Sealed cooling air supply system of incinerator

Abstract

The sealed cooling air supply system comprises a furnace body, a drying section, a main combustion section, an auxiliary combustion section, a burnout section, an air guide shell, a filter screen, a hot air mechanism, a cold air mechanism and a cleaning mechanism, the air guide shell is arranged on the outer side of the furnace body, the filter screen is arranged on the outer surface of the air guide shell, the hot air mechanism is arranged on the outer surface of the air guide shell, and the cold air mechanism is arranged on the outer surface of the air guide shell. The hot air mechanism is fixedly connected with the drying section, the main combustion section, the auxiliary combustion section and the burnout section, the cold air mechanism is arranged on the outer side of the furnace body and fixedly connected with the hot air mechanism, and the cleaning mechanism is rotationally arranged on the outer surface of the filter screen. Independent adjustment of the primary air temperature of the burnout section of the boiler body can be achieved, so that the heat efficiency of the boiler is further improved, slag of the burnout section can be effectively cooled, heat of the slag is fully utilized, and meanwhile the generation amount of water vapor of the slag conveyor can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of incinerator technology, and in particular to a sealed cooling air supply system for an incinerator. Background Technology

[0002] An incinerator is a device that uses high temperatures to burn waste gas, waste liquid, solid waste materials (such as municipal solid waste, medical waste, industrial hazardous waste, etc.), medical waste, household waste, animal carcasses, etc., in order to reduce or shrink the quantity. At the same time, it can also utilize some of the thermal energy of the incineration medium to achieve energy recovery and utilization.

[0003] In existing incinerators, the primary air system temperature is heated by steam extracted from the turbine stage and saturated steam extracted from the boiler drum, providing air for the drying section, main combustion section, auxiliary combustion section, and burnout section of the incinerator. However, the temperature at the outlet air of the pipes connected to the incinerator is only at one temperature level, which is difficult to meet the requirements of providing separate air temperatures for the drying section, main combustion section, auxiliary combustion section, and burnout section of the incinerator. Therefore, a sealed cooling air supply system for the incinerator is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a sealed cooling air supply system for an incinerator, which can solve the problem that in some existing incinerators, the primary air system temperature is heated by steam extracted from the turbine stage and saturated steam extracted from the boiler drum to provide air for the drying section, main combustion section, auxiliary combustion section, and burnout section of the incinerator. However, the temperature at the outlet air of the pipes connected to the incinerator is only at one temperature level, which is difficult to meet the individual air temperature requirements for the drying section, main combustion section, auxiliary combustion section, and burnout section of the incinerator.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealed cooling air supply system for an incinerator, comprising a furnace body, a drying section, a main combustion section, an auxiliary combustion section, and a burnout section, and further comprising:

[0006] An air guide shell is disposed on the outside of the furnace body;

[0007] The filter screen is disposed on the outer surface of the air guide housing;

[0008] A hot air mechanism is disposed on the outer surface of the air guide shell and is fixedly connected to the drying section, the main combustion section, the auxiliary combustion section and the burnout section.

[0009] A cold air mechanism is installed on the outside of the furnace body and is fixedly connected to a hot air mechanism for adjusting the air temperature at the combustion section.

[0010] A cleaning mechanism is rotatably mounted on the outer surface of the filter screen.

[0011] Preferably, the hot air mechanism includes an air supply pipe one disposed on the outer surface of the air guide shell, a fan body disposed at one end of the air supply pipe one, an air supply pipe two disposed at the output end of the fan body, an air preheater disposed at one end of the air supply pipe two, an air preheater disposed at the output end of the air preheater, two hot air main pipes disposed on the outer surface of the air supply pipe three, and four hot air branch pipes disposed on the outer surface of the hot air main pipes, the hot air branch pipes being fixedly connected to the drying section, main combustion section, auxiliary combustion section and burnout section on the furnace body respectively.

[0012] Preferably, a regulating valve is provided on the outer surface of the main hot air pipe away from the hot air branch pipe.

[0013] Preferably, the cold air mechanism includes a main cold air pipe disposed on the outside of the furnace body, the main cold air pipe being fixedly connected to the second air supply pipe, a cold air branch pipe being disposed at one end of the main cold air pipe, both of the two main hot air pipes being fixedly connected to the cold air branch pipe, the cold air branch pipe being located between the auxiliary combustion section and the burnout section, and two regulating valves being disposed on the outer surface of the cold air branch pipe.

[0014] Preferably, the cleaning mechanism includes a rotating rod rotatably disposed on the outer surface of the filter screen, a fan blade disposed on the outer surface of the rotating rod, the fan blade being located inside the air guide shell, and a cleaning rod disposed on the outer surface of the rotating rod away from the fan blade, the cleaning rod being located outside the filter screen.

[0015] Preferably, the inner wall of the air guide shell is provided with a support frame, and the support frame is in contact with the rotating rod.

[0016] Preferably, the rotating rod, cleaning rod, and support frame are all made of polypropylene plastic.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application achieves independent temperature regulation of the primary air temperature in the combustion section of the furnace body through the setting of a hot air mechanism, a cold air mechanism, and a cleaning mechanism. In use, the hot air mechanism provides the required temperature air source to the drying section, main combustion section, auxiliary combustion section, and combustion section of the furnace body. At the same time, the cold air mechanism guides unheated airflow into the cold air branch pipe in the hot air mechanism below the combustion section to cool the hot air inside the cold air branch pipe. Through the precise control of regulating valve two, the air volume of the cold air can be flexibly adjusted to meet the specific temperature requirements of the combustion section. In addition, the cleaning mechanism can automatically clean the dust particles attached to the outer surface of the filter screen to ensure the ventilation effect of the filter screen. This comprehensive design not only enables independent regulation of the primary air temperature in the combustion section of the furnace body, thereby further improving the thermal efficiency of the boiler, but also effectively cools the slag in the combustion section, making full use of the heat of the slag while reducing the amount of water vapor generated by the slag remover. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is an overall structural view of the present invention;

[0021] Figure 2 This utility model Figure 1 A structural view of the cooling air mechanism in the middle;

[0022] Figure 3 This utility model Figure 1 A structural view of the air guide shell in the middle;

[0023] Figure 4 This utility model Figure 3 The structure view of the cleaning mechanism in the middle.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Furnace body; 2. Drying section; 3. Main combustion section; 4. Auxiliary combustion section; 5. Combustion section; 6. Air guide shell; 7. Hot air mechanism; 71. Air duct one; 72. Fan body; 73. Air duct two; 74. Air preheater; 75. Air duct three; 76. Hot air main pipe; 77. Hot air branch pipe; 8. Cold air mechanism; 81. Cold air main pipe; 82. Cold air branch pipe; 83. Regulating valve two; 9. Cleaning mechanism; 91. Rotating rod; 92. Fan blade; 93. Cleaning rod; 10. Filter screen; 11. Regulating valve one; 12. Support frame. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1 to 4 This utility model provides a technical solution:

[0028] A sealed cooling air supply system for an incinerator includes a furnace body 1, a drying section 2, a main combustion section 3, an auxiliary combustion section 4, and a burnout section 5, and further includes:

[0029] Air guide shell 6 is located on the outside of furnace body 1;

[0030] Filter 10 is disposed on the outer surface of air guide housing 6;

[0031] Hot air mechanism 7 is installed on the outer surface of air guide shell 6 and is fixedly connected to drying section 2, main combustion section 3, auxiliary combustion section 4 and burnout section 5.

[0032] The cold air mechanism 8 is located on the outside of the furnace body 1 and is fixedly connected to the hot air mechanism 7. It is used to adjust the air temperature at the combustion section 5.

[0033] Cleaning mechanism 9 is rotatably mounted on the outer surface of filter screen 10.

[0034] Specifically, such as Figure 1 and Figure 2 As shown, the hot air mechanism 7 includes an air supply pipe 71 disposed on the outer surface of the air guide shell 6. A fan body 72 is disposed at one end of the air supply pipe 71. An air supply pipe 73 is disposed at the output end of the fan body 72. An air preheater 74 is disposed at one end of the air supply pipe 73. An air supply pipe 75 is disposed at the output end of the air preheater 74. Two hot air main pipes 76 are disposed on the outer surface of the air supply pipe 75. Four hot air branch pipes 77 are disposed on the outer surface of the hot air main pipes 76. The hot air branch pipes 77 are fixedly connected to the drying section 2, the main combustion section 3, the auxiliary combustion section 4, and the burnout section 5 on the furnace body 1, respectively.

[0035] Specifically, such as Figure 1 and Figure 2 As shown, a regulating valve 11 is provided on the outer surface of the hot air main pipe 76 away from the hot air branch pipe 77. The hot air volume inside a single hot air main pipe 76 can be adjusted by the regulating valve 11.

[0036] Specifically, such as Figure 1 and Figure 2 As shown, the cold air mechanism 8 includes a cold air main pipe 81 located outside the furnace body 1. The cold air main pipe 81 is fixedly connected to the air supply pipe 73. A cold air branch pipe 82 is provided at one end of the cold air main pipe 81. Two hot air main pipes 76 are fixedly connected to the cold air branch pipe 82. The cold air branch pipe 82 is located between the auxiliary combustion section 4 and the combustion section 5. Two regulating valves 83 are provided on the outer surface of the cold air branch pipe 82.

[0037] Specifically, such as Figure 1 , Figure 3 and Figure 4 As shown, the cleaning mechanism 9 includes a rotating rod 91 rotatably disposed on the outer surface of the filter screen 10, a fan blade 92 disposed on the outer surface of the rotating rod 91, the fan blade 92 being located inside the air guide shell 6, and a cleaning rod 93 disposed on the outer surface of the rotating rod 91 away from the fan blade 92, the cleaning rod 93 being located outside the filter screen 10.

[0038] Specifically, such as Figure 1 , Figure 3 and Figure 4 As shown, a support frame 12 is provided on the inner wall of the air guide shell 6. The support frame 12 is in contact with the rotating rod 91. The rotating rod 91 can rotate inside the support frame 12, thereby improving the rotational stability of the rotating rod 91.

[0039] Specifically, such as Figure 3 and Figure 4 As shown, the rotating rod 91, the cleaning rod 93, and the support frame 12 are all made of polypropylene plastic, which has the characteristics of being lightweight, having high hardness, and being corrosion resistant.

[0040] Working principle: When the system starts, the blower body 72 begins to work, drawing in external airflow and filtering it through the filter screen 10 to remove dust particles. The filtered clean airflow enters the air guide shell 6, and then enters the air preheater 74 through air duct 1 71 and air duct 2 73 for heating. The heated airflow then passes through air duct 3 75, the main hot air pipe 76, and the hot air branch pipe 77, and is sent to the drying section 2, main combustion section 3, auxiliary combustion section 4, and burnout section 5 of the furnace body 1, respectively, providing the required temperature air source for these areas. At the same time, the unheated airflow flowing in air duct 2 73 is guided into the cold air main pipe 8. 1. The airflow is delivered to the cold air branch pipe 82 through the cold air main pipe 81. The unheated airflow discharged through the cold air branch pipe 82 then comes into contact with the hot air inside the hot air branch pipe 77 located below the combustion section 5, cooling it down. The airflow can be precisely adjusted by the setting of the regulating valve 83, thereby meeting the precise requirements of the combustion section 5 for independent air temperature. In addition, the airflow in the system can drive the fan blade 92 to rotate, and the rotation of the fan blade 92 can drive the rotating rod 91 to rotate, causing the cleaning rod 93 to rotate, cleaning the dust particles attached to the surface of the filter screen 10, ensuring the ventilation effect of the filter screen 10.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sealed cooling air supply system for an incinerator, comprising a furnace body (1), a drying section (2), a main combustion section (3), an auxiliary combustion section (4), and a burnout section (5), characterized in that, It also includes: Air guide shell (6), the air guide shell (6) is disposed on the outside of the furnace body (1); A filter screen (10) is disposed on the outer surface of the air guide shell (6); Hot air mechanism (7) is disposed on the outer surface of air guide shell (6) and is fixedly connected to drying section (2), main combustion section (3), auxiliary combustion section (4) and burnout section (5); The cold air mechanism (8) is located on the outside of the furnace body (1) and is fixedly connected to the hot air mechanism (7) for adjusting the air temperature at the combustion section (5). Cleaning mechanism (9) is rotatably disposed on the outer surface of filter screen (10).

2. The sealed cooling air supply system for an incinerator according to claim 1, characterized in that: The hot air mechanism (7) includes an air duct 1 (71) disposed on the outer surface of the air guide shell (6). A fan body (72) is disposed at one end of the air duct 1 (71). An air duct 2 (73) is disposed at the output end of the fan body (72). An air preheater (74) is disposed at one end of the air duct 2 (73). An air duct 3 (75) is disposed at the output end of the air preheater (74). Two hot air main pipes (76) are disposed on the outer surface of the air duct 3 (75). Four hot air branch pipes (77) are disposed on the outer surface of the hot air main pipes (76). The hot air branch pipes (77) are fixedly connected to the drying section (2), main combustion section (3), auxiliary combustion section (4) and burnout section (5) on the furnace body (1), respectively.

3. The sealed cooling air supply system for an incinerator according to claim 2, characterized in that: A regulating valve (11) is provided on the outer surface of the hot air main pipe (76) away from the hot air branch pipe (77).

4. The sealed cooling air supply system for an incinerator according to claim 3, characterized in that: The cold air mechanism (8) includes a cold air main pipe (81) located outside the furnace body (1). The cold air main pipe (81) is fixedly connected to the second air supply pipe (73). A cold air branch pipe (82) is provided at one end of the cold air main pipe (81). Both of the hot air main pipes (76) are fixedly connected to the cold air branch pipe (82). The cold air branch pipe (82) is located between the auxiliary combustion section (4) and the burnout section (5). Two regulating valves (83) are provided on the outer surface of the cold air branch pipe (82).

5. The sealed cooling air supply system for an incinerator according to claim 4, characterized in that: The cleaning mechanism (9) includes a rotating rod (91) rotatably disposed on the outer surface of the filter screen (10). The outer surface of the rotating rod (91) is provided with a fan blade (92), which is located inside the air guide shell (6). A cleaning rod (93) is disposed on the outer surface of the rotating rod (91) away from the fan blade (92), which is located outside the filter screen (10).

6. The sealed cooling air supply system for an incinerator according to claim 5, characterized in that: The inner wall of the air guide shell (6) is provided with a support frame (12), which is in contact with the rotating rod (91).

7. The sealed cooling air supply system for an incinerator according to claim 6, characterized in that: The rotating rod (91), cleaning rod (93) and support frame (12) are all made of polypropylene plastic.

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