Gun fire tube of low-nitrogen combustor

Abstract

The utility model discloses a low-nitrogen burner gun fire tube, which relates to the technical field of low-nitrogen burner gun fire tubes, and comprises a low-nitrogen burner main body, a mounting groove is arranged on the side surface of an air inlet channel of the low-nitrogen burner main body, and an air volume control mechanism is arranged in the mounting groove. By means of the air volume control mechanism, the air volume entering the combustor can be controlled, air can be filtered, when the three air inlet holes are completely aligned, outside air can rapidly enter a mixing cavity of the combustor, and when the first air inlet hole is staggered from the second air inlet hole and the third air inlet hole, the outside air can rapidly enter the mixing cavity of the combustor. By means of the structure, outside air can slowly enter the combustor mixing cavity or even cannot enter the combustor mixing cavity, a worker can rapidly adjust the air inlet amount according to the actual situation, meanwhile, impurities in the air can be prevented from entering the combustor mixing cavity through the efficient filter screen made of the glass fiber filter material, the combustion efficiency is improved, and the service life of the combustor is prolonged. And large smoke dust is prevented from being generated after combustion, and the device is more scientific and efficient.

Description

Technical Field

[0001] This utility model relates to the field of low-NOx burner tube technology, specifically a low-NOx burner tube. Background Technology

[0002] A low-NOx burner is a device that integrates a blower, induced draft fan, frequency converter, control valve, and multiple circuits into a traditional burner, allowing clean energy and burner operation to provide more efficient thermal energy to the boiler. The burner tube serves to guide and stabilize air pressure and is also a component of the air intake passage.

[0003] Most existing low-NOx burner nozzles can guide and stabilize air pressure, but they cannot filter the incoming air. Dust in the air will also enter the mixing chamber of the low-NOx burner. Because the mixed gas contains impurities, it will not only lead to lower combustion efficiency, but also easily produce a lot of smoke after combustion.

[0004] Therefore, a low-NOx burner barrel is proposed. Utility Model Content

[0005] This invention provides a low-NOx burner nozzle that has the advantages of filtering air and being easy to disassemble and replace, thus solving the problem of impurities in the mixed gas due to the inability to filter air.

[0006] To achieve the purpose of filtering air and being easy to disassemble and replace, this utility model provides the following technical solution: a low-NOx burner nozzle, including a low-NOx burner body, wherein an installation groove is provided on the side of the air intake channel of the low-NOx burner body, and an air volume control mechanism is provided inside the installation groove.

[0007] As a preferred technical solution of this utility model, the air volume control mechanism includes a first mounting bracket, a second mounting bracket, an adjustment component, and a limiting component. The first mounting bracket is disposed inside the mounting groove, the second mounting bracket is fixedly mounted on the top of the first mounting bracket, the adjustment component is fixedly mounted inside the first mounting bracket and the second mounting bracket, and the limiting component is disposed on the outer side of the first mounting bracket and the second mounting bracket.

[0008] As a preferred embodiment of this utility model, the adjustment assembly includes a bearing seat, the bearing seat is fixedly installed inside the first mounting bracket and the second mounting bracket, a lead screw is rotatably connected inside the bearing seat, a threaded plate is threadedly connected to the surface of the lead screw, a rotary knob is fixedly installed on the outside of the lead screw, an adjustment plate is welded to the side of the threaded plate, and an air inlet is provided inside the adjustment plate.

[0009] As a preferred technical solution of this utility model, the first mounting bracket is provided with an air inlet hole two inside, and the second mounting bracket is provided with an air inlet hole three inside, and the first air inlet hole is adapted to the second air inlet hole and the third air inlet hole.

[0010] As a preferred embodiment of this utility model, a high-efficiency filter screen is fixedly installed inside the second air inlet, and the high-efficiency filter screen is made of glass fiber filter material.

[0011] As a preferred technical solution of this utility model, the limiting component includes a fixing frame, and the fixing frame is fixedly installed on the outer side of the mounting frame one and the mounting frame two. A connecting groove is opened on the side of the fixing frame, and a connecting plate is welded to the side of the low-NOx burner body. The connecting plate is adapted to the connecting groove.

[0012] As a preferred embodiment of this utility model, a tension spring is fixedly installed inside the fixing frame, a movable plate is fixedly connected to the side of the tension spring, a pressing rod and a locking rod are fixedly installed on the side of the movable plate away from the tension spring, a locking groove is opened on the side of the connecting plate, and the locking rod engages with the locking groove.

[0013] Compared with the prior art, this utility model provides a low-NOx burner tube, which has the following beneficial effects:

[0014] This low-NOx burner nozzle, through its airflow control mechanism, not only controls the amount of air entering the burner but also filters the air. Turning a rotary knob rotates a lead screw; the interaction between the external thread of the lead screw and the internal thread of the threaded plate causes the threaded plate to move back and forth, thus adjusting the position of air inlet one. When air inlet one is fully aligned with air inlets two and three, outside air can quickly enter the burner's mixing chamber. When air inlet one is misaligned with air inlets two and three, outside air can enter slowly or even not enter the mixing chamber at all, allowing operators to quickly adjust the airflow according to actual conditions. Simultaneously, a high-efficiency filter made of glass fiber material prevents impurities in the air from entering the burner's mixing chamber, improving combustion efficiency and preventing excessive smoke and dust after combustion—making it more scientific and efficient. Furthermore, the limiting components facilitate easy disassembly and assembly of the mounting bracket, making maintenance and cleaning of the airflow control mechanism more convenient and faster. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the disassembled airflow control mechanism of this utility model;

[0017] Figure 3 This is an exploded view of the air volume control mechanism of this utility model;

[0018] Figure 4 This is a cross-sectional structural diagram of the fixing frame of this utility model;

[0019] Figure 5 This utility model Figure 3 Enlarged view of point A in the middle.

[0020] In the diagram: 1. Low-NOx burner body; 2. Mounting slot; 3. Air volume control mechanism; 31. Mounting bracket one; 32. Mounting bracket two; 33. Adjustment component; 331. Bearing seat; 332. Lead screw; 333. Threaded plate; 334. Rotary knob; 335. Adjustment plate; 336. Air inlet one; 34. Air inlet two; 35. Air inlet three; 36. High-efficiency filter; 37. Limiting component; 371. Fixing bracket; 372. Connecting slot; 373. Connecting plate; 374. Tension spring; 375. Movable plate; 376. Pressing rod; 377. Locking rod; 378. Locking groove. Detailed Implementation

[0021] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention may exceed the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but they still fall within the protection scope of this application.

[0022] Figures 1-5 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-5 The present invention will be further described below. The present invention discloses a low-NOx burner nozzle, including a low-NOx burner body 1, an installation groove 2 is provided on the side of the air inlet channel of the low-NOx burner body 1, and an air volume control mechanism 3 is provided inside the installation groove 2.

[0023] In this embodiment, by placing the air volume control mechanism 3 into the mounting slot 2, the air volume control mechanism 3 can be placed in the air intake channel of the low-NOx burner body 1, thereby controlling the air volume entering the burner and filtering the air.

[0024] Specifically, the air volume control mechanism 3 includes a first mounting bracket 31, a second mounting bracket 32, an adjustment component 33, and a limiting component 37. The first mounting bracket 31 is installed inside the mounting slot 2. The second mounting bracket 32 ​​is fixedly installed on the top of the first mounting bracket 31. The adjustment component 33 is fixedly installed inside the first mounting bracket 31 and the second mounting bracket 32. The limiting component 37 is provided on the outside of the first mounting bracket 31 and the second mounting bracket 32.

[0025] In this embodiment, the position of the adjusting plate 335 and the air inlet 336 can be adjusted by adjusting component 33, thereby changing the speed at which outside air enters the combustion chamber; the limiting component 37 makes it easier for staff to disassemble and install the mounting bracket, and makes it more convenient and faster for staff to inspect and clean the air volume control mechanism 3.

[0026] Specifically, the adjustment assembly 33 includes a bearing housing 331. The bearing housing 331 is fixedly installed inside the mounting bracket 31 and the mounting bracket 32. The bearing housing 331 is rotatably connected to the inside of the bearing housing 331. The surface of the lead screw 332 is threadedly connected to a threaded plate 333. A rotary knob 334 is fixedly installed on the outside of the lead screw 332. An adjustment plate 335 is welded to the side of the threaded plate 333. An air inlet 336 is opened inside the adjustment plate 335.

[0027] In this embodiment, rotating the rotary knob 334 can drive the lead screw 332 to rotate. Under the interaction of the external thread of the lead screw 332 and the internal thread of the threaded plate 333, the threaded plate 333 can drive the adjusting plate 335 to move back and forth, thereby adjusting the position of the air inlet 336.

[0028] Specifically, the mounting bracket 31 has an air inlet 34 inside, and the mounting bracket 32 ​​has an air inlet 35 inside. The air inlet 336 is compatible with the air inlet 34 and the air inlet 35.

[0029] In this embodiment, by adjusting the position of the first air inlet 336, the first air inlet 336 can be aligned with or offset from the second air inlet 34 and the third air inlet 35, thereby changing the speed at which outside air enters the combustion chamber.

[0030] Specifically, a high-efficiency filter 36 is fixedly installed inside the second air intake 34. The high-efficiency filter 36 is made of glass fiber filter material.

[0031] In this embodiment, the high-efficiency filter 36 made of glass fiber filter material can block impurities in the air and prevent impurities in the air from entering the mixing chamber of the burner along with the air.

[0032] Specifically, the limiting component 37 includes a fixing frame 371. The fixing frame 371 is fixedly installed on the outside of the mounting frame 1 31 and the mounting frame 2 32. A connecting groove 372 is opened on the side of the fixing frame 371. A connecting plate 373 is welded to the side of the low-NOx burner body 1. The connecting plate 373 is adapted to the connecting groove 372.

[0033] In this embodiment, by aligning the connecting groove 372 of the fixing bracket 371 with the connecting plate 373, the fixing bracket 371 can be placed on the side of the low-NOx burner body 1, thereby placing the air volume control mechanism 3 on the side of the low-NOx burner body 1.

[0034] Specifically, a tension spring 374 is fixedly installed inside the fixed frame 371. A movable plate 375 is fixedly connected to the side of the tension spring 374. A pressing rod 376 and a locking rod 377 are fixedly installed on the side of the movable plate 375 away from the tension spring 374. A locking groove 378 is opened on the side of the connecting plate 373, and the locking rod 377 is engaged with the locking groove 378.

[0035] In this embodiment, when the movable plate 375 and the pressing rod 376 are not subjected to external force, the movable plate 375 and the locking rod 377 will move outward under the elastic force of the tension spring 374, so that the locking rod 377 can be locked in the slot 378 of the connecting plate 373, thereby fixing the fixing frame 371 and the air volume control mechanism 3.

[0036] The working principle and usage of this utility model are as follows: During use, the high-efficiency filter screen 36 made of glass fiber filter material can block impurities in the air, preventing them from entering the mixing chamber of the burner along with the air. This not only improves combustion efficiency but also avoids the generation of large amounts of smoke and dust after combustion, making it more scientific and efficient. When it is necessary to adjust the airflow into the burner, the operator rotates the rotary knob 334, which drives the lead screw 332 to rotate, causing the threaded plate 333 to move the adjusting plate 335 back and forth, thereby adjusting the air inlet. Positioning the air inlet 336 allows it to be aligned with or offset from air inlets 34 and 35. When air inlet 336 is fully aligned with air inlets 34 and 35, outside air can quickly enter the burner mixing chamber. When air inlet 336 is offset from air inlets 34 and 35, outside air can enter slowly or not at all, allowing operators to quickly adjust the air intake according to actual conditions. This system requires no electricity and is easy to adjust. Conveniently, when cleaning the high-efficiency filter 36 or repairing the adjustment component 33 is required, the operator first presses the pressing lever 376 inward, causing the movable plate 375 and the locking lever 377 to move inward. The locking lever 377 will then disengage from the locking groove 378 of the connecting plate 373. At this point, the operator can pull out the mounting bracket to remove the airflow control mechanism 3 for cleaning or repair. After cleaning or repairing the airflow control mechanism 3, the mounting bracket is placed into the mounting slot 2, and the connecting groove 372 of the fixing bracket 371 will align. With the connecting plate 373 in place, the fixing bracket 371 can be placed on the side of the low-NOx burner body 1, thereby placing the air volume control mechanism 3 on the side of the low-NOx burner body 1. Releasing the pressing rod 376 will cause the movable plate 375 and the locking rod 377 to move outward under the elastic force of the tension spring 374, so that the locking rod 377 can be engaged in the slot 378 of the connecting plate 373, thereby fixing the fixing bracket 371 and the air volume control mechanism 3. This makes it more convenient and faster for staff to inspect and clean the air volume control mechanism 3.

[0037] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A low-NOx burner nozzle, comprising a low-NOx burner body (1), characterized in that: The low-NOx burner body (1) has an installation groove (2) on the side of the air intake channel, and an air volume control mechanism (3) is provided inside the installation groove (2). The air volume control mechanism (3) includes a first mounting bracket (31), a second mounting bracket (32), an adjustment component (33), and a limiting component (37). The first mounting bracket (31) is provided inside the mounting slot (2). The second mounting bracket (32) is fixedly installed on the top of the first mounting bracket (31). The adjustment component (33) is fixedly installed inside the first mounting bracket (31) and the second mounting bracket (32). The limiting component (37) is provided on the outside of the first mounting bracket (31) and the second mounting bracket (32).

2. The low-NOx burner tube according to claim 1, characterized in that: The adjustment assembly (33) includes a bearing seat (331). The bearing seat (331) is fixedly installed inside the first mounting bracket (31) and the second mounting bracket (32). A lead screw (332) is rotatably connected inside the bearing seat (331). A threaded plate (333) is threadedly connected to the surface of the lead screw (332). A rotary knob (334) is fixedly installed on the outside of the lead screw (332). An adjustment plate (335) is welded to the side of the threaded plate (333). An air inlet hole (336) is opened inside the adjustment plate (335).

3. The low-NOx burner tube according to claim 2, characterized in that: The mounting bracket 1 (31) has an air inlet 2 (34) inside, and the mounting bracket 2 (32) has an air inlet 3 (35) inside. The air inlet 1 (336) is adapted to the air inlet 2 (34) and the air inlet 3 (35).

4. A low-NOx burner barrel according to claim 3, characterized in that: A high-efficiency filter (36) is fixedly installed inside the second air inlet (34), and the high-efficiency filter (36) is made of glass fiber filter material.

5. A low-NOx burner tube according to claim 1, characterized in that: The limiting component (37) includes a fixing frame (371). The fixing frame (371) is fixedly installed on the outer side of the mounting frame one (31) and the mounting frame two (32). A connecting groove (372) is opened on the side of the fixing frame (371). A connecting plate (373) is welded to the side of the low-NOx burner body (1). The connecting plate (373) is adapted to the connecting groove (372).

6. A low-NOx burner tube according to claim 5, characterized in that: A tension spring (374) is fixedly installed inside the fixed frame (371). A movable plate (375) is fixedly connected to the side of the tension spring (374). A pressing rod (376) and a locking rod (377) are fixedly installed on the side of the movable plate (375) away from the tension spring (374). A locking groove (378) is opened on the side of the connecting plate (373). The locking rod (377) is engaged with the locking groove (378).

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