Steam dryer with tube bundle spacing adjusting function

Abstract

The invention relates to the technical field of dryers, in particular to a steam dryer with a tube bundle spacing adjusting function, which comprises tube cores, a tube shell, a transmission assembly, a steam generation assembly, a condensate water discharge assembly and an exhaust assembly, a plurality of tube cores are arranged in the tube shell, materials are accommodated in the tube shell, the transmission assembly provides rotation power for the tube cores, and the steam generation assembly is arranged in the tube shell. The tube core stirs materials and uniformly heats and propels the materials, the steam generation assembly is connected with one end of the tube core and conveys steam into the tube core, the condensate water discharge assembly is connected with the other end of the tube core and discharges liquid water formed by steam condensation in the tube bundle, and the exhaust assembly discharges evaporated gas in the tube shell; the drying speed can be flexibly adjusted, the device is suitable for materials with different humidity and particle sizes, the closed pipe shell is matched with negative pressure exhaust, steam leakage and dust dissipation are reduced, the moving part is driven through the displacement generator, the distance between pipe cores is adjusted in real time, material blockage is avoided, and the device is suitable for the materials with different particle sizes.

Description

Technical Field

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

[0002] As an indirect heating drying equipment, tube bundle dryer is widely used in chemical, food, feed and other industries, achieving drying through heat conduction between steam and materials. Although traditional tube bundle dryers have advantages such as compact structure and low energy consumption, their technical limitations are gradually becoming apparent in complex material processing and energy efficiency optimization. The specific problems are as follows: The existing tube bundle dryer has a fixed arrangement and spacing of tube cores, and cannot dynamically adjust drying parameters according to material characteristics (such as particle size, humidity, and thermal sensitivity). High-humidity materials require a larger heat exchange area to improve evaporation efficiency, while heat-sensitive materials require a lower tube bundle density to avoid local overheating and burning. The fixed tube bundle design of the existing technology limits the equipment's adaptability to different materials, resulting in low drying efficiency or unstable product quality.

[0003] Parameters such as the tube core speed in the prior art are usually set uniformly and cannot be independently adjusted. When the material needs to be treated differently in different drying stages (such as preheating, main drying, and cooling), fixed parameters are prone to cause energy waste or uneven drying. Summary of the invention

[0004] In order to solve the technical problem of misprocessing of special-shaped NdFeB waste, the present invention provides a steam dryer with a tube bundle spacing adjustment function.

[0005] The technical solution provided by the embodiment of the present invention is as follows: A steam dryer with a tube bundle spacing adjustment function provided by an embodiment of the present invention comprises a tube core, a tube shell, a transmission component, a steam generating component, a condensed water discharge component and an exhaust component, wherein a plurality of tube cores are arranged in the tube shell, materials are contained in the tube shell, the transmission component provides rotational power for the tube core, the tube core stirs the materials, and uniformly heats and propels the materials, the steam generating component is connected to one end of the tube core to convey steam into the tube core, the condensed water discharge component is connected to the other end of the tube core to discharge liquid water formed by condensation of steam in the tube bundle, and the exhaust component discharges evaporated gas in the tube shell; The tube core includes a metal tube and a lifting plate from the inside to the outside. The metal tube is hollow. Steam enters the tube bundle through the metal tube. Heat is transferred to the material through the metal tube. The transmission component drives the metal tube to rotate. The lifting plate is movably installed on the outer surface of the metal tube. The lifting plate is fixedly connected to the transmission component. The lifting plate stirs the material during rotation to propel the material.

[0006] Optionally, several tube shells are arranged longitudinally, the material advancement directions in any adjacent tube shells are opposite, and the connection positions of the discharge port in the upper tube shell and the feed port in the lower tube shell correspond to each other, and the number, diameter, spacing and rotation speed of the tube cores in each layer of tube shells are independently set.

[0007] Optionally, it further comprises a dynamic spacing adjustment component, wherein the dynamic spacing adjustment component is installed and fixed between the steam generating component and the pipeline of the tube core, and between the condensate discharge component and the pipeline of the tube core; The dynamic spacing adjustment component includes a fixed part, a movable part and a displacement generator, wherein the fixed part is mounted and fixed on the tube shell, and the fixed part is located on the outer side of the tube shell, the movable part is mounted on the fixed part, and the movable part is located on the inner side of the tube shell, the fixed part is connected and fixed to the pipeline of the steam generating component or the condensed water discharge component, and the movable part is connected and fixed to the pipeline of the tube core; The movable part and the fixed part are connected by a hose, and the movable part and the fixed part are connected by a displacement generator, and the displacement generator controls the movable part to move relative to the fixed part; The transmission assembly includes a driving gear, a driven gear and a mobile base. The driving gear is installed and fixed on the lower surface of the tube shell. A driven gear is provided at a corresponding position on each tube core. The driven gear is installed and fixed on the outer surface of the tube core. The driving gear is installed and fixed on the mobile base. The mobile base realizes passive movement through a slider and a slide rail. When the displacement generator of the dynamic spacing adjustment assembly works, it drives the driving gear on the mobile base to move passively.

[0008] Optionally, the transmission assembly also includes a supporting driven wheel 1, a supporting driven wheel 2 and a supporting movable base, wherein the supporting driven wheel 1 is fixedly mounted at one end of the tube core, the supporting driven wheel 2 is mounted on the supporting movable base, the supporting movable base is fixedly mounted on the lower surface inside the tube shell, and the supporting movable base realizes passive movement through a slider and a slide rail. When the displacement generator of the dynamic spacing adjustment assembly works, it drives the supporting driven wheel 2 on the supporting movable base to move passively.

[0009] Optionally, each layer of the tube shell is provided with at least one exhaust port, each exhaust port is connected and fixed to an exhaust assembly, the exhaust assembly adjusts the pressure in the tube shell to a slightly negative pressure state, and each layer of the tube shell is provided with two feed ports, one of which is used to connect to a material conveying device, and the other feed port is used to connect to a discharge port of an adjacent tube shell, and any discharge port is provided with a removable sealing cover.

[0010] Optionally, a material emergency storage device is also included, and any tube shell is provided with two discharge ports, wherein the position of one discharge port corresponds to the position of the feed port of an adjacent tube shell and is fixedly connected, and the second 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 second discharge port is normally closed. When any tube shell fails, all feed ports and discharge ports of the failed tube shell are closed, and one discharge port of the tube shell above the failed tube shell is closed, and the second discharge port is opened to transport the material to the material emergency storage device, and the discharge port of the material emergency storage device is connected to one feed port of all the tube shells.

[0011] Optionally, the copy board is coated with a super-hydrophobic coating, and a plurality of protrusions are provided on the surface of the copy board. An elastic member is fixedly mounted on the edge of the copy board, one end of the elastic member is connected and fixed to the copy board, and a vibration generator is fixedly mounted on the other end of the elastic member. The vibration generator transmits the generated vibration to the copy board through the elastic member.

[0012] Optionally, each tube shell is installed with a tilting component, which controls the inclination angle between the tube shell and the ground, and the feed ports and discharge ports of adjacent tube shells are connected by a hose.

[0013] Optionally, the hose is a high-strength plastic pipeline with a sealing function, and a supporting skeleton is provided in the hose.

[0014] Optionally, a temperature sensor and a humidity sensor are fixedly mounted on the inner side of the tube shell, and a stress sensor is arranged on the tube core to monitor the temperature and humidity in the tube shell and the stress of the tube core in real time.

[0015] The beneficial effects brought about by the technical solution provided by the embodiment of the present invention include at least: (1) The present invention realizes direct transfer of steam heat to the material through the combined design of metal tube and lifting plate. At the same time, the lifting plate rotates and stirs the material to reduce the drying blind area. The transmission component drives the tube core to rotate. Combined with the micro-negative pressure environment of the exhaust component, the drying speed can be flexibly adjusted. It is suitable for materials with different humidity and particle sizes. The closed tube shell is combined with negative pressure exhaust to reduce steam leakage and dust escape. The moving part is driven by the displacement generator to adjust the tube core spacing in real time to avoid material blockage and adapt to materials of different particle sizes. The design of the hose and the support frame ensures that the steam pipeline is reliably sealed during dynamic adjustment to reduce the risk of leakage.

[0016] (2) The dynamic spacing adjustment of the present invention enables the contact area between the tube cores to be dynamically optimized according to the viscosity of the material.

[0017] (3) The present invention provides an emergency storage device to achieve emergency switching when a fault occurs in the tube shell, thereby avoiding production interruption. In addition, the redundant design of the dual discharge ports of the present invention enables automatic switching to the emergency storage device when a fault occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A cross-sectional view of a steam dryer with a tube bundle spacing adjustment function provided by an embodiment of the present invention Figure 1 .

[0020] Figure 2 A schematic diagram of material inlet and outlet logic of a steam dryer with a tube bundle spacing adjustment function provided in an embodiment of the present invention.

[0021] Figure 3 A schematic structural diagram of a steam dryer with a tube bundle spacing adjustment function provided in an embodiment of the present invention.

[0022] Figure 4 A cross-sectional view of a steam dryer with a tube bundle spacing adjustment function provided by an embodiment of the present invention Figure 2 .

[0023] Figure 5 A schematic diagram of a tube core structure of a steam dryer with a tube bundle spacing adjustment function provided by an embodiment of the present invention Figure 1 .

[0024] Figure 6 A schematic diagram of a tube core structure of a steam dryer with a tube bundle spacing adjustment function provided by an embodiment of the present invention Figure 2 .

[0025] Figure 7 A partial cross-sectional structural schematic diagram of a steam dryer with a tube bundle spacing adjustment function provided in an embodiment of the present invention.

[0026] Figure markings: 1-tube core, 11-metal tube, 12-copying plate, 121-protrusion, 122-elastic member, 123-vibration generator, 2-tube shell, 21-feed port, 22-discharge port, 23-exhaust port, 3-transmission assembly, 31-driving gear, 32-driven gear, 33-movable base, 34-support driven wheel one, 35-support driven wheel two, 36-support movable base, 4-steam generating assembly, 5-condensate discharge assembly, 6-exhaust assembly, 7-dynamic spacing adjustment assembly, 71-fixed part, 72-movable part, 8-hose. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is described below in conjunction with the accompanying drawings. It is also noted that, in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0028] like Figures 1 to 7 As shown, an embodiment of the present invention provides a steam dryer with a tube bundle spacing adjustment function, including a tube core 1, a tube shell 2, a transmission component 3, a steam generating component 4, a condensed water discharge component 5 and an exhaust component 6, wherein a plurality of tube cores 1 are arranged in the tube shell 2, and the tube shell 2 contains materials. The transmission component 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 component 4 is connected to one end of the tube core 1 to transport steam into the tube core 1. The condensed water discharge component 5 is connected to the other end of the tube core 1 to discharge liquid water formed by condensation of steam in the tube bundle, and the exhaust component 6 discharges the evaporated gas in the tube shell 2.

[0029] The tube core 1 includes a metal tube 11 and a lifting plate 12 from the inside to the outside. The metal tube 11 is hollow. Steam enters the tube bundle through the metal tube 11. Heat is transferred to the material through the metal tube 11. The transmission component 3 drives the metal tube 11 to rotate. The lifting plate 12 is movably installed on the outer surface of the metal tube 11. The lifting plate 12 is fixedly connected to the transmission component 3. The lifting plate 12 stirs the material during the rotation to propel the material.

[0030] In the embodiment of the present invention, the steam generating assembly 4 adopts a two-stage superheating system (the first stage is 0.8MPa / 165°C, the second stage is 0.6MPa / 220°C), the steam enters the metal pipe 11 through a rotary joint (web page 2 specification), and the condensed water is discharged through a cyclone separator + double steam trap.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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 .

[0037] The dynamic spacing adjustment component 7 includes a fixed part 71, a movable part 72 and a displacement generator. The fixed part 71 is installed and fixed on the tube shell 2, and the position of the fixed part 71 is located on the outer side of the tube shell 2. The movable part 72 is installed on the fixed part 71, and the position of the movable part 72 is located on the inner side of the tube shell 2. The fixed part 71 is connected and fixed to the pipeline of the steam generating component 4 or the condensate discharge component 5, and the movable part 72 is connected and fixed to the pipeline of the tube core 1.

[0038] The movable part 72 is connected to the fixed part 71 via a hose 8 , and the movable part 72 is connected to the fixed part 71 via a displacement generator, which controls the movable part 72 to move relative to the fixed part 71 .

[0039] The transmission assembly 3 includes a driving gear 31, a driven gear 32 and a movable base 33. The driving gear 31 is fixedly mounted on the lower surface of the tube shell 2. A driven gear 32 is provided at a corresponding position on each tube core 1. The driven gear 32 is fixedly mounted on the outer surface of the tube core 1. The driving gear 31 is fixedly mounted on the movable base 33. The movable base 33 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 driving gear 31 on the movable base 33 to move passively.

[0040] In the embodiment of the present invention, by setting a dynamic spacing adjustment component 7 between the steam generating component 4 and the condensate discharge component 5 pipeline, and using a fixed part 71 and a movable part 72 to cooperate with a hose 8 to connect, the tube core 1 can achieve dynamic and precise spacing adjustment while maintaining the continuity of steam supply and condensate discharge, which greatly improves the equipment's adaptability to changes in viscosity and particle size of different materials. At the same time, the driving gear 31 in the transmission component 3 is installed on a movable base 33, and cooperates with the driven gear 32 on the tube core 1, so that when the position of the tube core changes, it can still maintain efficient and stable power transmission, avoiding the failure problem of the traditional structure caused by position adjustment, and ensuring the continuity, reliability and system response speed during the drying process.

[0041] In a possible implementation, 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 movable part 72 is linked to 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.

[0042] In the embodiment of the present invention, the present invention realizes high-precision and highly controllable dynamic adjustment of the tube core spacing by adopting a servo motor to drive a ball screw as a displacement generator; the fixed part 71 is welded to the outer wall of the tube shell 2 to ensure the rigidity and stability of the system, and the movable part 72 is linked with the driving gear 31 through a slide rail, so that when the tube core spacing changes, the meshing clearance between the driving gear 31 and the driven gear 32 can be dynamically compensated in real time, effectively avoiding the problems of poor meshing or power transmission interruption, ensuring that the transmission system still works efficiently and stably during the adjustment process, and greatly improving the operating reliability and drying efficiency of the equipment under the dynamic adjustment state.

[0043] In a possible embodiment, the transmission component 3 also includes a support driven wheel 1 34, a support driven wheel 2 35 and a support movable base 36. The support driven wheel 1 34 is installed and fixed at one end of the tube core 1, the support driven wheel 2 35 is installed on the support movable base 36, and the support movable base 36 is installed and fixed on the lower surface of the tube shell 2. The support movable base 36 realizes passive movement through a slider and a slide rail. When the displacement generator of the dynamic spacing adjustment component 7 is working, it drives the support driven wheel 2 35 on the support movable base 36 to move passively.

[0044] In the embodiment of the present invention, by adding a support driven wheel 1 34, a support driven wheel 2 35 and a support movable base 36 in the transmission assembly 3, the tube core 1 can obtain stable support at both ends during the rotation process, effectively reducing the axial displacement and vibration problems caused by dynamic spacing adjustment. The support movable base 36 is linked with the displacement generator through a slider and a slide rail, and can synchronously move the support position when the tube core spacing changes, avoiding deformation, offset or unstable rotation of the tube core caused by asynchronous support, and further improving the operation stability and service life of the overall system under dynamic adjustment.

[0045] The transmission assembly 3 of the present invention allows the rotational driving force to be continuous and not affected by the position adjustment of the tube core 1. In addition, in an embodiment of the present invention, the driving gear 31 in the transmission assembly 3 and the position of the supporting driven wheel are both set at both ends of the tube core 1. When in use, relevant baffles or single pieces can be flexibly set to prevent materials from entering the gears and causing rotation failures.

[0046] In a possible embodiment, each layer of the tube shell 2 is provided with at least one exhaust port 23, each exhaust port 23 is connected and fixed to the exhaust component 6, the exhaust component 6 adjusts the pressure in the tube shell 2 to a slightly negative pressure state, and each layer of the tube shell 2 is provided with two feed ports 21, one of the feed ports 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, and any discharge port 22 is provided with a detachable sealing cover.

[0047] In the embodiment of the present invention, by providing at least one exhaust port 23 in each layer of the tube shell 2 and connecting it to the exhaust assembly 6, micro-negative pressure control of the internal pressure of the tube shell is achieved, effectively preventing steam leakage and dust escape, and improving the environmental cleanliness and safety of the drying process. Each layer of the tube shell 2 is designed with two feed ports 21, which are respectively connected to the material conveying device and the adjacent tube shell outlet 22 to form a flexible material flow path. At the same time, a detachable sealing cover is provided at the outlet 22 to facilitate maintenance, overhaul and emergency operation, further improving the operating stability, maintenance convenience and overall process adaptability of the equipment.

[0048] In a possible embodiment, the steam dryer also includes a material emergency storage device, and any tube shell 2 is provided with two discharge ports 22, wherein the position of one discharge port 22 corresponds to the position of the feed port 21 of the adjacent tube shell 2 and is fixedly connected, and the second discharge port 22 is fixedly connected to the feed port 21 of the material emergency storage device. Under normal circumstances, the first discharge port 22 is normally open, and the second discharge port 22 is normally closed. When any tube shell 2 fails, all the feed ports 21 and discharge ports 22 of the failed tube shell 2 are closed, and one discharge port 22 of the tube shell 2 above the failed tube shell 2 is closed, and the second discharge port 22 is opened to transport the material to the material emergency storage device, and the discharge port 22 of the material emergency storage device is connected to one feed port 21 of all the tube shells 2.

[0049] In the embodiment of the present invention, the outlet 22 of the faulty tube shell 2 is switched by a pneumatic butterfly valve, the volume of the emergency storage bin is 150% of the single-layer tube shell 2, and a screw conveyor is arranged at the bottom.

[0050] In the embodiment of the present invention, by setting two discharge ports 22 in each tube shell 2 and introducing a material emergency storage device, the present invention ensures the continuity of material flow during normal operation. When any tube shell 2 fails, all inlet and outlet ports of the failed section can be quickly closed, and the material path of the upper tube shell can be switched to introduce the material into the emergency storage device to avoid the whole line shutdown due to local failure. The emergency storage device is interconnected with each layer of tube shells and has efficient material receiving and re-transporting capabilities, which greatly improves the equipment's emergency response capability, production continuity and system stability, and reduces the impact of failure shutdown on production progress.

[0051] In a possible implementation, the copy board 12 is coated with a super-hydrophobic coating, and a plurality of protrusions 121 are provided on the surface of the copy board 12. An elastic member 122 is fixedly installed on the edge of the copy board 12. One end of the elastic member 122 is connected and fixed to the copy board 12. A vibration generator 123 is fixedly installed on the other end of the elastic member 122. The vibration generator 123 transmits the generated vibration to the copy board 12 through the elastic member 122.

[0052] In the embodiment of the present invention, the design of the protrusion 121 increases the contact area between the material and the lifting plate 12, and the presence of the protrusion 121 makes it less likely for the material to accumulate scale and adhere, thereby increasing the service life. Combined with the super-hydrophobic coating, the propulsion is smoother and the drying is more uniform.

[0053] In the embodiment of the present invention, the vibration generator 123 is specifically a small hard metal ball. When the distance between adjacent tube cores 1 decreases, the vibration generators 123 of adjacent tube cores 1 will collide. The vibration generated by the collision reaches the copy board 12 along the elastic member 122, thereby preventing the problem of increased viscous resistance caused by too small a distance.

[0054] In a possible implementation, each tube shell 2 is installed with a tilting assembly, which controls the inclination angle between the tube shell 2 and the ground, and the feed ports 21 and the discharge ports 22 of adjacent tube shells 2 are connected by a hose 8 .

[0055] In a possible implementation manner, the hose 8 is a high-strength plastic pipeline with a sealing function, and a supporting skeleton is provided in the hose 8 .

[0056] In a possible implementation, the hose 8 is a metal corrugated hose 8. The steam inlet and the condensate outlet both use metal corrugated pipes with a support frame, and the pre-tightening amount is 15 mm to avoid additional stress.

[0057] In a possible implementation, a temperature sensor and a humidity sensor are fixedly mounted on the inner side of the tube shell 2 , and a stress sensor is provided on the tube core 1 to monitor the temperature and humidity in the tube shell 2 and the stress of the tube core 1 in real time.

[0058] In the embodiment of the present invention, a PT100 temperature sensor (range -50~300℃) and a capacitive humidity sensor (accuracy ±2%RH) are installed on the inner wall of the tube shell 2. A strain gauge stress sensor (range 0-500N·m) is mounted on the surface of the tube core 1, and the data acquisition cycle is 100ms.

[0059] Working process: Take the treatment of chemical raw materials with a moisture content of 35% as an example: Start-up phase: Steam pressure gradient loading: 0→0.05→0.1→0.2→0.3MPa (5min interval).

[0060] Temperature climbing curve: 25℃→85℃→132℃→165℃→220℃ (slope 3.2℃ / min).

[0061] Synchronous adjustment of tube spacing: initial spacing 40mm → 32mm in stable stage (viscosity 420cP).

[0062] Operation phase: Capacitive humidity sensor (±2%RH accuracy) real-time monitoring, when the outlet gas humidity>18%, the exhaust negative pressure automatically increases from -50Pa to -80Pa. When the strain gauge (range 0-500N·m) on the surface of tube core 1 detects torque fluctuation>15%, the spacing is adjusted to start the vibration generator 123, and the collision of the metal hard ball effectively reduces the scaling rate of the tube wall.

[0063] Fault detection: When it is detected that the pressure difference of tube shell 2 is greater than 15kPa, the emergency system closes the fault section valve within 0.3s, the discharge of the upper tube shell 2 is switched to the material emergency storage device, and the vibration generator 123 is started synchronously to clear the blocked material.

[0064] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0065] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A steam dryer with a tube bundle spacing adjustment function, characterized in that: The invention comprises a tube core (1), a tube shell (2), a transmission component (3), a steam generating component (4), a condensed water discharge component (5) and an exhaust component (6), wherein a plurality of tube cores (1) are arranged in the tube shell (2), the tube shell (2) contains materials, the transmission component (3) provides rotational power for the tube core (1), the tube core (1) stirs the materials, and evenly heats and propels the materials, the steam generating component (4) is connected to one end of the tube core (1) and conveys steam to the tube core (1), the condensed water discharge component (5) is connected to the other end of the tube core (1) and discharges liquid water formed by condensation of steam in the tube bundle, and the exhaust component (6) discharges evaporated gas in the tube shell (2); The tube core (1) comprises, from the inside to the outside, a metal tube (11) and a lifting plate (12), the metal tube (11) being hollow, steam entering the tube bundle through the metal tube (11), heat being transferred to the material through the metal tube (11), the transmission component (3) driving the metal tube (11) to rotate, the lifting plate (12) being movably mounted on the outer surface of the metal tube (11), the lifting plate (12) being fixedly connected to the transmission component (3), and the lifting plate (12) stirring the material during the rotation process to propel the material; The steam dryer further comprises a dynamic spacing adjustment component (7), wherein 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); The transmission assembly (3) comprises a driving gear (31), a driven gear (32) and a movable base (33); the movable base (33) is passively moved by means of a slider and a slide rail; when the displacement generator of the dynamic spacing adjustment assembly (7) is in operation, the driving gear (31) on the movable base (33) is driven to move passively.

2. The steam dryer with tube bundle spacing adjustment function according to claim 1, characterized in that: A plurality of tube shells (2) are arranged longitudinally, the material advancing directions in any adjacent tube shells (2) are opposite, and the connection positions of the discharge port (22) of the upper tube shell (2) and the feed port (21) of 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 shells (2) are independently set.

3. The steam dryer with tube bundle spacing adjustment function according to claim 2, characterized in that: The dynamic spacing adjustment component (7) comprises a fixed portion (71), a movable portion (72) and a displacement generator, wherein the fixed portion (71) is mounted and fixed on the tube shell (2), the fixed portion (71) is located on the outer side of the tube shell (2), the movable portion (72) is mounted on the fixed portion (71), the movable portion (72) is located on the inner side of the tube shell (2), the fixed portion (71) is connected and fixed to a pipeline of a steam generating component (4) or a condensate discharge component (5), and the movable portion (72) is connected and fixed to a pipeline of a tube core (1); The movable part (72) and the fixed part (71) are connected via a hose (8), and the movable part (72) and the fixed part (71) are connected via a displacement generator, and the displacement generator controls the movable part (72) to move relative to the fixed part (71); The driving gear (31) is mounted and fixed on the lower surface of the tube shell (2); a driven gear (32) is provided at a corresponding position on each tube core (1); the driven gear (32) is mounted and fixed on the outer surface of the tube core (1); and the driving gear (31) is mounted and fixed on the movable base (33).

4. The steam dryer with tube bundle spacing adjustment function according to claim 3, characterized in that: The transmission assembly (3) further comprises a supporting driven wheel 1 (34), a supporting driven wheel 2 (35) and a supporting movable base (36), wherein the supporting driven wheel 1 (34) is fixedly mounted on one end of the tube core (1), the supporting driven wheel 2 (35) is mounted on the supporting movable base (36), and the supporting movable base (36) is fixedly mounted on the lower surface of the tube shell (2), and the supporting movable base (36) is passively moved by means of a slider and a slide rail, and when the displacement generator of the dynamic spacing adjustment assembly (7) is in operation, the supporting driven wheel 2 (35) on the supporting movable base (36) is driven to passively move.

5. The steam dryer with tube bundle spacing adjustment function according to claim 3, characterized in that: Each layer of the tube shell (2) is provided with at least one exhaust port (23), each exhaust port (23) is connected and fixed to an exhaust assembly (6), and the exhaust 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 of which is used to be connected to a material conveying device, and the other feed port (21) is used to be connected to a discharge port (22) of an adjacent tube shell (2), and any discharge port (22) is provided with a detachable sealing cover.

6. The steam dryer with tube bundle spacing adjustment function according to claim 5, characterized in that: It also includes a material emergency storage device, wherein any tube shell (2) is provided with two discharge ports (22), one of which is located corresponding to the position of the feed port (21) of the adjacent tube shell (2) and is connected and fixed, and the second discharge port (22) is connected and fixed to the feed port (21) of the material emergency storage device. Under normal circumstances, the first discharge port (22) is always open, and the second discharge port (22) is always closed. When any tube shell (2) fails, all the feed ports (21) and discharge ports (22) of the failed tube shell (2) are closed, and one of the discharge ports (22) of the tube shell (2) above the failed tube shell (2) is closed, and the second discharge port (22) is opened, so that the material is transported to the material emergency storage device, and the discharge port (22) of the material emergency storage device is connected to one of the feed ports (21) of all the tube shells (2).

7. The steam dryer with tube bundle spacing adjustment function according to claim 1, characterized in that: The lifting board (12) is coated with a super-hydrophobic coating, and a plurality of protrusions (121) are provided on the surface of the lifting board (12). An elastic member (122) is fixedly mounted on the edge of the lifting board (12), one end of the elastic member (122) is connected and fixed to the lifting board (12), and a vibration generator (123) is fixedly mounted on the other end of the elastic member (122). The vibration generated by the vibration generator (123) is transmitted to the lifting board (12) through the elastic member (122).

8. The steam dryer with tube bundle spacing adjustment function according to claim 1, characterized in that: Each tube shell (2) is equipped with a tilting assembly, which controls the tilting angle between the tube shell (2) and the ground. The feed ports (21) and the discharge ports (22) of adjacent tube shells (2) are connected via a hose (8).

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

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

Images