A continuous flash air flow drying chamber and drying system thereof

Abstract

The application provides a continuous instantaneous airflow drying cavity and a drying system thereof, and relates to an airflow drying device, which comprises a loop-shaped closed circulation cavity composed of two groups of C-shaped pipes, namely C-shaped pipe one and C-shaped pipe two, which are installed in butt joint mode, the upper side wall of the cavity top of the C-shaped pipe one is provided with a feeding port, the lower side wall of the cavity top of the C-shaped pipe two is provided with a discharging port, and a group of drying chambers are arranged on the side of the C-shaped pipe one away from the C-shaped pipe two, the chamber bottom of the drying chamber is provided with a hot source airflow inlet, the joint part of the C-shaped pipe one is provided with a through port, a group of nozzle base plates are detachably and sealingly installed at the through port, a plurality of groups of nozzles are formed in the nozzle base plate, the nozzles are obliquely and downwardly penetrated into the circulation cavity, the oblique angle of the upper layer of the nozzles is greater than that of the lower layer of the nozzles, the product entering the device can achieve the effect of instantaneous drying, the circulation structure of the high-temperature gas is also adopted, the installation area of the device is small, the structure is simple, and the subsequent maintenance and repair are facilitated.

Description

Technical Field

[0001] This invention relates to an airflow drying device, and more particularly to a continuous instantaneous airflow drying chamber and its drying system. Background Technology

[0002] When suspensions or pastes or powders of products such as polyurethane resins, aluminum hydroxide, diatomaceous earth, and grains need to be dried and recycled in micro-powder form, a high-temperature jet of air is generally used to achieve instantaneous drying. That is, under the action of high-pressure hot air, the dried product is dispersed into single particles, achieving the drying effect instantly.

[0003] For example, the patent for an airflow drying device for potato starch processing (publication number CN218915728U) and the patent for an airflow drying system for manganese dioxide (publication number CN217442097U) both use airflow drying. However, the construction of such drying systems has the disadvantages of low drying efficiency and large equipment footprint. Summary of the Invention

[0004] To address the aforementioned technical problems, the present invention aims to provide a continuous instantaneous airflow drying chamber and its drying system, which can achieve instantaneous drying of incoming products. Furthermore, the high-temperature gas circulation structure results in a smaller installation area, a simpler structure, and easier subsequent maintenance and repair. In practical applications, the high-temperature airflow disperses and dries the incoming products within the drying chamber, and the drying time is extremely short (around 0.7 seconds).

[0005] This invention provides the following technical solution:

[0006] A continuous instantaneous airflow drying chamber and its drying system include a U-shaped closed circulation chamber composed of two sets of C-shaped tubes, C-shaped tube 1 and C-shaped tube 2, installed end-to-end. The end-to-end installation of C-shaped tubes 1 and 2 facilitates later maintenance. The upper side wall of the top of C-shaped tube 1 is provided with a feed inlet for receiving the incoming material, and the lower side wall of C-shaped tube 2 is provided with a discharge outlet for receiving the outgoing material. In this configuration, the raw material is fed from the top of C-shaped tube 1, and after one cycle, the dried powder material is discharged from the discharge outlet of C-shaped tube 2 along with the airflow. A small amount of undried material can continue to circulate with the airflow into C-shaped tube one and circulate again with the newly introduced raw material to achieve thorough dispersion and drying. A drying chamber is also located on the side of C-shaped tube one away from C-shaped tube two. The bottom of the drying chamber has a heat source airflow inlet, and a through-hole is provided at its connection with C-shaped tube one. A set of nozzle base plates is detachably and sealed at the through-hole. Multiple nozzles are formed on the nozzle base plates, and the nozzles are inclined downwards into the circulation chamber, with the inclination angle of the upper nozzle being greater than that of the lower nozzle.

[0007] Therefore, under the premise of airflow guiding by the fan, the high-temperature airflow can enter the drying chamber through the heat source airflow inlet for buffering, so that the airflow can enter synchronously from multiple groups of nozzles. Since the nozzles are inclined downward through the circulation cavity, the airflow can be guided in a circulation manner. The raw materials entering from the feeding port flow along the circulation cavity under the guidance, and are dispersed and dried under the action of the airflow.

[0008] Since the inclination angles of the synchronously entering airflows are different, the raw materials can be more easily dispersed by collision when flowing with the airflows, so that dry particles with smoother surfaces can be obtained.

[0009] Since the nozzles are arranged on the nozzle base plate, and the nozzle base plate is detachably installed at the through port to realize the isolation between the drying chamber and the C-shaped tube, the nozzle base plate can be replaced to quickly adjust and maintain.

[0010] Preferably, a reinforcing support block is arranged outside the through port on the wall of the C-shaped tube, a connecting column is arranged on the reinforcing support block, the edge of the nozzle base plate is installed through the connecting column, and the nozzle base plate is tightly packaged on the reinforcing support block by a nut. A maintenance opening opposite to the through port is further arranged on the drying chamber. Therefore, when the nozzle base plate needs to be replaced, the nozzle base plate can be quickly disassembled by only opening the maintenance opening and loosening the nut, which is more convenient.

[0011] Preferably, the top and bottom of the reinforcing support block extend to the back-to-back corners of the circulation cavity. Therefore, the reinforcing support block can not only strengthen the structure of the through port to avoid deformation of the through port, but also serve as a corner collision wall of the raw materials to improve the stability and service life of the overall structure.

[0012] A drying system of a continuous instantaneous airflow drying cavity, characterized in that, based on the above-mentioned continuous instantaneous airflow drying cavity, further comprising a fan one, a series filter and an electric heater installed in sequence at the heat source airflow inlet, and a cyclone separator, a dust collector and a fan two connected in sequence at the discharge port. A material cylinder, a peristaltic pump and a cross valve connected in sequence are further connected at the feeding port. The airflow sucked by the fan one is filtered by the series filter and then enters the electric heater to be heated to form the heat source airflow entering the drying chamber. The raw materials in the material cylinder are driven by the peristaltic pump to enter the feeding port when the cross valve is opened. The raw materials in the circulation cavity are dispersed and dried under the action of the heat source airflow. The dried fine powder is discharged at the discharge port and enters the cyclone separator under the action of the airflow to separate the gas and the dry solid. The airflow separated by the cyclone separator is further collected by the series dust collector, and the airflow discharged by the dust collector is discharged by the fan two.

[0013] Preferably, the nozzle base plate is further embedded with a first ball arranged at the nozzle outlet, the first ball is provided with a through hole matched with the nozzle outlet, and the outer wall of the first ball is symmetrically fixed with two groups of arc-shaped guide blocks, the arc-shaped guide blocks are guided and installed in arc-shaped guide grooves, at least one group of the arc-shaped guide blocks is provided with an arc-shaped rack, the nozzle base plate is adaptively installed with a gear shaft for engaging and driving the arc-shaped rack, the gear shaft is arranged along the transverse direction, and when the gear shaft rotates, the size of the through hole matched with the nozzle outlet is adjusted, and the air intake into the circulating cavity is adjusted.

[0014] Preferably, the nozzle base plate is further embedded with a second ball arranged at the nozzle outlet, the second ball is provided with a through hole, the air inlet end of the through hole is always communicated with the air inlet end of the nozzle outlet, and the air outlet end of the through hole is always communicated with the air outlet end of the nozzle outlet, the outer wall of the second ball is symmetrically fixed with two groups of arc-shaped guide blocks, the arc-shaped guide blocks are guided and installed in arc-shaped guide grooves, at least one group of the arc-shaped guide blocks is provided with an arc-shaped rack, the nozzle base plate is adaptively installed with a gear shaft for engaging and driving the arc-shaped rack, the gear shaft is arranged along the longitudinal direction, and when the gear shaft rotates, the horizontal direction of the air outlet end of the through hole is adjusted, at this time, since the gear shaft rotates, the air inlet end and the air outlet end of the through hole can always be communicated with the nozzle outlet, therefore, the transverse size of the nozzle outlet is larger than the hole diameter of the through hole, the gear shaft can drive the second ball to swing transversely, that is, the air outlet end adjustment in the horizontal direction is performed, but the inclination angle of the downward inclination is always unchanged, and in turn, the air flow in the circulating cavity can always be kept as a circumferential circulating guide air flow, and the air flow in the circulating cavity can be more easily collided with each other and the side wall, so that the dispersion and drying effects are achieved.

[0015] Preferably, the gear shaft arranged along the longitudinal direction is connected in a head-to-tail manner, and a group of micro motors are connected to the top end of the gear shaft, the micro motors are used for synchronously driving the gear shaft arranged along the longitudinal direction to reciprocatingly rotate, and in turn, the gear shaft arranged along the longitudinal direction is synchronously adjusted to swing.

[0016] Preferably, the size of the air inlet end and the air outlet end of the nozzle outlet is larger than the hole diameter of the through hole, when the gear shaft rotates, the air inlet end and the air outlet end of the nozzle outlet are always communicated with the corresponding air inlet end and the air outlet end of the through hole, therefore, when the gear shaft rotates to adjust the first ball, the air intake cannot be adjusted, but the inclination angle of the longitudinal air intake can be adjusted, therefore, when the inclination angle of the air intake needs to be adjusted, the nozzle base plate does not need to be disassembled, and only the angle of the gear shaft needs to be rotated, which is time-saving and labor-saving.

[0017] The beneficial effects of the present application are as follows:

[0018] 1. Under the premise that the first fan and the second fan of the present invention provide airflow conveying guidance, the high temperature airflow can first enter the drying chamber for buffering through the heat source airflow inlet, and then the airflow can be simultaneously entered into the circulation cavity from multiple sets of nozzles. Since the nozzles are inclined downward into the circulation cavity, a circulation guide can be given to the airflow. The raw material entering from the feed inlet flows along the U-shaped circulation cavity under this guide, and is collided, dispersed and dried under the action of the airflow.

[0019] 2. Since the angles of the airflow entering at the same time are also different, the raw materials can be more easily collided and dispersed when flowing with the airflow, thereby obtaining dry particles with a smoother surface.

[0020] 3. Since the nozzle is set on the nozzle base plate, and the nozzle base plate is detachably installed at the through-hole to achieve isolation between the drying chamber and the C-shaped tube, the purpose of quick adjustment and maintenance can be achieved by replacing the nozzle base plate. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a front cross-sectional view of the continuous instantaneous airflow drying chamber in this invention;

[0023] Figure 2 This is a schematic diagram of the drying system in this invention;

[0024] Figure 3 This is a front cross-sectional view of the continuous instantaneous airflow drying chamber in Example 2;

[0025] Figure 4 yes Figure 3 A partial enlarged view of the nozzle substrate;

[0026] Figure 5 This is a front cross-sectional view of the continuous instantaneous airflow drying chamber in Example 3;

[0027] Figure 6 yes Figure 5 A partial enlarged view of the nozzle substrate;

[0028] Figure 7 This is a front cross-sectional view of the continuous instantaneous airflow drying chamber in Example 4;

[0029] Figure 8 yes Figure 7 A partial enlarged view of the nozzle substrate;

[0030] Figure 9 This is a diagram of the micro-powder particles after drying using existing airflow drying equipment;

[0031] Figure 10 This is a diagram of the micro-powder particles after drying using the equipment of this invention;

[0032] Markings in the diagram:

[0033] 1. C-shaped tube one; 2. C-shaped tube two; 3. Feed inlet; 4. Discharge outlet; 5. Drying chamber; 6. Heat source airflow inlet; 7. Nozzle base plate; 8. Nozzle; 9. Reinforcing support block; 10. Inspection port; 11. Fan one; 12. Series filter; 13. Electric heater; 14. Cyclone separator; 15. Dust collector; 16. Fan two; 17. Material cylinder; 18. Peristaltic pump; 19. Cross valve; 20. Ball bearing one; 21. Through hole one; 22. Arc-shaped guide block one; 23. Arc-shaped guide groove one; 24. Gear shaft one; 25. Ball bearing two; 26. Arc-shaped rack two; 27. Gear shaft two; 28. Micro motor. Detailed Implementation

[0034] Example 1

[0035] like Figure 1 The continuous instantaneous airflow drying chamber shown in this embodiment includes a U-shaped closed circulation chamber composed of two sets of C-shaped tubes 1 and 2 installed together. The installation of C-shaped tubes 1 and 2 together facilitates later maintenance. The upper side wall of the top of C-shaped tube 1 is provided with a feed port 3 for receiving the feed, and the lower side wall of C-shaped tube 2 is provided with a discharge port 4 for receiving the discharge. At this time, the raw material is fed from the top of C-shaped tube 1. After one cycle, the dried powder material can be discharged together with the airflow through the discharge port 4 of C-shaped tube 2. A small amount of undried material can continue to circulate with the airflow into C-shaped tube 1 and circulate again with the newly introduced raw material to achieve full dispersion and drying. A drying chamber 5 is also provided on the side of C-shaped tube 1 away from C-shaped tube 2. The bottom of the drying chamber 5 is provided with a heat source airflow inlet 6, and a through-hole is provided at the junction of it and C-shaped tube 1. A set of nozzle base plates 7 are detachably sealed and installed at the through-hole. Multiple sets of nozzles 8 are opened on the nozzle base plate 7. The nozzles 8 are inclined downward into the circulation chamber, and the inclination angle of the upper nozzle 8 is greater than that of the lower nozzle 8.

[0036] A reinforcing support block 9 is provided outside the through-hole on the wall of the C-shaped tube 1. A connecting post is provided on the reinforcing support block 9. The edge of the nozzle substrate 7 passes through the connecting post and is pressed and sealed on the reinforcing support block 9 by a nut. The drying chamber 5 is also provided with an inspection port 10 opposite to the through-hole. Therefore, when it is necessary to replace the nozzle substrate 7, it is only necessary to open the inspection port 10 and loosen the nut to quickly disassemble the nozzle substrate 7, which is quick and convenient.

[0037] The top and bottom of the reinforcing block 9 extend to the loop-shaped corners of the circulating cavity, so that the reinforcing block 9 can not only reinforce the structure of the through hole to avoid deformation of the through hole, but also can be used as a corner collision wall to improve the stability and service life of the overall structure.

[0038] As Figure 2 shown in a continuous instantaneous airflow drying cavity drying system, based on the above-mentioned continuous instantaneous airflow drying cavity, further comprising a fan 11, a series filter 12 and an electric heater 13 installed in series at the heat source airflow inlet 6, and a cyclone separator 14, a dust collector 15 and a fan 16 connected in series at the discharge port 4, and a material cylinder 17, a peristaltic pump 18 and a cross valve 19 connected in series at the feeding port 3, the airflow sucked by the fan 11 enters the electric heater 13 after being filtered by the series filter 12 to form a heat source airflow into the drying chamber 5, the raw material in the material cylinder 17 is driven by the peristaltic pump 18 to enter the feeding port 3 after the cross valve 19 is opened, and the raw material in the circulating cavity is dispersed and dried under the action of the heat source airflow, and the dried fine powder is discharged at the discharge port 4 and enters the cyclone separator 14 under the action of airflow conveying to separate the gas and dry solid, and the airflow separated by the cyclone separator 14 continues to pass through the series dust collector 15 to collect the last fine powder, and the airflow discharged by the dust collector 15 is discharged by the fan 16.

[0039] Example 2

[0040] As Figures 3-4 shown, a continuous instantaneous airflow drying cavity drying system is based on the further limitation of example 1, in this embodiment, the nozzle base plate 7 is also embedded with a ball 20 spaced apart at the nozzle 8, the ball 20 is provided with a through hole 21 matched with the nozzle 8, and the outer wall of the ball 20 is also fixed with two groups of arc-shaped guide blocks 22, the arc-shaped guide blocks 22 are guided and installed in the arc-shaped guide groove 23, at least one group of arc-shaped guide blocks 22 is provided with an arc-shaped rack 1, the nozzle base plate 7 is connected with a gear shaft 24 for engaging transmission with the arc-shaped rack 1, the gear shaft 24 is provided along the transverse direction, when it rotates, it is used to adjust the size of the through hole matched with the nozzle 8, and then adjust the air intake into the circulating cavity.

[0041] Example 3

[0042] As Figures 4-5As shown, a drying system for a continuous instantaneous airflow drying chamber is a further limitation based on Embodiment 1. In this embodiment, a second set of ball bearings 25 spaced at the nozzle 8 is embedded in the nozzle substrate 7. A second through hole is provided in the ball bearing 25. The air inlet end of the second through hole is always connected to the air inlet end of the nozzle 8, and its air outlet end is always connected to the air outlet end of the nozzle 8. Two sets of arc-shaped guide blocks 2 are symmetrically fixed on the outer wall of the ball bearing 25. The arc-shaped guide blocks 2 are guided and installed in the arc-shaped guide groove 2. At least one set of arc-shaped guide blocks 2 has an arc-shaped rack 26 on its surface. A gear shaft 27 for meshing and driving with the arc-shaped rack 26 is transferred and installed in the nozzle substrate 7. The gear shaft 27 is arranged to extend longitudinally. When it rotates... When the air outlet of the through hole is adjusted, the horizontal direction of the airflow injected into the circulation chamber is adjusted. At this time, since the air inlet and outlet of the through hole can always penetrate the nozzle 8 when the gear shaft 27 rotates, the lateral dimension of the nozzle 8 is larger than the diameter of the through hole. When the gear shaft 27 rotates, it can drive the ball 25 to swing laterally, that is, adjust the air outlet in the horizontal direction, but the downward tilt angle remains unchanged. This ensures that the airflow in the circulation chamber can not only maintain a circumferential circulating guide airflow, but also makes it easier for the airflow in the circulation chamber to collide with each other and with the side wall, thereby achieving the effect of dispersion and drying.

[0043] The gear shaft 27, which is arranged longitudinally, is connected end to end, and a set of micro motors 28 are connected to its top. The micro motors 28 are used to synchronously drive the gear shaft 27, which is arranged longitudinally, to reciprocate and rotate, thereby synchronously adjusting the multiple sets of balls arranged longitudinally to swing synchronously.

[0044] Example 4

[0045] like Figures 6-7 As shown, a drying system for a continuous instantaneous airflow drying chamber is a further limitation based on Embodiment 2. In this embodiment, the size of the air inlet and outlet of the nozzle 8 is larger than the diameter of the through hole. When the gear shaft 24 rotates, the air inlet and outlet of the nozzle 8 are always connected to the air inlet and outlet corresponding to the through hole. Therefore, when the gear shaft 24 rotates to adjust the ball bearing, it cannot be used to adjust the amount of air intake, but can be used to adjust the longitudinal tilt angle of the air intake. Therefore, when it is necessary to adjust the tilt angle of the air intake, it is not necessary to disassemble the nozzle base plate 7, but only to turn the angle of the gear shaft 24, which is more time-saving and labor-saving.

[0046] The working principle of this invention is:

[0047] In this invention, blowers 11 and 16 provide airflow guidance. High-temperature airflow enters the drying chamber 5 first through the heat source airflow inlet 6 for buffering, allowing airflow to simultaneously enter the circulation chamber from multiple sets of nozzles 8. Since the nozzles 8 are inclined downwards into the circulation chamber, a circulating guide is provided for the airflow. The raw material entering through the feed inlet 3 flows along the U-shaped circulation chamber under this guide, and is dispersed and dried by the airflow. Furthermore, because the simultaneously entering airflows have different inclination angles, the raw material is more easily dispersed by collision as it flows with the airflow, resulting in smoother dried particles. Figure 9 and 10 The comparison diagram is shown below; Since the nozzle 8 is located on the nozzle substrate 7, and the nozzle substrate 7 is detachably installed at the through-hole to achieve isolation between the drying chamber 5 and the C-shaped tube 1, quick adjustment and maintenance can be achieved by replacing the nozzle substrate 7.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A drying system of a continuous flash-drying chamber, based on a continuous flash-drying chamber, characterized in that, The continuous instantaneous airflow drying cavity comprises a loop-shaped closed circulation cavity composed of C-shaped pipe one (1) and C-shaped pipe two (2) which are butt-jointed, the upper side wall of the cavity top of the C-shaped pipe one (1) is provided with a feeding port (3) for receiving feeding material, the lower side wall of the cavity top of the C-shaped pipe two (2) is provided with a discharging port (4) for receiving discharging material, and a group of drying chambers (5) are arranged on the side of the C-shaped pipe one (1) away from the C-shaped pipe two (2), the bottom of the drying chamber (5) is provided with a heat source airflow inlet (6), the connecting part of the C-shaped pipe one (1) is provided with a through port, and a nozzle base plate (7) is detachably and sealingly mounted at the through port, a plurality of groups of nozzles (8) are formed in the nozzle base plate (7), the nozzles (8) are obliquely downwardly penetrated into the circulation cavity, and the oblique angle of the upper layer of nozzles (8) is greater than that of the lower layer of nozzles (8); A reinforcing support block (9) is arranged outside the through port on the wall of the C-shaped pipe one (1), a connecting column is arranged on the reinforcing support block (9), the edge mounting edge of the nozzle base plate (7) penetrates through the connecting column and is tightly packaged on the reinforcing support block (9) by a nut, and a maintenance port (10) opposite to the through port is further arranged on the drying chamber (5); The drying system of the continuous instantaneous airflow drying cavity further comprises a fan one (11), a series filter (12) and an electric heater (13) which are sequentially and serially mounted at the heat source airflow inlet (6), a cyclone separator (14), a dust collector (15) and a fan two (16) which are sequentially and serially connected at the discharging port (4), and a material cylinder (17), a peristaltic pump (18) and a cross valve (19) which are sequentially and serially connected at the feeding port (3), the airflow sucked by the fan one (11) is filtered by the series filter (12) and then heated by the electric heater (13) to form a heat source airflow which enters the drying chamber (5), the raw material in the material cylinder (17) is driven by the peristaltic pump (18) to enter the feeding port (3) when the cross valve (19) is opened, and the raw material in the circulation cavity is dispersed and dried under the action of the heat source airflow, the dried fine powder is discharged from the discharging port (4) and enters the cyclone separator (14) under the action of the airflow to separate the gas and the dried solid, and the airflow separated by the cyclone separator (14) is further filtered by the series dust collector (15) to collect the fine powder, and the airflow discharged from the dust collector (15) is discharged by the fan two (16). The nozzle base plate (7) is further embedded with a second ball (25) spaced from the nozzle (8), the second ball (25) is provided with a through hole (2), the air inlet end of the through hole (2) is always through with the air inlet end of the nozzle (8), the air outlet end is always through with the air outlet end of the nozzle (8), the outer wall of the second ball (25) is further fixed with two groups of arc-shaped guide blocks (2), the arc-shaped guide blocks (2) are guided and installed in the arc-shaped guide grooves (2), at least one group of arc-shaped guide blocks (2) is provided with an arc-shaped rack (26), the nozzle base plate (7) is further provided with a gear shaft (27) for engaging and driving the arc-shaped rack (26), the gear shaft (27) is longitudinally arranged, when it rotates, it is used for adjusting the horizontal direction of the air outlet end of the through hole (2) into the circulating cavity; The longitudinally arranged gear shaft (27) is connected end to end, and a group of micro motors (28) are connected to the top end, the micro motors (28) are used for synchronously driving the longitudinally arranged gear shaft (27) to rotate reciprocatingly, thereby synchronously adjusting the longitudinally arranged groups of balls to swing synchronously.

2. A continuous flash drying system according to claim 1, wherein, The top and bottom of the reinforcing support block (9) extend to the back-shaped corners of the circulating cavity.

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