CN215372446U

CN215372446U - Air door adjusting device of pulverized coal burner

Info

Publication number: CN215372446U
Application number: CN202120312457.1U
Authority: CN
Inventors: 戴卫平
Original assignee: Jingjiang Jinti Machinery Technology Co ltd
Current assignee: Jingjiang Jinti Machinery Technology Co ltd
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-12-31
Anticipated expiration: 2031-02-04

Abstract

The utility model discloses an air door adjusting device of a pulverized coal burner, which comprises a combustion chamber, wherein one end of the combustion chamber is fixedly communicated with an outer sleeve, a central liner tube is fixedly arranged in the outer sleeve, a sealing partition plate is fixedly connected between the central liner tube and the outer sleeve, one end of the central liner tube, which is far away from the combustion chamber, is provided with a sealing end cover, a flame pipeline is horizontally arranged on the sealing end cover in a penetrating manner, one end of the flame pipeline is positioned in the central liner tube, the other end of the flame pipeline is provided with an igniter in a communicating manner, the top of the outer sleeve is fixedly communicated with a first air inlet tube, the first air inlet tube is provided with a first adjusting valve, the top of the central liner tube is fixedly communicated with a second air inlet tube, the second air inlet tube is provided with a second adjusting valve, and the first adjusting valve and the second adjusting valve are both positioned above the outer sleeve. The utility model not only can supply air accurately, but also can ensure more sufficient combustion, has good use effect and stable air door adjustment.

Description

Air door adjusting device of pulverized coal burner

Technical Field

The utility model relates to the technical field of pulverized coal burners, in particular to an air door adjusting device of a pulverized coal burner.

Background

Coal is a boiler fuel with abundant content and low cost, and the combustion method which is most widely applied at present belongs to a coal powder combustion technology, and is a method for grinding coal into fine powder and enabling the coal to be suspended and combusted in an open hearth.

And the air volume in the air door in the existing burner is difficult to control, sometimes the air inlet of the air door is not accurate enough, the pulverized coal cannot be ensured to be completely diffused, and the air door is easy to change due to shaking and collision after being adjusted, so that the air inlet effect is influenced.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a damper adjustment device for a pulverized coal burner, which solves the above problems of the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme:

an air door adjusting device of a pulverized coal burner comprises a combustion chamber, wherein one end of the combustion chamber is fixedly communicated with an outer sleeve, a central liner tube is fixedly arranged in the outer sleeve, a sealing partition plate is fixedly connected between the central liner tube and the outer sleeve, one end, far away from the combustion chamber, of the central liner tube is provided with a sealing end cover, the sealing end cover is horizontally provided with a flame pipeline in a penetrating manner, one end of the flame pipeline is positioned in the central liner tube, the other end of the flame pipeline is provided with an igniter in a communicating manner, the top of the outer sleeve is fixedly communicated with a first air inlet tube, the first air inlet tube is provided with a first adjusting valve, the top of the central liner tube is fixedly communicated with a second air inlet tube, the second air inlet tube is provided with a second adjusting valve, the first adjusting valve and the second adjusting valve are both positioned above the outer sleeve, and the first air inlet tube and the second air inlet tube are fixedly connected with a three-way pipe, the top of the three-way pipe is fixedly connected with an air inlet, a main adjusting valve is installed on the air inlet, a support frame is fixedly connected between the three-way pipe and the outer sleeve, spring pressing rods are movably connected to two sides of the support frame, connecting rods are hinged to the bottoms of the spring pressing rods, an arc-shaped pressing valve plate is hinged to one end of each connecting rod, a sliding block is fixedly connected to the bottom of the arc-shaped pressing valve plate, and a sliding groove matched with the sliding block is horizontally formed in the outer sleeve.

Preferably, an annular groove is formed in one side, close to the combustion chamber, of the inner portion of the outer sleeve, and a rotational flow blade is embedded in the annular groove.

Preferably, the pipe diameter of the first air inlet pipe is equal to that of the second air inlet pipe.

Preferably, the outer surface of the sealing end cover is provided with external threads, and the inner surface of the central liner pipe is provided with internal threads matched with the external threads.

Preferably, the length of the flame tube is less than the length of the central liner.

Preferably, the combustion chamber is made of metal materials, and a flame-retardant heat-insulating layer is arranged in the combustion chamber.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the first air inlet pipe and the second air inlet pipe are arranged, so that air can be respectively fed from different positions, and the two air inlet pipes can feed air simultaneously, so that the air quantity of the air door is increased, not only can accurate air supply be realized, but also the combustion can be more sufficient, and the using effect is good;

2. the utility model is also provided with the spring compression bar and the arc-shaped compression valve plate, so that the air inlet pipe can be compressed and limited after the valves on the two air inlet pipes are adjusted, the air door is prevented from being loosened and influenced, and the air door is stably adjusted.

Drawings

FIG. 1 is a schematic view of a damper adjusting apparatus of a pulverized coal burner according to the present invention;

FIG. 2 is an enlarged view of a damper adjustment device of a pulverized coal burner of the present invention at A;

FIG. 3 is a schematic view showing the construction of a sealing partition plate in a damper adjusting apparatus for a pulverized coal burner according to the present invention.

In the figure: 1. a combustion chamber; 2. an outer sleeve; 3. a central liner tube; 4. sealing the partition plate; 5. sealing the end cap; 6. a flame duct; 7. an igniter; 8. a first air inlet pipe; 9. a first regulating valve; 10. a second air inlet pipe; 11. a second regulating valve; 12. a three-way pipe; 13. an air inlet; 14. a main regulator valve; 15. a support frame; 16. a spring compression bar; 17. a connecting rod; 18. an arc-shaped valve pressing plate; 19. a slider; 20. a chute.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution:

an air door adjusting device of a pulverized coal burner comprises a combustion chamber 1, one end of the combustion chamber 1 is fixedly communicated with an outer sleeve 2, a central liner tube 3 is fixedly arranged in the outer sleeve 2, a sealing partition plate 4 is fixedly connected between the central liner tube 3 and the outer sleeve 2, one end of the central liner tube 3, which is far away from the combustion chamber 1, is provided with a sealing end cover 5, a flame pipeline 6 is horizontally arranged on the sealing end cover 5 in a penetrating manner, one end of the flame pipeline 6 is positioned in the central liner tube 3, the other end of the flame pipeline 6 is provided with an igniter 7 in a communicating manner, the top of the outer sleeve 2 is fixedly communicated with a first air inlet tube 8, the first air inlet tube 8 is provided with a first adjusting valve 9, the top of the central liner tube 3 is fixedly communicated with a second air inlet tube 10, the second air inlet tube 10 is provided with a second adjusting valve 11, the first adjusting valve 9 and the second adjusting valve 11 are both positioned above the outer sleeve 2, the first air inlet tube 8 and the second air inlet tube 10 are fixedly connected with a three-way pipe 12, the top of the three-way pipe 12 is fixedly connected with an air inlet 13, a general regulating valve 14 is installed on the air inlet 13, a support frame 15 is fixedly connected between the three-way pipe 12 and the outer sleeve 2, spring compression rods 16 are movably connected to two sides of the support frame 15, connecting rods 17 are hinged to the bottoms of the spring compression rods 16, arc-shaped pressure valve plates 18 are hinged to one ends of the two connecting rods 17, sliding blocks 19 are fixedly connected to the bottoms of the arc-shaped pressure valve plates 18, sliding grooves 20 matched with the sliding blocks 19 are horizontally formed in the outer sleeve 2, after the first regulating valves 9 and the second regulating valves 11 on the two air inlet pipes are regulated, the arc-shaped pressure valve plates 18 are pushed by the spring compression rods 16 which are pressed downwards to compress and limit the air inlet, and the air door is prevented from being loosened and influenced.

An annular groove is formed in one side, close to the combustion chamber 1, of the inner portion of the outer sleeve 2, and a rotational flow blade is embedded in the annular groove.

The diameter of the first air inlet pipe 8 is equal to that of the second air inlet pipe 10.

The outer surface of the sealing end cover 5 is provided with an external thread, and the inner surface of the central liner tube 3 is provided with an internal thread matched with the external thread.

The length of the flame tube 6 is less than the length of the central liner 3.

The combustion chamber 1 is made of metal materials, and a flame-retardant heat-insulating layer is arranged in the combustion chamber 1.

The working principle is as follows: in the utility model, after the coal powder is filled into the combustion chamber 1, the igniter 7 is opened, the flame enters the combustion chamber 1 through the flame pipeline 6 to burn the coal powder, then the main regulating valve 14, the first regulating valve 9 and the second regulating valve 11 are opened according to requirements, the air can be respectively fed from air ports at different positions by opening the first regulating valve 9 on the first air inlet pipe 8 and the second regulating valve 11 on the second air inlet pipe 10, the air can be simultaneously fed by the two air inlet pipes, the air quantity of the air door is increased, not only the air can be accurately fed from the outer sleeve pipe 2 and the central liner pipe 3 respectively, but also the air quantity can be increased, the combustion is more sufficient, the use effect is good, meanwhile, the spring pressure rod 16 and the arc-shaped pressure valve plate 18 are additionally arranged, after the valve regulation is finished, the first regulating valve 9 and the second regulating valve 11 on the two air inlet pipes can be used for pushing the arc-shaped pressure valve plate 18 to be tightly limited by the spring pressure rod 16 which is pressed downwards, the size of avoiding the valve not hard up influence air door, the air door is adjusted stably.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A damper adjusting device of a pulverized coal burner, comprising a combustion chamber (1), characterized in that: the combustion chamber is characterized in that one end of the combustion chamber (1) is fixedly communicated with an outer sleeve (2), a central liner tube (3) is fixedly arranged in the outer sleeve (2), a sealing partition plate (4) is fixedly connected between the central liner tube (3) and the outer sleeve (2), one end, away from the combustion chamber (1), of the central liner tube (3) is provided with a sealing end cover (5), the sealing end cover (5) is horizontally provided with a flame pipeline (6) in a penetrating manner, one end of the flame pipeline (6) is located in the central liner tube (3), the other end of the flame pipeline (6) is provided with an igniter (7) in a communicating manner, the top of the outer sleeve (2) is fixedly communicated with a first air inlet pipe (8), a first regulating valve (9) is arranged on the first air inlet pipe (8), the top of the central liner tube (3) is fixedly communicated with a second air inlet pipe (10), and a second regulating valve (11) is arranged on the second air inlet pipe (10), first governing valve (9) and second governing valve (11) all are located outer tube (2) top, first air-supply line (8) and second air-supply line (10) fixedly connected with three-way pipe (12), three-way pipe (12) top fixedly connected with air intake (13), install general regulating valve (14) on air intake (13), fixedly connected with support frame (15) between three-way pipe (12) and outer tube (2), the equal swing joint in support frame (15) both sides has spring depression bar (16), spring depression bar (16) bottom articulates there is connecting rod (17), two connecting rod (17) one end all articulates there is arc pressure valve plate (18), arc pressure valve plate (18) bottom fixedly connected with slider (19), outer tube (2) are improved level and are seted up with slider (19) assorted spout (20).

2. The damper adjusting apparatus of a pulverized coal burner as set forth in claim 1, wherein: an annular groove is formed in one side, close to the combustion chamber (1), of the inner portion of the outer sleeve (2), and a rotational flow blade is embedded in the annular groove.

3. The damper adjusting apparatus of a pulverized coal burner as set forth in claim 1, wherein: the pipe diameter of the first air inlet pipe (8) is equal to that of the second air inlet pipe (10).

4. The damper adjusting apparatus of a pulverized coal burner as set forth in claim 1, wherein: the outer surface of the sealing end cover (5) is provided with external threads, and the inner surface of the central liner tube (3) is provided with internal threads matched with the external threads.

5. The damper adjusting apparatus of a pulverized coal burner as set forth in claim 1, wherein: the length of the flame pipe (6) is less than the length of the central liner (3).

6. The damper adjusting apparatus of a pulverized coal burner as set forth in claim 1, wherein: the combustion chamber (1) is made of metal materials, and a flame-retardant heat-insulating layer is arranged in the combustion chamber (1).