Scraping mechanism for slag in boiler

Abstract

The utility model discloses a boiler internal furnace slag scraping mechanism, relates to the technical field of boiler furnace slag cleaning, and solves the problems that the existing boiler internal furnace slag scraping mechanism cannot effectively clean ash and coke formed on the inner wall of a boiler after coal combustion, the attached ash and coke can increase the thermal resistance of a heating surface, and the boiler internal furnace slag scraping mechanism cannot clean the boiler internal furnace slag. And the heat efficiency of the boiler is reduced. Comprising a base, a rack connected to the upper end of the side face of the base and a ball screw rotationally arranged in a port of the rack. The cleaning and scraping mechanism comprises a lifting seat, a rotating rod, a stepping motor and a cleaning and scraping piece; the ball screw is sleeved with the lifting seat in a threaded manner; the rack is movably sleeved with the lifting seat; the rotating rod is rotationally arranged on the bottom surface of the lifting seat; a spray ring; according to the boiler slag scraping device, slag on the inner wall of the boiler can be effectively scraped in all directions, the difficulty of follow-up cleaning work is remarkably reduced, and the heat efficiency of the boiler is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of boiler slag cleaning, in particular to a boiler internal slag scraping mechanism. Background Art

[0002] Industrial boilers are equipment used to generate high-temperature water, steam or hot air. They are usually used in heating, evaporation, drying and power generation in industrial production processes. Industrial boilers usually use coal combustion to generate heat energy. During the coal combustion process, a large amount of slag is produced, which affects the addition and combustion of coal.

[0003] Patent application number 202021934392.6 discloses an industrial boiler that avoids slag blockage. The patent includes a boiler body, a horizontal plate fixedly connected to the bottom of the inner wall of the boiler body, a square hole is provided at the top of the horizontal plate, a blocking rod is fixedly connected to the inner wall of the square hole, and connecting plates are fixedly connected on both sides of the bottom of the horizontal plate. A guide hole is provided on the left side of the connecting plate, and a rotating rod is provided through the left side of the connecting plate on the left side of the bottom of the horizontal plate. The right end of the rotating rod passes through the guide hole and extends to the right side of the connecting plate on the right side of the bottom of the horizontal plate. The surface of the right end of the rotating rod is movably sleeved with a box, and one end of the rotating rod located in the inner cavity of the box is fixedly connected to a first bevel gear. The utility model has the advantages of avoiding slag blockage, mechanically discharging slag and low labor. It solves the problem that when cleaning the slag of the existing industrial boiler, the filter residue is mostly removed by a stick and then shoveled out with a shovel, which is labor-intensive and easy to be scalded when removing the slag.

[0004] While the aforementioned prior art solutions address the labor-intensive and scalding issues of existing industrial boiler slag cleaning, they still fail to effectively address the challenge of removing the ash and coke deposits that form on the boiler's inner walls after coal combustion. These deposits increase the thermal resistance of the heating surface, thereby reducing the boiler's thermal efficiency. Therefore, to address these issues, we have designed a mechanism for scraping slag from within the boiler. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a boiler internal slag scraping mechanism. This boiler internal slag scraping mechanism solves the technical problem that existing boiler internal slag scraping mechanisms fail to effectively solve the problem of removing ash and coke formed on the boiler inner wall after coal combustion. These attached ash and coke increase the thermal resistance of the heating surface, thereby reducing the thermal efficiency of the boiler.

[0006] To achieve the above-mentioned object, according to an embodiment of the first aspect of the present invention, a boiler internal slag scraping mechanism is provided, comprising a base, a frame connected to the upper end of the side surface of the base, and a ball screw rotatably disposed in a port of the frame;

[0007] Also includes:

[0008] A cleaning and scraping mechanism, comprising a lifting seat threadedly sleeved on the ball screw and movably sleeved on the frame, a rotating rod rotatably arranged on the bottom surface of the lifting seat, a stepping motor connected to the lifting seat and having a main shaft connected to the rotating rod, and a cleaning scraper;

[0009] The spray ring is arranged on a group of regulating groove plates. The edge of the circumferential surface of the spray ring is connected with several inclined nozzles. The spray ring is provided with an interface, and the interface is provided with a corrugated soft conduit.

[0010] A further improvement is that the cleaning scraper includes an assembly sleeve sleeved on the rotating rod, several circular adjustment slot plates connected to the assembly sleeve and a cleaning scraper movably inserted into each adjustment slot plate, and each of the adjustment slot plates is provided with an adjustment groove on the top and bottom surfaces.

[0011] A further improvement is that the top surface and the bottom surface of each cleaning scraper are respectively connected to a positioning stud, each positioning stud passes through each adjustment groove respectively and is connected to a fastening cylinder at the end.

[0012] A further improvement is that a pair of limiting sleeves are provided on the side of the lifting seat, and each limiting sleeve is respectively sleeved on the two side columns of the frame.

[0013] A further improvement is that the end of each cleaning scraper is knife-edge shaped, the side of each cleaning scraper is connected to a mounting rod, and a cleaning cloth is mounted on each mounting rod via a fixing screw.

[0014] A further improvement is that a driving device is provided on the top surface of the base, and the driving device is connected to the ball screw.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] (1) The present invention selects each cleaning scraper and extracts it from each adjustment slot plate before cleaning. The blades of these cleaning scrapers are designed to be in close contact with the inner wall of the boiler. Subsequently, by tightening the fastening cylinder on the positioning stud, each cleaning scraper is ensured to be firmly fixed to meet the cleaning needs of boilers of different sizes.

[0017] (2) The utility model uses a ball screw to push the cleaning scraping mechanism deep into the boiler cavity under the action of the driving device. At this time, the stepper motor is activated, driving the rotating rod and the cleaning scraper to start rotating. At the same time, with the help of an external liquid pump, the slag remover in the slag remover storage cylinder is extracted and evenly sprayed onto the inner wall of the boiler through the spray ring and the multiple nozzles thereon, thereby decomposing the slag attached to the inner wall. In this process, as the cleaning scraper continues to rotate, the cleaning scraper can effectively and comprehensively scrape the slag on the inner wall of the boiler, significantly reducing the difficulty of subsequent cleaning work and improving the thermal efficiency of the boiler.

[0018] (3) The present invention installs a mounting rod on the side of each cleaning scraper and fixes the cleaning cloth on the mounting rod by fixing screws. In this way, during the subsequent scraping and cleaning process, the cleaning cloth will additionally wipe the inner wall of the boiler, thereby further improving the thoroughness and efficiency of cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the cleaning scraper of the utility model;

[0021] Figure 3 It is a schematic diagram of the top view of the cleaning scraper of the utility model.

[0022] Markings in the figure:

[0023] 1. Cleaning and scraping mechanism; 11. Cleaning scraper; 12. Rotating rod; 13. Lifting seat; 131. Limiting sleeve; 14. Stepping motor; 15. Mounting rod; 16. Cleaning cloth;

[0024] 101. Adjusting groove plate; 102. Cleaning scraper; 103. Adjusting groove; 104. Positioning stud; 105. Fastening cylinder; 106. Assembly sleeve;

[0025] 2. Ball screw; 21. Driving device; 22. Frame;

[0026] 3. Base;

[0027] 4. Spray ring; 41. Nozzle; 42. Interface; 43. Corrugated flexible conduit. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] like Figure 1 As shown, a boiler internal slag scraping mechanism includes a base 3, a frame 22 connected to the upper end of the side of the base 3, and a ball screw 2 rotatably arranged in the end of the frame 22. The top surface of the base 3 is provided with a driving device 21, and the driving device 21 is connected to the ball screw 2;

[0030] like Figure 1 As shown, the cleaning and scraping mechanism 1 includes a lifting seat 13 threadedly sleeved on the ball screw 2 and movably sleeved on the frame 22, a rotating rod 12 rotatably arranged on the bottom surface of the lifting seat 13, a stepping motor 14 connected to the lifting seat 13 and with a main shaft connected to the rotating rod 12, and a cleaning scraper 11. By starting the stepping motor 14 to drive the rotating rod 12 and the cleaning scraper 11 to start continuous rotation, the cleaning scraper 102 can effectively scrape the slag on the inner wall of the boiler in all directions, significantly reducing the difficulty of subsequent cleaning work and improving the thermal efficiency of the boiler.

[0031] Among them, Figure 2 and Figure 3 As shown, the cleaning scraper 11 includes an assembly sleeve 106 that is sleeved on the rotating rod 12, several circular adjustment slots 101 connected to the assembly sleeve 106, and cleaning scrapers 102 that are movably inserted into each adjustment slot 101. Each adjustment slot 101 has an adjustment groove 103 on its top and bottom surfaces. Each cleaning scraper 102 is connected to a positioning stud 104 on its top and bottom surfaces. Each positioning stud 104 extends through each adjustment groove 103 and is connected to a fastening cylinder 105 at its end. Each cleaning scraper 102 is pulled out of each adjustment slot 101. The blade surface of these cleaning scrapers 102 is designed to be in close contact with the inner wall of the boiler. Subsequently, by tightening the fastening cylinder 105 onto the positioning stud 104, each cleaning scraper 102 is ensured to be firmly fixed to meet the cleaning needs of boilers of different sizes.

[0032] like Figure 2 and Figure 3 As shown, the spray ring 4 is provided on a set of regulating slot plates 101. Several inclined nozzles 41 are connected to the edge of the circumferential surface of the spray ring 4. An interface 42 is provided on the spray ring 4. A corrugated soft conduit 43 is provided on the interface 42. The slag remover in the slag remover storage cylinder is extracted by an external liquid pump and evenly sprayed onto the inner wall of the boiler through the spray ring 4 and the multiple nozzles 41 thereon, thereby decomposing the slag attached to the inner wall. This can reduce the difficulty of cleaning and further improve the cleaning and scraping effect.

[0033] like Figure 1As shown, specifically, a pair of limiting sleeves 131 are provided on the side of the lifting seat 13, and each limiting sleeve 131 is respectively sleeved on the two side columns of the frame 22, and the pair of limiting sleeves 131 is used to ensure the stability of the lifting adjustment;

[0034] like Figure 1 As shown, specifically, as a preferred embodiment, the ends of each cleaning scraper 102 are knife-edge shaped, and the side of each cleaning scraper 102 is connected to a mounting rod 15, and a cleaning cloth 16 is mounted on each mounting rod 15 through a fixing screw. This design allows the cleaning cloth 16 to additionally wipe the inner wall of the boiler during the subsequent scraping and cleaning process, thereby further improving the thoroughness and efficiency of the cleaning.

[0035] like Figures 1 to 3 As shown, in this embodiment, the scraping mechanism described in the application document can be pre-installed on the side of the boiler or directly connected to the boiler. Boiler cleaning operations require opening the boiler cover after use. The drive device 21 includes a pair of pulleys and a DC servo motor. One pulley is connected to the main shaft of the DC servo motor, and the other pulley is connected to the ball screw 2 to drive the ball screw 2. Furthermore, the corrugated flexible conduit 43 is connected to the nozzle of the external slag remover liquid storage cylinder.

[0036] It should be noted that this application document only addresses the existing boiler internal slag scraping mechanism and fails to effectively solve the problem of removing the ash and coke formed on the boiler inner wall after coal combustion. These attached ash and coke will increase the thermal resistance of the heating surface and thus reduce the thermal efficiency of the boiler. It does not involve other aspects. The following is an introduction to the working principle of the boiler internal slag scraping mechanism:

[0037] When using this new model, after the boiler operation is completed, the on-site operator will open the boiler cover and, based on the actual diameter of the boiler cavity, pull each cleaning scraper 102 out of each adjustment slot plate 101. The blade surface of these cleaning scrapers 102 is designed to closely contact the boiler inner wall. Subsequently, by tightening the fastening cylinder 105 onto the positioning stud 104, each cleaning scraper 102 is firmly fixed to meet the cleaning needs of boilers of different sizes.

[0038] Next, under the action of the drive device 21, the ball screw 2 pushes the cleaning and scraping mechanism 1 deep into the boiler cavity. At this time, the stepper motor 14 is activated, driving the rotating rod 12 and the cleaning scraper 11 to start rotating. At the same time, with the help of an external liquid pump, the slag remover in the slag remover storage cylinder is extracted and evenly sprayed onto the inner wall of the boiler through the spray ring 4 and the multiple nozzles 41 thereon, decomposing the slag attached to the inner wall. In this process, as the cleaning scraper 11 continues to rotate, the cleaning scraper 102 can effectively and comprehensively scrape the slag from the inner wall of the boiler, significantly reducing the difficulty of subsequent cleaning work and improving the thermal efficiency of the boiler.

[0039] In addition, to improve the cleaning effect, after a cleaning cycle of the cleaning scraper mechanism 1 is completed, the operator can choose to install a mounting rod 15 on the side of each cleaning scraper 102 and fix the cleaning cloth 16 on the mounting rod 15 using a fixing screw. In this way, during the subsequent scraping and cleaning process, the cleaning cloth 16 will additionally wipe the inner wall of the boiler, thereby further improving the thoroughness and efficiency of cleaning.

[0040] The above embodiments are only used to illustrate the technical method of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A slag scraping mechanism inside a boiler, characterized in that: It comprises a base (3), a frame (22) connected to the upper end of the side of the base (3), and a ball screw (2) rotatably arranged in the port of the frame (22); Also includes: A cleaning and scraping mechanism (1) includes a lifting seat (13) threadedly sleeved on a ball screw (2) and movably sleeved on a frame (22), a rotating rod (12) rotatably arranged on the bottom surface of the lifting seat (13), a stepping motor (14) connected to the lifting seat (13) and having a main shaft connected to the rotating rod (12), and a cleaning and scraping member (11); A spray ring (4) is arranged on a set of regulating slot plates (101), and a plurality of tilted nozzles (41) are connected to the edge of the circumferential surface of the spray ring (4). An interface (42) is provided on the spray ring (4), and a corrugated soft conduit (43) is provided on the interface (42).

2. A boiler internal slag scraping mechanism according to claim 1, characterized in that: The cleaning scraper (11) comprises a mounting sleeve (106) sleeved on a rotating rod (12), a plurality of circular adjustment slot plates (101) connected to the mounting sleeve (106), and a cleaning scraper (102) movably inserted into each adjustment slot plate (101), and each adjustment slot plate (101) is provided with an adjustment groove (103) on its top and bottom surfaces.

3. A boiler internal slag scraping mechanism according to claim 2, characterized in that: The top surface and the bottom surface of each cleaning scraper (102) are respectively connected to a positioning stud (104), and each positioning stud (104) passes through each adjustment groove (103) and is connected to a fastening cylinder (105) at the end.

4. A boiler internal slag scraping mechanism according to claim 1, characterized in that: A pair of limiting sleeves (131) are provided on the side of the lifting seat (13), and each limiting sleeve (131) is respectively sleeved on the two side columns of the frame (22).

5. A boiler internal slag scraping mechanism according to claim 2, characterized in that: The end of each cleaning scraper (102) is knife-edge shaped, and the side of each cleaning scraper (102) is connected to a mounting rod (15), and a cleaning cloth (16) is mounted on each mounting rod (15) via a fixing screw.

6. A boiler internal slag scraping mechanism according to claim 1, characterized in that: A driving device (21) is provided on the top surface of the base (3), and the driving device (21) is connected to the ball screw (2).

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