Economizer flue ash removal equipment of power plant

Abstract

The invention provides economizer flue ash removal equipment of a power plant, and relates to the technical field of economizer ash removal. The rear end of the connecting main seat is connected with feeding equipment, and the front end of the connecting main seat is connected with a hollow outer rod; a transmission motor is mounted outside the connecting main seat through a bolt and is in transmission connection with the hollow outer rod; and the interior of the hollow outer rod is connected with a movable inner rod. When the scraping strip is in contact with the inner wall of the flue, the movable sliding sleeve moves forwards under the influence of resistance, the first spring is subjected to force storage contraction under the influence of the thrust of the movable sliding sleeve, the scraping strip is in close contact with the inner wall of the flue under the influence of the thrust of the first spring, and the requirement for cleaning over-thick accumulated dust on the inner wall of the flue is better met. The problems that an existing economizer flue ash removal device can only meet the requirement for ash removal of an economizer flue with the specific inner diameter, limitation exists, the movement of an ash removal component is limited, and when accumulated ash in the flue is thick, repeated ash removal operation needs to be conducted many times, and time is consumed are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of economizer ash cleaning, and particularly to an economizer flue ash cleaning device for power plants. Background Art

[0002] An economizer is a device installed at the lower part of the boiler tail flue for recovering the waste heat of the exhausted flue gas. Since it absorbs the heat of the high-temperature flue gas, reduces the exhaust temperature of the flue gas, saves energy, and improves efficiency, it is called an economizer; because the flue of the economizer is in direct contact with the high-temperature flue gas, a relatively thick layer of soot will accumulate inside the flue all year round, which affects the smoothness of the flue gas flow and the waste heat recovery effect of the economizer. Therefore, it is necessary to clean the flue of the economizer regularly.

[0003] At present, the existing economizer flue ash cleaning equipment can only be applied to the ash cleaning requirements of economizer flues with specific inner diameters during actual application, which has limitations. Moreover, the ash cleaning components are restricted by movement and can only effectively remove loose and thin-layered ash inside the flue. When facing the plate-shaped thick ash formed by viscous substances carried by high-temperature flue gas, due to the insufficient stroke of the ash cleaning components, it is necessary to adjust multiple times and repeat the ash cleaning operation to remove it, which takes a long time. Summary of the Invention

[0004] The present invention relates to an economizer flue ash cleaning device for power plants, which solves the problems that the existing economizer flue ash cleaning equipment can only be applied to the ash cleaning requirements of economizer flues with specific inner diameters during actual application, has limitations, and the ash cleaning components are restricted in movement and are only applicable to relatively thin ash inside the flue. When the ash inside the flue is thick, it is necessary to repeat the ash cleaning operation multiple times to completely remove it, and the process is time-consuming.

[0005] In the first aspect of the present invention, there is provided an economizer flue ash cleaning device for power plants, which specifically includes: a connecting main seat, a hollow outer rod, a driving motor, a movable inner rod, a movable sliding sleeve, parallel connecting rods, a cleaning member, a movable support rod, and an adjustment nut; the rear end of the connecting main seat is connected to a feeding device, and the front end of the connecting main seat is connected to a hollow outer rod; the driving motor is installed outside the connecting main seat through bolts, and the driving motor is in transmission connection with the hollow outer rod; the movable inner rod is connected inside the hollow outer rod, and the movable sliding sleeve is sleeved outside the movable inner rod; twelve parallel connecting rods are connected outside the hollow outer rod, and the cleaning member is connected to the end of the parallel connecting rods, and six cleaning members are arranged in a surrounding manner; six movable support rods are connected outside the movable sliding sleeve, and the movable support rods are connected to the cleaning member; the adjustment nut is connected outside the hollow outer rod, and the adjustment nut is connected to the movable inner rod.

[0006] Furthermore, one end of the parallel connecting rod is rotatably connected to the hollow outer rod, and the other end of the parallel connecting rod is rotatably connected to the cleaning member. The hollow outer rod is connected to six cleaning members through the parallel connecting rod. Scraping strips are arranged outside the cleaning member and are inclined at 45 degrees.

[0007] Furthermore, the movable inner rod is slidably connected to the hollow outer rod, one end of the movable support rod is rotatably connected to the cleaning member, and the other end of the movable support rod is rotatably connected to the movable sliding sleeve, and the movable sliding sleeve is connected to the six cleaning members through the movable support rod.

[0008] Furthermore, a guide slider is arranged around the rear end of the movable inner rod, and a guide slide hole is arranged around the outside of the hollow outer rod. The guide slider is slidably connected to the guide slide hole provided in the hollow outer rod. By rotating the debugging nut, the debugging nut drives the movable inner rod to move backward, and the movable inner rod drives the movable sliding sleeve to move backward synchronously. The movable sliding sleeve drives the six cleaning parts to move outward synchronously through the movable support rod, so that the scraper strip contacts the inner wall of the flue.

[0009] Furthermore, the outside of the hollow outer rod is provided with an external thread, the debugging nut is threadedly connected to the outside of the hollow outer rod, the guide slider is in contact with the debugging nut, a positioning groove is provided around the outside of the debugging nut, and the two sides of the positioning groove are inclined. The guide slider is located in the positioning groove provided in the debugging nut. After the debugging nut is rotated and adjusted, the guide slider is in the positioning groove to fix the debugging nut and prevent the debugging nut from rotating.

[0010] Furthermore, a No. 2 spring is mounted on the outside of the movable inner rod, one end of the No. 2 spring is in contact with the front end of the hollow outer rod, and the other end of the No. 2 spring is in contact with the movable inner rod. When the debugging nut drives the movable inner rod to move backward, the No. 2 spring is forced to contract under the influence of the thrust of the movable inner rod. When the debugging nut rotates in the opposite direction, the movable inner rod moves forward under the influence of the thrust of the No. 2 spring, and the movable inner rod drives the movable sliding sleeve to move forward synchronously. The movable sliding sleeve drives the six cleaning parts to move inward synchronously through the movable support rod, so that the scraper strip is separated from the inner wall of the flue.

[0011] Furthermore, the hollow outer rod is rotatably connected to the connecting main seat, a driven gear is arranged on the outside of the hollow outer rod, a driving gear is arranged on the driving shaft of the transmission motor, the driving gear is meshed with the driven gear, and the hollow outer rod is driven to rotate by the transmission motor, thereby driving the cleaning element to rotate, and the scraping strip on the outside of the cleaning element is used to scrape off the accumulated dust attached to the inner wall of the flue.

[0012] Furthermore, the movable sliding sleeve is slidably connected to the movable inner rod, and the rear end of the movable sliding sleeve is in contact with the movable inner rod.

[0013] Furthermore, a No. 1 spring is mounted on the outside of the movable inner rod, one end of the No. 1 spring is in contact with the front end of the movable inner rod, and the other end of the No. 1 spring is in contact with the front end of the movable sliding sleeve. When the scraper strip contacts the inner wall of the flue, the movable sliding sleeve moves forward under the influence of resistance, and the No. 1 spring is contracted by the thrust of the movable sliding sleeve, so that the scraper strip is in close contact with the inner wall of the flue under the influence of the thrust of the No. 1 spring.

[0014] The present invention provides a flue dust cleaning device for an economizer of a power plant, which has the following beneficial effects: When the present invention is in use, the guide slider and the guide slide hole slide in cooperation to limit the moving distance of the movable inner rod. According to the different inner diameters of the flue, the debugging nut can be rotated, the debugging nut drives the movable inner rod to move backward, the movable inner rod drives the movable sliding sleeve to move backward synchronously, and the movable sliding sleeve drives the six cleaning parts to move outward synchronously through the movable support rod, so that the scraper strip contacts the inner wall of the flue, which is better suitable for the cleaning needs of flues with different inner diameters. After the debugging nut is rotated and adjusted, the guide slider is in the positioning groove to fix the debugging nut, prevent the debugging nut from rotating, and ensure the stability of the debugging nut.

[0015] In addition, the No. 2 spring has an elastic reset effect on the movable inner rod; when the debugging nut drives the movable inner rod to move backward, the No. 2 spring is affected by the thrust of the movable inner rod and contracts; when the debugging nut rotates in the opposite direction, the movable inner rod moves forward under the thrust of the No. 2 spring, and the movable inner rod drives the movable sliding sleeve to move forward synchronously, and the movable sliding sleeve drives the six cleaning parts to move inward synchronously through the movable support rod, so that the scraper strip is separated from the inner wall of the flue, and the scraper strip can be taken out of the flue; the hollow outer rod is driven to rotate by the transmission motor, and then the cleaning part is driven to rotate, and the scraper strip outside the cleaning part is used to scrape off the accumulated dust attached to the inner wall of the flue, so as to ensure the smoothness of the economizer flue, thereby ensuring the waste heat recovery effect of the economizer.

[0016] In addition, after the movable inner rod stops moving, the movable sleeve has a certain range of movement, so that the cleaning part has a certain range of movement, and the No. 1 spring has an elastic reset effect on the movable sleeve; when the scraper strip contacts the inner wall of the flue, the movable sleeve moves forward under the influence of resistance, and the No. 1 spring accumulates force and contracts under the influence of the thrust of the movable sleeve, so that the scraper strip is in close contact with the inner wall of the flue under the influence of the thrust of the No. 1 spring. After the scraper strip finishes cleaning the surface dust, it contacts the deep dust by itself to clean it, which is better suitable for the cleaning needs of the excessively thick dust on the inner wall of the flue.

[0017] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0019] The accompanying drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0020] In the accompanying drawings: Figure 1 The overall axonometric structural schematic diagram of the economizer flue ash cleaning equipment of the power plant of the present application is shown; Figure 2 The overall axonometric structural schematic diagram of the economizer flue ash cleaning equipment of the power plant of the present application in another angle state is shown; Figure 3 The connection structural schematic diagram of the connecting main seat and the hollow outer rod of the present application is shown; Figure 4 The connection structural schematic diagram of the hollow outer rod, the movable inner rod, the movable sliding sleeve, the parallel connecting rod, the cleaning member and the movable support rod of the present application is shown; Figure 5 The connection structural schematic diagram of the movable inner rod and the movable sliding sleeve of the present application is shown; Figure 6 The disassembly structural schematic diagram of the movable inner rod and the movable sliding sleeve of the present application is shown; Figure 7 The connection structural schematic diagram of the parallel connecting rod, the cleaning member and the movable support rod of the present application is shown; Figure 8 The axonometric structural schematic diagram of the debugging nut of the present application is shown.

[0021] Reference signs: 1, connecting main seat; 2, hollow outer rod; 201, driven gear; 202, guiding sliding hole; 203, external thread; 3, driving motor; 301, driving gear; 4, movable inner rod; 401, guiding slider; 5, movable sliding sleeve; 6, parallel connecting rod; 7, cleaning member; 701, scraping strip; 8, movable support rod; 9, first spring; 10, debugging nut; 1001, positioning groove; 11, second spring. Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0023] Please refer to Figures 1 to 8 : Embodiment 1: The present invention provides a soot cleaning device for the economizer flue of a power plant, including: a connecting main seat 1, a hollow outer rod 2, a driving motor 3, a movable inner rod 4, a movable sliding sleeve 5, parallel connecting rods 6, a cleaning member 7, a movable support rod 8 and an adjustment nut 10; the rear end of the connecting main seat 1 is connected to a feeding device, and the front end of the connecting main seat 1 is connected to a hollow outer rod 2; a driving motor 3 is installed outside the connecting main seat 1 through bolts, and the driving motor 3 is in transmission connection with the hollow outer rod 2; a movable inner rod 4 is connected inside the hollow outer rod 2, and a movable sliding sleeve 5 is sleeved outside the movable inner rod 4; twelve parallel connecting rods 6 are connected outside the hollow outer rod 2, and a cleaning member 7 is connected to the end of the parallel connecting rod 6, and six cleaning members 7 are arranged in a surrounding manner; six movable support rods 8 are connected outside the movable sliding sleeve 5, and the movable support rods 8 are connected to the cleaning member 7; an adjustment nut 10 is connected outside the hollow outer rod 2, and the adjustment nut 10 is connected to the movable inner rod 4; one end of the parallel connecting rod 6 is rotatably connected to the hollow outer rod 2, and the other end of the parallel connecting rod 6 is rotatably connected to the cleaning member 7. The hollow outer rod 2 is connected to six cleaning members 7 through the parallel connecting rods 6. Scraper strips 701 are arranged in an array on the outside of the cleaning member 7, and the scraper strips 701 are inclined at 45 degrees; the movable inner rod 4 is slidably connected to the hollow outer rod 2, one end of the movable support rod 8 is rotatably connected to the cleaning member 7, and the other end of the movable support rod 8 is rotatably connected to the movable sliding sleeve 5. The movable sliding sleeve 5 is connected to six cleaning members 7 through the movable support rods 8.

[0024] In this embodiment, a guiding slider 401 is arranged in a surrounding manner at the rear end of the movable inner rod 4, and a guiding sliding hole 202 is arranged in a surrounding manner outside the hollow outer rod 2. The guiding slider 401 is slidably connected in the guiding sliding hole 202 provided in the hollow outer rod 2; Adopting the above technical solution, the guiding slider 401 and the guiding sliding hole 202 are in sliding fit to limit the moving distance of the movable inner rod 4. According to the different inner diameters of the flue, the adjustment nut 10 can be rotated. The adjustment nut 10 drives the movable inner rod 4 to move backward, and the movable inner rod 4 drives the movable sliding sleeve 5 to move backward synchronously. The movable sliding sleeve 5 drives six cleaning members 7 to move outward synchronously through the movable support rods 8, so that the scraper strips 701 are in contact with the inner wall of the flue, which is more suitable for soot cleaning required for flues with different inner diameters.

[0025] In this embodiment, an external thread 203 is provided outside the hollow outer rod 2. The adjustment nut 10 is threadedly connected to the outside of the hollow outer rod 2. The guiding slider 401 is in contact with the adjustment nut 10. A positioning groove 1001 is arranged in a surrounding manner outside the adjustment nut 10. Both sides of the positioning groove 1001 are inclined. The guiding slider 401 is located in the positioning groove 1001 provided in the adjustment nut 10; Adopting the above technical solution, after the adjustment nut 10 is rotated and adjusted, the guiding slider 401 is located in the positioning groove 1001 to fix the adjustment nut 10 and prevent the adjustment nut 10 from rotating, ensuring the stability of the state of the adjustment nut 10.

[0026] In this embodiment, a second spring 11 is sleeved on the outside of the movable inner rod 4, one end of the second spring 11 contacts the front end of the hollow outer rod 2, and the other end of the second spring 11 contacts the movable inner rod 4; By adopting the above technical scheme, the movable inner rod 4 is elastically reset by the No. 2 spring 11; when the debugging nut 10 drives the movable inner rod 4 to move backward, the No. 2 spring 11 accumulates force and contracts under the influence of the thrust of the movable inner rod 4, and when the debugging nut 10 rotates in the opposite direction, the movable inner rod 4 moves forward under the influence of the thrust of the No. 2 spring 11, and the movable inner rod 4 drives the movable sliding sleeve 5 to move forward synchronously, and the movable sliding sleeve 5 drives the six cleaning parts 7 to move inward synchronously through the movable support rod 8, so that the scraper 701 is separated from the inner wall of the flue, and it can be taken out of the flue.

[0027] In this embodiment, the hollow outer rod 2 is rotatably connected to the connecting main seat 1, a driven gear 201 is arranged outside the hollow outer rod 2, a driving gear 301 is arranged on the driving shaft of the transmission motor 3, and the driving gear 301 is in transmission meshing with the driven gear 201; By adopting the above technical solution, the transmission motor 3 drives the hollow outer rod 2 to rotate, thereby driving the cleaning member 7 to rotate, and the external scraper strip 701 of the cleaning member 7 is used to scrape off the accumulated dust attached to the inner wall of the flue, thereby ensuring the smoothness of the economizer flue.

[0028] Embodiment 2, on the basis of embodiment 1, the movable sleeve 5 is slidably connected with the movable inner rod 4, the rear end of the movable sleeve 5 contacts the movable inner rod 4, a No. 1 spring 9 is sleeved on the outside of the movable inner rod 4, one end of the No. 1 spring 9 contacts the front end of the movable inner rod 4, and the other end of the No. 1 spring 9 contacts the front end of the movable sleeve 5; By adopting the above technical scheme, after the movable inner rod 4 stops moving, the movable sleeve 5 has a certain range of movement, so that the cleaning member 7 has a certain range of movement, and the movable sleeve 5 is elastically reset through the No. 1 spring 9; when the scraper strip 701 contacts the inner wall of the flue, the movable sleeve 5 moves forward under the influence of resistance, and the No. 1 spring 9 accumulates force and contracts under the influence of the thrust of the movable sleeve 5, so that the scraper strip 701 is in close contact with the inner wall of the flue under the influence of the thrust of the No. 1 spring 9. After the scraper strip 701 finishes cleaning the surface dust, it contacts the deep dust by itself to clean it, which is better suitable for the cleaning needs of the excessively thick dust on the inner wall of the flue.

[0029] The working principle of this embodiment is as follows: according to the different inner diameters of the flue, the debugging nut 10 can be rotated, the debugging nut 10 drives the movable inner rod 4 to move backward, the movable inner rod 4 drives the movable sliding sleeve 5 to move backward synchronously, and the movable sliding sleeve 5 drives the six cleaning members 7 to move outward synchronously through the movable support rod 8, so that the scraper strip 701 contacts the inner wall of the flue; after the debugging nut 10 is rotated and adjusted, the guide slider 401 is in the positioning groove 1001, the debugging nut 10 is fixed, and the debugging nut 10 is prevented from rotating; when the debugging nut 10 drives the movable inner rod 4 to move backward, the No. 2 spring 11 is affected by the thrust of the movable inner rod 4 and contracts; when the scraper strip 701 contacts the inner wall of the flue, the movable sliding sleeve 5 moves forward under the influence of resistance, and the No. 1 spring 9 is affected by the thrust of the movable sliding sleeve 5. The accumulated force contracts, so that the scraper strip 701 is in close contact with the inner wall of the flue under the influence of the thrust of the No. 1 spring 9; the feeding device drives the connecting main seat 1 to move inward along the flue, and drives the hollow outer rod 2 to rotate through the transmission motor 3, thereby driving the cleaning member 7 to rotate, and uses the external scraper strip 701 of the cleaning member 7 to scrape off the accumulated dust attached to the inner wall of the flue, so as to ensure the smoothness of the economizer flue, thereby ensuring the waste heat recovery effect of the economizer; after the inner wall of the flue is cleaned, the debugging nut 10 is rotated in the opposite direction, and the movable inner rod 4 moves forward under the influence of the thrust of the No. 2 spring 11, and the movable inner rod 4 drives the movable sliding sleeve 5 to move forward synchronously, and the movable sliding sleeve 5 drives the six cleaning members 7 to move inward synchronously through the movable support rod 8, so that the scraper strip 701 is separated from the inner wall of the flue, and it can be taken out of the flue.

[0030] In this article, there are a few points to note: 1. The drawings of the embodiments of the present invention only involve structures related to the embodiments of the present invention, and other structures can refer to the general design.

[0031] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0032] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. The economizer flue ash cleaning equipment of a power plant, comprising: Connect the main seat (1), the hollow outer rod (2), the drive motor (3), the movable inner rod (4), the movable sliding sleeve (5), the parallel connecting rod (6), the cleaning part (7), the movable support rod (8) and the debugging nut (10); it is characterized in that the rear end of the main seat (1) is connected to the feeding device, and the front end of the main seat (1) is connected to the hollow outer rod (2); a drive motor (3) is installed outside the main seat (1) by bolts, and the drive motor (3) is in transmission connection with the hollow outer rod (2); the movable inner rod (4) is connected inside the hollow outer rod (2), and the movable sliding sleeve (5) is sleeved outside the movable inner rod (4); twelve parallel connecting rods (6) are connected to the outside of the hollow outer rod (2), and the end of the parallel connecting rod (6) is connected to the cleaning part (7), and six cleaning parts (7) are arranged around; six movable support rods (8) are connected to the outside of the movable sliding sleeve (5), and the movable support rod (8) is connected to the cleaning part (7); a debugging nut (10) is connected to the outside of the hollow outer rod (2), and the debugging nut (10) is connected to the movable inner rod (4).

2. The economizer flue ash cleaning equipment of the power plant according to claim 1, characterized in that, One end of the parallel connecting rod (6) is rotatably connected to the hollow outer rod (2), the other end of the parallel connecting rod (6) is rotatably connected to the cleaning part (7), the hollow outer rod (2) is connected to six cleaning parts (7) through the parallel connecting rod (6), and scraping strips (701) are arranged in an array on the outside of the cleaning part (7), and the scraping strips (701) are inclined at 45 degrees.

3. The economizer flue ash cleaning equipment of the power plant according to claim 2, characterized in that, The movable inner rod (4) is slidably connected to the hollow outer rod (2), one end of the movable support rod (8) is rotatably connected to the cleaning part (7), the other end of the movable support rod (8) is rotatably connected to the movable sliding sleeve (5), and the movable sliding sleeve (5) is connected to six cleaning parts (7) through the movable support rod (8).

4. The economizer flue ash cleaning device of the power plant according to claim 1, characterized in that, Guide sliders (401) are arranged around the rear end of the movable inner rod (4), guide sliding holes (202) are arranged around the outside of the hollow outer rod (2), and the guide sliders (401) are slidably connected in the guide sliding holes (202) provided on the hollow outer rod (2).

5. The economizer flue soot cleaning device of a power plant according to claim 4, characterized in that, External threads (203) are provided on the outside of the hollow outer rod (2), the debugging nut (10) is threadedly connected to the outside of the hollow outer rod (2), the guide slider (401) contacts the debugging nut (10), positioning grooves (1001) are arranged around the outside of the debugging nut (10), both sides of the positioning grooves (1001) are inclined, and the guide slider (401) is located in the positioning grooves (1001) provided on the debugging nut (10).

6. The economizer flue ash cleaning device of a power plant according to claim 5, characterized in that, A second spring (11) is sleeved outside the movable inner rod (4), one end of the second spring (11) contacts the front end of the hollow outer rod (2), and the other end of the second spring (11) contacts the movable inner rod (4).

7. The economizer flue ash cleaning device of a power plant according to claim 1, characterized in that, The hollow outer rod (2) is rotatably connected to the main seat (1), a driven gear (201) is provided on the outside of the hollow outer rod (2), a driving gear (301) is provided on the driving shaft of the drive motor (3), and the driving gear (301) is in transmission engagement with the driven gear (201).

8. The economizer flue ash cleaning device of a power plant according to claim 1, characterized in that, The movable sliding sleeve (5) is slidably connected to the movable inner rod (4), and the rear end of the movable sliding sleeve (5) contacts the movable inner rod (4).

9. The economizer flue ash cleaning equipment of the power plant according to claim 8, characterized in that, A first spring (9) is sleeved outside the movable inner rod (4). One end of the first spring (9) contacts the front end of the movable inner rod (4), and the other end of the first spring (9) contacts the front end of the movable sliding sleeve (5).

Images