A self-adjusting mechanism for the angle of a doctor blade of a thin-layer drying machine

Abstract

This utility model relates to the field of scraper technology for thin-layer drying machines, specifically to a cylinder; a scraper rotor assembly rotatably disposed within the cylinder; and a drive system, which is connected to the scraper rotor assembly for driving its rotation. The scraper rotor assembly includes: a rotor; and at least one set of material-coating scraper mechanisms disposed on the outer wall of the rotor for coating materials into a thin layer on the inner wall of the cylinder. The combination of a precision screw adjustment mechanism and a spring clamping assembly achieves convenient linear compensation and reliable overload protection after scraper wear. Simultaneously, the adjustable limit mechanism and torsion spring provide precise setting of the working angle and adaptive obstacle avoidance function for the unloading scraper. Both are purely mechanically adjustable, ensuring intuitive and reliable operation. Combined with the design of multiple scraper sets distributed circumferentially and axially, the equipment can maintain uniform and efficient thin-layer coating and scraping performance during long-term operation.

Description

Technical Field

[0001] This utility model relates to the field of scraper technology for thin-layer drying machines, specifically to a self-adjusting mechanism for the angle of a scraper in a thin-layer drying machine. Background Technology

[0002] Thin-layer dryers, as highly efficient solid-liquid separation and drying equipment, are commonly used in industrial production to process various sludge and slurry materials. By uniformly spreading the material into a thin layer, moisture is rapidly evaporated with the help of a heat source, significantly improving drying efficiency while effectively retaining the useful components of the material and reducing energy consumption. This is of great significance for promoting sustainable development in environmental protection, resource recycling, and other fields. During the operation of the thin-layer dryer, the scraper plays an indispensable auxiliary role. It precisely controls the spreading thickness of the material within the equipment, ensuring the uniformity of the thin layer, preventing localized material accumulation that could affect the drying effect, and promptly cleaning residual material from the inner wall of the equipment, ensuring continuous and stable operation.

[0003] The scraper blades of thin-layer drying machines make them more practical for processing complex materials, further expanding their application scenarios in multiple industries such as chemical, environmental protection, and food processing. However, they still have certain problems: 1) After traditional scrapers wear down, the gap between them and the cylinder wall increases, requiring disassembly of the equipment for manual shim compensation or replacement, which is cumbersome and time-consuming; 2) Traditional rigidly installed scrapers lack a buffer mechanism when encountering foreign objects, which can easily lead to scraper chipping, transmission system overload, or even equipment shutdown; 3) The installation position or working angle of traditional scrapers is usually fixed and cannot be adjusted, or coarse adjustment methods such as shims are used, which are difficult to meet the requirements of precision processes for coating or scraping thickness. Therefore, in view of the above situation, there is an urgent need to develop a self-adjusting mechanism for the scraper angle of thin-layer drying machines to overcome the shortcomings in current practical applications and meet current needs. Utility Model Content

[0004] The purpose of this invention is to provide a self-adjusting mechanism for the scraper angle of a thin-layer drying machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a self-adjusting mechanism for the scraper angle of a thin-layer drying machine, comprising:

[0006] cylindrical body;

[0007] The scraper rotor assembly is rotatably housed within the cylinder;

[0008] The drive system, which is connected to the scraper rotor assembly, is used to drive its rotation;

[0009] The scraper rotor assembly includes:

[0010] Rotor;

[0011] At least one set of fabric scraper mechanism is provided on the outer wall of the rotor to coat the material into a thin layer on the inner wall of the cylinder;

[0012] At least one set of unloading scraper mechanism is located on the outer wall of the rotor to scrape the dried material off the inner wall of the cylinder;

[0013] The fabric scraper mechanism includes:

[0014] The first mounting base is fixed to the rotor;

[0015] First scraper;

[0016] The first elastic clamping component is disposed between the first mounting base and the first scraper, and is used to provide the first scraper with an elastic force that presses it against the inner wall of the cylinder.

[0017] The first gap adjustment component is used to adjust the gap between the first scraper and the inner wall of the cylinder in the initial state of elastic compression;

[0018] The unloading scraper mechanism includes:

[0019] The second mounting base is fixed to the rotor;

[0020] Shaft;

[0021] The second scraper is fixed on the rotating shaft and rotatably mounted on the second mounting base via the rotating shaft;

[0022] The second elastic clamping assembly, connected to the rotating shaft, is used to provide the second scraper with torque to press it against the inner wall of the cylinder;

[0023] The second spacing adjustment component is used to adjust the spacing between the second scraper and the inner wall of the cylinder in the initial elastic compression state.

[0024] Specifically, through the coordinated operation of the first spacing adjustment component and the first elastic clamping component of the fabric scraper mechanism, and the second spacing adjustment component and the second elastic clamping component of the unloading scraper mechanism, convenient and precise adjustment of the distance between the first and second scrapers and the inner wall of the cylinder is achieved, effectively compensating for tool wear. At the same time, its elastic clamping characteristics enable the tool to automatically retract and avoid obstacles and reset afterward. Thus, while ensuring continuous and efficient thin-layer coating and scraping operations, the risk of jamming or tool damage is greatly avoided, significantly improving equipment reliability, operating efficiency and service life.

[0025] Preferably, the first spacing adjustment assembly includes an adjustment screw, and the first mounting base is provided with a threaded seat that is threadedly engaged with the adjustment screw. Rotating the adjustment screw can drive the first scraper and the first elastic clamping assembly to move relative to the first mounting base.

[0026] Preferably, the first elastic clamping assembly includes a movable seat and a first spring. The movable seat is slidably sleeved on the first mounting base, the first scraper is detachably mounted on the movable seat, and the first spring is located between the threaded seat and the movable seat and sleeved on the adjusting screw.

[0027] Specifically, by setting a first gap adjustment component consisting of an adjusting screw and a threaded seat, and combining it with a first elastic clamping component consisting of a movable seat and a first spring, the operator can precisely and linearly adjust the initial clamping position of the first scraper by simply rotating the adjusting screw, thereby accurately compensating for its wear. The first spring continuously provides a stable elastic clamping force, ensuring that the scraper can effectively adhere to the inner wall of the cylinder during operation, and can also buffer and avoid sudden obstacles through the sliding of the movable seat and the compression of the spring, effectively preventing damage to the mechanism. At the same time, the first scraper can be detachably installed on the movable seat, which greatly facilitates its individual replacement and maintenance.

[0028] Preferably, the second spacing adjustment assembly includes a positioning block radially fixed to the end of the rotating shaft and a positioning disk rotatably disposed on the second mounting base. The positioning disk is provided with a limiting part that cooperates with the positioning block to limit the maximum rotation angle of the second scraper.

[0029] Preferably, the limiting part is a positioning pin fixed inside the positioning plate, and the positioning block can abut against the positioning pin during the rotation stroke.

[0030] Preferably, it also includes a locking element for locking the rotational position of the positioning disc.

[0031] Specifically, the locking component is a locking screw. By setting a second spacing adjustment assembly consisting of a positioning block, a rotatable positioning disk, and a positioning pin as a limiting part, and cooperating with the locking component, it is possible to precisely and reliably set the limit position of the downward swing of the second scraper (i.e., its working angle) by simply loosening the locking component and rotating the positioning disk to change its circumferential position through the contact position between the positioning pin and the positioning block on the rotating shaft. This conveniently compensates for tool wear and ensures the scraping effect. This purely mechanical adjustment mechanism has a simple structure, is intuitive to adjust, and is very stable after locking. At the same time, it does not change the original overload protection function of the second elastic clamping assembly, ensuring the reliability and durability of the unloading scraper mechanism.

[0032] Preferably, the second elastic clamping component is a torsion spring, which is sleeved on the rotating shaft, with one end abutting against the second mounting base and the other end abutting against the rotating shaft.

[0033] Specifically, by using a torsion spring sleeved on the rotating shaft as the second elastic clamping component, with its two ends abutting against the second mounting base and the rotating shaft respectively, a continuous, stable, and constant-direction torque can be provided to the second scraper, ensuring that it always has a strong adhesion force pressing against the inner wall of the cylinder, thereby ensuring thorough scraping. At the same time, the torsion spring has a compact structure and occupies little space, and can be perfectly embedded inside the scraper swing mechanism. Its torsional characteristics allow the second scraper to sensitively lift and store energy when encountering greater resistance, and can immediately and automatically reset after the obstacle is cleared. This effectively realizes the dual functions of overload protection and automatic recovery, greatly improving the reliability and adaptability of the unloading scraper mechanism.

[0034] Preferably, both the fabric scraper mechanism and the unloading scraper mechanism are provided in multiple sets and are distributed along the circumference and / or axial direction of the rotor.

[0035] Specifically, by distributing multiple sets of material spreading and unloading scraper mechanisms along the circumference and / or axial direction of the rotor, the interaction area and working frequency between the scraper assembly and the inner wall of the cylinder can be significantly increased. This makes the coating and scraping operations of the material more continuous, uniform, and efficient in both the circumferential and axial directions, effectively avoiding the processing blind spots or capacity bottlenecks that may occur with a single set of scrapers. As a result, the processing capacity, drying uniformity, and production efficiency of the entire thin-layer dryer are greatly improved. At the same time, the setting of multiple sets of scrapers also makes the load distribution more balanced, which is conducive to extending the overall service life of the rotor and drive system.

[0036] Preferably, the drive system includes a motor and a reducer located outside the cylinder.

[0037] Preferably, the first scraper and / or the second scraper are installed in a detachable manner.

[0038] Compared with the prior art, this utility model provides a self-adjusting mechanism for the scraper angle of a thin-layer drying machine, which has the following beneficial effects:

[0039] The combination of a precision screw adjustment mechanism and a spring clamping assembly enables convenient linear compensation and reliable overload protection after the fabric scraper wears. At the same time, the adjustable limit mechanism and torsion spring provide precise setting of the working angle and adaptive obstacle avoidance function for the unloading scraper. Both are purely mechanically adjusted to ensure intuitive operation and reliability. Combined with the design of multiple scraper sets distributed circumferentially and axially, the equipment can maintain uniform and efficient thin-layer coating and scraping performance during long-term operation, significantly improving drying efficiency, processing stability and tool life. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0042] Figure 2 This is a schematic diagram of the scraper rotor assembly of this utility model;

[0043] Figure 3 This is a schematic diagram of the fabric scraper mechanism of this utility model;

[0044] Figure 4 This is an exploded view of the fabric scraper mechanism of this utility model;

[0045] Figure 5 This is a schematic diagram of the unloading scraper mechanism of this utility model;

[0046] Figure 6 This is an exploded view of the unloading scraper mechanism of this utility model;

[0047] Figure 7 This is a schematic diagram of the positioning block structure of this utility model.

[0048] In the diagram: 10, cylinder; 20, scraper rotor assembly; 210, rotor; 220, fabric scraper mechanism; 221, first mounting base; 222, first scraper; 223, first elastic clamping assembly; 2231, movable seat; 2232, first spring; 224, first spacing adjustment assembly; 2241, adjusting screw; 2242, threaded seat; 230, unloading scraper mechanism; 231, second mounting base; 232, second scraper; 233, rotating shaft; 234, second elastic clamping assembly; 235, second spacing adjustment assembly; 2351, positioning block; 2352, positioning disc; 2353, limiting part; 2354, locking element; 30, drive system. Detailed Implementation

[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] Example:

[0052] Please see Figures 1-7 This utility model provides a technical solution: a self-adjusting mechanism for the scraper angle of a thin-layer drying machine, comprising:

[0053] Cylinder 10;

[0054] The scraper rotor assembly 20 is rotatably disposed inside the cylinder 10;

[0055] The drive system 30 is connected to the scraper rotor assembly 20 for driving its rotation;

[0056] The scraper rotor assembly 20 includes:

[0057] Rotor 210;

[0058] At least one set of fabric scraper mechanism 220 is provided on the outer wall of rotor 210 for coating material into a thin layer on the inner wall of cylinder 10.

[0059] At least one set of unloading scraper mechanism 230 is provided on the outer wall of rotor 210 for scraping the dried material off the inner wall of cylinder 10;

[0060] The fabric scraper mechanism 220 includes:

[0061] The first mounting base 221 is fixed on the rotor 210;

[0062] First scraper 222;

[0063] The first elastic pressing component 223 is disposed between the first mounting base 221 and the first scraper 222, and is used to provide the first scraper 222 with an elastic force that presses it against the inner wall of the cylinder 10;

[0064] The first spacing adjustment component 224 is used to adjust the spacing between the first scraper 222 and the inner wall of the cylinder 10 in the initial state of elastic compression.

[0065] The unloading scraper mechanism 230 includes:

[0066] The second mounting base 231 is fixed on the rotor 210;

[0067] Shaft 233;

[0068] The second scraper 232 is fixed on the rotating shaft 233 and is rotatably mounted on the second mounting base 231 via the rotating shaft 233;

[0069] The second elastic clamping assembly 234 is connected to the rotating shaft 233 and is used to provide the second scraper 232 with torque to press it against the inner wall of the cylinder 10;

[0070] The second spacing adjustment component 235 is used to adjust the spacing between the second scraper 232 and the inner wall of the cylinder 10 in the initial state of elastic compression.

[0071] Specifically, through the coordinated operation of the first spacing adjustment component 224 and the first elastic clamping component 223 of the fabric scraper mechanism 220, and the second spacing adjustment component 235 and the second elastic clamping component 234 of the unloading scraper mechanism 230, convenient and precise adjustment of the distance between the first scraper 222 and the second scraper 232 and the inner wall of the cylinder 10 is achieved, effectively compensating for tool wear. At the same time, its elastic clamping characteristics enable the tool to automatically retract and avoid obstacles and reset afterward. Thus, while ensuring continuous and efficient thin-layer coating and scraping operations, the risk of jamming or tool damage is greatly avoided, significantly improving equipment reliability, operating efficiency and service life.

[0072] Preferably, the first spacing adjustment component 224 includes an adjustment screw 2241, and the first mounting base 221 is provided with a threaded seat 2242 that is threadedly engaged with the adjustment screw 2241. Rotating the adjustment screw 2241 can drive the first scraper 222 and the first elastic clamping component 223 to move relative to the first mounting base 221.

[0073] Preferably, the first elastic clamping assembly 223 includes a movable seat 2231 and a first spring 2232. The movable seat 2231 is slidably sleeved on the first mounting base 221, the first scraper 222 is detachably mounted on the movable seat 2231, and the first spring 2232 is disposed between the threaded seat 2242 and the movable seat 2231 and sleeved on the adjusting screw 2241.

[0074] Specifically, by setting a first spacing adjustment component 224 consisting of an adjusting screw 2241 and a threaded seat 2242, and combining it with a first elastic clamping component 223 consisting of a movable seat 2231 and a first spring 2232, the operator can precisely and linearly adjust the initial clamping position of the first scraper 222 by simply rotating the adjusting screw 2241, thereby accurately compensating for its wear. The first spring 2232 continuously provides a stable elastic clamping force, ensuring that the scraper can effectively adhere to the inner wall of the cylinder 10 during operation, and can also buffer and avoid sudden obstacles through the sliding of the movable seat 2231 and the compression of the spring, effectively preventing damage to the mechanism. At the same time, the first scraper 222 can be detachably installed on the movable seat 2231, which greatly facilitates its individual replacement and maintenance.

[0075] Preferably, the second spacing adjustment assembly 235 includes a positioning block 2351 radially fixed to the end of the rotating shaft 233 and a positioning disk 2352 rotatably disposed on the second mounting base 231. The positioning disk 2352 is provided with a limiting part 2353 that cooperates with the positioning block 2351 to limit the maximum rotation angle of the second scraper 232.

[0076] Preferably, the limiting part 2353 is a positioning pin fixed inside the positioning disk 2352, and the positioning block 2351 can abut against the positioning pin during the rotation stroke.

[0077] Preferably, it also includes a locking element 2354 for locking the rotational position of the positioning disk 2352.

[0078] Specifically, by setting a second spacing adjustment component 235 consisting of a positioning block 2351, a rotatable positioning disk 2352, and a positioning pin forming a limiting part 2353, and cooperating with a locking member 2354, the second scraper 232's downward swing limit position (i.e., its working angle) can be accurately and reliably set by simply loosening the locking member 2354 and rotating the positioning disk 2352 to change its circumferential position, through the contact position between the positioning pin and the positioning block 2351 on the rotating shaft 233. This conveniently compensates for tool wear and ensures the scraping effect. This purely mechanical adjustment mechanism has a simple structure, intuitive adjustment, and is very stable after locking. At the same time, it does not change the original overload protection function of the second elastic clamping component 234, ensuring the reliability and durability of the unloading scraper mechanism 230.

[0079] Preferably, the second elastic clamping component 234 is a torsion spring, which is sleeved on the rotating shaft 233, with one end abutting against the second mounting base 231 and the other end abutting against the rotating shaft 233.

[0080] Specifically, by using a torsion spring sleeved on the rotating shaft 233 as the second elastic clamping component 234, with its two ends abutting against the second mounting base 231 and the rotating shaft 233 respectively, a continuous, stable and constant torque can be provided to the second scraper 232, ensuring that it always has a strong adhesion force pressing against the inner wall of the cylinder 10, thereby ensuring thorough scraping; at the same time, the torsion spring has a compact structure and occupies little space, and can be perfectly embedded inside the scraper swing mechanism. Its torsional characteristics allow the second scraper 232 to sensitively lift and store energy when encountering greater resistance, and can immediately and automatically reset after the obstacle is cleared, effectively realizing the dual functions of overload protection and automatic recovery, and greatly improving the reliability and adaptability of the unloading scraper mechanism 230.

[0081] Preferably, both the fabric scraper mechanism 220 and the unloading scraper mechanism 230 are provided in multiple sets and are distributed along the circumference and / or axial direction of the rotor 210.

[0082] Specifically, by distributing multiple sets of material scraper mechanisms 220 and unloading scraper mechanisms 230 along the circumference and / or axial direction of the rotor 210, the interaction area and working frequency between the scraper assembly and the inner wall of the cylinder 10 can be significantly increased. This makes the coating and scraping operations of the material more continuous, uniform, and efficient in both the circumferential and axial directions, effectively avoiding the processing blind spots or capacity bottlenecks that may occur with a single set of scrapers. This greatly improves the processing capacity, drying uniformity, and production efficiency of the entire thin-layer dryer. At the same time, the setting of multiple sets of scrapers also makes the load distribution more balanced, which is conducive to extending the overall service life of the rotor 210 and the drive system 30.

[0083] Preferably, the drive system 30 includes a motor and a reducer located outside the cylinder 10.

[0084] Preferably, the first scraper 222 and / or the second scraper 232 are installed in a detachable manner.

[0085] Working principle: The drive system 30 drives the scraper rotor assembly 20 and multiple sets of material spreading scraper mechanisms 220 and unloading scraper mechanisms 230 fixed on the rotor 210 to rotate inside the cylinder 10. The material spreading scraper mechanism 220 presses the first scraper 222 against the cylinder wall through the first elastic pressing component 223, coating the material into a thin film. Its first spacing adjustment component 224 can precisely compensate for blade wear. When encountering an obstacle, the first scraper 222 can compress the spring 2232 to retract and avoid it. The unloading scraper mechanism 230 presses the second scraper 232 against the cylinder wall to scrape the material through the torsion spring 234. Its second spacing adjustment component 235 can adjust the angle of the positioning plate 2352 to set the working limit position of the scraper to compensate for wear. When encountering an obstacle, the second scraper 232 is forced to rotate a certain angle to avoid it. The two work together to achieve convenient and accurate compensation after wear and automatic overload protection during operation, ensuring efficient, stable and reliable continuous operation of the equipment. When the operator needs to compensate for the wear of the first scraper 222, the adjusting screw 2241 is rotated counterclockwise. Since the adjusting screw 2241 is engaged with the threaded seat 2242 fixedly installed in the first mounting base 221, the rotation will cause the adjusting screw 2241 to move axially forward and backward relative to the threaded seat 2242. The bottom end of the adjusting screw 2241 abuts against the first scraper 222 on the movable seat 2231. Therefore, when the adjusting screw 2241 is rotated towards the inner wall of the cylinder 10, it will push the entire movable seat 2231 to slide synchronously along the first mounting base 221, thereby driving the first scraper 222 fixed thereon to move towards the cylinder wall, increasing the distance between it and the cylinder wall. Conversely, when the adjusting screw 2241 is rotated outward, the elastic force stored in the first spring 2232 will push the movable seat 2231 to move away from the threaded seat 2242, thereby reducing the distance between the first scraper 222 and the cylinder wall.

[0086] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A self-adjusting mechanism for the scraper angle of a thin-layer drying machine, characterized in that, include: Cylinder (10); The scraper rotor assembly (20) is rotatably disposed within the cylinder (10); The drive system (30) is connected to the scraper rotor assembly (20) for driving its rotation; The scraper rotor assembly (20) includes: Rotor (210); At least one set of fabric scraper mechanism (220) is provided on the outer wall of the rotor (210) for coating the material into a thin layer on the inner wall of the cylinder (10); At least one set of unloading scraper mechanism (230) is provided on the outer wall of the rotor (210) for scraping the dried material off the inner wall of the cylinder (10); The fabric scraper mechanism (220) includes: The first mounting base (221) is fixed to the rotor (210); First scraper (222); The first elastic pressing component (223) is disposed between the first mounting base (221) and the first scraper (222) for providing the first scraper (222) with an elastic force that presses it against the inner wall of the cylinder (10); The first spacing adjustment component (224) is used to adjust the spacing between the first scraper (222) and the inner wall of the cylinder (10) in the initial state of elastic compression; The unloading scraper mechanism (230) includes: The second mounting base (231) is fixed to the rotor (210); Rotating shaft (233); The second scraper (232) is fixed on the rotating shaft (233) and rotatably mounted on the second mounting base (231) via the rotating shaft (233); The second elastic clamping assembly (234), connected to the rotating shaft (233), is used to provide the second scraper (232) with torque to press it against the inner wall of the cylinder (10); The second spacing adjustment component (235) is used to adjust the spacing between the second scraper (232) and the inner wall of the cylinder (10) in the initial state of elastic compression.

2. The self-adjusting mechanism for the scraper angle of a thin-layer drying machine according to claim 1, characterized in that: The first spacing adjustment component (224) includes an adjustment screw (2241). The first mounting base (221) is provided with a threaded seat (2242) that is threadedly engaged with the adjustment screw (2241). Rotating the adjustment screw (2241) can drive the first scraper (222) and the first elastic clamping component (223) to move relative to the first mounting base (221).

3. The self-adjusting mechanism for the scraper angle of a thin-layer drying machine according to claim 2, characterized in that: The first elastic clamping assembly (223) includes a movable seat (2231) and a first spring (2232). The movable seat (2231) is slidably sleeved on the first mounting base (221). The first scraper (222) is detachably mounted on the movable seat (2231). The first spring (2232) is located between the threaded seat (2242) and the movable seat (2231) and is sleeved on the adjusting screw (2241).

4. The self-adjusting mechanism for the scraper angle of a thin-layer drying machine according to claim 1, characterized in that: The second spacing adjustment assembly (235) includes a positioning block (2351) radially fixed to the end of the rotating shaft (233) and a positioning disk (2352) rotatably disposed on the second mounting base (231). The positioning disk (2352) is provided with a limiting part (2353) that cooperates with the positioning block (2351) to limit the maximum rotation angle of the second scraper (232).

5. The self-adjusting mechanism for the scraper angle of a thin-layer drying machine according to claim 4, characterized in that: The limiting part (2353) is a positioning pin fixed inside the positioning disk (2352), and the positioning block (2351) can abut against the positioning pin during the rotation stroke.

6. A self-adjusting mechanism for the scraper angle of a thin-layer drying machine according to claim 4 or 5, characterized in that: It also includes a locking element (2354) for locking the rotational position of the positioning disk (2352).

7. The self-adjusting mechanism for the scraper angle of a thin-layer drying machine according to claim 1, characterized in that: The second elastic clamping component (234) is a torsion spring, which is sleeved on the rotating shaft (233). One end of the torsion spring abuts against the second mounting base (231), and the other end abuts against the rotating shaft (233).

8. The self-adjusting mechanism for the scraper angle of a thin-layer drying machine according to claim 1, characterized in that: Both the fabric scraper mechanism (220) and the unloading scraper mechanism (230) are provided in multiple sets and are distributed along the circumference and / or axial direction of the rotor (210).

9. The self-adjusting mechanism for the scraper angle of a thin-layer drying machine according to claim 1, characterized in that: The drive system (30) includes a motor and a reducer located outside the cylinder (10).

10. The self-adjusting mechanism for the scraper angle of a thin-layer drying machine according to claim 1, characterized in that: The first scraper (222) and / or the second scraper (232) are installed in a detachable manner.

Images