Air distribution device of garbage incinerator

Abstract

The utility model relates to a garbage incinerator air distribution device which comprises a primary air channel and a secondary air channel, the primary air channel is used for being communicated with the bottom of an incinerator body, one end of the secondary air channel is connected with the primary air channel, and the other end of the secondary air channel is used for being connected and communicated with the top of the incinerator body; a secondary air fan and a first blocking valve are arranged in the secondary air channel, the first blocking valve is located between the secondary air fan and the primary air channel, the garbage incinerator air distribution device comprises a smoke inlet channel and a cold air channel, one end of the smoke inlet channel is connected and communicated with the secondary air channel, and the other end of the smoke inlet channel is connected and communicated with the cold air channel. The cold air channel is connected and communicated with the secondary air channel, and the smoke inlet channel and the cold air channel are both located between the secondary fan and the first stop valve. The garbage drying device has the effect that the garbage drying efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of waste incineration, and in particular to a waste incinerator air distribution device. Background Technology

[0002] The air distribution system for a waste incinerator is a device that distributes air to the incinerator in batches.

[0003] In related technologies, air needs to be introduced during waste incineration to maintain the oxygen required for combustion. The introduced air is divided into multiple channels: primary air, secondary air, and recirculated flue gas. Primary air is hot air, introduced under the grate, used to mix with the waste for drying, combustion, and complete burning. Secondary air is introduced into secondary air ducts inside the furnace, located above the waste to be incinerated. Secondary air includes at least one of the following sources: cold air introduced from the top of the furnace, and recirculated flue gas introduced from the exhaust duct of the induced draft fan; wherein the recirculated flue gas is the flue gas generated after the waste is mixed and burned.

[0004] Regarding the aforementioned technologies, the inventors believe that the following defects exist: when the incinerator is started, since only primary air is used to dry the waste from under the grate, and there is no circulating flue gas, the secondary air only includes cold air introduced from the top of the furnace, resulting in low drying efficiency for the waste. Utility Model Content

[0005] In order to improve the drying efficiency of waste and enable the grate temperature to rise rapidly during startup, this application provides an air distribution device for a waste incinerator.

[0006] The air distribution device for a waste incinerator provided in this application adopts the following technical solution:

[0007] A waste incinerator air distribution device includes a primary air duct and a secondary air duct. The primary air duct is connected to the bottom of the incinerator body. One end of the secondary air duct is connected to the primary air duct, and the other end of the secondary air duct is connected to the top of the incinerator body. A secondary air fan and a first blocking valve are installed in the secondary air duct. The first blocking valve is located between the secondary air fan and the primary air duct. The waste incinerator air distribution device includes a flue gas inlet duct and a cold air duct. One end of the flue gas inlet duct is connected to the secondary air duct, and the cold air duct is connected to the secondary air duct. Both the flue gas inlet duct and the cold air duct are located between the secondary air fan and the first blocking valve.

[0008] By adopting the above technical solution, during the start-up phase, the first blocking valve is opened, and part of the hot air in the primary air channel enters the secondary air channel through the first blocking valve. The secondary fan blows this part of the hot air to the top of the incinerator body, so that the top and bottom of the incinerator body can dry the waste, thereby improving the drying efficiency of the waste. Attached Figure Description

[0009] Figure 1 This is a structural schematic diagram of the air distribution device for the waste incinerator in this application.

[0010] Figure 2 This is a structural schematic diagram of the incinerator body and its components.

[0011] Reference numerals in the attached drawings: 1. Primary air duct; 11. Sliding groove; 2. Secondary air duct; 21. Secondary air fan; 22. First blocking valve; 3. Incinerator body; 4. Smoke inlet duct; 41. Third blocking valve; 5. Cold air duct; 51. Second blocking valve; 6. Dispersing component; 61. Rotating part; 62. Air diffuser; 63. Rotating shaft; 64. Sliding block; 65. Return spring; 7. Dispersing tube; 71. First dispersing tube; 72. Second dispersing tube; 8. Blocking rod; 9. Dispersing hole. Detailed Implementation

[0012] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0013] This application discloses an air distribution device for a waste incinerator. (Refer to...) Figure 1 as well as Figure 2 A waste incinerator air distribution device includes a primary air duct 1 and a secondary air duct 2. The primary air duct 1 is connected to the bottom of the incinerator body 3. One end of the secondary air duct 2 is connected to the primary air duct 1, and the other end of the secondary air duct 2 is connected to the top of the incinerator body 3. A secondary air fan 21 and a first blocking valve 22 are installed in the secondary air duct 2. The first blocking valve 22 is located between the secondary air fan 21 and the primary air duct 1. The waste incinerator air distribution device includes a flue gas inlet duct 4 and a cold air duct 5. One end of the flue gas inlet duct 4 is connected to the secondary air duct 2, and the cold air duct 5 is connected to the secondary air duct 2. Both the flue gas inlet duct 4 and the cold air duct 5 are located between the secondary air fan 21 and the first blocking valve 22.

[0014] When the waste incinerator air distribution device is started, the first blocking valve 22 opens, connecting the primary air channel 1 and the secondary air channel 2. The secondary air fan 21 starts, and hot air is sent into the primary air channel 1. Part of the hot air is sent to the bottom of the incinerator body 3 through the primary air channel 1, and the other part of the hot air is driven by the secondary air fan 21 to enter the top of the incinerator body 3. This allows the waste to be dried simultaneously at the bottom and top of the incinerator body 3 when the waste incinerator air distribution device is started, thereby improving operating efficiency.

[0015] In some implementations, refer to Figure 1 as well as Figure 2The waste incinerator air distribution device has a first state in which the first blocking valve 22 is open and the primary air channel 1 is connected to the secondary air channel 2. The waste incinerator air distribution device has a second state in which the first blocking valve 22 is closed and the primary air channel 1 is blocked from the secondary air channel 2.

[0016] Specifically, refer to Figure 1 as well as Figure 2 When the waste in the incinerator body 3 is dried and combustion begins, the first blocking valve 22 closes, and the combustion flue gas enters the flue gas inlet channel 4 and mixes with the cold air in the cold air channel 5, and is sent to the top of the incinerator body 3 to regulate the temperature inside the furnace. Furthermore, if the flue gas temperature in the flue gas inlet channel 4 is insufficient to heat the incinerator body 3 during use, the first blocking valve 22 can also be opened to send the hot air in the primary air channel into the secondary air channel 2 to regulate the temperature inside the incinerator body 3.

[0017] In some implementations, refer to Figure 1 as well as Figure 2 The waste incinerator air distribution device includes a second blocking valve 51, which is located in the cold air duct 5 and is connected to the inner wall of the cold air duct 5; the waste incinerator air distribution device includes a third blocking valve 41, which is located in the flue gas duct 4 and is connected to the inner wall of the flue gas duct 4.

[0018] Specifically, refer to Figure 1 as well as Figure 2 The smoke inlet duct 4 and the cold air duct 5 are both located on the same side of the secondary air duct 2.

[0019] In use, the air intake of the primary air passage 1, the smoke inlet passage 4, and the cold air passage 5 can be controlled by adjusting the opening degree of the second blocking valve 51, the third blocking valve 41, and the first blocking valve 22. This allows for temperature regulation within the incinerator body 3, enabling more convenient temperature control and adapting to a wider range of operating conditions. The air intake in the secondary air passage includes one or more of the primary air passage 1, the smoke inlet passage 4, and the cold air passage 5.

[0020] In some implementations, refer to Figure 1 as well as Figure 2 A dispersing component 6 is provided inside the primary air duct 1. The dispersing component 6 includes a rotating part 61 and a diffuser 62. The rotating part 61 is rotatably connected to the inner wall of the primary air duct 1, and the diffuser 62 is connected to the rotating part 61.

[0021] Specifically, refer to Figure 1 as well as Figure 2 The air diffuser 62 protrudes from the surface of the rotating part 61 to the surface away from the rotating part 61. A plurality of air diffusers 62 are provided, and the plurality of air diffusers 62 are distributed circumferentially along the axis of the rotating part 61.

[0022] In use, the hot air from the primary air duct 1 blows the air diffuser 62, causing the rotating part 61 to rotate. The air diffuser 62 guides the hot air from the primary air duct 1 to different parts of the incinerator body 3, thereby improving the uniformity of the hot air blowing into the incinerator body 3 and improving the efficiency of waste incineration.

[0023] In some implementations, refer to Figure 1 as well as Figure 2 The dispersing component 6 includes a rotating shaft 63, a sliding block 64, and a return spring 65. The rotating shaft 63 is connected to the rotating part 61. A sliding groove 11 is provided on the inner wall of the primary air channel 1. The sliding block 64 is slidably connected to the sliding groove 11. One end of the return spring 65 is connected to the sliding block 64, and the other end of the return spring 65 is connected to the groove wall of the sliding groove 11. The rotating shaft 63 is rotatably connected to the sliding block 64. In use, the hot air in the primary air channel can blow the rotating part 61 and the sliding block 64 upward. The return spring 65 drives the sliding block 64 to return to its original position, realizing the up-and-down shaking of the rotating part 61 and the sliding block 64. The up-and-down shaking of the rotating part 61 and the air diffuser 62 can further improve the uniformity of hot air dispersion.

[0024] Specifically, there are two sliding grooves 11, which are arranged opposite to each other. Both sliding grooves 11 are dovetail grooves. There are also two sliding blocks 64, which correspond one-to-one with the two sliding grooves 11. There are also two return springs 65, which correspond one-to-one with the two sliding blocks 64. One end of the return spring 65 is fixedly connected to the sliding block 64, and the other end of the return spring 65 is fixedly connected to the groove wall of the sliding groove 11.

[0025] In some implementations, refer to Figure 1 as well as Figure 2 The waste incinerator air distribution device includes several distribution pipes 7. One end of the distribution pipe 7 is located in the primary air channel 1, and the other end of the distribution pipe 7 extends into the incinerator body 3.

[0026] Specifically, the air distribution device for the waste incinerator includes several blocking rods 8, which are interconnected and fixedly connected to the inner wall of the primary air duct 1. The blocking rods 8 are used to prevent waste from entering the primary air duct 1, and several dispersing pipes 7 are fixedly connected to the blocking rods 8.

[0027] During use, the hot air in the primary air duct 1 is dispersed into the waste inside the incinerator body 3 through the dispersion pipe 7, which further improves the uniformity of the hot air in the waste incineration process and improves the incineration efficiency.

[0028] In some implementations, refer to Figure 1 as well as Figure 2The plurality of dispersion tubes 7 include a first dispersion tube 71 and a second dispersion tube 72, wherein the length of the first dispersion tube 71 is greater than or less than the length of the second dispersion tube 72. By setting the heights of the first dispersion tube 71 and the second dispersion tube 72 differently, the uniformity of hot air during the waste incineration process can be further improved, thereby increasing the incineration efficiency. Specifically, the length of the first dispersion tube 71 is less than the length of the second dispersion tube 72.

[0029] In some implementations, refer to Figure 1 as well as Figure 2 The side wall of the dispersion tube 7 is provided with several dispersion holes 9, which are located inside the incinerator body 3. The dispersion holes 9 enable the hot air to be uniform during the waste incineration process, thereby improving the incineration efficiency.

[0030] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A waste incinerator air distribution device, characterized in that: The device includes a primary air duct (1) and a secondary air duct (2). The primary air duct (1) is used to communicate with the bottom of the incinerator body (3). One end of the secondary air duct (2) is connected to the primary air duct (1), and the other end of the secondary air duct (2) is used to connect and communicate with the top of the incinerator body (3). A secondary air fan (21) and a first blocking valve (22) are provided in the secondary air duct (2). The first blocking valve (22) is located between the secondary air fan (21) and the primary air duct (1). The waste incinerator air distribution device includes a smoke inlet duct (4) and a cold air duct (5). One end of the smoke inlet duct (4) is connected and communicated with the secondary air duct (2). The cold air duct (5) is connected and communicated with the secondary air duct (2). The smoke inlet duct (4) and the cold air duct (5) are both located between the secondary air fan (21) and the first blocking valve (22).

2. The waste incinerator air distribution device according to claim 1, characterized in that: The waste incinerator air distribution device has a first state in which the first blocking valve (22) is open and the primary air channel (1) is connected to the secondary air channel (2). The waste incinerator air distribution device has a second state in which the first blocking valve (22) is closed and the primary air channel (1) is blocked from the secondary air channel (2).

3. The waste incinerator air distribution device according to claim 1, characterized in that: The waste incinerator air distribution device includes a second blocking valve (51), which is located inside the cold air channel (5) and is connected to the inner wall of the cold air channel (5); the waste incinerator air distribution device includes a third blocking valve (41), which is located inside the smoke inlet channel (4) and is connected to the inner wall of the smoke inlet channel (4).

4. The waste incinerator air distribution device according to claim 1, characterized in that: A dispersing component (6) is provided inside the primary air duct (1). The dispersing component (6) includes a rotating part (61) and a diffuser (62). The rotating part (61) is rotatably connected to the inner wall of the primary air duct (1), and the diffuser (62) is connected to the rotating part (61).

5. The waste incinerator air distribution device according to claim 4, characterized in that: The dispersing component (6) includes a rotating shaft (63), a sliding block (64), and a return spring (65). The rotating shaft (63) is connected to the rotating part (61). The inner wall of the primary air channel (1) is provided with a sliding groove (11). The sliding block (64) is slidably connected to the sliding groove (11). One end of the return spring (65) is connected to the sliding block (64), and the other end of the return spring (65) is connected to the groove wall of the sliding groove (11). The rotating shaft (63) is rotatably connected to the sliding block (64).

6. The waste incinerator air distribution device according to claim 4, characterized in that: The waste incinerator air distribution device includes several distribution pipes (7), one end of which is located in the primary air channel (1), and the other end of which extends into the incinerator body (3).

7. The waste incinerator air distribution device according to claim 6, characterized in that: The plurality of dispersion tubes (7) include a first dispersion tube (71) and a second dispersion tube (72), wherein the length of the first dispersion tube (71) is greater than or less than that of the second dispersion tube (72).

8. The waste incinerator air distribution device according to claim 6, characterized in that: The sidewall of the dispersion tube (7) is provided with a plurality of dispersion holes (9), and the plurality of dispersion holes (9) are located inside the incinerator body (3).

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