Mixing and sealing disc structure for low-nitrogen combustor

Abstract

The utility model relates to the technical field of mixed sealing disc installation, and provides a mixed sealing disc structure for a low-nitrogen combustor, which is applied to a combustor body, a combustion chamber is installed on the combustor body, the mixed sealing disc structure comprises a mixed sealing disc body, the mixed sealing disc body is arranged in the combustion chamber, and the mixed sealing disc structure further comprises an installation groove, a positioning seat and a positioning mechanism. The mounting groove is formed in the side wall of the combustion chamber, the mixing and sealing disc body extends into the mounting groove and is matched with the mounting groove in shape, a plurality of positioning openings are annularly formed in the surface of the mixing and sealing disc body at equal intervals, and a positioning seat is fixedly arranged at the position, located on one side of the positioning openings, of the groove bottom of the mounting groove; the positioning seat penetrates through the positioning opening and is in sliding connection with the side wall of the positioning opening, the positioning mechanism is arranged between the positioning seat and the mixing and sealing disc body and used for fixing the relative position between the mixing and sealing disc body and the positioning seat, and through the technical scheme, the problem that in the prior art, the efficiency of mounting and dismounting between the mixing and sealing disc and a combustion chamber is low is solved.

Description

Technical Field

[0001] This utility model relates to the field of mixing and sealing disc installation technology, specifically to a mixing and sealing disc structure for low-NOx burners. 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. Among them, the mixing disc is an important component of the burner system. Its main function is to regulate and stabilize the air velocity, generate turbulence to fully mix fuel and air, and thus enable full and stable combustion.

[0003] During the use of low-NOx burners, the mixing plate needs to be disassembled and reassembled when maintaining and repairing them. However, since the mixing plate is usually screwed onto the low-NOx burner with multiple sets of bolts, the disassembly and reassembly process is quite cumbersome, which reduces the convenience of maintenance and repair of the low-NOx burner and thus reduces the practicality of the mixing plate. Utility Model Content

[0004] This invention proposes a mixing and sealing disc structure for low-NOx burners, which solves the problem of low installation and disassembly efficiency between the mixing and sealing disc and the combustion chamber in the prior art.

[0005] The technical solution of this utility model is as follows: a mixing and sealing disc structure for a low-NOx burner, applied on the burner body, wherein a combustion chamber is installed on the burner body, including a mixing and sealing disc body, the mixing and sealing disc body is disposed in the combustion chamber, and further includes an installation groove, a positioning seat and a positioning mechanism. The installation groove is opened on the side wall of the combustion chamber, wherein the mixing and sealing disc body extends into the installation groove and the shape of the mixing and sealing disc body is adapted to the installation groove. The surface of the mixing and sealing disc body is provided with a plurality of positioning holes in an annular shape at equal intervals. The bottom of the installation groove is fixedly disposed on one side of the positioning hole, wherein the positioning seat passes through the positioning hole and is slidably connected to the side wall of the positioning hole. The positioning mechanism is disposed between the positioning seat and the mixing and sealing disc body, and is used to fix the relative position between the mixing and sealing disc body and the positioning seat.

[0006] To fix the relative position between the mixing tray body and the positioning seat, the positioning mechanism includes:

[0007] The positioning block has positioning grooves on its two opposite side walls, and the positioning block is slidably disposed in the positioning grooves.

[0008] The positioning block has an inclined surface at the far end of its side wall near the mixing and sealing disc body for abutting against the mixing and sealing disc body.

[0009] A threaded rod is rotatably disposed at the bottom of the positioning groove, and the threaded rod extends into the positioning block through a threaded engagement;

[0010] A reverse rotation mechanism is provided inside the positioning seat to drive the two threaded rods inside the same positioning seat to rotate in opposite directions.

[0011] To drive the two threaded rods within the same positioning seat to rotate in opposite directions, the reverse rotation mechanism includes:

[0012] The first bevel gear is provided in the first cavity between the two positioning slots, and the first bevel gear is rotatably mounted on the side wall of the first cavity near the positioning slot.

[0013] The second bevel gear is rotatably mounted on the side wall of the first cavity, and the second bevel gear meshes with the first bevel gear;

[0014] A synchronous rotation mechanism is disposed on the combustion chamber and is used to drive multiple second bevel gears to rotate synchronously.

[0015] To drive multiple second bevel gears to rotate synchronously, the synchronous rotation mechanism includes:

[0016] A second cavity is formed in the combustion chamber. A first gear is rotatably arranged in the second cavity on one side of the second bevel gear. A connecting rod is fixedly arranged between the first gear and the second bevel gear.

[0017] A first toothed ring is rotatably disposed within the second cavity, and the first toothed ring meshes with the first gear;

[0018] A drive assembly is disposed on the combustion chamber and is used to drive the first gear ring to rotate.

[0019] To drive the first gear ring to rotate, the drive assembly includes:

[0020] The second gear is rotatably disposed within the second cavity and meshes with the first gear ring.

[0021] An internal hex head is rotatably mounted at the bottom of the mounting slot, and a drive rod is fixedly mounted between the internal hex head and the second gear.

[0022] To facilitate the turning of the internal hex head, a drive port is provided on the mixing disc body, and the drive port is aligned with the internal hex head.

[0023] The working principle and beneficial effects of this utility model are as follows:

[0024] 1. In this utility model, by setting up a positioning mechanism, during the process of inserting the mixing disc body into the mounting groove, the positioning between the mixing disc body and the combustion chamber can be achieved through the cooperation of the positioning seat and the positioning port, thereby avoiding misalignment between the mounting groove and the mixing disc body, and also avoiding misalignment between the drive port and the internal hexagon head. At the same time, the operation of the reverse rotation mechanism can drive the positioning block to move, and then the positioning block abuts against the mixing disc body through the movement of the positioning block, and then the installation and fixation between the mixing disc body and the combustion chamber is achieved through the cooperation between the positioning block and the bottom of the mounting groove.

[0025] 2. In this utility model, by setting up a drive mechanism, an electric wrench can be used to turn the internal hex head, and then the second bevel gear is driven to rotate through the transmission of the second gear, the first gear ring and the first gear. At the same time, the meshing of the second bevel gear and the first bevel gear drives the two threaded rods in the same positioning seat to rotate in opposite directions. Then, the threaded engagement between the threaded rod and the positioning block drives the positioning block to adjust its position, thereby facilitating the installation and disassembly of the mixing and sealing disc body by turning the electric wrench in different directions.

[0026] 3. In this utility model, the installation groove, positioning seat and positioning mechanism facilitate the installation and disassembly of the mixing disc body by changing the turning direction of the internal hexagon head, thereby solving the problem of low installation and disassembly efficiency between the mixing disc and the combustion chamber in the prior art. Attached Figure Description

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] Figure 1 This is a schematic diagram of the burner body structure of this utility model;

[0029] Figure 2 This is an exploded structural diagram of the burner body of this utility model;

[0030] Figure 3 This is a schematic diagram of the combustion chamber structure of this utility model;

[0031] Figure 4 This is a schematic cross-sectional view of the combustion chamber of this utility model;

[0032] Figure 5 This is a cross-sectional view of the positioning mechanism of this utility model;

[0033] Figure 6 This utility model Figure 5 A magnified schematic diagram of the partial structure at point A in the middle;

[0034] Figure 7 This is a cross-sectional view of the first toothed ring of this utility model.

[0035] In the diagram: 1. Burner body; 2. Combustion chamber; 3. Mixing disc body; 4. Mounting groove; 5. Positioning seat; 6. Positioning port; 7. Positioning block; 8. Inclined surface; 9. Threaded rod; 10. First bevel gear; 11. First cavity; 12. Second bevel gear; 13. First gear; 14. Connecting rod; 15. First gear ring; 16. Second gear; 17. Internal hexagon head; 18. Drive port. Detailed Implementation

[0036] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0037] like Figures 1-5 As shown, this embodiment proposes a mixing and sealing disc structure for a low-NOx burner, applied to the burner body 1. The burner body 1 is equipped with a combustion chamber 2, including a mixing and sealing disc body 3, which is disposed within the combustion chamber 2. It also includes an installation groove 4, a positioning seat 5, and a positioning mechanism. The installation groove 4 is formed on the side wall of the combustion chamber 2. The mixing and sealing disc body 3 extends into the installation groove 4, and the shape of the mixing and sealing disc body 3 is adapted to the installation groove 4. The surface of the mixing and sealing disc body 3 has multiple positioning holes 6 arranged in a ring at equal intervals. The bottom of the installation groove 4 is fixedly provided with a positioning seat 5 on one side of the positioning hole 6. The positioning seat 5 passes through the positioning hole 6 and is slidably connected to the side wall of the positioning hole 6. The positioning mechanism is disposed between the positioning seat 5 and the mixing and sealing disc body 3 to fix the relative position between the mixing and sealing disc body 3 and the positioning seat 5. During the process of extending the mixing and sealing disc body 3 into the installation groove 4, the positioning between the mixing and sealing disc body 3 and the combustion chamber 2 can be achieved through the cooperation of the positioning seat 5 and the positioning hole 6, thereby avoiding misalignment between the installation groove 4 and the mixing and sealing disc body 3.

[0038] Reference Figures 3-6The positioning mechanism includes a positioning block 7, a threaded rod 9, and a reverse rotation mechanism. Positioning grooves are provided on the two opposite side walls of the positioning seat 5. A positioning block 7 is slidably disposed within each positioning groove. The far end of the side wall of the positioning block 7 closest to the mixing disc body 3 has an inclined surface 8 for abutting against the mixing disc body 3. The threaded rod 9 is rotatably disposed at the bottom of the positioning groove and extends into the positioning block 7 through threaded engagement. The reverse rotation mechanism is disposed within the positioning seat 5 and drives two threaded rods 9 within the same positioning seat 5 to rotate in opposite directions. Specifically, the operation of the reverse rotation mechanism can drive two threaded rods 9 within the same positioning seat 5 to rotate in opposite directions, thereby causing the positioning block 7 to move in the opposite direction through the threaded engagement between the threaded rod 9 and the positioning block 7. This movement of the positioning block 7 causes it to abut against the mixing disc body 3, and the engagement between the positioning block 7 and the bottom of the mounting groove 4 achieves the installation and fixation of the mixing disc body 3 and the combustion chamber 2.

[0039] Reference Figures 4-7 The reverse rotation mechanism includes a first bevel gear 10, a second bevel gear 12, and a synchronous rotation mechanism. A first cavity 11 is formed between two positioning slots in the positioning seat 5. The first bevel gear 10 is rotatably mounted on the side wall of the first cavity 11 near the positioning slots. The second bevel gear 12 is rotatably mounted on the side wall of the first cavity 11 and meshes with the first bevel gear 10. The synchronous rotation mechanism is mounted on the combustion chamber 2 and drives multiple second bevel gears 12 to rotate synchronously. The synchronous rotation mechanism includes a second cavity, a first gear ring 15, and a drive assembly. The second cavity is located inside the combustion chamber 2, and the second bevel gear 12 is located on one side of the second bevel gear. A first gear 13 is rotatably mounted, and a connecting rod 14 is fixedly mounted between the first gear 13 and the second bevel gear 12. A first gear ring 15 is rotatably mounted in the second cavity and meshes with the first gear 13. A drive assembly is mounted on the combustion chamber 2 and is used to drive the first gear ring 15 to rotate. Specifically, the operation of the drive assembly can drive the first gear ring 15 to rotate, and at the same time, the meshing of the first gear ring 15 with the first gear 13 drives the first gear 13 and the second bevel gear 12 to rotate. Furthermore, the meshing of the second bevel gear 12 with the first bevel gear 10 drives the two threaded rods 9 in the same positioning seat 5 to rotate in opposite directions.

[0040] Reference Figures 5-7The drive assembly includes a second gear 16 and an internal hexagon head 17. The second gear 16 is rotatably disposed in the second cavity and meshes with the first gear ring 15. The internal hexagon head 17 is rotatably disposed at the bottom of the mounting groove 4. A drive rod is fixedly disposed between the internal hexagon head 17 and the second gear 16. A drive port 18 is provided on the mixing and sealing disc body 3, and the drive port 18 is aligned with the internal hexagon head 17. Specifically, the operator can use an electric wrench to turn the internal hexagon head 17, thereby driving the first gear ring 15 to rotate through the meshing of the second gear 16 and the first gear ring 15.

[0041] Working principle: During use, when the operator inserts the mixing disc body 3 into the mounting groove 4, the positioning seat 5 and the positioning port 6 can be used to position the mixing disc body 3 and the combustion chamber 2, thereby preventing misalignment between the mounting groove 4 and the mixing disc body 3, and also preventing misalignment between the drive port 18 and the internal hex head 17. The operator can then use an electric wrench to turn the internal hex head 17, which in turn drives the first gear ring 15 to rotate through the meshing of the second gear 16 and the first gear ring 15. Simultaneously, the meshing of the first gear ring 15 and the first gear 13 drives the first gear 13 and the second gear ring 16 to rotate. The second bevel gear 12 rotates, and the meshing of the second bevel gear 12 with the first bevel gear 10 drives the two threaded rods 9 in the same positioning seat 5 to rotate in opposite directions. During the rotation of the threaded rods 9, the threaded engagement between the threaded rods 9 and the positioning block 7 drives the positioning block 7 to move. The movement of the positioning block 7 causes the positioning block 7 to abut against the mixing disc body 3. The engagement between the positioning block 7 and the bottom of the mounting groove 4 achieves the installation and fixation between the mixing disc body 3 and the combustion chamber 2. The mixing disc body 3 can be disassembled by controlling the direction of the electric wrench to turn the internal hexagon head 17 in the opposite direction.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A mixing and sealing disc structure for a low-NOx burner, applied to a burner body (1), wherein a combustion chamber (2) is mounted on the burner body (1), comprising a mixing and sealing disc body (3) disposed within the combustion chamber (2), characterized in that, Also includes: Mounting groove (4) is provided on the side wall of the combustion chamber (2), wherein the mixing disc body (3) extends into the mounting groove (4) and the shape of the mixing disc body (3) is adapted to the mounting groove (4); The positioning seat (5) has multiple positioning holes (6) equidistantly arranged in a ring on the surface of the mixing and sealing disc body (3). The bottom of the mounting groove (4) is fixedly provided with the positioning seat (5) on one side of the positioning hole (6). The positioning seat (5) passes through the positioning hole (6) and is slidably connected to the side wall of the positioning hole (6). The positioning mechanism is located between the positioning seat (5) and the mixing plate body (3).

2. The mixing and sealing disc structure for a low-NOx burner according to claim 1, characterized in that, The positioning mechanism includes: The positioning block (7) has positioning grooves on its two opposite side walls, and the positioning block (7) is slidably disposed in the positioning grooves. The positioning block (7) has a sloping surface (8) at the far end of the side wall near the mixing plate body (3) for abutting against the mixing plate body (3). A threaded rod (9) is rotatably disposed at the bottom of the positioning groove, and the threaded rod (9) extends into the positioning block (7) through threaded engagement; A reverse rotation mechanism is provided inside the positioning seat (5).

3. The mixing disc structure for a low-NOx burner according to claim 2, characterized in that, The reverse rotation mechanism includes: The first bevel gear (10) is located between the two positioning slots and a first cavity (11) is provided. The first bevel gear (10) is rotatably disposed on the side wall of the first cavity (11) near the positioning slot. The second bevel gear (12) is rotatably disposed on the side wall of the first cavity (11), and the second bevel gear (12) meshes with the first bevel gear (10); A synchronous rotation mechanism is provided on the combustion chamber (2).

4. The mixing disc structure for a low-NOx burner according to claim 3, characterized in that, The synchronous rotation mechanism includes: The second cavity is opened in the combustion chamber (2). A first gear (13) is rotatably arranged in the second cavity on one side of the second bevel gear. A connecting rod (14) is fixedly arranged between the first gear (13) and the second bevel gear (12). The first toothed ring (15) is rotatably disposed in the second cavity, and the first toothed ring (15) meshes with the first gear (13); The drive assembly is disposed on the combustion chamber (2).

5. The mixing disc structure for a low-NOx burner according to claim 4, characterized in that, The driving component includes: The second gear (16) is rotatably disposed in the second cavity, and the second gear (16) meshes with the first gear ring (15); An internal hex head (17) is rotatably disposed at the bottom of the mounting slot (4), and a drive rod is fixedly disposed between the internal hex head (17) and the second gear (16).

6. The mixing disc structure for a low-NOx burner according to claim 5, characterized in that, The mixing disk body (3) has a drive port (18) which is aligned with the internal hexagon head (17).

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