Pretreatment garbage bin for household garbage incineration power generation and garbage pretreatment method

Abstract

The invention provides a pretreatment garbage bin for household garbage incineration power generation and a garbage pretreatment method. The pretreatment garbage bin comprises a garbage bin, two sunken garbage pools adjacently arranged on the ground of the garbage bin and a bridge crane erected on the sunken garbage pools, and transverse partition walls are integrally poured on the front portions in the sunken garbage pools; a longitudinal partition wall is integrally poured on the rear portion of the sunken garbage pool and divides the sunken garbage pool into a front part, a middle part and a rear part, a percolating plate is laid on the bottom face of the sunken garbage pool, a transverse partition wall divides the front part of the sunken garbage pool into an upper-layer fermentation space and a lower-layer space, and a sieve plate cover with a vibrator is installed on the top face of the upper-layer fermentation space. A plurality of sets of hydraulic push rods are arranged in the lower-layer space side by side, a double-shaft motor is arranged at the front end of each hydraulic push rod, a scraper is fixedly connected to a motor shaft, the sunken garbage pool is divided into a middle fermentation space and a rear incineration garbage feeding area through the longitudinal partition wall, and the bridge crane is provided with a grab bucket. Therefore, the household garbage incineration heat value is improved.

Description

Technical Field

[0001] The invention belongs to the field of domestic waste treatment and comprehensive utilization, and in particular designs a pre-treatment garbage bin for domestic waste incineration power generation and a garbage pre-treatment method. Background Art

[0002] With the development and progress of society and the acceleration of urbanization, the problem of domestic waste has become more and more prominent, causing serious impact on the environment, so the resource utilization of waste has become the focus of people's attention, and many cities have formulated and implemented a waste classification system. The resource utilization of waste can recycle waste, thereby reducing the demand for natural resources, reducing pollution to the environment, and promoting economic development.

[0003] Incineration of domestic waste for power generation is an emerging environmentally friendly new energy industry and an important way to realize waste resource utilization. The clean energy generated by waste incineration power generation technology is used to replace traditional energy, which can effectively reduce carbon dioxide and various harmful gas emissions, and the volume of domestic waste after incineration is reduced by 95%, which can greatly reduce landfills, save land resources and protect the environment; in addition to generating electricity, the heat energy generated during the incineration process of waste incineration power generation technology can also provide a reliable heat source for the surrounding areas, and some of the slag generated after incineration can also be recycled.

[0004] The biggest characteristics of domestic waste are low calorific value and high moisture content. The calorific value and moisture content of domestic waste are negatively correlated. The higher the moisture content of the waste, the more heat is taken away by water vaporization during incineration. Therefore, dehydration measures must be taken before waste incineration. The commonly used dehydration method is pile fermentation dehydration, which is to transport the waste to the incineration plant and dump it into the garbage bin, pile it up for fermentation and dehydration. This method is the cheapest, but the dehydration effect is limited. In order to improve the dehydration efficiency, various aerobic fermentation methods have emerged, and the efficiency has been improved, but the cost is high. Summary of the invention

[0005] The object of the present invention is to provide a pre-treatment garbage bin for domestic waste incineration power generation, which can accelerate the dehydration efficiency of domestic waste and thus improve the calorific value of domestic waste incineration.

[0006] To achieve the above-mentioned purpose, the technical solution of the present invention is a pre-treatment garbage bin for incineration power generation of domestic waste, comprising a garbage bin, two adjacent sunken garbage pools arranged on the ground of the garbage bin, and a bridge crane mounted on the sunken garbage pools. The front part of the sunken garbage pool is integrally cast with a transverse partition wall, and the rear part is integrally cast with a longitudinal partition wall, which divides the sunken garbage pool into three parts: front, middle and rear. The bottom of the sunken garbage pool is paved with a seepage plate, and a plurality of parallel drainage grooves are arranged at the lower part of the seepage plate. The bottom of the drainage groove is inclined and continuously descends from the front to the rear. A leachate discharge groove is arranged at the rear side of the sunken garbage pool, and the plurality of drainage grooves are connected with the leachate discharge groove. The leachate discharge groove is used to collect and discharge the collected leachate into the garbage bin. The front side of the sunken garbage pool is the feeding side, and the top surface of the feeding side wall is a long gentle slope with a slope of 1%. The transverse partition wall divides the front part of the sinking garbage pool into an upper space and a lower space. A movable baffle is vertically arranged at the rear end of the upper space. The movable baffle, the transverse partition wall and the side wall of the sinking garbage form an upper fermentation space with an open top. A sieve plate cover with a vibrator is installed on the top surface of the upper fermentation space. The height of the movable baffle is lower than the front side wall of the sinking garbage pool, so that the sieve plate cover is arranged obliquely. Several groups of hydraulic push rods are arranged in parallel in the lower space. A double-axis motor is arranged at the front end of the hydraulic push rod. A scraper is fixedly connected to the motor shaft. The height of the scraper is limited to the amount that it can enter the lower space when it is in a vertical state. The longitudinal partition wall divides the sinking garbage pool into a middle fermentation space and a rear garbage incineration feeding area. The height of the longitudinal partition wall is half of the sinking garbage pool. The bridge crane is provided with a grab bucket for clamping garbage.

[0007] The sieve plate cover comprises a frame and a sieve plate. The upper parts of the left and right side walls of the upper fermentation space are integrally fixedly connected with an obliquely arranged equipment slot. The shape of the frame matches the top surface of the sunken garbage pool. When the left and right side frames of the frame are placed on the equipment slot, the upper end of the frame is flush with the feeding side of the sunken garbage pool, and the lower end is flush with the upper end of the movable baffle. A number of springs are installed in the equipment slot, and the other end of the spring is fixedly connected to the frame. A vibrator is installed at the front end of the frame, and the vibrator is located in the equipment slot. A support platform is arranged at the lower end of the inner wall of the frame of the frame. The sieve plate is installed on the inner frame of the frame, and its shape matches the shape of the inner frame of the frame. The bottom surface is open, and the top surface is divided into two adjacent parts, one part is a smooth steel plate, and the other part is a sieve plate with rectangular units. The area ratio between the two is 1:2, and the mesh aperture of the sieve plate is 5X20cm.

[0008] A wing plate is integrally arranged on the outer periphery of the top surface of the sieve plate, the wing plate is overlapped on the top surface of the frame, and a hanging ring is arranged on the wing plate.

[0009] The upper end of the main body of the scraper is fixedly connected to the motor shaft, the main body of the scraper is a plate-like structure, the lower end is bent outward, rake teeth are arranged at equal intervals on the lower end, the rake teeth and the scraper main body form an angle of 45 degrees, and a plurality of second rake teeth are arranged at equal intervals on the upper end of the main body of the scraper, and the second rake teeth are arranged in a staggered corresponding manner. The height of the second rake teeth is one third of the height of the main body of the scraper.

[0010] The left and right side walls of the sunken garbage pool are provided with longitudinal grooves, and movable baffles are inserted into the longitudinal grooves. The bottom ends of the movable baffles are provided with a plurality of slots in parallel for the outflow of garbage leachate.

[0011] The top surface of the transverse partition wall is a sloped surface, and the rear end is the lowest end.

[0012] An exhaust pipe is buried in the upper part of the rear side wall of the sunken garbage pool, and the exhaust pipe is connected to the secondary air pipe of the incinerator; a negative pressure pipe is arranged on the wall of the garbage warehouse, and the negative pressure pipe is connected to the primary air pipe of the incinerator. The negative pressure pipe is used to maintain a negative pressure state in the garbage warehouse to prevent odor from overflowing and provide primary air for the incinerator.

[0013] The entrance of the garbage warehouse is provided with an air curtain and an automatic fast-closing rolling shutter door.

[0014] An air inlet pipe is arranged at the bottom of the front side of the sunken garbage pool corresponding to the drainage groove.

[0015] A method for pre-processing garbage in a garbage bin comprises the following steps: 1) Set up a garbage warehouse, and set up two sinking garbage pools adjacent to each other in the garbage warehouse. The two sinking garbage pools operate synchronously or alternately; 2) Use a garbage truck to dump garbage into any of the sinking garbage pools. When dumping garbage, the garbage falls on the sieve cover of the upper fermentation space and is diverted by the vibration screening of the sieve cover. Part of the garbage falls into the upper fermentation space below, and the rest falls into the middle fermentation area of ​​the sinking garbage pool. Stop dumping garbage until the garbage in the middle fermentation area reaches one-half. The upper fermentation space is used to quickly breed aerobic microorganisms, and the garbage in the upper fermentation space ferments for 20 to 30 hours. 3) When the garbage in the upper fermentation space reaches the fermentation time, open the movable baffle and use the grab bucket to put the fermented garbage into the middle fermentation area. The fermented garbage in the upper fermentation space carries a large number of aerobic microorganisms into the middle fermentation area and mixes with the original garbage in the period to form a new fermentation environment with sufficient air. 4) Continue to dump garbage into the garbage pool until the middle fermentation area is full. The garbage in the middle fermentation area ferments for 40 to 80 hours. The scraper is used to stir it every 20 hours to stir and mix the garbage with a high degree of fermentation at the bottom with the garbage in the middle and upper parts, which accelerates the spread of microorganisms and the dissipation of fermentation heat and moisture. 5) When the garbage in the middle fermentation area reaches the fermentation time, the grab bucket will be used to transfer the garbage to the incineration garbage feeding area.

[0016] The beneficial effects of the present invention are as follows: the garbage bin and garbage pretreatment method of the present invention utilize the screening of domestic garbage to screen out garbage raw materials that are conducive to rapid fermentation of microorganisms, and construct an environment that is conducive to rapid reproduction of microorganisms. Combined with the characteristics of microbial reproduction, aerobic microorganisms are rapidly reproduced, and the obtained garbage containing a large number of microorganisms is put into relatively loosely stacked garbage, thereby constructing an environment with sufficient oxygen supply that can meet the development of aerobic microorganisms, thereby rapidly fermenting a large amount of garbage, accelerating the dehydration of domestic garbage, and increasing the calorific value of garbage during subsequent garbage incineration, while recycling the energy generated by garbage fermentation to assist garbage incineration. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the structure of the leachate guide trough and the discharge trough of the present invention.

[0019] Figure 3 It is a schematic diagram of the scraper structure of the present invention.

[0020] Figure 4 It is a schematic diagram of the structure of the sieve plate cover of the present invention. DETAILED DESCRIPTION

[0021] like Figures 1 to 4 As shown, a pre-treatment garbage bin for incineration of domestic waste for power generation includes a garbage bin, two adjacent sunken garbage pools 1 arranged on the ground of the garbage bin, and a bridge crane 2 mounted on the sunken garbage pools 1. The garbage bin is a fully enclosed structure, and an air curtain and an automatic fast-closing roller shutter door are arranged at the entrance to prevent the garbage odor from overflowing and affecting the surrounding environment. A negative pressure pipeline is arranged on the wall of the garbage bin, and the negative pressure pipeline is used to maintain a slightly negative pressure state outside the garbage bin to prevent the odor from overflowing. The negative pressure pipeline can be connected to the primary air duct of the incinerator to provide primary air for the incinerator, and can also be connected to a deodorizing device to discharge into the atmosphere. A reasonable choice is made according to the actual situation when using it. Through the above design, the working environment of the garbage incineration power plant can be effectively guaranteed.

[0022] In this embodiment, the sinking garbage pool 1 is 37 meters long and 12 meters wide, and the bottom elevation of the garbage pool is minus 5 meters. The effective storage capacity of the two garbage pools is 12,000 cubic meters, which can store about 5,000 tons of garbage, ensuring the garbage usage of all incinerators for more than 5 to 7 days. The front part of the sinking garbage pool 1 is integrally cast with a horizontal partition wall 11, and the rear part is integrally cast with a longitudinal partition wall 12, which divides the sinking garbage pool into three working areas, front, middle and rear. The bottom of the sinking garbage pool is paved with a seepage plate 13, and the seepage A plurality of parallel drainage grooves 131 are arranged at the lower part of the plate 13. The bottom surface of the drainage grooves 131 is inclined and continuously descends from the front to the back. A leachate discharge groove 132 is arranged at the rear side of the sunken garbage pool 1. The plurality of drainage grooves 131 are connected to the leachate discharge groove 132. The leachate discharge groove is used to collect and discharge the collected leachate into the garbage bin. The front side of the sunken garbage pool 1 is the feeding side. The top surface of the feeding side wall is a long gentle slope with a slope of 1% to ensure that the residual water in the unloading hall automatically flows into the garbage pool. An exhaust pipe is buried in the upper part of the rear side wall of the sunken garbage pool. The exhaust pipe is connected to the secondary air pipe of the incinerator to introduce the combustible gas generated by fermentation in the garbage pool into the incinerator. On the one hand, the calorific value of the combustible gas can be used, and on the other hand, the amount of combustible gas generated in the garbage pool can be controlled to ensure production safety.

[0023] An air inlet pipe is provided at the corresponding guide groove at the front bottom of the sunken garbage pool to inject air into the garbage pool, adjust the air in the garbage, and ensure the fermentation effect.

[0024] The transverse partition wall 11 divides the front part of the sinking garbage pool 1 into an upper space and a lower space. A movable baffle 14 is vertically arranged at the rear end of the upper space. The movable baffle 14, the transverse partition wall 11 and the side wall of the sinking garbage form an upper fermentation space with an open top surface. The left and right side walls of the sinking garbage pool are provided with longitudinal grooves, and the movable baffles are inserted into the longitudinal grooves. The bottom end of the movable baffle is arranged in parallel with a plurality of slots 141 for the garbage leachate to flow out of the upper fermentation space. The top surface of the transverse partition wall is a slope surface, and the rear end is the most The lower end is sloped to facilitate the flow of garbage leachate to the slots. A sieve plate cover 15 with a vibrator is installed on the top surface of the upper fermentation space. The height of the movable baffle 14 is lower than the front side wall of the sinking garbage pool 1, so that the sieve plate cover is obliquely arranged. The inclination angle of the sieve plate cover can be flexibly adjusted according to the shape of the garbage pool. The sieve plate cover includes a frame 31 and a sieve plate 32. The upper part of the left and right side walls of the upper fermentation space is integrally fixedly connected with an obliquely arranged equipment slot 16. The shape of the frame 31 matches the top surface of the sinking garbage pool. When the left and right side frames of the frame 31 are placed on the equipment slot 16, the upper end of the frame 31 is flush with the feeding side of the sinking garbage pool, and the lower end is flush with the upper end of the movable baffle to ensure the smooth passage of garbage. A plurality of springs 33 are installed in the equipment slot 16, and the other end of the spring 33 is fixedly connected to the frame 31. A vibrator 34 is installed at the front end of the frame, and the vibrator 34 is located in the equipment slot. A support platform is set at the lower end of the inner wall of the frame 31, and the sieve plate 32 is installed on the inner frame of the frame, and its shape matches the shape of the inner frame of the frame. The bottom surface The sieve plate 32 is open and has a top surface divided into two adjacent parts, one of which is a smooth steel plate and the other is a sieve plate with rectangular units. The area ratio of the two parts is 1:2. The different areas of the two parts ensure that the most garbage is stacked in the middle. The advantage of more garbage in the middle is that when the garbage in the middle is too high, it can naturally slide to both sides. The sieve plate 32 has a sieve mesh diameter of 5X20cm. A wing plate 35 is integrally provided on the outer periphery of the top surface of the sieve plate 32. The wing plate 35 is overlapped on the top surface of the frame. A hanging ring is provided on the wing plate 35 to facilitate the grab bucket to hang the sieve plate and change the direction of the sieve plate.

[0025] Several groups of hydraulic push rods 161 are arranged in parallel in the lower space. A double-shaft motor 162 is arranged at the front end of the hydraulic push rod 161. A scraper 16 is fixedly connected to the motor shaft. The height of the scraper 16 is limited to the height that can enter the lower space when it is in a vertical state. The upper end of the main body of the scraper 16 is fixedly connected to the motor shaft. The main body of the scraper is a plate-like structure, and the lower end is bent outward. Rake teeth 163 are arranged at equal intervals on the lower end. The rake teeth 163 form an angle of 45 degrees with the scraper main body. Several second rake teeth 164 are arranged at equal intervals on the upper end of the scraper main body. The second rake teeth 164 are arranged in a staggered corresponding manner with the rake teeth 163. The height of the second rake teeth 164 is one-third of the height of the main body of the scraper. The scraper is used to turn over and sort out the garbage in the middle fermentation space.

[0026] The longitudinal partition wall 12 divides the sunken garbage pool into a middle fermentation space and a rear incineration garbage feeding area. The height of the longitudinal partition wall 12 is half of the sunken garbage pool. The middle fermentation space is used for garbage fermentation, and the rear incineration garbage feeding area is used to store fermented and dehydrated garbage in preparation for incineration.

[0027] The bridge crane 2 is provided with a grab bucket 21 for clamping the garbage and assisting in completing each link of the garbage fermentation and dehydration.

[0028] The garbage pretreatment method of the garbage bin of the present invention is as follows: a garbage bin is provided, and two sunken garbage pools are adjacently provided in the garbage bin, and the two sunken garbage pools operate synchronously or alternately; when starting work, a garbage truck is used to dump garbage into the sunken garbage pool, and the garbage first falls on the sieve plate cover of the upper fermentation space, the frame of the sieve plate cover is connected with the spring in the equipment slot on the side wall of the garbage pool, a vibrator is installed on the frame, and the sieve plate cover vibrates under the action of the vibrator and the spring, so that the garbage is screened and moved on the vibrating screen, a part of the sieve plate installed on the sieve plate cover is a sieve mesh composed of a plurality of rectangular sieve hole units, and the other part is a smooth steel plate, so that the screened garbage can be stacked on one side of the upper fermentation space, and the advantage of such a setting is that firstly, after dense stacking, the garbage is physically dehydrated by the action of gravity, and secondly, the garbage in the upper fermentation space can be evenly distributed, specifically, when one side is almost full, the direction of the sieve plate is turned to cover the smooth steel plate so that the newly screened garbage is filled to the other side, thereby reducing the number of times the grab bucket sorts the garbage and improving Work efficiency: the garbage screened in the upper fermentation space is mainly small-volume garbage, and the water content is often relatively high. After stacking, the gaps between the garbage are small, so it is easy to heat up and the microbial content is high, so the microorganisms can reproduce rapidly. The purpose of setting up the upper fermentation space is to use the screening of garbage and the establishment of the environment to quickly and massively reproduce microorganisms. The garbage in the upper fermentation space ferments for 20 to 30 hours. The reason is that when the environment is suitable, the microorganisms do not need to consume a lot of oxygen in the early stage of mass reproduction. Therefore, the 20-30-hour fermentation process is to ensure that the microorganisms reproduce rapidly and avoid oxygen consumption restrictions to maximize efficiency. The garbage that does not fall into the upper fermentation space enters the middle fermentation area. Since they are all relatively large garbage, there are naturally more gaps when they are stacked. The distribution and accumulation of garbage can also be adjusted with the help of grab buckets. Since the garbage in the upper fermentation space needs to be put into the middle fermentation area after the fermentation is completed, the maximum amount of garbage in the middle fermentation area does not exceed one-half. If it is about to exceed, it is necessary to stop dumping the garbage or put it into the adjacent garbage pool.After the fermentation in the upper fermentation space is completed, open the movable baffle or use a grab bucket to put the garbage in it into the middle fermentation area. It should be noted here that when the amount of garbage entering the warehouse is large, the fermentation time of the garbage in the upper fermentation space is basically the same, and all of it can be put into the middle fermentation area. If the amount of garbage entering the warehouse is small, the garbage in the upper fermentation space may be put in at different times. The garbage put in earlier can be put into the middle fermentation area first according to the garbage stacking situation. This is the advantage of the sieve plate having two different structural settings. After the garbage in the middle fermentation area is mixed, the garbage in the upper fermentation space carries a large number of microorganisms and falls on the garbage in the middle fermentation area. Since the original garbage stacking gap in the middle fermentation area is large, sufficient air is guaranteed. If necessary, the air flow can be accelerated through the air inlet pipe, which can further accelerate the reproduction rate of microorganisms. Microorganisms can decompose organic matter in the garbage faster, produce combustible gas and a large amount of leachate, and accelerate the garbage dehydration process. To improve the calorific value of garbage incineration, if the garbage in the upper fermentation space does not fill the middle fermentation area, the garbage can be put in until it is full and then the garbage can be put in. The garbage in the middle fermentation area is fermented for 40 to 80 hours, and the scraper is used to stir it once every 20 hours of fermentation. There are two purposes for setting the scraper in the lower space. One is that the garbage falling into the middle fermentation area may slide into the lower space with the garbage stacking, and it is necessary to use the scraper to push it out to facilitate the subsequent transportation of the grab bucket. More importantly, the scraper can be driven by a dual-axis motor to rotate to achieve the stirring of the garbage in the middle fermentation area, which can increase oxygen permeability, and at the same time, the water and heat generated by the fermentation of the bottom garbage can be dissipated outward, and at the same time, the microorganisms in the area with a higher degree of fermentation at the bottom of the garbage can be transferred upward to accelerate the overall fermentation process, thereby ensuring the rapid decomposition and dehydration of domestic garbage. After the garbage in the middle fermentation area reaches the fermentation time, the grab bucket is used to transfer the garbage in it to the incineration garbage feeding area. ;

[0029] After adopting the garbage bin and garbage pretreatment method of the present invention, the aerobic fermentation speed of domestic garbage is significantly increased, the moisture content of domestic garbage can be greatly reduced in a short period of time, and the calorific value of garbage incineration can be improved. Compared with the traditional simple stacking natural fermentation dehydration efficiency is higher.

Claims

1. A pre-treatment garbage bin for domestic waste incineration power generation, characterized in that: It includes a garbage warehouse, two adjacent sunken garbage pools set on the ground of the garbage warehouse, and a bridge crane erected on the sunken garbage pools. The front part of the sunken garbage pool is integrally cast with a transverse partition wall, and the rear part is integrally cast with a longitudinal partition wall, which divides the sunken garbage pool into three parts: front, middle and rear. The bottom of the sunken garbage pool is paved with a seepage plate, and a plurality of parallel drainage grooves are arranged at the lower part of the seepage plate. The bottom of the drainage groove is inclined and continuously descends from the front to the rear. A leachate discharge groove is arranged at the rear side of the sunken garbage pool, and the plurality of drainage grooves are connected with the leachate discharge groove. The leachate discharge groove is used to collect and discharge the collected leachate into the garbage bin. The front side of the sunken garbage pool is the feeding side, and the top surface of the feeding side wall is a long gentle slope with a slope of 1%. The transverse partition wall divides the front part of the sinking garbage pool into an upper space and a lower space. A movable baffle is vertically arranged at the rear end of the upper space. The movable baffle, the transverse partition wall and the side wall of the sinking garbage form an upper fermentation space with an open top. A sieve plate cover with a vibrator is installed on the top surface of the upper fermentation space. The height of the movable baffle is lower than the front side wall of the sinking garbage pool, so that the sieve plate cover is arranged obliquely. Several groups of hydraulic push rods are arranged in parallel in the lower space. A double-axis motor is arranged at the front end of the hydraulic push rod. A scraper is fixedly connected to the motor shaft. The height of the scraper is limited to the amount that it can enter the lower space when it is in a vertical state. The longitudinal partition wall divides the sinking garbage pool into a middle fermentation space and a rear garbage incineration feeding area. The height of the longitudinal partition wall is half of the sinking garbage pool. The bridge crane is provided with a grab bucket for clamping garbage.

2. The pre-treatment garbage bin for domestic waste incineration power generation according to claim 1 is characterized in that: The sieve plate cover comprises a frame and a sieve plate. The upper parts of the left and right side walls of the upper fermentation space are integrally fixedly connected with an obliquely arranged equipment slot. The shape of the frame matches the top surface of the sunken garbage pool. When the left and right side frames of the frame are placed on the equipment slot, the upper end of the frame is flush with the feeding side of the sunken garbage pool, and the lower end is flush with the upper end of the movable baffle. A number of springs are installed in the equipment slot, and the other end of the spring is fixedly connected to the frame. A vibrator is installed at the front end of the frame, and the vibrator is located in the equipment slot. A support platform is arranged at the lower end of the inner wall of the frame of the frame. The sieve plate is installed on the inner frame of the frame, and its shape matches the shape of the inner frame of the frame. The bottom surface is open, and the top surface is divided into two adjacent parts, one part is a smooth steel plate, and the other part is a sieve plate with rectangular units. The area ratio between the two is 1:2, and the mesh aperture of the sieve plate is 5X20cm.

3. The pre-treatment garbage bin for domestic waste incineration power generation according to claim 2 is characterized in that: A wing plate is integrally arranged on the outer periphery of the top surface of the sieve plate, the wing plate is overlapped on the top surface of the frame, and a hanging ring is arranged on the wing plate.

4. The pre-treatment garbage bin for domestic waste incineration power generation according to claim 1 is characterized in that: The upper end of the main body of the scraper is fixedly connected to the motor shaft, the main body of the scraper is a plate-like structure, the lower end is bent outward, rake teeth are arranged at equal intervals on the lower end, the rake teeth and the scraper main body form an angle of 45 degrees, and a plurality of second rake teeth are arranged at equal intervals on the upper end of the main body of the scraper, and the second rake teeth are arranged in a staggered corresponding manner. The height of the second rake teeth is one third of the height of the main body of the scraper.

5. The pre-treatment garbage bin for domestic waste incineration power generation according to claim 1 is characterized in that: The left and right side walls of the sunken garbage pool are provided with longitudinal grooves, and movable baffles are inserted into the longitudinal grooves. The bottom ends of the movable baffles are provided with a plurality of slots in parallel for the outflow of garbage leachate.

6. The pre-treatment garbage bin for domestic waste incineration power generation according to claim 1 is characterized in that: The top surface of the transverse partition wall is a sloped surface, and the rear end is the lowest end.

7. The pre-treatment garbage bin for domestic waste incineration power generation according to claim 1 is characterized in that: An exhaust pipe is buried in the upper part of the rear side wall of the sunken garbage pool, and the exhaust pipe is connected to the secondary air pipe of the incinerator; a negative pressure pipe is arranged on the wall of the garbage warehouse, and the negative pressure pipe is connected to the primary air pipe of the incinerator. The negative pressure pipe is used to maintain a negative pressure state in the garbage warehouse to prevent odor from overflowing and provide primary air for the incinerator.

8. The pre-treatment garbage bin for domestic waste incineration power generation according to claim 1 is characterized in that: The entrance of the garbage warehouse is provided with an air curtain and an automatic fast-closing rolling shutter door.

9. The pre-treatment garbage bin for domestic waste incineration power generation according to claim 1 is characterized in that: An air inlet pipe is arranged at the bottom of the front side of the sunken garbage pool corresponding to the drainage groove.

10. The method for pre-treating garbage in a pre-treatment garbage bin for power generation by incineration of domestic garbage according to claim 1, characterized in that: The following steps are included: 1) Set up a garbage warehouse, and set up two sinking garbage pools adjacent to each other in the garbage warehouse. The two sinking garbage pools operate synchronously or alternately; 2) Use a garbage truck to dump garbage into any of the sinking garbage pools. When dumping garbage, the garbage falls on the sieve cover of the upper fermentation space and is diverted by the vibration screening of the sieve cover. Part of the garbage falls into the upper fermentation space below, and the rest falls into the middle fermentation area of ​​the sinking garbage pool. Stop dumping garbage until the garbage in the middle fermentation area reaches one-half. The upper fermentation space is used to quickly breed aerobic microorganisms, and the garbage in the upper fermentation space ferments for 20 to 30 hours. 3) When the garbage in the upper fermentation space reaches the fermentation time, open the movable baffle and use the grab bucket to put the fermented garbage into the middle fermentation area. The fermented garbage in the upper fermentation space carries a large number of aerobic microorganisms into the middle fermentation area and mixes with the original garbage in the period to form a new fermentation environment with sufficient air. 4) Continue to dump garbage into the garbage pool until the middle fermentation area is full. The garbage in the middle fermentation area ferments for 40 to 80 hours. The scraper is used to stir it every 20 hours to stir and mix the garbage with a high degree of fermentation at the bottom with the garbage in the middle and upper parts, which accelerates the spread of microorganisms and the dissipation of fermentation heat and moisture. 5) When the garbage in the middle fermentation area reaches the fermentation time, the grab bucket will be used to transfer the garbage to the incineration garbage feeding area.

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