Adjustable plasma torch waste gas combustion device

Abstract

The utility model discloses an adjustable plasma torch waste gas combustion device which comprises a combustion furnace, a gas inlet pipe and a gas outlet pipe are arranged at the two ends of the combustion furnace respectively, a gas supplementing pipe is arranged at the upper end of the combustion furnace, a plurality of plasma torch bodies are arranged on the combustion furnace, a heat exchange pipe is arranged in the combustion furnace, and the two ends of the heat exchange pipe extend out of the combustion furnace. A cleaning box is arranged at the upper end of the combustion furnace, a water spraying pipe is fixedly arranged in the cleaning box, two limiting shells are fixedly arranged in the combustion furnace, lifting plates are movably arranged in the limiting shells, two electric push rods are fixedly arranged at the lower end of the combustion furnace, the upper end of each electric push rod extends into the corresponding limiting shell and is fixedly connected with the corresponding lifting plate, and a blow-off pipe is fixedly arranged at the lower end of the combustion furnace. According to the waste gas recycling device, heat generated after waste gas combustion can be recycled, meanwhile, water can be regularly sprayed to clean the heat exchange pipe, and therefore the heat exchange effect of the heat exchange pipe is guaranteed, the heat utilization sufficiency is improved, and resources are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas combustion, and more specifically, to an adjustable plasma torch waste gas combustion device. Background Art

[0002] Semiconductor waste gas is mostly toxic and harmful, which is seriously harmful to human body and environment. The plasma torch discharges between cathode and anode. The working gas flows through the discharge area and is ionized under the action of strong current to form plasma. The plasma is ejected from the flame mouth under the impetus of the working gas to form an ultra-high temperature jet flame. The ultra-high temperature of the plasma flame is used to provide heat energy for the waste gas to be treated and the related reaction gas, and the organic matter or halide in the waste gas is converted into inorganic small molecules such as carbon dioxide and water. The plasma torch waste gas combustion device utilizes the flame generated by the plasma torch to burn the waste gas. During the use of the existing plasma torch waste gas combustion device, the gas generated after the waste gas combustion treatment contains a large amount of heat. In order to recycle the heat, a heat exchange tube is usually provided. After a long period of use, a large amount of impurity particles and other substances will adhere to the outer wall of the heat exchange tube, thereby reducing the heat exchange effect of the heat exchange tube and wasting the heat generated by the combustion device; secondly, during the use of the existing plasma torch waste gas combustion device, an air inlet pipe is provided on one side of the combustion furnace for the entry of waste gas, and the amount of waste gas entering the combustion furnace is usually not adjustable. When the waste gas flow is too large, the waste gas will burn too violently in the combustion furnace and generate a high temperature, which will not only produce a large amount of harmful gases, but also may damage the plasma torch. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the problems existing in the prior art, the utility model provides an adjustable plasma torch exhaust gas combustion device to solve the thermal technical problem mentioned in the background technology that during the use of the existing plasma torch exhaust gas combustion device, a large amount of impurity particles and other substances will adhere to the outer wall of the heat exchange tube after long-term use, thereby reducing the heat exchange effect of the heat exchange tube.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustable plasma torch waste gas combustion device, comprising a combustion furnace, wherein both ends of the combustion furnace are respectively provided with an air inlet pipe and an air outlet pipe, an upper end of the combustion furnace is provided with an air supply pipe, a plurality of plasma torch bodies are provided on the combustion furnace, a heat exchange tube is provided in the combustion furnace, both ends of the heat exchange tube extend into the outside of the combustion furnace, a cleaning box is provided at the upper end of the combustion furnace, a water spray pipe is fixedly provided in the cleaning box, two limit shells are fixedly provided in the combustion furnace, a lifting plate is movably provided in the limit shell, two electric push rods are fixedly provided at the lower end of the combustion furnace, the upper end of each of the electric push rods extends into the limit shell and is fixedly connected to the lifting plate, and a sewage pipe is fixedly provided at the lower end of the combustion furnace;

[0007] A fixing ring is fixedly provided on the air intake pipe, a first adjusting plate is fixedly provided inside the fixing ring, a second adjusting plate is rotatably provided inside the fixing ring, and a plurality of matching adjusting holes are respectively provided on the first adjusting plate and the second adjusting plate.

[0008] The utility model is further configured that an annular driving chamber is provided in the fixing ring to facilitate driving the second adjusting plate.

[0009] The utility model is further configured that a first motor is fixedly provided on the fixing ring, and a rotating rod is fixedly connected to a driving end of the first motor to facilitate the rotation of the rotating rod.

[0010] The utility model is further configured that the lower end of the rotating rod extends into the driving chamber and is fixedly connected with a bevel gear to facilitate the rotation of the bevel gear.

[0011] The utility model is further configured that the outer side of the second adjustment plate extends into the driving chamber and is fixedly connected to a conical gear ring meshing with the conical gear, so as to facilitate the rotation of the second adjustment plate.

[0012] The utility model is further configured that two rotating shafts are rotatably arranged in the combustion furnace, and a cover body is fixedly arranged on each of the rotating shafts to facilitate the rotation of the cover body.

[0013] The utility model is further configured that one end of the two rotating shafts passes through the cleaning box and the combustion furnace and is fixedly connected with a rotating gear to facilitate the rotation of the rotating shafts.

[0014] The utility model is further configured such that the rotating gear is meshingly connected with a driving gear, and the driving gear is fixedly connected with a second motor fixedly arranged on the outside of the combustion furnace to facilitate the rotation of the rotating gear.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides an adjustable plasma torch exhaust gas combustion device, which has the following beneficial effects:

[0017] 1. Through the coordination of the combustion furnace, air inlet pipe, air outlet pipe, air supply pipe, plasma torch body, heat exchange tube, cleaning box, water spray pipe, limit shell, lifting plate, electric push rod and sewage pipe, the heat generated after the exhaust gas combustion can be recovered while the heat exchange tube can be regularly sprayed with water for cleaning, thereby ensuring the heat exchange effect of the heat exchange tube, improving the fullness of heat utilization and saving resources.

[0018] 2. By cooperating with the fixing ring, the first adjusting plate, the second adjusting plate, the adjusting hole, the driving chamber, the first motor, the rotating rod, the bevel gear and the bevel gear ring, the intake amount of the exhaust gas can be adjusted by adjusting the overlap of the adjusting holes on the first adjusting plate and the second adjusting plate, thereby avoiding excessive combustion of the exhaust gas in the combustion furnace, reducing the generation of harmful gases, and extending the service life of the plasma torch body.

[0019] 3. The cover can be automatically opened and closed by cooperating with the rotating shaft, the cover, the rotating gear, the driving gear and the second motor, so that the water spray pipe can be covered when it is not needed, thereby preventing smoke and dust from clogging the nozzle on the water spray pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of an adjustable plasma torch waste gas combustion device in use;

[0021] Figure 2 for Figure 1 A is a partial enlarged schematic diagram;

[0022] Figure 3 It is a schematic diagram of the partial cross-sectional structure of the combustion furnace and its connecting parts when the lifting plate is in a moving state;

[0023] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the fixing ring and its connecting parts in the adjustment state of the second adjustment plate;

[0024] Figure 5 It is a schematic diagram of the partial cross-sectional structure of the combustion furnace and its connecting parts when the cover is closed.

[0025] In the figure: 1. combustion furnace; 2. air inlet pipe; 3. air outlet pipe; 4. air supply pipe; 5. plasma torch body; 6. heat exchange pipe; 7. cleaning box; 8. water spray pipe; 9. limit shell; 10. lifting plate; 11. electric push rod; 12. sewage pipe; 13. fixing ring; 14. first adjustment plate; 15. second adjustment plate; 16. adjustment hole; 17. drive chamber; 18. first motor; 19. rotating rod; 20. bevel gear; 21. bevel gear ring; 22. rotating shaft; 23. cover body; 24. rotating gear; 25. driving gear; 26. second motor. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0028] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0029] See also Figure 1-5 , an adjustable plasma torch waste gas combustion device, comprising a combustion furnace 1, wherein both ends of the combustion furnace 1 are respectively provided with an air inlet pipe 2 and an air outlet pipe 3, an upper end of the combustion furnace 1 is provided with an air supply pipe 4, a plurality of plasma torch bodies 5 are provided on the combustion furnace 1, a heat exchange pipe 6 is provided in the combustion furnace 1, both ends of the heat exchange pipe 6 extend into the outside of the combustion furnace 1, a cleaning box 7 is provided at the upper end of the combustion furnace 1, a water spray pipe 8 is fixedly provided in the cleaning box 7, two limit shells 9 are fixedly provided in the combustion furnace 1, a lifting plate 10 is movably provided in the limit shell 9, two electric push rods 11 are fixedly provided at the lower end of the combustion furnace 1, the upper end of each of the electric push rods 11 extends into the limit shell 9 and is fixedly connected to the lifting plate 10, and a sewage pipe 12 is fixedly provided at the lower end of the combustion furnace 1;

[0030] A fixing ring 13 is fixedly disposed on the air intake pipe 2 , a first adjusting plate 14 is fixedly disposed inside the fixing ring 13 , a second adjusting plate 15 is rotatably disposed inside the fixing ring 13 , and a plurality of matching adjusting holes 16 are respectively disposed on the first adjusting plate 14 and the second adjusting plate 15 .

[0031] In this embodiment, during the use of the entire waste gas combustion device, the waste gas enters the combustion furnace 1 from the air inlet pipe 2, the air supply pipe 4 transports air to the combustion furnace 1 to provide oxygen for the combustion of the waste gas, the plasma torch body 5 is started, the plasma torch body 5 generates a flame to burn the waste gas, and the burned gas is discharged from the outlet pipe 3 along the combustion furnace 1. One end of the outlet pipe 3 will be connected to the subsequent waste gas treatment equipment for subsequent filtering and dust removal. The burned gas will contain a large amount of heat, and the heat exchange pipe 6 is provided with a circulating cold water , the heat in the gas can be absorbed through the heat exchange tube 6. After long-term use, the exhaust gas combustion is stopped and the electric push rod 11 is started. The electric push rod 11 drives the lifting plate 10 to move out of the limiting shell 9, thereby separating the interior of the combustion furnace 1 on both sides of the heat exchange tube 6. One end of the water spray pipe 8 is connected to an external water source. A plurality of nozzles are arranged at the lower end of the water spray pipe 8. High-pressure clean water enters the water spray pipe 8 and then is sprayed out from the plurality of nozzles to spray and clean the heat exchange tube 6. The sewage pipe 12 is opened, and the cleaned sewage is discharged from the sewage pipe 12.

[0032] More specifically, water can be sprayed through the water spray pipe 8 to clean the outside of the heat exchange tube 6. The second adjustment plate 15 can be rotated, and the amount of exhaust gas entering can be controlled by adjusting the overlap of the adjustment holes 16 on the first adjustment plate 14 and the second adjustment plate 15.

[0033] See also Figure 1-5 As an implementation method for rotating the second adjustment plate 15: an annular driving chamber 17 is provided in the fixing ring 13, a first motor 18 is fixedly provided on the fixing ring 13, a rotating rod 19 is fixedly connected to the driving end of the first motor 18, the lower end of the rotating rod 19 extends into the driving chamber 17 and is fixedly connected to a bevel gear 20, and the outer side of the second adjustment plate 15 extends into the driving chamber 17 and is fixedly connected to a bevel gear ring 21 meshing with the bevel gear 20.

[0034] Specifically, the first motor 18 is started, the first motor 18 drives the rotating rod 19 to rotate, the rotating rod 19 drives the bevel gear 20 to rotate, the bevel gear 20 drives the bevel gear ring 21 to rotate in the driving chamber 17, and the bevel gear ring 21 drives the second adjustment plate 15 to rotate.

[0035] See also Figure 1-5 As an implementation method for opening the cover body 23: two rotating shafts 22 are rotatably provided in the combustion furnace 1, and a cover body 23 is fixedly provided on each of the rotating shafts 22. One end of the two rotating shafts 22 passes through the cleaning box 7 and is fixedly connected to the combustion furnace 1 with a rotating gear 24. The rotating gear 24 is meshedly connected with a driving gear 25, and the driving gear 25 is fixedly connected with a second motor 26 fixedly provided on the outside of the combustion furnace 1.

[0036] Specifically, when it is necessary to open the cleaning box 7 so that the cleaning box 7 is connected to the combustion furnace 1, the second motor 26 is started, and the second motor 26 drives the driving gear 25 to rotate, and the driving gear 25 drives one of the rotating gears 24 to rotate. Since the two rotating gears 24 are meshed and connected, the two rotating gears 24 rotate in opposite directions at the same time, and the rotating gear 24 drives the rotating shaft 22 to rotate, and the rotating shaft 22 drives the cover body 23 to rotate, thereby opening the two cover bodies 23. When the water spray pipe 8 is not needed, the opposite operation can be used to close the cover body 23 to prevent smoke and dust from adhering to the nozzle and clogging the nozzle.

[0037] In summary, when the overall equipment is in use:

[0038] When the exhaust gas intake volume of the intake pipe 2 needs to be adjusted, the first motor 18 is started, the first motor 18 drives the rotating rod 19 to rotate, the rotating rod 19 drives the bevel gear 20 to rotate, the bevel gear 20 drives the bevel gear ring 21 to rotate in the driving chamber 17, and the bevel gear ring 21 drives the second adjustment plate 15 to rotate, and the intake volume of the exhaust gas is controlled by adjusting the overlap size of the adjustment holes 16 on the first adjustment plate 14 and the second adjustment plate 15. The exhaust gas enters the combustion furnace 1 from the intake pipe 2, and the air supply pipe 4 transports air to the combustion furnace 1 to provide oxygen for the combustion of the exhaust gas. The plasma torch body 5 is started, and the plasma torch body 5 generates flames to burn the exhaust gas. The burned gas is discharged from the outlet pipe 3 along the combustion furnace 1. One end of the outlet pipe 3 will be connected to the subsequent exhaust gas treatment equipment for subsequent filtering and dust removal. The heat exchange pipe 6 is provided with circulating cold water, and the heat in the gas can be absorbed through the heat exchange pipe 6.

[0039] When it is necessary to open the cover 23, start the second motor 26, the second motor 26 drives the driving gear 25 to rotate, and the driving gear 25 drives one of the rotating gears 24 to rotate. Since the two rotating gears 24 are meshed and connected, the two rotating gears 24 rotate in opposite directions at the same time, the rotating gear 24 drives the rotating shaft 22 to rotate, and the rotating shaft 22 drives the cover 23 to rotate, thereby opening the two cover bodies 23. When the water spray pipe 8 is not needed, the opposite operation can be used to close the cover body 23 to prevent smoke and dust from adhering to the nozzle and clogging the nozzle.

[0040] When the heat exchange tube 6 needs to be sprayed with water for cleaning, the exhaust gas combustion is stopped and the electric push rod 11 is started. The electric push rod 11 drives the lifting plate 10 to move out of the limiting shell 9, thereby separating the interior of the combustion furnace 1 on both sides of the heat exchange tube 6. One end of the water spray pipe 8 is connected to an external water source. A plurality of nozzles are provided at the lower end of the water spray pipe 8. High-pressure clean water enters the water spray pipe 8 and is then sprayed from the plurality of nozzles to spray the heat exchange tube 6 for cleaning. The drain pipe 12 is opened, and the cleaned sewage is discharged from the drain pipe 12.

[0041] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. An adjustable plasma torch waste gas combustion device, comprising a combustion furnace (1), wherein the combustion furnace (1) is provided with an air inlet pipe (2) and an air outlet pipe (3) at both ends, an air supply pipe (4) is provided at the upper end of the combustion furnace (1), and a plurality of plasma torch bodies (5) are provided on the combustion furnace (1), wherein: The combustion furnace (1) is provided with a heat exchange tube (6), both ends of which extend into the outside of the combustion furnace (1); the upper end of the combustion furnace (1) is provided with a cleaning box (7), a water spray pipe (8) is fixedly provided in the cleaning box (7); two limit shells (9) are fixedly provided in the combustion furnace (1), a lifting plate (10) is movably provided in the limit shells (9); two electric push rods (11) are fixedly provided at the lower end of the combustion furnace (1), the upper end of each electric push rod (11) extends into the limit shell (9) and is fixedly connected to the lifting plate (10); and a sewage discharge pipe (12) is fixedly provided at the lower end of the combustion furnace (1); A fixing ring (13) is fixedly provided on the air intake pipe (2), a first adjustment plate (14) is fixedly provided inside the fixing ring (13), a second adjustment plate (15) is rotatably provided inside the fixing ring (13), and a plurality of matching adjustment holes (16) are respectively provided on the first adjustment plate (14) and the second adjustment plate (15).

2. The adjustable plasma torch exhaust gas combustion device according to claim 1 is characterized in that: An annular driving chamber (17) is arranged inside the fixing ring (13).

3. The adjustable plasma torch exhaust gas combustion device according to claim 2 is characterized in that: A first motor (18) is fixedly arranged on the fixing ring (13), and a driving end of the first motor (18) is fixedly connected to a rotating rod (19).

4. The adjustable plasma torch exhaust gas combustion device according to claim 3 is characterized in that: The lower end of the rotating rod (19) extends into the driving chamber (17) and is fixedly connected with a bevel gear (20).

5. The adjustable plasma torch exhaust gas combustion device according to claim 4 is characterized in that: The outer side of the second adjustment plate (15) extends into the driving chamber (17) and is fixedly connected to a conical gear ring (21) meshing with the conical gear (20).

6. An adjustable plasma torch waste gas combustion device according to any one of claims 1 or 2, characterized in that: Two rotating shafts (22) are rotatably arranged in the combustion furnace (1), and a cover body (23) is fixedly arranged on each of the rotating shafts (22).

7. The adjustable plasma torch waste gas combustion device according to claim 6 is characterized in that: One end of the two rotating shafts (22) passes through the cleaning box (7) and the combustion furnace (1) and is fixedly connected to a rotating gear (24).

8. The adjustable plasma torch waste gas combustion device according to claim 7 is characterized in that: The rotating gear (24) is meshedly connected with a driving gear (25), and the driving gear (25) is fixedly connected with a second motor (26) fixedly arranged outside the combustion furnace (1).

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