Dry type slag falling pipe for boiler
By using a dry ash discharge pipe design, combined with extension components, unblocking components, and a protective cover, the problems of leakage, adjustment, and unblocking difficulties of traditional water-cooled ash discharge pipes are solved, achieving stable boiler operation and extending service life.
Patent Information
- Application Number
- CN202520408295.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-10
AI Technical Summary
Traditional water-cooled slag discharge pipes suffer from leakage problems, difficulty in size adjustment and unblocking, and lack of protection, which affect the stable operation and service life of boilers.
The dry slag discharge pipe design, combined with extension components, unblocking components and protective covers, achieves sealing, automated unblocking and emergency slag discharge, and prevents high-temperature slag impact.
It improves the boiler's operational stability and reliability, reduces maintenance costs, increases unblocking efficiency, extends service life, and ensures the boiler's continuous and stable operation.
Smart Images
Figure CN223795294U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dry slag discharge technology, and in particular to a dry slag discharge pipe for boilers. Background Technology
[0002] In industrial production, boilers are widely used energy conversion equipment, and slag discharge pipes, as an important component of boilers, undertake the key task of discharging slag. Traditional water-cooled slag discharge pipes have many problems during operation. For example, the water jacket is connected to the boiler water-cooled wall tubes and participates in the overall water circulation. Frequent leaks occur at the weld seams of the water jacket. This not only affects the long-term stable operation of the boiler, but also causes waste of water resources and additional maintenance costs.
[0003] Meanwhile, existing slag discharge pipes have shortcomings in terms of size adjustment and unblocking. Due to changes in boiler operating conditions, the output and characteristics of slag will vary. The slag discharge pipe lacks an effective extension mechanism, making it difficult to ensure that the slag discharge pipe maintains a sealing effect when it expands. Moreover, when the slag discharge pipe becomes blocked, the unblocking operation is often complicated and difficult, requiring a lot of time and manpower, which seriously affects the normal operating efficiency of the boiler. In addition, the top of the slag discharge pipe lacks effective protective measures and is easily subjected to the impact and wear of high-temperature slag, reducing the service life of the slag discharge pipe.
[0004] Therefore, it is necessary to provide a new type of dry ash discharge pipe for boilers to solve the above-mentioned technical problems. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides a dry slag discharge pipe for boilers.
[0006] The dry ash discharge pipe for boilers provided by this utility model includes: a combustion furnace, an air distribution plate fixedly connected to the bottom of the combustion furnace, air caps fixedly connected at equal intervals to the top of the air distribution plate, an air inlet seat installed at the bottom of the combustion furnace, and a dry ash discharge pipe installed inside the air inlet seat. The dry ash discharge pipe is divided into an upper ash discharge pipe and a lower ash discharge pipe. A slot is opened at the top of the upper ash discharge pipe, and an extension component for extending the dry ash discharge pipe is installed in the middle of the dry ash discharge pipe.
[0007] Preferably, the extension component includes a corrugated pipe and an inner pipe. The bottom of the upper slag discharge pipe is fixedly connected to the corrugated pipe via a flange, and the top of the lower slag discharge pipe is fixedly connected to the corrugated pipe via a flange. The inner pipe is sleeved on the inner wall of the corrugated pipe, and the bottom of the upper slag discharge pipe is fixedly connected to the inner pipe.
[0008] Preferably, the unblocking component includes: a drive motor, a worm gear, a worm, a threaded rod, a connecting rod, an unblocking rod, a guide tube, a slide rod, and a sliding plate. A slide rod is slidably connected to one side of the air inlet seat, and a drive motor is fixedly connected to one end of the slide rod. A worm is fixedly connected to the output end of the drive motor. A threaded rod is installed on one side of the air inlet seat, and a worm gear is threadedly connected to one end of the threaded rod. The worm gear meshes with the worm. A groove is provided at the bottom of the air inlet seat, and a slide rod is slidably connected to the bottom of the air inlet seat through the groove. A guide tube is fixedly connected to the bottom of the slide rod, and a connecting rod is sleeved on the inner wall of the guide tube. An unblocking rod is provided at the bottom of the slag discharge pipe. One end of the connecting rod is fixedly connected to the unblocking rod, and the other end of the connecting rod is fixedly connected to the threaded rod.
[0009] Preferably, a protective cover is installed inside the combustion furnace, and an insert plate is fixedly connected to the bottom of the protective cover, with the insert plate being inserted into a slot.
[0010] Preferably, a bypass slag discharge pipe is fixedly connected to the top of the upper slag discharge pipe, and control valves are fixedly connected to the bottom of both the lower slag discharge pipe and the bypass slag discharge pipe.
[0011] Preferably, the protective cover has a concave design.
[0012] Preferably, the inner tube length is greater than the corrugated tube length.
[0013] Preferably, both ends of the guide tube are vertically oriented.
[0014] Compared with related technologies, the dry ash removal pipe for boilers provided by this utility model has the following beneficial effects:
[0015] To avoid leakage problems:
[0016] The dry ash discharge pipe design does not participate in the overall boiler water circulation, which fundamentally solves the problem of leakage at the weld seam of the water jacket of the traditional water-cooled ash discharge pipe. This greatly improves the stability and reliability of boiler operation, reduces the number of unplanned shutdowns for maintenance due to leakage, and lowers maintenance costs.
[0017] Efficient dredging:
[0018] The unblocking component installed on one side of the air inlet seat, through the coordinated work of components such as drive motor, worm gear, worm, and threaded rod, can quickly and effectively unclog the blockage in the slag discharge pipe. This automated unblocking method reduces manual intervention, lowers labor intensity, improves unblocking efficiency, and ensures smooth slag discharge from the slag discharge pipe.
[0019] Protective function:
[0020] The recessed protective cover installed inside the combustion furnace can be inserted into the slot at the top of the slag discharge pipe through the insertion plate. This can effectively reduce the impact and wear of high-temperature slag on the top of the slag discharge pipe, extend the service life of the slag discharge pipe, and also reduce the safety hazards caused by damage to the slag discharge pipe.
[0021] Emergency slag removal:
[0022] The bypass ash discharge pipe at the top of the upper ash discharge pipe enables flexible ash discharge control. In case of emergencies such as blockage of the upper ash discharge pipe, the control valve of the bypass ash discharge pipe can be quickly opened for emergency ash discharge, ensuring the continuous and stable operation of the boiler ash discharge system and avoiding combustion furnace failure due to poor ash discharge. Attached Figure Description
[0023] Figure 1 A schematic diagram of the structure of the dry slag discharge pipe for boilers provided by this utility model;
[0024] Figure 2 for Figure 1 One of the structural schematic diagrams of the unblocking component shown;
[0025] Figure 3 for Figure 1 The second schematic diagram of the unblocking component shown;
[0026] Figure 4 for Figure 1 The diagram shows the structure of the air distribution plate.
[0027] Figure 5 for Figure 2 The diagram shown is a structural schematic of a dry slag discharge pipe.
[0028] Figure 6 for Figure 5 The diagram shows the structure of the protective shield.
[0029] The following are the labels in the diagram: 1. Combustion furnace; 2. Air distribution plate; 3. Air cap; 4. Air inlet seat; 5. Dry slag discharge pipe; 6. Upper slag discharge pipe; 7. Lower slag discharge pipe; 8. Slot; 21. Corrugated pipe; 22. Inner pipe; 30. Slide groove; 31. Drive motor; 32. Worm gear; 33. Worm; 34. Threaded rod; 35. Connecting rod; 36. Unblocking rod; 37. Guide pipe; 38. Slide rod; 39. Slide plate; 41. Protective cover; 42. Insert plate; 51. Bypass slag discharge pipe; 52. Control valve. Detailed Implementation
[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.
[0031] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.
[0032] Please see Figures 1 to 6A dry ash discharge pipe 5 for boilers includes: a combustion furnace 1, an air distribution plate 2 fixedly connected to the bottom of the combustion furnace 1, air caps 3 fixedly connected at equal intervals to the top of the air distribution plate 2, an air inlet seat 4 installed at the bottom of the combustion furnace 1, a dry ash discharge pipe 5 installed inside the air inlet seat 4, the dry ash discharge pipe 5 is divided into an upper ash discharge pipe 6 and a lower ash discharge pipe 7, a slot 8 is opened at the top of the upper ash discharge pipe 6, an extension component for extending the dry ash discharge pipe 5 is installed in the middle of the dry ash discharge pipe 5, a protective cover 41 is installed inside the combustion furnace 1, an insert plate 42 is fixedly connected to the bottom of the protective cover 41, the insert plate 42 is inserted into the slot 8, a bypass ash discharge pipe 51 is fixedly connected to the top of the upper ash discharge pipe 6, and control valves 52 are fixedly connected to the bottom of both the lower ash discharge pipe 7 and the bypass ash discharge pipe 51. The protective cover 41 has a concave design.
[0033] It should be noted that if the upper slag discharge pipe 6 is blocked, the slag can be discharged through the bypass slag discharge pipe 51. If the bypass slag discharge pipe 51 also cannot discharge the slag, a steel rod or other unblocking tool can be used to insert it into the upper slag discharge pipe 6 from the bypass slag discharge pipe 51 to unblock it. The bottom insert plate 42 of the protective cover 41 can be tightly inserted into the top slot 8 of the upper slag discharge pipe 6. During the slag falling process, it can effectively block the direct impact of high-temperature slag on the top of the upper slag discharge pipe 6, reduce wear, and protect the integrity of the slag discharge pipe structure.
[0034] Please see Figures 4 to 6 The extension components include: a corrugated pipe 21 and an inner pipe 22. The bottom of the upper slag discharge pipe 6 is fixedly connected to the corrugated pipe 21 via a flange. The top of the lower slag discharge pipe 7 is fixedly connected to the corrugated pipe 21 via a flange. The inner pipe 22 is sleeved on the inner wall of the corrugated pipe 21. The bottom of the upper slag discharge pipe 6 is fixedly connected to the inner pipe 22. The length of the inner pipe 22 is greater than the length of the corrugated pipe 21.
[0035] It should be noted that when the length of the dry slag discharge pipe 5 expands due to heat, the bottom of the upper slag discharge pipe 6 is connected to components such as the corrugated pipe 21 through the flange. The extensibility of the corrugated pipe 21 allows the length of the dry slag discharge pipe 5 to be flexibly adjusted.
[0036] Please see Figures 1 to 5The unblocking components include: a drive motor 31, a worm gear 32, a worm 33, a threaded rod 34, a connecting rod 35, an unblocking rod 36, a guide pipe 37, a sliding rod 38, and a sliding plate 39. A sliding plate 39 is slidably connected to one side of the air inlet seat 4. A drive motor 31 is fixedly connected to one end of the sliding plate 39. A worm 33 is fixedly connected to the output end of the drive motor 31. A threaded rod 34 is installed on one side of the air inlet seat 4. A worm gear 32 is threadedly connected to one end of the threaded rod 34. The worm gear 32 meshes with the worm 33. A sliding groove 30 is provided at the bottom of the air inlet seat 4. A sliding rod 38 is slidably connected to the bottom of the air inlet seat 4 through the sliding groove 30. A guide pipe 37 is fixedly connected to the bottom of the sliding rod 38. A connecting rod 35 is sleeved on the inner wall of the guide pipe 37. An unblocking rod 36 is provided at the bottom of the slag discharge pipe 7. One end of the connecting rod 35 is fixedly connected to the unblocking rod 36, and the other end of the connecting rod 35 is fixedly connected to the threaded rod 34. Both ends of the guide pipe 37 are vertical.
[0037] It should be noted that the drive component needs to be manually pushed to the bottom of the slag discharge pipe 7. The chute 30 is a vertically oriented L-shaped design. When the slide plate 39 rises and is stored, the slide rod 38 slides and rises in the chute 30. Part of the length of the unblocking rod 36 is located in the guide pipe 37, and it gradually extends out of the guide pipe 37 as the connecting rod 35 extends.
[0038] The working principle of the dry ash discharge pipe for boilers provided by this utility model is as follows:
[0039] Normal slag removal process:
[0040] The air inlet seat 4 discharges air through the air cap 3 on the air distribution plate 2 into the combustion furnace 1 to promote combustion. The slag produced by the boiler combustion falls into the dry slag discharge pipe 5 inside the air inlet seat 4 through the recessed protective cover 41 inside the combustion furnace 1. Under normal circumstances, the slag is discharged through the slag discharge pipe 7. The operator can control the opening and closing of the control valve 52 at the bottom of the slag discharge pipe 7 according to the actual slag discharge needs.
[0041] Function of the extension component:
[0042] When the length of the dry slag discharge pipe 5 expands due to heat, the bottom of the upper slag discharge pipe 6 is connected to components such as the bellows 21 through the flange. The extensibility of the bellows 21 allows the dry slag discharge pipe 5 to be flexibly adjusted in length. The inner tube 22 protects the slag from falling into the bellows 21 and affecting the performance of the bellows 21. In addition, the insertion action between the insert plate 42 of the protective cover 41 and the slot 8 of the upper slag discharge pipe 6 forms a labyrinth seal while ensuring that the upper slag discharge pipe 6 can expand freely.
[0043] The working process of the unblocking component:
[0044] When the slag pipe 7 becomes blocked, push the slide plate 39 and slide rod 38. The slide rod 38 slides in the slide groove 30, so that the unblocking rod 36 comes to the axis of the slag pipe 7. Start the drive motor 31 on the slide plate 39 on one side of the air inlet seat 4. The drive motor 31 drives the worm gear 33 to rotate. Since the worm gear 33 meshes with the worm wheel 32, the worm wheel 32 rotates accordingly, which in turn causes the threaded rod 34, which is threadedly connected to the worm wheel 32, to rotate. The rotation of the threaded rod 34 drives the connecting rod 35, which is fixedly connected to it, to move along the inner wall of the guide pipe 37. The unblocking rod 36 at one end of the connecting rod 35 extends and rises vertically into the slag pipe 7. The connecting rod 35 fits tightly against the inner wall of the guide pipe 37 to unblock the blockage. Since the length of the threaded rod 34 is greater than the length of the slag pipe 7, it can ensure that the unblocking rod 36 has enough stroke to unblock the entire slag pipe 7. Both ends of the guide pipe 37 are designed to be vertically upward, which can guide the connecting rod 35 to be in a vertically upward state.
[0045] Bypass slag discharge pipe 51 emergency mechanism:
[0046] If the ash discharge pipe 6 becomes blocked, the operator can quickly open the control valve 52 at the bottom of the bypass ash discharge pipe 51 to allow the ash to be discharged through the bypass ash discharge pipe 51, ensuring that the boiler ash discharge system can still work normally in an emergency and avoiding the impact on the stable operation of the boiler due to ash discharge obstruction.
[0047] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A dry ash discharge pipe for boilers, characterized in that, include: Combustion furnace (1), the bottom of combustion furnace (1) is fixedly connected to air distribution plate (2), the top of air distribution plate (2) is fixedly connected to air cap (3) at equal intervals, and the bottom of combustion furnace (1) is equipped with air inlet seat (4); Dry slag discharge pipe (5), the air inlet seat (4) is equipped with dry slag discharge pipe (5), the dry slag discharge pipe (5) is divided into two parts: upper slag discharge pipe (6) and lower slag discharge pipe (7), and the upper slag discharge pipe (6) has a slot (8) at the top. Extension component: An extension component for extending the dry slag discharge pipe (5) is installed at the middle of the dry slag discharge pipe (5); The unblocking component is installed on one side of the air inlet seat (4) for unblocking the slag pipe (7).
2. The dry ash discharge pipe for boilers according to claim 1, characterized in that, The extension components include a corrugated pipe (21) and an inner pipe (22). The bottom of the upper slag discharge pipe (6) is fixedly connected to the corrugated pipe (21) via a flange. The top of the lower slag discharge pipe (7) is fixedly connected to the corrugated pipe (21) via a flange. The inner wall of the corrugated pipe (21) is fitted with the inner pipe (22). The bottom of the upper slag discharge pipe (6) is fixedly connected to the inner pipe (22).
3. The dry ash discharge pipe for boilers according to claim 1, characterized in that, The unblocking assembly includes: a drive motor (31), a worm gear (32), a worm (33), a threaded rod (34), a connecting rod (35), an unblocking rod (36), a guide tube (37), a slide bar (38), and a sliding plate (39). A sliding plate (39) is slidably connected to one side of the air inlet seat (4). A drive motor (31) is fixedly connected to one end of the sliding plate (39). A worm (33) is fixedly connected to the output end of the drive motor (31). A threaded rod (34) is installed on one side of the air inlet seat (4). One end of the threaded rod (34) is threadedly connected to... Worm gear (32) meshes with worm (33). The bottom of the air inlet seat (4) is provided with a sliding groove (30). The bottom of the air inlet seat (4) is slidably connected to a sliding rod (38) through the sliding groove (30). The bottom of the sliding rod (38) is fixedly connected to a guide tube (37). A connecting rod (35) is sleeved on the inner wall of the guide tube (37). The bottom of the slag drop pipe (7) is provided with a dredging rod (36). One end of the connecting rod (35) is fixedly connected to the dredging rod (36), and the other end of the connecting rod (35) is fixedly connected to the threaded rod (34).
4. The dry ash discharge pipe for boilers according to claim 1, characterized in that, The combustion furnace (1) is equipped with a protective cover (41), and a plug plate (42) is fixedly connected to the bottom of the protective cover (41). The plug plate (42) is inserted into the slot (8).
5. The dry ash discharge pipe for boilers according to claim 1, characterized in that, The top of the upper slag discharge pipe (6) is fixedly connected to a bypass slag discharge pipe (51), and the bottom of the lower slag discharge pipe (7) and the bypass slag discharge pipe (51) are both fixedly connected to a control valve (52).
6. The dry ash discharge pipe for boilers according to claim 4, characterized in that, The protective cover (41) has a concave design.
7. The dry ash discharge pipe for boilers according to claim 2, characterized in that, The length of the inner tube (22) is greater than the length of the corrugated tube (21).
8. The dry ash discharge pipe for boilers according to claim 3, characterized in that, Both ends of the guide tube (37) are vertically oriented.