Device for preventing deformation of rake rod of disc dryer

Abstract

The utility model relates to a device for preventing the deformation of a harrow rod of a disc dryer, which comprises a rotating shaft of the disc dryer, the harrow rod connected with the rotating shaft, and harrow blades rotatably arranged on the harrow rod, a plurality of harrow blades are distributed on the harrow rod along the length direction, a reinforcing rod is fixedly arranged above the harrow rod, and the reinforcing rod extends along the length direction of the harrow rod. The rotating shaft is hinged to an upper pull screw located above the reinforcing rod, the reinforcing rod is hinged to a lower pull screw, the lower pull screw is connected with the upper pull screw through a screwed joint, and the screwing directions of threads at the two ends of the screwed joint are opposite. The reinforcing rod is fixedly arranged above the rake rod, so that the structural strength of the rake rod is improved, the rake rod is prevented from being bent and deformed, the pull-down screw rod and the pull-up screw rod are connected through the threaded connector, upward lifting force is provided for the reinforcing rod, the end part of the rake rod is further supported through the roller assembly, and the rake rod is prevented from being bent and deformed. Therefore, the rake rod is prevented from drooping due to stress and rubbing with the drying disc to affect product quality.

Description

Technical Field

[0001] The utility model relates to the technical field of disk dryers, in particular to a device for preventing a rake rod of a disk dryer from being deformed. Background Art

[0002] Disc dryer, also known as disc dryer, is a drying equipment that mainly uses heat conduction. It includes a vertically arranged rotating shaft and a drying disc arranged coaxially with the rotating shaft. A rake is connected to the rotating shaft, and a plurality of rakes are provided on the rake. The rake rotates with the rotating shaft, so that the rakes move the materials on the drying disc, so that the materials are evenly heated and dried.

[0003] In the prior art, the rake rod of the disk dryer is fixed to the rotating shaft at one end and is suspended at the other end. With long-term use, especially when the production task is large and the material is piled up, the rake blades are subjected to a large force in the process of pushing the material. In addition, the gravity of the rake rod and the rake blades themselves causes the rake rod to bend and deform easily, causing the suspended end of the rake rod to droop and contact with the drying disk to generate friction. The magnetic substances generated by the friction are brought into the product, which will cause a serious decline in product quality.

[0004] Moreover, the rake rod and the rotating shaft are currently fixed with a threaded connection. When the rake rod is deformed, the threads at the connection between the rake rod and the rotating shaft will be misaligned and strangled. When the rake rod needs to be disassembled for maintenance, the rake rod cannot be unscrewed, and the rake rod and the rotating shaft are difficult to separate, which is inconvenient for subsequent maintenance. Utility Model Content

[0005] The utility model aims to solve the deficiencies of the prior art and provides a device for preventing rake rod deformation, thereby improving the strength of the rake rod and avoiding friction between the deformed rake rod and the drying plate. At the same time, the rake rod and the rotating shaft are easy to disassemble, which is convenient for subsequent maintenance work.

[0006] The utility model is realized through the following technical scheme: a device for preventing the deformation of the rake rod of a disk dryer, comprising a rotating shaft of the disk dryer, a rake rod connected to the rotating shaft, and rake leaves rotatably mounted on the rake rod, a plurality of rake leaves distributed along the length direction of the rake rod, a reinforcement rod fixed above the rake rod, the reinforcement rod extending along the length direction of the rake rod, an upper pull-up screw located above the reinforcement rod hinged on the rotating shaft, a lower pull-down screw hinged on the reinforcement rod, the lower pull-down screw and the upper pull-up screw being connected by a threaded joint, the threads at both ends of the threaded joint having opposite rotation directions.

[0007] This solution enhances the rake bar's structural strength by fixing a reinforcement rod above it, preventing it from bending or deforming. A threaded joint connects the pull-down and pull-up screws, providing an upward pulling force on the reinforcement rod, preventing the rake bar from sagging under load and rubbing against the drying plate, which could affect product quality. Furthermore, the threads on both ends of the threaded joint rotate in opposite directions, allowing the pull-up and pull-down screws to move closer or further apart by rotating the threaded joint. This allows for flexible adjustment of the pulling force on the reinforcement rod, facilitating control of the distance between the rake bar, rake leaves, and drying plate, making it easy to use.

[0008] As an optimization, the hinge point between the pull-down screw and the reinforcing rod is located in the middle of the reinforcing rod. In this optimization solution, the middle of the reinforcing rod is subjected to the pulling force, so that the pulling force on the entire reinforcing rod is evenly distributed, thereby evenly stressing the rake rod.

[0009] As an optimization, the reinforcement rod and the rake rod are fixedly connected by multiple connecting rods, and the multiple connecting rods are distributed along the length of the reinforcement rod. In this optimization solution, multiple connecting rods are distributed along the length, so that the reinforcement rod and the rake rod are sequentially connected and reinforced along the length, thereby enhancing the structural strength of the rake rod along the length and preventing bending deformation of the rake rod along the length.

[0010] As an optimization, the multiple connecting rods are spaced apart from the multiple rakes. This optimization solution allows the adjacent rakes to be equally affected by the upward pulling force, effectively dispersing the downward pressure on the rakes from the rakes pushing the material and the weight of the rakes, thus preventing deformation of the middle of the rakes that would cause friction between the rakes and the drying plate.

[0011] As an optimization, a roller assembly is provided at the end of the rake bar away from the rotating shaft. The roller assembly is placed on the drying plate of the disk dryer and supports the rake bar. This optimization solution further supports the end of the rake bar through the roller assembly, further preventing the rake bar end from sagging and rubbing against the drying plate, and improving the stability of the rake bar's rotation.

[0012] As an optimization, the roller assembly includes a roller with a vertical adjustment screw fixedly connected to its upper end. A fixing nut is threaded onto the adjustment screw, and the fixing nut is fixedly connected to the rake bar. In this optimized solution, the roller can be adjusted in height by screwing the adjustment screw and the fixing nut together. As the upper and lower pull screws move closer and further away, and the distance between the rake bars changes, the roller maintains contact with the drying plate and supports the rake bars, improving ease of use.

[0013] As an optimization, the end of the rake bar is hinged to the rotating shaft via a first transverse articulation axis. This optimized solution allows the rake bar to be hinged to the rotating shaft, allowing it to rotate up and down. This allows for adjustment of the distance between the rake bar, the rake blade, and the drying plate, by coordinating with the pull-up and pull-down screws. This facilitates continued use by adjusting the distance between the rake blade and the drying plate, even in the event of wear or large material clumps. Furthermore, the hinged connection prevents the rake bar from becoming misaligned or entangled with the rotating shaft, as is the case with fixed connections, facilitating disassembly and subsequent maintenance of the rake bar.

[0014] As an optimization, the first hinge shaft is a pin. In this optimization solution, the pin is more convenient to disassemble.

[0015] The beneficial effects of the utility model are as follows: the upper part of the rake rod is reinforced by the reinforcing rod, the structural strength is higher, the rake rod and the reinforcing rod are fixedly connected by multiple connecting rods, so that all parts of the rake rod in the length direction are reinforced, thereby preventing the rake rod from bending and deforming in the length direction.

[0016] The end of the rake bar is hinged to the rotating shaft through the first horizontal hinge shaft, which is convenient for disassembly and subsequent maintenance of the rake bar. At the same time, the rake bar can be rotated up and down to adjust the distance between the rake leaf and the drying plate, which is easy to use.

[0017] The middle part of the reinforcing rod provides an upward pulling force through the upper and lower pull screws, so that the rake rod is subjected to a uniform pulling force as a whole to prevent the rake rod from sagging. The roller assembly further supports the end of the rake rod, thereby further preventing the sagging of the rake rod end from rubbing against the drying plate and affecting the product quality.

[0018] The upper pull screw and the lower pull screw are connected by a threaded joint. By rotating the threaded joint, the upper pull screw and the lower pull screw can be moved closer to or away from each other, thereby freely adjusting the pulling force on the reinforcing rod, thereby facilitating the control of adjusting the distance between the rake leaf and the drying plate, and making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the utility model;

[0020] Figure 2 for Figure 1 A sectional view of part A;

[0021] As shown in the figure:

[0022] 1. Rotating shaft, 2. Rake rod, 3. Rake blade, 4. Drying plate, 5. Roller assembly, 51. Roller, 52. Adjusting screw, 53. Fixing nut, 6. Reinforcement rod, 7. Connecting rod, 8. Pull-down screw, 9. Threaded joint, 10. Pull-up screw, 11. First hinge axis. DETAILED DESCRIPTION

[0023] In order to clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0024] like Figures 1-2 As shown, a device for preventing deformation of the rake bar of a drying machine comprises a rotating shaft 1 of the drying machine, a rake bar 2 connected to the rotating shaft 1, and rake blades 3 rotatably mounted on the rake bar 2, with multiple rake blades 3 distributed along the length of the rake bar 2. Specifically, at least two rake bars 2 are evenly distributed around the rotating shaft 1, and a drying plate 4 is disposed below the rake bars 2. The drying plate 4 is sleeved on the rotating shaft and arranged coaxially with the rotating shaft 1, and the rotating shaft rotates relative to the drying plate.

[0025] The end of the rake bar 2 is hinged to the rotating shaft 1 via a transverse first hinge axis 11, allowing the rake bar 2 to rotate up and down around the first hinge axis 11. In this embodiment, the first hinge axis 11 is a pin, and a mounting base is fixedly connected to the outer wall of the rotating shaft 1. Pin holes for the pin to pass through are formed on the mounting base and the rake bar 2. The pin passes through the pin hole to connect the rake bar to the mounting base.

[0026] A roller assembly 5 is provided at the end of the rake bar 2, away from the rotating shaft 1. This roller assembly 5 is placed on the drying plate 4 of the dryer and supports the rake bar 2. The roller assembly 5 includes a roller 51, the lower end of which contacts the drying plate 4. A vertical adjustment screw 52 is fixedly connected to the upper end of the roller 51. A fixing nut 53 is threaded onto the adjustment screw 52, which is fixedly connected to the rake bar 2. In this embodiment, a retaining nut is also threaded onto the adjustment screw, located below the fixing nut to secure the adjustment screw in place.

[0027] A reinforcement rod 6 is fixed above the rake bar 2, and the reinforcement rod 6 extends along the length direction of the rake bar 2. In this embodiment, the reinforcement rod 6 is fixed to the rake bar 2 through a plurality of connecting rods 7. The connecting rods 7 are arranged vertically, and the upper and lower ends of the connecting rods 7 are fixed to the reinforcement rod 6 and the rake bar 2 respectively. The plurality of connecting rods 7 are distributed along the length direction of the reinforcement rod 6, and the plurality of connecting rods 7 are distributed at intervals with the plurality of rake leaves 3, such as Figure 1 As shown, in this embodiment, three rake leaves 3 are rotatably mounted on the rake rod 2, four connecting rods 7 are provided between the rake rod and the reinforcing rod, and the four connecting rods are spaced apart from the three rake leaves.

[0028] The rotating shaft 1 is hingedly connected to an upper pull-up screw 10 located above the reinforcing rod 6. The reinforcing rod 6 is hingedly connected to a lower pull-up screw 8. In this embodiment, the hinge point between the lower end of the lower pull-up screw 8 and the reinforcing rod 6 is located in the middle of the reinforcing rod 6. The lower pull-up screw 8 and the upper pull-up screw 10 are connected by a threaded joint 9, and the threads at both ends of the threaded joint 9 have opposite rotation directions. Specifically, the threaded joint 9 has internal threaded holes at both ends, and the threads of the two internal threaded holes have opposite rotation directions. The upper end of the lower pull-up screw 8 and the lower end of the upper pull-up screw 10 are respectively threadedly connected to the two internal threaded holes.

[0029] Working principle: The rotation of the rotating shaft 1 drives the rake rod 2 to rotate, so that the rake blades 3 on the rake rod 2 move the materials on the drying plate 4. The roller assembly 5 at the end of the rake rod 2 can support the rake rod 2. The roller 51 can adjust the support height of the rake rod 2 by screwing it to the fixing nut 53 through the adjusting screw 52. The pull-up screw 10 and the pull-down screw 8 connected by the threaded joint 9 provide an upward pulling force to the reinforcing rod 6, thereby providing an upward pulling force to the rake rod 2, further supporting the rake rod 2 and preventing the rake rod 2 and rake blades 3 from sagging and causing friction with the drying plate 4. The threads at both ends of the threaded joint 9 have opposite rotation directions. By rotating the threaded joint 9, the pull-up screw 10 and the pull-down screw 8 can be synchronously moved closer to or away from each other, thereby driving the rake rod 2 to rotate around the first hinge axis 11 to adjust the distance between the rake blades 3 and the drying plate 4.

[0030] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved through or by adopting existing technologies, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A device for preventing deformation of a harrow bar of a disk dryer, comprising a rotating shaft (1) of the disk dryer, a harrow bar (2) connected to the rotating shaft, and a harrow blade (3) rotatably mounted on the harrow bar, wherein a plurality of harrow blades (3) are distributed along the length direction of the harrow bar (2), and characterized in that: A reinforcing rod (6) is fixed above the rake rod (2), and the reinforcing rod extends along the length direction of the rake rod. An upper pull screw (10) located above the reinforcing rod (6) is hinged on the rotating shaft (1), and a lower pull screw (8) is hinged on the reinforcing rod (6). The lower pull screw (8) is connected to the upper pull screw (10) through a threaded joint (9), and the threads at both ends of the threaded joint have opposite rotation directions.

2. The device for preventing deformation of the rake bar of a disk dryer according to claim 1, characterized in that: The hinge point between the pull-down screw rod (8) and the reinforcing rod (6) is located in the middle of the reinforcing rod (6).

3. The device for preventing deformation of the rake bar of a disk dryer according to claim 1, characterized in that: The reinforcing rod (6) and the rake rod (2) are fixedly connected via a plurality of connecting rods (7), and the plurality of connecting rods are distributed along the length direction of the reinforcing rod (6).

4. The device for preventing deformation of the rake bar of a disk dryer according to claim 3, characterized in that: The plurality of connecting rods (7) and the plurality of rake blades (3) are distributed at intervals.

5. The device for preventing deformation of the rake bar of a disk dryer according to claim 1, characterized in that: A roller assembly (5) is provided at one end of the rake rod (2) away from the rotating shaft (1); the roller assembly is placed on the drying disc (4) of the disc dryer and supports the rake rod (2).

6. The device for preventing deformation of the harrow bar of a disk dryer according to claim 5, characterized in that: The roller assembly (5) comprises a roller (51), the upper end of which is fixedly connected to a vertical adjustment screw (52), the adjustment screw being threaded with a fixing nut (53), and the fixing nut being fixedly connected to the rake rod (2).

7. The device for preventing deformation of a disk dryer rake rod according to claim 1, characterized in that: The end of the rake rod (2) is hinged to the rotating shaft (1) via a transverse first hinge shaft (11).

8. The device for preventing deformation of the harrow bar of a disk dryer according to claim 7, characterized in that: The first hinge shaft (11) is a pin.

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