Ash removal device of air preheater

Abstract

The utility model belongs to the technical field of ash removal devices, and particularly relates to an air preheater ash removal device which comprises a connecting rod, a driving mechanism and a plurality of adjustable comb teeth, and the plurality of adjustable comb teeth are fixed on the connecting rod at intervals. A moving part of the driving mechanism is fixedly connected with the connecting rod, and the connecting rod and the adjustable comb teeth on the connecting rod are driven by the driving mechanism to move front and back; the adjustable comb teeth comprise a fixed comb tooth plate and a movable comb tooth plate, the movable comb tooth plate is connected with the fixed comb tooth plate in a sliding mode, a distance adjusting mechanism is arranged between the movable comb tooth plate and the fixed comb tooth plate, and the distance between the movable comb tooth plate and the fixed comb tooth plate is adjusted through the distance adjusting mechanism. The fixed comb plate is fixedly connected with a sliding block connected with the connecting rod, the sliding block is connected with the connecting rod in a sliding mode, and a fixed jackscrew is arranged on the sliding block. And through adjustment of the distance adjusting mechanism, the device can adapt to air preheaters with different pipeline distances.

Description

Technical Field

[0001] The utility model belongs to the technical field of dust cleaning devices, and particularly relates to a dust cleaning device for an air preheater. Background Art

[0002] An air preheater is a device used to improve the thermal efficiency of a boiler. It transfers heat from the flue gas at the tail of the boiler to the cold air before it enters the boiler, thereby reducing fuel consumption and flue gas emissions during the combustion process and improving the thermal efficiency of the boiler.

[0003] Current air preheaters require cleaning, primarily through a movable comb structure. Patent application number 202223209479.9 discloses an air preheater cleaning comb and its cleaning device. The comb comprises a first comb bar and a second comb bar, which are connected by a connecting piece, forming a U-shaped structure to ensure a good fit with the pipeline. Furthermore, the connecting piece is V-shaped and has a certain amount of deformation, further ensuring fit with the pipeline. Furthermore, when encountering hard objects, the deformation prevents unnecessary damage to the pipeline.

[0004] There is a certain amount of deformation between the first comb teeth bar and the second comb teeth bar, but it does not have spacing adjustment and cannot adapt to the use of air preheaters with different pipe spacing; moreover, there is a lack of support between the first comb teeth bar and the second comb teeth bar, and deformation is likely to occur after long-term use, resulting in reduced cleaning effect. Utility Model Content

[0005] In response to the above technical problems, the utility model provides an air preheater dust cleaning device, the comb teeth of the device are adjusted according to needs, and the middle part of the comb teeth is supported by an adjusting mechanism.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] An air preheater dust cleaning device includes a connecting rod, a driving mechanism, and adjustable comb teeth. The adjustable comb teeth are provided in a plurality of manners and fixed to the connecting rod at intervals. The moving portion of the driving mechanism is fixedly connected to the connecting rod, and the driving mechanism drives the connecting rod and the plurality of adjustable comb teeth thereon to move forward and backward.

[0008] The adjustable comb teeth include a fixed comb tooth plate and a movable comb tooth plate, the movable comb tooth plate is slidably connected to the fixed comb tooth plate, and a spacing adjustment mechanism is provided between the movable comb tooth plate and the fixed comb tooth plate, and the distance between the movable comb tooth plate and the fixed comb tooth plate is adjusted by the spacing adjustment mechanism; a slider connected to the connecting rod is fixedly connected to the fixed comb tooth plate, the slider is slidably connected to the connecting rod, and a fixed top screw is provided on the slider.

[0009] The upper and lower ends of the fixed comb plate and the movable comb plate are respectively slidably connected by a connecting assembly, and the connecting assembly includes a connecting slider and a fixing nut. The fixed comb plate and the movable comb plate are provided with a sliding groove that is slidably connected to the connecting slider. The connecting slider passes through the sliding groove and is threadedly connected to the fixing nut, and a corresponding threaded step is provided on the connecting slider.

[0010] The spacing adjustment mechanism includes an adjusting rod and a fixing ring. An adjusting bolt is connected to a connecting slider in the upper connecting assembly through a threaded through hole. The upper end of the adjusting rod is rotatably connected to the lower end of the adjusting bolt; the fixing ring is fixedly connected to the adjusting rod; the fixing ring is connected to the fixed comb plate through a first connecting rod, and the fixing ring is connected to the movable comb plate through a second connecting rod.

[0011] A guide hole is provided at the lower end of the adjusting rod, and a connecting column slidably connected to the guide hole is fixed on a connecting slider in a connecting assembly located below.

[0012] The shape of the sliding groove is rectangular or waist-shaped; the shape of the connecting slider is rectangular or waist-shaped.

[0013] There are at least two fixed rings, and each fixed ring is connected to the fixed comb plate and the movable comb plate through a first connecting rod and a second connecting rod respectively.

[0014] The shapes of the fixed comb plate and the movable comb plate are both "[" shapes.

[0015] The driving mechanism adopts an electric telescopic cylinder.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The spacing adjustment mechanism adjusts the distance between the movable and fixed comb plates to accommodate air preheaters with varying pipe spacing. Furthermore, the fixed ring, first connecting rod, and second connecting rod in the spacing adjustment mechanism not only provide adjustment but also connect the fixed and movable comb plates in the middle, providing support and preventing deformation of the middle portion from long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle;

[0020] Figure 3 It is the main view of the utility model;

[0021] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle;

[0022] Figure 5 yes Figure 3 A partial enlarged view of point C in the middle;

[0023] Figure 6 It is a structural diagram of the connecting column of the utility model;

[0024] Figure 7 yes Figure 6 A partial enlarged view of point D in the middle;

[0025] Figure 8 It is a structural diagram of the connection assembly of the utility model;

[0026] Figure 9 This is a schematic diagram of the connection structure between the slider and the chute of the utility model;

[0027] Among them: 1 is a connecting rod, 2 is a driving mechanism, 3 is an adjustable comb, 4 is a fixed comb plate, 5 is a movable comb plate, 6 is a spacing adjustment mechanism, 7 is a slider, 8 is a fixed top screw, 9 is a connecting assembly, 10 is a connecting slider, 11 is a fixing nut, 12 is a slide groove, 13 is a threaded step, 14 is an adjusting rod, 15 is a fixing ring, 16 is an adjusting bolt, 17 is a first connecting rod, 18 is a second connecting rod, 19 is a guide hole, and 20 is a connecting column. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0029] like Figure 1-9 The figure shows an air preheater dust cleaning device, comprising a connecting rod 1, a drive mechanism 2, and adjustable comb teeth 3. The adjustable comb teeth 3 are provided and fixed to the connecting rod 1 at intervals. The movable portion of the drive mechanism 2 is fixedly connected to the connecting rod 1, and the drive mechanism 2 drives the connecting rod 1 and the adjustable comb teeth 3 thereon to move back and forth, thereby cleaning the air preheater. During installation, the adjustable comb teeth 3 are positioned in the gaps between the air preheater pipes.

[0030] Specifically: the adjustable comb teeth 3 include a fixed comb tooth plate 4 and a movable comb tooth plate 5, the movable comb tooth plate 5 is slidably connected to the fixed comb tooth plate 4, and a spacing adjustment mechanism 6 is provided between the movable comb tooth plate 5 and the fixed comb tooth plate 4. The distance between the movable comb tooth plate 5 and the fixed comb tooth plate 4 is adjusted by the spacing adjustment mechanism 6, so as to adapt to the use of air preheaters with different pipe spacing.

[0031] A slider 7 connected to the connecting rod 1 is fixedly connected to the fixed comb plate 4. The slider 7 is slidably connected to the connecting rod 1. The slider 7 is connected to a fixed top screw 8 through a threaded through hole. By tightening the fixed top screw 8, the end of the fixed top screw 8 passes through the slider 7 and abuts against the connecting rod 1, thereby playing a fixing role.

[0032] Furthermore, the upper and lower ends of the fixed comb plate 4 and the movable comb plate 5 are respectively slidably connected by a connecting assembly 9, which includes a connecting slider 10 and a fixing nut 11. The fixed comb plate 4 and the movable comb plate 5 are provided with a slide groove 12 that is slidably connected to the connecting slider 10. The connecting slider 10 passes through the slide groove 12 and is threadedly connected to the fixing nut 11. The connecting slider 10 is provided with a corresponding thread step 13. Due to the structural setting of the thread step 13, after the fixing nut 11 is tightened, an "I"-shaped structure is formed between the connecting slider 10 and the fixing nut 11, and there is a gap between the connecting slider 10 and the fixed comb plate 4 and the movable comb plate 5, that is, it will not hinder the sliding between the fixed comb plate 4 and the movable comb plate 5.

[0033] Furthermore, the spacing adjustment mechanism 6 includes an adjusting rod 14 and a fixing ring 15. An adjusting bolt 16 is connected to the connecting slider 10 in the upper connecting assembly 9 through a threaded through hole. The upper end of the adjusting rod 14 is rotatably connected to the lower end of the adjusting bolt 16; the fixing ring 15 is fixedly connected to the adjusting rod 14.

[0034] The fixed ring 15 is connected to the fixed comb plate 4 through a first connecting rod 17, and the two ends of the first connecting rod 17 are hinged to the fixed ring 15 and the fixed comb plate 4 respectively; the fixed ring 15 is connected to the movable comb plate 5 through a second connecting rod 18, and the two ends of the second connecting rod 18 are hinged to the fixed ring 15 and the movable comb plate 5 respectively.

[0035] By rotating the adjusting bolt 16, the adjusting bolt 16 moves up and down along the connecting slider 10, thereby driving the adjusting rod 14 connected thereto to move up and down, and pulling / pushing the movable comb plate 5 to move through the first connecting rod 1 and the second connecting rod 1, thereby changing the interval between the movable comb plate 5 and the fixed comb plate 4.

[0036] Furthermore, a guide hole 19 is provided at the lower end of the adjustment rod 14. A connecting post 20 is fixed to the connecting slider 10 in the connecting assembly 9 below, and is slidably connected to the guide hole 19. When the adjustment rod 14 moves up and down, the connecting post 20 slides between the guide hole 19, providing support for the lower end of the adjustment rod 14 and preventing it from shaking.

[0037] Furthermore, the shape of the above-mentioned chute 12 is rectangular or waist-shaped; the shape of the connecting slider 10 is rectangular or waist-shaped, that is, the connecting slider 10 can only move relative to the chute 12 but cannot rotate.

[0038] Furthermore, at least two fixing rings 15 are provided, and each fixing ring 15 is connected to the fixed comb plate 4 and the movable comb plate 5 through a first connecting rod 17 and a second connecting rod 18. That is, a plurality of fixing rings 15 are provided to provide better support for the middle part of the fixed comb plate 4 and the movable comb plate 5.

[0039] Furthermore, the fixed comb plate 4 and the movable comb plate 5 are both shaped like a “[”.

[0040] Furthermore, the driving mechanism 2 adopts an electric telescopic cylinder, whose piston rod (moving part) is fixedly connected to the connecting rod 1.

[0041] Only the preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the above embodiments.

Claims

1. An air preheater dust cleaning device, characterized in that: It comprises a connecting rod (1), a driving mechanism (2) and adjustable comb teeth (3), wherein a plurality of the adjustable comb teeth (3) are provided and the plurality of adjustable comb teeth (3) are fixed on the connecting rod (1) at intervals; a moving portion of the driving mechanism (2) is fixedly connected to the connecting rod (1), and the connecting rod (1) and the plurality of adjustable comb teeth (3) thereon are driven to move forward and backward by the driving mechanism (2); The adjustable comb teeth (3) include a fixed comb tooth plate (4) and a movable comb tooth plate (5), the movable comb tooth plate (5) is slidably connected to the fixed comb tooth plate (4), a spacing adjustment mechanism (6) is provided between the movable comb tooth plate (5) and the fixed comb tooth plate (4), and the distance between the movable comb tooth plate (5) and the fixed comb tooth plate (4) is adjusted by the spacing adjustment mechanism (6); a slider (7) connected to the connecting rod (1) is fixedly connected to the fixed comb tooth plate (4), the slider (7) is slidably connected to the connecting rod (1), and a fixed top screw (8) is provided on the slider (7).

2. The air preheater dust cleaning device according to claim 1, characterized in that: The upper and lower ends of the fixed comb plate (4) and the movable comb plate (5) are respectively slidably connected via a connecting assembly (9), wherein the connecting assembly (9) comprises a connecting slider (10) and a fixing nut (11), and the fixed comb plate (4) and the movable comb plate (5) are provided with a sliding groove (12) slidably connected to the connecting slider (10), and the connecting slider (10) passes through the sliding groove (12) and is threadedly connected to the fixing nut (11), and a corresponding threaded step (13) is provided on the connecting slider (10).

3. The air preheater dust cleaning device according to claim 2, characterized in that: The spacing adjustment mechanism (6) includes an adjustment rod (14) and a fixing ring (15); an adjustment bolt (16) is connected to a connecting slider (10) in the upper connecting assembly (9) via a threaded through hole; the upper end of the adjustment rod (14) is rotatably connected to the lower end of the adjustment bolt (16); the fixing ring (15) is fixedly connected to the adjustment rod (14); the fixing ring (15) is connected to the fixed comb plate (4) via a first connecting rod (17); and the fixing ring (15) is connected to the movable comb plate (5) via a second connecting rod (18).

4. The air preheater dust cleaning device according to claim 3, characterized in that: A guide hole (19) is provided at the lower end of the adjusting rod (14), and a connecting column (20) slidably connected to the guide hole (19) is fixed on the connecting slider (10) in the connecting assembly (9) below.

5. The air preheater dust cleaning device according to claim 2, characterized in that: The shape of the sliding groove (12) is rectangular or waist-shaped; the shape of the connecting slider (10) is rectangular or waist-shaped.

6. The air preheater dust cleaning device according to claim 3, characterized in that: At least two fixed rings (15) are provided, and each fixed ring (15) is connected to the fixed comb plate (4) and the movable comb plate (5) via a first connecting rod (17) and a second connecting rod (18).

7. The air preheater dust cleaning device according to claim 1, characterized in that: The fixed comb plate (4) and the movable comb plate (5) are both in the shape of a "[" character.

8. The air preheater dust cleaning device according to claim 1, characterized in that: The driving mechanism (2) adopts an electric telescopic cylinder.

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