A steam dryer with a function of adjusting the tube bundle spacing

Abstract

The present invention relates to the technical field of dryers, and particularly to a steam dryer with a function of adjusting the tube bundle spacing, which includes a tube core, a tube shell, a transmission assembly, a steam generation assembly, a condensate discharge assembly, and an exhaust air assembly. Among them, a number of tube cores are arranged in the tube shell, and the tube shell accommodates materials. The transmission assembly provides rotational power for the tube core, and the tube core stirs the materials to uniformly heat and advance the materials. The steam generation assembly is connected to one end of the tube core to convey steam into the tube core. The condensate discharge assembly is connected to the other end of the tube core to discharge the liquid water formed by the condensation of the steam in the tube bundle. The exhaust air assembly discharges the evaporation gas in the tube shell. The present invention can flexibly adjust the drying speed, is applicable to materials with different humidities and particle sizes. The closed tube shell is combined with negative pressure exhaust to reduce steam leakage and dust escape. The displacement generator drives the moving part to adjust the tube core spacing in real time, avoiding material blockage and adapting to materials with different particle sizes.

Description

Technical Field

[0001] The present invention relates to the technical field of dryers, and particularly relates to a steam dryer with a function of adjusting the tube bundle spacing. Background Art

[0002] As an indirect heating type drying equipment, the tube bundle dryer is widely used in industries such as chemical industry, food, and feed, and realizes drying through heat conduction between steam and materials. Although the traditional tube bundle dryer has advantages such as compact structure and low energy consumption, its technical limitations have gradually emerged in complex material processing and energy efficiency optimization. The specific problems are as follows:

[0003] The arrangement and spacing of the tube cores of the existing tube bundle dryers are fixed and cannot dynamically adjust the drying parameters according to the material properties (such as particle size, humidity, and thermal sensitivity). High-humidity materials require a larger heat transfer area to improve the evaporation efficiency, while heat-sensitive materials require a reduced tube bundle density to avoid local overheating and charring. The fixed tube bundle design of the existing technology limits the adaptability of the equipment to different materials, resulting in low drying efficiency or unstable product quality.

[0004] Parameters such as the rotational speed of the tube cores in the existing technology are usually set uniformly and cannot be independently controlled. When the materials need to be differentially processed in different drying stages (such as preheating, main drying, and cooling), the fixed parameters are likely to cause energy waste or uneven drying. Summary of the Invention

[0005] In order to solve the technical problem of misprocessing of special-shaped neodymium iron boron waste, the present invention provides a steam dryer with a function of adjusting the tube bundle spacing.

[0006] The technical solutions provided by the embodiments of the present invention are as follows:

[0007] A steam dryer with a function of adjusting the tube bundle spacing provided by an embodiment of the present invention includes a tube core, a tube shell, a transmission assembly, a steam generation assembly, a condensate discharge assembly, and an exhaust air assembly. Among them, a plurality of tube cores are arranged in the tube shell, the tube shell accommodates materials, the transmission assembly provides rotational power for the tube core, the tube core stirs the materials to uniformly heat and advance the materials, the steam generation assembly is connected to one end of the tube core to convey steam into the tube core, the condensate discharge assembly is connected to the other end of the tube core to discharge the liquid water formed by the condensation of the steam in the tube bundle, and the exhaust air assembly discharges the evaporation gas in the tube shell;

[0008] The tube core sequentially includes a metal tube and a baffle from the inside to the outside. The metal tube is hollow, steam enters the inside of the tube bundle through the metal tube, heat is transferred to the materials through the metal tube, the transmission assembly drives the metal tube to rotate, the baffle is movably installed on the outer surface of the metal tube, the baffle is connected and fixed to the transmission assembly, and the baffle stirs the materials during rotation to advance the materials.

[0009] Optionally, several cartridges are arranged longitudinally, the material advancement directions in any two adjacent cartridges are opposite, and the connection positions of the discharge port of the upper cartridge and the feed port of the lower cartridge correspond. The number, diameter, spacing, and rotation speed of the tube cores in each layer of cartridges are independently set.

[0010] Optionally, it further includes a dynamic spacing adjustment component, which is installed and fixed between the pipeline of the steam generation component and the tube core, and between the condensate discharge component and the tube core pipeline;

[0011] The dynamic spacing adjustment component includes a fixed part, a moving part, and a displacement generator. The fixed part is installed and fixed on the cartridge, and its position is on the outer side of the cartridge. The moving part is installed on the fixed part, and its position is on the inner side of the cartridge. The fixed part is fixedly connected to the pipeline of the steam generation component or the condensate discharge component, and the moving part is fixedly connected to the pipeline of the tube core;

[0012] The moving part is connected to the fixed part through a flexible hose, and the moving part is connected to the fixed part through a displacement generator. The displacement generator controls the moving part to displace relative to the fixed part;

[0013] The transmission component includes a driving gear, a driven gear, and a moving base. The driving gear is installed and fixed on the lower surface inside the cartridge, and a driven gear is arranged at the corresponding position on each tube core and installed and fixed on the outer surface of the tube core. The driving gear is installed and fixed on the moving base, and the moving base is passively moved through a slider and a slide rail. When the displacement generator of the dynamic spacing adjustment component works, it drives the driving gear on the moving base to move passively.

[0014] Optionally, the transmission component further includes a supporting driven wheel one, a supporting driven wheel two, and a supporting moving base. The supporting driven wheel one is installed and fixed at one end of the tube core, the supporting driven wheel two is installed on the supporting moving base, and the supporting moving base is installed and fixed on the lower surface inside the cartridge. The supporting moving base is passively moved through a slider and a slide rail. When the displacement generator of the dynamic spacing adjustment component works, it drives the supporting driven wheel two on the supporting moving base to move passively.

[0015] Optionally, each layer of cartridges is provided with at least one exhaust port, and each exhaust port is fixedly connected to an exhaust component. The exhaust component adjusts the pressure in the cartridge to a slightly negative pressure state. Each layer of cartridges is provided with two feed ports, one of which is used to connect to a material conveying device, and the other is used to connect to the discharge port of an adjacent cartridge. A detachable sealing cover is arranged at any discharge port.

[0016] Optionally, it further includes a material emergency storage device. Each shell is provided with two discharge ports. One discharge port is located corresponding to the feed port of the adjacent shell and is fixedly connected. The other discharge port is fixedly connected to the feed port of the material emergency storage device. Under normal circumstances, one discharge port is normally open, and the other discharge port is normally closed. When any shell fails, all the feed ports and discharge ports of the faulty shell are closed. One discharge port of the shell above the faulty shell is closed, and the other discharge port is opened to convey the material into the material emergency storage device. The discharge port of the material emergency storage device is connected to one feed port of all the shells.

[0017] Optionally, the baffle is coated with a superhydrophobic coating, and a number of protrusions are provided on the surface of the baffle. An elastic member is fixedly installed at the edge of the baffle. One end of the elastic member is fixedly connected to the baffle, and a vibration generator is fixedly installed at the other end of the elastic member. The vibration generated by the vibration generator is transmitted to the baffle through the elastic member.

[0018] Optionally, each shell is equipped with an inclination component that controls the inclination angle between the shell and the ground. The feed port and the discharge port of adjacent shells are connected by a hose.

[0019] Optionally, the hose is a high-strength plastic pipeline with a sealing function, and a support skeleton is provided in the hose.

[0020] Optionally, a temperature sensor and a humidity sensor are fixedly installed on the inner side of the shell, and a stress sensor is provided on the tube core to monitor the temperature, humidity in the shell and the stress of the tube core in real time.

[0021] The beneficial effects brought by the technical solution provided by the embodiment of the present invention at least include:

[0022] (1) Through the combined design of the metal tube and the baffle in the present invention, the steam heat is directly transferred to the material. At the same time, the baffle rotates to stir the material, reducing the drying blind area. The transmission component drives the tube core to rotate. Combined with the slightly negative pressure environment of the exhaust component, the drying speed can be flexibly adjusted, which is suitable for materials with different humidities and particle sizes. The enclosed shell is combined with negative pressure exhaust to reduce steam leakage and dust dispersion. The displacement generator drives the moving part to adjust the tube core spacing in real time, avoiding material blockage and adapting to materials with different particle sizes. The hose and support skeleton design ensure the reliable sealing of the steam pipeline during dynamic adjustment and reduce the leakage risk.

[0023] (2) The dynamic spacing adjustment of the present invention realizes the dynamic optimization of the contact area between tube cores according to the material viscosity.

[0024] (3) By providing an emergency storage device, the present invention enables emergency switching in case of a failure in the shell, avoiding production interruption. Additionally, the redundant design of the double discharge ports in the present invention allows for automatic switching to the emergency storage device in case of a failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 Schematic cross-sectional structure of a steam dryer with a tube bundle spacing adjustment function provided by an embodiment of the present invention Figure 1 。

[0027] Figure 2 Schematic diagram of the feeding and discharging logic of a steam dryer with a tube bundle spacing adjustment function provided by an embodiment of the present invention.

[0028] Figure 3 Schematic structure diagram of a steam dryer with a tube bundle spacing adjustment function provided by an embodiment of the present invention.

[0029] Figure 4 Schematic cross-sectional structure of a steam dryer with a tube bundle spacing adjustment function provided by an embodiment of the present invention Figure 2 。

[0030] Figure 5 Schematic diagram of the tube core structure of a steam dryer with a tube bundle spacing adjustment function provided by an embodiment of the present invention Figure 1 。

[0031] Figure 6 Schematic diagram of the tube core structure of a steam dryer with a tube bundle spacing adjustment function provided by an embodiment of the present invention Figure 2 。

[0032] Figure 7 Schematic diagram of the partial cross-sectional structure of a steam dryer with a tube bundle spacing adjustment function provided by an embodiment of the present invention.

[0033] Reference numerals: 1 - tube core, 11 - metal tube, 12 - baffle plate, 121 - protrusion, 122 - elastic member, 123 - vibration generator, 2 - tube shell, 21 - feed inlet, 22 - discharge outlet, 23 - exhaust port, 3 - transmission assembly, 31 - driving gear, 32 - driven gear, 33 - moving base, 34 - supporting driven wheel 1, 35 - supporting driven wheel 2, 36 - supporting moving base, 4 - steam generating assembly, 5 - condensate discharging assembly, 6 - exhaust air assembly, 7 - dynamic spacing adjustment assembly, 71 - fixed part, 72 - moving part, 8 - hose. Detailed implementation manners

[0034] The technical solutions in the present invention will be described below in conjunction with the accompanying drawings. It should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention.

[0035] As Figures 1 to 7 shown, an embodiment of the present invention provides a steam dryer with a function of adjusting the tube bundle spacing, including a tube core 1, a tube shell 2, a transmission assembly 3, a steam generating assembly 4, a condensate discharging assembly 5 and an exhaust air assembly 6. A plurality of tube cores 1 are arranged in the tube shell 2, and materials are accommodated in the tube shell 2. The transmission assembly 3 provides rotational power for the tube core 1, and the tube core 1 stirs the materials to uniformly heat and propel the materials. The steam generating assembly 4 is connected to one end of the tube core 1 to supply steam into the tube core 1, and the condensate discharging assembly 5 is connected to the other end of the tube core 1 to discharge the liquid water formed by the condensation of the steam in the tube bundle. The exhaust air assembly 6 discharges the evaporation gas in the tube shell 2.

[0036] The tube core 1 sequentially includes a metal tube 11 and a baffle plate 12 from the inside to the outside. The metal tube 11 is hollow, and steam enters the inside of the tube bundle through the metal tube 11. Heat is transferred to the materials through the metal tube 11. The transmission assembly 3 drives the metal tube 11 to rotate. The baffle plate 12 is movably installed on the outer surface of the metal tube 11 and is fixedly connected to the transmission assembly 3. The baffle plate 12 stirs the materials during rotation to propel the materials.

[0037] In the embodiment of the present invention, the steam generating assembly 4 adopts a two-stage superheating system (the first stage is 0.8 MPa / 165 °C, and the second stage is 0.6 MPa / 220 °C). The steam enters the metal tube 11 through a rotary joint (Web page 2 specification), and the condensate is discharged through a cyclone separator + double steam traps.

[0038] Each layer of the tube shell 2 of the exhaust assembly 6 is provided with two exhaust ports 23, and a centrifugal fan is used to maintain a slight negative pressure of -50~-100 Pa. The exhaust duct is connected to an activated carbon filter (filtration efficiency ≥ 95%), and the exhaust gas is discharged after being purified by HEPA.

[0039] In a possible implementation, a removable copying plate 12 is installed on the outer surface of the metal tube 11 through a rotating shaft, and the multi-layer tube shells 2 are arranged longitudinally, with a total of 4 layers. Adjacent tube shells 2 realize reverse advancement of materials through a tilting component. There are 14 tube cores 1 in each layer of tube shells 2, and the spacing between the tube cores 1 is adjusted within the range of 20-50mm through a dynamic spacing adjustment component 7.

[0040] In the embodiment of the present invention, by using a detachable copying plate 12 to install on the outer surface of the metal tube 11, it is not only convenient for maintenance and replacement, and the service life of the equipment is extended, but also the copying plate structure can be flexibly adjusted according to different material characteristics; the multi-layer tube shell 2 is arranged longitudinally, so that the equipment occupies a smaller area, and at the same time, the reverse propulsion of the material between each layer is achieved by tilting the component, which effectively extends the residence time of the material and improves the drying uniformity; 14 tube cores 1 are arranged on each layer, and the dynamic spacing adjustment component 7 is flexibly adjusted within the range of 20-50mm, which can optimize the processing density in real time according to the changes in material particle size and viscosity, taking into account both efficient drying and anti-blocking, and greatly improving the overall production efficiency and adaptability.

[0041] In a possible embodiment, a plurality of tube shells 2 are arranged longitudinally, the material advancement directions in any adjacent tube shells 2 are opposite, and the connection positions of the discharge port 22 in the upper tube shell 2 and the feed port 21 in the lower tube shell 2 correspond to each other, and the number, diameter, spacing and rotation speed of the tube cores 1 in each layer of the tube shell 2 are independently set.

[0042] In the embodiment of the present invention, by arranging a plurality of tube shells 2 longitudinally, designing the materials of adjacent layers to be pushed in opposite directions, and connecting the corresponding inlet and outlet ports above and below, the materials can be alternately reversely flowed inside the equipment, effectively increasing the path length and residence time of the materials, and improving the drying uniformity and efficiency. At the same time, the number, diameter, spacing and rotation speed of the tube cores 1 in each layer of tube shells 2 are independently set, and can be optimized and adjusted in a targeted manner according to the drying stage characteristics of materials at different levels, realizing refined control, enhancing the wide adaptability to different material types and drying requirements, and improving the overall process flexibility and production stability.

[0043] In a possible implementation, a dynamic spacing adjustment component 7 is further included, and the dynamic spacing adjustment component 7 is installed and fixed between the steam generating component 4 and the pipeline of the tube core 1 , and between the condensate discharge component 5 and the pipeline of the tube core 1 .

[0044] The dynamic spacing adjustment component 7 includes a fixed part 71, a moving part 72 and a displacement generator. The fixed part 71 is fixedly installed on the tube shell 2, and the position of the fixed part 71 is on the outer side surface of the tube shell 2. The moving part 72 is installed on the fixed part 71, and the position of the moving part 72 is on the inner side surface of the tube shell 2. The fixed part 71 is fixedly connected to the pipelines of the steam generation component 4 or the condensate discharge component 5, and the moving part 72 is fixedly connected to the pipelines of the tube core 1.

[0045] The moving part 72 is connected to the fixed part 71 through a flexible hose 8, and the moving part 72 is connected to the fixed part 71 through a displacement generator. The displacement generator controls the moving part 72 to displace relative to the fixed part 71.

[0046] The transmission component 3 includes a driving gear 31, a driven gear 32 and a moving base 33. The driving gear 31 is fixedly installed on the lower surface inside the tube shell 2, and a driven gear 32 is provided at the corresponding position on each tube core 1. The driven gear 32 is fixedly installed on the outer surface of the tube core 1. The driving gear 31 is fixedly installed on the moving base 33, and the moving base 33 realizes passive movement through a slider and a slide rail. When the displacement generator of the dynamic spacing adjustment component 7 works, it drives the driving gear 31 on the moving base 33 to perform passive movement.

[0047] In the embodiment of the present invention, by arranging the dynamic spacing adjustment component 7 between the pipelines of the steam generation component 4 and the condensate discharge component 5, and using the fixed part 71 and the moving part 72 to cooperate with the flexible hose 8 for connection, while maintaining the continuity of steam supply and condensate discharge of the tube core 1, dynamic and precise spacing adjustment can be realized, greatly improving the adaptability of the equipment to changes in the viscosity and particle size of different materials. At the same time, the driving gear 31 in the transmission component 3 is installed on the movable base 33 and cooperates with the driven gear 32 on the tube core 1, and can still maintain efficient and stable power transmission when the position of the tube core changes, avoiding the failure problem caused by position adjustment in the traditional structure, and ensuring the continuity, reliability and system response speed during the drying process.

[0048] In a possible implementation manner, the displacement generator is driven by a servo motor driving a ball screw. The fixed part 71 is welded to the outer wall of the tube shell 2, the moving part 72 is linked with the driving gear 31 through a slide rail, and the meshing clearance between the driving gear 31 and the driven gear 32 of the tube core 1 is dynamically compensated.

[0049] In an embodiment of the present invention, the present invention uses a servo motor to drive a ball screw as a displacement generator, achieving a high-precision and highly controllable dynamic adjustment of the die pitch; the fixing part 71 is welded to the outer wall of the tube shell 2, ensuring the rigidity and stability of the system. The moving part 72 is linked with the driving gear 31 through a slide rail, so that when the die pitch changes, the meshing clearance between the driving gear 31 and the driven gear 32 can be dynamically compensated in real time, effectively avoiding problems such as poor meshing or power transmission interruption, ensuring that the transmission system still works efficiently and stably during the adjustment process, and greatly improving the operation reliability and drying efficiency of the equipment in the dynamic adjustment state.

[0050] In a possible implementation manner, the transmission assembly 3 further includes a supporting driven wheel one 34, a supporting driven wheel two 35, and a supporting moving base 36. The supporting driven wheel one 34 is fixedly installed at one end of the die 1. The supporting driven wheel two 35 is installed on the supporting moving base 36. The supporting moving base 36 is fixedly installed on the lower surface inside the tube shell 2. The supporting moving base 36 is passively moved through a slider and a slide rail. When the displacement generator of the dynamic pitch adjustment assembly 7 works, it drives the supporting driven wheel two 35 on the supporting moving base 36 to move passively.

[0051] In an embodiment of the present invention, by adding the supporting driven wheel one 34, the supporting driven wheel two 35, and the supporting moving base 36 to the transmission assembly 3, the die 1 can obtain stable support at both ends during rotation, effectively reducing the axial displacement and vibration problems caused by dynamic pitch adjustment. The supporting moving base 36 is linked with the displacement generator through a slider and a slide rail, and can synchronously move the supporting position when the die pitch changes, avoiding die deformation, offset, or unstable rotation caused by asynchronous support, and further improving the operation stability and service life of the overall system under dynamic adjustment.

[0052] The transmission assembly 3 of the present invention enables the driving force for rotation to be continuous and unaffected by the position adjustment of the die 1. Additionally, in an embodiment of the present invention, the positions of the driving gear 31 and the supporting driven wheels in the transmission assembly 3 are both set at both ends of the die 1. During use, relevant baffles or single pieces can be flexibly set to prevent materials from entering the gears and causing rotation failures.

[0053] In a possible implementation manner, each layer of the tube shell 2 is provided with at least one air outlet 23. Each air outlet 23 is fixedly connected to the exhaust air assembly 6. The exhaust air assembly 6 adjusts the pressure in the tube shell 2 to a slightly negative pressure state. Each layer of the tube shell 2 is provided with two feed ports 21. One feed port 21 is used to connect to the material conveying device, and the other feed port 21 is used to connect to the discharge port 22 of the adjacent tube shell 2. A detachable sealing cover is provided at any discharge port 22.

[0054] In the embodiments of the present invention, by providing at least one exhaust port 23 in each layer of the shell 2 and connecting it to the exhaust assembly 6, micro-negative pressure control of the pressure inside the shell is achieved, effectively preventing steam leakage and dust dispersion, and improving the environmental cleanliness and safety during the drying process. Each layer of the shell 2 is designed with two feed ports 21, which are respectively connected to the material conveying device and the discharge port 22 of the adjacent shell, forming a flexible material flow path. At the same time, a detachable sealing cover is provided at the discharge port 22, which is convenient for maintenance, repair and emergency operation, further improving the operation stability, maintenance convenience and overall process adaptability of the equipment.

[0055] In a possible implementation manner, the steam dryer further includes a material emergency storage device. Each shell 2 is provided with two discharge ports 22. The position of one discharge port 22 corresponds to the position of the feed port 21 of the adjacent shell 2 and is fixedly connected. The other discharge port 22 is fixedly connected to the feed port 21 of the material emergency storage device. Under normal circumstances, one discharge port 22 is normally open and the other discharge port 22 is normally closed. When any shell 2 fails, all the feed ports 21 and discharge ports 22 of the faulty shell 2 are closed. One discharge port 22 of the shell 2 above the faulty shell 2 is closed and the other discharge port 22 is opened to convey the material to the material emergency storage device. The discharge port 22 of the material emergency storage device is connected to one feed port 21 of all the shells 2.

[0056] In the embodiments of the present invention, the switching of the discharge port 22 of the faulty shell 2 is realized by a pneumatic butterfly valve. The volume of the emergency storage bin is 150% of that of a single-layer shell 2, and a screw conveyor is configured at the bottom.

[0057] In the embodiments of the present invention, by providing two discharge ports 22 in each shell 2 and introducing a material emergency storage device, the present invention ensures continuous material flow during normal operation. When any shell 2 fails, all the inlet and outlet ports of the faulty section can be quickly closed, and the material path of the upper shell can be switched to introduce the material into the emergency storage device, avoiding the shutdown of the entire line due to local failures. The emergency storage device is interconnected with each layer of the shell, with high-efficient material receiving and re-conveying capabilities, greatly improving the equipment's emergency response ability to faults, production continuity and system stability, and reducing the impact of fault shutdown on the production schedule.

[0058] In a possible implementation manner, the flight 12 is coated with a super-hydrophobic coating, and a number of protrusions 121 are provided on the surface of the flight 12. An elastic member 122 is fixedly installed at the edge of the flight 12. One end of the elastic member 122 is fixedly connected to the flight 12, and a vibration generator 123 is fixedly installed at the other end of the elastic member 122. The vibration generated by the vibration generator 123 is transmitted to the flight 12 through the elastic member 122.

[0059] In the embodiment of the present invention, the design of the protrusion 121 increases the contact area between the material and the scraper 12, and the presence of the protrusion 121 makes it less likely for the material to scale and adhere, increasing the service life. In combination with the super-hydrophobic coating, the propulsion is made smoother and the drying is more uniform.

[0060] In the embodiment of the present invention, the vibration generator 123 is specifically a hard metal ball. When the distance between adjacent tube cores 1 decreases, the vibration generators 123 of adjacent tube cores 1 will collide, and the vibration generated by the collision reaches the scraper 12 through the elastic member 122, preventing the problem of increased viscous resistance caused by too small a distance.

[0061] In a possible implementation manner, each tube shell 2 is provided with an inclination component, and the inclination component controls the inclination angle between the tube shell 2 and the ground. The feed inlet 21 and the discharge outlet 22 of adjacent tube shells 2 are connected by a hose 8.

[0062] In a possible implementation manner, the hose 8 is a high-strength plastic pipeline with a sealing function, and a support skeleton is arranged in the hose 8.

[0063] In a possible implementation manner, the hose 8 is a metal corrugated hose 8. Both the steam inlet and the condensate outlet adopt metal bellows with a support skeleton, and the pre-tightening amount is 15 mm to avoid additional stress.

[0064] In a possible implementation manner, a temperature sensor and a humidity sensor are fixedly installed on the inner side surface of the tube shell 2, and a stress sensor is arranged on the tube core 1 to monitor the temperature, humidity in the tube shell 2 and the stress of the tube core 1 in real time.

[0065] In the embodiment of the present invention, a PT100 temperature sensor (range -50~300°C) and a capacitive humidity sensor (accuracy ±2%RH) are installed on the inner wall of the tube shell 2. A strain gauge type stress sensor (range 0 - 500 N·m) is surface-mounted on the tube core 1, and the data acquisition period is 100 ms.

[0066] Working process:

[0067] Taking the chemical raw material with a moisture content of 35% as an example:

[0068] Startup stage: Steam pressure gradient loading: 0 → 0.05 → 0.1 → 0.2 → 0.3 MPa (interval 5 min).

[0069] Temperature rise curve: 25°C → 85°C → 132°C → 165°C → 220°C (slope 3.2°C / min).

[0070] Tube spacing synchronous adjustment: Initial spacing 40 mm → Stable stage 32 mm (viscosity 420 cP).

[0071] Operation stage: The capacitive humidity sensor (±2%RH accuracy) monitors in real time. When the humidity of the outlet gas > 18%, the exhaust negative pressure automatically increases from -50Pa to -80Pa. When the strain gauge on the surface of the tube core 1 (range 0 - 500N·m) detects a torque fluctuation > 15%, the spacing is adjusted to start the vibration generator 123, and the collision of the metal hard balls effectively reduces the fouling rate of the pipe wall.

[0072] Fault detection: When the pressure difference of the pipe shell 2 > 15kPa is detected, the emergency system closes the valve of the faulty section within 0.3s, the discharge of the upper pipe shell 2 is switched to the material emergency storage device, and the vibration generator 123 is started synchronously to remove the blocked material.

[0073] This invention covers any substitutions, modifications, equivalent methods, and solutions made to the essence and scope of this invention. For the public to have a thorough understanding of this invention, specific details are described in detail in the preferred embodiments of this invention. However, those skilled in the art can fully understand this invention without the description of these details. Additionally, to avoid unnecessary confusion to the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0074] The above description is only the preferred embodiment of this invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of this invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of this invention.

Claims

1. A steam dryer with a function of adjusting the tube bundle spacing, characterized in that, It includes a tube core (1), a tube shell (2), a transmission component (3), a steam generation component (4), a condensate drainage component (5) and an exhaust component (6). A number of tube cores (1) are arranged in the tube shell (2), and materials are contained in the tube shell (2). The transmission component (3) provides rotational power for the tube core (1). The tube core (1) stirs the materials to uniformly heat and advance the materials. The steam generation component (4) is connected to one end of the tube core (1) to convey steam into the tube core (1). The condensate drainage component (5) is connected to the other end of the tube core (1) to discharge the liquid water formed by the condensation of steam in the tube bundle. The exhaust component (6) discharges the evaporation gas in the tube shell (2); The tube core (1) sequentially includes a metal tube (11) and a baffle (12) from the inside to the outside. The metal tube (11) is hollow. Steam enters the inside of the tube bundle through the metal tube (11), and heat is transferred to the materials through the metal tube (11). The transmission component (3) drives the metal tube (11) to rotate. The baffle (12) is movably installed on the outer surface of the metal tube (11), and the baffle (12) is fixedly connected to the transmission component (3). The baffle (12) stirs the materials during rotation to advance the materials; The steam dryer further includes a dynamic spacing adjustment component (7). The dynamic spacing adjustment component (7) is fixedly installed between the pipelines of the steam generation component (4) and the tube core (1), and between the pipelines of the condensate drainage component (5) and the tube core (1); The transmission component (3) includes a driving gear (31), a driven gear (32) and a moving base (33). The moving base (33) moves passively through a slider and a slide rail. When the displacement generator of the dynamic spacing adjustment component (7) works, it drives the driving gear (31) on the moving base (33) to move passively.

2. The steam dryer with the function of adjusting the tube bundle spacing according to claim 1, characterized in that, A number of tube shells (2) are arranged longitudinally. The advancing directions of the materials in any adjacent tube shells (2) are opposite, and the connection position between the discharge port (22) of the upper tube shell (2) and the feed port (21) of the lower tube shell (2) corresponds. The number, diameter, spacing and rotation speed of the tube cores (1) in each layer of tube shells (2) are independently set.

3. A steam dryer with a function of adjusting the tube bundle spacing according to claim 2, characterized in that, The dynamic spacing adjustment component (7) includes a fixed part (71), a moving part (72) and a displacement generator. The fixed part (71) is fixedly installed on the tube shell (2), and the position of the fixed part (71) is on the outer side surface of the tube shell (2). The moving part (72) is installed on the fixed part (71), and the position of the moving part (72) is on the inner side surface of the tube shell (2). The fixed part (71) is fixedly connected to the pipeline of the steam generation component (4) or the condensate drainage component (5). The moving part (72) is fixedly connected to the pipeline of the tube core (1); The moving part (72) is connected to the fixed part (71) through a hose (8), and the moving part (72) is connected to the fixed part (71) through a displacement generator. The displacement generator controls the moving part (72) to displace relative to the fixed part (71); The described driving gear (31) is fixedly installed on the lower surface inside the shell (2). A driven gear (32) is provided at the corresponding position on each chip (1). The driven gear (32) is fixedly installed on the outer surface of the chip (1), and the driving gear (31) is fixedly installed on the moving base (33).

4. A steam dryer with a function of adjusting the tube bundle spacing according to claim 3, characterized in that, The transmission assembly (3) further includes a supporting driven wheel one (34), a supporting driven wheel two (35), and a supporting moving base (36). The supporting driven wheel one (34) is fixedly installed at one end of the chip (1). The supporting driven wheel two (35) is installed on the supporting moving base (36). The supporting moving base (36) is fixedly installed on the lower surface inside the shell (2). The supporting moving base (36) realizes passive movement through a slider and a slide rail. When the displacement generator of the dynamic spacing adjustment assembly (7) works, it drives the supporting driven wheel two (35) on the supporting moving base (36) to perform passive movement.

5. A steam dryer with a function of adjusting the tube bundle spacing according to claim 3, characterized in that, Each layer of the shell (2) is provided with at least one air outlet (23). Each air outlet (23) is fixedly connected to the air exhaust assembly (6). The air exhaust assembly (6) adjusts the pressure in the shell (2) to a slightly negative pressure state. Two feed inlets (21) are provided in each layer of the shell (2). One feed inlet (21) is used to connect to the material conveying device, and the other feed inlet (21) is used to connect to the discharge outlet (22) of the adjacent shell (2). A detachable sealing cover is provided at any discharge outlet (22).

6. A steam dryer having a function of adjusting the tube bundle spacing according to claim 5, characterized in that, It further includes a material emergency storage device. Two discharge outlets (22) are provided in any shell (2). The position of one discharge outlet (22) corresponds to and is fixedly connected to the feed inlet (21) of the adjacent shell (2). The other discharge outlet (22) is fixedly connected to the feed inlet (21) of the material emergency storage device. Under normal circumstances, one discharge outlet (22) is normally open, and the other discharge outlet (22) is normally closed. When any shell (2) fails, all the feed inlets (21) and discharge outlets (22) of the faulty shell (2) are closed. One discharge outlet (22) of the shell (2) above the faulty shell (2) is closed, and the other discharge outlet (22) is opened to convey the material to the material emergency storage device. The discharge outlet (22) of the material emergency storage device is connected to one feed inlet (21) of all the shells (2).

7. A steam dryer with a function of adjusting the tube bundle spacing according to claim 1, characterized in that, The described agitating plate (12) is coated with a superhydrophobic coating, and a number of protrusions (121) are provided on the surface of the agitating plate (12). An elastic member (122) is fixedly installed at the edge of the agitating plate (12). One end of the elastic member (122) is fixedly connected to the agitating plate (12), and the other end of the elastic member (122) is fixedly installed with a vibration generator (123). The vibration generated by the vibration generator (123) is transmitted to the agitating plate (12) through the elastic member (122).

8. A steam dryer with a function of adjusting the tube bundle spacing according to claim 1, characterized in that, Each of the described shells (2) is installed with an inclination assembly. The inclination assembly controls the inclination angle between the shell (2) and the ground. The feed inlet (21) and the discharge outlet (22) of adjacent shells (2) are connected by a hose (8).

9. A steam dryer with a function of adjusting the tube bundle spacing according to claim 3 or 7, characterized in that, The hose (8) is a high-strength plastic pipeline with a sealing function, and a support skeleton is arranged in the hose (8).

10. A steam dryer with a function of adjusting the tube bundle spacing according to claim 1, characterized in that, A temperature sensor and a humidity sensor are fixedly installed on the inner side of the pipe shell (2), and a stress sensor is arranged on the pipe core (1) to monitor the temperature and humidity in the pipe shell (2) and the stress of the pipe core (1) in real time.

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