Standing wave suspended nanocellulose directional drying former

Abstract

The application discloses a standing wave suspended nanocellulose directional drying and shaping device, which comprises an ultrasonic wave suspender body, and further comprises U-shaped heating pipes, at least four of which are arranged in two groups, and two groups of the U-shaped heating pipes are slidably arranged on the ultrasonic wave suspender body; the two groups of the U-shaped heating pipes are oppositely arranged on two sides of an ultrasonic wave suspension area, and a first drying space for drying the suspended nanocellulose material is formed between the two groups of the U-shaped heating pipes. The standing wave suspended nanocellulose directional drying and shaping device can form a uniform and closed first drying space by oppositely arranging two groups of the U-shaped heating pipes on two sides of the ultrasonic wave suspension area, so that the suspended nanocellulose is uniformly heated; the U-shaped heating pipes are slidably arranged on the ultrasonic wave suspender body, the distance between the heating pipes and the material is reduced when the U-shaped heating pipes move towards each other, the heating intensity is improved, the operation is simple, and the size of the first drying space and the heating intensity can be quickly changed.

Description

Technical Field

[0001] This invention relates to the field of standing wave suspension technology, and more specifically to a standing wave suspended nanocellulose directional drying and shaping device. Background Technology

[0002] As is well known, ultrasonic standing wave levitation devices can achieve non-contact levitation of materials using the force of sound field. When processing lightweight and structurally sensitive materials such as nanocellulose, they avoid problems such as surface contact, extrusion deformation and fiber adhesion caused by traditional carrier support, providing a feasible physical platform for non-destructive processing of nanocellulose.

[0003] When drying nanocellulose in a suspended state, external hot air blowing is used to achieve heating and dehydration. That is, an airflow channel is set up near the suspension area, and hot air is continuously introduced to heat and dry the material, so that the nanocellulose can complete the dehydration in a suspended state.

[0004] When the ultrasonic standing wave suspension device suspends nanocellulose, the airflow itself will disturb the ultrasonic standing wave field during the drying process with external hot air, which will disrupt the suspension stability of the nanocellulose and cause it to shift position, swing, or even fall. At the same time, uneven distribution of hot air will cause local overheating or insufficient drying, and the airflow impact will also cause fiber orientation disorder, which cannot meet the high-quality requirements for drying and shaping of nanocellulose. Summary of the Invention

[0005] In view of the above-mentioned problems existing in the prior art, one aspect of the present invention is to provide a standing wave suspended nanocellulose directional drying and shaping device to overcome the above-mentioned shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides a standing wave suspended nanocellulose directional drying and shaping device, comprising an ultrasonic levitation body and further comprising: at least four U-shaped heating tubes, arranged in pairs, with two sets of U-shaped heating tubes slidably disposed on the ultrasonic levitation body; the two sets of U-shaped heating tubes are arranged opposite each other on both sides of the ultrasonic levitation area, and a first drying space for drying the suspended nanocellulose material is formed between the two sets of U-shaped heating tubes; and a drive adjustment mechanism, comprising two connected links and fasteners, each link being connected to a corresponding set of U-shaped heating tubes. When the fasteners move, they drive the links to move synchronously, causing the two sets of U-shaped heating tubes to slide towards or away from each other, thereby adjusting the relative position of each set of U-shaped heating tubes and the suspended nanocellulose material.

[0007] Preferably, each of the U-shaped heating tubes is a heating lamp, and every two heating lamps are connected by a clamp.

[0008] Preferably, each of the clamps is provided with a crossbeam hinged to each of the connecting rods, and each crossbeam is slidably engaged with the ultrasonic levitation device body.

[0009] Preferably, one of the crossbars has a guide groove that slides with the corresponding clamping plate.

[0010] Preferably, one of the crossbars is provided with a second insertion hole, which is connected to a first insertion hole on the corresponding clamp plate via a pin.

[0011] Preferably, one group of heating lamps slides downward relative to the other group of heating lamps, and after sliding, the two groups of heating lamps are arranged vertically in an alternating manner, forming a second drying space between them.

[0012] Preferably, the drive adjustment mechanism further includes a guide seat and a receiving block, the guide seat being disposed on the ultrasonic levitation device body.

[0013] Preferably, the receiving block is vertically slidably connected to the ultrasonic levitation device body, the fastener is threadedly connected to the guide seat, and the bottom of the fastener is rotatably connected to the receiving block.

[0014] Preferably, the ultrasonic levitation device body has transmitting parts arranged opposite to each other, each transmitting part is composed of multiple transmitters, and two transmitting parts are distributed vertically and vertically to form the ultrasonic levitation area between them.

[0015] Preferably, the ultrasonic levitation device body is also provided with an operation section, a display screen, and a button section.

[0016] In the above technical solution, the standing wave suspended nanocellulose directional drying and shaping device provided by the present invention has the following beneficial effects: In this invention, two sets of U-shaped heating tubes are arranged opposite each other on both sides of the ultrasonic suspension area, forming a uniform and enclosed first drying space, ensuring uniform heating of the suspended nanocellulose and avoiding local overheating or insufficient drying. The U-shaped heating tubes are slidably mounted on the ultrasonic suspender body, and the drive adjustment mechanism composed of connecting rods and fasteners can adjust the distance between the heating tubes and the nanocellulose, adapting to the drying and shaping requirements of different materials. When moving towards each other, the distance between the heating tubes and the material decreases, such as... Figure 4 As shown in the diagram, the heating intensity increases, and the distance between the heating tube and the material increases when moving in opposite directions, resulting in a decrease in heating intensity. The operation is simple, and the size and heating intensity of the first drying space can be quickly changed. Furthermore, U-shaped heating tubes are used for radiant heating, which, by surrounding the material, eliminates the need for hot air flow, avoids disturbing the ultrasonic suspension field, and improves the suspension stability of nanocellulose within the ultrasonic suspension area. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partially enlarged structural diagram of the initial state of the two sets of heating lamps of the present invention; Figure 3 This is a partially enlarged structural diagram of another embodiment of the two sets of heating lamps of the present invention; Figure 4 This is a partially enlarged structural diagram of the two sets of heating lamps in another implementation state of the present invention; Figure 5 This is a partially enlarged structural diagram of the second drying space of the present invention; Figure 6 This is a partially enlarged structural diagram of another state of the second drying space of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Ultrasonic levitation device body; 2. Heating lamp; 3. Clamping plate; 4. Cross frame; 5. Connecting rod; 6. Support block; 7. Guide seat; 1.1. Base; 1.2. Transmitter; 1.3. Operating unit; 1.4. Display screen; 1.5. Button unit; 3.1. First socket; 4.1. Second socket; 4.2. Pin; 4.3. Guide groove; 6.1. Fastener. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] Please see Figures 1-6 The standing wave suspension nanocellulose directional drying and shaping device is used to solve the problems that when nanocellulose is suspended by ultrasonic standing wave suspension devices and then dried with external hot air, the airflow itself will disturb the ultrasonic standing wave field, destroy the suspension stability of nanocellulose, and easily cause positional displacement, swinging or even falling. At the same time, uneven distribution of hot air will cause local overheating or insufficient drying, and airflow impact will also cause fiber orientation disorder, which cannot meet the high-quality requirements of nanocellulose drying and shaping.

[0022] As a further technical solution proposed in this invention, the ultrasonic levitation device body 1 includes: at least four U-shaped heating tubes, arranged in pairs, with two sets of U-shaped heating tubes slidably disposed on the ultrasonic levitation device body 1; the two sets of U-shaped heating tubes are arranged opposite to each other on both sides of the ultrasonic levitation area, and a first drying space for drying the suspended nanocellulose material is formed between the two sets of U-shaped heating tubes; and a drive adjustment mechanism, which includes two connecting rods 5 and fasteners 6.1 connected to each other, with each connecting rod 5 corresponding to one set of U-shaped heating tubes. When fastener 6.1 moves, it drives each connecting rod 5 to move synchronously, causing the two sets of U-shaped heating tubes to slide towards or away from each other. This adjusts the relative position of each set of U-shaped heating tubes and the suspended nanocellulose material. Specifically, the two sets of U-shaped heating tubes are arranged opposite each other on both sides of the ultrasonic suspension area, forming a uniform and enclosed first drying space. This ensures that the suspended nanocellulose is heated evenly, avoiding local overheating or insufficient drying. The U-shaped heating tubes are slidably mounted on the ultrasonic suspender body 1. Together with the driving adjustment mechanism formed by connecting rods 5 and fastener 6.1, they can adjust the distance between the heating tubes and the nanocellulose to adapt to the drying and shaping requirements of different materials. When they move towards each other, the distance between the heating tubes and the material decreases. Figure 4 As shown in the diagram, the heating intensity increases, and the distance between the heating tube and the material increases when moving in opposite directions, resulting in a decrease in heating intensity. The operation is simple, and the size and heating intensity of the first drying space can be quickly changed. Furthermore, U-shaped heating tubes are used for radiant heating, which, by surrounding the material, eliminates the need for hot air flow, avoids disturbing the ultrasonic suspension field, and improves the suspension stability of nanocellulose within the ultrasonic suspension area.

[0023] In this embodiment, the number of U-shaped heating tubes is set to at least four, which can form a double-layer drying space in the suspension area, realize synchronous and uniform heating of the nanocellulose in the upper and lower parts, improve the heating coverage and drying uniformity, avoid the drying dead corners caused by a single heating surface, and ensure that the overall drying degree of nanocellulose is consistent. The U-shaped heating tube adopts an arc-shaped radiation surface structure with a large heat radiation coverage angle, which concentrates the heat to the center of the suspension area, further improving the heating uniformity. The heating tubes are arranged in two layers to form a three-dimensional heating field, so that the nanocellulose is heated evenly in the thickness direction.

[0024] In another embodiment of the present invention, preferably, each U-shaped heating tube is a heating lamp 2. Every two heating lamps 2 are connected by a clamp 3. Each clamp 3 is provided with a crossbeam 4 that is hinged to each connecting rod 5. Each crossbeam 4 is slidably engaged with the ultrasonic levitation body 1. Furthermore, the heating lamp 2 has concentrated heat and high heat radiation efficiency, which can improve drying efficiency. Every two heating lamps 2 are connected by a clamp 3, so that the position of the heating lamp 2 on the same side is fixed and the heated area is regular and uniform. Each clamp 3 is provided with a crossbeam 4 that is hinged to each connecting rod 5, so that the structure is stable and provides stable hinge support for the connecting rod 5, and the power transmission is smooth. Each crossbeam 4 is slidably engaged with the ultrasonic levitation body 1, so that the heating lamp 2 is stably guided when it is moved and adjusted.

[0025] In the initial state of the heating lamp 2 in this embodiment, the inner diameter of the heating lamp 2 on both sides is larger than the outer diameter of the emitting part, so as to avoid the heating lamp 2 from blocking or interfering with the ultrasonic sound field, improving the smooth propagation of ultrasonic waves and the stability of the standing wave field. The size of the heating lamp 2 matches the suspension area. When the heating lamp 2 on both sides moves to the minimum distance, there is still enough suspension space in the middle, so that it will not come into contact or collide with the suspended nanocellulose and will not interfere with the suspension posture of the material.

[0026] In another embodiment of the present invention, one of the crossbeams 4 is provided with a guide groove 4.3 that slides with the corresponding clamping plate 3, and one of the crossbeams 4 is provided with a second insertion hole 4.1. The second insertion hole 4.1 is inserted into the first insertion hole 3.1 on the corresponding clamping plate 3 through a pin 4.2. One set of heating lamps 2 slides downward relative to another set of heating lamps 2. After sliding, the two sets of heating lamps 2 are arranged vertically in an alternating manner, forming a second drying space between them. Further, when one set of heating lamps 2 slides downward, the two sets of heating lamps 2 are arranged vertically in an alternating manner, forming a second drying space between the two sets of heating lamps 2, as shown. Figure 5 and Figure 6 As shown in the diagram, this structure allows the originally horizontally aligned heating lamps 2 to form a staggered three-dimensional heating layout, filling the heating blind spot in the middle area after the two sets of heating lamps 2 move towards each other, further expanding the heating coverage area, making the suspended nanocellulose more uniformly and fully heated in the entire drying space, avoiding local insufficient drying, and improving the uniformity of drying and shaping.

[0027] In this embodiment, the radiation areas of the staggered heating lamps 2 overlap, eliminating heating blank areas in the horizontal and vertical directions, making the temperature field in the entire suspended space more uniform, which is conducive to the orderly arrangement of nanocellulose fibers and improves the quality after directional shaping and drying.

[0028] In another embodiment of the present invention, the drive adjustment mechanism further includes a guide seat 7 and a receiving block 6. The guide seat 7 is disposed on the ultrasonic levitation device body 1, the receiving block 6 is vertically slidably connected to the ultrasonic levitation device body 1, and the fastener 6.1 is threadedly connected to the guide seat 7, with the bottom of the fastener 6.1 rotatably connected to the receiving block 6. Furthermore, the guide seat 7, disposed on the ultrasonic levitation device body 1, provides support and a guiding foundation for the fastener 6.1. Figure 3 As shown in the figure, the straightness of the adjustment process is improved. When the fastener 6.1 is rotated, the receiving block 6 is driven to rise and fall in the vertical direction, which in turn drives the connecting rod 5 to make each U-shaped heating tube move away from or towards each other.

[0029] In this embodiment, the fastener 6.1 is specifically a screw, which is threaded to the guide seat 7 to drive the receiving block 6 to slide. After the receiving block 6 slides, the two connecting rods 5 move synchronously, forcing the two crossbeams 4 to shift. At the same time, the self-locking of the screw threaded to the guide seat 7 makes the positions of the two sets of heating lamps 2 stable.

[0030] In another embodiment of the present invention, an ultrasonic levitation device body 1 has transmitting units arranged opposite each other, each transmitting unit consisting of multiple transmitters 1.2. Two transmitting units are distributed vertically and vertically, forming an ultrasonic levitation area between them. Each transmitting unit is mounted on the ultrasonic levitation device body 1 via a base 1.1. Figure 1 and Figure 2 As shown in the diagram, a stable and wider-coverage ultrasonic standing wave field is formed by the combined transmitting section of multiple transmitters 1.2 distributed vertically, which improves the stability and load-bearing capacity of the nanocellulose suspension and avoids material displacement or falling due to uneven sound field of a single transmitter 1.2. The coordinated work of multiple transmitters 1.2 can enhance the sound field intensity, adapt to nanocellulose materials of different sizes and weights, and expand the applicability of the device. The base 1.1 provides a reliable mounting foundation for the transmitter, which facilitates the position calibration and maintenance of the transmitter, ensures the coaxiality and sound field symmetry of the upper and lower transmitters, and further optimizes the stability of the suspension area. This is an existing technology.

[0031] In another embodiment provided by the present invention, such as Figure 1 As shown in the figure, the ultrasonic levitation device body 1 is also equipped with an operation unit 1.3, a display screen 1.4, and a button unit 1.5, which is the prior art. Furthermore, the display screen 1.4 can display key data such as ultrasonic levitation parameters, heating temperature, and adjustment position in real time, which makes it easy for operators to accurately grasp the working status. The button unit 1.5 directly completes the start, stop, and parameter adjustment operations. The operation unit 1.3 provides an integrated mounting carrier for each control element.

[0032] In this embodiment, the ultrasonic levitation device body 1 achieves the directional arrangement of nanocellulose through standing wave levitation. The ultrasonic standing wave field applies a uniform directional force to the nanocellulose fibers, causing the fibers to be arranged in an orderly manner along a fixed direction in a suspended state, without the need for additional directional mechanisms. The multiple transmitters 1.2 are arranged in a uniform manner, making the intensity distribution of the standing wave field more balanced and the material suspension posture more stable, which is more conducive to the directional arrangement of fibers. At the same time, the upper and lower transmitters adopt a reasonable spacing design to improve the sound field superposition effect and the uniformity of levitation force.

[0033] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A standing wave suspended nanocellulose directional drying and shaping device, comprising an ultrasonic suspender body (1), characterized in that, Also includes: There are at least four U-shaped heating tubes, with two tubes forming a group, and the two groups of U-shaped heating tubes are respectively slidably disposed on the ultrasonic levitation body (1); The two sets of U-shaped heating tubes are arranged opposite each other on both sides of the ultrasonic suspension area, and a first drying space for drying the suspended nanocellulose material is formed between the two sets of U-shaped heating tubes. The driving adjustment mechanism includes two connecting rods (5) and fasteners (6.1) connected to each other, and each connecting rod (5) is respectively connected to a set of U-shaped heating tubes; When the fastener (6.1) moves, it drives each of the connecting rods (5) to move synchronously, causing the two sets of U-shaped heating tubes to slide towards or away from each other, so as to adjust the relative position of each set of U-shaped heating tubes and the suspended nanocellulose material.

2. The standing wave suspended nanocellulose directional drying and shaping device according to claim 1, characterized in that, Each of the U-shaped heating tubes is specifically a heating lamp (2), and every two heating lamps (2) are connected by a clamp (3).

3. The standing wave suspended nanocellulose directional drying and shaping device according to claim 2, characterized in that, Each of the clamping plates (3) is provided with a crossbeam (4) that is hinged to each of the connecting rods (5), and each of the crossbeams (4) is slidably engaged with the ultrasonic levitation device body (1).

4. The standing wave suspended nanocellulose directional drying and shaping device according to claim 3, characterized in that, One of the crossbars (4) has a guide groove (4.3) that slides with the corresponding clamping plate (3).

5. The standing wave suspended nanocellulose directional drying and shaping device according to claim 4, characterized in that, One of the crossbars (4) has a second insertion hole (4.1), which is connected to the first insertion hole (3.1) on the corresponding clamp (3) by means of a pin (4.2).

6. The standing wave suspended nanocellulose directional drying and shaping device according to claim 5, characterized in that, One set of heating lamps (2) slides downward relative to the other set of heating lamps (2). After sliding, the two sets of heating lamps (2) are arranged vertically in an alternating manner, forming a second drying space between them.

7. The standing wave suspended nanocellulose directional drying and shaping device according to claim 1, characterized in that, The drive adjustment mechanism also includes a guide seat (7) and a receiving block (6), the guide seat (7) being disposed on the ultrasonic levitation body (1).

8. The standing wave suspended nanocellulose directional drying and shaping device according to claim 7, characterized in that, The receiving block (6) is vertically slidably connected to the ultrasonic levitation body (1), the fastener (6.1) is threadedly connected to the guide seat (7), and the bottom of the fastener (6.1) is rotatably connected to the receiving block (6).

9. The standing wave suspended nanocellulose directional drying and shaping device according to claim 1, characterized in that, The ultrasonic levitation device body (1) has transmitting parts arranged opposite to each other. Each transmitting part is composed of multiple transmitters (1.2). Two transmitting parts are distributed vertically and form the ultrasonic levitation area between them.

10. The standing wave suspended nanocellulose directional drying and shaping device according to claim 9, characterized in that, The ultrasonic levitation device body (1) is also provided with an operation unit (1.3), a display screen (1.4) and a button unit (1.5).

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