CN211781216U

CN211781216U - Air inlet flow regulating mechanism of burner

Info

Publication number: CN211781216U
Application number: CN202020297981.1U
Authority: CN
Inventors: 潘文清
Original assignee: Wenling Bairan Machinery Co ltd
Current assignee: Wenling Bairan Machinery Co ltd
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-10-27
Anticipated expiration: 2030-03-11

Abstract

The utility model provides a combustor inlet flow adjustment mechanism belongs to mechanical technical field. The utility model discloses a drive mechanism and possess the shell of air duct and gas channel, be equipped with air door subassembly one and air door subassembly two in air duct and the gas channel respectively, air door subassembly one includes that the outer end stretches out the drive shaft one of shell, and air door subassembly two includes that the outer end stretches out the drive shaft two of shell, and drive mechanism can drive shaft one and drive shaft two to rotate simultaneously in order to control air door subassembly one and air door subassembly two apertures, including the rotary drive source who possesses the pivot, the pivot is connected with drive shaft two through link mechanism two; the rotating shaft is further fixedly provided with a support, an arc surface is obliquely arranged on the support, a rod body is arranged on one side of the arc surface, a roller is rotatably arranged on one side of the rod body, a spring enabling the roller to tend to press on the arc surface is arranged between the rod body and the shell, one end of the rod body is hinged with the shell, and the other end of the rod body is connected with the first driving shaft through a first connecting rod mechanism. This adjustment mechanism precision is high.

Description

Air inlet flow regulating mechanism of burner

Technical Field

The utility model belongs to the technical field of machinery, a combustor, especially a combustor inlet flow adjustment mechanism are related to.

Background

The burner is a general term for a device for ejecting fuel and air in a certain manner to perform mixed combustion.

The existing burner is a dual-purpose burner as disclosed in the chinese patent library [ application number: 201910156553.9 ] comprising a mixing chamber for mixing biomass fuel gas and combustion air, further comprising: the first adjusting door and the second adjusting door are respectively used for adjusting the quantity of combustion-supporting air and the quantity of biomass gas fed into the mixing chamber; the natural gas nozzle structure comprises a combustion cavity communicated with the mixing cavity and a natural gas channel communicated with the combustion cavity; the third adjusting door is used for adjusting the amount of combustion-supporting air fed into the combustion chamber through the mixing chamber or adjusting the amount of mixed gas formed after the combustion-supporting air and the biomass gas are mixed; and the igniter is used for igniting the mixed gas of the natural gas and/or the biomass gas and the combustion air which are fed into the combustion chamber.

In the burner, the gas and air conditioning are separately and independently carried out, so that a certain delay error exists between the gas and air conditioning, the mixing precision of the gas and the air is influenced, and the combustion quality is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having above-mentioned problem to current technique, provided a combustor inlet flow adjustment mechanism, the technical problem of solution is how to improve the air feed precision.

The purpose of the utility model can be realized by the following technical proposal: the combustor air inlet flow adjusting mechanism comprises a driving mechanism and a shell with an air channel and a gas channel, wherein a first air door assembly and a second air door assembly are arranged in the air channel and the gas channel respectively, the first air door assembly comprises a first driving shaft with an outer end extending out of the shell, and the second air door assembly comprises a second driving shaft with an outer end extending out of the shell; the support is further fixed to the rotating shaft, an arc surface coaxial with the rotating shaft is arranged on the support, the arc surface is obliquely arranged, a rod body is arranged on one side of the arc surface, a roller is arranged on one side of the rod body in a rotating mode, a spring enabling the roller to have a trend of pressing on the arc surface is arranged between the rod body and the shell, one end of the rod body is hinged to the shell through a supporting shaft, the axes of the supporting shaft and the rotating shaft are perpendicular, and the other end of the rod body is connected with the first driving shaft through a.

The first air door component and the second air door component are linked by driving the first driving shaft and the second driving shaft to rotate simultaneously to control the opening of the first air door component and the opening of the second air door component, so that the air and gas mixing proportion is accurately controlled, and the combustion performance and efficiency are improved.

In the above-mentioned burner air intake flow adjustment mechanism, the gas passageway include entry, export and be used for the air cavity of intercommunication entry and export, air cavity and two coaxial settings of drive shaft, entry and export all set up on the air cavity lateral wall, and the inside wall of air cavity is the periphery, the inner of drive shaft two have the shape and the size all with the circular arc piece that the air cavity inside wall matches, the circular arc piece lateral wall pastes with the air cavity inside wall and leans on, and rotates the break-make of controllable entry of circular arc piece and export. By adopting the design, the device has the advantage of simple structure.

In the air inlet flow regulating mechanism of the combustor, the inlet and the outlet are opposite, two arc sheets are uniformly distributed along the circumferential direction of the air cavity, and the two arc sheets can respectively block the inlet and the outlet. By adopting the design, the working stability is better.

In the air inlet flow regulating mechanism of the burner, the cylinder is arranged between the two circular arc sheets, two sides of the cylinder are attached to the inner side wall of the air cavity, the other two sides of the cylinder are respectively matched with the two circular arc sheets in a plane, the second driving shaft is hollow, the second driving shaft is internally provided with the regulating rod, one end of the regulating rod is in threaded connection with the second driving shaft, the other end of the regulating rod extends out of the second driving shaft and is in threaded connection with the cylinder, and a seal is formed between the side wall of the regulating rod and the. The adjusting rod is rotated and is converted into a cylinder to slide along the two axial directions of the driving shaft under the matching of the cylinder and the plane of the circular arc sheet, so that the width of a flow passage between the inlet and the outlet is changed, and the gas quantity is controlled more accurately.

In the above-mentioned mechanism for adjusting the intake air flow of the burner, the inner side wall of the cylinder is integrally formed with a connecting seat, the connecting seat is provided with a threaded hole which is arranged along the two axial directions of the driving shaft in a penetrating way, and the adjusting rod is in threaded connection with the threaded hole. By adopting the design, the device has the advantages of simple structure and convenience in installation.

In the intake flow regulating mechanism of the burner, the side wall of the regulating rod is provided with an annular groove which is coaxial with the regulating rod, a sealing ring is arranged in the annular groove, and the outer side wall of the sealing ring is abutted against the inner side wall of the second driving shaft. Under the action of the sealing ring, reliable sealing is formed between the adjusting rod and the second driving shaft, and gas leakage can be effectively prevented.

In the air inlet flow adjusting mechanism of the burner, one end of the adjusting rod, which is far away from the cylinder, extends out of the second driving shaft and is fixedly connected with the knob. The knob is arranged, so that the adjusting rod can be rotated conveniently.

Compared with the prior art, the air inlet flow adjusting mechanism of the combustor has the following advantages:

1. the first air door component and the second air door component are linked by driving the first driving shaft and the second driving shaft to rotate simultaneously to control the opening of the first air door component and the opening of the second air door component, so that the air and gas mixing proportion is accurately controlled, and the combustion performance and efficiency are improved.

2. The adjusting rod is rotated and is converted into a cylinder to slide along the two axial directions of the driving shaft under the matching of the cylinder and the plane of the circular arc sheet, so that the width of a flow passage between the inlet and the outlet is changed, and the gas quantity is controlled more accurately.

Drawings

Fig. 1 is a perspective view of the present adjustment mechanism.

Fig. 2 is a schematic perspective view of the adjusting mechanism in another direction.

FIG. 3 is a schematic sectional view of the connection between the second driving shaft and the cylinder.

FIG. 4 is a schematic perspective view of the connection between the second driving shaft and the cylinder.

In the figure, 1, a housing; 1a, an air channel; 1b, a gas channel; 1b1, inlet; 1b2, outlet; 1b3, air cavity; 2. a first air door component; 2a, a first driving shaft; 3. a second driving shaft; 3a, arc sheets; 4. a rotary drive source; 4a, a rotating shaft; 5. a first connecting rod mechanism; 6. a second connecting rod mechanism; 7. a support; 7a, an arc surface; 8. a rod body; 9. a roller; 10. a spring; 11. a support shaft; 12. a cylinder; 12a, a connecting seat; 13. adjusting a rod; 14. a seal ring; 15. a knob.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the burner intake air flow rate adjustment mechanism includes a drive mechanism and a housing 1 having an air passage 1a and a gas passage 1 b.

Wherein, be equipped with air door subassembly one 2 in the air passage 1a, air door subassembly one 2 is prior art, including air door and with air door articulated drive shaft one 2a, and the outer end of drive shaft one 2a stretches out shell 1. And a second air door assembly is arranged in the gas channel 1b, and the second air door assembly comprises a second driving shaft 3 of which the outer end extends out of the shell 1.

The driving mechanism can drive the first driving shaft 2a and the second driving shaft 3 to rotate simultaneously so as to control the first air door assembly 2 and the second air door assembly to open. Specifically, the drive mechanism includes a rotary drive source 4 having a rotary shaft 4a, and the length of the rotary shaft 4a extends in the axial direction of the air passage 1 a. In the present embodiment, the rotation drive source 4 is a solenoid valve, and naturally, the rotation drive source 4 may be a motor. As shown in fig. 2, the rotating shaft 4a is connected to the second driving shaft 3 through a second link mechanism 6, the second link mechanism 6 is a common link pair, and two ends of the link pair are respectively connected to the second driving shaft 3 and the rotating shaft 4a, and the specific structure thereof will not be described in detail herein. The rotating shaft 4a is also fixed with a bracket 7, the bracket 7 is provided with an arc surface 7a which is coaxial with the rotating shaft 4a, and the arc surface 7a is obliquely arranged. The rod body 8 is arranged on one side of the arc surface 7a, the roller 9 is rotatably arranged on one side of the rod body 8, the spring 10 enabling the roller 9 to have a trend of pressing on the arc surface 7a is arranged between the rod body 8 and the shell 1, one end of the rod body 8 is hinged to the shell 1 through the supporting shaft 11, the supporting shaft 11 is perpendicular to the axis of the rotating shaft 4a, and the other end of the rod body 8 is connected with the driving shaft 2a through the link mechanism 5. In the embodiment, the roller 9 is rotatably connected with the rod body 8 through a shaft; the spring 10 is a tension spring, and two ends of the tension spring are fixedly connected with the rod body 8 and the shell 1 respectively; the first link mechanism 5 is a common link pair, and two ends of the link pair are respectively connected with the first driving shaft 2a and the rod body 8, and the specific structure thereof will not be described in detail.

To explain further, as shown in fig. 3 and 4, the gas passage 1b includes an inlet 1b1, an outlet 1b2, and an air chamber 1b3 for communicating the inlet 1b1 and the outlet 1b 2. Wherein, the air chamber 1b3 and the second driving shaft 3 are coaxially arranged, the inlet 1b1 and the outlet 1b2 are both arranged on the side wall of the air chamber 1b3, and the inner side wall of the air chamber 1b3 is a circumferential surface. The inner end of the second driving shaft 3 is provided with an arc piece 3a with the shape and the size matched with the inner side wall of the air cavity 1b3, and preferably, the arc piece 3a and the second driving shaft 3 are of an integrated structure. The outer side wall of the circular arc piece 3a is abutted against the inner side wall of the air cavity 1b3, and the inlet 1b1 and the outlet 1b2 can be controlled by rotating the circular arc piece 3 a. In this embodiment, the inlet 1b1 and the outlet 1b2 are opposite, the two circular arc pieces 3a are uniformly distributed along the circumferential direction of the air cavity 1b3, and the two circular arc pieces 3a can respectively block the inlet 1b1 and the outlet 1b2 so as to open and close the inlet 1b1 and the outlet 1b 2.

Furthermore, a cylinder 12 is arranged between the two circular arc pieces 3a, two sides of the cylinder 12 are attached to the inner side walls of the air cavity 1b3, and the other two sides of the cylinder 12 are respectively matched with the planes of the two circular arc pieces 3a, namely, the other two sides of the cylinder 12 are both a first plane, the inner side walls of the circular arc pieces 3a are a second plane, and the first plane and the second plane are attached. As shown in fig. 1, the second driving shaft 3 is hollow, an adjusting rod 13 is arranged in the second driving shaft 3, one end of the adjusting rod 13 is in threaded connection with the second driving shaft 3, and the other end of the adjusting rod 13 extends out of the second driving shaft 3 and is in threaded connection with the cylinder 12. And a seal is formed between the side wall of the adjusting rod 13 and the inner wall of the second driving shaft 3. The adjusting rod 13 is rotated and is converted into the cylinder 12 to axially slide along the second driving shaft 3 under the planar matching of the cylinder 12 and the circular arc piece 3a, so that the flow passage width between the inlet 1b1 and the outlet 1b2 is changed, and the gas quantity is controlled more accurately.

The connection mode of the adjusting rod 13 and the cylinder 12 is as follows: a connecting seat 12a is integrally formed on the inner side wall of the cylinder 12, a threaded hole which penetrates through the connecting seat 12a along the axial direction of the second driving shaft 3 is formed in the connecting seat, and the adjusting rod 13 is in threaded connection with the threaded hole.

As shown in fig. 3, an annular groove is formed in the side wall of the adjusting rod 13 and is coaxial with the adjusting rod 13, a sealing ring 14 is arranged in the annular groove, and the outer side wall of the sealing ring 14 abuts against the inner side wall of the second driving shaft 3, so that reliable sealing is formed between the adjusting rod 13 and the second driving shaft 3, and gas leakage can be effectively prevented. One end of the adjusting rod 13, which is far away from the cylinder 12, extends out of the second driving shaft 3 and is fixedly connected with the knob 15, so that the adjusting rod 13 can be conveniently rotated.

In practical products, the first driving shaft 2a and the second driving shaft 3 form a seal with the shell 1 through the 0-shaped ring.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The air inlet flow adjusting mechanism of the burner comprises a driving mechanism and a shell (1) with an air channel (1a) and a gas channel (1b), wherein a first air door component (2) and a second air door component are respectively arranged in the air channel (1a) and the gas channel (1b), the first air door component (2) comprises a first driving shaft (2a) with the outer end extending out of the shell (1), the second air door component comprises a second driving shaft (3) with the outer end extending out of the shell (1), it is characterized in that the driving mechanism can drive the first driving shaft (2a) and the second driving shaft (3) to rotate simultaneously so as to control the opening degree of the first air door component (2) and the second air door component, the driving mechanism comprises a rotary driving source (4) provided with a rotating shaft (4a), the length of the rotating shaft (4a) extends along the axial direction of the air channel (1a), the rotating shaft (4a) is connected with the second driving shaft (3) through a second connecting rod mechanism (6); the rotating shaft (4a) is further fixedly provided with a support (7), the support (7) is provided with an arc surface (7a) coaxial with the rotating shaft (4a), the arc surface (7a) is obliquely arranged, one side of the arc surface (7a) is provided with a rod body (8), one side of the rod body (8) is rotatably provided with a roller (9), a spring (10) enabling the roller (9) to have a trend of pressing on the arc surface (7a) is arranged between the rod body (8) and the shell (1), one end of the rod body (8) is hinged to the shell (1) through a support shaft (11), the axes of the support shaft (11) and the rotating shaft (4a) are perpendicular, and the other end of the rod body (8) is connected with a first drive shaft (2a) through a first connecting rod mechanism (5).

2. The intake air flow adjusting mechanism of the burner as claimed in claim 1, wherein the gas channel (1b) comprises an inlet (1b1), an outlet (1b2) and an air cavity (1b3) for communicating the inlet (1b1) with the outlet (1b2), the air cavity (1b3) and the second drive shaft (3) are coaxially arranged, the inlet (1b1) and the outlet (1b2) are both arranged on the side wall of the air cavity (1b3), the inner side wall of the air cavity (1b3) is a circumferential surface, the inner end of the second drive shaft (3) is provided with an arc piece (3a) the shape and size of which are both matched with the inner side wall of the air cavity (1b3), the outer side wall of the arc piece (3a) is attached to the inner side wall of the air cavity (1b3), and the inlet (1b1) and the outlet (1b2) can be controlled by rotating the arc piece (3 a).

3. The intake air flow adjusting mechanism for a burner of claim 2, wherein the inlet (1b1) and the outlet (1b2) are opposite, the circular arc pieces (3a) are provided with two pieces and are uniformly distributed along the circumference of the air chamber (1b3), and the two circular arc pieces (3a) can respectively block the inlet (1b1) and the outlet (1b 2).

4. The intake air flow adjusting mechanism of the burner as claimed in claim 3, wherein a cylinder (12) is arranged between the two circular arc pieces (3a), wherein two sides of the cylinder (12) are attached to the inner side wall of the air cavity (1b3), the other two sides of the cylinder (12) are respectively matched with the two circular arc pieces (3a) in a plane, the second driving shaft (3) is hollow, an adjusting rod (13) is arranged in the second driving shaft (3), one end of the adjusting rod (13) is in threaded connection with the second driving shaft (3), the other end of the adjusting rod (13) extends out of the second driving shaft (3) and is in threaded connection with the cylinder (12), and a seal is formed between the side wall of the adjusting rod (13) and the inner wall of the second driving shaft (.

5. The intake air flow adjusting mechanism of a burner as claimed in claim 4, wherein the inner side wall of the cylinder (12) is integrally formed with a connecting base (12a), the connecting base (12a) is provided with a threaded hole axially penetrating the second driving shaft (3), and the adjusting rod (13) is screwed in the threaded hole.

6. The intake air flow adjusting mechanism of the burner as claimed in claim 4 or 5, wherein the side wall of the adjusting rod (13) is provided with an annular groove coaxially arranged with the adjusting rod (13), a sealing ring (14) is arranged in the annular groove, and the outer side wall of the sealing ring (14) is abutted against the inner side wall of the second driving shaft (3).

7. The burner inlet flow adjustment mechanism of claim 4, wherein the end of the adjustment lever (13) remote from the cylinder (12) extends beyond the second drive shaft (3) and is fixedly connected to the knob (15).