Burner air door control tool and burner unit

Abstract

The utility model belongs to the technical field of cracking furnaces, and discloses a combustor air door control tool and a combustor unit, the combustor air door control tool comprises a transmission shaft and at least two transmission assemblies, and the at least two transmission assemblies are configured to be in one-to-one correspondence with at least two combustors; each transmission assembly comprises a first connecting arm, a connecting rod and a second connecting arm, the first connecting arm is used for being fixedly connected with the air door rotating shafts, the two ends of the connecting rod are rotationally connected with the first connecting arm and the second connecting arm respectively, the transmission shaft is fixedly connected with the second connecting arm, and the axes of the at least two air door rotating shafts are parallel to the axis of the transmission shaft. The transmission shaft can rotate around the axis of the transmission shaft, the transmission shaft can drive the air door rotating shaft to rotate around the axis of the transmission shaft through the second connecting arm, the connecting rod and the first connecting arm, and the combustor air door control tool achieves the effect of uniformly adjusting the opening degree of at least two combustor air doors.

Description

Technical Field

[0001] The utility model relates to the technical field of cracking furnaces, in particular to a burner air door control tooling and a burner unit. Background Art

[0002] There are many cracking furnace burners, and usually multiple cracking furnace burners are arranged at intervals in the same direction. When the system is running, it is necessary to adjust the air door opening of the cracking furnace burner according to the operating conditions to adjust the air intake of the cracking furnace burner.

[0003] At present, multiple cracking furnace burners need to manually adjust the air damper opening one by one, which has high manual operation costs, low efficiency, and the possibility of missed adjustments.

[0004] Therefore, it is urgent to propose a burner damper control tooling and a burner unit to solve the above technical problems. Utility Model Content

[0005] The first object of the utility model is to provide a burner damper control tool, which achieves the effect of uniformly adjusting the opening of at least two burner dampers.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The burner damper control tool is used to control the opening of the dampers of at least two burners, at least two burners are arranged at intervals along a first direction, each damper is provided with a damper shaft, and the burner damper control tool comprises:

[0008] At least two transmission assemblies, the at least two transmission assemblies are configured to correspond to the at least two burners one by one, each transmission assembly includes a first connecting arm, a connecting rod and a second connecting arm, the first connecting arm is used to be fixedly connected to the damper shaft, and the two ends of the connecting rod are respectively rotatably connected to the first connecting arm and the second connecting arm;

[0009] The transmission shaft is fixedly connected to the second connecting arm, the axes of at least two damper shafts are parallel to the axis of the transmission shaft, the transmission shaft can rotate around its own axis, and the transmission shaft can drive the damper shaft to rotate around its own axis through the second connecting arm, the connecting rod and the first connecting arm.

[0010] Optionally, the burner damper control tooling also includes a drive assembly, the drive assembly includes a third connecting arm and a drive mechanism, the third connecting arm is fixedly connected to the transmission shaft, and the third connecting arm is transmission-connected to the drive mechanism, and the drive mechanism is used to drive the third connecting arm to rotate around the axis of the transmission shaft.

[0011] Optionally, the drive assembly also includes a transmission rod, the axis of the transmission rod is perpendicular to the axis of the transmission shaft, one end of the transmission rod is rotatably connected to the third connecting arm, and the other end of the transmission rod is connected to the driving end of the driving mechanism, and the driving mechanism is used to drive the transmission rod to reciprocate linearly along its axial direction.

[0012] Optionally, one of the other end of the transmission rod and the driving end of the driving mechanism is provided with a first external thread, and the other is provided with a first threaded hole, and the first external thread is threadably matched with the first threaded hole.

[0013] Optionally, the transmission rod includes a first transmission rod and a second transmission rod, the axes of the first transmission rod and the second transmission rod are both perpendicular to the axis of the transmission shaft, one end of the first transmission rod is rotatably connected to the third connecting arm, one end of the second transmission rod is connected to the driving end of the driving mechanism, and the other end of the first transmission rod is rotatably connected to the other end of the second transmission rod.

[0014] Optionally, the transmission rod also includes a first connecting member, the other end of the second transmission rod is rotatably connected to the first connecting member, the other end of the first transmission rod and one of the first connecting member are provided with a second external thread, and the other is provided with a second threaded hole, and the second external thread is threadedly matched with the second threaded hole.

[0015] Optionally, the burner damper control tooling further includes a bearing seat and a rolling bearing, wherein the rolling bearing is mounted on the bearing seat, and the rolling bearing sleeve is mounted on the transmission shaft.

[0016] Optionally, the connecting rod is a telescopic rod.

[0017] Optionally, the connecting rod includes a tube body, a first connecting rod and a second connecting rod, the two ends of the tube body are respectively fixed with a first nut and a second nut, the first connecting rod and the second connecting rod are both provided with a third external thread, the first connecting rod is inserted at one end of the tube body and cooperates with the first nut thread, and the second connecting rod is inserted at the other end of the tube body and cooperates with the second nut thread.

[0018] A second object of the present invention is to provide a burner unit having high production efficiency and operation stability and low operating cost.

[0019] To achieve this purpose, the utility model adopts the following technical solutions:

[0020] A burner unit includes a burner group and the above-mentioned burner damper control tooling, the burner group includes at least two burners, at least two burners are arranged at intervals along a first direction, at least two burners correspond one-to-one to at least two transmission assemblies, a damper shaft is provided on the damper of each burner, the axes of at least two damper shafts are parallel to the axis of the transmission shaft, and each first connecting arm is connected to a corresponding damper shaft.

[0021] Beneficial effects of the utility model:

[0022] The burner damper control tool provided by the utility model is provided with a transmission shaft and a transmission assembly. When the transmission shaft rotates around its own axis, the second connecting arm rotates around the axis of the transmission shaft together with the transmission shaft, and the second connecting arm drives the connecting rod to swing. When the connecting rod swings, it drives the first connecting arm to rotate around the axis of the damper rotating shaft, and then drives the damper rotating shaft to rotate around its own axis to achieve the adjustment of the damper opening. The burner damper control tool is provided with at least two transmission assemblies, and the at least two transmission assemblies correspond to the at least two burners one by one. The second connecting arm in each transmission assembly is fixedly connected to the transmission shaft. Therefore, when the transmission shaft rotates around its own axis, it can drive the damper rotating shafts of the at least two burners to rotate around their respective axes together, so as to achieve the effect of uniformly adjusting the damper openings of the at least two burners, eliminating the need to manually adjust the damper openings of the at least two burners one by one, reducing operating costs, improving production efficiency, and solving the problem of leakage adjustment of the dampers of individual burners, providing a strong guarantee for the operating stability of the at least two burners.

[0023] The burner unit provided by the utility model adopts the above-mentioned burner damper control tooling, and under the action of the transmission shaft and at least two transmission components, the damper opening of at least two burners can be uniformly adjusted, which has the effect of reducing operating costs and improving production efficiency, and is also beneficial to improving the stability of the burner unit operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a top view of the burner air door control tooling provided by the embodiment of the utility model;

[0025] Figure 2 yes Figure 1 E-direction view in;

[0026] Figure 3 yes Figure 2 A partial enlarged view of the middle part;

[0027] Figure 4 yes Figure 1 FF section view in;

[0028] Figure 5 yes Figure 4 A partial enlarged view of point B in the middle.

[0029] In the figure:

[0030] 10. Burner; 11. Air door shaft; 12. Burner furnace side wall plate;

[0031] 110, first connecting arm; 111, third connecting member; 120, connecting rod; 121, tube body; 122, first connecting rod; 123, second connecting rod; 124, first nut; 125, second nut; 130, second connecting arm; 131, fourth connecting member; 200, transmission shaft; 310, third connecting arm; 311, second connecting member; 320, driving mechanism; 321, second support; 330, transmission rod; 331, first transmission rod; 332, second transmission rod; 333, first connecting member; 410, bearing seat; 420, first support. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0036] The present embodiment provides a burner damper control tool, which achieves the effect of uniformly adjusting the openings of at least two burner dampers.

[0037] Specifically, Figures 1 to 3 As shown, the burner damper control tool is used to control the opening of the dampers of at least two burners 10. For example, the number of the burners 10 can be two, three, eight or ten, etc., and at least two burners 10 are arranged along a first direction ( Figure 1 The at least two burners 10 have dampers in the same direction, and each damper is provided with a damper shaft 11. The burner damper control tooling includes a transmission shaft 200 and at least two transmission assemblies. Exemplarily, the number of the transmission assemblies may be two, three, eight or ten, etc., wherein the at least two transmission assemblies are configured to correspond to the at least two burners 10 one by one, and each transmission assembly includes a first connecting arm 110, a connecting rod 120 and a second connecting arm 130. The first connecting arm 11 0 is used to be fixedly connected with the damper shaft 11, the two ends of the connecting rod 120 are rotatably connected with the first connecting arm 110 and the second connecting arm 130 respectively, the transmission shaft 200 is fixedly connected with the second connecting arm 130 by means of screws or welding, the axes of at least two damper shafts 11 are parallel to the axis of the transmission shaft 200, the transmission shaft 200 can rotate around its own axis, and the transmission shaft 200 can drive the damper shaft 11 to rotate around its own axis through the second connecting arm 130, the connecting rod 120 and the first connecting arm 110.

[0038] The burner damper control tool provided in this embodiment is provided with a transmission shaft 200 and a transmission assembly. When the transmission shaft 200 rotates around its own axis, the second connecting arm 130 rotates around the axis of the transmission shaft 200 together with the transmission shaft 200, and the second connecting arm 130 drives the connecting rod 120 to swing. When the connecting rod 120 swings, it drives the first connecting arm 110 to rotate around the axis of the damper shaft 11, thereby driving the damper shaft 11 to rotate around its own axis to achieve the adjustment of the damper opening. The burner damper control tool is provided with at least two transmission assemblies, and the at least two transmission assemblies are connected to at least two burners. The second connecting arm 130 in each transmission assembly is fixedly connected to the transmission shaft 200. Therefore, when the transmission shaft 200 rotates around its own axis, it can drive the damper shafts 11 of at least two burners 10 to rotate around their respective axes, thereby achieving the effect of uniformly adjusting the damper openings of at least two burners 10, eliminating the need for manual adjustment of the damper openings of at least two burners 10 one by one, reducing operating costs, improving production efficiency, and solving the problem of damper leakage adjustment of individual burners 10, thereby providing a strong guarantee for the operating stability of at least two burners 10.

[0039] Optionally, the connecting rod 120 is rotatably connected to the first connecting arm 110 through a third connecting member 111, and the third connecting member 111 may be a pin, a spherical bearing, or a fisheye joint, etc. The connecting rod 120 is rotatably connected to the second connecting arm 130 through a fourth connecting member 131, and the fourth connecting member 131 may be a pin, a spherical bearing, or a fisheye joint, etc. The first connecting arm 110 is fixed to the damper shaft 11 by means of pins or welding.

[0040] Alternatively, if Figures 1 to 3 As shown, the connecting rod 120 is a telescopic rod. When there is an error between the actual installation size and the design size, the length of the connecting rod 120 can be adjusted to correct the size error. In addition, when the damper opening of an individual burner 10 is different from the damper opening of the remaining burners 10, it can be achieved by adjusting the length of the connecting rod 120 corresponding to the cover burner 10. It can be understood that when the lengths of the connecting rods 120 in at least two transmission assemblies are equal, the damper openings of at least two burners 10 are the same. In this embodiment, when all the connecting rods 120 in the same burner damper control fixture are adjusted to the same length, it can be achieved that the dampers of all burners 10 corresponding to the burner damper control fixture maintain the same opening under the drive of the transmission shaft 200.

[0041] Furthermore, if Figures 1 to 3 As shown, the connecting rod 120 includes a tube body 121, a first connecting rod 122 and a second connecting rod 123. The two ends of the tube body 121 are respectively fixed with a first nut 124 and a second nut 125. The first connecting rod 122 and the second connecting rod 123 are both provided with a third external thread. The first connecting rod 122 is inserted at one end of the tube body 121 and threadedly cooperates with the first nut 124. The second connecting rod 123 is inserted at the other end of the tube body 121 and threadedly cooperates with the second nut 125. The length of the connecting rod 120 can be adjusted by screwing the first connecting rod 122 and the second connecting rod 123.

[0042] In another embodiment, the connecting rod 120 includes a first connecting rod 122 and a second connecting rod 123, one end of the first connecting rod 122 is rotatably connected to the first connecting arm 110, and one end of the second connecting rod 123 is rotatably connected to the second connecting arm 130. One of the other end of the first connecting rod 122 and the other end of the second connecting rod 123 is provided with a threaded hole, and the other is provided with an external thread, so that the other end of the first connecting rod 122 is threadedly matched with the other end of the second connecting rod 123 to realize the adjustable length of the connecting rod 120.

[0043] Alternatively, if Figures 1 to 4As shown, the burner damper control tooling also includes a bearing seat 410 and a rolling bearing (not shown in the figure). The rolling bearing is installed on the bearing seat 410, and the rolling bearing sleeve is arranged on the transmission shaft 200, which can support the transmission shaft 200. Especially when the length of the transmission shaft 200 is long, this structural design is particularly suitable.

[0044] Furthermore, if Figures 1 to 4 As shown, the bearing seat 410 is installed on the first support 420, and the first support 420 is fixed on the burner furnace side wall plate 12 to achieve a reliable support effect for the bearing seat 410, the rolling bearing and the transmission shaft 200.

[0045] Alternatively, if Figures 1 to 5 As shown, the burner damper control tooling also includes a driving assembly, the driving assembly includes a third connecting arm 310 and a driving mechanism 320, the third connecting arm 310 is fixedly connected to the side wall of the transmission shaft 200, and the third connecting arm 310 is in transmission connection with the driving mechanism 320, and the driving mechanism 320 is used to drive the third connecting arm 310 to rotate around the axis of the transmission shaft 200. Under the driving action of the driving mechanism 320, the transmission shaft 200 can be rotated around its own axis, eliminating the operation of manually driving the transmission shaft 200 to rotate, and further reducing the operating cost. In the field of cracking furnace burners 10, due to the large number of cracking furnace burners 10, the driving mechanism 320 drives the transmission shaft 200 to rotate, and then drives the damper opening of multiple burners 10 spaced apart along the first direction, which greatly reduces the manual operation cost and improves the damper adjustment efficiency of the burner 10.

[0046] Furthermore, if Figures 1 to 5 As shown, the drive assembly also includes a transmission rod 330, the axis of the transmission rod 330 is perpendicular to the axis of the transmission shaft 200, one end of the transmission rod 330 is rotatably connected to the third connecting arm 310, and the other end of the transmission rod 330 is connected to the driving end of the driving mechanism 320. The driving mechanism 320 is used to drive the transmission rod 330 to reciprocate linearly along its axial direction, thereby driving the third connecting arm 310 to rotate around the axis of the transmission shaft 200 under the drive of the transmission rod 330, and then causing the transmission shaft 200 to rotate around its own axis.

[0047] Furthermore, if Figures 1 to 5 As shown, the other end of the transmission rod 330 and one of the driving ends of the driving mechanism 320 are provided with a first external thread, and the other is provided with a first threaded hole. The first external thread and the first threaded hole are threadedly matched, which not only realizes the connection between the transmission rod 330 and the driving end of the driving mechanism 320, but also can adjust the position of the transmission rod 330 according to the actual installation size, so as to facilitate the connection between the transmission rod 330 and the third connecting arm 310.

[0048] It can be understood that the first external thread can be set on the other end of the transmission rod 330, and accordingly, the first threaded hole is set on the driving end of the driving mechanism 320; the first external thread can also be set on the driving end of the driving mechanism 320, and accordingly, the first threaded hole is set on the other end of the transmission rod 330.

[0049] Furthermore, if Figures 1 to 5 As shown, the transmission rod 330 includes a first transmission rod 331 and a second transmission rod 332, the axes of the first transmission rod 331 and the second transmission rod 332 are both perpendicular to the axis of the transmission shaft 200, one end of the first transmission rod 331 is rotatably connected to the third connecting arm 310 via a second connecting member 311 (pin shaft, etc.), one end of the second transmission rod 332 and one of the driving ends of the driving mechanism 320 are provided with a first external thread, and the other is provided with a first threaded hole, the first external thread is threadedly matched with the first threaded hole, the other end of the first transmission rod 331 is rotatably connected to the other end of the second transmission rod 332, and this structural design can solve the problem of breakage of the first transmission rod 331 and the second transmission rod 332 due to excessive local stress, thereby improving the reliability of the burner damper control tooling.

[0050] Optionally, the driving mechanism 320 may be a mechanism having a reciprocating linear driving function, such as a pneumatic actuator.

[0051] Alternatively, if Figures 1 to 4 As shown, a second support 321 is welded and fixed to the burner furnace side wall plate 12 , and a fixed end of the driving mechanism 320 is mounted on the second support 321 .

[0052] Alternatively, if Figures 1 to 5 As shown, the transmission rod 330 also includes a first connecting member 333, and the other end of the second transmission rod 332 is rotatably connected to the first connecting member 333 by means of a pin or other element. The other end of the first transmission rod 331 and one of the first connecting member 333 are provided with a second external thread, and the other is provided with a second threaded hole. The second external thread is threadably matched with the second threaded hole to adjust the position of the first transmission rod 331 according to different installation dimensions, thereby reducing the difficulty of assembly.

[0053] It can be understood that the second external thread can be set at the other end of the first transmission rod 331, and accordingly, the second threaded hole is set on the first connecting member 333; the second external thread can also be set on the first connecting member 333, and accordingly, the second threaded hole is set at the other end of the first transmission rod 331.

[0054] This embodiment also provides a burner unit, which has high production efficiency and operation stability and low operating cost.

[0055] Specifically, Figure 1As shown, the burner unit includes a burner group and the above-mentioned burner damper control tooling, the burner group includes at least two burners 10, illustratively, the number of burners 10 can be two, three, eight or ten, etc., at least two burners 10 are arranged at intervals along a first direction, at least two burners 10 correspond one-to-one to at least two transmission assemblies, a damper shaft 11 is provided on the damper of each burner 10, the axes of at least two damper shafts 11 are parallel to the axis of the transmission shaft 200, and each first connecting arm 110 is connected to a corresponding damper shaft 11.

[0056] The burner unit adopts the above-mentioned burner damper control tooling, which can uniformly adjust the damper opening of at least two burners 10 under the action of the transmission shaft 200 and at least two transmission components, which has the effect of reducing operating costs and improving production efficiency, and is also beneficial to improving the stability of the burner unit operation.

[0057] Optionally, the number of burner groups and burner damper control fixtures are both more than two and correspond one to one. In this embodiment, Figure 1 As shown, there are two groups of burner groups and burner air door control tools, and the two groups of burner groups are arranged along the second direction ( Figure 1 The y direction in the figure is arranged at intervals.

[0058] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. Burner air door control tooling, characterized in that: The burner damper control tool is used to control the opening of the dampers of at least two burners, at least two of the burners are arranged at intervals along a first direction, each of the dampers is provided with a damper shaft, and the burner damper control tool comprises: At least two transmission assemblies, the at least two transmission assemblies being configured to correspond one-to-one to at least two burners (10), each of the transmission assemblies comprising a first connecting arm (110), a connecting rod (120) and a second connecting arm (130), the first connecting arm (110) being used for being fixedly connected to the damper shaft (11), and the two ends of the connecting rod (120) being rotatably connected to the first connecting arm (110) and the second connecting arm (130) respectively; A transmission shaft (200), wherein the transmission shaft (200) is fixedly connected to the second connecting arm (130), the axes of at least two of the damper rotating shafts (11) are parallel to the axis of the transmission shaft (200), the transmission shaft (200) can rotate around its own axis, and the transmission shaft (200) can drive the damper rotating shaft (11) to rotate around its own axis through the second connecting arm (130), the connecting rod (120) and the first connecting arm (110).

2. The burner damper control tooling according to claim 1, characterized in that: The burner damper control tooling also includes a driving assembly, the driving assembly including a third connecting arm (310) and a driving mechanism (320), the third connecting arm (310) being fixedly connected to the transmission shaft (200), and the third connecting arm (310) being transmission-connected to the driving mechanism (320), and the driving mechanism (320) being used to drive the third connecting arm (310) to rotate around the axis of the transmission shaft (200).

3. The burner damper control tooling according to claim 2, characterized in that: The driving assembly further comprises a transmission rod (330), the axis of the transmission rod (330) being perpendicular to the axis of the transmission shaft (200), one end of the transmission rod (330) being rotationally connected to the third connecting arm (310), and the other end of the transmission rod (330) being connected to the driving end of the driving mechanism (320), and the driving mechanism (320) being used to drive the transmission rod (330) to reciprocate linearly along its axis.

4. The burner damper control tooling according to claim 3, characterized in that: One of the other end of the transmission rod (330) and the driving end of the driving mechanism (320) is provided with a first external thread, and the other is provided with a first threaded hole, and the first external thread is threadably matched with the first threaded hole.

5. The burner damper control tooling according to claim 3, characterized in that: The transmission rod (330) comprises a first transmission rod (331) and a second transmission rod (332), wherein the axis of the first transmission rod (331) and the axis of the second transmission rod (332) are both perpendicular to the axis of the transmission shaft (200), one end of the first transmission rod (331) is rotatably connected to the third connecting arm (310), one end of the second transmission rod (332) is connected to the driving end of the driving mechanism (320), and the other end of the first transmission rod (331) is rotatably connected to the other end of the second transmission rod (332).

6. The burner damper control tooling according to claim 5, characterized in that: The transmission rod (330) further includes a first connecting member (333), the other end of the second transmission rod (332) being rotatably connected to the first connecting member (333), one of the other end of the first transmission rod (331) and the first connecting member (333) being provided with a second external thread, and the other being provided with a second threaded hole, the second external thread being threadably matched with the second threaded hole.

7. The burner damper control tooling according to any one of claims 1 to 6, characterized in that: The burner damper control tooling further comprises a bearing seat (410) and a rolling bearing, wherein the rolling bearing is mounted on the bearing seat (410), and the rolling bearing is sleeved on the transmission shaft (200).

8. The burner damper control tooling according to any one of claims 1 to 6, characterized in that: The connecting rod (120) is a telescopic rod.

9. The burner damper control tooling according to claim 8, characterized in that: The connecting rod (120) comprises a tube body (121), a first connecting rod (122) and a second connecting rod (123); a first nut (124) and a second nut (125) are respectively fixed at two ends of the tube body (121); the first connecting rod (122) and the second connecting rod (123) are both provided with a third external thread; the first connecting rod (122) is inserted into one end of the tube body (121) and threadedly cooperates with the first nut (124); the second connecting rod (123) is inserted into the other end of the tube body (121) and threadedly cooperates with the second nut (125).

10. A burner unit, characterized in that It comprises a burner group and a burner damper control tool as described in any one of claims 1 to 9, wherein the burner group comprises at least two burners (10), at least two of the burners (10) are spaced apart along a first direction, at least two of the burners (10) correspond one-to-one to at least two of the transmission assemblies, a damper shaft (11) is provided on the damper of each of the burners (10), the axes of at least two of the damper shafts (11) are parallel to the axis of the transmission shaft (200), and each of the first connecting arms (110) is connected to a corresponding damper shaft (11).

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