CN217817997U - Garbage drying device - Google Patents

Abstract

A garbage drying device. The utility model discloses a solve how to separate out the recovery with light plastics direct in-process at rubbish stoving to and how to carry out make full use of's problem with the landfill gas of refuse landfill. The spiral track in the utility model is spirally arranged along the inner wall of the cylinder body and fixedly connected on the inner wall of the cylinder body for transmitting garbage materials, and the axial center of the spiral track forms an adsorption channel of light plastics; a garbage feeding pipe and an exhaust pipe are arranged at the top end of the barrel, a garbage discharging pipe is arranged at the bottom end of the barrel, a discharging port of the garbage feeding pipe is opposite to a feeding port of the spiral track, and a discharging port of the spiral track is communicated with the garbage discharging pipe at the bottom end of the barrel; the hot air conveying unit provides hot air into the cylinder; the plastic recovery unit is arranged on the exhaust pipe and is used for recovering the light plastic; the vibrator is arranged on the outer wall of the cylinder body and used for realizing forward movement of garbage on the spiral track. The utility model belongs to the technical field of landfill rubbish is dried.

Description

Garbage drying device

Technical Field

The utility model relates to a landfill rubbish drying equipment especially relates to a rubbish drying device.

Background

With the rapid development of economy and the acceleration of the urbanization development process in China, the total amount of garbage generated in the urban production and living process is rapidly increased, the urban garbage has negative effects on the ecological environment, and a large amount of garbage brings greater difficulty to garbage treatment. The method comprises the steps that generally, incineratable garbage is screened out from a garbage landfill, the screened-out incineratable garbage is generally dried on the spot by adopting garbage drying equipment in the garbage landfill, and then packaged and sent to a garbage incineration plant for incineration, and heat generated by garbage incineration can be used for power generation; the whole process has two problems: firstly, a large amount of landfill gas exists in the refuse landfill, the landfill gas belongs to low-calorific-value fuel gas, and high economic benefit can be created if the landfill gas is effectively utilized, but the collection and utilization of the landfill gas are not considered in the initial construction of most refuse landfills in China, and most of the landfill gas cannot be effectively utilized and is wasted; the current garbage drying equipment has low drying efficiency and more energy consumption, and increases the cost of the garbage treatment process. Secondly, because the waste incineration disposal comprises waste plastic bags with larger proportion, the waste plastic bags are main influence factors for the substandard tail gas emission of incineration power generation, and the waste plastic bags can be recycled, the waste plastic bags are generally separated from the waste incineration disposal before or after the waste is dried, and the cost of the waste disposal process is increased again.

Therefore, how to directly sort out the waste plastic bags in the process of drying the incineratable garbage in the garbage landfill and fully utilize the landfill gas of the garbage landfill is an urgent problem to be solved in the application.

Disclosure of Invention

The utility model discloses the technical problem that needs to solve is: how to directly separate and recycle the light plastics in the garbage drying process and how to fully utilize the landfill gas of the garbage landfill site is the problem which needs to be solved urgently; the application provides a rubbish drying device of separable light plastics, and this device directly utilizes landfill gas in rubbish landfill as fuel and supplies heat, realizes the stoving of rubbish and the make full use of the energy.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:

a garbage drying device comprises a cylinder, a spiral track, a hot air conveying unit, a plastic recovery unit and a vibrator; the spiral track is spirally arranged along the inner wall of the cylinder body and fixedly connected to the inner wall of the cylinder body for conveying garbage materials, and an adsorption channel of light plastics is formed at the axial center of the spiral track; the garbage discharging device comprises a barrel, a spiral track, a garbage discharging pipe, a garbage feeding pipe, an exhaust pipe, a garbage discharging pipe and a garbage discharging pipe, wherein the top end of the barrel is provided with the garbage feeding pipe and the exhaust pipe, the bottom end of the barrel is provided with the garbage discharging pipe, a discharging port of the garbage feeding pipe is over against a feeding port of the spiral track, and the discharging port of the spiral track is communicated with the garbage discharging pipe at the bottom end of the barrel; the hot air conveying unit provides hot air into the barrel; the plastic recovery unit is arranged on the exhaust pipe and is used for recovering the light plastic; the vibrator is arranged on the outer wall of the cylinder body and used for realizing forward movement of garbage on the spiral track.

As a preferable scheme: the plastic recovery unit comprises a semicircular shell, an arc-shaped separation screen plate, a scraper, a plastic recovery pipeline and a driving motor; an opening is formed in the side wall of the exhaust pipe, and the opening end of the semicircular shell is connected to the opening of the exhaust pipe; the arc-shaped separation screen plate is arranged in the exhaust pipe and is positioned at one side opposite to the semicircular shell, the inner arc surface of the arc-shaped separation screen plate is smoothly transited to the inner wall of the semicircular shell, and the arc-shaped separation screen plate and the semicircular shell form a similar circular cavity; the plastic recovery pipeline is arranged at the oblique upper corner of the semicircular shell and is communicated with the quasi-circular cavity; one end of the scraper is radially arranged at the center of the quasi-circular cavity through a rotating shaft, the scraper can rotate by taking the rotating shaft as a shaft, and the rotating shaft is driven to rotate by a driving motor.

As a preferable scheme: the length of the scraper blade is smaller than the radius length of the semicircular shell, and the radius length r of the semicircular shell is equal to the width a of the exhaust pipe.

As a preferable scheme: the barrel be fusiform, the port at barrel top is connected with the air inlet end of exhaust pipe, the port of barrel bottom is connected with the feed end of rubbish discharging pipe.

As a preferable scheme: the hot air conveying unit comprises an annular pipeline, a plurality of blowing pipes and a hot air inlet pipe, the annular pipeline is sleeved at the bottom end of the barrel, the plurality of blowing pipes are uniformly arranged on the annular pipeline in the circumferential direction, one ends of the blowing pipes are vertically inserted into the annular pipeline, and the other ends of the blowing pipes are vertically inserted into the barrel; the hot air inlet pipe is connected to the circular pipeline.

As a preferable scheme: the hot air conveying unit also comprises a combustion chamber, a circulating heat exchange pipe, a heat exchange chamber and an air inlet fan; a heat exchange working medium is arranged in the circulating heat exchange tube, and the cold end of the circulating heat exchange tube is positioned in the combustion chamber and exchanges heat with heat in the combustion chamber; the hot end of the circulating heat exchange pipe is positioned in the heat exchange cavity and exchanges heat with cold air entering the heat exchange cavity; and the air outlet of the heat exchange cavity is connected with the air inlet of the hot air inlet pipe.

As a preferable scheme: the circulating heat exchange tube is sequentially provided with a compressor and a throttler along the water flow direction.

As a preferable scheme: the hot air conveying unit further comprises a hot air circulating pipeline, an air outlet of the exhaust pipe is connected with an air inlet of the hot air circulating pipeline, and an air outlet of the hot air circulating pipeline is connected to the heat exchange cavity and communicated with the heat exchange cavity.

As a preferable scheme: the hot air circulation pipeline is sequentially provided with an air pump and a dehumidifier along the air flow direction.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model increases the length and time of garbage transmission by arranging the spiral track under the condition that the volume of the garbage incineration equipment is not changed, thereby increasing the contact time of the incineratable garbage and hot air and having good garbage drying effect; and the barrel and the spiral track can burn the garbage and jump forward due to inertia under the vibration of the vibrator, so that the garbage turning effect can be realized in the process, and the light plastic doped in the garbage can be exposed while the drying effect is ensured.

2. In the utility model, the dried plastic product enters the exhaust pipe from the adsorption channel under the double actions of hot air and the negative pressure of the exhaust pipe, and then the light plastic is recovered by the plastic recovery unit in the exhaust pipe; the utility model discloses not only make the waste that can burn dry, still can retrieve plastic products wherein, reduced the output of pollutant in the follow-up waste incineration in-process.

3. The utility model discloses can choose for use the landfill gas among the landfill site as rubbish drying equipment's heat source on the spot to solve the problem that the gaseous utilization degree of landfill is not enough and rubbish drying equipment consumes energy too high to present landfill site.

Description of the drawings:

for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic structural view of a plastic recycling unit;

FIG. 4 is a schematic structural view of a spiral track and a cross section of a cylinder;

FIG. 5 is a schematic view of a heat source in the hot air delivery unit.

In the figure, 1-cylinder; 1-1-a waste feed pipe; 1-2-a garbage discharge pipe; 1-3-exhaust pipe; 2-a spiral track; 3-a hot air circulation pipeline; 3-1-air pump; 3-2-dehumidifier; 4-a hot air delivery unit; 4-1-circular pipeline; 4-2-blowing pipe; 4-3-a hot air inlet pipe; 4-4-combustion chamber; 4-5-circulating heat exchange tubes; 4-6-a heat exchange chamber; 5-a plastic recovery unit; 5-1-semicircular shell; 5-2-arc barrier net plate; 5-3-scraper blade; 5-4-plastic recycling pipeline; 5-5-rotation axis; 5-6-quasi-circular cavity.

The specific implementation mode is as follows:

in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described below with reference to specific embodiments shown in the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

It should also be noted that, in order to avoid obscuring the invention with unnecessary details, only the structures and/or process steps that are closely related to the solution according to the invention are shown in the drawings, while other details that are not relevant to the invention are omitted.

The first specific implementation way is as follows: as shown in fig. 1, 2, 3, 4 and 5, the present embodiment adopts the following technical solutions, and includes a cylinder 1, a spiral track 2, a hot air conveying unit 4, a plastic recovery unit 5 and a vibrator; the spiral track 2 is spirally arranged along the inner wall of the barrel 1 and welded on the inner wall of the barrel 1 and used for conveying garbage materials, and the spiral track 2 is arranged under the condition that the volume of the garbage incineration equipment is not changed, so that the garbage conveying length and time are increased, the contact time of the incineratable garbage and hot air is prolonged, and the garbage drying effect is good; an adsorption channel of light plastic is formed in the axial center of the spiral track 2, the light plastic is a plastic product which is light in weight and can float up under the action of wind power, and the plastic product enters the exhaust pipe 1-3 from the adsorption channel under the double actions of hot air and the negative pressure of the exhaust pipe 1-3; wherein the bottom plate of the spiral track 2 is slightly inclined upwards (as shown in figure 4) to ensure that the blown plastic products can smoothly enter the exhaust duct 1-3; the bottom plate of the spiral track 2 can also be provided with a vent hole, so that hot air can directly dry the incineratable garbage through the vent hole on the spiral track 2, and the drying effect is improved;

the cylinder body 1 is supported on the ground through 3-4 supporting rods, the supporting rods are telescopic rod pieces, springs are sleeved on the supporting rods, the cylinder body 1 regularly shakes up and down through the supporting rods and the springs under the action of a vibrator, and the specific structural form of the supporting rods is the same as that of a supporting part at the bottom of an existing vibrating screen; the garbage incinerator is characterized in that a garbage feeding pipe 1-1 and an exhaust pipe 1-3 are arranged at the top end of the barrel body 1, a garbage discharging pipe 1-2 is arranged at the bottom end of the barrel body 1, a discharging port of the garbage feeding pipe 1-1 is over against a feeding port of the spiral track 2, a discharging port of the spiral track 2 is communicated with the garbage discharging pipe 1-2 at the bottom end of the barrel body 1, and incineratable garbage enters the barrel body 1 through the garbage feeding pipe 1-1 and falls into the feeding port of the spiral track 2; the incineratable garbage on the spiral track 2 can be conveyed along the spiral track 2 under the action of the vibrator, and then falls into the garbage discharging pipe 1-2 from the discharging port of the spiral track 2, and the incineratable garbage can be dried under the action of hot air in the whole conveying process;

the hot air conveying unit 4 provides hot air into the barrel 1; the plastic recovery unit 5 is arranged on the exhaust pipe 1-3 and is used for recovering light plastics; the vibrator is arranged on the outer wall of the barrel body 1 and used for realizing forward movement of garbage on the spiral track 2.

In the embodiment, the spiral track 2 is arranged under the condition that the volume of the garbage incineration equipment is not changed, so that the garbage conveying length and time are increased, the contact time of the incineratable garbage and hot air is prolonged, and the garbage drying effect is good; the barrel 1 and the spiral track 2 can burn the garbage to jump forward due to inertia under the vibration of the vibrator, so that the garbage can be turned over in the process, the drying effect is ensured, and light plastic doped in the garbage can be exposed; the plastic products in the incineratable garbage, such as plastic bags, are thin and do not absorb water, so the plastic products are easily dried by hot air, the dried plastic products enter the exhaust pipes 1-3 from the adsorption channel under the double actions of the hot air and the negative pressure of the exhaust pipes 1-3, and then the light plastic is recovered by the plastic recovery unit 5 in the exhaust pipes 1-3.

According to the embodiment, not only can the incineratable garbage be dried, but also the plastic products in the incineratable garbage can be recycled, so that the output of pollutants is reduced in the subsequent garbage incineration process.

The second embodiment is as follows: the embodiment is further limited by the first embodiment, and as shown in fig. 2 and 3, the plastic recovery unit 5 comprises a semicircular shell 5-1, an arc-shaped barrier screen plate 5-2, a scraper 5-3, a plastic recovery pipeline 5-4 and a driving motor; an opening is formed in the side wall of the exhaust pipe 1-3, and the opening end of the semicircular shell 5-1 is connected to the opening of the exhaust pipe 1-3; the arc-shaped separation screen plate 5-2 is arranged in the exhaust pipe 1-3 and is positioned at one side opposite to the semicircular shell 5-1, the inner arc surface of the arc-shaped separation screen plate 5-2 is smoothly transited to the inner wall of the semicircular shell 5-1, and the arc-shaped separation screen plate 5-2 and the semicircular shell 5-1 form a similar circular cavity 5-6; the plastic recovery pipeline 5-4 is arranged at the position of the oblique upper corner of the semicircular shell 5-1 and is communicated with the quasi-circular cavity 5-6, and the plastic recovery pipeline 5-4 is provided with a device which can generate negative pressure, such as an adsorption fan and the like; one end of the scraping plate 5-3 is radially arranged at the center of the quasi-circular cavity 5-6 through a rotating shaft 5-5 and can rotate by taking the rotating shaft 5-5 as a shaft, the rotating shaft 5-5 is driven to rotate through a driving motor, and the driving motor is a speed reducing motor.

In the embodiment, when a certain amount of plastic products are adsorbed in the exhaust pipe 1-3, due to the arrangement of the arc-shaped separation screen plate 5-2, the plastic products can be stacked on the arc-shaped separation screen plate 5-2, the driving motor drives the rotating shaft 5-5 to rotate, the rotating shaft 5-5 drives the scraper blade 5-3 to rotate clockwise, when the plastic products stacked on the arc-shaped separation screen plate 5-2 are to be scraped to the opening of the plastic recovery pipeline 5-4 by the scraper blade 5-3, the adsorption fan on the plastic recovery pipeline 5-4 is started, and the plastic products are adsorbed into the plastic recovery pipeline 5-4, so that the recovery of the plastic products is realized.

The third concrete implementation mode: the present embodiment is further defined by the first or second embodiment, wherein the length of the scraper 5-3 is slightly less than the radius length of the semicircular shell 5-1, and the radius length r of the semicircular shell 5-1 is equal to the width a of the exhaust duct 1-3.

The fourth concrete implementation mode is as follows: in order to enable plastic products to enter the exhaust pipes 1-3 and dried garbage to enter the garbage discharge pipes 1-2 more smoothly, the barrel 1 is fusiform, namely, the top end and the bottom end of the barrel 1 are both tapered, a port at the top of the barrel 1 is connected with an air inlet end of the exhaust pipes 1-3, and a port at the bottom of the barrel 1 is connected with a feed end of the garbage discharge pipes 1-2.

The fifth concrete implementation mode: the embodiment is further limited by the first, second, third or fourth specific embodiments, as shown in fig. 1, the hot air delivery unit 4 includes a circular pipeline 4-1, a plurality of blowpipes 4-2 and a hot air inlet pipe 4-3, the circular pipeline 4-1 is sleeved at the bottom end of the cylinder 1, the blowpipes 4-2 are uniformly circumferentially installed on the circular pipeline 4-1, one end of the blowpipe 4-2 is vertically inserted into the circular pipeline 4-1, and the other end of the blowpipe 4-2 is vertically inserted into the cylinder 1; the hot air inlet pipe 4-3 is connected to the circular pipeline 4-1.

In the embodiment, the hot air enters the circular pipeline 4-1 through the hot air inlet pipe 4-3 and is then uniformly distributed into the air blowing pipes 4-2, the air blowing pipes 4-2 are vertically and upwards arranged, so that the blown hot air is vertically and upwards and has the same air suction direction as that of the air exhaust pipes 1-3, and stable air flow is formed in the whole barrel 1, thereby being beneficial to recycling of plastic products.

The sixth specific implementation mode is as follows: the first, second, third, fourth or fifth specific embodiments are further limited, and as shown in fig. 5, the hot air delivery unit 4 further comprises a combustion chamber 4-4, a circulating heat exchange pipe 4-5, a heat exchange chamber 4-6 and an air inlet fan; a heat exchange working medium is arranged in the circulating heat exchange tube 4-5, and the cold end of the circulating heat exchange tube 4-5 is positioned in the combustion chamber 4-4 and exchanges heat with the heat in the combustion chamber 4-4; the hot end of the circulating heat exchange tube 4-5 is positioned in the heat exchange chamber 4-6 and exchanges heat with cold air entering the heat exchange chamber 4-6; and the air outlet of the heat exchange chamber 4-6 is connected with the air inlet of the hot air inlet pipe 4-3.

In the embodiment, the landfill gas in the refuse landfill can be selected on site as the fuel in the combustion chamber 4-4, so as to solve the problems of insufficient utilization degree of the landfill gas and high energy consumption of the refuse drying equipment in the prior refuse landfill.

In the present embodiment, the landfill gas in the landfill body is collected by using a landfill gas collecting device composed of a plurality of sets of porous gas collecting pipes and collecting pipes in a period of time (ranging from several weeks to several months depending on the volume of the landfill) before the excavation of the landfill body, the specific collecting time is determined by the volume scale of the landfill body, a relatively long collecting time is required when the landfill body is large, and the collected landfill gas is stored in the gas storage tank and waits for use. After a period of collection, the landfill gas in the landfill is substantially collected, after which excavation may be performed.

In the embodiment, landfill gas and air enter a combustion chamber 4-4 for combustion in a certain proportion through a flow regulating valve, a large amount of heat generated by combustion exchanges heat through a circulating heat exchange tube 4-5, high-strength cold air pumped by a fan at the bottom of a heat exchange chamber 4-6 exchanges heat with the hot end of the circulating heat exchange tube 4-5 in the heat exchange chamber 4-6 to form high-strength hot air, and then the high-strength hot air enters a cylinder 1 through a hot air inlet tube 4-3. Continuous high-strength hot air directly and fully dries the garbage through the ventilation holes on the spiral track 2.

The seventh embodiment: the embodiment is further limited by the first, second, third, fourth, fifth or sixth embodiment, and a compressor and a restrictor are sequentially arranged on the circulating heat exchange tube 4-5 along the water flow direction.

In the embodiment, the compressor and the throttler are arranged on the section of the circulating heat exchange tube 4-5 between the combustion chamber 4-4 and the heat exchange chamber 4-6, the compressor is arranged at the gradually heating section of the circulating heat exchange tube 4-5, and the throttler is arranged at the gradually cooling section of the circulating heat exchange tube 4-5.

The specific implementation mode is eight: the embodiment is further limited by the first, second, third, fourth, fifth, sixth or seventh embodiment, the hot air delivery unit 4 further comprises a hot air circulation pipeline 3, an air outlet of the exhaust duct 1-3 is connected with an air inlet of the hot air circulation pipeline 3, and an air outlet of the hot air circulation pipeline 3 is connected to the heat exchange chamber 4-6 and communicated with the heat exchange chamber 4-6.

In the embodiment, hot air with water vapor in the cylinder 1 is dehumidified and then enters the heat exchange chambers 4-6 for heating through the hot air circulation pipeline 3, and then enters the cylinder 1 through the hot air inlet pipe 4-3 for drying the garbage, so that circulation is realized, and a certain amount of fuel is saved.

The specific implementation method nine: the present embodiment is further limited to the first, second, third, fourth, fifth, sixth, seventh or eighth embodiment, and the air pump 3-1 and the dehumidifier 3-2 are sequentially disposed on the hot air circulation pipeline 3 along the air flow direction.

In the embodiment, the hot air circulation pipeline 3 enables the exhaust pipe 1-3 to be in a negative pressure state through the air suction effect of the air pump 3-1, and plays a circulating role in hot air; the dehumidifier 3-2 is used for removing water vapor in the hot air.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (9)

1. The utility model provides a rubbish drying device which characterized in that: the device comprises a cylinder body (1), a spiral track (2), a hot air conveying unit (4), a plastic recovery unit (5) and a vibrator; the spiral track (2) is spirally arranged along the inner wall of the cylinder body (1) and fixedly connected to the inner wall of the cylinder body (1) for conveying garbage materials, and an adsorption channel of light plastics is formed at the axial center of the spiral track (2); the garbage collection and treatment device is characterized in that a garbage feeding pipe (1-1) and an exhaust pipe (1-3) are arranged at the top end of the barrel body (1), a garbage discharging pipe (1-2) is arranged at the bottom end of the barrel body (1), a discharging port of the garbage feeding pipe (1-1) is over against a feeding port of the spiral track (2), and a discharging port of the spiral track (2) is communicated with the garbage discharging pipe (1-2) at the bottom end of the barrel body (1); the hot air conveying unit (4) provides hot air into the barrel (1); the plastic recovery unit (5) is arranged on the exhaust pipe (1-3) and is used for recovering light plastic; the vibrator is arranged on the outer wall of the cylinder body (1) and used for realizing forward movement of garbage on the spiral track (2).

2. The garbage drying device according to claim 1, characterized in that: the plastic recovery unit (5) comprises a semicircular shell (5-1), an arc-shaped separation screen plate (5-2), a scraper (5-3), a plastic recovery pipeline (5-4) and a driving motor; an opening is formed in the side wall of the exhaust pipe (1-3), and the opening end of the semicircular shell (5-1) is connected to the opening of the exhaust pipe (1-3); the arc-shaped blocking screen plate (5-2) is installed in the exhaust pipe (1-3), the concave surface of the arc-shaped blocking screen plate (5-2) is arranged opposite to the open end of the semicircular shell (5-1), the inner arc surface of the arc-shaped blocking screen plate (5-2) is smoothly transited to the inner wall of the semicircular shell (5-1), and the arc-shaped blocking screen plate (5-2) and the semicircular shell (5-1) form a similar circular cavity (5-6); the plastic recovery pipeline (5-4) is arranged at the oblique upper corner of the semicircular shell (5-1) and is communicated with the quasi-circular cavity (5-6); one end of the scraper (5-3) is radially arranged at the center of the quasi-circular cavity (5-6) through a rotating shaft (5-5) and can rotate by taking the rotating shaft (5-5) as a shaft, and the rotating shaft (5-5) is driven to rotate through a driving motor.

3. The garbage drying device according to claim 2, characterized in that: the length of the scraper (5-3) is smaller than the radius length of the semicircular shell (5-1), and the radius length r of the semicircular shell (5-1) is equal to the width a of the exhaust pipe (1-3).

4. A waste drying apparatus as claimed in claim 3, wherein: the garbage can is characterized in that the barrel (1) is fusiform, the port at the top of the barrel (1) is connected with the air inlet end of the exhaust pipe (1-3), and the port at the bottom of the barrel (1) is connected with the feed end of the garbage discharge pipe (1-2).

5. The garbage drying device according to claim 1, characterized in that: the hot air conveying unit (4) comprises a circular pipeline (4-1), a plurality of blowing pipes (4-2) and a hot air inlet pipe (4-3), the circular pipeline (4-1) is sleeved at the bottom end of the barrel body (1), the plurality of blowing pipes (4-2) are uniformly arranged on the circular pipeline (4-1) in the circumferential direction, one end of each blowing pipe (4-2) is vertically inserted into the circular pipeline (4-1), and the other end of each blowing pipe (4-2) is vertically inserted into the barrel body (1); the hot air inlet pipe (4-3) is connected to the circular pipeline (4-1).

6. The garbage drying device according to claim 5, wherein: the hot air conveying unit (4) further comprises a combustion chamber (4-4), a circulating heat exchange pipe (4-5), a heat exchange chamber (4-6) and an air inlet fan; a heat exchange working medium is arranged in the circulating heat exchange tube (4-5), and the cold end of the circulating heat exchange tube (4-5) is positioned in the combustion chamber (4-4) and exchanges heat with heat in the combustion chamber (4-4); the hot end of the circulating heat exchange tube (4-5) is positioned in the heat exchange chamber (4-6) and exchanges heat with cold air entering the heat exchange chamber (4-6); the air outlet of the heat exchange chamber (4-6) is connected with the air inlet of the hot air inlet pipe (4-3).

7. The waste drying device according to claim 6, characterized in that: and the circulating heat exchange tubes (4-5) are sequentially provided with a compressor and a throttler along the water flow direction.

8. The waste drying device according to claim 7, characterized in that: the hot air conveying unit (4) further comprises a hot air circulating pipeline (3), an air outlet of the exhaust pipe (1-3) is connected with an air inlet of the hot air circulating pipeline (3), and an air outlet of the hot air circulating pipeline (3) is connected to the heat exchange cavity (4-6) and communicated with the heat exchange cavity (4-6).

9. The waste drying device according to claim 8, wherein: the hot air circulating pipeline (3) is sequentially provided with an air pump (3-1) and a dehumidifier (3-2) along the air flow direction.

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