A swirl blade angle control device for cylindrical burners

Abstract

A swirl blade angle control device applied to a cylindrical burner, relating to a swirl blade angle control device; in order to solve the problem that the existing swirl blade control device is prone to sleeve deflection, and then stuck with the wind tube and cannot be operated; the present invention discloses a swirl blade angle control device applied to a cylindrical burner, comprising a wind tube, a drive ring, a drive assembly, a plurality of crank connecting rod assemblies and a plurality of blade shaft assemblies; the drive ring is sleeved on the wind tube and is rotatably connected to the wind tube, the plurality of blade shaft assemblies are circumferentially uniformly arranged on the side wall of the wind tube, the airflow guide end of the blade shaft assembly is in the wind tube, the drive end of the blade shaft assembly vertically passes through the side wall of the wind tube and is connected to one side of the drive ring through a group of crank connecting rod assemblies, and one end of the drive assembly is connected to the other side of the drive ring. The present invention is mainly used to adjust the angle of the swirl blade to ensure that the angle adjustment of all swirl blades is consistent.

Description

Technical Field

[0001] The invention relates to a swirl blade angle control device, in particular to a swirl blade angle control device applied to a cylindrical burner. Background Art

[0002] The cylindrical burner generally has a complex structure and is equipped with multiple swirl blade angle control devices to control the swirl intensity of the air in each channel. At present, the swirl blade angle control device of the cylindrical burner is generally designed as a sleeve structure. By pushing and pulling the two pull rods of the sleeve, the sleeve is driven to produce a linear displacement along the axis of the wind tube, which drives the two connecting plates connected to each blade shaft to produce an angular displacement, and then drives the blade to produce an angular displacement, so as to achieve the purpose of controlling the swirl intensity of the air in each channel. However, this structure has the following disadvantages: 1. Due to processing accuracy, gravity, friction, unbalanced force of the two pull rods and other reasons, the sleeve is easily deflected, and then stuck with the wind tube and cannot be operated; 2. Due to the deflection of the sleeve, when pushing and pulling the sleeve, the linear displacements generated at various locations are different, resulting in different angular displacements of each blade, asynchronous rotation, and inconsistent rotation angles, which affects the swirl intensity and the flow field at the burner nozzle; 3. The optimal setting angle of the two pull rods for each sleeve is difficult to determine, and it is very easy to get stuck if the design is unreasonable; 4. Since each burner is provided with multiple sets of swirl blade angle control devices and air gates, each swirl blade angle control device and air gate requires two pull rods, resulting in too many pull rods on the burner panel, and other equipment needs to be set on the panel, the layout is cumbersome, and the operation is inconvenient. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a swirl blade angle control device applied to a cylindrical burner, which can flexibly control the swirl blade angle of the cylindrical burner, is simple to arrange, and is easy to operate.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] A swirl blade angle control device for a cylindrical burner comprises a wind tube, a drive ring, a drive assembly, a plurality of crank-connecting rod assemblies and a plurality of blade shaft assemblies; the drive ring is sleeved on the wind tube and rotatably connected to the wind tube, the plurality of blade shaft assemblies are circumferentially evenly arranged on the side wall of the wind tube, the airflow guide end of the blade shaft assembly is in the wind tube, the drive end of the blade shaft assembly vertically passes through the side wall of the wind tube and is connected to one side of the drive ring through a group of crank-connecting rod assemblies, and one end of the drive assembly is connected to the other side of the drive ring.

[0006] Compared with the prior art, the present invention has the following beneficial effects:

[0007] 1. In the present invention, three groups of guide and positioning components are provided, so that radial displacement and axial displacement will not occur between the drive ring and the wind tube, and only circumferential rotation will occur. The weight of the drive ring is uniform at various locations along the circumferential direction, and the center of gravity and the center of motion are both on the axis of the burner (wind tube). The influence of gravity is extremely small, and the rotation is more labor-saving. There is no direct contact between the drive ring and the wind tube, and the friction resistance is greatly reduced, and the processing accuracy requirements for each component are not high. At the same time, the three groups of guide and positioning components ensure that the rotation angle of each swirl blade is the same, thereby ensuring the swirl intensity of the air in the cylindrical burner channel and the uniformity of the flow field at the burner nozzle, and no turbulence will occur.

[0008] 2. Due to the eccentric setting of the driving assembly of the present invention, the driving ring can achieve the purpose of adjusting the angle of the swirl blade by a very small rotation angle; the driving assembly is small in size, easy to arrange and requires a small operating space; the driving assembly can be manually operated or driven by an electric or pneumatic actuator, and the actuator is simply arranged. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The accompanying drawings, as a part of this application, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute improper limitations on the present invention.

[0010] Figure 1 It is a three-dimensional schematic diagram of the present invention when the blade is rotated to the maximum angle state;

[0011] Figure 2 It is a three-dimensional schematic diagram of the present invention when the blades are rotated to a medium angle state;

[0012] Figure 3 It is a three-dimensional schematic diagram of the present invention when the blade is rotated to the minimum angle state;

[0013] Figure 4 The present invention is attached Figure 1 A partial schematic diagram of the middle A direction;

[0014] Figure 5 The present invention is attached Figure 2 A partial schematic diagram of the middle C direction;

[0015] Figure 6 The present invention is attached Figure 3 A partial schematic diagram of the middle E direction;

[0016] Figure 7 The present invention is attached Figure 1 Partial schematic diagram in the middle B direction;

[0017] Figure 8 The present invention is attached Figure 2 The local schematic diagram in the middle D direction;

[0018] Fig. 9 The present invention is attached Figure 3 Partial schematic diagram in the middle F direction;

[0019] Fig.10 It is a schematic diagram of the structure of the guiding and positioning component in the present invention.

[0020] In the figure: 1-air cylinder; 2-driving ring; 2-1-waist hole Ⅰ; 3-driving rotating rod; 4-connecting crank Ⅰ; 5-driving shaft; 6-radial pulley bracket; 7-axial pulley support; 8-radial positioning pulley; 9-axial positioning pulley; 10-connecting plate; 10-1-waist hole Ⅱ; 11-connecting crank Ⅱ; 12-pin shaft; 13-rotating shaft; 14-swirl blade. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, 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 on the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] See also Figures 1 to 10As shown, an embodiment of the present application provides a swirl blade angle control device for a cylindrical burner, comprising a wind tube 1, a drive ring 2, a drive assembly, a plurality of crank-connecting rod assemblies and a plurality of blade shaft assemblies; the drive ring 2 is sleeved on the wind tube 1 and rotatably connected to the wind tube 1, and the axis of the drive ring 2 coincides with the axis of the wind tube 1; the plurality of blade shaft assemblies are circumferentially and evenly arranged on the side wall of the wind tube 1, and the airflow guide end of the blade shaft assembly is in the wind tube 1, which is used to control the air swirl intensity of each channel in the cylindrical burner, the drive end of the blade shaft assembly vertically passes through the side wall of the wind tube 1 and is connected to one side of the drive ring 2 through a group of crank-connecting rod assemblies, and the drive end of the blade shaft assembly is the power source for adjusting the angle of the swirl blade; one end of the drive assembly is connected to the other side of the drive ring 2, and the drive assembly is used to drive the rotation of the drive ring 2, thereby ultimately realizing the angle adjustment of the airflow guide end of the blade shaft assembly.

[0025] In this embodiment, the driving assembly drives the driving ring 2 connected thereto to rotate around the axis of the wind tube 1. The rotational motion of the driving ring 2 is converted into the rotational motion of the blade shaft assembly under the action of the crank-connecting rod assembly, thereby realizing the angle adjustment of the airflow guide end of the blade shaft assembly and changing the air swirl intensity of each channel of the cylindrical burner.

[0026] In a possible embodiment, Figure 1 , Figure 2 and Figure 3 As shown, the driving assembly includes a driving rod 3, a connecting crank Ⅰ4 and a driving shaft 5, one end of the driving rod 3 is connected to the driving mechanism, the other end of the driving rod 3 is vertically fixedly connected to one end of the connecting crank Ⅰ4, the other end of the connecting crank Ⅰ4 is vertically connected to one end of the driving shaft 5, and the other end of the driving shaft 5 is connected to the driving ring 2.

[0027] In this embodiment, the driving mechanism can be driven by human power or by an electric or pneumatic actuator; when the driving rod 3 and the driving ring 2 are arranged concentrically, the driving rod 3 drives the connecting crank Ⅰ4 and the driving shaft 5 to rotate around the axis of the driving rod 3, and the driving shaft 5 drives the driving ring 2 connected thereto to rotate around its own axis; the rotation angle of the driving rod 3 is equal to the rotation angle of the driving ring 2, and the connecting end of the driving shaft 5 and the driving ring 2 can be fixedly connected or in a plug-in form.

[0028] In a possible embodiment, Figures 1 to 6As shown, the driving assembly includes a driving rod 3, a connecting crank Ⅰ4 and a driving shaft 5. The driving rod 3 is eccentrically arranged with the driving ring 2, and a radially arranged waist hole Ⅰ2-1 is opened on the driving ring 2; one end of the driving rod 3 is connected to the driving mechanism, and the other end of the driving rod 3 is vertically fixedly connected to one end of the connecting crank Ⅰ4, and the other end of the connecting crank Ⅰ4 is vertically connected to one end of the driving shaft 5, and the other end of the driving shaft 5 is inserted into the waist hole Ⅰ2-1 of the driving ring 2.

[0029] In this embodiment, the driving mechanism can be manually driven or driven by an electric or pneumatic actuator; when the driving rod 3 and the driving ring 2 are eccentrically arranged, the driving rod 3 drives the connecting crank Ⅰ4 and the driving shaft 5 to rotate around the axis of the driving rod 3. While the driving shaft 5 rotates around the axis of the driving rod 3, it slides along the center line of the waist hole Ⅰ2-1 on the driving ring 2, and at the same time drives the driving ring 2 to rotate around the axis of the wind tube 1; the rotation angle of the driving rod 3 is greater than the rotation angle of the driving ring 2.

[0030] In a possible embodiment, Figure 1 , Figure 2 and Figure 3 As shown, the swirl blade angle control device also includes three groups of guide positioning components, and the three groups of guide positioning components are evenly arranged between the wind cylinder 1 and the driving ring 2 in the circumferential direction.

[0031] In this embodiment, the driving ring 2 can only rotate around the axis of the wind tube 1 under the action of multiple sets of guiding and positioning components, and the driving ring 2 and the wind tube 1 cannot achieve axial movement and radial movement.

[0032] In a possible embodiment, Fig.10 As shown, each group of guide and positioning components includes a radial pulley bracket 6, two axial pulley pillars 7, a radial positioning pulley 8 and four axial positioning pulleys 9; the radial positioning pulley 8 is sleeved on the radial pulley bracket 6; two axial positioning pulleys 9 are axially sleeved on each axial pulley pillar 7, and there is a certain distance between the two axial positioning pulleys 9; the two axial pulley pillars 7 are respectively fixed to the radial pulley bracket 6 and are located on both sides of the radial positioning pulley 8; the radial pulley bracket 6 is fixed on the outer wall of the wind tube 1, and the rim of the radial positioning pulley 8 abuts against the inner ring wall of the driving ring 2; the two axial pulley pillars 7 are respectively located on both sides of the driving ring 2, and the axial positioning pulleys 9 on both sides of the driving ring 2 clamp it.

[0033] In this embodiment, since three sets of guide positioning components are provided, three radial positioning pulleys 8 provide radial support for the drive ring 2 to prevent the drive ring 2 from moving along the radial direction of the wind tube 1 or the drive ring 2 from being eccentric with the wind tube 1; three sets of axial positioning pulleys 9 limit the drive ring 2 in the axial direction to prevent the drive ring 2 from moving along the axial direction of the wind tube 1 or the drive ring 2 from being eccentric with the wind tube 1, thereby preventing the swirl blades in the multiple sets of blade shaft components from rotating at inconsistent angles, resulting in turbulent air swirls in each channel of the cylindrical burner; the three sets of guide positioning components are provided so that the drive ring 2 can only perform rotational motion around the axis of the wind tube 1.

[0034] In a possible embodiment, Figure 7 , Figure 8 and Fig. 9 As shown, each crank-connecting rod assembly includes a connecting plate 10, a connecting crank II 11 and a pin 12; one end of the connecting plate 10 is fixedly connected to the drive ring 2, and the other end of the connecting plate 10 is provided with a waist hole II 10-1, one end of the connecting crank II 11 is inserted into the waist hole II 10-1 of the connecting plate 10 through the pin 12, and the other end of the connecting crank II 11 is fixedly connected to the blade shaft assembly.

[0035] In this embodiment, when the driving ring 2 rotates, the connecting plate 10 arranged on the driving ring 2 rotates with the driving ring 2 around the axis of the wind tube 1. The connecting plate 10 drives the connecting crank Ⅱ11 to rotate around the axis of the blade shaft assembly through the pin shaft 12. The connecting crank Ⅱ11 drives the blade shaft assembly to rotate around its own axis. During this process, the pin shaft 12 slides along the center line of the waist hole Ⅱ10-1.

[0036] In a possible embodiment, the center line of the waist hole II10 - 1 is parallel to the axis of the wind tube 1 .

[0037] In a possible embodiment, each blade shaft assembly includes a shaft 13 and a swirl blade 14, wherein the swirl blade 14 is disposed at one end of the shaft 13, and the other end of the shaft 13 is vertically inserted into the side wall of the wind tube 1 and fixedly connected to the connecting crank II 11.

[0038] In this embodiment, the axes of all the rotating shafts 13 are arranged along the radial direction of the wind cylinder 1 and are on the same plane.

[0039] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in a manner different from that described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be used in other described embodiments.

Claims

1. A swirl blade angle control device for a cylindrical burner, characterized in that: The invention comprises a wind tube (1), a driving ring (2), a driving assembly, a plurality of crank-connecting rod assemblies and a plurality of blade shaft assemblies; the driving ring (2) is sleeved on the wind tube (1) and is rotatably connected to the wind tube (1); the plurality of blade shaft assemblies are evenly arranged on the side wall of the wind tube (1) in the circumferential direction; the airflow guide end of the blade shaft assembly is located in the wind tube (1); the driving end of the blade shaft assembly vertically passes through the side wall of the wind tube (1) and is connected to one side of the driving ring (2) via a group of crank-connecting rod assemblies; and one end of the driving assembly is connected to the other side of the driving ring (2); The swirl blade angle control device further comprises three sets of guide and positioning components, which are evenly arranged in the circumferential direction between the wind tube (1) and the drive ring (2); Each group of guide positioning components comprises a radial pulley bracket (6), two axial pulley pillars (7), a radial positioning pulley (8) and four axial positioning pulleys (9); the radial positioning pulley (8) is sleeved on the radial pulley bracket (6); two axial positioning pulleys (9) are axially sleeved on each axial pulley pillar (7), and the two axial pulley pillars (7) are respectively fixed to the radial pulley bracket (6) and are located on both sides of the radial positioning pulley (8); the radial pulley bracket (6) is fixed on the outer wall of the wind tube (1), and the rim of the radial positioning pulley (8) abuts against the inner ring wall of the driving ring (2); the two axial pulley pillars (7) are respectively located on both sides of the driving ring (2), and the axial positioning pulleys (9) on both sides of the driving ring (2) clamp it.

2. The swirl blade angle control device for a cylindrical burner according to claim 1, characterized in that: The driving assembly comprises a driving rotating rod (3), a connecting crank I (4) and a driving shaft (5), one end of the driving rotating rod (3) is connected to the driving mechanism, the other end of the driving rotating rod (3) is vertically fixedly connected to one end of the connecting crank I (4), the other end of the connecting crank I (4) is vertically connected to one end of the driving shaft (5), and the other end of the driving shaft (5) is connected to the driving ring (2).

3. The swirl blade angle control device for a cylindrical burner according to claim 1, characterized in that: The driving assembly comprises a driving rotating rod (3), a connecting crank I (4) and a driving shaft (5); the driving rotating rod (3) is eccentrically arranged with the driving ring (2), and the driving ring (2) is provided with a radially arranged waist hole I (2-1); one end of the driving rotating rod (3) is connected to the driving mechanism, the other end of the driving rotating rod (3) is vertically fixedly connected to one end of the connecting crank I (4), the other end of the connecting crank I (4) is vertically connected to one end of the driving shaft (5), and the other end of the driving shaft (5) is inserted into the waist hole I (2-1) of the driving ring (2).

4. The swirl blade angle control device for a cylindrical burner according to claim 1, characterized in that: Each crank-connecting rod assembly comprises a connecting plate (10), a connecting crank II (11) and a pin shaft (12); one end of the connecting plate (10) is fixedly connected to the driving ring (2), and the other end of the connecting plate (10) is provided with a waist hole II (10-1); one end of the connecting crank II (11) is inserted into the waist hole II (10-1) of the connecting plate (10) through the pin shaft (12), and the other end of the connecting crank II (11) is fixedly connected to the blade shaft assembly.

5. The swirl blade angle control device for a cylindrical burner according to claim 4, characterized in that: The center line of the waist hole II (10-1) is parallel to the axis of the wind tube (1).

6. The swirl blade angle control device for a cylindrical burner according to claim 5, characterized in that: Each set of blade shaft assemblies comprises a shaft (13) and a swirl blade (14). The swirl blade (14) is arranged at one end of the shaft (13). The other end of the shaft (13) is inserted into the side wall of the wind tube (1) and is fixedly connected to the connecting crank II (11).

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