Ash bucket structure for garbage incinerator

Abstract

The utility model discloses an ash bucket structure for a garbage incinerator, which comprises an ash bucket main body, the ash bucket main body is communicated with an ash outlet of the incinerator, a hollow cooling interlayer is arranged in the ash bucket main body, two opposite sides of the ash bucket main body are respectively provided with an air inlet and an air outlet, and the air inlet and the air outlet are both communicated with the hollow cooling interlayer. The air inlet is connected with an air inducing device, the air outlet is connected with an air outlet pipe, and the tail end of the air outlet pipe is communicated with the drying section of the incinerator. According to the ash bucket, ash in the ash bucket body can be cooled, heat energy of the ash can be recycled, combustion of garbage is facilitated, power consumption and maintenance cost of a factory can be saved, meanwhile, the failure occurrence rate of equipment is effectively reduced, the stability of the running equipment is improved, and the running cycle of the equipment is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of garbage incineration equipment, and in particular relates to an ash hopper structure for a garbage incinerator. Background Art

[0002] At present, the main method of garbage disposal is landfill, but it has the disadvantages of occupying a large area, difficult to handle leachate, and secondary pollution of the surrounding environment. Waste incineration power generation technology has become a new trend and new hot spot for many cities to solve the problem of garbage disposal. The waste incineration method can reduce the volume of garbage by 90% and the amount by 70%-80%, greatly reducing the occupied land area, meeting the requirements of reduction; the waste heat from garbage incineration can also be used for heating and power generation to achieve energy recovery. Usually, domestic garbage is transported to the garbage incineration treatment plant by garbage transport trucks, and after being weighed, it enters the garbage unloading platform and is dumped into the garbage storage pit according to the unloading door specified by the control system. The garbage in the garbage storage pit is fed into the feeding system by the crane grab located above the garbage storage pit, and then enters the incineration chamber through the feeding system for incineration.

[0003] A large amount of ash is generated when a waste incinerator is used, and the ash needs to be discharged in time. Prior art CN208817489U discloses a metal structure of a waste incinerator ash hopper, including a waste incinerator, a conical ash hopper is arranged below the waste incinerator, an ash conveying assembly is arranged below the conical ash hopper, a driving motor is arranged on one side of the ash conveying assembly, and a coupling is arranged between the ash conveying assembly and the driving motor, the ash generated by the waste incinerator falls into the ash conveying assembly through the conical ash hopper, and the rotation of the spiral ash conveying shaft rod is driven by the rotation of the driving motor, so that the ash dropped from the waste incinerator is transported to a designated place through the ash conveying assembly for centralized storage, so as to facilitate subsequent processing, an ash hopper flange is arranged at the top of the conical ash hopper, and the top bucket body of the conical ash hopper is fixedly connected to the ash outlet of the incinerator at the bottom of the waste incinerator through fastening bolts, the ash hopper flange and the ash outlet flange, and in this way, it is convenient to connect the conical ash hopper with the waste incinerator when in use.

[0004] The above patent adopts a spiral ash conveying device to transport ash, but the flue gas and ash temperature of the conical ash discharge hopper is relatively high, and the actual operating temperature is above 650°C. Although the spiral ash conveying equipment can be made of heat-resistant materials, the conical ash discharge hopper lacks ash cooling equipment. The high-temperature ash directly enters the spiral ash conveying equipment, which has problems such as severe blade wear, drive shaft breakage, and spiral ash conveying equipment blockage, resulting in the need for regular maintenance and replacement of the spiral ash conveying equipment, and even causing shutdowns, increasing equipment maintenance and spare parts replacement costs. Utility Model Content

[0005] The utility model aims to provide an ash hopper structure for a garbage incinerator, which is used to solve the above problems existing in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an ash hopper structure for a waste incinerator, comprising an ash hopper main body, the ash hopper main body is connected to the ash outlet of the incinerator, a hollow cooling interlayer is arranged inside the ash hopper main body, and an air inlet and an air outlet are respectively arranged on opposite sides of the ash hopper main body, the air inlet and the air outlet are both connected to the hollow cooling interlayer, the air inlet is connected to an air induced device, the air outlet is connected to an air outlet pipe, and the end of the air outlet pipe is connected to the drying section of the incinerator.

[0007] As an optional implementation of the above technical solution, the ash hopper body includes an ash hopper outer layer and an ash hopper inner layer, the hollow cooling interlayer is formed between the ash hopper outer layer and the ash hopper inner layer, and the air inlet and the air outlet are both arranged on the ash hopper outer layer structure.

[0008] As an optional implementation of the above technical solution, the wall thickness of the outer layer and the inner layer of the ash hopper are both 4-8 mm.

[0009] As an optional implementation of the above technical solution, the wall thickness of the outer layer and the inner layer of the ash hopper are both 6 mm.

[0010] As an optional implementation of the above technical solution, the thickness of the hollow cooling interlayer is 20-60 mm.

[0011] As an optional implementation of the above technical solution, the thickness of the hollow cooling interlayer is 40 mm.

[0012] As an optional implementation of the above technical solution, the bottom of the ash hopper body is a conical structure.

[0013] As an optional implementation of the above technical solution, the inclination angle of the bottom side wall of the ash hopper body is greater than 60°.

[0014] As an optional implementation of the above technical solution, a heat-insulating and scalding-proof layer is provided on the outer side of the ash hopper body.

[0015] As an optional implementation of the above technical solution, the air induction device includes a primary fan, and an air induction duct is provided between the primary fan and the air inlet.

[0016] As an optional implementation of the above technical solution, the ash hopper structure includes at least two ash hopper bodies, the air inlet of each ash hopper body is connected to the air induced device, and the air outlet of each ash hopper body is connected to the drying section of the incinerator.

[0017] The beneficial effects of the utility model are:

[0018] The utility model provides an ash hopper structure for a garbage incinerator, wherein a hollow cooling interlayer is provided inside the ash hopper body, an air inlet and an air outlet are both connected to the hollow cooling interlayer, an air inlet is connected to an air induced device, an air outlet is connected to an air outlet pipe, and the end of the air outlet pipe is connected to the drying section of the incinerator. The air induced device is used to introduce cooling fresh air, and the cooling fresh air enters the hollow cooling interlayer from the air inlet, and the heat of the ash is transferred to the ash hopper body. The cooling fresh air can dissipate heat from the ash hopper body to achieve the cooling function of the ash. In addition, the cooling fresh air absorbs the heat of the ash hopper body and becomes hot air. The hot air can enter the drying section of the incinerator through the air outlet pipe to achieve the drying function of the garbage in the incinerator. The utility model can cool the ash inside the ash hopper body and recycle the heat energy of the ash, which is beneficial to the combustion of garbage. It can save factory electricity and maintenance costs, and effectively reduce the occurrence rate of equipment failures, improve the stability of operating equipment and extend the equipment operation cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of an ash hopper structure in one embodiment of the utility model;

[0020] Figure 2 It is a top view of the ash hopper body in one embodiment of the utility model.

[0021] In the figure: 1-ash hopper body; 2-hollow cooling interlayer; 3-air inlet; 4-air outlet; 5-air outlet pipe; 6-ash hopper outer layer; 7-ash hopper inner layer; 8-primary fan; 9-draft duct. DETAILED DESCRIPTION

[0022] like Figure 1 and Figure 2 As shown, this embodiment provides an ash hopper structure for a waste incinerator, including an ash hopper body 1, wherein the ash hopper body 1 is connected to the ash outlet of the incinerator, the ash hopper body 1 is arranged at the bottom of the incinerator, the ash outlet of the incinerator is connected to the feed port of the ash hopper body 1, so that the ash generated by the incinerator can directly enter the ash hopper body 1, and the discharge port of the ash hopper body 1 can be provided with an ash output device, such as an ash output pipe, to lead out the ash.

[0023] A hollow cooling interlayer 2 is provided inside the ash hopper body 1, and an air inlet 3 and an air outlet 4 are respectively provided on opposite sides of the ash hopper body 1. The air inlet 3 is arranged on the right side of the ash hopper body 1, and the air outlet 4 is arranged on the left side of the ash hopper body 1. The air inlet 3 and the air outlet 4 are both connected to the hollow cooling interlayer 2. Air can enter the hollow cooling interlayer 2 through the air inlet 3, take away the heat of the ash, and then be discharged from the air outlet 4.

[0024] like Figure 1As shown, the air inlet 3 is connected to an air induction device, the air outlet 4 is connected to an air outlet pipe 5, and the end of the air outlet pipe 5 is connected to the drying section of the incinerator. The air induction device is used to introduce cooling fresh air, and the cooling fresh air enters the hollow cooling interlayer 2 from the air inlet 3, and the heat of the ash is transferred to the ash hopper body 1. The cooling fresh air can dissipate heat from the ash hopper body 1 to achieve the function of cooling the ash. In addition, the cooling fresh air absorbs the heat of the ash hopper body 1 and becomes hot air. The hot air can enter the drying section of the incinerator through the air outlet pipe 5 to achieve the function of drying the garbage in the incinerator.

[0025] The utility model can cool the ash inside the ash hopper body 1 and recycle the heat energy of the ash, which is beneficial to the combustion of garbage. It can save factory electricity and maintenance costs, and effectively reduce the occurrence rate of equipment failures, improve the stability of operating equipment and extend the equipment operation cycle.

[0026] In one embodiment, the top of the ash hopper body 1 is a rectangular structure, and the bottom of the ash hopper body 1 is a conical structure to facilitate smooth ash falling. Preferably, the bottom side wall of the ash hopper body 1 has an inclination angle of more than 60°, so that the ash slag of the ash hopper body 1 falls smoothly.

[0027] Among them, the outer side of the ash hopper body 1 is provided with a thermal insulation and anti-scalding layer, which has a thermal insulation function to reduce the heat loss of the ash slag, and the thermal insulation and anti-scalding layer has an anti-scalding function to prevent the staff from touching the outer wall of the ash hopper body 1 and causing scalding accidents.

[0028] like Figure 1 As shown, in one embodiment, the air induced device includes a primary fan 8, and an air induced duct 9 is provided between the primary fan 8 and the air inlet 3, and the cooling fresh air generated by the primary fan 8 enters the hollow cooling interlayer 2 through the air induced duct 9.

[0029] like Figure 2 As shown, specifically, the ash hopper body 1 includes an ash hopper outer layer 6 and an ash hopper inner layer 7, the hollow cooling interlayer 2 is formed between the ash hopper outer layer 6 and the ash hopper inner layer 7, and the air inlet 3 and the air outlet 4 are both arranged on the ash hopper outer layer 6 structure. The heat preservation and scalding prevention layer is arranged on the outer wall of the ash hopper outer layer 6, the ash hopper outer layer 6 and the ash hopper inner layer 7 have the same appearance, the ash hopper outer layer 6 is arranged on the outside of the ash hopper inner layer 7, and the ash hopper outer layer 6 and the ash hopper inner layer 7 maintain a suitable distance, so that a sealed hollow cooling interlayer 2 is formed between the ash hopper outer layer 6 and the ash hopper inner layer 7, and the cooling fresh air can flow along the hollow cooling interlayer 2 to dissipate heat from the ash hopper body 1, thereby cooling the ash slag.

[0030] In one embodiment, the wall thickness of the ash hopper outer layer 6 and the ash hopper inner layer 7 are both 4-8 mm, and the thickness of the hollow cooling interlayer 2 is 20-60 mm. Preferably, the wall thickness of the ash hopper outer layer 6 and the ash hopper inner layer 7 are both 6 mm, and the thickness of the hollow cooling interlayer 2 is 40 mm. The hollow cooling interlayer 2 maintains a suitable thickness to dissipate heat from the ash hopper body 1, and the heat of the ash hopper body 1 can be introduced into the incinerator to dry the garbage in the drying section.

[0031] In one embodiment, the ash hopper structure includes at least two ash hopper bodies 1, which are arranged side by side at the bottom of the incinerator, and the air inlet 3 of each ash hopper body 1 is connected to the air induction device, and the air outlet 4 of each ash hopper body 1 is connected to the drying section of the incinerator. The ash of an incinerator is led out by two ash hopper bodies 1, thereby improving the waste heat recovery effect of the ash.

[0032] The utility model utilizes the hollow cooling interlayer 2 to cool the ash, and the cooling fresh air is taken from the outlet of the primary fan 8. After the heat exchange in the hollow cooling interlayer 2, the hot air temperature reaches 274°C, and is led to a primary air chamber through the air outlet pipe 5 to dry the garbage in the drying section, which is beneficial to the combustion of garbage. After the air-cooled ash hopper is modified, the spiral ash conveying equipment can be omitted, and the low-temperature ash can be directly output by pipeline, without the need to use the spiral ash conveying equipment, and the purchase cost of the spiral ash conveying equipment spare parts can be reduced each year, saving 40,000 yuan in spare parts costs each year. In addition, by reducing one reducer and reducing the power consumption of the equipment, it is estimated that the power consumption can be saved each year, saving about 45,000 yuan each year. The utility model can greatly save the factory's electricity and maintenance costs, while effectively reducing the occurrence rate of equipment failures, improving the stability of the operating equipment and extending the equipment operation cycle.

[0033] In the description of the present utility model, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, and may be fixedly connected, detachably connected, or integrated; may be mechanically connected or electrically connected; may be directly connected or indirectly connected through an intermediate medium, may be the internal connection of two components or the interaction relationship between two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood. In addition, the specific features, structures, etc. described in the embodiments are included in at least one embodiment. In the absence of mutual contradictions, those skilled in the art may combine the features of different embodiments. The scope of protection of the present utility model is not limited to the above-mentioned specific embodiments. According to the basic technical concept of the present utility model, the embodiments that can be associated with by ordinary technicians in this field without creative work all belong to the scope of protection of the present utility model.

Claims

1. An ash hopper structure for a garbage incinerator, characterized in that: The invention comprises an ash hopper body (1), wherein the ash hopper body (1) is connected to the ash outlet of the incinerator, a hollow cooling interlayer (2) is arranged inside the ash hopper body (1), an air inlet (3) and an air outlet (4) are arranged on opposite sides of the ash hopper body (1), the air inlet (3) and the air outlet (4) are both connected to the hollow cooling interlayer (2), the air inlet (3) is connected to an air induction device, the air outlet (4) is connected to an air outlet pipe (5), and the end of the air outlet pipe (5) is connected to the drying section of the incinerator.

2. The ash hopper structure for a waste incinerator according to claim 1, characterized in that: The ash hopper body (1) comprises an ash hopper outer layer (6) and an ash hopper inner layer (7), the hollow cooling interlayer (2) is formed between the ash hopper outer layer (6) and the ash hopper inner layer (7), and the air inlet (3) and the air outlet (4) are both arranged on the ash hopper outer layer (6) structure.

3. The ash hopper structure for a waste incinerator according to claim 2, characterized in that: The wall thickness of the ash hopper outer layer (6) and the ash hopper inner layer (7) are both 6 mm.

4. The ash hopper structure for a waste incinerator according to claim 1, characterized in that: The thickness of the hollow cooling interlayer (2) is 20-60 mm.

5. The ash hopper structure for a waste incinerator according to claim 4, characterized in that: The thickness of the hollow cooling interlayer (2) is 40 mm.

6. The ash hopper structure for a waste incinerator according to claim 1, characterized in that: The bottom of the ash hopper body (1) is in a conical structure.

7. The ash hopper structure for a waste incinerator according to claim 6, characterized in that: The bottom side wall of the ash hopper body (1) has an inclination angle of more than 60°.

8. The ash hopper structure for a waste incinerator according to claim 1, characterized in that: The outer side of the ash hopper body (1) is provided with a heat-insulating and scalding-proof layer.

9. The ash hopper structure for a waste incinerator according to claim 1, characterized in that: The air induction device comprises a primary fan (8), and an air induction pipe (9) is provided between the primary fan (8) and the air inlet (3).

10. The ash hopper structure for a waste incinerator according to claim 1, characterized in that: The ash hopper structure comprises at least two ash hopper bodies (1), the air inlet (3) of each ash hopper body (1) is connected to the air induction device, and the air outlet (4) of each ash hopper body (1) is connected to the drying section of the incinerator.

Images