Anti-blocking fire grate
By using a stirring rod driven by a servo motor to clean the ash leakage holes of the grate, the problem of grate blockage is solved, achieving automated cleaning and unobstructed flow, and reducing maintenance costs.
Patent Information
- Application Number
- CN202422731980.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-11
AI Technical Summary
The ash drain holes of the grate are easily clogged by ash and unburned fuel particles, resulting in poor gas flow and affecting combustion efficiency.
A stirring rod driven by a servo motor rotates inside the ash leakage hole to clear blockages and keep the grate clear.
It achieves automated cleaning, reduces manual operation, lowers maintenance costs and downtime, and keeps the grate clear.
Smart Images

Figure CN223499587U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grate, specifically an anti-clogging grate. Background Technology
[0002] During the operation of boilers and combustion equipment, the grate is a key component, whose function is to support the fuel and promote the flow of gas during combustion.
[0003] However, when fuel burns, ash and unburned fuel particles accumulate on the ash drain holes of the grate. Over time, these deposits may gradually clog the drain holes, causing poor gas flow and thus affecting combustion efficiency. Utility Model Content
[0004] To overcome the above-mentioned shortcomings, this utility model provides an anti-clogging grate.
[0005] The technical solution adopted by this utility model is as follows:
[0006] An anti-clogging grate includes a furnace chamber. A grate is fixedly connected to the middle of the inner wall of the furnace chamber. An ash discharge port is opened at the bottom of the front side wall of the furnace chamber, located at the bottom of the grate. A furnace door is rotatably connected to the inner wall of the ash discharge port. Ventilation holes are opened on the left, right, and rear sides of the outer wall of the furnace chamber, located below the grate. An installation hole is opened in the middle of the top of the grate, extending to the left and right. Several ash leakage holes are opened on the front and rear sides of the top of the grate, symmetrically distributed front and back. The ash leakage holes are perpendicularly connected to the installation hole. A rotating shaft is provided in the installation hole, with a clearance fit between the rotating shaft and the installation hole. The left and right ends of the rotating shaft are rotatably connected to the left and right inner walls of the furnace chamber. A stirring rod is provided in the ash leakage hole, with a clearance fit between the stirring rod and the ash leakage hole. The stirring rod is fixedly connected to the outer wall of the rotating shaft. A servo motor is fixedly connected to the right outer wall of the furnace chamber. The right end of the rotating shaft penetrates the right side wall of the furnace chamber. The output shaft of the servo motor is fixedly connected to the right end of the rotating shaft.
[0007] The beneficial effects of this utility model are:
[0008] This invention uses a servo motor to drive a stirring rod to agitate the ash leakage hole, which can effectively prevent ash and fuel particles from clogging the ash leakage hole and keep the grate unobstructed. The use of a servo motor drive realizes automated cleaning, reducing the trouble and cost of manual operation.
[0009] The design of the agitator and shaft makes the cleaning process simple and continuous, reducing downtime and maintenance workload caused by blockages. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of this utility model;
[0011] Figure 2 yes Figure 1 Rear view structural diagram;
[0012] Figure 3 yes Figure 1 Top view;
[0013] Figure 4 This is a schematic diagram of the structure of the grate of this utility model.
[0014] The reference numerals in all the attached drawings are as follows: 1. Furnace chamber; 2. Furnace grate; 3. Ash discharge port; 4. Furnace door; 5. Ventilation hole; 6. Mounting hole; 7. Ash leakage hole; 8. Rotating shaft; 9. Stirring rod; 10. Servo motor. Detailed Implementation
[0015] like Figure 1-4 As shown: An anti-clogging grate includes a furnace chamber 1. A grate 2 is fixedly connected to the middle of the inner wall of the furnace chamber 1. An ash discharge port 3 is opened at the bottom of the front side wall of the furnace chamber 1, located at the bottom of the grate 2. A furnace door 4 is rotatably connected to the inner wall of the ash discharge port 3. Ventilation holes 5 are opened on the left, right, and rear sides of the outer wall of the furnace chamber 1, located below the grate 2. An installation hole 6 is opened at the middle of the top of the grate 2, extending to the left and right. Several ash leakage holes 7 are opened on the front and rear sides of the top of the grate 2. The furnace chamber 1 is symmetrically distributed front and back. The ash leakage hole 7 is perpendicularly connected to the mounting hole 6. The mounting hole 6 has a rotating shaft 8, which is clearance-fitted with the mounting hole 6. The left and right ends of the rotating shaft 8 are rotatably connected to the left and right inner walls of the furnace chamber 1. The ash leakage hole 7 has a stirring rod 9, which is clearance-fitted with the ash leakage hole 7. The stirring rod 9 is fixedly connected to the outer wall of the rotating shaft 8. The right outer wall of the furnace chamber 1 is fixedly connected to the servo motor 10. The right end of the rotating shaft 8 passes through the right side wall of the furnace chamber 1. The output shaft of the servo motor 10 is fixedly connected to the right end of the rotating shaft 8.
[0016] During combustion in the furnace 1, ash and unburned fuel particles may clog the ash leakage hole 7 on the grate 2. At this time, the servo motor 10, which is fixedly installed on the right side wall of the furnace 1, is activated.
[0017] The rotation of the servo motor 10 drives the rotating shaft 8 to rotate. The rotation of the rotating shaft 8 causes the stirring rod 9, which is fixedly connected to its outer wall, to rotate together. Since the stirring rod 9 is in clearance fit with the ash leakage hole 7, they will pass through the ash leakage hole 7 and rotate left and right at a certain angle, thereby cleaning away ash or fuel particles that may clog the ash leakage hole.
[0018] After being cleaned by the stirring rod 9, the ash leakage hole 7 remains unobstructed. Ash and fine fuel particles can fall through the ash leakage hole 7 into the space below the grate 2 and be discharged from the furnace 1 through the ash discharge port 3 (when the furnace door 4 is open). This utility model only protects the mechanical parts; the functions implemented by the software control part are not within the scope of protection of this utility model.
Claims
1. An anti-clogging grate, characterized in that, The furnace includes a furnace chamber (1), a grate (2) is fixedly connected to the middle of the inner wall of the furnace chamber (1), an ash discharge port (3) is opened at the bottom of the front side wall of the furnace chamber (1), the ash discharge port (3) is located at the bottom of the grate (2), a furnace door (4) is rotatably connected to the inner wall of the ash discharge port (3), ventilation holes (5) are opened on the left, right and rear sides of the outer wall of the furnace chamber (1), the ventilation holes (5) are located below the grate (2), an installation hole (6) is opened at the middle of the top of the grate (2), the installation hole (6) extends to the left and right, and several ash leakage holes (7) are opened on the front and rear sides of the top of the grate (2), the ash leakage holes (7) are symmetrically distributed front and back. The cloth, the ash leakage hole (7) is perpendicular to the mounting hole (6), the mounting hole (6) has a rotating shaft (8), the rotating shaft (8) is clearance-fitted with the mounting hole (6), the left and right ends of the rotating shaft (8) are rotatably connected to the left and right inner walls of the furnace (1), the ash leakage hole (7) has a stirring rod (9), the stirring rod (9) is clearance-fitted with the ash leakage hole (7), the stirring rod (9) is fixedly connected to the outer wall of the rotating shaft (8), the right outer wall of the furnace (1) is fixedly connected to the right side, the right end of the rotating shaft (8) penetrates the right side wall of the furnace (1), and the output rotating shaft of the servo motor (10) is fixedly connected to the right end of the rotating shaft (8).