Stirring paddle for large-scale production of graphene hydrogel

Abstract

The utility model provides a stirring paddle for large-scale production of graphene hydrogel. The stirring paddle comprises a stirring shaft, and a blade type stirring paddle, a tooth type stirring paddle and an anchor type stirring paddle are sequentially arranged on the stirring shaft from top to bottom; the blade type stirring paddle is used for pressing a stirred material during rotation; the anchor type stirring paddle is used for upwards stirring materials settled at the bottom during rotation; and the tooth-shaped stirring paddle is used for dispersing and shearing the materials during rotation. When the stirring paddle disclosed by the utility model works, the blade type stirring paddle and the anchor type stirring paddle form a synergistic effect, so that materials continuously circularly flow towards the middle part, and are continuously sheared and subdivided by the tooth type stirring paddle, and the effect of fully dispersing the materials is achieved. An aqueous solution in which graphene oxide filter cake raw materials are agglomerated and caked can be fully stirred and uniformly scattered, and the stirring efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of mixing and stirring, and more specifically to a stirring paddle used for large-scale production of graphene hydrogel. Background Art

[0002] Graphene aerogel is a three-dimensional porous structure constructed with graphene materials as raw materials. It has the characteristics of ultra-lightness, high strength, high elasticity, high thermal stability and excellent electrical properties. It has broad application prospects in many fields, such as aerospace, national defense, energy, environmental protection, etc. One of the most commonly used preparation methods for large-scale production of graphene aerogel is to first prepare graphene hydrogel by chemical reduction. In the preparation process of graphene hydrogel, since the graphene oxide filter cake raw material is placed in the aqueous solution of the reactor, it is easy to agglomerate and clump, and it is difficult to completely disperse to form a sol. At the same time, the dispersion time is long, and the filter cake block is difficult to break up. In the prior art, although the traditional anchor-type stirring paddle can be used to stir mixtures with higher viscosity, the stirring method is too simple, lacks shear force, and the stirring efficiency of materials such as agglomerated filter cakes is low; and although the dispersion ability of the traditional blade stirring paddle has been improved, the dead zone is too large, and it is difficult to meet the preparation requirements of graphene hydrogel. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a stirring paddle for large-scale production of graphene hydrogel, which can fully stir and evenly disperse the aqueous solution of agglomerated graphene oxide filter cake raw materials, and has high stirring efficiency.

[0004] The technical solution of the utility model is to provide a stirring paddle for large-scale production of graphene hydrogel, including a stirring shaft, on which a blade stirring paddle, a tooth stirring paddle and an anchor stirring paddle are arranged in sequence from top to bottom; the blade stirring paddle is used to press down the stirred material when rotating; the anchor stirring paddle is used to stir up the material settled at the bottom when rotating; the tooth stirring paddle is used to disperse and shear the material when rotating.

[0005] Compared with the prior art, the stirring paddle used for large-scale production of graphene hydrogel of the utility model has the following advantages: when the stirring shaft rotates, the blade stirring paddle, the tooth stirring paddle and the anchor stirring paddle are driven to rotate synchronously, the blade stirring paddle rotates to press down the stirred material, so that the material located at the upper part flows to the middle part, the anchor stirring paddle rotates to stir up the material settled at the bottom, so that the material located at the bottom also flows to the middle part, and the tooth stirring paddle rotates to disperse and shear the material located in the middle part. In this way, the blade stirring paddle and the anchor stirring paddle form a synergistic effect, so that the material continuously circulates to the middle part, and is continuously sheared and subdivided by the tooth stirring paddle, so as to achieve the effect of fully dispersing the material, and the aqueous solution of the agglomerated graphene oxide filter cake raw material can be fully stirred and evenly dispersed, and the stirring efficiency is high.

[0006] Preferably, the toothed stirring paddle includes at least one fan-shaped blade. With this structure, the fan-shaped blade rotates with the shaft and can continuously shear and subdivide the material.

[0007] Preferably, the outer edge of the fan-shaped blade is provided with a plurality of first saw teeth. With this structure, the first saw teeth are provided on the fan-shaped blade, which improves the strength and efficiency of shearing and dispersing the material.

[0008] Preferably, the first saw teeth are all provided with second saw teeth, and the first saw teeth are arranged perpendicular to the second saw teeth. With this structure, the second saw teeth are arranged perpendicular to the first saw teeth, and the material can be sheared and dispersed simultaneously on the plane where the fan-shaped blade is located and the plane perpendicular to the fan-shaped blade, further improving the strength and efficiency of shearing and dispersing the material.

[0009] Preferably, the adjacent second saw teeth are arranged in reverse directions. With this structure, the adjacent second saw teeth shear and disperse the material at the same time on both sides of the upper and lower sides of the plane where the fan-shaped blade is located, further improving the efficiency of shearing and dispersing the material.

[0010] Preferably, the toothed stirring paddle comprises a second sleeve, the second sleeve is sleeved on the stirring shaft, and the fan-shaped blades are arranged on the circumference of the second sleeve. This structure is convenient for manufacturing and assembling the toothed stirring paddle.

[0011] Preferably, there are at least two fan-shaped blades and they are staggered up and down on the circumference of the second sleeve. With this structure, the fan-shaped blades are three-dimensionally distributed on the second sleeve and staggered up and down, forming a multi-layer shear layer in the middle, which is conducive to improving the efficiency of shearing and dispersing the material.

[0012] Preferably, at least two tooth-shaped stirring paddles are arranged on the stirring shaft between the blade-shaped stirring paddle and the anchor-shaped stirring paddle. With this structure, multiple tooth-shaped stirring paddles form a multi-layer shear layer in the middle, which is beneficial to improving the efficiency of shearing and dispersing the material.

[0013] Preferably, the projection of the fan-shaped blades on the cross section of the stirring shaft is evenly distributed around the stirring shaft. With this structure, the fan-shaped blades are evenly distributed in the circumference of the stirring shaft, which is beneficial to improving the shearing and dispersion efficiency of the material around the stirring shaft.

[0014] Preferably, the fan-shaped blade and the second shaft sleeve are an integrated structure. With this structure, the fan-shaped blade and the second shaft sleeve can be integrally cast or welded into an integral structure, which is convenient for overall assembly on the stirring shaft and reduces assembly steps.

[0015] Preferably, the fan-shaped blade and the second shaft sleeve are split structures, and the fan-shaped blade is detachably connected to the second shaft sleeve. With this structure, the fan-shaped blade and the second shaft sleeve can be freely disassembled and assembled, and the fan-shaped blade that is fatigue-deformed or damaged can be replaced conveniently.

[0016] Preferably, the blade-type stirring paddle includes at least one inclined blade. With this structure, the inclined blade can press down the stirred material when rotating with the shaft, so that the material located at the upper part flows to the middle part.

[0017] Preferably, the blade-type stirring paddle comprises a first sleeve, the first sleeve is sleeved on the stirring shaft, and the inclined blades are arranged on the circumference of the first sleeve. This structure is convenient for manufacturing and assembling the blade-type stirring paddle.

[0018] Preferably, the inclined blade type paddle and the first shaft sleeve are an integral structure. With this structure, the inclined blade type paddle and the first shaft sleeve can be integrally cast or welded into an integral structure, which is convenient for overall assembly on the stirring shaft and reduces assembly steps.

[0019] Preferably, the oblique blade and the first sleeve are split structures, and the oblique blade is detachably connected to the first sleeve. With this structure, the oblique blade and the first sleeve can be freely disassembled and assembled, and the fatigue-deformed or damaged oblique blade can be replaced conveniently.

[0020] Preferably, the anchor-type stirring blade includes at least one anchor-type bent blade. With this structure, the anchor-type bent blade can stir up the material settled at the bottom when rotating with the shaft, so that the material at the bottom also flows to the middle.

[0021] Preferably, the anchor-type stirring paddle comprises a third sleeve, the third sleeve is sleeved on the stirring shaft, and the anchor-type bent blade is arranged on the circumference of the third sleeve. This structure is convenient for manufacturing and assembling the anchor-type stirring paddle.

[0022] Preferably, the anchor-type bending blade and the third shaft sleeve are an integrated structure. With this structure, the anchor-type bending blade and the third shaft sleeve can be integrally cast or welded into an integral structure, which is convenient for overall assembly on the stirring shaft and reduces assembly steps.

[0023] Preferably, the anchor-type bending blade and the third shaft sleeve are split structures, and the anchor-type bending blade is detachably connected to the third shaft sleeve. With this structure, the anchor-type bending blade and the third shaft sleeve can be freely disassembled and assembled, and the anchor-type bending blade that is fatigue-deformed or damaged can be replaced conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of Example 1 of the stirring paddle used for large-scale production of graphene hydrogels of the utility model.

[0025] Figure 2 for Figure 1 Schematic diagram of the structure of the medium-toothed stirring paddle.

[0026] Figure 3 for Figure 2 Top view of the toothed stirring impeller.

[0027] Figure 4 This is a schematic structural diagram of Example 2 of the stirring paddle used for large-scale production of graphene hydrogels of the utility model.

[0028] Figure 5 This is a schematic structural diagram of Example 3 of the stirring paddle used for large-scale production of graphene hydrogels of the utility model.

[0029] Figure 6 This is a schematic structural diagram of Example 4 of the stirring paddle used for large-scale production of graphene hydrogels of the utility model.

[0030] As shown in the figure: 1. blade-type stirring paddle, 1-1. oblique blade-type paddle, 1-2. first shaft sleeve, 2. tooth-type stirring paddle, 2-1. fan-shaped paddle, 2-2. second shaft sleeve, 2-3. first serration, 2-4. second serration, 3. anchor-type stirring paddle, 3-1. anchor-type bent paddle, 3-2. third shaft sleeve, 4. stirring shaft. DETAILED DESCRIPTION

[0031] In order to better understand the present application, a more detailed description of various aspects of the present application will be made with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and do not limit the scope of the present application in any way. Throughout the specification, the same figure numerals refer to the same elements.

[0032] In the drawings, the thickness, size and shape of objects have been slightly exaggerated for ease of explanation. The drawings are only examples and are not drawn strictly to scale.

[0033] It should also be understood that the terms "comprises", "having", "includes", "comprising", when used in this specification, indicate the presence of the described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof. In addition, when a statement such as "...at least one" appears after a list of listed features, it modifies the entire listed features rather than modifying the individual elements in the list.

[0034] Embodiment 1:

[0035] like Figure 1 As shown, the stirring paddle used for large-scale production of graphene hydrogel of the utility model comprises a stirring shaft 4, on which a blade-type stirring paddle 1, a tooth-type stirring paddle 2 and an anchor-type stirring paddle 3 are arranged in sequence from top to bottom.

[0036] The blade-type stirring paddle 1 includes a first sleeve 1-2, which is sleeved on the stirring shaft 4 and fixed by welding or interference fit, or by key connection or bolt connection. The blade-type stirring paddle 1 includes at least one inclined blade 1-1, and the preferred embodiment includes 2-3 inclined blades 1-1. In this embodiment, there are two inclined blades 1-1, which are arranged on the circumference of the first sleeve 1-2 at 180 degrees to each other. The inclined blade 1-1 and the first sleeve 1-2 are an integrated structure, which can be cast as a whole or welded into a whole.

[0037] The toothed stirring paddle 2 includes a second sleeve 2-2, which is sleeved on the stirring shaft 4 and fixed by welding or interference fit, or by key connection or bolt connection. The anchor stirring paddle 3 includes at least one anchor bent blade 3-1, and the preferred embodiment includes 3-5 fan-shaped blades 2-1. In this embodiment, there are 3 fan-shaped blades 2-1, which are arranged on the circumference of the second sleeve 2-2 at 120° to each other, and the connection position between the fan-shaped blades 2-1 and the circumference of the second sleeve 2-2 is located on the same cross section of the second sleeve 2-2. The fan-shaped blades 2-1 and the second sleeve 2-2 are an integrated structure, which can be integrally cast or welded into an integral structure.

[0038] like Figure 2 and Figure 3 As shown in the figure, the outer edge of the fan-shaped blade 2-1 is provided with a plurality of first saw teeth 2-3, and the preferred embodiment is to provide 2-8 first saw teeth 2-3. In this embodiment, the outer edge of each fan-shaped blade 2-1 is provided with 4 first saw teeth 2-3, and each first saw tooth 2-3 is provided with a second saw tooth 2-4. The first saw teeth 2-3 and the second saw teeth 2-4 are vertically arranged, and the second saw teeth 2-4 on adjacent first saw teeth 2-3 are arranged in reverse up and down.

[0039] The anchor-type stirring paddle 3 includes a third sleeve 3-2, which is sleeved on the stirring shaft 4 and fixed by welding or interference fit, or by key connection or bolt connection. The anchor-type stirring paddle 3 includes at least one anchor-type bending blade 3-1. In this embodiment, there is a pair of anchor-type bending blades 3-1, which are arranged on the circumference of the third sleeve 3-2 at 180 degrees to each other. The anchor-type bending blade 3-1 and the third sleeve 3-2 are an integrated structure, which can be integrally cast or welded into an integral structure.

[0040] When the stirring paddle used for large-scale production of graphene hydrogel of the utility model is working, the stirring shaft 4 rotates to drive the blade stirring paddle 1, the tooth stirring paddle 2 and the anchor stirring paddle 3 to rotate synchronously; the blade stirring paddle 1 rotates to press down the stirred material, so that the material located at the upper part flows to the middle part, and the anchor stirring paddle 3 rotates to stir up the material settled at the bottom, so that the material located at the bottom also flows to the middle part, that is, the blade stirring paddle 1 and the anchor stirring paddle 3 form a synergistic effect, so that the material continuously circulates to the middle part, and the tooth stirring paddle 2 rotates to continuously disperse and shear the material located in the middle part, and the first serrations 2-3 arranged on the fan-shaped paddle 2-1 increase the strength and efficiency of the shear dispersion of the material, so as to achieve the effect of fully dispersing the material, so that the aqueous solution of the agglomerated graphene oxide filter cake raw material can be fully stirred and evenly dispersed, and the stirring efficiency is high.

[0041] Embodiment 2:

[0042] like Figure 4 As shown, the stirring paddle for large-scale production of graphene hydrogel in this embodiment is different from that in embodiment 1 in that three tooth-shaped stirring paddles 2 are arranged at intervals between the blade-shaped stirring paddle 1 and the anchor-shaped stirring paddle 3 on the stirring shaft 4, so that three shear layers are formed in the middle, which is conducive to improving the efficiency of shearing and dispersing the material. The three tooth-shaped stirring paddles 2 can be rotated and staggered relative to each other, so that the fan-shaped blades 2-1 on the three tooth-shaped stirring paddles 2 can be evenly distributed in the circumferential direction of the stirring shaft 4.

[0043] Embodiment 3:

[0044] like Figure 5 As shown, the stirring paddle for large-scale production of graphene hydrogel in this embodiment is different from that in Embodiment 1 in that the bevel blade 1-1 and the first sleeve 1-2 are split structures, and a bevel blade clamp is welded on the circumferential surface of the first sleeve 1-2, and the bevel blade 1-1 is detachably connected to the bevel blade clamp by bolts; the fan-shaped blade 2-1 and the second sleeve 2-2 are also split structures, and a fan-shaped blade clamp is welded on the circumferential surface of the second sleeve 2-2, and the fan-shaped blade 2-1 is detachably connected to the fan-shaped blade clamp by bolts; similarly, the anchor-type bent blade 3-1 and the third sleeve 3-2 are also split structures, and an anchor-type bent blade clamp is welded on the circumferential surface of the third sleeve 3-2, and the anchor-type bent blade 3-1 is detachably connected to the anchor-type bent blade clamp by bolts. In this way, no matter whether it is the inclined blade 1-1, the fan-shaped blade 2-1 or the anchor-type bent blade 3-1, they can be freely disassembled and replaced conveniently.

[0045] Embodiment 4:

[0046] like Figure 6As shown, the difference between the stirring paddle for large-scale production of graphene hydrogel in this embodiment and that in embodiment 1 is that the connection positions of the three fan-shaped blades 2-1 and the peripheral surface of the second sleeve 2-2 are not on the same plane, and the three fan-shaped blades 2-1 are distributed in a spiral shape on the peripheral surface of the second sleeve 2-2, that is, the fan-shaped blades 2-1 are arranged alternately up and down, and the projections of the fan-shaped blades 2-1 on the cross section of the second sleeve 2-2 are evenly distributed around the second sleeve 2-2. In this way, three shear layers are formed in the middle, which is conducive to improving the efficiency of shearing and dispersing the material.

[0047] In other embodiments, the toothed stirring paddle 2 may not be provided with the second sleeve 2-2, but the fan-shaped blades 2-1 may be directly connected to the stirring shaft 4; or the toothed stirring paddle 2 may be provided with the second sleeve 2-2, but the fan-shaped blades 2-1 may be provided on the end surface of the second sleeve 2-2. Similarly, the blade-type stirring paddle 1 may not be provided with the first sleeve 1-2, and the inclined blades 1-1 may be directly connected to the stirring shaft 4; or the blade-type stirring paddle 1 may be provided with the first sleeve 1-2, but the inclined blades 1-1 may be provided on the end surface of the first sleeve 1-2. Similarly, the anchor-type stirring paddle 3 may not be provided with the third sleeve 3-2, and the anchor-type bent blades 3-1 may be directly connected to the stirring shaft 4; or the anchor-type stirring paddle 3 may be provided with the third sleeve 3-2, but the anchor-type bent blades 3-1 may be provided on the end surface of the third sleeve 3-2.

[0048] The above are only specific embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. If the present invention is modified or replaced by equivalents without departing from the spirit and scope of the present invention, they should be included in the protection scope of the claims of the present invention.

Claims

1. A stirring paddle for large-scale production of graphene hydrogel, characterized in that: The stirring shaft (4) comprises a blade stirring paddle (1), a tooth stirring paddle (2) and an anchor stirring paddle (3) which are arranged in sequence from top to bottom; the blade stirring paddle (1) is used to press down the stirred material when rotating; the anchor stirring paddle (3) is used to stir up the material settled at the bottom when rotating; and the tooth stirring paddle (2) is used to disperse and shear the material when rotating.

2. The stirring paddle for large-scale production of graphene hydrogel according to claim 1, characterized in that: The toothed stirring paddle (2) comprises at least one fan-shaped blade (2-1), and a plurality of first saw teeth (2-3) are arranged on the outer edge of the fan-shaped blade (2-1).

3. The stirring paddle for large-scale production of graphene hydrogel according to claim 2, characterized in that: The first saw teeth (2-3) are each provided with a second saw tooth (2-4), the first saw teeth (2-3) and the second saw teeth (2-4) are arranged vertically, and adjacent second saw teeth (2-4) are arranged in reverse directions up and down.

4. The stirring paddle for large-scale production of graphene hydrogel according to claim 2, characterized in that: The toothed stirring paddle (2) comprises a second shaft sleeve (2-2), the second shaft sleeve (2-2) is sleeved on the stirring shaft (4), and the fan-shaped blades (2-1) are arranged on the circumference of the second shaft sleeve (2-2). The fan-shaped blades (2-1) have at least two pieces and are arranged in an up-and-down staggered manner.

5. The stirring paddle for large-scale production of graphene hydrogel according to claim 2, characterized in that: At least two tooth-shaped stirring paddles (2) are arranged on the stirring shaft (4) between the blade-shaped stirring paddle (1) and the anchor-shaped stirring paddle (3), and the tooth-shaped stirring paddles (2) are arranged in sequence up and down.

6. The stirring paddle for large-scale production of graphene hydrogel according to claim 4 or 5, characterized in that: The projections of the fan-shaped blades (2-1) on the cross section of the stirring shaft (4) are evenly distributed around the stirring shaft (4).

7. The stirring paddle for large-scale production of graphene hydrogel according to claim 2, characterized in that: The toothed stirring paddle (2) comprises a second shaft sleeve (2-2), the second shaft sleeve (2-2) is sleeved on the stirring shaft (4), the fan-shaped blades (2-1) are arranged on the circumferential surface of the second shaft sleeve (2-2), and the fan-shaped blades (2-1) and the second shaft sleeve (2-2) are an integrated structure.

8. The stirring paddle for large-scale production of graphene hydrogel according to claim 2, characterized in that: The toothed stirring paddle (2) comprises a second shaft sleeve (2-2), the second shaft sleeve (2-2) is sleeved on the stirring shaft (4), the fan-shaped blade (2-1) is arranged on the circumferential surface of the second shaft sleeve (2-2), the fan-shaped blade (2-1) and the second shaft sleeve (2-2) are split structures, and the fan-shaped blade (2-1) is detachably connected to the second shaft sleeve (2-2).

9. The stirring paddle for large-scale production of graphene hydrogel according to claim 1, characterized in that: The blade-type stirring impeller (1) comprises at least one inclined blade (1-1).

10. The stirring paddle for large-scale production of graphene hydrogel according to claim 9, characterized in that: The blade-type stirring paddle (1) comprises a first shaft sleeve (1-2), the first shaft sleeve (1-2) is sleeved on a stirring shaft (4), and the inclined blade-type paddle (1-1) is arranged on the circumferential surface of the first shaft sleeve (1-2).

11. The stirring paddle for large-scale production of graphene hydrogel according to claim 10, characterized in that: The inclined blade (1-1) and the first shaft sleeve (1-2) are an integrated structure.

12. The stirring paddle for large-scale production of graphene hydrogel according to claim 10, characterized in that: The oblique blade type blade (1-1) and the first shaft sleeve (1-2) are split structures, and the oblique blade type blade (1-1) is detachably connected to the first shaft sleeve (1-2).

13. The stirring paddle for large-scale production of graphene hydrogel according to claim 1, characterized in that: The anchor-type stirring paddle (3) comprises at least one anchor-type bent paddle blade (3-1).

14. The stirring paddle for large-scale production of graphene hydrogel according to claim 13, characterized in that: The anchor-type stirring paddle (3) comprises a third shaft sleeve (3-2), the third shaft sleeve (3-2) is sleeved on the stirring shaft (4), and the anchor-type bent blade (3-1) is arranged on the circumferential surface of the third shaft sleeve (3-2).

15. The stirring paddle for large-scale production of graphene hydrogel according to claim 14, characterized in that: The anchor-type folding blade (3-1) and the third shaft sleeve (3-2) are an integrated structure.

16. The stirring paddle for large-scale production of graphene hydrogel according to claim 14, characterized in that: The anchor-type folding blade (3-1) and the third shaft sleeve (3-2) are split structures, and the anchor-type folding blade (3-1) is detachably connected to the third shaft sleeve (3-2).

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