Novel automatic slag poking device for slag discharging opening of boiler
By designing an automatic slag-clearing device, the slag-clearing rod performs reciprocating linear motion and rotation under the drive of the drive device, which solves the problem of outlet blockage in circulating fluidized bed boilers and achieves efficient unblocking and safe operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO JIANENG HAINUO POWER EQUIP CO LTD
- Filing Date
- 2025-04-23
- Publication Date
- 2026-05-08
AI Technical Summary
When a circulating fluidized bed boiler is in operation, slag buildup inside the furnace can cause blockages at the boiler outlet. Existing manual unblocking methods are time-consuming, labor-intensive, and pose safety hazards.
A novel automatic ash-clearing device for boiler ash discharge ports is designed. The ash-clearing rod reciprocates linearly and rotates under the drive of the drive device, replacing manual unclogging of the boiler outlet. It uses protrusions to impact and break up ash blocks, and a sealing structure prevents high-temperature ash from being ejected.
It improved the efficiency of dredging, avoided the safety hazards of manual dredging, and ensured the stable operation of the boiler.
Smart Images
Figure CN224215359U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of slag removal devices, and in particular to a novel automatic slag removal device for boiler slag discharge ports. Background Technology
[0002] During operation, the fluidization of materials inside a circulating fluidized bed boiler is affected by various factors such as coal quality, temperature, and pressure. This often results in slag caking within the boiler, which accumulates and adheres at the boiler slag discharge port, eventually blocking the outlet and preventing smooth slag discharge, thus increasing the risk of boiler shutdown. Therefore, clearing slag buildup is crucial to ensuring the normal and stable operation of the boiler.
[0003] In circulating fluidized bed boiler units, manual unclogging of the boiler outlet after slag buildup is commonly used. This involves drilling holes in the boiler ash discharge pipe and repeatedly unclogging it manually with thin steel bars such as spatula or rebar. During this process, hot red ash continuously sprays out from the insertion points, posing a safety hazard and requiring significant time and labor costs. Therefore, there is an urgent need to design a new automatic ash-clearing device for the boiler ash discharge port to solve this problem. Utility Model Content
[0004] To address the problems of time-consuming, labor-intensive, and safety hazards associated with manual slag removal at boiler outlets in existing technologies, this utility model provides a novel automatic slag removal device for boiler slag discharge ports. The slag removal rod, driven by a drive device, performs reciprocating linear motion and rotation at the boiler slag discharge port, thereby replacing manual slag removal at the boiler outlet and solving the technical problems of time-consuming, labor-intensive, and safety hazards associated with manual slag removal at boiler outlets.
[0005] This utility model provides a novel automatic ash-removing device for boiler ash discharge ports, comprising:
[0006] The slag-removing rod is set horizontally.
[0007] At least one protrusion is provided on the side wall of one end of the slag-pumping rod.
[0008] Two slide rails are installed, parallel to the slag-pumping rod.
[0009] The feeding assembly includes: a support shaft, horizontal and perpendicular to the axis of the slag-pumping rod, with its rotation axis collinear with its own axis, and both ends sliding on two slide rails respectively; a first spur gear, sleeved and fixed on the support shaft; a second spur gear, meshing with the first spur gear; a drive device, connected to the end of the slag-pumping rod without the protrusion, driving the slag-pumping rod to rotate; the drive device is also connected to the second spur gear, driving the second spur gear to rotate; and a support structure, connected to the support shaft and the drive device, and rotatably connected to the second spur gear.
[0010] In some embodiments, the driving device includes:
[0011] The motor's output shaft is connected to the end of the slag-collecting rod that does not have a protrusion.
[0012] The first bevel gear is connected to the motor output shaft.
[0013] The second bevel gear is fixedly connected to the second spur gear, is collinear with the rotation axis of the second bevel gear, meshes with the first bevel gear, and the axis of the second bevel gear is perpendicular to the axis of the first bevel gear.
[0014] In some embodiments, the slag-removing device further includes:
[0015] The drive gear is fitted and fixed on the support shaft.
[0016] The rack is parallel to the axis of the slag-pumping rod and meshes with the drive gear.
[0017] In some embodiments, the slag-removing device further includes:
[0018] Limit switches are installed on one side of the support structure near the slag-pumping rod and one side of the support structure away from the slag-pumping rod. Both limit switches are connected to the drive unit.
[0019] In some embodiments, the slag-removing device further includes:
[0020] One roller is installed at each end of the support shaft, and the two rollers roll on two slide rails respectively.
[0021] In some embodiments, multiple protrusions are provided, and all protrusions are evenly distributed around the axis of the slag-pumping rod.
[0022] In some embodiments, the protrusion is elongated and parallel to the axis of the slag-pumping rod.
[0023] In some embodiments, the end of the slag-pumping rod away from the drive device is tapered.
[0024] In some embodiments, the slag-removing device further includes:
[0025] The sealing structure has a through hole, which is inserted into and sealed to the boiler slag discharge pipe. The slag-pumping rod passes through the through hole. The protrusion and the driving device are located on both sides of the sealing structure.
[0026] In some embodiments, the through hole is divided into two sections along its own axis. The section near the protrusion is a tapered hole, and the diameter of the other section is equal to the diameter of the slag-pumping rod at all points. The end of the tapered hole near the protrusion is the large-diameter end, and the minimum diameter of the tapered hole is equal to the diameter of the slag-pumping rod.
[0027] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0028] 1. This utility model features a slag-clearing rod with a protruding end that inserts into the boiler's slag discharge pipe. After the drive device is activated, the slag-clearing rod reciprocates linearly at the boiler's slag discharge port to impact and break up the slag lumps blocking the port. Simultaneously, the drive device can also rotate the slag-clearing rod around its axis, causing the protrusion to rotate and impact the slag lumps at the boiler's slag discharge port, improving slag breaking efficiency. This utility model can replace manual labor for unclogging boiler outlets, offering high unclogging efficiency.
[0029] 2. The slag-pumping rod of this utility model is slidably and sealed to the boiler slag-lowering pipe through a sealing structure, which can effectively prevent high-temperature ash and slag from being ejected. Attached Figure Description
[0030] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0031] Figure 1 This is a schematic diagram of the installation of this utility model on a boiler;
[0032] Figure 2 This is a schematic diagram illustrating the feed assembly in this utility model;
[0033] Figure 3 This is a cross-sectional schematic diagram of the protrusion and the slag-pumping rod in this utility model.
[0034] In the picture:
[0035] 1. Slag-pumping rod; 2. Protrusion; 3. Slide rail; 41. Support shaft; 42. First spur gear; 43. Second spur gear; 44. Support structure; 441. Bracket; 442. Square tube; 451. Motor; 452. First bevel gear; 453. Second bevel gear; 5. Drive gear; 6. Rack; 7. Limit switch; 8. Roller; 9. Sealing structure; 10. Boiler slag discharge pipe. Detailed Implementation
[0036] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0037] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0038] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.
[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0040] like Figure 1-3 As shown in the embodiment of the novel automatic ash-removing device for boiler ash discharge port of this utility model, the ash-removing device includes at least:
[0041] Slag-pumping rod 1, set horizontally.
[0042] At least one protrusion 2 is provided on the side wall of one end of the slag-pumping rod 1.
[0043] Slide rail 3, parallel to slag-pumping rod 1, is provided in two.
[0044] The feeding assembly includes: a support shaft 41, horizontal and perpendicular to the axis of the slag-pumping rod 1, with its rotation axis collinear with its own axis, and both ends sliding on two slide rails 3 respectively. A first spur gear 42 is sleeved and fixed on the support shaft 41. A second spur gear 43 meshes with the first spur gear 42. A drive device is connected to the end of the slag-pumping rod 1 without the protrusion 2, driving the slag-pumping rod 1 to rotate. The drive device is also connected to the second spur gear 43, driving the second spur gear 43 to rotate. A support structure 44 is connected to the support shaft 41 and the drive device, and is rotatably connected to the second spur gear 43.
[0045] When in use, the slag-clearing device inserts the end of the slag-clearing rod 1 with the protrusion 2 into the boiler slag discharge pipe 10. After the drive device is started, the second spur gear 43 and the first spur gear 42 drive the support shaft 41 to rotate, causing the two ends of the support shaft 41 to slide on the two slide rails 3, realizing the reciprocating linear motion of the slag-clearing rod 1 at the boiler slag discharge port, so as to impact and break the slag blocks blocking the boiler slag discharge port. At the same time, the drive device can also drive the slag-clearing rod 1 to rotate around the axis of the slag-clearing rod 1, causing the protrusion 2 to rotate and impact the slag blocks at the boiler slag discharge port, improving the slag breaking efficiency.
[0046] In some embodiments, the driving device includes:
[0047] The output shaft of motor 451 is connected to the end of the slag-pumping rod 1 without the protrusion 2, so as to drive the slag-pumping rod 1 to rotate around the axis of the slag-pumping rod 1.
[0048] The first bevel gear 452 is connected to the output shaft of the motor 451.
[0049] The second bevel gear 453 is fixedly connected to the second spur gear 43, is collinear with the rotation axis of the second bevel gear 453, meshes with the first bevel gear 452, and the axis of the second bevel gear 453 is perpendicular to the axis of the first bevel gear 452.
[0050] The motor 451 changes its output direction through the cooperation of the first bevel gear 452 and the second bevel gear 453 to drive the second spur gear 43 to rotate, thereby realizing the reciprocating linear motion of the slag-pumping rod 1 at the boiler slag discharge port.
[0051] In other embodiments, the drive unit consists of two motors with horizontal and perpendicular output shafts. One output shaft is connected to the slag-pumping rod, driving the slag-pumping rod to rotate, and the other output shaft is connected to a second spur gear, driving the second spur gear to rotate. This drive unit is not shown in the figure.
[0052] In some embodiments, the slag-removing device further includes:
[0053] The drive gear 5 is sleeved and fixed on the support shaft 41.
[0054] The rack 6 is parallel to the axis of the slag-pumping rod 1 and meshes with the drive gear 5.
[0055] When the support shaft 41 rotates, it drives the drive gear 5 to rotate, changing the meshing position of the drive gear 5 on the rack 6. The arrangement of the drive gear 5 and the rack 6 makes the horizontal movement of the slag-pumping rod 1 more controllable.
[0056] Furthermore, one drive gear 5 is provided on each side of the first gear, and two racks 6 are provided, with the two racks 6 meshing with the two drive gears 5 respectively.
[0057] In some embodiments, the slag-removing device further includes:
[0058] Limit switches 7 are installed on one side of the support structure 44 near the slag-pumping rod 1 and on the other side away from the slag-pumping rod 1 to limit the horizontal movement range of the support structure 44. Both limit switches 7 are connected to the drive device. When the support structure 44 triggers either limit switch 7, the drive device will stop to prevent the feed assembly from exceeding the travel range limited by the two limit switches 7 and to prevent the support shaft 41 from disengaging from the two slide rails 3. The limit switches 7 are common parts on the market, and their structure will not be described in detail here.
[0059] In some embodiments, the slag-removing device further includes:
[0060] Rollers 8 are provided at both ends of the support shaft 41, and the two rollers 8 roll on the two slide rails 3 respectively.
[0061] The roller 8 reduces the wear of the slide rail 3 on the circumference of the support shaft 41, thus protecting the support shaft 41.
[0062] In some embodiments, the protrusion 2 is welded to the slag-removing rod 1.
[0063] In some embodiments, multiple protrusions 2 are provided, and all protrusions 2 are evenly distributed around the axis of the slag-pumping rod 1.
[0064] In some embodiments, the protrusion 2 is elongated and parallel to the axis of the slag-breaking rod 1, so as to increase the thickness of the slag block that the protrusion 2 can break and improve the slag-breaking effect when the protrusion 2 rotates.
[0065] Furthermore, the side of protrusion 2 away from the slag-pumping rod 1 is beveled.
[0066] In some embodiments, the end of the slag-poke rod 1 away from the drive device is tapered so as to quickly pierce and penetrate the slag block at the boiler slag discharge port.
[0067] In some embodiments, the slag-removing device further includes:
[0068] The sealing structure 9 has a through hole, which is inserted into the boiler ash discharge pipe 10 and sealed to the boiler ash discharge pipe 10; the ash-poke rod 1 passes through the through hole and slides and seals with the sealing structure 9; the protrusion 2 and the driving device are located on both sides of the sealing structure 9, respectively. The sealing structure 9 can effectively prevent high-temperature ash and slag from being ejected.
[0069] In some embodiments, the through-hole is divided into two sections along its own axis. The section near the protrusion 2 is a tapered hole, and the diameter of the other section is equal to the diameter of the slag-pumping rod 1 at all points. The end of the tapered hole near the protrusion 2 is the larger diameter end, and the smallest diameter of the tapered hole is equal to the diameter of the slag-pumping rod 1. The wall of the tapered hole helps guide the slag-pumping rod 1 through the sealing structure 9 and connect to the feed assembly.
[0070] In some embodiments, the slag-removing device also includes a fixed support frame, on which the slide rail 3, rack 6 and limit switch 7 are all mounted.
[0071] Furthermore, the support frame includes: a bracket 441, which is fixed in position; a square tube 442, which is fixed on the bracket 441; a slide rail 3, a rack 6, and a limit switch 7, all of which are mounted on the square tube 442, and the feed assembly slides within the square tube 442.
[0072] In some embodiments, the support structure 44 is a housing, the support shaft 41 passes through the housing, the first spur gear 42, the second spur gear 43, the first bevel gear 452 and the second bevel gear 453 are all disposed inside the housing, the motor 451 passes through the housing and is connected to the first bevel gear 452, and the slag-pumping rod 1 passes through the housing and is connected to the output shaft of the motor 451.
[0073] Through the description of several embodiments of the novel automatic ash-removing device for boiler ash discharge ports according to this utility model, it can be seen that the embodiments of the novel automatic ash-removing device for boiler ash discharge ports according to this utility model have at least one or more of the following advantages:
[0074] 1. The slag-clearing rod 1 of this utility model has one end with a protrusion 2 that inserts into the boiler slag discharge pipe 10. After the drive device is started, the slag-clearing rod 1 moves back and forth in a straight line at the boiler slag discharge port to impact and break up the slag blocks blocking the boiler slag discharge port. At the same time, the drive device can also drive the slag-clearing rod 1 to rotate around the axis of the slag-clearing rod 1, causing the protrusion 2 to rotate and impact the slag blocks at the boiler slag discharge port, thereby improving the slag breaking efficiency. This utility model can replace manual cleaning of the boiler outlet, with high cleaning efficiency.
[0075] 2. The slag-pumping rod 1 of this utility model is slidably and sealed to the boiler slag-lowering pipe 10 through the sealing structure 9, which can effectively prevent high-temperature ash and slag from being ejected.
[0076] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0077] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.
Claims
1. A novel automatic ash-removing device for boiler ash discharge ports, characterized in that, include: The slag-pumping rod should be set horizontally. At least one protrusion is provided on the side wall of one end of the slag-pumping rod; Two slide rails are installed, parallel to the slag-pumping rod; The feeding assembly includes: a support shaft, horizontal and perpendicular to the axis of the slag-pumping rod, with its rotation axis collinear with its own axis, and both ends sliding on two slide rails respectively; a first spur gear, sleeved and fixed on the support shaft; a second spur gear, meshing with the first spur gear; a drive device, connected to the end of the slag-pumping rod without a protrusion, driving the slag-pumping rod to rotate; the drive device is also connected to the second spur gear, driving the second spur gear to rotate; and a support structure, connected to the support shaft and the drive device, and rotatably connected to the second spur gear.
2. The novel automatic ash-removing device for boiler ash discharge port according to claim 1, characterized in that, The drive unit includes: The motor's output shaft is connected to the end of the slag-pumping rod that does not have a protrusion. The first bevel gear is connected to the motor output shaft; The second bevel gear is fixedly connected to the second spur gear, is collinear with the rotation axis of the second bevel gear, meshes with the first bevel gear, and the axis of the second bevel gear is perpendicular to the axis of the first bevel gear.
3. A novel automatic ash-removing device for boiler ash discharge ports according to claim 1 or 2, characterized in that, The slag removal device also includes: The drive gear is sleeved and fixed on the support shaft; The rack is parallel to the axis of the slag-pumping rod and meshes with the drive gear.
4. The novel automatic ash-removing device for boiler ash discharge port according to claim 3, characterized in that, The slag removal device also includes: Limit switches are installed on one side of the support structure near the slag-poke rod and one side of the support structure away from the slag-poke rod; both limit switches are connected to the drive device.
5. A novel automatic ash-removing device for boiler ash discharge ports according to claim 1 or 2, characterized in that, The slag removal device also includes: One roller is installed at each end of the support shaft, and the two rollers roll on two slide rails respectively.
6. The novel automatic ash-removing device for boiler ash discharge port according to claim 1, characterized in that, Multiple protrusions are provided, and all protrusions are evenly distributed around the axis of the slag-pumping rod.
7. A novel automatic ash-removing device for boiler ash discharge ports according to claim 6, characterized in that, The protrusion is elongated and parallel to the axis of the slag-pumping rod.
8. A novel automatic ash-removing device for boiler ash discharge ports according to claim 1, characterized in that, The end of the slag-pumping rod furthest from the drive device is tapered.
9. A novel automatic ash-removing device for boiler ash discharge ports according to claim 1, characterized in that, The slag removal device also includes: The sealing structure has a through hole, which is inserted into the boiler slag discharge pipe and sealed to the boiler slag discharge pipe. The slag discharge rod passes through the through hole; the protrusion and the driving device are located on both sides of the sealing structure.
10. A novel automatic ash-removing device for boiler ash discharge ports according to claim 9, characterized in that, The through hole is divided into two sections along its own axis. The section near the protrusion is a tapered hole, and the diameter of the other section is equal to the diameter of the slag-poke rod. The end of the tapered hole near the protrusion is the large-diameter end, and the minimum diameter of the tapered hole is equal to the diameter of the slag-poke rod.