Extrusion mechanism for RDF fuel rod forming

Abstract

The utility model relates to the field of RDF fuel rods, and discloses an extrusion mechanism for RDF fuel rod forming, which comprises a barrel, a first rotating shaft rotationally connected to the barrel, and a motor mounted at the end of the barrel and used for driving the first rotating shaft to rotate, an end cover is arranged on the inner side of the end, away from the motor, of the barrel, and the first rotating shaft penetrates through the barrel. The end, away from the motor, of the barrel is rotationally connected with a second rotating shaft, the second rotating shaft is hollow and sleeves the first rotating shaft, the first rotating shaft is in linkage with the second rotating shaft, and a scraper is arranged on the outer ring of the second rotating shaft and tangent to the end cover. The utility model has the following advantages and effects: the first rotating shaft drives the second rotating shaft to rotate, the second rotating shaft drives the scraper to rotate, the second rotating shaft and the first rotating shaft rotate and stop at the same time, and no noise is generated and equipment is not damaged during rotation.

Description

Technical Field

[0001] The utility model relates to the technical field of RDF fuel rods, in particular to an extrusion mechanism for forming RDF fuel rods. Background Art

[0002] Waste-derived fuel (RDF) is a solid fuel that is easy to store and transport and is made by converting garbage into solid fuel with uniform properties through processes such as crushing, sorting, drying and granulation. This waste-derived fuel has the characteristics of uniform size, low moisture content, high combustion efficiency and low pollution, and is widely used in heating projects and power generation projects.

[0003] The Chinese utility model patent with authorization announcement number CN218554004U discloses an RDF forming device with a vibration mechanism, including a cylinder, a main shaft rotatably connected to the inside of the cylinder, and a spiral blade fixedly arranged on the main shaft. A first motor is installed at one end of the cylinder, the first motor is connected to the main shaft, and a vibration shaft is arranged at the end of the cylinder away from the first motor. The vibration shaft is provided with a vibration disk, and the vibration head is driven by the vibration disk to vibrate the end cover and vibrate the attachments on the end cover. However, the prior art still has the following technical problems: the vibration shaft needs to emit a large vibration to vibrate the compacted material on the end cover, but it will generate a large noise, and the connection between the main shaft and the cylinder is prone to failure under long-term vibration. Utility Model Content

[0004] The utility model aims to provide an extrusion mechanism for RDF fuel rod molding, which has the effects of being noise-free, preventing equipment damage and efficiently cleaning end cover plate aggregates.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: an extrusion mechanism for RDF fuel rod molding, including a cylinder, a first rotating shaft rotatably connected to the cylinder, and a motor installed at the end of the cylinder for driving the first rotating shaft to rotate, an end cover is arranged on the inner side of the cylinder away from the end of the motor, the first rotating shaft passes through the cylinder, and the end of the cylinder away from the motor is rotatably connected to the second rotating shaft, the second rotating shaft is hollowly arranged and sleeved on the first rotating shaft, the first rotating shaft and the second rotating shaft are linked, a scraper is arranged on the outer ring of the second rotating shaft, and the scraper is tangent to the end cover.

[0006] By adopting the above technical solution, a second rotating shaft is set, the second rotating shaft is outermostly arranged on the first rotating shaft and the second rotating shaft and the first rotating shaft are linked. When the first rotating shaft rotates under the drive of the motor, the first rotating shaft drives the second rotating shaft to rotate, and the second rotating shaft drives the scraper to rotate. By setting the scraper tangent to the end cover, the scraper can scrape off the caked materials on the surface of the end cover when it rotates, thereby achieving the purpose of cleaning the caked materials on the surface of the end cover without vibration.

[0007] The utility model is further configured as follows: the first rotating shaft is coaxially arranged with the second rotating shaft, a driving gear is coaxially arranged at the end of the first rotating shaft away from the motor, a driven gear is rotatably arranged at the end of the cylinder body close to the driving gear, the driving gear is meshed with the driven gear, and the driven gear is linked to the second rotating shaft.

[0008] By adopting the above technical solution, by setting a driving gear and a driven gear, when the driving gear is engaged with the driven gear, the driving gear and the driven gear rotate in opposite directions at the same time, and the driven gear drives the second rotating shaft to rotate, the purpose of linkage between the first rotating shaft and the second rotating shaft can be achieved.

[0009] The utility model is further configured as follows: the end of the cylinder is rotatably connected to a third rotating shaft, the driven gear is coaxially arranged on the third rotating shaft, the third rotating shaft is coaxially arranged with a driving wheel, the second rotating shaft is coaxially arranged with a driven wheel, and the driving wheel and the driven wheel are both configured as pulleys and connected by belts.

[0010] By adopting the above technical solution, a driving wheel and a driven wheel are set, the driven gear drives the third shaft to rotate, the third shaft drives the driving wheel to rotate, the driving wheel and the driven wheel are both set as pulleys and the driving wheel drives the driven wheel to rotate, so that the second shaft and the third shaft can rotate simultaneously and in the same direction, so the first shaft and the second shaft can rotate in opposite directions at the same time, when the first shaft drives the spiral blade to extrude the material, the second shaft drives the scraper to clean the end cover, and the compacted material scraped off on the basis of the reverse movement is not easy to continue to be extruded, but will be squeezed out accordingly, so the purpose of the scraper and the first shaft rotating in the opposite direction can be achieved.

[0011] The utility model is further configured as follows: the diameter of the driving gear is smaller than the diameter of the driven gear.

[0012] By adopting the above technical solution, if the scraper rotates too fast during the cleaning process, it will affect the squeezing of the material by the first rotating shaft and the spiral blade, and will also generate greater resistance during the rapid rotation, making the scraper easy to be damaged. The driving gear drives the driven gear to rotate, which can achieve the purpose of the driving gear rotating at a speed greater than the driven gear. The driving gear and the driven gear are coaxially arranged on the first rotating shaft and the third rotating shaft respectively, and the second rotating shaft is driven to rotate by the third rotating shaft. Because the third rotating shaft and the second rotating shaft rotate in the same direction at the same time, it can achieve the purpose of the scraper rotating in the opposite direction to the first rotating shaft while the scraper speed is less than the first rotating shaft speed.

[0013] The utility model is further configured as follows: the diameters of the driving wheel and the driven wheel are equal.

[0014] By adopting the above technical solution, the driving wheel and the driven wheel rotate in the same direction and at the same speed at the same time. The driving wheel is arranged on the outer ring of the third rotating shaft, and the driven wheel is arranged on the outer ring of the second rotating shaft. Therefore, the third rotating shaft drives the second rotating shaft to rotate in the same direction and at the same speed at the same time, which can achieve the purpose of the scraper and the first rotating shaft rotating in the opposite direction and at a differential speed at the same time.

[0015] The utility model is further configured as follows: a support plate is provided at one end of the cylinder away from the motor, and a first bearing is provided between the first rotating shaft and the support plate.

[0016] By adopting the above technical solution, by setting a support plate, the two ends of the first rotating shaft are rotatably connected to the cylinder and the support plate respectively, and the support plate is fixedly connected to the cylinder, and the first rotating shaft is rotatably connected to the support plate through the first bearing, thereby achieving the purpose of stable rotation of the first rotating shaft.

[0017] The utility model is further configured as follows: the second rotating shaft passes through the end cover, and a second bearing is provided between the second rotating shaft and the cylinder.

[0018] By adopting the above technical solution, the two sides of the second rotating shaft are rotatably connected to the end of the cylinder and the end cover respectively. Since the second rotating shaft is sleeved on the first rotating shaft, the scraper can be set.

[0019] The utility model is further configured as follows: the scraper is fixedly connected to the outer ring of the second rotating shaft, and the length of the scraper is smaller than the distance from the outer ring of the second rotating shaft to the inner ring of the cylinder.

[0020] By adopting the above technical solution, the length of the scraper cannot interfere with the rotation of the third rotating shaft.

[0021] The utility model is further configured as follows: there are a plurality of scrapers, a plurality of scrapers are provided with an inclined surface on one side facing away from the end cover, a connecting plate is connected between the plurality of scrapers, a side of the connecting plate close to the end cover is tangent to the end cover, and a side away from the end cover is provided with an inclined surface.

[0022] By adopting the above technical solution, by setting an inclined surface, one side of the scraper is tangent to the end cover and the other side is set as an inclined surface. When the scraper receives resistance from the material extrusion during rotation, the pressure received by the scraper is dispersed along the inclined surface, which can reduce the resistance. Several scrapers rotate at the same time and are connected by a connecting plate, which can reduce the resistance of the scraper and achieve the purpose of improving the stability of the scraper during rotation.

[0023] The utility model is further configured as follows: a third bearing is provided between the third rotating shaft and the support plate.

[0024] By adopting the above technical solution, the purpose of the third rotating shaft being rotatably connected to the end of the cylinder can be achieved.

[0025] The beneficial effects of the utility model are as follows: the scraper is tangent to the end cover, the first rotating shaft drives the third rotating shaft to rotate in the opposite direction at the same time through the gear, the diameters of the driving gear and the driven gear are different, so the third rotating shaft rotates differentially with the first rotating shaft, the third rotating shaft drives the second rotating shaft to rotate in the same direction at the same time through the driving wheel and the driven wheel, because the driving wheel and the driven wheel have the same diameter, the third rotating shaft rotates at the same speed as the second rotating shaft, so the second rotating shaft and the first rotating shaft rotate in the opposite direction at the same time differentially; when the first rotating shaft drives the spiral blade to rotate, the first rotating shaft drives the second rotating shaft to drive the scraper to rotate in the opposite direction, the scraper rotates at a relatively low speed and can rotate smoothly at the end cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a schematic diagram of the cross-sectional structure of the overall structure of the utility model.

[0028] Figure 2 yes Figure 1 Schematic diagram of the local structure.

[0029] Figure 3 It is a partial structural schematic diagram of the scraper of the utility model.

[0030] In the figure, 1, cylinder; 11, motor; 12, end cover; 13, support plate; 2, first rotating shaft; 21, driving gear; 22, first bearing; 3, second rotating shaft; 31, scraper; 32, driven wheel; 33, second bearing; 34, connecting plate; 35, inclined plane; 4, third rotating shaft; 41, driven gear; 42, driving wheel; 43, third bearing. DETAILED DESCRIPTION

[0031] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Embodiment, an extrusion mechanism for forming RDF fuel rods, such as Figure 1-Figure 3As shown, it includes a cylinder 1, which is cylindrical and hollow, with a motor 11 installed at the end of the cylinder 1, and the cylinder 1 is rotatably connected with a first rotating shaft 2, which passes through both ends of the cylinder 1, and a support plate 13 is arranged at the end of the cylinder 1 away from the motor 11, and a first bearing 22 is rotatably arranged between the first rotating shaft 2 and the support plate 13, and a driving gear 21 is coaxially arranged at the end of the first rotating shaft 2 close to the support plate 13, and the output end of the motor 11 is coaxially connected to the first rotating shaft 2, and the end of the cylinder 1 away from the motor 11 is rotatably connected with a second rotating shaft 3, and a second bearing 33 is arranged between the second rotating shaft 3 and the cylinder 1, and an end cover 12 is arranged on the inner side of the end, and the second rotating shaft 3 passes through the end cover 12, and the second rotating shaft 3 is hollow and is sleeved on the first rotating shaft 2, and the second rotating shaft 3 is coaxial with the first rotating shaft 2 The second rotating shaft 3 is fixedly provided with a scraper 31, the side of the scraper 31 close to the end cover 12 is tangent to the end cover 12, the side of the scraper 31 away from the end cover 12 is provided with a bevel 35, the number of scrapers 31 is several, a connecting plate 34 is connected between the several scrapers 31, and the connecting plate 34 is provided with a bevel 35; the third rotating shaft 4 is rotatably connected between the end of the cylinder 1 and the support plate 13, a third bearing 43 is rotatably provided between the support plate 13 and the third rotating shaft 4, the third rotating shaft 4 is coaxially provided with a driven gear 41, the diameter of the driving gear 21 is smaller than the diameter of the driven gear 41, the third rotating shaft 4 is coaxially provided with a driving wheel 42, the second rotating shaft 3 is coaxially provided with a driven wheel 32, the driving wheel 42 and the driven wheel 32 are both configured as pulleys and connected by belts, and the driving wheel 42 and the driven wheel 32 have the same diameter.

[0033] Its working principle is: start the motor 11, the motor 11 rotates to drive the first shaft 2 to rotate, the first shaft 2 drives the three shafts to rotate in the opposite direction at the same time, the speed of the third shaft 4 is less than the speed of the first shaft 2, the third shaft 4 drives the second shaft 3 to rotate at the same speed, and the material is poured into the cylinder 1, and is squeezed to the end cover 12 through the rotation of the spiral blade and squeezed downward. At this time, compacted materials will be generated on the end cover 12. At this time, the second shaft 3 drives the scraper 31 to rotate, and the scraper 31 scrapes off the compacted materials on the end cover 12. When the material is squeezed toward the scraper 31 and the connecting plate 34, the inclined surface 35 disperses the pressure, so that the scraper 31 can rotate normally.

Claims

1. An extrusion mechanism for forming RDF fuel rods, comprising a barrel (1), a first rotating shaft (2) rotatably connected to the barrel (1), and a motor (11) mounted at the end of the barrel (1) for driving the first rotating shaft (2) to rotate, wherein an end cap (12) is arranged on the inner side of the barrel (1) away from the end of the motor (11), and characterized in that: The first rotating shaft (2) passes through the cylinder (1); the end of the cylinder (1) away from the motor (11) is rotatably connected to the second rotating shaft (3); the second rotating shaft (3) is hollow and is sleeved on the first rotating shaft (2); the first rotating shaft (2) and the second rotating shaft (3) are linked; a scraper (31) is arranged on the outer ring of the second rotating shaft (3); and the scraper (31) is tangent to the end cover (12).

2. The extrusion mechanism for forming RDF fuel rods according to claim 1, characterized in that: The first rotating shaft (2) and the second rotating shaft (3) are coaxially arranged, a driving gear (21) is coaxially arranged at the end of the first rotating shaft (2) away from the motor (11), a driven gear (41) is rotatably arranged at the end of the cylinder (1) close to the driving gear (21), the driving gear (21) is meshed with the driven gear (41), and the driven gear (41) is linked to the second rotating shaft (3).

3. The extrusion mechanism for forming RDF fuel rods according to claim 2, characterized in that: The end of the cylinder (1) is rotatably connected to a third rotating shaft (4); the driven gear (41) is coaxially arranged on the third rotating shaft (4); the third rotating shaft (4) is coaxially arranged with a driving wheel (42); the second rotating shaft (3) is coaxially arranged with a driven wheel (32); the driving wheel (42) and the driven wheel (32) are both configured as pulleys and are connected via a belt.

4. The extrusion mechanism for forming RDF fuel rods according to claim 3, characterized in that: The diameter of the driving gear (21) is smaller than the diameter of the driven gear (41).

5. The extrusion mechanism for forming RDF fuel rods according to claim 4, characterized in that: The driving wheel (42) and the driven wheel (32) have the same diameter.

6. The extrusion mechanism for forming RDF fuel rods according to claim 5, characterized in that: A support plate (13) is provided at one end of the cylinder (1) away from the motor (11), and a first bearing (22) is provided between the first rotating shaft (2) and the support plate (13).

7. The extrusion mechanism for forming RDF fuel rods according to claim 6, characterized in that: The second rotating shaft (3) passes through the end cover (12), and a second bearing (33) is provided between the second rotating shaft (3) and the cylinder (1).

8. The extrusion mechanism for forming RDF fuel rods according to claim 7, characterized in that: The scraper (31) is fixedly connected to the outer ring of the second rotating shaft (3), and the length of the scraper (31) is smaller than the distance from the outer ring of the second rotating shaft (3) to the inner ring of the cylinder (1).

9. The extrusion mechanism for forming RDF fuel rods according to claim 8, characterized in that: The scrapers (31) are provided in a plurality of numbers, and a slope (35) is provided on a side of the scrapers (31) facing away from the end cover (12). A connecting plate (34) is connected between the scrapers (31), and a side of the connecting plate (34) close to the end cover (12) is tangent to the end cover (12), and a side away from the end cover (12) is provided with a slope (35).

10. The extrusion mechanism for forming RDF fuel rods according to claim 9, characterized in that: A third bearing (43) is provided between the third rotating shaft (4) and the supporting plate (13).

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