Garbage drying and incineration apparatus

Abstract

A garbage drying and incineration apparatus, comprising an incinerator and a drying chamber (3). The drying chamber (3) comprises a feeding port (31) at a top portion, a discharge port (32) at a bottom portion, and gas inlets (33) and a gas outlet (34) on side surfaces, the gas inlets (33) being in communication with a flue gas duct (2). A material frame (4) arranged below the feeding port (31) comprises a center shaft (5) and a pair of vertical columns (6). Multiple layers of push-and-scrape assemblies are connected between the pair of vertical columns (6), each push-and-scrape assembly comprising a shaft sleeve (7), a push plate (10) and a scraper (9), and the center shaft (5) being able to rotate in the shaft sleeves (7). A horizontal tray (8) is disposed on the center shaft (5), and the horizontal tray (8) comprises a semicircular disc bottom and a semicircular annular enclosure. A lower side edge of a scraper (9) is flush with the top of the enclosure. A lower end of a push plate (10) extends vertically to contact the bottom of the horizontal tray (8), and extends horizontally to contact an inner wall of the enclosure. Thus, said apparatus overcomes the problems in the existing technology of energy consumption during drying being high, and the degree of garbage drying being insufficient, when garbage is dried and incinerated. In addition, garbage is dried using flue gas of the incinerator, and the garbage falls and is air-dried layer by layer, which can effectively reduce the water content of the garbage, and improve the garbage incineration effect.

Description

Garbage drying and incineration equipment Technical Field

[0001] The present invention relates to the technical field of garbage incineration, in particular to a garbage drying and incineration device. Background Art

[0002] Waste incineration is an important means of reducing and harmlessly treating waste, and is currently a realistic choice for waste disposal in my country. In particular, waste incineration power generation projects can effectively utilize waste to generate considerable economic benefits.

[0003] The calorific value of garbage is the main factor affecting the combustion effect of garbage. Currently, the garbage incinerated in my country's waste incineration power plants is mainly municipal solid waste with a relatively high water content. The calorific value of untreated garbage is often lower than the demand for incineration power generation. Garbage drying technology is an effective method to reduce the moisture content and further increase the calorific value. However, the drying effect of the currently used garbage drying and incineration technology when treating garbage is still difficult to meet the incineration standard. Chinese Patent Publication No. CN110513996A, published on November 29, 2019, entitled "A Garbage Drying Device for Waste Incineration Power Plants" discloses a garbage drying device, including a box with a feed hole and a discharge hole, and a stirring device and a cutting device disposed in the box. The garbage is heated and dried by an electric heating plate, which can serve as a drying pretreatment before garbage incineration. However, the garbage drying device provided by this patent requires an additional heat source, which consumes a lot of energy. The water vapor emitted by the garbage easily accumulates in the box, affecting the degree of drying of the garbage.

[0004] Summary of the Invention

[0005] The present invention overcomes the problems of high drying energy consumption and insufficient drying degree of garbage during drying and incineration in the prior art, and provides a garbage drying and incineration device that utilizes the flue gas of the incinerator to dry the garbage. By setting up multiple layers of horizontal trays and cooperating with push and scraper components, the garbage can be dropped layer by layer, spread flat and dried by air, and the garbage can be dried so that its calorific value meets the normal incineration power generation requirements, while reducing the energy consumption of garbage drying.

[0006] In order to achieve the above object, the present invention adopts the following scheme:

[0007] Garbage drying and incineration device, including:

[0008] An incinerator, comprising a furnace mouth, a furnace cavity, a slag mouth and a flue gas duct;

[0009] The griller has a bottom surface and a bottom surface, and the griller has a bottom surface and a bottom surface, and the griller has a bottom surface and a bottom surface. The griller has a bottom surface and a bottom surface, and the griller has a bottom surface and a bottom surface. The griller has a bottom surface and a bottom surface, and the griller has a bottom surface and a bottom surface.

[0010] Preferably, the device also includes a dry garbage temporary storage area, which includes an upper inlet and a lower outlet, the inlet is connected to below the discharge port at the bottom of the drying chamber, and the outlet is connected to above the furnace mouth of the incinerator.

[0011] Preferably, the number of the air inlets is consistent with the number of the horizontal trays and the directions of the air inlets correspond one-to-one with the positions of the horizontal trays.

[0012] Preferably, the bottom surface of the drying chamber is provided with a slope inclined toward the discharge port.

[0013] Preferably, the power assembly includes a motor, and the output end of the motor drives the central shaft to rotate around the axis through a gear set.

[0014] Preferably, a garbage crusher is further included, and the garbage outlet of the garbage crusher is connected above the feed inlet of the drying chamber.

[0015] Preferably, the gas outlet is connected to a vacuum device for sucking the gas in the drying chamber.

[0016] The present application also provides a method for drying and incinerating garbage, using the garbage drying and incineration device provided by any of the above solutions, the method comprising the following steps:

[0017] S1: Use the power assembly to drive the central shaft to rotate so that the uppermost horizontal tray is located below the feed port, and the starting end of the horizontal tray in the rotation direction is located below the scraper and the ending end is located below the push plate;

[0018] S2: Open the feed port to allow the garbage to fall into the uppermost horizontal tray. Drive the central shaft to rotate half a circle. Each horizontal tray passes under the scraper. The height of the garbage in the horizontal tray is leveled by the scraper to the height of the enclosure.

[0019] S3: The blower at the air inlet blows the external air and the high-temperature flue gas in the flue gas duct to the horizontal tray to dry the garbage in it;

[0020] S4: After completing one garbage drying, the driving center shaft rotates half a circle, and each horizontal tray passes under the push plate. The garbage in the upper horizontal tray is pushed into the lower horizontal tray by the push plate, and the garbage in the lower horizontal tray falls to the bottom of the drying chamber and enters the furnace mouth of the incinerator from the discharge port, and returns to step S2 to continue execution.

[0021] The present invention has at least the following beneficial effects: (1) the garbage falls layer by layer on the material rack, and after being blown and dried multiple times, the garbage has a high degree of drying and a high calorific value; (2) the garbage is turned over multiple times during the multiple falling processes, which can achieve uniform drying of each part of the garbage and improve the overall drying degree; (3) the high-temperature flue gas of the incinerator is fully utilized as a heat source, which can increase the garbage drying speed and save energy; (4) the air flow between the air inlet and the air outlet can promptly take away the water vapor evaporated from the garbage, keep the dryness and humidity in the drying room stable to meet the garbage drying conditions, and is conducive to the continuous operation of the device; (5) a temporary storage area for dry garbage can be set at the discharge port, and the temporarily stored dry garbage can be used for the rapid start-up of the garbage incinerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a schematic diagram of an overall structure of the present invention;

[0023] FIG2 is a schematic diagram of the material rack structure of the present invention;

[0024] FIG3 is a top view of the material rack structure of the present invention;

[0025] FIG4 is a schematic diagram of the central axis connection structure of the present invention;

[0026] FIG5 is a schematic diagram of the column connection structure of the present invention.

[0027] In the figure: furnace mouth 1, flue gas duct 2, drying chamber 3, feed port 31, discharge port 32, air inlet 33, air outlet 34, material rack 4, central axis 5, column 6, shaft sleeve 7, horizontal tray 8, scraper 9, push plate 10, ramp 11. DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0029] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0030] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the materials described are commercially available unless otherwise specified; in the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or connected or set as a whole. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The orientations or positional relationships indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0031] As shown in Figures 1-5, the garbage drying and incineration device provided by the present invention includes:

[0032] An incinerator, which includes a furnace mouth 1, a furnace cavity, a slag mouth and a flue gas duct 2; the incinerator is a conventional product that can be obtained through market channels. The types of incinerators mainly include mechanical grate furnaces, fluidized bed incinerators, pyrolysis incinerators and rotary kiln incinerators. These types of incinerators can all be used in the solution of this application. Considering the incineration performance and economy, it is preferred to use a mechanical grate furnace with mature and reliable technology.

[0033] The drying chamber 3 includes a feed port 31 at the top, a discharge port 32 at the bottom, an air inlet 33 and an air outlet 34 on the side. The air inlet 33 is connected to the flue gas duct 2 and is equipped with a blower. The discharge port 32 is connected to the furnace port 1. A material rack 4 is provided below the feed port 31. The material rack 4 includes a central axis 5 and a pair of columns 6. A multi-layer push-scrape assembly is connected between the pair of columns 6. Each layer of the push-scrape assembly includes a shaft sleeve 7 and a push plate 10 and a scraper 9 connected to its two sides. The push plates 10 and scrapers 9 of the upper and lower push-scrape assemblies are connected to the upper and lower push-scrape assemblies. The plates 9 are arranged in a staggered manner, and the central shaft 5 is driven by the power component to rotate in the shaft sleeve 7. A horizontal tray 8 fixed on the central shaft 5 is arranged under each layer of the pushing and scraping assembly. The horizontal tray 8 includes a semicircular bottom with the axis of the central shaft 5 as the center of the circle and a semicircular ring enclosure arranged on its arc-shaped edge. The two adjacent layers of horizontal trays 8 are located on both sides of the central shaft 5. The lower edge of the scraper 9 is flush with the top of the enclosure, and the lower end of the push plate 10 extends vertically to the bottom of the horizontal tray 8 and horizontally to the inner wall of the enclosure.

[0034] The funnel-shaped feed port 31 allows waste to be dried, supplied by an external feeder, to enter the drying chamber 3 through the port. The waste then falls onto the topmost horizontal tray 8 of the material rack 4. The lower end of the feed port 31 is positioned closer to the topmost scraper 9 than the topmost push plate, allowing the scraper 9 to properly level the waste. The opening interval and single-time feed volume of the feed port 31 can be adjusted by a valve. The discharge port 32 is connected to the furnace opening 1 via a conveying pipe. After multiple layers of drying, the waste falls to the bottom of the drying chamber 3, where it accumulates and falls into the discharge port 32. Most of the high-temperature flue gas in the flue gas duct 2 is used for steam turbine power generation, while a small amount enters the drying chamber 3 through the air inlet 33, forming hot air. The air inlet 33 also optionally includes an air inlet for external air. A blower mixes the flue gas and air and blows them onto the horizontal tray 8, drying the waste. Evaporated water vapor from the waste is promptly discharged from the drying chamber 3 through the air outlet 34, maintaining a constant humidity within the drying chamber 3 without causing water vapor accumulation.

[0035] The lower ends of a pair of columns 6 of the material rack 4 are fixed to the bottom of the drying chamber 3, and the central axis 5 is located in the middle position of the pair of columns 6. In order to facilitate the connection of the push and scraper assembly, the columns 6 are preferably a square column structure. The shaft sleeves 7 in the push and scraper assembly are divided into multiple sections of equal length and are all sleeved on the central axis 5. The opposite sides of the outer surface of the shaft sleeve 7 are respectively connected to the push plate 10 and the scraper 9. The plate length directions of the push plate 10 and the scraper 9 are consistent. The horizontal trays 8 on the central axis 5 are arranged at intervals, and the lower side surface of the bottom of the upper horizontal tray 8 and the upper side surface of the bottom of the lower horizontal tray 8 are separated by a shaft sleeve 7. During actual installation and manufacturing, the central axis 5 can be placed in the shaft sleeve 7 first and then the horizontal tray 8 can be fixed to the central axis 5 layer by layer by welding. The vertical projection of each horizontal tray 8 is a semicircle, and the adjacent upper and lower horizontal trays 8 are staggered to form a full circle. When the garbage on the upper horizontal tray 8 is pushed, it falls into the horizontal tray 8 of the lower layer, and the garbage falls layer by layer until it reaches the bottom of the drying chamber 3. The scraper 9 is a long, rectangular plate, connected at both ends to the sleeve 7 and the column 6, respectively. The lower edge of the scraper 9 is flush with the top of the enclosure of the horizontal tray 8. When rotating relative to the horizontal tray 8, the scraper 9 scrapes away any debris in the horizontal tray 8 that is above the enclosure, thereby improving the drying effect. The pusher 10 includes an upper portion connected to the column 6 and the sleeve 7, respectively, and a lower portion that engages the bottom of the horizontal tray 8 and the enclosure. When rotating relative to the horizontal tray 8, the pusher pushes all the debris in the horizontal tray 8 to the next horizontal tray 8. It should be noted that in actual designs, the rotation method involved in the material rack 4 is not limited to the method of driving the central shaft 5 to rotate. It can also be a method of driving the column 6 to move in a circular motion around the central shaft 5. If the method of moving the column 6 is used, the column 6 is separated from the bottom of the drying chamber 3 and connected to the power assembly, and the central shaft 5 is fixed to the bottom of the drying chamber 3. It is only necessary to ensure that the horizontal tray 8 and the pusher assembly can achieve relative rotation with a controllable rotation angle. This variation is obvious. Since the horizontal trays 8 are staggered and the push plates 10 and scrapers 9 are also staggered, the relative angles of each layer of horizontal tray 8 and the corresponding push plates 10 and scrapers 9 above it are consistent, thereby achieving the simultaneous scraping of garbage in each layer of horizontal trays 8 or simultaneous pushing of garbage in each layer of horizontal trays 8 to the next layer.

[0036] When using the device to dry and incinerate garbage, first add garbage directly to the incinerator's mouth 1 to complete the incinerator startup. You can also use the drying chamber 3 to use external air to preliminarily dry the garbage before adding it to the incinerator to accelerate the startup of the incinerator. After starting the incinerator, use the high-temperature flue gas in the flue gas duct 2 to dry the garbage. During normal operation of the device, first adjust the initial position of the horizontal tray 8, and use the power component to drive the central shaft 5 to rotate so that the top horizontal tray 8 is located below the feed port 31. At this time, the starting end of the horizontal tray 8 in the rotation direction is located below the scraper 9, and the ending end is located below the push plate 10. The initial position of the horizontal tray 8 does not need to be adjusted every time, because the device actually works in a cycle of one full circle of the horizontal tray 8, so the horizontal tray 8 will eventually return to its starting position, and no adjustment is required when the device is started next time; after the horizontal tray 8 is in place, the feed port 31 is opened to allow a certain amount of garbage to fall into In the top horizontal tray 8, the garbage on the horizontal tray 8 before rotation is mainly concentrated near the starting end of the rotation direction. The power component drives the central shaft 5 to rotate half a circle, and each horizontal tray 8 passes completely under its corresponding scraper 9. The height of the garbage in the horizontal tray 8 is leveled to the height of the enclosure by the scraper 9; the blower of the air inlet 33 blows the external air and the high-temperature flue gas in the flue gas duct 2 to the horizontal tray 8 to dry the garbage therein, and the water vapor in the garbage drying process is taken away from the drying chamber 3 from the air outlet 34; the garbage drying is completed after blowing for a period of time from the air inlet 33. At this time, the power component drives the central shaft 5 After a half-turn, each horizontal tray 8 passes completely beneath its corresponding push plate 10. The trash in the previous horizontal tray 8 is pushed by the push plate 10 into the next horizontal tray 8. The trash in the bottom horizontal tray 8 falls to the bottom of the drying chamber 3 and enters the incinerator's furnace port 1 through the discharge port 32. The trash that falls to the bottom of the drying chamber 3 is dried as many times as the number of horizontal trays 8. As the trash falls layer by layer, it is constantly turned over to ensure that the trash entering the furnace port 1 and the final moisture content and drying uniformity meet incineration standards. After completing one cycle, the valve at the discharge port 32 is opened to add trash to the top horizontal tray 8, and the rotation of the horizontal trays and the drying of the trash continue.

[0037] By using this garbage drying and incineration device, the garbage falls layer by layer on the material rack 4 and is air-dried layer by layer. After multiple air-drying, the garbage has a high degree of drying, high calorific value, and good incineration effect; the garbage can be turned over multiple times during the multiple falling processes, and each part of the garbage is evenly dried. Since the continuous drying of a part of the garbage with a very low water content is not concentrated, the overall drying degree of the garbage is improved; the device makes full use of the flue gas of the incinerator as a heat source. The flue gas is a high-temperature gas. After mixing with the air, the temperature is still high and the water vapor contained is less, which can increase the garbage drying speed and save energy; the airflow between the air inlet 33 and the air outlet 34 can promptly take away the water vapor evaporated from the garbage, keep the dryness and humidity in the drying chamber 3 stable to meet the garbage drying conditions, and the device is not prone to malfunction during continuous operation.

[0038] In another technical solution, as shown in FIG1 , the device further includes a temporary storage area for dry garbage, which includes an upper inlet and a lower outlet. The inlet is connected to below the discharge port 32 at the bottom of the drying chamber 3, and the outlet is connected to above the furnace port 1 of the incinerator. The connection between the dry garbage buffer, the drying chamber 3, and the incinerator is controlled by a valve. Under normal circumstances, the discharge port 32 of the drying chamber 3 is directly connected to the furnace port 1 of the incinerator. The rate at which the drying chamber 3 dries garbage is kept close to the rate at which the incinerator consumes garbage. By improving the garbage drying efficiency, a large amount of dry garbage is generated, a portion of which is sent to the incinerator, and the rest is sent to the temporary storage area for dry garbage. The garbage temporarily stored in the temporary storage area for dry garbage can be directly added to the incinerator for incineration, and a portion will also be retained as the initial garbage when the incinerator is started next time. When the incinerator is started, there is a period of continuous combustion and temperature rise to a stable state. The time taken for this process is greatly affected by the degree of dryness of the garbage. Since the dryness of this part of the garbage is high, the startup speed of the incinerator can be significantly accelerated.

[0039] In another technical solution, as shown in Figure 1, the number of air inlets 33 matches the number of horizontal trays 8, and the orientation of the air inlets 33 corresponds one-to-one with the position of the horizontal trays 8. By providing a corresponding air inlet 33 for each layer of horizontal trays 8, precise air drying can be achieved. Since the moisture content of the garbage decreases layer by layer, the air volume at different levels can be adjusted by controlling the power of the blower, achieving a better drying effect.

[0040] The bottom surface of the drying chamber 3 is provided with a slope 11 that slopes toward the discharge port 32. Under normal circumstances, garbage that falls to the bottom of the drying chamber 3 will naturally fall into the discharge port 32 after accumulation. Alternatively, the discharge port 32 can be positioned below the material rack 4 so that the dried garbage enters the discharge port 32 directly. By providing a slope 11 that slopes toward the discharge port 32, the dried garbage can be guided to the discharge port 32 to reduce the amount of accumulation.

[0041] The power assembly includes a motor, the output of which drives the central shaft 5 to rotate about its axis via a gear train. The motor can be a common stepper motor or servo motor, facilitating control of the rotation rate and number of revolutions of the central shaft 5 and the horizontal tray 8. The gear train includes gears connected to the motor output shaft and the upper end of the central shaft 5, respectively. The gear connected to the motor output shaft has a smaller diameter than the gear at the upper end of the central shaft 5, and the two can mesh directly or indirectly using a multi-stage gear meshing structure. Multiple motor revolutions drive a half-revolution of the central shaft 5, minimizing the impact of motor speed control accuracy on the rotation accuracy of the central shaft 5.

[0042] In another technical solution, as shown in FIG1 , the device further comprises a garbage crusher, the garbage outlet of which is connected above the feed port 31 of the drying chamber 3. The garbage crusher crushes the garbage before it is fed into the drying chamber 3 to make it more uniform in size and achieve better drying effect.

[0043] The air outlet 34 is connected to a vacuum device for extracting the gas in the drying chamber 3. The addition of a vacuum device to the air outlet 34 can actively increase the convection wind speed in the drying chamber 3 and improve the garbage drying rate. The vacuum device can also be connected to a gas filtration and purification structure to remove odor and dust from the gas discharged from the drying chamber 3.

[0044] The present application also provides a method for drying and incinerating garbage, using the garbage drying and incineration device provided by any of the above solutions, the method comprising the following steps:

[0045] S1: Use the power assembly to drive the central shaft 5 to rotate so that the uppermost horizontal tray 8 is located below the feed port 31, with the starting end of the horizontal tray 8 in the rotation direction located below the scraper 9 and the ending end located below the push plate 10;

[0046] S2: Open the feed port 31 to allow the garbage to fall into the uppermost horizontal tray 8, drive the central shaft 5 to rotate half a circle, and each horizontal tray 8 passes under the scraper 9. The height of the garbage in the horizontal tray 8 is leveled by the scraper 9 to the height of the enclosure;

[0047] S3: The blower at the air inlet 33 blows the external air and the high-temperature flue gas in the flue gas duct 2 toward the horizontal tray 8 to dry the garbage therein;

[0048] S4: After completing one layer of garbage drying, the driving center shaft 5 rotates half a circle, and each layer of horizontal tray 8 passes under the push plate 10. The garbage in the upper layer of horizontal tray 8 is pushed into the lower layer of horizontal tray 8 by the push plate 10. The garbage in the lowermost horizontal tray 8 falls to the bottom of the drying chamber 3 and enters the furnace port 1 of the incinerator from the discharge port 32, and returns to step S2 to continue execution.

[0049] By using the garbage drying and incineration device provided by the present application to dry and incinerate garbage, the garbage put into the drying chamber 3 falls layer by layer on the material rack 4, and the garbage is turned over many times during the drying process, which can achieve uniform drying of each part of the garbage and improve the overall drying degree. The garbage has a high calorific value and a good combustion effect, which can improve the power generation efficiency of the garbage incineration power plant; the high-temperature flue gas of the incinerator is fully utilized as a heat source for garbage drying, which increases the garbage drying speed while reducing additional energy consumption; the water vapor evaporated during the garbage drying process is taken away in time, the device can operate stably for a long time, speeds up the garbage processing speed, and increases the amount of garbage that can be incinerated each time a single device in the power plant is operated.

[0050] The number of devices and processing scales described herein are intended to simplify the description of the present invention. Applications, modifications, and variations of the present invention will be readily apparent to those skilled in the art.

[0051] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. Waste drying and incineration device, characterized in that, Comprising: An incinerator, which includes a furnace opening, a furnace chamber, a slag outlet and a flue gas pipeline; A drying chamber, which includes a feed inlet at the top, a discharge outlet at the bottom, an air inlet and an air outlet on the side. The air inlet is connected to the flue gas pipeline and is equipped with a blower. The discharge outlet is connected to the furnace opening. A material rack is arranged below the feed inlet. The material rack includes a central shaft and a pair of columns. A plurality of layers of pushing and scraping components are connected between the pair of columns. Each layer of pushing and scraping component includes a bushing and a pushing plate and a scraping plate respectively connected to both sides thereof. The pushing plates and scraping plates of the upper and lower layers of pushing and scraping components are staggered. The central shaft is driven by a power component to rotate in the bushing. A horizontal tray fixed on the central shaft is arranged below each layer of pushing and scraping component. The horizontal tray includes a semi-circular tray bottom with the central axis of the central shaft as the center of the circle and a semi-circular ring-shaped enclosure arranged on its arc-shaped edge. Adjacent two layers of horizontal trays are located on both sides of the central shaft respectively. The lower edge of the scraping plate is flush with the top of the enclosure. The lower end of the pushing plate extends vertically to fit the tray bottom of the horizontal tray and extends horizontally to fit the inner wall of the enclosure.

2. The waste drying and incineration device according to claim 1, characterized in that, It further includes a drying garbage storage area, which includes an entrance on the upper side and an exit on the lower side. The entrance is connected below the discharge outlet at the bottom of the drying chamber, and the exit is connected above the furnace opening of the incinerator.

3. The waste drying and incineration device according to claim 1, characterized in that, The number of the air inlets is the same as the number of the horizontal trays, and the orientations of the air inlets correspond to the positions of the horizontal trays one by one.

4. The waste drying and incineration device according to claim 1, characterized in that, The bottom surface of the drying chamber is provided with a slope inclined towards the discharge outlet.

5. The waste drying and incineration device according to claim 1, characterized in that, The power component includes a motor, and the output end of the motor drives the central shaft to rotate around the axis through a gear set.

6. The waste drying and incineration device according to claim 1, characterized in that, It further includes a garbage crusher, and the garbage outlet of the garbage crusher is connected above the feed inlet of the drying chamber.

7. The waste drying and incineration device according to claim 1, characterized in that, The air outlet is connected with a vacuum pumping device for sucking the gas in the drying chamber.

8. Waste drying and incineration method, characterized in that, Using the garbage drying and incineration device according to any one of claims 1-7, the method includes the following steps: S1: Drive the central shaft to rotate with the power component so that the uppermost horizontal tray is located below the feed inlet. The starting end of the horizontal tray in the rotating direction is located below the scraping plate, and the terminating end is located below the pushing plate; S2: Open the feed inlet to make the garbage fall into the uppermost horizontal tray, drive the central shaft to rotate half a circle, and each layer of horizontal tray passes below the scraping plate. The height of the garbage in the horizontal tray is leveled to the height of the enclosure by the scraping plate; S3: The blower at the air inlet blows external air and high-temperature flue gas in the flue gas pipeline towards the horizontal tray to dry the garbage therein; S4: After completing one-time garbage drying, drive the central shaft to rotate half a circle, and each layer of horizontal tray passes below the pushing plate. The garbage in the upper layer of horizontal tray is pushed into the lower layer of horizontal tray by the pushing plate. The garbage in the lowermost horizontal tray falls to the bottom of the drying chamber and enters the furnace opening of the incinerator from the discharge outlet, and return to step S2 to continue execution.

Images