A multi-channel burner for rotary kiln

Abstract

The utility model discloses a multi-channel burner for a rotary kiln, which relates to the technical field of burners and comprises an air supply pipe, the cross section of the air supply pipe is rectangular, a filter screen is fixedly installed on the left end of the air supply pipe, a plurality of sticky plate components are arranged inside the air supply pipe, the plurality of sticky plate components are evenly arranged from top to bottom, the sticky plate components comprise a pair of first sticky plates, a second sticky plate is arranged between the pair of first sticky plates, and the utility model air passes through the plurality of sticky plate components arranged up and down, the plurality of first sticky plates and second sticky plates, so that narrow air circulation channels are formed between the first sticky plates and the second sticky plates, and between the first sticky plates and the first sticky plates, and impurities can more effectively contact the first sticky plates or the second sticky plates during the movement of the air, thereby improving the air cleaning effect.

Description

Technical Field

[0001] The utility model relates to the technical field of burners, in particular to a multi-channel burner for a rotary kiln. Background Art

[0002] Multi-channel burners are core combustion equipment widely used in industrial furnaces such as boilers, decomposition furnaces, heating furnaces, rotary kilns, etc. Their function is to make coal powder burn initially under the transportation and combustion assistance of primary air, and then fully burn and release heat under the combustion assistance of secondary air.

[0003] A Chinese patent (publication number: CN209622764U) discloses a multi-channel burner in the field of burner technology. The multi-channel burner comprises a burner channel tube, a combustion head, an air coal pipe and an air supply device, wherein the air supply device comprises an air supply tube, an inner air pipe and an outer air pipe, one end of the air supply tube is an air inlet end, and the other end is connected to the inner air pipe and the outer air pipe, the outer wall of the burner channel is coaxially sleeved with the inner air pipe, the air coal pipe and the outer air pipe in sequence from the inside to the outside, the end of the burner channel tube extends out of the inner air pipe and is provided with a combustion head; the air supply tube is provided with a filter assembly and an adjustment assembly, the adjustment assembly comprises a plurality of baffles arranged in the cavity of the air supply tube, two adjacent baffles are arranged in opposite directions and inclined, and the length of the baffles is smaller than the inner diameter of the air supply tube; the filter assembly comprises a primary filter element arranged at the air inlet end of the air supply tube, and also comprises a secondary filter element arranged in the air supply tube; the utility model has the advantage of filtering dust and ensuring sufficient combustion, but when the air flows in the air supply tube, part of the air flows along the gap between the baffle and the air supply tube, and the double-sided adhesive is difficult to act on this part of the air, so that the impurities in this part of the air flow into the igniter, and the purification effect is poor.

[0004] In order to solve the above problems, we have made improvements and proposed a multi-channel burner for a rotary kiln. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model provides a multi-channel burner for a rotary kiln, comprising an air supply pipe, the cross section of the air supply pipe is rectangular, a filter screen is fixedly installed on the left end of the air supply pipe, a plurality of groups of sticky plate assemblies are arranged inside the air supply pipe, the plurality of groups of sticky plate assemblies are evenly arranged from top to bottom, the sticky plate assemblies include a pair of first sticky plates, and a second sticky plate is arranged between the pair of the first sticky plates.

[0007] As a preferred technical solution of the utility model, a mounting shaft is fixedly connected to the middle of the first adhesive plate, and the mounting shaft is rotatably connected to the inside of the air supply pipe, and the second adhesive plate is fixedly installed inside the air supply pipe.

[0008] As a preferred technical solution of the utility model, the front end of the mounting shaft is fixedly connected with a notched gear, and the tooth pressure directions of the two notched gears in the same adhesive plate assembly are opposite, and the outer side of the notched gear is meshingly connected with a rack.

[0009] As a preferred technical solution of the utility model, a connecting block is fixedly connected to the outer side of the rack on the same side, and a limiting frame is slidably connected to the outer side of the connecting block, and the limiting frame is fixedly connected to the outer side of the air supply pipe.

[0010] As a preferred technical solution of the utility model, a nut is fixedly connected to the side of the connecting block away from the rack, a lead screw is connected to the internal thread of the nut, and the lead screw is rotatably connected to the outside of the air supply pipe, and the top end of the lead screw is fixedly connected to the motor, and the motor is fixedly installed on the outside of the air supply pipe.

[0011] As a preferred technical solution of the utility model, a slide groove is provided at the top of the connecting block, a limit block is slidably connected inside the slide groove, and the limit block is fixedly connected to the inner side of the limit frame.

[0012] As a preferred technical solution of the utility model, a movable groove is opened on one side of the limiting frame, and the connecting rod between the nut and the connecting block is arranged in the movable groove.

[0013] The beneficial effects of the utility model are:

[0014] 1. In the utility model, air passes through multiple groups of sticky plate assemblies arranged up and down, multiple groups of first sticky plates and second sticky plates, so that narrow air circulation channels are formed between the first sticky plates and the second sticky plates, and between the first sticky plates. In the process of impurities moving with the air, they can contact the first sticky plate or the second sticky plate more effectively, thereby improving the air cleaning effect.

[0015] 2. In the utility model, the motor drives the lead screw to rotate, and the rotating lead screw drives the nut. Since the thread directions of the two lead screws are opposite, the nuts on both sides move in opposite directions, the nut on the left moves downward, and the nut on the right moves upward, so that the lower notched gear in the same group rotates counterclockwise, and the lower notched gear rotates clockwise, thereby making the two first sticking plates in the same group open at the left end and tend to close at the right end, and the left end of the top first sticking plate abuts against the top wall of the air supply pipe, the left end of the bottom first sticking plate abuts against the bottom wall of the air supply pipe, and the left ends of the two adjacent first sticking plates abut against each other. When air passes through the sticking plate assembly, the flowing air will hit the first sticking plates, so that impurities are better adhered, further improving the air cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 The utility model Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 It is a cross-sectional view of the air supply pipe of the utility model;

[0020] Figure 4 It is a schematic diagram of the limit frame of the utility model;

[0021] In the figure: 1. air supply duct; 2. filter screen; 3. motor; 4. lead screw; 5. nut; 6. limit frame; 7. connecting block; 8. rack; 9. notched gear; 10. mounting shaft; 11. first adhesive plate; 12. second adhesive plate; 13. limit block; 14. slide groove; 15. movable groove. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0023] Example: Figure 1-4 As shown, a multi-channel burner for a rotary kiln includes an air supply pipe 1, the cross section of the air supply pipe 1 is rectangular, a filter screen 2 is fixedly installed at the left end of the air supply pipe 1, a plurality of adhesive plate assemblies are arranged inside the air supply pipe 1, and the plurality of adhesive plate assemblies are evenly arranged from top to bottom, the adhesive plate assemblies include a pair of first adhesive plates 11, a second adhesive plate 12 is arranged between the pair of first adhesive plates 11, double-sided tape is arranged on both sides of the first adhesive plate 11 and the second adhesive plate 12, impurities are adhered by glue, and the front and rear ends of the first adhesive plate 11 and the second adhesive plate 12 are both in contact with the inner wall of the air supply pipe 1;

[0024] After the air enters the air supply duct 1, most of the impurities are first filtered out by the filter 2. The air that has been preliminarily purified flows along the air supply duct 1, passes through multiple groups of adhesive plate assemblies arranged up and down, multiple groups of first adhesive plates 11 and second adhesive plates 12, so that narrow air circulation channels are formed between the first adhesive plates 11 and the second adhesive plates 12, and between the first adhesive plates 11 and the first adhesive plates 11. In the process of impurities moving with the air, they can more effectively contact the first adhesive plate 11 or the second adhesive plate 12, thereby improving the air cleaning effect.

[0025] Specifically, Figure 1 , Figure 2 and Figure 3 As shown, the middle part of the first adhesive plate 11 is fixedly connected with the installation shaft 10, and the installation shaft 10 is rotatably connected to the inside of the air supply pipe 1, the second adhesive plate 12 is fixedly installed in the inside of the air supply pipe 1, the front end of the installation shaft 10 is fixedly connected with the notched gear 9, and the tooth pressure of the two notched gears 9 in the same adhesive plate assembly is in opposite directions, the outer side of the notched gear 9 is meshedly connected with the rack 8, the outer side of the rack 8 on the same side is fixedly connected with the connecting block 7, the outer side of the connecting block 7 is slidably connected with the limiting frame 6, and the limiting frame 6 is fixedly connected to the air supply pipe 1. On the outside, a nut 5 is fixedly connected to one side of the connecting block 7 away from the rack 8, a lead screw 4 is connected to the inner thread of the nut 5, and the lead screw 4 is rotatably connected to the outside of the air supply pipe 1, a motor 3 is fixedly connected to the top of the lead screw 4, and the motor 3 is fixedly installed on the outside of the air supply pipe 1, the thread directions of the lead screws 4 on both sides are opposite, the specifications of the motors 3 on both sides are the same, the first adhesive plate 11 is thicker than the second adhesive plate 12, so that when the left ends of two adjacent first adhesive plates 11 are against each other, there is still a gap between the right ends of the first adhesive plate 11 and the second adhesive plate 12;

[0026] The motor 3 drives the lead screw 4 to rotate, and the rotating lead screw 4 drives the nut 5. Since the thread directions of the two lead screws 4 are opposite, the nuts 5 on both sides move in opposite directions, the nut 5 on the left moves downward, and the nut 5 on the right moves upward, so that the lower notched gear 9 in the same group rotates counterclockwise, and the lower notched gear 9 rotates clockwise, thereby making the two first adhesive plates 11 in the same group open at the left end and tend to close at the right end, and the left end of the top first adhesive plate 11 abuts against the top wall of the air supply pipe 1, and the left end of the bottom first adhesive plate 11 abuts against the bottom wall of the air supply pipe 1, and the left ends of the two adjacent first adhesive plates 11 abut against each other. When air passes through the adhesive plate assembly, the flowing air will hit the first adhesive plate 11, so that impurities are better adhered, and the flow area of ​​the air supply pipe 1 is changed, so that the air supply efficiency of the air supply pipe 1 can be adjusted.

[0027] Specifically, Figure 4 As shown, a slide groove 14 is provided at the top of the connecting block 7, and the inner sliding connection of the slide groove 14 is connected to the limit block 13, and the limit block 13 is fixedly connected to the inner side of the limit frame 6. The limit block 13 slides in the slide groove 14 to further limit the connecting block 7, so that the movement of the connecting block 7 is more stable.

[0028] Specifically, Figure 4 As shown, a movable groove 15 is opened on one side of the limiting frame 6, and the connecting rod between the nut 5 and the connecting block 7 is arranged in the movable groove 15. The length of the movable groove 15 is the same as the length of the rack 8, which is used to cooperate with the movement of the rack 8 and the connecting block 7.

[0029] Working principle: After the air enters the air supply pipe 1, most of the impurities are first filtered by the filter 2. The preliminarily purified air flows along the air supply pipe 1, passes through multiple groups of adhesive plate components arranged up and down, multiple groups of first adhesive plates 11 and second adhesive plates 12, so that narrow air flow channels are formed between the first adhesive plates 11 and the second adhesive plates 12, and between the first adhesive plates 11 and the first adhesive plates 11. In the process of impurities moving with the air, they can more effectively contact the first adhesive plate 11 or the second adhesive plate 12, thereby improving the air cleaning effect;

[0030] To further increase the cleaning effect of impurities, the motor 3 drives the screw 4 to rotate, and the rotating screw 4 drives the nut 5. Since the thread directions of the two screws 4 are opposite, the nuts 5 on both sides move in opposite directions, the nut 5 on the left goes down, and the nut 5 on the right goes up, so that the lower notched gear 9 in the same group rotates counterclockwise, and the lower notched gear 9 rotates clockwise, thereby making the two first adhesive plates 11 in the same group open at the left end and tend to close at the right end, and the left end of the top first adhesive plate 11 is against the top wall of the air supply pipe 1, and the left end of the bottom first adhesive plate 11 is against the bottom wall of the air supply pipe 1, and the left ends of the two adjacent first adhesive plates 11 are against each other. When air passes through the adhesive plate assembly, the flowing air will hit the first adhesive plate 11, so that impurities are better adhered, and the flow area of ​​the air supply pipe 1 is changed, so that the air supply efficiency of the air supply pipe 1 can be adjusted.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A multi-channel burner for a rotary kiln, comprising an air supply pipe (1), characterized in that: The cross section of the air supply pipe (1) is rectangular, a filter screen (2) is fixedly installed at the left end of the air supply pipe (1), a plurality of groups of adhesive plate assemblies are arranged inside the air supply pipe (1), and the plurality of groups of adhesive plate assemblies are evenly arranged from top to bottom, and the adhesive plate assemblies include a pair of first adhesive plates (11), and a second adhesive plate (12) is arranged between the pair of first adhesive plates (11).

2. A multi-channel burner for a rotary kiln according to claim 1, characterized in that: A mounting shaft (10) is fixedly connected to the middle of the first adhesive plate (11), and the mounting shaft (10) is rotatably connected to the inside of the air supply pipe (1), and the second adhesive plate (12) is fixedly installed inside the air supply pipe (1).

3. A multi-channel burner for a rotary kiln according to claim 2, characterized in that: The front end of the installation shaft (10) is fixedly connected to a notched gear (9), and the tooth pressure directions of the two notched gears (9) in the same adhesive plate assembly are opposite, and the outer side of the notched gear (9) is meshingly connected to a rack (8).

4. A multi-channel burner for a rotary kiln according to claim 3, characterized in that: The outer side of the rack (8) on the same side is fixedly connected to a connecting block (7), the outer side of the connecting block (7) is slidably connected to a limiting frame (6), and the limiting frame (6) is fixedly connected to the outer side of the air supply pipe (1).

5. A multi-channel burner for a rotary kiln according to claim 4, characterized in that: A nut (5) is fixedly connected to the side of the connection block (7) away from the rack (8); the internal thread of the nut (5) is connected to a lead screw (4), and the lead screw (4) is rotatably connected to the outside of the air supply pipe (1); the top end of the lead screw (4) is fixedly connected to an electric motor (3), and the electric motor (3) is fixedly installed on the outside of the air supply pipe (1).

6. A multi-channel burner for a rotary kiln according to claim 4, characterized in that: A sliding groove (14) is provided at the top of the connecting block (7), and a limiting block (13) is slidably connected inside the sliding groove (14), and the limiting block (13) is fixedly connected to the inner side of the limiting frame (6).

7. A multi-channel burner for a rotary kiln according to claim 4, characterized in that: A movable groove (15) is provided on one side of the limiting frame (6), and a connecting rod between the nut (5) and the connecting block (7) is arranged in the movable groove (15).

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