drying bin (2). (5) the door (7); Described blasting system (3) comprises blower fan (8) and jet nozzle (9), and described jet nozzle (9) is communicated with blast fan (8) by pipeline, and described jet nozzle (9) is arranged on dry In the chemical chamber (2), the blower fan (8) is located outside the drying chamber (2); The odor collection system (15) includes an odor suction pipe (16) extending from the outside of the drying chamber (2) to the interior of the drying chamber (2) and an exhaust fan (17) communicated with the odor suction pipe (16). ); The drying control system (4) includes a drying control host (11), a temperature sensor (12), a pressure sensor (43) and a humidity sensor (14), and the humidity sensor (14) and the temperature sensor (12) are both Arranged in the drying chamber (2) and electrically connected with the drying control host (11), the pressure sensor (43) is arranged in the pipeline and electrically connected with the drying control host (11), and the pressure sensor (43) is arranged at In the pipeline of blast system (3) and odor collection system (15) and is electrically connected with drying control host (11); (11) Electrical connection. 2. The closed type domestic waste biological drying system according to claim 1, characterized in that, the wall of the drying bin (2) is provided with an insulating layer (37). 3. A closed type domestic waste biological drying system according to claim 1, characterized in that it also includes a sewage collection system (19), and the sewage collection system (19) includes The sump (20) at the bottom and the sump well (21) communicated with the sump (20) by a pipeline, the sump (21) is communicated with a drainpipe (22), and the drainpipe (22) is provided with Drainage pump (24); the bottom of the water collection well (21) is lower than the bottom of the water collection tank (20), and the wellhead of the water collection well (21) is flush with the notch of the water collection tank (20). 4. A closed type domestic waste biological drying system according to claim 3, characterized in that, a blowing branch pipe (31) is arranged in the water collection tank (20), and the blowing branch pipe (31) is It is communicated with the blast main pipeline (10), and the air spray head (9) is provided with multiple along the length direction of the blast branch pipe (31), and the air spray head (9) is arranged in the sump (20); The upper cover of the water collection tank (20) is provided with a perforated cover plate (44), and the perforated cover plate (44) is provided with a plurality of aeration through holes (45), and the air spray head (9) and the aeration through hole ( 45) One-to-one correspondence. 5 . The closed type domestic waste biological drying system according to claim 3 , characterized in that, the wellhead of the water collection well ( 21 ) is covered with a heavy-duty well cover ( 23 ). 6. A closed type domestic waste biological drying system according to claim 1, characterized in that the drying bin (2) is provided with a sliding guide rail (27) at the inlet and outlet (5), so that Describe warehouse door (7) and slide guide rail (27) sliding to cooperate. 7. A closed type domestic waste biological drying system according to claim 6, characterized in that, the sliding guide rail (27) is arranged along the vertical direction, and the drying bin (2) is provided with a traction The motor (30), the main shaft of the traction motor (30) is provided with a traction rope, and the traction rope is connected with the door (7). 8. A kind of closed domestic garbage biological drying system according to claim 1, characterized in that, the odor suction pipe (16) is communicated with an odor collection pipe (18), and the exhaust fan ( 17) It is arranged on the odor collection pipe (18), and the said odor collection pipe (18) is provided with a condensation chamber (38), and said condensation chamber (38) is provided with a finned condenser (39) A water storage tank (40) is provided under the finned condenser (39), and the water storage tank (40) is connected with a water delivery pipe (41), and a water delivery pump (42) is provided on the water delivery pipe (41). 9. A closed type domestic waste biological drying process, characterized in that the steps are as follows: Step 1, first break the bagged household garbage, and shred the household garbage, and control the particle size of the household garbage below 300mm; Step 2, transporting the domestic waste obtained in step 1 to the cache warehouse; Step 3, on the basis of step 2, using the transportation equipment (6) described in claim 1 to transport the crushed material in the buffer bin to the drying bin (2) described in claim 1; Step 4, on the basis of step 3, when the crushed material in the drying bin (2) described in claim 1 reaches the designed loading capacity, the bin door (7) described in claim 1 is closed, and the drum The wind system (3) is opened, the odor collection system (15) in claim 2 is opened, and the sewage collection system (19) in claim 3 is opened; Step 5, on the basis of step 4, continue to ferment for 1 day, so that the temperature in the drying bin rises to above 45°C; according to the temperature and oxygen content in the drying bin, the drying control system automatically adjusts the air blower and The ventilation power of the exhaust fan keeps the temperature in the drying chamber at 50-70°C, and the fermentation continues for 6-8 days; Step 6. On the basis of step 5, the system controls the blower fan (8) and the exhaust fan (17) to run at maximum power, and maintain the ventilation time, so that the temperature in the drying chamber (2) is reduced to below 35°C. The blast system (3) is closed, the door (7) is opened, and the transport equipment (6) transports the dried materials out.