Biomass combustion machine movable grate two-stage device
By dividing the biomass burner grate into two sections and using uniform and differential oscillating components to control the grate movement, the problem of incomplete combustion of biomass fuel is solved, achieving efficient energy utilization and efficient equipment operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG BOEN ENERGY SAVING & ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-07-17
AI Technical Summary
Existing biomass burner grates suffer from energy waste and equipment damage due to incomplete combustion of biomass fuel during the combustion process, and cannot simultaneously meet the heat output requirements.
The biomass burner adopts a two-stage moving grate device, which divides the grate into two sections. The grate movement speed of the first section and the second section are controlled by a uniform swing component and a differential swing component, respectively, so that the biomass fuel is completely gasified and slowly burned on the grate, producing a large amount of calorific value and completely burned ash.
It achieves complete combustion of biomass fuel, saves energy, improves equipment efficiency, and avoids energy waste and equipment damage.
Smart Images

Figure CN224516762U_ABST
Abstract
Claims
1. A moving grate two-stage apparatus for a biomass combustor, characterized by, include: Two frames (1), and a number of mounting rods (11) are respectively provided between the two frames (1). Each mounting rod (11) is rotatably connected to a grate (12). The number of mounting rods (11) and the number of grate (12) can be divided into a first section (13) and a second section (14). The first section (13) consists of multiple pairs of grate (12) and multiple pairs of mounting rods (11) located at a higher position. The second section (14) consists of three grate (12) and three mounting rods (11) on the lower side. A uniform swing assembly is provided at the position of the first interval segment (13) to make the first interval segment (13) swing at a uniform speed. The uniform swing assembly includes: a rotating rod (2), a reducer (21), a moving plate (22), a connecting block (23), a fixed rod a (24), and a crank mechanism (25). The differential swing assembly is located at the second interval segment (14) and is used to make the second interval segment (14) swing at low speed. The differential swing assembly includes: a partition (3), a heat insulation frame (31), a cylinder (32), a fixed rod b (33), and a swing rod (34).
2. The moving grate two-stage apparatus of a biomass combustor of claim 1, wherein, A rotating rod (2) is rotatably connected to one side of the inner wall of the frame (1). A speed reducer (21) is fixedly installed on the outer side of one of the frames (1). The drive shaft of the speed reducer (21) is connected to one end of the rotating rod (2). A moving plate (22) is provided below the first section (13). A connecting block (23) is fixedly connected to the higher end of the moving plate (22). A fixed rod a (24) is fixedly connected to one side of the connecting block (23). A crank mechanism (25) is connected between the outside of the fixed rod a (24) and one end of the rotating rod (2).
3. The moving grate two-stage apparatus of a biomass combustor of claim 1, wherein, A partition (3) is fixedly connected between the two frames (1) near the lower part of the second section (14). A heat insulation frame (31) is provided on one side of the partition (3). The two ends of the heat insulation frame (31) are respectively connected to the inner walls of the two frames (1). Two cylinders (32) are fixedly installed inside the heat insulation frame (31). A through hole is opened on one side of the heat insulation frame (31) to allow the piston rods of the two cylinders (32) to move. A fixed rod b (33) is fixedly connected between the inner walls of the two sides of the second section (14). Two swing rods (34) are rotatably connected to the outside of the fixed rod b (33).
4. The moving grate two-stage apparatus of a biomass combustor of claim 1, wherein, Guide plates (26) are fixedly connected to the inner walls of the two frames (1) on opposite sides. Guide grooves (27) are opened on opposite sides of the moving plate (22). The two guide plates (26) extend into the guide grooves (27) on opposite sides. Three support blocks (28) are fixedly connected to the bottom of the moving plate (22). Three support rollers (29) are rotatably connected between the inner walls of the two frames (1) on opposite sides. The three support rollers (29) are located at the middle position below the support blocks (28).
5. The moving grate two-stage apparatus of a biomass combustor of claim 1, wherein, In the first interval (13), the bottom of each of the even-numbered mounting rods (11) is fixedly connected to a pair of connecting rods (210), and the bottom ends of the multiple pairs of connecting rods (210) are connected to the top of the moving plate (22). The opposite ends of the odd-numbered mounting rods (11) are fixedly connected to the two frames (1) respectively.
6. The moving grate two-stage apparatus of a biomass combustor of claim 1, wherein, One end of the piston rod of each of the two cylinders (32) is connected to the bottom end of each of the two rocker arms (34), and the top end of each of the two rocker arms (34) is connected to the even-numbered mounting rod (11) in the second interval (14).
7. The moving grate two-stage apparatus of a biomass combustor of claim 1, wherein, Multiple connecting plates (4) are connected between the two frames (1). A feeding platform (41) is fixedly connected between the two frames (1) near the higher end. The feeding platform (41) is inclined and located on top of the grate (12) at the highest point.