Garbage incineration ignition combustion-supporting system

Abstract

The utility model discloses a waste incineration ignition combustion-supporting system which comprises a controller, a fuel gas supply device, a fan and an ignition device, the fuel gas supply device, the fan and the ignition device are all connected with the controller, an outlet of the fuel gas supply device is provided with a fuel gas pipe (2), an outlet of the fan is provided with an air pipe (1), and the waste incineration ignition combustion-supporting system further comprises a mixer. The mixer comprises an outer pipe (3) of which the rear end is connected with the air pipe (1), an inner pipe (4) of which the rear end is connected with the gas pipe (2) is arranged in the outer pipe (3), a cavity (5) is formed between the outer pipe (3) and the inner pipe (4), and a plurality of air holes (6) communicated with the cavity (5) are formed in the side wall of the inner pipe (4); the inner side end of the air hole (6) is located on the front side of the outer side end of the air hole (6), and an included angle ranging from 30 degrees to 60 degrees is formed between the axis of the air hole (6) and the axis of the inner pipe (4). The gas stove has the advantages of being good in combustion-supporting effect and high in gas utilization rate.

Description

Technical Field

[0001] The utility model belongs to the field of waste incinerators, and particularly relates to a waste incineration ignition and combustion-supporting system used on a waste incinerator. Background Art

[0002] At present, the ignition and combustion-supporting system used in the workshop includes a controller, a gas supply device and a blower. The gas supply device and the blower are both controlled by the controller to work. A gas pipe is provided at the outlet of the gas supply device, and an air pipe is provided at the outlet of the blower. The outlets of the gas pipe and the air pipe both extend into the furnace of the waste incinerator. An ignition device is also provided at the outlet of the gas pipe. The outlet of the air pipe is aligned with the outlet of the gas pipe. The ignition device ignites the gas coming out of the gas pipe, and the air pipe outputs air to provide sufficient air for the gas combustion. According to the combustion situation of the waste in the furnace, the controller adjusts the gas supply speed and the air supply speed. For example, when the waste has a high humidity, a larger gas flow rate and air flow rate are required. When the waste incinerator starts to work, the waste in the furnace has not burned yet, and a larger gas flow rate and air flow rate are also required so that the waste can burn as soon as possible, using the heat generated by the combustion of the waste itself to promote the combustion of more waste and improve the incineration efficiency. However, it is found in actual use that due to the counterflow of gas and air, the formed flame posture is stable and cannot continuously heat the fixed position of the waste, so it takes a long time for the waste to reach a temperature above the ignition point. Moreover, the gas and air are not fully mixed. Some gas is impacted by the air and escapes without being ignited, resulting in a low utilization rate of the gas. Content of the Utility Model

[0003] The purpose of the utility model is to provide a waste incineration ignition and combustion-supporting system. The utility model has the advantages of better combustion-supporting effect and higher gas utilization rate.

[0004] The technical solution of the utility model: A waste incineration ignition and combustion-supporting system includes a controller, a gas supply device, a blower and an ignition device. The gas supply device, the blower and the ignition device are all connected to the controller. A gas pipe is provided at the outlet of the gas supply device, and an air pipe is provided at the outlet of the blower. The system further includes a mixer. The mixer includes an outer pipe whose rear end is connected to the air pipe. An inner pipe whose rear end is connected to the gas pipe is arranged inside the outer pipe. A cavity is formed between the outer pipe and the inner pipe. A plurality of air holes communicating with the cavity are provided on the side wall of the inner pipe.

[0005] In the waste incineration ignition and combustion-supporting system described above, the inner end of the air hole is located in front of the outer end of the air hole, and an angle of 30-60° is formed between the axis of the air hole and the axis of the inner pipe.

[0006] In the waste incineration ignition and combustion-supporting system described above, a mixing chamber is provided at the front end of the inner pipe. Steel balls are filled in the mixing chamber. A gas supply pipe is provided at the front side of the mixing chamber. The ignition device is located at the front end of the gas supply pipe.

[0007] In the aforesaid waste incineration ignition and combustion-supporting system, a first mesh sheet is provided at the connection between the mixing bin and the inner pipe, and a second mesh sheet is provided at the connection between the mixing bin and the gas supply pipe. The mesh diameter of the first mesh sheet and the mesh diameter of the second mesh sheet are both smaller than the diameter of the steel balls.

[0008] In the aforesaid waste incineration ignition and combustion-supporting system, the outer edge of the first mesh sheet and the outer edge of the second mesh sheet are both attached to the side wall of the mixing bin, and the middle parts of the first mesh sheet and the second mesh sheet both bulge inward.

[0009] In the aforesaid waste incineration ignition and combustion-supporting system, both the first mesh sheet and the second mesh sheet are made of spring steel.

[0010] In the aforesaid waste incineration ignition and combustion-supporting system, the diameter of the steel balls is 2 - 3 mm.

[0011] In the aforesaid waste incineration ignition and combustion-supporting system, a first switch valve and a check valve are provided on the gas pipe, and a second switch valve is provided on the air pipe.

[0012] Compared with the prior art, the utility model adds a mixer on the basis of the existing ignition and combustion-supporting system. The gas and air are fully mixed in the mixer and then ignited, which can not only make the flame posture stable, continuously aim at the fixed position of the waste for heating, make the waste reach the temperature above the ignition point as soon as possible, and have a better combustion-supporting effect, but also have a higher utilization rate of the gas. Therefore, the utility model has the advantages of better combustion-supporting effect and higher gas utilization rate.

[0013] In addition, by providing a mixing bin and filling a large number of steel balls in the mixing bin, the air flow direction is repeatedly changed by the steel balls, further making the gas and air mix evenly. And the gap between the steel balls is small. When the internal pressure of the air pipe and the gas pipe is small and the phenomenon of backfire in the pipe occurs, when the backfire passes through the gaps between the steel balls, a large amount of heat is absorbed, causing the backfire to go out and improving the safety. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the mixer.

[0015] Figure 2 is a top view schematic diagram of the first mesh sheet.

[0016] The reference signs in the drawings are: 1 - air pipe, 2 - gas pipe, 3 - outer pipe, 4 - inner pipe, 5 - cavity, 6 - air hole, 7 - mixing bin, 8 - steel ball, 9 - gas supply pipe, 10 - first mesh sheet, 11 - second mesh sheet, 12 - first switch valve, 13 - check valve, 14 - second switch valve. Detailed Embodiments

[0017] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments, but it shall not be used as a basis for limiting the present utility model.

[0018] Embodiment. A waste incineration ignition and combustion-supporting system includes a controller, a gas supply device, a blower, and an ignition device. The gas supply device, the blower, and the ignition device are all connected to the controller. A gas pipe 2 is provided at the outlet of the gas supply device, and an air pipe 1 is provided at the outlet of the blower. The controller, the gas supply device, and the blower are all located outside the incinerator. The features are as follows:

[0019] It further includes a mixer. As Figure 1 shown, the mixer includes an outer pipe 3 whose rear end is connected to the air pipe 1. The side wall of the outer pipe 3 is connected to the air pipe 1. An inner pipe 4 whose rear end (air inlet end) is connected to the gas pipe 2 is provided inside the outer pipe 3. A cavity 5 is formed between the outer pipe 3 and the inner pipe 4. A plurality of air holes 6 communicating with the cavity 5 are provided on the side wall of the inner pipe 4. The inner end of the air hole 6 is located in front of the outer end of the air hole 6. An angle of 35° is formed between the axis of the air hole 6 and the axis of the inner pipe 4, so that the air flow direction from the air hole 6 is kept similar to the gas flow direction in the inner pipe 4, avoiding power loss caused by mutual impact.

[0020] A mixing chamber 7 is provided at the front end of the inner pipe 4. The mixing chamber 7 is located outside the incinerator. Steel balls 8 with a diameter of 2.5 mm are filled in the mixing chamber 7. A gas supply pipe 9 is provided on the front side of the mixing chamber 7. The front end of the gas supply pipe 9, that is, the air outlet end, is located inside the incinerator. The ignition device is located at the front end of the gas supply pipe 9. Under further improvement, a gas nozzle that can rotate in all directions is provided at the front end of the gas supply pipe 9 for changing the flame spraying direction.

[0021] A first mesh 10 is provided at the connection between the mixing chamber 7 and the inner pipe 4, and a second mesh 11 is provided at the connection between the mixing chamber 7 and the gas supply pipe 9. The mesh diameter of the first mesh 10 and the mesh diameter of the second mesh 11 are both smaller than the diameter of the steel balls 8, forming an interception of the steel balls 8. Both the first mesh 10 and the second mesh 11 are made of spring steel. All the steel balls 8 are elastically clamped between the first mesh 10 and the second mesh 11, avoiding a large amount of noise generated by the mutual collision of the steel balls 8 under the impact of the air flow. The structures of the first mesh 10 and the second mesh 11 are the same, and they can be welded into a mesh by spring steel wires, and then cut into circular pieces and formed by stamping.

[0022] The outer edge of the first mesh 10 and the outer edge of the second mesh 11 are both attached to the side wall of the mixing chamber 7. The middle parts of the first mesh 10 and the second mesh 11 both bulge inward, showing a spherical shape.

[0023] A first switch valve 12 and a check valve 13 are provided on the gas pipe 2, and a second switch valve 14 is provided on the air pipe 1. Both the first switch valve 12 and the second switch valve 14 are electric valves.

[0024] Working principle: The gas supply device (such as municipal natural gas) supplies gas. The gas enters the inner pipe 4 through the gas pipe 2, and the gas supply speed is controlled by the opening degree of the first switching valve 12. The fan drives air to enter the outer pipe 3 from the air pipe 1, and passes through the air holes 6 into the inner pipe 4, where it is preliminarily mixed with the gas. The air supply speed is controlled by the opening degree of the second switching valve 14. The air and gas are repeatedly redirected by the action of a large number of steel balls 8 in the mixing chamber 7, so as to be evenly mixed, discharged from the gas supply pipe 9, and ignited by the ignition device.

[0025] The opening degrees of the first switching valve 12 and the second switching valve 14 can be set and adjusted through the controller.

Claims

1. A garbage incineration ignition and combustion-supporting system, comprising a controller, a gas supply device, a fan and an ignition device, wherein the gas supply device, the fan and the ignition device are all connected to the controller, a gas pipe (2) is provided at the outlet of the gas supply device, and an air pipe (1) is provided at the outlet of the fan, and the system is characterized in that: The invention also comprises a mixer, the mixer comprising an outer tube (3) whose rear end is connected to an air tube (1), an inner tube (4) whose rear end is connected to a gas tube (2) is arranged inside the outer tube (3), a cavity (5) is formed between the outer tube (3) and the inner tube (4), and a plurality of air holes (6) communicating with the cavity (5) are arranged on the side wall of the inner tube (4).

2. The garbage incineration ignition and combustion-supporting system according to claim 1 is characterized in that: The inner end of the air hole (6) is located in front of the outer end of the air hole (6), and the axis of the air hole (6) and the axis of the inner tube (4) form an angle of 30-60 degrees.

3. The garbage incineration ignition and combustion-supporting system according to claim 1 is characterized in that: A mixing chamber (7) is provided at the front end of the inner tube (4), and steel balls (8) are filled in the mixing chamber (7). An air supply pipe (9) is provided at the front side of the mixing chamber (7), and an ignition device is located at the front end of the air supply pipe (9).

4. The garbage incineration ignition and combustion-supporting system according to claim 3 is characterized in that: A first mesh sheet (10) is provided at the connection between the mixing chamber (7) and the inner tube (4), and a second mesh sheet (11) is provided at the connection between the mixing chamber (7) and the air supply tube (9), wherein the mesh diameter of the first mesh sheet (10) and the mesh diameter of the second mesh sheet (11) are both smaller than the diameter of the steel ball (8).

5. The garbage incineration ignition and combustion-supporting system according to claim 4 is characterized in that: The outer edge of the first mesh sheet (10) and the outer edge of the second mesh sheet (11) are both in contact with the side wall of the mixing bin (7), and the middle part of the first mesh sheet (10) and the middle part of the second mesh sheet (11) are both bulged inwards.

6. The garbage incineration ignition and combustion-supporting system according to claim 4 is characterized in that: The first mesh and the second mesh are both made of spring steel.

7. The garbage incineration ignition and combustion-supporting system according to claim 3 is characterized in that: The diameter of the steel ball (8) is 2-3 mm.

8. The garbage incineration ignition and combustion-supporting system according to claim 1 is characterized in that: The gas pipe (2) is provided with a first switch valve (12) and a one-way valve (13), and the air pipe (1) is provided with a second switch valve (14).

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