Ash collecting device for ash hopper of boiler economizer

Abstract

The utility model relates to the technical field of economizers, in particular to a boiler economizer ash bucket ash collecting device which comprises an ash bucket, an air inlet pipe is connected to the outer wall of the ash bucket, the air inlet pipe and the ash bucket are arranged in a tangent mode, a cleaning mechanism is arranged in the ash bucket, and a supporting ring is arranged on the inner wall of the ash bucket. The annular wall of the supporting ring is connected with a scraping plate, the scraping plate is attached to the inner wall of the ash bucket, the position, opposite to the air inlet pipe, of the scraping plate is connected with an air catching plate, and when smoke enters the ash bucket from the air inlet pipe, due to the fact that the air inlet pipe and the ash bucket are arranged in a tangent mode, the smoke entering the ash bucket is guided by the inner wall of the ash bucket to form airflow vortexes; when the air flow passes through the air catching plate, the air flow can generate pushing force on the air catching plate, so that the scraping plate connected with the air catching plate rotates, dust attached to the inner wall of the dust hopper can be conveniently scraped away in the rotating process, the situation that liquid and electric energy need to be consumed when the liquid is used for cleaning is avoided, and the purpose of saving cleaning cost is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of economizers, in particular to an ash collecting device for a boiler economizer ash hopper. Background Technique

[0002] The economizer is an important device in a large-scale coal-fired boiler. The economizer is installed at the lower part of the boiler tail flue to recover the waste heat of the exhausted flue gas. The economizer absorbs the heat of the high-temperature flue gas, reduces the exhaust temperature of the flue gas, and plays a role in saving energy and improving efficiency. It is found in actual use that due to structural reasons in the flow field of the economizer ash hopper of a large-scale coal-fired boiler, affected by the high-speed flue gas area, a large part of the ash flowing down from the upper part of the ash hopper is blown away by the high-speed flue gas and cannot fall into the lower ash hopper, resulting in poor ash removal effect of the ash hopper of the large-scale coal-fired boiler.

[0003] The prior art such as the publication number CN217482788U provides an ash collecting device for a boiler economizer ash hopper, including a box body and a protection mechanism. A support mechanism with a threaded connection sleeve is arranged on the box body, and an ash collecting mechanism with a threaded pipe is arranged on the box body. The support mechanism includes a threaded connection sleeve, a funnel, an ash collecting hopper, a top plate and an ash inlet pipe. The threaded connection sleeve is threadedly connected to the top of the box body. The circulating water pump is turned on to pump out the liquid in the water tank through a water pipe for dust reduction work. The dust follows the liquid and is filtered by a filter plate to reuse the liquid, effectively reducing the use cost, enhancing the environmental protection and practicality. The output shaft of the stepping motor drives the rotating shaft to rotate, and the scraper cleans the inner walls of the funnel, the ash collecting hopper and the discharge pipe. The threaded pipe and the threaded connection sleeve are screwed to separate the device structure, which is convenient for the staff to quickly overhaul and clean the device components, enhancing the convenience of the device and saving time and energy.

[0004] In this scheme, the circulating water pump is turned on for work, and the liquid in the water tank is pumped out through a water pipe to achieve dust reduction during the ash collection process. At the same time, during the work process, the dust follows the liquid and is filtered by the filter plate, and then the liquid can be reused, effectively reducing the use cost of the device and enhancing the environmental protection and practicality of the device. However, in actual use, since the air flow in the ash collecting hopper is always in a flowing state and the temperature of the passing air flow is relatively high, a large amount of the liquid in the water tank will be evaporated during use, which leads to the need to regularly supplement water, which is rather troublesome, and using electrical equipment as the driving force will greatly increase the use cost. In view of this, we propose an ash collecting device for a boiler economizer ash hopper. Content of the Utility Model

[0005] The purpose of the utility model is to provide an ash collecting device for a boiler economizer ash hopper. This ash collecting device for a boiler economizer ash hopper solves the problem that using liquid dust reduction will cause excessive evaporation of the liquid and large consumption.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] A dust collecting device for a boiler economizer ash hopper, including an ash hopper, an air inlet pipe is connected to the outer wall of the ash hopper, the air inlet pipe is tangentially arranged with the ash hopper, a cleaning mechanism is arranged inside the ash hopper, a support ring is arranged on the inner wall of the ash hopper, a scraping plate is connected to the ring wall of the support ring, and the scraping plate is attached to the inner wall of the ash hopper. A wind-catching plate is connected to the position of the scraping plate facing the air inlet pipe. When the flue gas enters the ash hopper from the air inlet pipe, due to the tangential arrangement of the air inlet pipe and the ash hopper, the incoming air forms an air flow vortex inside the ash hopper under the guidance of the inner wall of the ash hopper. When this air flow passes through the wind-catching plate, it will generate a driving force on the wind-catching plate, causing the scraping plate connected to the wind-catching plate to rotate, so as to conveniently scrape off the dust attached to the inner wall of the ash hopper during the rotation process, avoiding the situation of consuming liquid and electric energy when using liquid cleaning, and achieving the purpose of saving cleaning costs.

[0008] Preferably, a roller is rotatably connected to the top of the scraping plate, and the roller is in rolling connection with the top of the ash hopper. By setting the roller at the top of the scraping plate as a support, the support point can move by rolling, so as to reduce the resistance generated by the downward pressure of the weight of the scraping plate itself.

[0009] Preferably, T-shaped ring grooves are respectively opened above and below the air inlet pipe on the inner wall of the ash hopper, and a T-shaped sliding ring is slidably connected to the inner wall of the T-shaped ring groove, and the T-shaped sliding ring is connected to the scraping plate. By setting the T-shaped sliding ring to slide in the T-shaped ring groove, the scraping plate can be supported to improve the stability of the rotation of the scraping plate.

[0010] Preferably, a ceiling is arranged on the top of the ash hopper, and the ceiling is connected to the ash hopper through a support frame.

[0011] Preferably, a support ring is connected to the outer wall of the ash hopper, a support leg is connected to the bottom of the support ring, a funnel is connected to the bottom of the ash hopper, and an ash collecting box is placed below the funnel. The air flow entering the ash hopper slows down due to the increase in the space of the ash hopper, and the dust particles sink due to gravity. Under the guidance of the funnel, they fall into the ash collecting box for convenient centralized treatment.

[0012] Preferably, a sealing ring groove is opened at the bottom of the inner wall of the T-shaped ring groove, and a sealing ring is connected to the outer wall of the T-shaped sliding ring corresponding to the sealing ring groove. By pouring lubricating oil into the sealing ring groove, since the lubricating oil cannot pass through the gap between the sealing ring grooves of the sealing ring, the lubricating oil is always below the sealing ring, so that the lubricating oil will generate a lifting force on the sealing ring, and then cooperate with the rolling support of the roller above the scraping plate to greatly reduce the resistance generated by the downward pressure of the weight of the scraping plate itself, so as to ensure the smoothness of the rotation of the scraping plate.

[0013] Preferably, a bevel ring groove is provided at the bottom of the T-shaped ring groove, and the dust particles entering the T-shaped ring groove can be discharged through the provided bevel ring groove.

[0014] With the above technical solutions, the present utility model provides a dust collecting device for a boiler economizer ash hopper, which at least has the following beneficial effects:

[0015] First, when the flue gas of the present utility model enters the ash hopper from the inlet pipe, since the inlet pipe and the ash hopper are tangentially arranged, the incoming flue gas forms an air flow vortex inside the ash hopper under the guidance of the inner wall of the ash hopper. When this air flow passes through the wind-catching plate, it will generate a driving force on the wind-catching plate, causing the scraper connected to the wind-catching plate to rotate, so as to facilitate scraping off the dust adhering to the inner wall of the ash hopper during rotation, avoiding the situation of consuming liquid and electric energy when using liquid cleaning, and achieving the purpose of saving cleaning costs.

[0016] Second, by pouring lubricating oil into the sealing ring groove of the present utility model, since the lubricating oil cannot pass through the gap between the sealing rings of the sealing ring groove, the lubricating oil is always below the sealing ring, and the lubricating oil will generate a lifting force on the sealing ring. In cooperation with the rolling support method of the roller above the scraper, the resistance generated by the pressing of the weight of the scraper itself is greatly reduced to ensure the smoothness of the rotation of the scraper. Description of the Drawings

[0017] The drawings described herein are used to provide a further understanding of the present utility model and constitute a part of this application:

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

[0019] Figure 2 It is a partial cross-sectional view of the present utility model;

[0020] Figure 3 In the present utility model Figure 2 An enlarged view of A;

[0021] Figure 4 In the present utility model Figure 2 An enlarged view of B.

[0022] In the figure: 1. Ash hopper; 11. Inlet pipe; 12. Hopper; 2. Ceiling; 21. Support frame; 3. Support ring; 31. Support leg; 4. Ash collection box; 5. Cleaning mechanism; 51. Support ring; 52. Scraper; 53. Wind-catching plate; 54. Roller; 55. T-shaped ring groove; 56. T-shaped sliding ring; 57. Sealing ring groove; 58. Sealing ring; 59. Bevel ring groove. Detailed Embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment 1

[0025] A dust collection device for a boiler economizer ash hopper, as Figure 1 - Figure 4 shown, includes an ash hopper 1. An air inlet pipe 11 is connected to the outer wall of the ash hopper 1. The air inlet pipe 11 is tangentially arranged with the ash hopper 1. A cleaning mechanism 5 is arranged inside the ash hopper 1. A support ring 51 is arranged on the inner wall of the ash hopper 1. A scraper 52 is connected to the ring wall of the support ring 51, and the scraper 52 is attached to the inner wall of the ash hopper 1. A wind-catching plate 53 is connected to the position of the scraper 52 opposite to the air inlet pipe 11. When the flue gas enters the ash hopper 1 from the air inlet pipe 11, due to the tangential arrangement of the air inlet pipe 11 and the ash hopper 1, the incoming flue gas forms an air flow vortex inside the ash hopper 1 under the guidance of the inner wall of the ash hopper 1. When this air flow passes through the wind-catching plate 53, it will generate a driving force on the wind-catching plate 53, causing the scraper 52 connected to the wind-catching plate 53 to rotate, so as to facilitate scraping off the dust attached to the inner wall of the ash hopper 1 during the rotation process, avoiding the situation of consuming liquid and electric energy when using liquid cleaning, and achieving the purpose of saving cleaning costs. A roller 54 is rotatably connected to the top of the scraper 52, and the roller 54 is in rolling connection with the top of the ash hopper 1. By setting the roller 54 at the top of the scraper 52 as a support, the support point can move in a rolling manner, so as to reduce the resistance generated by the downward pressure of the weight of the scraper 52 itself. T-shaped ring grooves 55 are respectively opened above and below the air inlet pipe 11 on the inner wall of the ash hopper 1. A T-shaped sliding ring 56 is slidably connected to the inner wall of the T-shaped ring groove 55, and the T-shaped sliding ring 56 is connected to the scraper 52. By setting the T-shaped sliding ring 56 to slide in the T-shaped ring groove 55, the scraper 52 can be supported to improve the rotation stability of the scraper 52. A ceiling 2 is arranged on the top of the ash hopper 1, and the ceiling 2 is connected to the ash hopper 1 through a support frame 21.

[0026] In this embodiment, when the flue gas enters the hopper 1 from the inlet pipe 11, since the inlet pipe 11 is tangentially arranged with the hopper 1, the incoming gas forms an air flow vortex inside the hopper 1 under the guidance of the inner wall of the hopper 1. When this air flow passes through the wind-catching plate 53, it will generate a driving force on the wind-catching plate 53, causing the scraper 52 connected to the wind-catching plate 53 to rotate, so as to facilitate scraping off the dust adhering to the inner wall of the hopper 1 during the rotation process. By setting rollers 54 at the top of the scraper 52 as a support method, the support point can move by rolling, so as to reduce the resistance generated by the downward pressure of the weight of the scraper 52 itself. And by setting the T-shaped slip ring 56 to slide in the T-shaped ring groove 55, the scraper 52 can be supported to improve the stability of the rotation of the scraper 52.

[0027] Embodiment 2

[0028] As Figure 2 、 4 As shown, a support ring 3 is connected to the outer wall of the hopper 1, a support leg 31 is connected to the bottom of the support ring 3, a funnel 12 is connected to the bottom of the hopper 1, and a dust collection box 4 is placed below the funnel 12. The air flow entering the hopper 1 slows down due to the larger space of the hopper 1, and the dust particles sink due to gravity. Under the guidance of the funnel 12, they fall into the dust collection box 4 for convenient centralized treatment. A sealing ring groove 57 is opened at the bottom of the inner wall of the T-shaped ring groove 55, and a sealing ring 58 is connected to the outer wall of the T-shaped slip ring 56 corresponding to the position of the sealing ring groove 57. By pouring lubricating oil into the sealing ring groove 57, since the lubricating oil cannot pass through the gap between the sealing ring groove 57 and the sealing ring 58, the lubricating oil is always below the sealing ring 58, so that the lubricating oil will generate a lifting force on the sealing ring 58. In cooperation with the rolling support method of the roller 54 above the scraper 52, the resistance generated by the downward pressure of the weight of the scraper 52 itself is greatly reduced to ensure the smoothness of the rotation of the scraper 52. An inclined surface ring groove 59 is opened at the bottom of the T-shaped ring groove 55, and the dust particles entering the T-shaped ring groove 55 can be discharged through the opened inclined surface ring groove 59.

[0029] In this embodiment, the air flow entering the hopper 1 slows down due to the larger space of the hopper 1, and the dust particles sink due to gravity. Under the guidance of the funnel 12, they fall into the dust collection box 4 for convenient centralized treatment. By pouring lubricating oil into the sealing ring groove 57, since the lubricating oil cannot pass through the gap between the sealing ring groove 57 and the sealing ring 58, the lubricating oil is always below the sealing ring 58, so that the lubricating oil will generate a lifting force on the sealing ring 58. Combined with the rolling support method of the roller 54 above the scraper 52, the resistance generated by the downward pressure of the weight of the scraper 52 itself is greatly reduced to ensure the smoothness of the rotation of the scraper 52.

[0030] When the ash collection device of the economizer ash hopper of the present utility model is in use, when the flue gas enters the ash hopper 1 from the inlet pipe 11, since the inlet pipe 11 is tangentially arranged with the ash hopper 1, the entering flue gas forms an air flow vortex inside the ash hopper 1 under the guidance of the inner wall of the ash hopper 1. When this air flow passes through the air scoop plate 53, it will generate a driving force on the air scoop plate 53, causing the scraper 52 connected to the air scoop plate 53 to rotate, so as to facilitate scraping off the dust attached to the inner wall of the ash hopper 1 during the rotation. By setting the roller 54 at the top of the scraper 52 as a support, the support point can move in a rolling manner to reduce the resistance generated by the downward pressure of the weight of the scraper 52 itself. And by setting the T-shaped slip ring 56 to slide in the T-shaped ring groove 55, the scraper 52 can be supported to improve the stability of the rotation of the scraper 52. Moreover, since the lubricating oil cannot pass through the gap between the sealing ring groove 57 and the sealing ring 58, the lubricating oil is always below the sealing ring 58, so that the lubricating oil will generate a lifting force on the sealing ring 58. Coupled with the rolling support of the roller 54 above the scraper 52, the resistance generated by the downward pressure of the weight of the scraper 52 itself can be greatly reduced to ensure the smoothness of the rotation of the scraper 52. And the air flow entering the ash hopper 1, due to the increase in the space of the ash hopper 1, the air flow velocity slows down, so that the dust particles sink due to gravity. Under the guidance of the funnel 12, they fall into the ash collection box 4 for convenient centralized treatment.

[0031] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A dust collecting device for a boiler economizer ash hopper, comprising an ash hopper (1), characterized in that: An air inlet pipe (11) is connected to the outer wall of the ash hopper (1). The air inlet pipe (11) and the ash hopper (1) are arranged in a line. A cleaning mechanism (5) is arranged inside the ash hopper (1). A support ring (51) is arranged on the inner wall of the ash hopper (1). A scraping plate (52) is connected to the ring wall of the support ring (51), and the scraping plate (52) is in contact with the inner wall of the ash hopper (1). A wind-catching plate (53) is connected to the position of the scraping plate (52) corresponding to the air inlet pipe (11).

2. The ash hopper ash collection device for a boiler economizer according to claim 1, wherein: A roller (54) is rotatably connected to the top of the scraping plate (52), and the roller (54) is in rolling connection with the top of the ash hopper (1).

3. The ash collecting device for the economizer ash hopper of a boiler according to claim 1, characterized in that: T-shaped annular grooves (55) are respectively formed in the inner wall of the ash hopper (1) above and below the air inlet pipe (11). A T-shaped sliding ring (56) is slidably connected to the inner wall of the T-shaped annular groove (55), and the T-shaped sliding ring (56) is connected to the scraping plate (52).

4. A dust collecting device for a boiler economizer ash hopper according to claim 1, characterized in that: A ceiling (2) is arranged on the top of the ash hopper (1), and the ceiling (2) is connected to the ash hopper (1) through a support frame (21).

5. A dust collecting device for a boiler economizer ash hopper according to claim 1, characterized in that: A support ring (3) is connected to the outer wall of the ash hopper (1). A support leg (31) is connected to the bottom of the support ring (3). A funnel (12) is connected to the bottom of the ash hopper (1), and an ash collection box (4) is placed below the funnel (12).

6. The ash hopper ash collection device of a boiler economizer according to claim 3, characterized in that: A sealing ring groove (57) is formed in the bottom of the inner wall of the T-shaped annular groove (55). A sealing ring (58) is connected to the position of the outer wall of the T-shaped sliding ring (56) corresponding to the sealing ring groove (57).

7. The ash collecting device for the economizer ash hopper of a boiler according to claim 3, wherein: An inclined surface annular groove (59) is formed in the bottom of the T-shaped annular groove (55).

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