Pneumatic ash conveying pipeline structure for coal economizer

Abstract

The utility model relates to the technical field of coal economizers, and discloses a pneumatic ash conveying pipeline structure for a coal economizer, which comprises a first pipeline, a second pipeline and a third pipeline, the first pipeline and the third pipeline are respectively arranged at two ends of the second pipeline, a baffle plate is fixedly arranged in the third pipeline, a plurality of filter holes are arranged on the baffle plate, and the filter holes are communicated with the first pipeline. A motor is embedded in the baffle, a rotating shaft is arranged at the output end of the motor, the upper end of the rotating shaft penetrates through the baffle and is sleeved with an arc-shaped scraping plate, a groove matched with the arc-shaped scraping plate is formed in the inner wall of the third pipeline, a through hole penetrating through the third pipeline is formed in the inner bottom end of the groove, and a sealing end cover is arranged in the through hole. According to the utility model, the baffle plate, the arc-shaped scraping plate and the groove are arranged in a matched manner, so that the falling hardened particulate matters are filtered and collected and are prevented from blocking the ash conveying pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of economizers, in particular to a pneumatic ash conveying pipeline structure for economizers. Background Art

[0002] The existing economizer ash conveying system mainly adopts the method of compressed air dense phase conveying, which collects large particles in the fly ash from the bottom of the economizer ash hopper and transports them to the coarse ash storage. However, in the actual transportation process, due to incomplete dust drying and uneven wind force at the end of the pipeline, some fly ash may adhere to the inner wall of the pipeline and cause compaction. Over time, the larger particles of compacted dust fall off due to gravity, causing blockage in the ash conveying pipeline and affecting the normal operation of the ash conveying system. Utility Model Content

[0003] The utility model aims to provide a pneumatic ash conveying pipeline structure for an economizer to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pneumatic ash conveying pipeline structure for an economizer, comprising a first pipeline, a second pipeline and a third pipeline, the first pipeline and the third pipeline are arranged at both ends of the second pipeline, a baffle is fixedly installed in the third pipeline, a plurality of filter holes are provided on the baffle, and a motor is embedded in the baffle, a rotating shaft is provided on the output end of the motor, the upper end of the rotating shaft passes through the baffle and is sleeved with an arc scraper, a groove matching the arc scraper is provided on the inner wall of the third pipeline, a through hole passing through the third pipeline is provided at the bottom end of the groove, and a sealing end cover is provided in the through hole.

[0005] The following improvements are made in the present application: the second pipe is arranged in the vertical direction, the angle between the first pipe and the second pipe is 90°, and the angle between the third pipe and the second pipe is 90°. The air velocity entering the second pipe from the first pipe is attenuated, and for larger compacted particles, they will fall to the bottom of the second pipe in a parabolic form under the combined effect of inertia and their own gravity.

[0006] The following improvement is made in the present application: the end of the second pipe located below the first pipe is detachably connected to a receiving device, the receiving device is connected to the second pipe, and an interception plate is provided in the middle of the receiving device, the interception plate extends upward to the second pipe and is flush with the central axis of the first pipe. By providing the interception plate, the compacted particles that are located at the lower part of the pipe due to gravity can be intercepted for the first stage of filtration.

[0007] The following improvement is made in the present application: a guide plate is provided on the inner wall of the top of the second pipe opposite to the third pipe, and the guide plate is arranged in a quarter arc shape. By providing the arc-shaped guide plate, fly ash can be effectively prevented from accumulating at the pipe connection during the process of entering the third pipe from the second pipe.

[0008] The following improvements are made in the present application: a fixed plate is provided on the side of the baffle away from the second pipe, both ends of the fixed plate are connected to the inner wall of the third pipe through a sliding assembly, a loading rack is provided on the fixed plate, and a plurality of dredging rods corresponding to the filter holes are provided on the loading rack. The filter holes on the baffle are cleaned by using the dredging rods to prevent blockage.

[0009] The following improvements are made in the present application: the sliding assembly includes a slide groove opened on the third pipe, a slider is installed in the slide groove, the fixed plate is fixedly connected to the slider, and a telescopic cylinder is embedded in the third pipe located on one side of the slide groove, and the telescopic rod of the telescopic cylinder is sleeved and fixed to the slider. When the telescopic cylinder is started, the slider and the fixed plate are driven by the telescopic rod to move left and right in the slide groove, and when the loading frame contacts the baffle, the dredging rod on the loading frame is inserted into the filter hole to push out the accumulated dust in the filter hole.

[0010] Compared with the prior art, the utility model provides a flue gas soot blowing device for a low-temperature economizer, which has the following beneficial effects:

[0011] The utility model realizes the filtering and collection of the fallen compacted particles through the coordinated arrangement between the baffle, the arc-shaped scraper and the groove, so as to prevent the particles from clogging the ash conveying pipeline. The baffle blocks the compacted particles so that they remain on the surface of the baffle, and the motor is started to drive the rotating shaft to rotate, which in turn drives the arc-shaped scraper to rotate on the baffle, thereby cleaning the compacted particles on the surface of the baffle. Under the joint action of the arc-shaped scraper and centrifugal force, the compacted particles can be pushed into the groove for collection, and the sealing end cover is removed, and the compacted particles are discharged from the through hole at the bottom of the groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a cross-sectional view of the utility model;

[0013] Figure 2 is a schematic diagram of the structure of the baffle;

[0014] Figure 3 This is a plan view of the loading rack.

[0015] In the figure: 1. first pipeline; 2. second pipeline; 21. receiving device; 22. intercepting plate; 23. guide plate; 3. third pipeline; 31. groove; 32. sealing end cover; 4. baffle; 41. filter hole; 42. motor; 43. rotating shaft; 44. arc scraper; 5. fixing plate; 51. loading frame; 52. dredging rod; 53. slide groove; 54. slider; 55. telescopic cylinder. DETAILED DESCRIPTION

[0016] The technical scheme in the embodiment of the present invention will be described below in conjunction with the accompanying drawings in the embodiment of the present invention:

[0017] like Figure 1-3 As shown, a pneumatic ash conveying pipeline structure for an economizer is mainly composed of a first pipeline 1, a second pipeline 2 and a third pipeline 3, wherein the first pipeline 1 and the third pipeline 3 are arranged at both ends of the second pipeline 2, and the second pipeline 2 is arranged in a vertical direction, the angle between the first pipeline 1 and the second pipeline 2 is 90°, and the angle between the third pipeline 3 and the second pipeline 2 is 90°. The end of the second pipeline 2 located below the first pipeline 1 is detachably connected with a receiving device 21, the receiving device 21 is communicated with the second pipeline 2, and an intercepting plate 22 is provided in the middle of the receiving device 21, the intercepting plate 22 extends upward to the second pipeline 2 and is flush with the central axis of the first pipeline 1, and a guide plate 22 is provided on the inner wall of the top end of the second pipeline 2 opposite to the third pipeline 3, and the guide plate 22 is arranged in a quarter-circular arc structure.

[0018] A baffle 4 is fixedly installed in the third pipe 3, and a plurality of filter holes 41 are provided on the baffle 4. The plurality of filter holes 41 are circumferentially distributed with the center of the baffle 4 as the center of the circle, and a motor 42 is embedded in the baffle 4. A rotating shaft 43 is provided on the output end of the motor 42. The upper end of the rotating shaft 43 penetrates the baffle 4 and is sleeved with an arc scraper 44. A groove 31 matching the arc scraper 44 is provided on the inner wall of the third pipe 3. A through hole 32 penetrating the third pipe 3 is provided at the bottom end of the groove 31. A sealing end cover 3 is provided in the through hole 32. A fixing plate 5 is provided on the side of the baffle 4 away from the second pipe 2. The fixing plate The two ends of 5 are connected to the inner wall of the third pipe 3 through a sliding assembly. A loading frame 51 is provided on the fixed plate 5. The loading frame 51 is in a multi-layered ring structure. The number of layers corresponds to the arrangement of the filter holes 41 on the baffle 4, and a plurality of dredging rods 52 corresponding to the filter holes 41 are provided on the loading frame 51. The sliding assembly includes a slide groove 53 opened on the third pipe 3, a slider 54 is installed in the slide groove 53, the fixed plate 5 is fixedly connected to the slider 54, and a telescopic cylinder 55 is embedded in the third pipe 3 on one side of the slide groove 53. The telescopic rod of the telescopic cylinder 55 is fixedly connected with the slider 54.

[0019] The above embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A pneumatic ash conveying pipeline structure for an economizer, characterized in that: The invention comprises a first pipeline (1), a second pipeline (2) and a third pipeline (3), wherein the first pipeline (1) and the third pipeline (3) are arranged at two ends of the second pipeline (2), a baffle (4) is fixedly installed in the third pipeline (3), a plurality of filter holes (41) are provided on the baffle (4), and a motor (42) is embedded in the baffle (4), a rotating shaft (43) is provided on the output end of the motor (42), the upper end of the rotating shaft (43) passes through the baffle (4) and is sleeved with an arc-shaped scraper (44), a groove (31) matching with the arc-shaped scraper (44) is provided on the inner wall of the third pipeline (3), a through hole passing through the third pipeline (3) is provided at the bottom end of the groove (31), and a sealing end cover (32) is provided in the through hole.

2. The pneumatic ash conveying pipeline structure for economizer according to claim 1, characterized in that: The second pipeline (2) is arranged in a vertical direction, the angle between the first pipeline (1) and the second pipeline (2) is 90°, and the angle between the third pipeline (3) and the second pipeline (2) is 90°.

3. The pneumatic ash conveying pipeline structure for economizer according to claim 2, characterized in that: The end of the second pipeline (2) located below the first pipeline (1) is detachably connected to a receiving device (21), the receiving device (21) is in communication with the second pipeline (2), and an intercepting plate (22) is provided in the middle of the receiving device (21), the intercepting plate (22) extends upward to the second pipeline (2) and is flush with the central axis of the first pipeline (1).

4. The pneumatic ash conveying pipeline structure for economizer according to claim 3 is characterized in that: A guide plate (23) is provided on the inner wall of the top end of the second pipe (2) opposite to the third pipe (3), and the guide plate (23) is arranged in a quarter-circular arc structure.

5. The pneumatic ash conveying pipeline structure for economizer according to claim 1, characterized in that: A fixing plate (5) is provided on the side of the baffle (4) away from the second pipe (2), and both ends of the fixing plate (5) are connected to the inner wall of the third pipe (3) through sliding components. A loading frame (51) is provided on the fixing plate (5), and a plurality of dredging rods (52) corresponding to the filter holes (41) are provided on the loading frame (51).

6. The pneumatic ash conveying pipeline structure for economizer according to claim 5, characterized in that: The sliding assembly comprises a slide groove (53) provided on the third pipe (3), a sliding block (54) being installed in the slide groove (53), the fixing plate (5) being fixedly connected to the sliding block (54), a telescopic cylinder (55) being embedded in the third pipe (3) located on one side of the slide groove (53), and a telescopic rod of the telescopic cylinder (55) being sleeved and fixed to the sliding block (54).

Images