Centrifugal drum structure for centrifugal sand making

Abstract

The utility model discloses a centrifugal drum structure for centrifugal sand making, including installation cylinder and inner tube, be equipped with three groups annular distribution's locating rod in the installation cylinder, three groups locating rod all are connected with installation cylinder sliding, three groups locating rod all are connected with inner tube sliding, the adjusting disc is rotatably installed in the installation cylinder, is equipped with three groups annular distribution's guide groove on the adjusting disc, three groups guide groove are corresponded to set with locating rod, three groups locating rod all are fixedly installed with guide rod, the guide rod is connected with adjusting disc sliding through guide groove, the installation cylinder is rotatably installed with installation shaft, through setting three groups annular distribution's locating rod, and utilize the adjusting disc with guide groove to drive it synchronously, realized three groups locating rod's synchronous radial motion, and this design makes the inner tube can be evenly, firmly clamped and locked in the installation cylinder center, has guaranteed dynamic balance.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal drum technology, specifically a centrifugal drum structure for centrifugal sand making. Background Technology

[0002] Centrifugal sand making machines use the high-speed rotation of a centrifugal drum to cause materials to collide and rub violently against the inner wall of the drum and between the materials themselves under the action of centrifugal force, thereby achieving crushing and sand making. The wear-resistant liner plate on the inner wall of the drum is a core vulnerable component that directly affects the service life and sand making efficiency of the equipment. In the existing technology, the wear-resistant liner plate of the centrifugal drum mostly adopts an integral structure and is fixed to the drum body by welding.

[0003] In existing technologies, integral liners need to be replaced entirely after partial wear, and the unworn parts are also discarded, resulting in material waste. When replacing welded liners, the weld slag must be removed first, and the concentricity of the drum needs to be calibrated after re-welding, resulting in long downtime. To address these issues, we propose a centrifugal drum structure for centrifugal sand making. Utility Model Content

[0004] The purpose of this utility model is to provide a centrifugal drum structure for centrifugal sand making to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a centrifugal rotary drum structure for centrifugal sand making, comprising an installation cylinder and an inner cylinder. The installation cylinder contains three sets of annularly distributed positioning rods, all three sets of positioning rods being slidably connected to the installation cylinder and the inner cylinder. An adjusting disc is rotatably installed inside the installation cylinder. The adjusting disc has three sets of annularly distributed guide grooves, each set corresponding to a positioning rod. Guide rods are fixedly installed on each of the three positioning rods, and the guide rods are slidably connected to the adjusting disc via the guide grooves. An installation shaft is rotatably installed on the installation cylinder, and two sets of symmetrically distributed locking wheels are sleeved on the installation shaft. The installation cylinder contains two sets of locking claws corresponding to the locking wheels, and the two sets of locking claws are respectively engaged with the corresponding locking wheels.

[0006] As a further preferred embodiment of this technical solution, a toothed ring is fitted onto the adjusting disc, and a drive wheel is provided inside the mounting cylinder. The drive wheel is meshed with the toothed ring, and the drive wheel is rotatably connected to the mounting cylinder via a mounting shaft.

[0007] As a further preferred embodiment of this technical solution, both sets of locking claws are rotatably connected to the mounting cylinder via rotating rods. Each set of rotating rods is fitted with a first torsion spring, and the two ends of the first torsion springs are respectively fixedly connected to the mounting cylinder and the locking claws. Each set of rotating rods is fitted with gears, and two sets of racks that mesh with the gears are slidably installed inside the mounting cylinder.

[0008] As a further preferred embodiment of this technical solution, a connecting frame is slidably installed inside the mounting cylinder. The connecting frame is fixedly connected to two sets of racks. A locking block is fixedly installed on the connecting frame. A fixing rod corresponding to the locking block is fixedly installed inside the mounting cylinder. Two sets of sliding rods corresponding to the connecting frame are fixedly installed inside the mounting cylinder.

[0009] As a further preferred embodiment of this technical solution, two sets of symmetrically distributed fixing clips are sleeved on the fixing rod, and both sets of fixing clips are movably engaged with the locking block. Two sets of symmetrically distributed second torsion springs are sleeved on the fixing rod, and the two ends of the second torsion springs are respectively fixedly connected to the fixing clips and the mounting cylinder.

[0010] As a further preferred embodiment of this technical solution, the connecting frame is slidably sleeved with the slide rod, and two sets of symmetrically distributed springs are sleeved on the slide rod, with the two ends of the two sets of springs respectively fixedly connected to the connecting frame and the mounting cylinder.

[0011] This utility model provides a centrifugal drum structure for centrifugal sand making, which has the following beneficial effects: This invention utilizes three sets of ring-shaped positioning rods, synchronously driven by an adjusting disc with guide grooves, to achieve synchronized radial movement of the three positioning rods. This design ensures that the inner cylinder is evenly and securely clamped and locked in the center of the mounting cylinder, guaranteeing dynamic balance. When the inner cylinder or liner needs to be replaced, simply rotating the adjusting disc in the opposite direction causes all positioning rods to retract radially synchronously, quickly releasing the inner cylinder from its fixation. This facilitates convenient disassembly of the inner cylinder, greatly simplifying the maintenance process and improving work efficiency.

[0012] This invention utilizes a locking mechanism consisting of two sets of locking wheels and locking claws. This mechanism automatically engages after the mounting shaft is adjusted to the correct position, effectively preventing reverse rotation or displacement during operation. This ensures a continuous and stable locking force of the positioning rod on the inner cylinder, guaranteeing the safety and reliability of the centrifugal operation. When unlocking is required, the locking claws can be remotely disengaged from the locking wheels by pulling the connecting frame, which is simple to operate. Simultaneously, the locking block on the connecting frame cooperates with the fixing clamp on the fixing rod, achieving self-locking after pulling and stabilizing the connecting frame in the unlocked position. This facilitates subsequent maintenance operations and further reduces downtime. Attached Figure Description

[0013] Figure 1 This is a front view schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the present invention with the mounting cylinder and positioning rod separated. Figure 3 This utility model Figure 2 Enlarged structural diagram of A in the middle; Figure 4 This is a schematic diagram of the locking wheel and locking pawl of this utility model; Figure 5 This utility model Figure 4 A magnified schematic diagram of the structure of B in the middle.

[0014] In the diagram: 1. Mounting cylinder; 2. Inner cylinder; 3. Positioning rod; 4. Adjusting disc; 5. Guide groove; 6. Guide rod; 7. Gear ring; 8. Drive wheel; 9. Mounting shaft; 10. Locking wheel; 11. Locking pawl; 12. Rotating rod; 13. Gear; 14. Rack; 15. First torsion spring; 16. Connecting frame; 17. Slide rod; 18. Spring; 19. Locking block; 20. Fixing rod; 21. Fixing clamp; 22. Second torsion spring. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0016] This utility model provides a technical solution: such as Figure 1 , Figure 2 and Figure 3 As shown in this embodiment, a centrifugal rotary drum structure for centrifugal sand making includes an installation cylinder 1 and an inner cylinder 2. The installation cylinder 1 has three sets of annularly distributed positioning rods 3, all of which are slidably connected to the installation cylinder 1 and the inner cylinder 2. An adjusting disc 4 is rotatably installed inside the installation cylinder 1. The adjusting disc 4 has three sets of annularly distributed guide grooves 5, which correspond to the positioning rods 3. Guide rods 6 are fixedly installed on each of the three positioning rods 3, and the guide rods 6 are slidably connected to the adjusting disc 4 through the guide grooves 5. An installation shaft 9 is rotatably installed on the installation cylinder 1, and two sets of symmetrically distributed locking wheels 10 are sleeved on the installation shaft 9. The installation cylinder 1 has two sets of locking claws 11 corresponding to the locking wheels 10. The locking claws 11 are respectively engaged with the corresponding locking wheels 10. The adjusting disc 4 is fitted with a toothed ring 7. The mounting cylinder 1 is provided with a drive wheel 8. The drive wheel 8 is engaged with the toothed ring 7. The drive wheel 8 is rotatably connected to the mounting cylinder 1 through the mounting shaft 9. By rotating the mounting shaft 9, the drive wheel 8 is driven to engage with the toothed ring 7, thereby driving the adjusting disc 4 to rotate. The three sets of annular guide grooves 5 opened on the adjusting disc 4 cooperate with the guide rods 6 fixed to the positioning rods 3, converting the circumferential motion of the disc body into the synchronous radial linear motion of the three sets of positioning rods 3. This synchronous radial expansion or contraction motion allows the positioning rods 3 to evenly press against or disengage from the outer wall of the inner cylinder 2, thereby achieving precise centering, stable clamping, or rapid release of the inner cylinder 2 at the center of the mounting cylinder 1, ensuring the balance of power transmission and the convenience of installation and maintenance.

[0017] like Figure 4 and Figure 5 As shown, both sets of locking claws 11 are rotatably connected to the mounting cylinder 1 via rotating rods 12. A first torsion spring 15 is sleeved on each set of rotating rods 12, and both ends of the first torsion springs 15 are fixedly connected to the mounting cylinder 1 and the locking claws 11, respectively. Gears 13 are sleeved on each set of rotating rods 12. Two sets of racks 14, meshing with the gears 13, are slidably installed inside the mounting cylinder 1. A connecting frame 16 is slidably installed inside the mounting cylinder 1, and the connecting frame 16 is fixedly connected to both sets of racks 14. A locking block 19 is fixedly installed on the mounting cylinder 1. A fixing rod 20 corresponding to the locking block 19 is fixedly installed inside the mounting cylinder 1. Two sets of sliding rods 17 corresponding to the connecting frame 16 are fixedly installed inside the mounting cylinder 1. Two sets of symmetrically distributed fixing clips 21 are sleeved on the fixing rods 20. Both sets of fixing clips 21 are movably engaged with the locking block 19. Two sets of symmetrically distributed second torsion springs 22 are sleeved on the fixing rods 20. The two ends of the second torsion springs 22 are fixedly connected to the fixing clips 21 and the mounting cylinder 1, respectively. The connecting frame 16 and the sliding rod 17 are slidably sleeved together. Two sets of symmetrically distributed springs 18 are sleeved on the sliding rod 17. The two ends of the two sets of springs 18 are respectively fixedly connected to the connecting frame 16 and the mounting cylinder 1. After the mounting shaft 9 is adjusted to the position, the two sets of locking wheels 10 on it automatically engage with the locking pawl 11 under the action of the first torsion spring 15, forming a reverse self-locking, which effectively prevents the mounting shaft 9 from reversing due to vibration or centrifugal force, and ensures the continuous and reliable locking force of the positioning rod 3. When it is necessary to disassemble the inner cylinder 2, the connecting frame is pulled outward. 16, driving the racks 14 on both sides to move linearly, driving the gear 13 fixed to the rotating rod 12 to rotate, thereby forcing the locking pawl 11 to overcome the elastic force of the first torsion spring 15 and disengage from the locking wheel 10, releasing the lock on the mounting shaft 9. At this time, the locking block 19 on the connecting frame 16 is pressed between the two sets of fixing clamps 21 during the movement and is tightly locked under the action of the second torsion spring 22, realizing the temporary fixation of the position of the connecting frame 16, ensuring that the locking mechanism maintains a stable unlocked state during maintenance, and facilitating the operator to safely carry out subsequent operations.

[0018] This utility model provides a centrifugal rotary drum structure for centrifugal sand making. The specific working principle is as follows: Rotating the mounting shaft 9 drives the drive wheel 8 to mesh with the gear ring 7, causing the adjusting disc 4 to rotate. The three sets of annular guide grooves 5 on the adjusting disc 4 cooperate with the guide rods 6 fixed to the positioning rods 3, converting the circular motion of the disc into synchronous radial linear motion of the three positioning rods 3. This synchronous radial expansion or contraction motion allows the positioning rods 3 to evenly press against or disengage from the outer wall of the inner cylinder 2, thereby achieving precise centering, stable clamping, or rapid release of the inner cylinder 2 at the center of the mounting cylinder 1. This ensures the balance of power transmission and the convenience of installation and maintenance. After the mounting shaft 9 is adjusted to the correct position, the two sets of locking wheels 10 on it, under the action of the first torsion spring 15, engage with the locking claws 11. The dynamic engagement forms a reverse self-locking mechanism, effectively preventing the mounting shaft 9 from reversing due to vibration or centrifugal force, ensuring the continuous and reliable locking force of the positioning rod 3. When the inner cylinder 2 needs to be disassembled, the connecting frame 16 is pulled outward, causing the racks 14 on both sides to move linearly, driving the gear 13 fixed to the rotating rod 12 to rotate, thereby forcing the locking pawl 11 to overcome the elastic force of the first torsion spring 15 and disengage from the locking wheel 10, releasing the lock on the mounting shaft 9. At this time, the locking block 19 on the connecting frame 16 is pressed between the two sets of fixing clamps 21 during the movement and is tightly locked under the action of the second torsion spring 22, realizing the temporary fixation of the position of the connecting frame 16, ensuring that the locking mechanism maintains a stable unlocked state during maintenance, facilitating the operator to safely carry out subsequent operations.

[0019] 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 centrifugal rotary drum structure for centrifugal sand making, characterized in that: The device includes an installation cylinder (1) and an inner cylinder (2). The installation cylinder (1) is provided with three sets of annularly distributed positioning rods (3). All three sets of positioning rods (3) are slidably connected to the installation cylinder (1) and to the inner cylinder (2). An adjustment plate (4) is rotatably installed inside the installation cylinder (1). The adjustment plate (4) is provided with three sets of annularly distributed guide grooves (5). The three sets of guide grooves (5) are correspondingly arranged with the positioning rods (3). Guide rods (6) are fixedly installed on the three sets of positioning rods (3). The guide rods (6) are slidably connected to the adjustment plate (4) through the guide grooves (5). An installation shaft (9) is rotatably installed on the installation cylinder (1). Two sets of symmetrically distributed locking wheels (10) are sleeved on the installation shaft (9). The installation cylinder (1) is provided with two sets of locking claws (11) corresponding to the locking wheels (10). The two sets of locking claws (11) are respectively engaged with the corresponding locking wheels (10).

2. The centrifugal drum structure for centrifugal sand making according to claim 1, characterized in that: A toothed ring (7) is fitted onto the adjusting disc (4), and a drive wheel (8) is provided inside the mounting cylinder (1). The drive wheel (8) is meshed with the toothed ring (7), and the drive wheel (8) is rotatably connected to the mounting cylinder (1) through the mounting shaft (9).

3. The centrifugal rotary drum structure for centrifugal sand making according to claim 1, characterized in that: Both sets of locking claws (11) are rotatably connected to the mounting cylinder (1) via rotating rods (12). Both sets of rotating rods (12) are fitted with first torsion springs (15). The two ends of the first torsion springs (15) are fixedly connected to the mounting cylinder (1) and the locking claws (11) respectively. Both sets of rotating rods (12) are fitted with gears (13). Two sets of racks (14) that mesh with the gears (13) are slidably installed inside the mounting cylinder (1).

4. The centrifugal rotary drum structure for centrifugal sand making according to claim 1, characterized in that: A connecting frame (16) is slidably installed inside the mounting cylinder (1). The connecting frame (16) is fixedly connected to two sets of racks (14). A locking block (19) is fixedly installed on the connecting frame (16). A fixing rod (20) corresponding to the locking block (19) is fixedly installed inside the mounting cylinder (1). Two sets of sliding rods (17) corresponding to the connecting frame (16) are fixedly installed inside the mounting cylinder (1).

5. The centrifugal drum structure for centrifugal sand making according to claim 4, characterized in that: Two sets of symmetrically distributed fixing clips (21) are sleeved on the fixing rod (20). Both sets of fixing clips (21) are movably engaged with the locking block (19). Two sets of symmetrically distributed second torsion springs (22) are sleeved on the fixing rod (20). The two ends of the second torsion springs (22) are fixedly connected to the fixing clips (21) and the mounting cylinder (1) respectively.

6. The centrifugal drum structure for centrifugal sand making according to claim 4, characterized in that: The connecting frame (16) is slidably sleeved with the slide rod (17). Two sets of symmetrically distributed springs (18) are sleeved on the slide rod (17). The two ends of the two sets of springs (18) are fixedly connected to the connecting frame (16) and the mounting cylinder (1), respectively.

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