Self-adjustable cleaning disc dryer and drying system and process

Abstract

This invention relates to a self-adjusting, cleaning disc-type dryer and its drying system and process. Each disc has an adaptive scraping assembly and an active anti-sticking cleaning assembly on both its inner and outer sides. The adaptive scraping assembly features a split-type scraper, including a tension spring, a support platform, and symmetrically arranged left and right scraper blades. The upper cutting edges of the left and right scraper blades directly contact the adjacent disc surface, and the support platform is horizontally positioned below the cutting edges of the blades. Each scraper blade is mounted in a blade holder, the lower end of which is hinged to a support. A connecting lug is located on the inner side of the blade holder. The tension spring is connected to the connecting lugs on both sides, and is in a completely horizontal state. The active anti-sticking cleaning assembly actively cleans residual material accumulated on the surface of the support platform. This invention solves the technical problems of material sticking and clumping on the scraper blades and incomplete scraping due to spring failure in existing technologies.

Description

Technical Field

[0001] This invention relates to the field of disc dryer technology, specifically to a self-regulating disc dryer, drying system, and process. Background Technology

[0002] The chemical, pharmaceutical, and wastewater treatment industries continuously generate large quantities of high-concentration mother liquor during production processes. This type of mother liquor is characterized by high COD concentration (COD≥10000mg / L), high viscosity (μ≥10CP), and high salt content (TDS≥120000mg / L). Its complex composition and tendency for salt crystallization make it a difficult-to-treat industrial wastewater. Currently, the industry commonly employs a drying and volume reduction process to achieve solid-liquid separation and volume reduction for this type of mother liquor. The liquid to be dried is sprayed onto a steam-heated disc surface using a spraying device. The liquid evaporates on the disc surface, while the target drying material adheres to the disc surface. As the disc rotates, the drying material rotates once, completing the drying process. Afterward, it is scraped off by a scraper mounted on the disc. Finally, residual waste gas is discharged, thus completing the drying process.

[0003] In practical applications, existing disc dryers have the following significant drawbacks: (1) Problems of material sticking and clumping on the scraper: When processing high-viscosity materials that are prone to sticking to the wall, ordinary scrapers are of a single-piece structure (see Figure 4 During the scraping process, a small amount of material will adhere to the platform surface. Over time, this residual material gradually hardens and clumps due to heat and oxidation, forming a hard accumulation layer. This not only increases the operating resistance of the equipment but can also cause the discharge to become jammed and obstructed.

[0004] (2) Problem of scraper gap failure: Traditional scrapers usually use a structure of springs pressing the pressure plate in the upper and lower directions to maintain the contact between the blade and the disc. However, under long-term operation and spindle vibration, the upper and lower springs are prone to fatigue and relaxation. In actual use, the springs may fail in about 15 days; mechanical wear may also cause the connecting parts to loosen. Once the spring force weakens, the pressure plate loosens and moves upward, and the gap between the scraper and the disc will increase, resulting in the material on the disc surface not being completely removed, which seriously affects the heat transfer efficiency and drying effect.

[0005] Therefore, there is an urgent need to develop a new type of disc dryer that can automatically clean up the material accumulated on the scraper and maintain a stable zero-gap contact between the scraper and the disc surface for a long period of time. Summary of the Invention

[0006] The purpose of this invention is to provide a self-adjusting, cleaning disc-type dryer, drying system, and process to solve the technical problems in the prior art where the scraper easily sticks to material and clumps, and the scraping is not clean due to spring failure.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a disc dryer capable of self-adjusting cleaning, wherein several discs 3 are arranged side by side, and an adaptive scraping component 1 and an active anti-stick cleaning component 2 are provided on both the inner and outer sides of each disc. The adaptive scraping assembly has a split scraper, including a tension spring 13, a support platform 19, and a symmetrically arranged left scraper blade 11 and right scraper blade 12. The upper edge of the left and right scraper blades directly contacts the surface of the adjacent disc 3, and the support platform is horizontally arranged on the inner side below the edge of the left and right scraper blades. Each scraper blade is installed in a blade holder 17, the lower end of which is hinged to a support 16. A connecting lug 14 is provided on the inner side of the blade holder 17. The two ends of the tension spring 13 are connected to the connecting lugs 14 on both sides respectively. Two supports 16 are symmetrically arranged on the base, and a support plate 18 is provided between the two supports. The lower end of the support plate 18 is fixed to the base, and the tension spring is in a completely horizontal state. Horizontal connecting plates are provided in the middle of the opposite sides of the two scraper blades. One side of the horizontal connecting plate abuts against the scraper body, and the other side is connected to the horizontal intermediate plate. The horizontal intermediate plate is fixed to the support plate 18. The left and right scraper blades together form an inverted "V" shaped opening structure. The active anti-stick cleaning component is used to actively clean residual materials accumulated on the surface of the support platform.

[0008] Furthermore, the inner sides of the horizontal connecting plate and the bearing platform 19 are provided with elongated adjustment holes, which can be used to adjust the contact state between the horizontal connecting plate, the bearing platform and the scraper blade before the equipment is used.

[0009] Furthermore, the lower end of the blade holder 17 is hinged to the support 16 by a pin, forming a rotatable lever fulcrum. Since the blade holder rotates around the bottom pin 15 with the scraper blade, and the left and right scraper blades are inclined with a "narrower at the bottom and wider at the top" posture, the inward pulling force applied by the tension spring in the middle and lower part will be converted into an outward expanding torque of the upper working end of the scraper blade through the lever principle and the counteracting effect of the horizontal connecting plate, which will press against the disc surface. When the working surface of the scraper blade wears down and becomes shorter, or when it encounters hard materials that need to be avoided, the entire scraper will swing slightly around the pin 15.

[0010] Furthermore, the active anti-stick cleaning assembly includes a drive shaft 21, a cleaning blade 22, a partition plate 23, a left track 24, and a right track 25. The left track 24 and the right track 25 are arranged side by side, with one end of each track connected to the drive shaft 21 via a drive gear. The drive gear meshes with the inner surface of the track and is connected to the drive shaft via a key. A connecting ring 26 is also provided on the drive shaft between the two tracks. The connecting ring 26 is connected to the drive shaft via a bearing, and the connecting ring is fixed to one end of the partition plate 23. The partition plate does not rotate when the drive shaft rotates. The other ends of the left and right tracks are supported and driven by driven gears. A connecting shaft is provided between the two driven gears to enable synchronous transmission of the two tracks. The other end of the partition plate is fixed to the connecting shaft between the two driven gears via a bearing, thus separating the left and right tracks. Several cleaning blades 22 are provided on each track. The upper end of each cleaning blade is fixed to the track, and the lower end of the blade contacts the corresponding support platform 19. The lower end of the partition plate 23 is connected to the horizontal center plate, and the two sides of the horizontal center plate are fixed together with the two side bearing platforms. The drive shaft is connected to the sweeping motor, which provides power for active sweeping.

[0011] Furthermore, the number of active anti-stick cleaning components is the number of discs + 1. All active anti-stick cleaning components share one cleaning motor, or multiple sets of active anti-stick cleaning components share one cleaning motor for zone control, or each active anti-stick cleaning component is equipped with its own cleaning motor; the cleaning motor is centrally controlled by a control unit.

[0012] Furthermore, a number of equally spaced cleaning blades 22 are provided on the underside of each track, while no cleaning blades are provided on the upper side of the track; the cleaning blades are generally in the shape of a right-angled trapezoid, referred to as trapezoidal cleaning blades, and the inclined waist side of the right-angled trapezoid avoids the mounting nuts on the support platform 19.

[0013] Furthermore, the spacing between the cleaning blades is set to 5-10cm, and they are directly integrally molded and connected to the outer surface of the annular track.

[0014] Furthermore, the dryer is equipped with a control unit, which is implemented by a PLC. During operation, the PLC collects the pulse signal of the main shaft motor 5 of the dryer in real time. When the cumulative number of rotations of the main shaft reaches the preset number of cleaning rotations, it is determined that the material accumulation on the bearing platform has reached the threshold, and a signal is immediately output to start the cleaning motor. After the sweeping motor starts, it drives the track to rotate at high speed, and the sweeping blades perform a thorough "comb-like" scraping of the carrying platform; Set the cleaning time t. After the cleaning motor runs continuously for the set cleaning time, the PLC automatically cuts off the power, the cleaning components stop, and the equipment returns to normal drying mode. During the cleaning process, the high-viscosity material is actively and forcibly peeled off from the carrying platform and falls into the hopper of the dryer.

[0015] Secondly, the present invention also provides a drying process, wherein the drying machine described above is used to rapidly dry high-concentration materials.

[0016] Thirdly, the present invention also protects a drying system, which uses the aforementioned dryer for rapidly drying high-concentration materials, wherein the high-concentration materials have a COD concentration of COD≥10000mg / L, a system viscosity of μ≥10CP, and a salt content of TDS≥120000mg / L.

[0017] Compared with the prior art, the present invention has the following significant advantages: 1. Improved scraping thoroughness: This invention replaces vertical clamping with the support of a horizontal connecting plate and the tension of a horizontal spring. By utilizing the principle of mechanical decomposition, it eliminates the problem of increased gaps caused by vibration and spring fatigue, ensuring that there is no residual material layer on the disc surface and improving heat exchange efficiency.

[0018] 2. Adaptable to high viscosity conditions: This invention adopts a motor-driven trapezoidal cleaning array, changing "passive anti-sticking" to "active de-sticking", effectively solving the problem of high viscosity materials accumulating and hardening on the back of the scraper, and reducing the frequency of downtime for cleaning.

[0019] 3. Strong structural stability: The symmetrical tension springs have self-balancing characteristics, which makes the scraper more evenly stressed during high-speed rotation or reciprocating motion, reducing abnormal vibration of the equipment.

[0020] This invention specifically optimizes the scraping mechanism and scraper structure of a disc dryer to address the characteristics of high COD, high viscosity, and high salt content mother liquor. With precisely adjustable scraper gaps, it can remove viscous materials and crystalline salt scale adhering to the disc heat exchange surface in real time and thoroughly, eliminating scraping dead corners. This fundamentally prevents material accumulation, crystallization blockage, and equipment jamming and shutdown, enabling continuous and stable 24-hour operation of the equipment and significantly reducing equipment failure rate, cleaning frequency, and maintenance costs.

[0021] 4. Wide adaptability to operating conditions and low energy consumption: The whole process can be adapted to industrial high-concentration mother liquor treatment scenarios with different COD concentrations, different viscosities and different salt contents. It has strong versatility and high operational stability. The operating power of the equipment can be adjusted according to the real-time operating conditions to avoid the ineffective energy consumption of traditional fixed-frequency equipment. Under the premise of ensuring the treatment effect, it can effectively reduce the operating energy consumption and improve the economic efficiency of industrial application of the process.

[0022] 5. Strong industrial adaptability: The entire process is seamlessly connected, highly automated, and easy to operate and maintain. It can be directly applied to the large-scale and continuous industrial processing of high-concentration mother liquor in multiple industries such as chemical, environmental protection, and pharmaceutical. It has a wide range of applications and high industrial value. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the self-adjusting cleaning disc dryer of the present invention. Figure 2 This is a schematic diagram of the overall structure of the adaptive scraping component and the active anti-sticking cleaning component in this invention; Figure 3 This is a schematic diagram of the main structure of the adaptive scraping component and the active anti-sticking cleaning component in this invention; Figure 4 This is a schematic diagram of the structure of an existing scraper.

[0024] In the diagram, 1 is the adaptive scraping assembly, 2 is the active anti-stick cleaning assembly, 3 is the disc, 4 is the funnel, and 5 is the main shaft motor; 11 Left scraper blade, 12 Right scraper blade, 13 Tension spring, 14 Connecting lug, 15 Pin, 16 Support, 17 Blade holder, 18 Support plate, 19 Bearing platform, 20 Horizontal connecting plate; 21 Drive shaft, 22 Sweeping blade, 23 Divider plate, 24 Left track, 25 Right track, 26 Connecting ring. Detailed Implementation

[0025] The present invention will be further explained below with reference to the embodiments and accompanying drawings, but this is not intended to limit the scope of protection of this application.

[0026] This invention relates to a self-adjusting disc dryer (see [link]). Figure 1-3 The device includes a main shaft motor 5, several discs 3 arranged side by side, a funnel 4 set near the material discharge of the discs, and an adaptive scraping component 1 and an active anti-sticking cleaning component 2 set on both the inner and outer sides of each disc. Only one set of adaptive scraping component 1 and active anti-sticking cleaning component 2 is installed in the space between two discs, and the two are installed at an angle towards the funnel.

[0027] The drying unit uses steam to heat and evaporate the material, removing the solvent. After entering the device, the material first enters the distribution pipe. The drying unit has built-in heating discs with hollow interiors. The material is evenly distributed onto the heating discs from the distribution pipe. Steam is input from the steam inlets at both ends of the drying unit to ensure uniform heating. The material evaporates and crystallizes on the surface of the discs. The dried material is then peeled off and collected in the lower funnel 4 by the rotation of the discs and the combined action of the scrapers on the sides of the discs.

[0028] To prevent material from accumulating and solidifying on the scraper blade surface during long-term operation, this invention incorporates an active anti-stick cleaning component in the disc gap. This component operates by rotating and pushing material off the scraper blade from the disc surface onto the upper surface of the support platform within the disc gap. The active anti-stick cleaning component then cleans any residual material accumulated on the separated support platform, promptly removing material that has accumulated on the scraper surface during long-term operation. This avoids the problems of existing technologies where the scraper is directly connected to the bottom via a vertical spring, which tends to fail after about ten days. The material solidifies and hardens over time, leading to poor scraping performance, corrosion, and a shortened lifespan. Furthermore, it can cause the scraper's center of gravity to shift, resulting in direct contact with the disc and damage, ultimately causing equipment downtime. This invention separates the existing one-piece scraper into left and right scraper blades and two supporting platforms connected to them. Combined with the active anti-stick cleaning component, this design prevents material accumulation.

[0029] The core improved components of this invention are mainly the adaptive scraping assembly and the active anti-sticking cleaning assembly, which will be described in detail below.

[0030] (1) The adaptive scraping assembly (main scraper system) includes a tension spring 13, a support plate 18, a bearing platform 19, and symmetrically arranged left scraper blades 11 and right scraper blades 12. Each scraper blade is installed in a blade holder 17. The lower end of the blade holder 17 is hinged to a support 16 via a pin 15. A connecting lug 14 is provided on the inner side of the blade holder 17. Both ends of the tension spring 13 are provided with hook structures to hook onto the two connecting lugs 14 on both sides. The two supports 16 are symmetrically arranged on the base. A support plate 18 is provided between the two supports. The lower end of the support plate 18 is fixed to the base, and a through hole is provided in the middle for the tension spring to pass through. Both ends of the tension spring 14 pass through the through hole and are fixed to the connecting lugs on the corresponding sides. The tension spring is in a completely horizontal state. A horizontal connecting plate 20 is provided in the middle of the opposite sides of the two scraper blades. One side of the horizontal connecting plate abuts against the scraper body, but the two are not welded together. The other side is connected to the horizontal intermediate plate, which is fixed on the support plate 18.

[0031] The entire adaptive scraping assembly is installed at an angle towards the funnel on the base at the bottom. The left and right scraper blades together form an inverted "V" shaped opening structure. This design allows the scraper to penetrate deep into the central area of ​​the equipment. The upper edge of the left and right scraper blades directly contacts the surface of the adjacent heating disc 3. A support platform 19 is horizontally set on the inner side below the edge of the left and right scraper blades. The two support platforms are installed symmetrically. The two scraper blades are responsible for scraping the material off the surface of the adjacent disc 3. Most of the material will fall naturally into the funnel 4 below, while a small part will adhere to the scraper blades or the support platform.

[0032] The inner sides of the horizontal connecting plate 20 and the bearing platform 19 are provided with elongated adjustment holes, which can be used to adjust the contact state between the horizontal connecting plate, the bearing platform and the scraper blade before the equipment is used.

[0033] The lower end of the blade holder 17 is hinged to the support 16 via a pin 15, forming a rotatable lever fulcrum. Since the blade holder, carrying the scraper blades, rotates around the bottom pin 15, and the left and right scraper blades are tilted with a "narrower at the bottom and wider at the top" orientation, the inward pulling force applied by the tension spring in the lower middle part is converted into an outward expanding torque at the upper working end of the scraper blade, pressing it tightly against the disc surface, through the lever principle and the counteracting effect of the horizontal connecting plate. When the working surface of the scraper blade wears down and shortens, or when encountering excessively hard materials that need to be avoided, the entire scraper (consisting of the blade holder, connecting lug, scraper blades, and support platform) will oscillate slightly around this pin 15.

[0034] In this invention, there can be multiple tension springs, which are arranged in parallel and connected to the blade holder where the left and right scraper blades are located. In this embodiment, 2-3 tension springs are set and arranged in the front, middle and rear parts respectively, so that the whole is evenly stressed.

[0035] (2) Active anti-stick cleaning assembly (secondary scraper system) adopts a closed-loop track drive system, including a drive shaft 21, a cleaning blade 22, a partition plate 23, a left track 24, and a right track 25. The left track 24 and the right track 25 are arranged side by side, and one end of each is connected to the drive shaft 21 through a drive gear. The drive gear meshes with the inner surface of the track and is connected to the drive shaft through a key. A connecting ring 26 is also provided on the drive shaft between the two tracks. The connecting ring 26 is connected to the drive shaft through a bearing, and the connecting ring is fixed to one end of the partition plate 23. The partition plate does not rotate when the drive shaft rotates. The other end of the left and right tracks is supported and driven by driven gears. A connecting shaft is provided between the two driven gears to enable synchronous transmission of the two tracks. The other end of the partition plate is fixed to the connecting shaft between the two driven gears through a bearing, and the partition plate separates the left and right tracks. The track is an annular synchronous belt. The drive shaft is connected to the sweeping motor (not shown in the figure). All active anti-stick sweeping components can share one sweeping motor, or each active anti-stick sweeping component can be equipped with its own sweeping motor, or several groups can share one sweeping motor. Multiple sweeping motors can also be controlled in zones. All sweeping motors are centrally controlled through a control unit. The sweeping motors serve as the power input source for controlling the track operation. The drive gear and driven gear cooperate to drive the track, support the track, and adjust the tension to ensure that the track does not derail or slip during high-speed movement.

[0036] Several cleaning blades 22 are provided at equal intervals on each track. The upper end of each cleaning blade is fixed to the track, and the lower end of the blade contacts the corresponding support platform 19. Preferably, the cleaning blade is in the shape of a right-angled trapezoid, referred to as a trapezoidal cleaning blade, and the inclined waist side of the right-angled trapezoidal section avoids the mounting nut on the support platform 19. The lower end of the partition plate 23 is connected to the horizontal center plate, and the two sides of the horizontal center plate are fixed together with the two side bearing platforms to provide connection support.

[0037] Multiple trapezoidal sweeping blades are not independently mounted on the shaft via bearings, but are directly integrally formed and connected to the outer surface of the annular track at a fixed spacing of 5-10 cm. The trapezoidal sweeping blades have a regular trapezoidal cross-section and are evenly arranged like teeth across the entire track (the diagram illustrates sweeping blades only below the track, not above; however, this invention can also have sweeping blades on the entire track). This arrangement allows all blades to form a continuous, closed sweeping loop. During operation, the sweeping motor drives the drive shaft, and the track moves the trapezoidal sweeping blades back and forth across the support platform.

[0038] In this invention, the drive shaft and coupling can be fixed above the adaptive scraping assembly using bearing housings, external brackets, etc.

[0039] Working principle: (1) The principle of adaptive scraping and gap Traditional pain point: The old structure relies on vertical springs for clamping. Once the springs fatigue or the main shaft vibrates, the vertical force weakens, the pressure plate loosens and moves upward, resulting in a larger gap between the blades and the disc, and the material cannot be scraped off sufficiently, affecting the operation of the machine.

[0040] The principle of this invention: The "constant action" mechanism essentially transforms the supporting force of the horizontal connecting plate on the scraper blade, combined with the linear tension of the spring, into a dynamic adhesion force between the scraper blade and the disc surface through a clever mechanical structure. Specifically, the horizontal connecting plate, through manual adjustment, abuts against the inclined blades on both sides, applying an outward supporting force to the scraper blade; the horizontally arranged tension spring, in its pre-tensioned state, continuously applies a horizontal tension pointing towards the center to the inclined blades on both sides. Since the scraper blade is not installed vertically but is inclined and forms a lever structure around the fixed fulcrum at the bottom, an outward torque is naturally generated when scraping under the combined action of the horizontal supporting force and the spring tension. This torque forces the upper edge of the scraper blade to press tightly against the disc surface, thus effectively converting the resultant force of the horizontal supporting force and the tension into a normal pressure perpendicular to the disc surface. Even more ingeniously, this mechanical transmission possesses adaptive compensation characteristics: during long-term operation, even if the scraper blade edge gradually wears down and shortens due to friction, the tension of the spring will adaptively adjust, driving the scraper blade to deflect slightly outward around the bottom fulcrum, automatically filling the gap created by wear. As long as the spring remains within its elastic working range, this contact force derived from the lever principle will remain constant, thus fundamentally ensuring "zero-gap" contact between the scraper and the disc, completely eliminating the problem of incomplete scraping caused by component wear or vibration.

[0041] (2) Active anti-sticking and self-cleaning principle Traditional pain point: After high-viscosity materials are scraped off, they tend to stick to the surface of the pressure plate like mud. If not cleaned for a long time, they will oxidize and harden into lumps, which may cause serious material accumulation on the surface of the pressure plate, resulting in poor material discharge and requiring frequent machine shutdowns for cleaning. In severe cases, it can affect the center of gravity of the pressure plate, which in turn affects the gap between the blades on both sides and the disc, making it impossible to scrape off the material completely and affecting the operation of the machine.

[0042] When the sweeping motor starts, it drives the drive gear to rotate. Through the precise meshing of the gear and the internal teeth of the track, the entire track is driven to circulate. Since the trapezoidal sweeping blades are fixed to the track, they are forced to follow the track in the same circular motion.

[0043] Working stroke (lower side): The sweeping blade located below moves horizontally with the track. Its sweeping blade edge is in close contact with the surface of the carrying platform, like a bulldozer blade, pushing or scraping the accumulated material on the carrying platform forward.

[0044] Return stroke (upper side): After completing the sweeping, the sweeping blade returns to the top along the track, passing around the end wheel system. At this time, the sweeping blade is in an unloaded return state, ready for the next cycle.

[0045] This invention includes a control unit, which employs a PLC-based intelligent control system to achieve unmanned intervention in the cleaning process. Triggering mechanism: The PLC collects the pulse signal of the spindle motor 5 in real time. When the counter displays that the spindle has rotated a total of 10 revolutions, the system determines that the material accumulation on the carrying platform has reached the threshold and immediately outputs a signal to start the cleaning motor.

[0046] Operation process: After the sweeping motor starts, it drives the track assembly to rotate at high speed, and the trapezoidal sweeping blades perform a thorough "comb-like" scraping of the carrying platform.

[0047] Reset Mechanism: After setting the cleaning time t, the cleaning motor runs continuously until the set cleaning time (approximately 60 seconds). Then, the PLC automatically cuts off the power, the cleaning components stop, and the equipment returns to normal drying mode. At this point, it restarts collecting the number of spindle rotations, waiting for the next cleaning cycle. This design ensures cleaning effectiveness while avoiding unnecessary energy consumption.

[0048] Forced shedding: This active mechanical force forcibly peels the high-viscosity material adhering to the support platform off the support platform and makes it fall into the funnel 4, preventing it from being heated and hardened and agglomerated on the support platform for a long time, and ensuring the continuous and stable discharge.

[0049] Any aspects not covered in this invention are applicable to existing technologies.

Claims

1. A disc-type dryer capable of self-adjusting cleaning, comprising several discs arranged side by side, characterized in that, Each disc is equipped with an adaptive scraping component and an active anti-stick cleaning component on both the inner and outer sides; The adaptive scraping assembly has a split scraper, including a tension spring, a support platform, and symmetrically arranged left and right scraper blades. The upper cutting edges of the left and right scraper blades directly contact the adjacent disc surface, and the support platform is horizontally arranged on the inner side below the cutting edges of the left and right scraper blades. Each scraper blade is installed in a blade holder, the lower end of which is hinged to a support. A connecting lug is provided on the inner side of the blade holder. The two ends of the tension spring are connected to the connecting lugs on both sides respectively. Two supports are symmetrically arranged on the base, and a support plate is provided between the two supports. The lower end of the support plate is fixed to the base, and the tension spring is in a completely horizontal state. Horizontal connecting plates are provided in the middle of the opposite sides of the two scraper blades. One side of the horizontal connecting plate abuts against the scraper body, and the other side is connected to the horizontal intermediate plate, which is fixed to the support plate. The left and right scraper blades together form an inverted "V" shaped opening structure. The active anti-stick cleaning component is used to actively clean residual materials accumulated on the surface of the support platform.

2. The disc-type dryer according to claim 1, characterized in that, The horizontal connecting plate and the inner side of the bearing platform are both provided with elongated adjustment holes, which can be used to adjust the contact state between the horizontal connecting plate, the bearing platform and the scraper blade before the equipment is used by bolts.

3. The disc-type dryer according to claim 1, characterized in that, The lower end of the blade holder is hinged to the support by a pin, forming a rotatable lever fulcrum. As the blade holder rotates around the bottom pin with the scraper blade, and the left and right scraper blades are inclined with a "narrower at the bottom and wider at the top" posture, the inward pulling force applied by the tension spring in the middle and lower part will be converted into an outward expanding torque of the upper working end of the scraper blade through the lever principle and the counteracting effect of the horizontal connecting plate, which will keep it close to the disc surface. When the working surface of the scraper blade wears and becomes shorter, or when it encounters hard materials that need to be avoided, the entire scraper will swing slightly around the pin.

4. The disc-type dryer according to claim 1, characterized in that, The active anti-stick cleaning assembly includes a drive shaft, cleaning blades, a separator plate, a left track, and a right track. The left and right tracks are arranged side by side, with one end of each track connected to the drive shaft via a drive gear. The drive gear meshes with the inner surface of the track and is connected to the drive shaft via a key. A connecting ring is also provided on the drive shaft between the two tracks, and the connecting ring is connected to the drive shaft via a bearing. The connecting ring is also fixed to one end of the separator plate, so that the separator plate does not rotate when the drive shaft rotates. The other ends of the left and right tracks are supported and driven by driven gears, and a connecting shaft is provided between the two driven gears to enable synchronous transmission of the two tracks. The other end of the separator plate is fixed to the connecting shaft between the two driven gears via a bearing, thus separating the left and right tracks. Several cleaning blades are installed on each track. The upper end of each cleaning blade is fixed to the track, and the lower cutting edge contacts the corresponding support platform. The lower end of the partition plate is connected to the horizontal center plate, and the two sides of the horizontal center plate are fixed together with the two side bearing platforms. The drive shaft is connected to the sweeping motor, which provides power for active sweeping.

5. The disc-type dryer according to claim 4, characterized in that, The number of active anti-stick cleaning components is the number of discs + 1. All active anti-stick cleaning components share one cleaning motor, or multiple active anti-stick cleaning components share one cleaning motor for zone control, or each active anti-stick cleaning component is equipped with its own cleaning motor; the cleaning motors are centrally controlled by a control unit.

6. The disc-type dryer according to claim 4, characterized in that, Several equally spaced cleaning blades are provided on the underside of each track, while no cleaning blades are provided on the upper side of the track; the cleaning blades are generally in the shape of a right-angled trapezoid, referred to as trapezoidal cleaning blades, and the inclined waist side of the right-angled trapezoid avoids the mounting nuts on the bearing platform.

7. The disc-type dryer according to claim 4, characterized in that, The spacing between the cleaning blades is set to 5-10cm, and they are directly integrally molded and connected to the outer surface of the ring track.

8. The disc-type dryer according to claim 4, characterized in that, The dryer is equipped with a control unit, which is implemented by a PLC. During operation, the PLC collects the pulse signal of the dryer's main shaft motor in real time. When the cumulative number of rotations of the main shaft reaches the preset number of cleaning rotations, it is determined that the material accumulation on the bearing platform has reached the threshold, and a signal is immediately output to start the cleaning motor. After the sweeping motor starts, it drives the track to rotate at high speed, and the sweeping blades perform a thorough "comb-like" scraping of the carrying platform; Set the cleaning time t. After the cleaning motor runs continuously for the set cleaning time, the PLC automatically cuts off the power, the cleaning components stop, and the equipment returns to normal drying mode. During the cleaning process, the high-viscosity material is actively and forcibly peeled off from the carrying platform and falls into the hopper of the dryer.

9. A drying process, characterized in that, The process uses the drying machine described in any one of claims 1-8 to rapidly dry high-concentration materials.

10. A drying system, characterized in that, The system uses the dryer described in any one of claims 1-8 to rapidly dry high-concentration materials, wherein the high-concentration materials have a COD concentration of COD≥10000mg / L, a system viscosity of μ≥10CP, and a salt content of TDS≥120000mg / L.

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