Solution distribution device for alumina precursor gel

Abstract

The utility model relates to a solution distribution device for aluminum oxide precursor gel. Comprising a middle-layer plate, a first groove is formed in the middle-layer plate, a plurality of spinning nozzles are installed at the bottom of the first groove in a penetrating mode, an air inlet channel is formed in the side end of the middle-layer plate in the width direction of the middle-layer plate, and a plurality of air outlet holes communicated with the bottom of the middle-layer plate are formed in the air inlet channel. The bottom of the second groove is provided with spinneret orifices which penetrate through the bottom plate and are used for penetration of the spinnerets, the inner walls of the spinneret orifices and the spinnerets are provided with gas ejection gaps, the gas outlets are communicated with the second groove, the cover plate is detachably connected with the upper plate surface of the middle-layer plate, and the side end of the cover plate is provided with a glue inlet channel; glue inlet holes communicating with the bottom of the cover plate are formed in the inner wall of the glue inlet channel at intervals in the length direction, and the glue inlet holes communicate with the first groove. The structural design of the solution distribution device for aluminum oxide precursor gel is beneficial to long-time continuous macro-scale preparation of aluminum oxide precursor fibers.

Description

Technical Field

[0001] The utility model relates to the technical field of spinning devices, in particular to a solution distribution device for alumina precursor gel. Background Art

[0002] As a product of modern high and new technologies, micro-nano technology has developed rapidly in recent years. The scientific and technological achievements have been transformed from theoretical research to industrialization, and remarkable social and economic benefits have been achieved. With the pursuit of high-quality life by people, the role of micro-nano technology has become more prominent. As one of the many nano materials with relatively more applications, nano fibers have attracted wide attention from the scientific research community and the industrial community due to their characteristics such as ultra-fine diameter, high specific surface area, and high porosity.

[0003] The existing solution spraying technology is based on a capillary electrostatic spinning device with a ring drawing air flow to realize the preparation of nano-scale fibers. Taking the capillary as a single spinning unit, it needs to cooperate with single-hole directional liquid supply and ring-shaped gas drawing. For non-centralized liquid supply distribution, a lot of auxiliary equipment is required, and the structure is cumbersome, which is not conducive to long-term continuous large-scale preparation of alumina precursor fibers. Moreover, with high-pressure and high-speed gas, the air flow turbulence will cause the technical problem of large fluctuations in the quality of nano fibers.

[0004] Therefore, in view of the above problems, the utility model urgently provides a solution distribution device for alumina precursor gel. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a solution distribution device for alumina precursor gel. Through the structural design of the solution distribution device for alumina precursor gel, it is intended to solve the problems in the prior art that taking the capillary as a single spinning unit requires cooperation with single-hole directional liquid supply and ring-shaped gas drawing, non-centralized liquid supply distribution, a lot of auxiliary equipment is required, the structure is cumbersome, and it is not conducive to long-term continuous large-scale preparation of alumina precursor fibers. Moreover, with high-pressure and high-speed gas, the air flow turbulence will cause the technical problem of large fluctuations in the quality of nano fibers.

[0006] A solution distribution device for alumina precursor gel provided by the utility model includes a middle layer plate. A first groove is provided on the upper end surface of the middle layer plate. A plurality of spinnerets are inserted through the bottom of the first groove at intervals along its length. An air inlet channel is provided on the side end of the middle layer plate and is arranged along its width. A plurality of air outlet holes communicating with the bottom of the middle layer plate are arranged at intervals along the length of the air inlet channel.

[0007] The solution distribution device for alumina precursor gel further includes a bottom plate detachably connected to the lower plate surface of the middle layer plate. A second groove is provided on the upper plate surface of the bottom plate. A spinneret hole for each spinneret to penetrate through the bottom plate is provided at the bottom of the second groove. A gas ejection gap is provided between the inner wall of the spinneret hole and the spinneret. Each air outlet hole communicates with the second groove.

[0008] It further includes a cover plate detachably connected to the upper surface of the middle layer plate. The side end of the cover plate is provided with a glue inlet channel. Along the length of the inner wall of the glue inlet channel, glue inlet holes communicating with the bottom of the cover plate are arranged at intervals. The glue inlet holes communicate with the first groove.

[0009] Preferably, it further includes a cover plate located in the second groove for covering the spinneret. Along the length of the bottom of the cover plate, third through holes for each spinneret to pass through are provided. The cover plate is detachably connected to the middle layer plate. The outer wall of the cover plate and the second groove form a gas flow channel that gradually narrows from top to bottom. One end of the gas flow channel communicates with the air outlet hole, and the other end communicates with the gas ejection gap.

[0010] Preferably, a filter plate is covered on the top of the first groove. The filter plate is detachably connected to the middle layer plate. The filter plate is provided with a plurality of filter holes communicating with the first groove. On the upper surface of the filter plate, a gel accommodating groove is provided. At the bottom of the gel accommodating groove, a plurality of filter holes communicating with the first groove are arranged at intervals. The gel accommodating groove communicates with the glue inlet holes.

[0011] Preferably, on the upper surface of the bottom plate, a first embedding groove is provided along the circumference of the second groove, and a first sealing gasket is embedded in the embedding groove.

[0012] Preferably, on the upper surface of the middle layer plate, a second embedding groove is provided along the circumference of the first groove, and a second sealing gasket is embedded in the second embedding groove; on the lower surface of the cover plate, a third embedding groove corresponding to the second embedding groove up and down is provided, and the upper end surface of the second sealing gasket is embedded in the third embedding groove.

[0013] Preferably, two rows of spinnerets are arranged along the length of the middle layer plate. The lower surface of the middle layer plate is detachably provided with a cover plate corresponding to each row of spinnerets; a bottom plate is covered outside each cover plate; air inlet channels are provided on both sides of each row of spinnerets.

[0014] Preferably, it further includes a connecting plate, and the connecting plate is detachably connected to the cover plate.

[0015] Preferably, the longitudinal section of the spinneret hole is conical, and the taper is 25° - 45°.

[0016] Preferably, the longitudinal section of the first groove is an inverted cone.

[0017] Preferably, the materials of the middle layer plate, the bottom plate and the cover plate are all 316L stainless steel.

[0018] The solution distribution device for alumina precursor gel provided by the present utility model has the following improvements compared with the prior art:

[0019] 1. The solution distribution device for alumina precursor gel provided by the present utility model has a first groove formed on the middle layer plate. A plurality of spinnerets are mounted through the bottom of the first groove at intervals along the length. The glue inlets of each spinneret communicate with the first groove, enabling a plurality of spinnerets to be concentrated on the middle layer plate. By pouring the gel into the first groove, centralized liquid supply and distribution can be achieved. Moreover, gas enters the air inlet channel, the airflow is compressed through the air outlet holes and then passes through the second groove, and is ejected from the gas ejection gap. Under the stretching of the airflow, the gel stably forms fibers. The structure is simple, centralized liquid supply and distribution can be realized, and by changing and stabilizing the flow rate of the airflow, the technical problem of large fluctuations in the quality of nanofibers can be avoided, and alumina precursor fibers can be continuously and macroscopically prepared for a long time.

[0020] 2. The solution distribution device for alumina precursor gel provided by the present utility model further designs a cover plate. Each spinneret is fixedly connected to the cover plate, and the cover plate is detachably connected to the middle layer plate. The cover plate can ensure the stability of the spinneret, avoid the shaking of the spinneret driven by the airflow, and can realize the continuous and macroscopic preparation of alumina precursor fibers for a long time, ensuring the quality of nanofibers.

[0021] 3. The solution distribution device for alumina precursor gel provided by the present utility model further designs a filter plate. The filter plate covers the first groove, which can filter the glue solution entering the first groove to avoid impurities entering the first groove and causing blockage of the spinneret.

[0022] 4. The middle layer plate, spinneret, bottom plate and cover plate of the solution distribution device for alumina precursor gel provided by the present utility model are detachably connected, which is convenient for disassembly and assembly, and convenient for replacing parts, improving work efficiency. Description of the Drawings

[0023] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a schematic structural diagram (three-dimensional view) of the solution distribution device for alumina precursor gel described in the present utility model;

[0025] Figure 2 It is a schematic structural diagram (removing one bottom plate) of the solution distribution device for alumina precursor gel described in the present utility model;

[0026] Figure 3 It is a schematic structural diagram (removing the cover plate) of the solution distribution device for alumina precursor gel described in the present utility model;

[0027] Figure 4 Structural schematic diagram (3D view) of the bottom plate described in the present utility model;

[0028] Figure 5 Cross-sectional view (3D view) of the solution distribution device for the alumina precursor gel described in the present utility model;

[0029] Figure 6 Cross-sectional view (3D view) of the solution distribution device for the alumina precursor gel described in the present utility model;

[0030] Figure 7 Cross-sectional view (front view) of the solution distribution device for the alumina precursor gel described in the present utility model

[0031] Explanation of reference numerals in the drawings:

[0032] 1. Middle layer plate; 101. First groove; 102. First perforation; 103. Air inlet channel; 104. Air outlet hole; 2. Spinneret; 4. Bottom plate; 401. Second groove; 402. Spinning holes; 403. Gas ejection gap; 5. Cover plate; 501. Glue inlet channel; 502. Glue inlet hole; 6. Cover plate; 601. Third perforation; 7. Filter plate; 701. Gel accommodating groove; 702. Filter holes; 8. First gasket; 9. Second gasket; 10. Connecting plate. Detailed implementation manners

[0033] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0034] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0035] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown in

[0037] A solution dispensing device for an alumina precursor gel provided by the present utility model. A first groove 101 is opened on the upper surface of the middle layer plate 1. A plurality of spinnerets 2 are penetrated through the bottom of the first groove 101 at intervals along the length. The glue inlets of the spinnerets 2 are communicated with the first groove 101, so that a plurality of spinnerets 2 can be concentrated on the middle layer plate. By pouring the gel into the first groove 101, centralized liquid supply and distribution can be realized. Moreover, gas enters the air inlet channel 103, and the air flow is compressed through the air outlet holes 104 and then passes through the second groove 401 and is ejected from the gas ejection gap 403. The compression, release, and recompression of the air flow can be used for rectification to change the gas movement direction. Under the stable air flow drawing, the gel stably forms fibers. The structure is simple, centralized liquid supply and distribution can be realized, and the flow rate of the air flow can be changed and stabilized to avoid the technical problem of large fluctuations in the quality of nanofibers, and alumina precursor fibers can be continuously prepared in a large scale for a long time.

[0038] Furthermore, the middle layer plate 1, the spinneret 2, the bottom plate 4, and the cover plate 5 are detachably connected, which is convenient for disassembly and assembly, facilitates the replacement of parts, and improves work efficiency.

[0039] As Figure 2 shown, this embodiment further includes a cover plate 6 located in the second groove 401 for covering the spinneret. The bottom of the cover plate 6 is provided with a third through hole 601 along the length for each spinneret 2 to pass through. The cover plate 6 is detachably connected to the middle layer plate 1. The outer wall of the cover plate 6 and the second groove 401 form a gas flow channel that gradually narrows from top to bottom. One end of the gas flow channel is connected to the air outlet hole 104, and the other end is connected to the gas ejection gap 403.

[0040] The present utility model further designs the cover plate 6. Each spinneret 2 is fixedly connected to the cover plate, and the cover plate is detachably connected to the middle layer plate 1. The cover plate can ensure the stability of the spinneret, avoid the shaking of the spinneret driven by the air flow, and can realize the long-term continuous large-scale preparation of alumina precursor fibers, ensuring the quality of nanofibers.

[0041] As Figure 3 shown, the top of the first groove 101 of this embodiment is covered with a filter plate 7. The filter plate 7 is detachably connected to the middle layer plate 1. The filter plate 7 is provided with a plurality of filter holes communicating with the first groove 101. The upper plate surface of the filter plate 7 is provided with a gel accommodating groove 701. The bottom of the gel accommodating groove 701 is provided with a plurality of filter holes 702 at intervals and communicating with the first groove 101. The gel accommodating groove 701 is connected to the glue inlet hole 502.

[0042] The present utility model further designs the filter plate 7. The filter plate covers the first groove 101, and can filter the glue liquid entering the first groove 101 to avoid impurities entering the first groove 101 and causing blockage of the spinneret 2.

[0043] As Figure 5 、 Figure 6 shown, the upper plate surface of the bottom plate 4 of this embodiment is provided with a first embedding groove surrounding the second groove 401 in the circumferential direction, and a first sealing gasket 8 is embedded in the embedding groove; through the design of the first sealing gasket 8, the air flow pressure is ensured and air leakage is avoided.

[0044] As Figure 5 、 Figure 6 shown, the upper plate surface of the middle layer plate 1 of this embodiment is provided with a second embedding groove surrounding the first groove 101 in the circumferential direction, and a second sealing gasket 9 is embedded in the second embedding groove; the lower plate surface of the cover plate 5 is provided with a third embedding groove corresponding to the second embedding groove up and down, and the upper end surface of the second sealing gasket 9 is embedded in the third embedding groove. The second sealing gasket 9 can ensure that the glue liquid entering from the glue inlet channel 501 smoothly enters the first groove 101 and avoid the problem of glue leakage.

[0045] As Figure 5 、 6As shown in the figure, two rows of spinnerets 2 are arranged along the length of the middle layer plate 1 in this embodiment. The cover plate 6 corresponding to each row of spinnerets 2 is detachably mounted on the lower plate surface of the middle layer plate 1; a bottom plate 4 is externally covered on each cover plate 6; air inlet channels 103 are arranged on both sides of each row of spinnerets 2; with two rows of spinnerets 2, the working efficiency is high.

[0046] As Figure 1 shown in the figure, this embodiment further includes a connecting plate 10, the connecting plate 10 is detachably connected to the cover plate 5, and the connecting plate 10 is convenient for connecting with the equipment.

[0047] The longitudinal section of the spinneret hole 402 of the present utility model is conical, and the taper is 25°-45°.

[0048] The longitudinal section of the first groove 101 of the present utility model is an inverted cone.

[0049] The materials of the middle layer plate 1, the bottom plate 4 and the cover plate 5 of the present utility model are all 316L stainless steel.

[0050] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A solution dispensing device for an alumina precursor gel, characterized in that: It includes a middle layer plate (1). The upper end surface of the middle layer plate (1) is provided with a first groove (101). A plurality of spinnerets (2) are installed through the bottom of the first groove (101) at intervals along the length. The side end of the middle layer plate (1) is provided with an air inlet channel (103) arranged along its width. A plurality of air outlet holes (104) communicating with the bottom of the middle layer plate (1) are arranged at intervals along the length in the air inlet channel (103). It further includes a bottom plate (4) detachably connected to the lower plate surface of the middle layer plate (1). The upper plate surface of the bottom plate (4) is provided with a second groove (401). A spinneret hole (402) for each spinneret (2) to penetrate through is provided at the bottom of the second groove (401) and penetrates through the bottom plate (4). A gas ejection gap (403) is provided between the inner wall of the spinneret hole (402) and the spinneret (2). Each air outlet hole (104) communicates with the second groove (401). It further includes a cover plate (5) detachably connected to the upper plate surface of the middle layer plate (1). The side end of the cover plate (5) is provided with a glue inlet channel (501). Glue inlet holes (502) communicating with the bottom of the cover plate (5) are arranged at intervals along the length on the inner wall of the glue inlet channel (501). The glue inlet holes (502) communicate with the first groove (101).

2. The solution distribution device for alumina precursor gel according to claim 1, wherein: It further includes a cover plate (6) located in the second groove (401) for covering the spinneret. A third through hole (601) for each spinneret (2) to penetrate through is provided along the length at the bottom of the cover plate (6). The cover plate (6) is detachably connected to the middle layer plate (1). A gas flow channel gradually narrowing from top to bottom is formed between the outer wall of the cover plate (6) and the second groove (401). One end of the gas flow channel communicates with the air outlet hole (104), and the other end communicates with the gas ejection gap (403).

3. The solution dispensing device for alumina precursor gel according to claim 1, characterized in that: A filter plate (7) is covered on the top of the first groove (101). The filter plate (7) is detachably connected to the middle layer plate (1). The filter plate (7) is provided with a plurality of filter holes communicating with the first groove (101). A gel containing groove (701) is provided on the upper plate surface of the filter plate (7). A plurality of filter holes (702) communicating with the first groove (101) are arranged at intervals at the bottom of the gel containing groove (701). The gel containing groove (701) communicates with the glue inlet hole (502).

4. The solution dispensing device for alumina precursor gel according to claim 1, characterized in that: The upper plate surface of the bottom plate (4) is provided with a first embedding groove surrounding the second groove (401) in a circumferential manner. A first sealing gasket (8) is embedded in the embedding groove.

5. The solution dispensing device for alumina precursor gel according to claim 1, characterized in that: The upper plate surface of the middle layer plate (1) is provided with a second embedding groove surrounding the first groove (101) in a circumferential manner. A second sealing gasket (9) is embedded in the second embedding groove; a third embedding groove corresponding to the second embedding groove up and down is provided on the lower plate surface of the cover plate (5). The upper end surface of the second sealing gasket (9) is embedded in the third embedding groove.

6. The solution dispensing device for alumina precursor gel according to claim 1, characterized in that: Two rows of spinnerets (2) are arranged along the length of the middle layer plate (1). Cover plates (6) corresponding to each row of spinnerets (2) are detachably provided on the lower plate surface of the middle layer plate (1); a bottom plate (4) is covered outside each cover plate (6); air inlet channels (103) are provided on both sides of each row of spinnerets (2).

7. The solution dispensing device for alumina precursor gel according to claim 1, wherein: It further includes a connecting plate (10), and the connecting plate (10) is detachably connected to the cover plate (5).

8. The solution dispensing device for alumina precursor gel according to claim 1, characterized in that: The longitudinal section of the spinneret hole (402) is conical, and the taper is 25°-45°.

9. The solution dispensing device for alumina precursor gel according to claim 1, characterized in that: The longitudinal section of the first groove (101) is an inverted cone.

10. The solution dispensing device for alumina precursor gel according to claim 1, characterized in that: The middle layer plate (1), the bottom plate (4) and the cover plate (5) are all made of 316L stainless steel.

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