Anti-blocking deslagging device of biomass boiler
By using the matching design of the threaded rod and the sliding sleeve and the bevel gear system driven by the motor, the problems of blade wear and inflexible slag discharge in the boiler slag discharge device are solved, and the long service life and efficient quantitative slag discharge of the equipment are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-03-24
AI Technical Summary
In existing boiler ash discharge devices, the screw conveyor blades are prone to wear when moving materials upward, which leads to a shortened equipment life and increased maintenance costs. At the same time, the ash discharge is not flexible enough and it is difficult to achieve quantitative feeding.
The design employs a threaded rod and a sliding sleeve, which allows the sawtooth spiral blades to move the cone upwards via the sliding sleeve during rotation, thus preventing blade wear. The turntable and baffle work together to achieve quantitative material feeding. A motor-driven bevel gear system drives the rotating sleeve and push plate frame, supplemented by a scraper to clean the waste material from the inner wall.
It improves the service life of the serrated spiral blades, reduces the frequency of maintenance, enables flexible quantitative slag discharge and internal wall cleaning, and reduces maintenance costs.
Smart Images

Figure CN224033828U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of ash discharge devices, and in particular to an anti-clogging ash discharge device for biomass boilers. Background Technology
[0002] Boilers produce a large amount of ash and slag after combustion, which needs to be discharged. To prevent ash blockage in the ash discharge pipe, the ash and slag need to be cleaned.
[0003] A search revealed that CN220103157U discloses a boiler slag discharge pipe anti-clogging mechanism. This mechanism involves a threaded sleeve that is limited by two telescopic sleeves and driven by a threaded connection to a reciprocating screw, causing it to move up and down. The rising and falling of the threaded sleeve also pushes the auger rod up and down, allowing the auger rod to rotate while simultaneously lifting material up and down. However, while this method clears the pipe, the auger rod causes the material to move upwards. This upward movement increases the pressure on the auger blades, leading to accelerated wear of the blade components, shortening the equipment's lifespan, and increasing maintenance costs and replacement frequency. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a biomass boiler anti-clogging ash discharge device.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A biomass boiler anti-clogging ash discharge device includes a shell and a base, with the shell and base fixed together. A fixed rod is movably connected to the inner bottom wall of the base, and a threaded rod is fixedly connected to the top of the fixed rod. A sliding sleeve is movably connected to the outer side of the threaded rod. A rotating sleeve is movably connected inside the shell. Sliding grooves are formed on both sides of the top of the rotating sleeve, and protrusions on both sides of the sliding sleeve are slidably connected to the sliding grooves. A power component for driving the rotating sleeve to rotate is provided inside the base. A serrated spiral blade is fixedly connected to the outer circumference of the rotating sleeve, and a push plate frame is fixedly connected to the outer circumference of the rotating sleeve, and the push plate frame contacts the inner bottom wall of the shell. A cone is fixedly connected to the top of the sliding sleeve, and the cone passes through the rotating sleeve. A discharge port is formed at the bottom of the shell, and an adjustable blocking component for blocking the discharge port is provided at the bottom of the base.
[0007] As a further embodiment of this utility model, the shielding component includes a turntable, which is rotatably connected to the outer circumferential wall of the top of the base. Both sides of the turntable are fixedly connected to baffles, and the baffles can block the feed port.
[0008] As a further embodiment of this utility model, the power assembly includes a second bevel gear, which is keyed to the outside of the rotating sleeve. A motor is fixedly connected to the bottom inner wall of the base, and a first bevel gear is keyed to one end of the motor output shaft, with the first bevel gear meshing with the second bevel gear.
[0009] As a further embodiment of this utility model, the top of the push plate frame is fixedly connected with multiple scrapers, and the scrapers are in contact with the inner wall of the housing.
[0010] As a further embodiment of this invention, a flange is fixedly connected to the top of the housing.
[0011] As a further improvement of this utility model, one end of the base is provided with multiple heat dissipation vents.
[0012] As a further improvement of this utility model, a handle is fixedly connected to the bottom of the baffle.
[0013] The beneficial effects of this utility model are as follows:
[0014] 1. This utility model uses the cooperation of a threaded rod and a sliding sleeve to enable the sawtooth spiral blade to move the cone block upwards to push the material during rotation. This avoids the sawtooth spiral blade moving upwards while rotating, which would cause accelerated wear of the blade components, thus improving the service life of the sawtooth spiral blade and reducing maintenance costs and the frequency of replacement of the sawtooth spiral blade.
[0015] 2. The combination of the turntable and the baffle allows the operator to adjust the opening size of the discharge port according to the needs, thereby enabling the waste material to be discharged in a quantitative manner and improving the flexibility of the device.
[0016] 3. This utility model can not only smoothly discharge the waste at the bottom of the shell by assisting the push plate frame, but also scrape off the waste adhering to the inner wall of the shell by scraping the scraper, so as to avoid the waste adhering to the inner wall of the shell for a long time and being difficult to clean. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the elevation structure of a biomass boiler anti-clogging ash discharge device proposed in this utility model;
[0018] Figure 2 This is a schematic diagram of the low-level structure of a biomass boiler anti-clogging ash discharge device proposed in this utility model;
[0019] Figure 3 This is a cross-sectional structural diagram of a biomass boiler anti-clogging ash discharge device proposed in this utility model.
[0020] Figure 4This is a partially enlarged structural diagram of a biomass boiler anti-clogging and ash discharge device proposed in this utility model.
[0021] In the diagram: 1. Housing; 2. Flange; 3. Heat dissipation vent; 4. Base; 5. Handle; 6. Baffle; 7. Turntable; 8. Push plate frame; 9. Scraper; 10. Serrated spiral blade; 11. Conical block; 12. Rotating sleeve; 13. First bevel gear; 14. Fixed rod; 15. Second bevel gear; 16. Threaded rod; 17. Slide groove; 18. Slide sleeve. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. The described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0023] Reference Figures 1-4 A biomass boiler anti-clogging ash discharge device includes a shell 1 and a base 4, with the shell 1 fixed to the base 4. A fixing rod 14 is rotatably connected to the bottom inner wall of the base 4, and a threaded rod 16 is welded to the top of the fixing rod 14. A sliding sleeve 18 is threadedly connected to the outer side of the threaded rod 16. A rotating sleeve 12 is rotatably connected inside the shell 1. Sliding grooves 17 are provided on both sides of the top of the rotating sleeve 12, and the protrusions on both sides of the sliding sleeve 18 are slidably connected to the sliding grooves 17. A power assembly for driving the rotating sleeve 12 to rotate is provided inside the base 4. A serrated spiral blade 10 is fixed to the outer circumference of the rotating sleeve 12 by bolts, and a push plate frame 8 is fixed to the outer circumference of the rotating sleeve 12 by bolts. The push plate frame 8 is in contact with the bottom inner wall of the shell 1. A cone block 11 is fixed to the top of the housing 18 by bolts, and the cone block 11 passes through the rotating sleeve 12. The power component causes the rotating sleeve 12 to drive the sawtooth spiral blade 10 to rotate, thereby bringing the waste material to the bottom of the housing 1. At the same time, the rotation of the rotating sleeve 12 causes the sliding sleeve 18 to rotate. Since the sliding sleeve 18 is threadedly connected to the threaded rod 16, the sliding sleeve 18 moves upward along the threaded rod 16. At the same time, the sliding groove 17 positions and guides the sliding sleeve 18, thereby causing the cone block 11 to move upward to push the material at the connection between the housing 1 and the external pipe to avoid blockage. The bottom of the housing 1 is provided with a discharge port. The bottom of the base 4 is provided with an adjustable blocking component to block the discharge port. The push plate frame 8 rotates to push the waste material at the bottom of the housing 1, so that the waste material is discharged through the discharge port.
[0024] In this utility model, it should be noted that the blocking component includes a turntable 7, which is rotatably connected to the outer circumferential wall of the top of the base 4. Both sides of the turntable 7 are fixed with baffles 6 by bolts, and the baffles 6 can block the discharge port. When material needs to be discharged, the operator moves the baffles 6 to remove the obstruction from the discharge port and open it to the required size, allowing the waste material to be discharged from the housing 1 through the discharge port, thus achieving quantitative material discharge. The power component includes a second bevel gear 15, which is keyed to the outside of the rotating sleeve 12. A motor is fixed to the bottom inner wall of the base 4 by bolts. One end of the motor output shaft is keyed to a first bevel gear 13, and the first bevel gear 13 meshes with the second bevel gear 15. The rotation of the motor causes the first bevel gear 13 to drive the second bevel gear 15. The bevel gear 15 rotates, causing the rotating sleeve 12 to rotate. Multiple scrapers 9 are fixed to the top of the push plate frame 8 by bolts, and the scrapers 9 are in contact with the inner wall of the housing 1. The rotation of the rotating sleeve 12 causes the push plate frame 8 to drive the scrapers 9 to rotate, thereby scraping off the waste material attached to the inner wall of the housing 1, preventing the waste material from being difficult to clean for a long time. The top of the housing 1 is fixed with a flange 2 by bolts, which facilitates the connection of the housing 1 to external pipes and devices. Multiple heat dissipation vents 3 are opened at one end of the base 4, which allows the base 4 to be ventilated and the heat inside the base 4 to be dissipated, preventing the motor from overheating and causing short circuit damage due to insufficient heat dissipation. The bottom of the baffle 6 is fixed with a handle 5 by bolts, which facilitates the movement of the baffle 6 by the operator.
[0025] Working principle: When slag discharge is required, the shell 1 is connected to the external pipeline through the flange 2, allowing the external ash and waste materials to enter the shell 1. Then, the motor is started, and the rotation of the motor causes the first bevel gear 13 to drive the second bevel gear 15 to rotate, thereby causing the rotating sleeve 12 to drive the sawtooth spiral blade 10 to rotate, thus bringing the waste materials to the bottom of the shell 1. At the same time, the rotation of the rotating sleeve 12 causes the sliding sleeve 18 to rotate. Since the sliding sleeve 18 is threadedly connected to the threaded rod 16, the sliding sleeve 18 moves upward along the threaded rod 16. At the same time, the sliding groove 17 positions and guides the sliding sleeve 18, thereby causing the cone block 11 to move upward to push the material at the connection between the shell 1 and the external pipeline to avoid blockage. At the same time, the rotation of the rotating sleeve 12 causes the push plate frame 8 to drive the scraper 9 to rotate, thereby scraping off the waste materials attached to the inner wall of the shell 1. When it is necessary to discharge materials, the operator moves the handle 5 to move the baffle 6 to the required position. At this time, the discharge port is unobstructed and opens to the required size, thus allowing the waste materials to be discharged from the shell 1 through the discharge port.
[0026] Furthermore, although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A biomass boiler anti-clogging ash discharge device, comprising a shell (1) and a base (4), wherein the shell (1) and the base (4) are fixed together, characterized in that, A fixed rod (14) is movably connected to the bottom inner wall of the base (4). A threaded rod (16) is fixedly connected to the top of the fixed rod (14). A sliding sleeve (18) is movably connected to the outer side of the threaded rod (16). A rotating sleeve (12) is movably connected inside the housing (1). Sliding grooves (17) are provided on both sides of the top of the rotating sleeve (12), and the protrusions on both sides of the sliding sleeve (18) are slidably connected to the sliding grooves (17). The base (4) is equipped with a mechanism to drive the rotating sleeve (12) to rotate. The rotating sleeve (12) has a serrated spiral blade (10) fixedly connected to its outer circumference. The rotating sleeve (12) has a push plate frame (8) fixedly connected to its outer circumference. The push plate frame (8) is in contact with the bottom inner wall of the housing (1). The top of the sliding sleeve (18) has a cone block (11) fixedly connected to it. The cone block (11) passes through the rotating sleeve (12). The bottom of the housing (1) has a discharge port. The bottom of the base (4) has an adjustable blocking component for blocking the discharge port.
2. The biomass boiler anti-clogging ash discharge device according to claim 1, characterized in that, The shielding assembly includes a turntable (7), which is rotatably connected to the outer circumferential wall of the top of the base (4). Both sides of the turntable (7) are fixedly connected to baffles (6), and the baffles (6) can block the discharge port.
3. The biomass boiler anti-clogging ash discharge device according to claim 1, characterized in that, The power assembly includes a second bevel gear (15), which is keyed to the outside of the rotating sleeve (12). A motor is fixedly connected to the bottom inner wall of the base (4), and a first bevel gear (13) is keyed to one end of the motor output shaft. The first bevel gear (13) meshes with the second bevel gear (15).
4. The biomass boiler anti-clogging ash discharge device according to claim 1, characterized in that, The top of the push plate frame (8) is fixedly connected with multiple scrapers (9), and the scrapers (9) are in contact with the inner wall of the housing (1).
5. The biomass boiler anti-clogging ash discharge device according to claim 1, characterized in that, A flange (2) is fixedly connected to the top of the housing (1).
6. The biomass boiler anti-clogging ash discharge device according to claim 1, characterized in that, The base (4) has multiple heat dissipation vents (3) at one end.
7. The biomass boiler anti-clogging ash discharge device according to claim 2, characterized in that, A handle (5) is fixedly connected to the bottom of the baffle (6).
Citation Information
Patent Citations
Anti-blocking mechanism for slag tapping pipe of boiler
CN220103157U