A flighted drum dryer

Abstract

This utility model discloses a scraper-type drum dryer, relating to the technical field of drum dryers. It includes a material receiving box with two sets of opposing rotating drums mounted on its upper end. It also includes: a scraper composed of multiple scraper blades, disposed on one side of the upper part of the drums; a mounting frame disposed on both sides of the upper part of the material receiving box; and multiple sets of rhomboid movable frames disposed within the inner cavity of the mounting frame and sequentially connected to the scraper blades. When the material on the drums comes into contact with the scraper blades, the scraper blades, according to the thickness of the material at different positions, push and extend the rhomboid movable frames to both sides. Pull straps inserted into the sides of the rhomboid movable frames pull the L-shaped rods on both sides of the mounting frame towards one end of the scraper. This effectively avoids the problem of damage to the scraper edge caused by excessive localized force when scraping material with conventional integrated scrapers. Each scraper blade independently adapts to the thickness of the material, dispersing the pressure during the scraping process, greatly reducing the stress on individual parts, and effectively protecting the scraper edge.

Description

Technical Field

[0001] This utility model relates to the field of drum dryer technology, specifically a scraper drum dryer. Background Technology

[0002] Scraper drum dryers are important drying equipment widely used in many fields such as chemical, food, and pharmaceutical industries. They dry materials through the rotation of the drum and the action of scrapers. The working principle involves feeding the material to be dried onto the drum surface. During rotation, the drum makes full contact with the material, using its own heat to evaporate the moisture. Simultaneously, the scrapers remove material from the drum surface, ensuring a highly efficient drying process.

[0003] Traditional scraper drum dryers mostly employ an integrated scraper structure. During actual operation, the material on the drum adheres to its surface after drying, and the thickness of this material varies at different locations. However, the integrated scraper cannot adaptively adjust to these varying thicknesses. When scraping away thicker areas of material, the entire scraper blade experiences excessive pressure, concentrated in certain localized areas, leading to excessive stress in these areas. Prolonged operation under these conditions easily damages the scraper blade, significantly shortening its lifespan. Therefore, we propose a scraper drum dryer. Utility Model Content

[0004] The purpose of this invention is to provide a scraper-type drum dryer to address the aforementioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a scraper-type drum dryer, including a material receiving box, wherein two sets of counter-rotating drums are installed at the upper end of the material receiving box, and further comprising:

[0006] A scraper consisting of multiple sets of scraper blades is located on one side of the upper part of the drum;

[0007] Mounting brackets are installed on both sides of the upper part of the material receiving box;

[0008] Multiple sets of diamond-shaped movable frames are set in the inner cavity of the mounting frame and connected to the scraper blades in sequence. When the material on the roller comes into contact with the scraper blades, the scraper blades squeeze upwards according to the thickness of the material at different positions and push the diamond-shaped movable frames to unfold to both sides. The pull straps inserted on the side of the diamond-shaped movable frames pull the L-shaped rods on both sides of the mounting frame to move towards one end of the scraper blades, and drive the elastic telescopic rods connected to the L-shaped rods to retract, so that the multiple sets of scraper blades fit closely with the material on the roller and scrape the material.

[0009] As a further description of the above technical solution: the middle section of the mounting frame is fixed with a groove rod that abuts and limits multiple sets of scraper blades, and the multiple sets of scraper blades slide up and down along the inner groove of the groove rod.

[0010] As a further description of the above technical solution: the rhomboid movable frame includes a segment one fixed to the top wall of the inner cavity of the mounting frame, a segment two fixed to the upper part of the scraper blade, and a segment three rotatably connected to the two sides of the segment one and the segment two via a shaft.

[0011] As a further description of the above technical solution: the three sides of the segment are integrally formed with perforated blocks, and the pull strap passes through the holes in the perforated blocks.

[0012] As a further description of the above technical solution: a column block is fixed to the side wall of the upper cavity rod of the mounting bracket, and the pull strap passes through the hole on the side of the column block and is sleeved with the L-shaped rod.

[0013] As a further description of the above technical solution: the elastic telescopic rod includes a rod sleeve fixed to the upper end of the mounting frame, an insert rod is slidably installed at one end of the rod sleeve, the insert rod is fixed to the L-shaped rod, and a spring sleeved on the insert rod is connected between the upper part of the L-shaped rod and the rod sleeve.

[0014] The scraper-type drum dryer provided by this utility model, as described above, has the following beneficial effects:

[0015] 1. This scraper-type drum dryer is designed with a scraper consisting of multiple sets of scraper blades. When materials of varying thickness at different locations on the drum come into contact with the scraper blades, the upward pressure generated by the thicker material pushes the scraper blades upward, causing the diamond-shaped movable frame to unfold to both sides. This allows the modular scraper to automatically adjust the position of each scraper blade according to the change in material thickness, avoiding the problem of damage to the scraper edge caused by excessive local force when scraping materials, which is common with conventional integrated scrapers. Each scraper blade independently adapts to the thickness of the material, dispersing the pressure during the scraping process, greatly reducing the stress on individual parts, effectively protecting the scraper edge, and extending the service life of the scraper.

[0016] 2. In this scraper-type drum dryer, when the material on the drum comes into contact with the scraper, the scraper blades move upward due to the difference in the thickness of the material, which in turn pushes the rhomboid movable frame to unfold. During this process, the perforated blocks on the side of the rhomboid movable frame move with the segment block three, pulling the pull belt that passes through the gap of the perforated blocks. The pull belt passes through the gap of the column block on the mounting frame and is sleeved with the L-shaped rod, driving the L-shaped rod to move. At the same time, the elastic telescopic rod connected to the L-shaped rod retracts. This linkage enables multiple sets of rhomboid movable frames to achieve precise and adaptive extension according to the thickness changes of the material at different positions. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 A three-dimensional structural schematic diagram provided for an embodiment of this utility model;

[0019] Figure 2 This is a schematic diagram of the assembly of the mounting bracket and scraper blade provided in an embodiment of the present utility model;

[0020] Figure 3 This is a cross-sectional schematic diagram of the mounting bracket provided in an embodiment of the present utility model;

[0021] Figure 4 A schematic diagram of the rhomboid movable frame structure provided in this embodiment of the utility model;

[0022] Figure 5 This is a schematic diagram of the elastic telescopic rod structure provided in an embodiment of the present utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Material receiving box; 2. Roller; 3. Scraper blade; 4. Mounting frame; 5. Diamond movable frame; 51. Section 1; 52. Section 2; 53. Section 3; 54. Shaft; 55. Hole block; 6. Pull belt; 7. L-shaped rod; 8. Elastic telescopic rod; 81. Rod sleeve; 82. Insert rod; 83. Spring; 9. Groove rod; 10. Column block. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] Please see Figures 1-5This utility model provides a scraper-type drum dryer technical solution: It includes a material receiving box 1, with two sets of opposing rotating drums 2 mounted on the upper end of the material receiving box 1; it also includes: a scraper composed of multiple sets of scraper blades 3, disposed on one side of the upper part of the drum 2; a mounting frame 4, disposed on both sides of the upper part of the material receiving box 1; and multiple sets of rhomboid movable frames 5, disposed in the inner cavity of the mounting frame 4 and sequentially connected to the scraper blades 3. When the material on the drum 2 comes into contact with the scraper blades, the scraper blades 3 squeeze upwards according to the thickness of the material at different positions, pushing the rhomboid movable frames 5 to unfold to both sides. The pull strap 6, which is inserted into the part, pulls the L-shaped rods 7 on both sides of the mounting frame 4 to move towards one end of the scraper, and drives the elastic telescopic rod 8 connected to the L-shaped rod 7 to retract, so that the multiple sets of scraper blades 3 come into contact with the material on the roller 2 and scrape the material. When the roller 2 rotates and the material on the roller 2 comes into contact with the scraper, the thickness of the material at different positions is different. The thicker material presses the scraper blades 3 upward, and the scraper blades 3 push the diamond-shaped movable frame 5 to unfold to both sides. The diamond-shaped movable frame 5 drives the pull strap 6, the pull strap 6 pulls the L-shaped rod 7, and the L-shaped rod 7 drives the elastic telescopic rod 8 to retract, so that the scraper blades 3 come into contact with the material and scrape the material.

[0027] In another embodiment of the present invention, preferably, a grooved rod 9 is fixed in the middle section of the mounting frame 4 to abut and limit the movement of multiple sets of scraper blades 3. The multiple sets of scraper blades 3 slide up and down along the inner groove of the grooved rod 9 in parallel. The grooved rod 9 restricts the position of the scraper blades 3, ensuring that their movement trajectory is stable and ensuring that the scraping work is carried out smoothly.

[0028] In another embodiment of the present invention, preferably, the rhomboid movable frame 5 includes a first block 51 fixed to the top wall of the inner cavity of the mounting frame 4, a second block 52 fixed to the upper part of the scraper 3, and a third block 53 rotatably connected to the first block 51 and the second block 52 on both sides by a shaft 54; this structure enables the rhomboid movable frame 5 to unfold stably to both sides.

[0029] In another embodiment of the present invention, preferably, the side of the third segment 53 is integrally formed with a hole block 55, and the pull strap 6 passes through the hole on the hole block 55; when the rhomboid movable frame 5 is unfolded, the third segment 53 moves and drives the hole block 55 to move, thereby pulling the pull strap 6.

[0030] In another embodiment of the present invention, preferably, a column block 10 is fixed to the side wall of the upper cavity rod of the mounting bracket 4, and a pull strap 6 passes through the hole on the side of the column block 10 and is sleeved with the L-shaped rod 7; when the pull strap 6 is pulled, it can drive the L-shaped rod 7 to move.

[0031] In another embodiment of the present invention, preferably, the elastic telescopic rod 8 includes a rod sleeve 81 fixed to the upper end of the mounting bracket 4. A plug rod 82 is slidably installed at one end of the rod sleeve 81. The plug rod 82 is fixed to the L-shaped rod 7. A spring 83, which is sleeved on the plug rod 82, is connected between the upper part of the L-shaped rod 7 and the rod sleeve 81. When the L-shaped rod 7 moves, it causes the plug rod 82 to slide inside the rod sleeve 81, compressing the spring 83. The elastic telescopic rod 8 then contracts and provides elastic tension.

[0032] During operation, the material to be dried is fed between the two sets of rollers 2 through the external material guiding structure. After being fully squeezed and dried, the material adheres to the outer surface of the rollers 2.

[0033] When the material attached to the roller 2 comes into contact with the scraper, due to the difference in the thickness of the material at different positions, the thicker material will exert an upward squeezing force on the scraper blade 3. Under the action of the material squeezing force, the scraper blade 3 moves upward, thereby pushing the diamond-shaped movable frame 5 connected to it to unfold to both sides. The first segment 51 of the diamond-shaped movable frame 5 is fixed to the top wall of the inner cavity of the mounting frame 4, and the second segment 52 is fixed to the upper part of the scraper blade 3. The first segment 51 and the second segment 52 are rotatably connected to the third segment 53 on both sides through the shaft 54. This structure enables the diamond-shaped movable frame 5 to unfold to both sides stably.

[0034] When the rhomboid movable frame 5 is unfolded, the integrally formed hole block 55 on its side moves with the movement of the section block 3 53. The pull strap 6 passing through the hole of the hole block 55 is pulled. The pull strap 6 passes through the side hole of the column block 10 fixed on the side wall of the upper cavity rod body of the mounting frame 4 and is sleeved with the L-shaped rod 7, thereby pulling the L-shaped rod 7 to move towards the scraper end.

[0035] During the process of the L-shaped rod 7 being pulled and moved by the pull belt 6, the insert rod 82, which is fixed to the L-shaped rod 7, slides inside the rod sleeve 81. Since the upper part of the L-shaped rod 7 is connected to the rod sleeve 81 by a spring 83 that is sleeved on the insert rod 82, the spring 83 is compressed, and the elastic telescopic rod 8 retracts. The retraction of the elastic telescopic rod 8 provides elastic tension for the L-shaped rod 7 and the pull belt 6, thereby enabling the multiple sets of scraper blades 3 to adjust accordingly according to the thickness changes of the attached material at different positions on the roller 2, always adhering to the attached material, and achieving effective scraping of the attached material on the roller 2.

[0036] Throughout the entire operation, the grooved rod 9 fixed in the middle of the mounting frame 4 acts as a resisting and limiting element for the multiple sets of scraper blades 3. The multiple sets of scraper blades 3 can only slide up and down side by side along the inner groove of the grooved rod 9, ensuring the stability of the movement trajectory of the scraper blades 3 and ensuring the smooth progress of the scraping operation.

[0037] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A scraper-type drum dryer, comprising a material receiving box (1), wherein two sets of opposing rotating drums (2) are mounted on the upper end of the material receiving box (1), characterized in that, Also includes: A scraper consisting of multiple scraper blades (3) is disposed on one side of the upper part of the roller (2); Mounting bracket (4) is installed on both sides of the upper part of the material receiving box (1); Multiple sets of rhomboid movable frames (5) are set in the inner cavity of the mounting frame (4) and connected to the scraper blades (3) in sequence. When the material on the roller (2) comes into contact with the scraper blade, the scraper blade (3) pushes the rhomboid movable frame (5) to unfold to both sides according to the thickness of the material at different positions. The pull straps (6) inserted on the side of the rhomboid movable frame (5) pull the L-shaped rods (7) on both sides of the mounting frame (4) to move towards one end of the scraper blade, and drive the elastic telescopic rods (8) connected to the L-shaped rods (7) to retract, so that the multiple sets of scraper blades (3) and the material on the roller (2) are in contact and scraped.

2. The scraper-type drum dryer according to claim 1, characterized in that, The mounting bracket (4) has a groove rod (9) fixed in the middle section to limit the contact of multiple sets of scraper blades (3). The multiple sets of scraper blades (3) slide up and down along the inner groove of the groove rod (9) side by side.

3. A scraper-type drum dryer according to claim 1, characterized in that, The rhomboid movable frame (5) includes a first segment (51) fixed to the top wall of the inner cavity of the mounting frame (4), a second segment (52) fixed to the upper part of the scraper (3), and a third segment (53) rotatably connected to the first segment (51) and the second segment (52) on both sides by a shaft (54).

4. A scraper-type drum dryer according to claim 3, characterized in that, The three segments (53) have a perforated block (55) integrally formed on the side, and the pull strap (6) passes through the hole in the perforated block (55).

5. A scraper-type drum dryer according to claim 1, characterized in that, The mounting bracket (4) has a column block (10) fixed to the side wall of the upper cavity rod body. The pull strap (6) passes through the hole on the side of the column block (10) and is sleeved with the L-shaped rod (7).

6. A scraper drum dryer according to claim 1, characterized in that, The elastic telescopic rod (8) includes a rod sleeve (81) fixed to the upper end of the mounting bracket (4). A plug rod (82) is slidably installed at one end of the rod sleeve (81). The plug rod (82) is fixed to the L-shaped rod (7). A spring (83) sleeved on the plug rod (82) is connected between the upper part of the L-shaped rod (7) and the rod sleeve (81).

Images