A pretreatment garbage bin for domestic waste incineration power generation and a garbage pretreatment method

Abstract

The present invention provides a pretreatment garbage bin for domestic waste incineration power generation and a garbage pretreatment method, which includes a garbage bin house, two adjacent sunken garbage pools arranged on the ground of the garbage bin house, a bridge crane erected on the sunken garbage pool, a transverse partition wall integrally cast in the front part of the sunken garbage pool, and a longitudinal partition wall integrally cast in the rear part, dividing the sunken garbage pool into three parts: front, middle and rear. A leachate plate is laid on the bottom surface of the sunken garbage pool. The transverse partition wall divides the front part of the sunken garbage pool into an upper fermentation space and a lower space. A sieve plate cover with a vibrator is installed on the top surface of the upper fermentation space. A number of groups of hydraulic push rods are arranged in parallel in the lower space. A double-shaft motor is arranged at the front end of the hydraulic push rod, and a scraper is fixedly connected to the motor shaft. The longitudinal partition wall divides the sunken garbage pool into a middle fermentation space and a rear incineration garbage feeding area. The bridge crane is provided with a grab. This garbage bin can accelerate the dehydration efficiency of domestic waste, thereby increasing the calorific value of domestic waste incineration.

Description

Technical Field

[0001] The invention belongs to the field of domestic waste treatment and comprehensive utilization, and particularly relates to a pretreatment garbage bin for domestic waste incineration power generation and a garbage pretreatment method. Background Art

[0002] With the development and progress of society and the acceleration of urbanization, the problem of domestic waste has become increasingly prominent, causing serious impacts on the environment. Therefore, the resource utilization of garbage has become the focus of attention, and many cities have formulated and implemented garbage classification systems. The resource utilization of garbage can recycle waste, thereby reducing the demand for natural resources, reducing environmental pollution, and promoting economic development.

[0003] Incinerating domestic waste for power generation is a new environmental protection new energy industry and an important way to realize the resource utilization of garbage. The clean energy generated by the garbage incineration power generation technology is used to replace traditional energy, which can effectively reduce the emissions of carbon dioxide and various harmful gases. Moreover, the volume of domestic waste after incineration is reduced by 95%, which can greatly reduce the landfill site and save land resources and protect the environment. In addition to generating electric energy, the heat energy generated during the incineration process of the garbage 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 garbage, the more heat is carried away by the vaporization of water during incineration. Therefore, dehydration measures must be taken before garbage incineration. The commonly used dehydration method is composting dehydration, which is to transport the garbage to the incineration plant and then pour it into the garbage bin for stacking and fermenting dehydration. This method has the lowest cost, but the dehydration effect is limited. In order to improve the dehydration efficiency, various aerobic fermentation methods have emerged. Although the efficiency has been improved, the cost is high. Summary of the Invention

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

[0006] To achieve the above purpose, the technical solution of the invention is that a pretreatment garbage bin for domestic waste incineration power generation includes a garbage bin house, two adjacent sunken garbage pools arranged on the ground of the garbage bin house, and a bridge crane erected on the sunken garbage pool.

[0007] A transverse partition wall is integrally cast at the front part inside the sunken garbage pool, and a longitudinal partition wall is integrally cast at the rear part, dividing the sunken garbage pool into three parts: front, middle and rear. The bottom surface of the sunken garbage pool is laid with a leachate plate, and a number of parallel drainage grooves are arranged below the leachate plate. The bottom surface of the drainage groove is inclined and continuously descends from front to back. A leachate discharge groove is arranged at the rear side of the sunken garbage pool, and a number of drainage grooves are communicated with the leachate discharge groove. The leachate discharge groove is used to collect and discharge the collected leachate from 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%.

[0008] The transverse partition wall divides the front part of the sunken garbage pool into an upper space and a lower space. An activity baffle is vertically arranged at the rear end of the upper space. The activity baffle, the transverse partition wall and the side wall of the sunken garbage form an upper fermentation space with an open top surface. A screen plate cover with a vibrator is installed on the top surface of the upper fermentation space. The height of the activity baffle is lower than the front side wall of the sunken garbage pool, so that the screen plate cover is obliquely arranged. A number of groups of hydraulic push rods are arranged in parallel in the lower space. A double-shaft motor is arranged at the front end of the hydraulic push rod, and a scraper is fixedly connected to the motor shaft. The height of the scraper is limited to be able to enter the lower space in its vertical state.

[0009] The longitudinal partition wall divides the sunken garbage pool into a middle fermentation space and a rear incineration garbage feeding area. The height of the longitudinal partition wall is half of that of the sunken garbage pool.

[0010] The bridge crane is provided with a grab for clamping garbage.

[0011] The screen plate cover includes a frame and a screen plate. Obliquely arranged equipment grooves are integrally and fixedly connected to the upper parts of the left and right side walls of the upper fermentation space. 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 grooves, 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 activity baffle. A number of springs are installed in the equipment grooves, and the other ends of the springs are fixedly connected to the frame. A vibrator is installed at the front end of the frame and is located in the equipment groove. A support platform is arranged at the lower end of the inner side wall of the frame body of the frame. The screen 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 screen plate with a rectangular unit. The area ratio of the two is 1:2. The screen aperture of the screen plate is 5X20cm.

[0012] Wing plates are integrally arranged on the outer periphery of the top surface of the screen plate. The wing plates overlap on the top surface of the frame, and hanging rings are arranged on the wing plates.

[0013] The upper end of the main body of the scraper is fixedly connected to the motor shaft. The main body of the scraper is in a plate-like structure, with the lower end bent outward. Rake teeth are arranged at equal intervals on the lower end, and the rake teeth form a 45-degree angle with the main body of the scraper. A number of second rake teeth are arranged at equal intervals at the upper end of the main body of the scraper, and the second rake teeth are arranged in a staggered correspondence with the rake teeth. The height of the second rake teeth is one-third of the height of the main body of the scraper.

[0014] Vertical grooves are provided on the left and right side walls of the sunken garbage pool, and the movable baffle is inserted into the vertical grooves. A number of slots are arranged side by side at the bottom end of the movable baffle for the outflow of garbage leachate.

[0015] The top surface of the transverse partition wall is a slope surface, and the rear end is the lowest end.

[0016] An exhaust duct is buried in the upper part of the rear side wall of the sunken garbage pool, and the exhaust duct is connected to the secondary air duct of the incinerator; a negative pressure duct is provided on the wall of the garbage storage house, and the negative pressure duct is connected to the primary air duct of the incinerator. The negative pressure duct is used to maintain a negative pressure state in the garbage storage house to prevent the odor from overflowing and to provide primary air for the incinerator.

[0017] An air curtain and an automatic quick-closing rolling shutter door are provided at the entrance of the garbage storage house.

[0018] An air inlet pipe is provided at the bottom of the front side of the sunken garbage pool corresponding to the drainage trough.

[0019] A method for pre-treating garbage in a garbage storage house includes the following steps:

[0020] 1). Set up a garbage storage house, and two sunken garbage pools are arranged adjacent to each other in the garbage storage house. The two sunken garbage pools operate synchronously or alternately.

[0021] 2). Use a garbage truck to dump garbage into any one of the sunken garbage pools. When dumping garbage, the garbage falls on the sieve plate cover of the upper fermentation space and is shunted during the vibration screening of the sieve plate cover. Part of the garbage falls into the lower upper fermentation space, and the rest falls into the middle fermentation area of the sunken garbage pool; stop dumping garbage until the garbage in the middle fermentation area reaches one-half; the upper fermentation space is used for the rapid reproduction of aerobic microorganisms, and the garbage in the upper fermentation space ferments for 20 - 30 hours.

[0022] 3). After the garbage in the upper fermentation space reaches the fermentation time, open the movable baffle and use a grab 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 area to form a new fermentation environment with sufficient air.

[0023] 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 - 80 hours, and during this period, it is stirred once every 20 hours using a scraper to mix the garbage with a high degree of fermentation at the bottom with the garbage in the middle and upper parts, accelerating the spread of microorganisms and the dissipation of fermentation heat and moisture.

[0024] 5), After the garbage in the middle fermentation area reaches the fermentation time, use a grab bucket to transfer the garbage to the incineration garbage feeding area.

[0025] The beneficial effects of the present invention: The garbage storage bin and the garbage pretreatment method of the present invention utilize the screening of domestic garbage to screen out garbage raw materials that are conducive to the rapid fermentation of microorganisms, and construct an environment conducive to the rapid reproduction of microorganisms. Combining the characteristics of microorganism 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, so as to rapidly ferment a large amount of garbage, accelerate the dehydration of domestic garbage, increase the calorific value of the garbage during subsequent garbage incineration, and at the same time recycle the energy generated by garbage fermentation to assist garbage incineration. Brief Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of the present invention.

[0027] Figure 2 It is a schematic structural diagram of the leachate drainage trough and discharge trough of the present invention.

[0028] Figure 3 It is a schematic structural diagram of the scraper of the present invention.

[0029] Figure 4 It is a schematic structural diagram of the sieve plate cover of the present invention. Detailed Embodiments

[0030] As Figures 1 to 4 shown, a pretreatment garbage storage bin for domestic garbage incineration power generation includes a garbage storage bin house, two adjacent sunken garbage pools 1 arranged on the ground of the garbage storage bin house, a bridge crane 2 erected on the sunken garbage pool 1. The garbage storage bin house is a fully enclosed structure, and an air curtain and an automatic quick-closing rolling shutter door are provided at the entrance to prevent the odor of garbage from overflowing and affecting the surrounding environment. A negative pressure pipeline is provided on the wall of the garbage storage bin house. The negative pressure pipeline is used to maintain a slightly negative pressure state in the garbage storage bin house to prevent the odor from overflowing. The negative pressure pipeline can be connected to the primary air pipeline of the incinerator to provide primary air for the incinerator, or it can be connected to the deodorization device and discharged to the atmosphere. A reasonable selection is made according to the actual situation during use. Through the above design, the working environment of the garbage incineration power plant can be effectively guaranteed.

[0031] In this embodiment, the length of the sunken garbage pool 1 is 37 meters, the width is 12 meters, the elevation of the bottom of the garbage pool is -5 meters, the effective inventory of the two garbage pools is 12,000 cubic meters, and it can store about 5,000 tons of garbage, ensuring the garbage usage of all incinerators for more than 5 to 7 days. A transverse partition wall 11 is integrally cast in the front part of the sunken garbage pool 1, and a longitudinal partition wall 12 is integrally cast in the rear part, dividing the sunken garbage pool into three working areas: front, middle and rear. The bottom surface of the sunken garbage pool is paved with a leachate plate 13. A number of parallel drainage grooves 131 are arranged below the leachate plate 13. The bottom surface of the drainage groove 131 is inclined and continuously descends from front to back. A leachate discharge groove 132 is arranged at the rear side of the sunken garbage pool 1. A number of drainage grooves 131 are communicated with the leachate discharge groove 132. The leachate discharge groove is used to collect and discharge the collected leachate from the garbage bin. The front side of the sunken garbage pool 1 is the feeding side, and 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 air extraction pipeline is buried in the upper part of the rear side wall of the sunken garbage pool. The air extraction pipeline is connected to the secondary air pipeline of the incinerator and is used 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 utilized, and on the other hand, the amount of combustible gas generated in the garbage pool can be controlled to ensure production safety.

[0032] An air inlet pipe is arranged at the bottom of the front side of the sunken garbage pool corresponding to the drainage groove, which is used to inject air into the garbage pool to adjust the air in the garbage and ensure the fermentation effect.

[0033] The horizontal partition wall 11 divides the front part of the sunken garbage pool 1 into an upper space and a lower space. At the rear end of the upper space, a movable baffle 14 is vertically arranged. The movable baffle 14, the horizontal partition wall 11 and the side walls of the sunken garbage form an upper fermentation space with an open top. Vertical grooves are arranged on the left and right side walls of the sunken garbage pool, and the movable baffle is inserted into the vertical grooves. A plurality of slots 141 are arranged in parallel at the bottom end of the movable baffle for the garbage leachate to flow out of the upper fermentation space. The top surface of the horizontal partition wall is a slope surface, and the rear end is the lowest end, which is sloped to facilitate the flow of the garbage leachate towards 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 sunken garbage pool 1, so that the sieve plate cover is obliquely arranged, and 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. On the upper parts of the left and right side walls of the upper fermentation space, an obliquely arranged equipment groove 16 is integrally fixed. The shape of the frame 31 matches the top surface of the sunken garbage pool. When the left and right side frames of the frame 31 are placed on the equipment groove 16, the upper end of the frame 31 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 to ensure the smooth passage of the garbage. A plurality of springs 33 are installed in the equipment groove 16, and the other ends of the springs 33 are fixedly connected to the frame 31. A vibrator 34 is installed at the front end of the frame. The vibrator 34 is located in the equipment groove. A support platform is arranged at the lower end of the inner side wall of the frame body of the frame 31, and the sieve plate 32 is installed on the inner frame of the frame, with a shape matching that of the inner frame of the frame, an open bottom surface, and the top surface 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 of the two is 1:2. The different areas ensure that the most garbage is stacked in the middle. The advantage of having more garbage in the middle is that when the garbage in the middle is too high, it can naturally slide to both sides. The mesh aperture of the sieve plate 32 is 5X20cm. An integral wing plate 35 is arranged on the outer periphery of the top surface of the sieve plate 32. The wing plate 35 overlaps on the top surface of the frame, and hanging rings are arranged on the wing plate 35, which is convenient for the grab to hang the sieve plate to reverse the sieve plate.

[0034] A plurality of 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 be able to enter the lower space in its 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 bends outward. Rake teeth 163 are arranged at equal intervals at the lower end. The rake teeth 163 form a 45-degree angle with the main body of the scraper. A plurality of second rake teeth 164 are arranged at equal intervals at the upper end of the main body of the scraper. The second rake teeth 164 are arranged in an alternating and 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 the garbage in the middle fermentation space.

[0035] The longitudinal partition wall 12 divides the sunken garbage pit into a central fermentation space and a rear incineration garbage feeding area. The height of the longitudinal partition wall 12 is half of that of the sunken garbage pit. The central fermentation space is used for garbage fermentation, and the rear incineration garbage feeding area is used to store the garbage after fermentation and dehydration, preparing for incineration in the furnace.

[0036] The bridge crane 2 is provided with a grab 21 for clamping the garbage and assisting in completing each link of garbage fermentation and dehydration.

[0037] The garbage pretreatment method of the garbage storage bin of the present invention sets up a garbage storage room, and two sunken garbage pools are arranged adjacent to each other in the garbage storage room, 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 to the spring in the equipment slot on the side wall of the garbage pool, and a vibrator is installed on the frame. 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 several rectangular sieve hole units, and the other part is a smooth steel plate. In this way, the screened garbage can start to stack on one side in the upper fermentation space. The advantages of such a setting are as follows: First, after dense stacking, dehydration of the garbage is physically carried out through the action of gravity. Second, the distribution of the garbage in the upper fermentation space can be ensured to be uniform. Specifically, when one side is about to be filled up, the sieve plate direction is reversed, and through the covering of the smooth steel plate, the newly screened garbage is filled into the other side, thereby reducing the number of times of using the grab to sort the garbage and improving work efficiency. The garbage screened in the upper fermentation space is mainly garbage with a relatively small volume and often has a relatively high moisture content. After stacking, the gaps between the garbage are small, so it is easy to heat up and the microbial content is high, and the microorganisms can multiply rapidly. The purpose of setting the upper fermentation space is to use the screening of the garbage and the establishment of the environment to rapidly multiply a large number of microorganisms. The garbage in the upper fermentation space ferments for 20 to 30 hours. The reason is that when the environment is suitable, a large number of microorganisms do not need to consume a large amount of oxygen during the initial stage of rapid multiplication. Therefore, the 20 to 30-hour fermentation process is to ensure the rapid multiplication of microorganisms and avoid the limitation of oxygen consumption, so as to achieve the maximum efficiency; the garbage that does not fall into the upper fermentation space enters the middle fermentation area. Since it is all relatively large garbage, there are relatively many gaps when stacked naturally, and the distribution and stacking of the garbage can also be assisted and adjusted by the grab. 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 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 incoming garbage 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 incoming garbage 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 increase the calorific value of garbage incineration, if the garbage in the upper fermentation space does not fill the middle fermentation area, garbage can be added until it is full and then stopped. The garbage in the middle fermentation area is fermented for 40 to 80 hours, and is stirred once every 20 hours. The scraper is set in the lower space for two purposes. One is that the garbage falling into the middle fermentation area may slide into the lower space with the garbage stack, and it is necessary to use the scraper to push it out to facilitate the subsequent transfer by 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 dissipate the water and heat generated by the fermentation of the bottom garbage. At the same time, the microorganisms in the area with a higher degree of fermentation at the bottom of the garbage are transferred upward, accelerating 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.

[0038] 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 increased. Compared with the traditional simple stacking natural fermentation dehydration efficiency is higher.

Claims

1. A pre-treatment waste bin for domestic waste incineration power generation, characterized in that, It includes a garbage storage room, two sunken garbage pools adjacent to each other on the ground of the garbage storage room, and a bridge crane erected on the sunken garbage pool. A transverse partition wall is integrally cast in the front part of the sunken garbage pool, and a longitudinal partition wall is integrally cast in the rear part, dividing the sunken garbage pool into three parts: front, middle and rear. A leachate plate is laid on the bottom surface of the sunken garbage pool, and several parallel drainage grooves are arranged below the leachate plate. The bottom surface of the drainage groove is inclined and continuously descends from front to back. A leachate discharge groove is arranged at the rear side of the sunken garbage pool, and several drainage grooves are communicated with the leachate discharge groove. The leachate discharge groove is used to collect and discharge the collected leachate from the garbage storage. 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 sunken garbage pool into an upper space and a lower space. An activity baffle is vertically arranged at the rear end of the upper space. The activity baffle, the transverse partition wall and the side wall of the sunken garbage form an upper fermentation space with an open top surface. A sieve plate cover with a vibrator is installed on the top surface of the upper fermentation space. The height of the activity baffle is lower than the front side wall of the sunken garbage pool, so that the sieve plate cover is obliquely arranged. Several groups of hydraulic push rods are arranged in parallel in the lower space. A double-shaft motor is arranged at the front end of the hydraulic push rod, and a scraper is fixedly connected to the motor shaft. The height of the scraper is limited to enter the lower space in its vertical state. The sieve plate cover includes a frame and a sieve plate. Obliquely arranged equipment grooves are integrally fixed to the upper parts of the left and right side walls of the upper fermentation space. 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 grooves, 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 activity baffle. Several springs are installed in the equipment grooves, and the other ends of the springs are fixedly connected to the frame. A vibrator is installed at the front end of the frame, and the vibrator is located in the equipment groove. A support platform is arranged at the lower end of the inner side wall of the frame body 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 a rectangular unit. The area ratio of the two is 1:

2. The mesh aperture of the sieve plate of the sieve plate is 5X20cm. 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-shaped structure, and the lower end bends outward. Rake teeth are arranged at equal intervals at the lower end, and the rake teeth form a 45-degree angle with the main body of the scraper. Several second rake teeth are arranged at equal intervals at the upper end of the main body of the scraper, and the second rake teeth are arranged in an alternating and corresponding manner with the rake teeth. The height of the second rake teeth is one-third of the height of the main body of the scraper. The longitudinal partition wall divides the sunken garbage pool into a middle fermentation space and a rear incineration garbage feeding area. The height of the longitudinal partition wall is half of the sunken garbage pool. The bridge crane is provided with a grab for clamping garbage.

2. The pre-treatment waste bin for domestic waste incineration power generation according to claim 1, wherein Wing plates are integrally arranged on the outer periphery of the top surface of the sieve plate, the wing plates overlap on the top surface of the frame, and hanging rings are arranged on the wing plates.

3. The pretreatment waste bin for domestic waste incineration power generation according to claim 1, wherein, Vertical grooves are arranged on the left and right side walls of the sunken garbage pool, and the activity baffle is inserted into the vertical grooves. Several slots are arranged in parallel at the bottom end of the activity baffle for the outflow of garbage leachate.

4. The pretreatment waste bin for domestic waste incineration power generation according to claim 1, wherein, The top surface of the transverse partition wall is a slope surface, and the rear end is the lowest end.

5. The pretreatment waste bin for domestic waste incineration power generation according to claim 1, wherein 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 storage room, and the negative pressure pipe is connected to the primary air pipe of the incinerator. The negative pressure pipe is used to maintain the negative pressure state of the garbage storage room to prevent the odor from overflowing and provide primary air for the incinerator.

6. The pretreatment waste bin for domestic waste incineration power generation according to claim 1, characterized in that, An air curtain and an automatic quick-closing rolling shutter door are arranged at the entrance of the garbage storage room.

7. The pretreatment waste bin for domestic waste incineration power generation according to claim 1, wherein An air inlet pipe is arranged at the bottom of the front side of the sunken garbage pool corresponding to the drainage trough.

8. The garbage pretreatment method of the pretreatment garbage bin for domestic waste incineration power generation according to claim 1, characterized in that, It includes the following steps: 1). Set up a garbage storage room, and adjacent to each other in the garbage storage room, set up two sunken garbage pools, and the two sunken garbage pools operate synchronously or alternately; 2). Use a garbage truck to dump garbage into any one of the sunken garbage pools. When dumping garbage, the garbage falls on the sieve plate cover of the upper fermentation space, and is shunted during the vibration screening of the sieve plate cover. Part of the garbage falls into the lower upper fermentation space, and the rest falls into the middle fermentation area of the sunken garbage pool; stop dumping garbage until the garbage in the middle fermentation area reaches one-half; the upper fermentation space is used to rapidly breed aerobic microorganisms, and the garbage in the upper fermentation space ferments for 20 to 30 hours; 3). After the garbage in the upper fermentation space reaches the fermentation time, open the movable baffle and use a grab to put the fermented garbage into the middle fermentation area. The fermented garbage in the upper fermentation space carries a large amount of aerobic microorganisms into the middle fermentation area and mixes with the original garbage in the area 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, and is stirred once every 20 hours by a scraper to stir and mix the garbage with a high degree of fermentation at the bottom and the garbage in the middle and upper parts, accelerating the spread of microorganisms and the dissipation of fermentation heat and moisture. 5). After the garbage in the middle fermentation area reaches the fermentation time, use a grab to transfer the garbage therein to the incineration garbage feeding area.

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