Feeding device of graphene preparation equipment and graphene preparation equipment

Abstract

The utility model relates to the technical field of graphene, in particular to a feeding device of graphene preparation equipment and the graphene preparation equipment. The hopper is hung on the cross beam of the bracket through a spring, and a discharge hole is formed in the bottom of the hopper; the feeding pipe is arranged below the hopper, a feeding port and a discharging port are formed in the feeding pipe, the discharging port is communicated with the feeding port through a telescopic pipe so as to be used for discharging the powdery graphene oxide in the hopper into the feeding pipe, and the powdery graphene oxide is discharged into a reactor of graphene preparation equipment through the discharging port so that the powdery graphene oxide can be reduced into graphene; one end of the crane scale is connected with the hopper, and the other end of the crane scale is connected with the cross beam, so that the weight of the powdery graphene oxide in the hopper is measured. According to the feeding device disclosed by the invention, the weight of the raw materials in the hopper can be accurately and quantitatively metered through the crane scale, so that the addition amount of the raw materials discharged into the reactor from the feeding device can be accurately controlled, and the quality of graphene is further ensured.

Description

Technical Field

[0001] The present disclosure relates to the field of graphene technology, and in particular to a feeding device for graphene preparation equipment and the graphene preparation equipment. Background Art

[0002] Graphene oxide contains oxygen-containing functional groups such as hydroxyl, epoxy, carboxyl, and ester groups. Due to the presence of these oxygen-containing functional groups, graphene oxide is much thicker than graphene itself. This also destroys its conjugated structure, rendering it less conductive and significantly reducing its mechanical properties. However, porous graphene materials prepared by microwave reduction of graphene oxide can partially restore this conjugated structure, improving mechanical properties. Furthermore, their porous, irregularly stacked structure provides excellent gas storage properties.

[0003] For example, a prior art system for the photo-microwave reduction of graphene oxide (CN 109250708 A) has been proposed. The system comprises a feeding unit, a reaction unit, and a collection unit, sequentially connected along the direction of material flow, as well as a microwave irradiation unit and a light wave irradiation unit disposed around the reaction unit. The feeding unit comprises a sequentially connected gas supply mechanism, an air jet pipe, and a feeding mechanism connected to the air jet pipe; the reaction unit comprises a tubular container with openings at both ends, which can serve as a reduction site; the collection unit can collect graphene; the microwave irradiation unit comprises a microwave source and a microwave resonant cavity, which can irradiate graphene oxide with microwaves in a traveling wave manner; and the light wave irradiation unit comprises a plurality of light wave tubes, which can irradiate graphene oxide. The advantages of this prior art include: fast heating, no thermal inertia, energy-saving and high efficiency, high reduction efficiency; good corrosion resistance, low energy consumption, and long equipment life.

[0004] However, the graphene production process requires precise control of the amount of raw material (powdered graphene oxide) added. Existing feeding devices cannot accurately control this amount, resulting in uneven quality of the produced graphene. Therefore, how to accurately control the amount of raw material added in the feeding device of graphene production equipment is an issue that technicians in this field need to consider. Utility Model Content

[0005] A technical problem to be solved by the present disclosure is how to accurately control the amount of raw material added by the feeding device of the above-mentioned graphene preparation equipment.

[0006] To solve the above technical problems, an embodiment of the present disclosure provides a feeding device for a graphene preparation device, including: a bracket; a hopper, the hopper is suspended on the cross beam of the bracket by a spring, and a discharge port is opened at its bottom; a feeding pipe, the feeding pipe is arranged below the hopper, and a feeding port and a discharging port are opened on the feeding pipe, the discharge port is communicated with the feeding port through a telescopic pipe for discharging the powdered graphene oxide in the hopper into the feeding pipe, and then discharged into the reactor of the graphene preparation device through the discharging port to reduce the graphene oxide to graphene; and a hanging scale, one end of the hanging scale is connected to the hopper, and the other end is connected to the cross beam to measure the weight of the powdered graphene oxide in the hopper.

[0007] In some embodiments, the feeding device further includes a stirring mechanism, and the stirring mechanism is arranged in the hopper.

[0008] In some embodiments, the feeding device further includes a feeding mechanism, and the feeding mechanism is arranged in the feeding pipe for transporting the powdered graphene oxide from the feeding port to the discharging port.

[0009] In some embodiments, a first nitrogen pipe is connected to the end of the feeding pipe near the feeding port for discharging nitrogen into the feeding pipe for cleaning the material.

[0010] In some embodiments, an inspection port is opened at the end of the feeding pipe near the discharging port.

[0011] In some embodiments, a discharge valve is arranged at the discharging port.

[0012] In some embodiments, a second nitrogen pipe is connected to the discharge valve.

[0013] In some embodiments, the feeding device further includes a nitrogen preparation mechanism, and both the first nitrogen pipe and the second nitrogen pipe are connected to the nitrogen preparation mechanism.

[0014] In some embodiments, a displacement sensor is arranged on the hopper.

[0015] In addition, an embodiment of the present disclosure provides a graphene preparation device, including the feeding device for the graphene preparation device described above.

[0016] According to the above technical solutions, the present disclosure provides a feeding device for a graphene preparation device and a graphene preparation device. The feeding device can accurately and quantitatively measure the weight of the raw material (powdered graphene oxide) in the hopper through the hanging scale, so as to accurately control the addition amount of the raw material discharged from the feeding device into the reactor, thereby ensuring the quality of graphene; the problem that the raw material accumulates in the hopper and cannot be discharged from the discharge port is avoided through the stirring mechanism; the raw material can be transported from the feeding port to the discharging port through the feeding mechanism; the waste of raw material is avoided and the mixing of raw materials in different batches is prevented through the first nitrogen pipe and the second nitrogen pipe. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a schematic diagram of a feeding device according to an embodiment of the present disclosure;

[0019] Figure 2 is a schematic diagram of a stirring mechanism according to an embodiment of the present disclosure;

[0020] Figure 3 is a schematic diagram of a feeding auger according to an embodiment of the present disclosure.

[0021] Description of reference numerals:

[0022] 1. Hopper; 2. Spring; 3. Cross beam; 4. Discharge port; 5. Feeding pipe; 6. Feeding opening; 7. Discharge opening; 8. Telescopic pipe; 9. Stirring mechanism; 11. First nitrogen pipe; 12. Inspection opening; 13. Discharge valve; 14. Second nitrogen pipe; 15. Stirring motor; 16. Stirring rod; 17. Stirring blade; 18. Feeding auger; 19. Feeding motor. Specific embodiments

[0023] The following will further describe in detail the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description and drawings of the following examples are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms, not limited to the specific embodiments disclosed herein, but including all technical solutions falling within the scope of the claims.

[0024] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of the components and steps, the components of the materials, the numerical expressions and values described in these embodiments should be interpreted as merely exemplary, rather than as limitations.

[0025] It should be noted that in the description of the present disclosure, unless otherwise specified, the meaning of "a plurality" is greater than or equal to two; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", etc. is only for the convenience of describing the present disclosure 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 thus should not be construed as a limitation on the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0026] In addition, the "first", "second" and similar terms used in the present disclosure do not denote any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. Words such as "including" or "comprising" mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements.

[0027] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "mounted", "connected" and "coupled" 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 directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances. When it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0028] All terms used in the present disclosure have the same meaning as understood by those of ordinary skill in the art to which the present disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, for example, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such here.

[0029] Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods and devices should be regarded as part of the specification.

[0030] As mentioned in the above background art, during the preparation process of graphene, it is necessary to precisely control the addition amount of raw materials (powdered graphene oxide). The existing feeding devices cannot precisely control the addition amount of raw materials, resulting in uneven quality of the prepared graphene. Based on this, the inventors of the present application provide a feeding device for a graphene preparation device and a graphene preparation device in one or more embodiments. The feeding device can accurately quantitatively measure the weight of the raw materials (powdered graphene oxide) in the hopper through a hanging scale, so as to accurately control the addition amount of the raw materials discharged from the feeding device into the reactor, thereby ensuring the quality of graphene. Thus, one or more problems in the prior art are solved.

[0031] In response to the above-mentioned technical problems, the present utility model provides a feeding device for a graphene preparation device, as Figure 1 shown, including: a bracket; a hopper 1, the hopper 1 is suspended on the cross beam 3 of the bracket by a spring 2, and its bottom is provided with a discharge port 4; a feeding pipe 5, the feeding pipe 5 is arranged below the hopper 1, and the feeding pipe 5 is provided with a feeding port 6 and a discharging port 7. The discharge port 4 is communicated with the feeding port 6 through a telescopic pipe 8 for discharging the powdered graphene oxide in the hopper 1 into the feeding pipe 5, and then discharged into the reactor of the graphene preparation device through the discharging port 7 to reduce the graphene oxide to graphene; and a hanging scale 20, one end of the hanging scale 20 is connected to the hopper 1, and the other end is connected to the cross beam 3 to measure the weight of the powdered graphene oxide in the hopper 1.

[0032] Specifically, when the feeding device feeds the reactor of the graphene preparation device, first, the discharge port 4 can be closed by a door or a similar mechanism (not shown in the figure) arranged near the discharge port 4, and then the raw materials (powdered graphene oxide) are discharged into the hopper 1 through the feeding port opened on the top wall of the hopper 1. Since the weight increases after adding the raw materials into the hopper 1, the spring 2 deforms (extends), the hopper 1 generates a downward displacement, and a downward pulling force is generated on the hanging scale 20, so that the weight of the raw materials in the hopper 1 can be accurately measured. Then, the discharge port 4 is opened, and the weighed raw materials in the hopper 1 are sent into the reactor through the feeding pipe 5, so that the addition amount of the raw materials in the reactor can be controlled, thereby ensuring the quality of graphene.

[0033] In some embodiments, as Figure 1 shown, there are two springs 2 and two hanging scales 20, and the weight of the raw materials in the hopper 1 is:

[0034] G = 2kX + 2T - g, where: G is the weight of the raw materials in the hopper 1, K is the elastic coefficient of the spring 2, X is the deformation amount of the spring 2, T is the weight value measured by the hanging scale 20, and g is the self-weight of the hopper 1.

[0035] Further, a sensor may be provided on the spring 2, and the deformation of the spring 2 can be transmitted to the control system of the graphene preparation device through the sensor. At the same time, the hanging scale 20 is also connected to the control system to transmit the data measured by the hanging scale 20 to the control system, and the control system can automatically calculate the weight of the raw materials in the hopper 1 using the above formula.

[0036] Compared with the prior art, the feeding device of a graphene preparation device of the present application can accurately and quantitatively measure the weight of the raw materials (powdered graphene oxide) in the hopper 1 through the hanging scale 20, so as to accurately control the addition amount of the raw materials discharged from the feeding device into the reactor, thereby ensuring the quality of graphene.

[0037] In some embodiments, as Figure 2 shown, the feeding device further includes a stirring mechanism 9, and the stirring mechanism 9 is arranged in the hopper 1. Specifically, the stirring mechanism 9 includes a stirring rod 16, a stirring blade 17 and a stirring motor 15. The stirring motor 15 is arranged on the top wall of the hopper 1 and is connected to one end of the stirring rod 16. The other end of the stirring rod 16 extends into the hopper 1. The stirring blade 17 is arranged on the stirring rod 16. The stirring motor 15 drives the stirring rod 16 to rotate, and the stirring rod 16 drives the stirring blade 17 to rotate in the hopper 1, which plays a role in stirring the raw materials in the hopper 1 and avoiding the problem that the raw materials accumulate in the hopper 1 and cannot be discharged from the discharge port 4.

[0038] In some embodiments, as Figure 1 and Figure 3 shown, the feeding device further includes a feeding mechanism, and the feeding mechanism is arranged in the feeding pipe 5 for transporting the powdered graphene oxide from the feeding port 6 to the discharging port 7. Specifically, the feeding mechanism includes a feeding auger 18 and a feeding motor 19. The feeding auger 18 extends from the feeding port 6 to the discharging port 7 along the length direction of the feeding pipe 5. The end of the feeding auger 18 is connected to the feeding motor 19 and rotates in the feeding pipe 5 under the drive of the feeding motor 19, so as to transport the raw materials from the feeding port 6 to the discharging port 7.

[0039] In some embodiments, as Figure 1 shown, a first nitrogen pipe 11 is connected to the end of the feeding pipe 5 near the feeding port 6 for discharging nitrogen into the feeding pipe 5 for cleaning the material. When the feeding pipe 5 completes the transportation of the raw materials in one batch, nitrogen at a certain pressure is discharged into the feeding pipe 5 through the first nitrogen pipe 11, and the raw materials remaining in the feeding pipe 5 can be blown to the discharging port 7 for discharge, which avoids the waste of raw materials and also prevents the mixing of raw materials in different batches.

[0040] In some embodiments, as Figure 1 shown, an inspection port 12 is opened on the end of the feeding pipe 5 near the discharging port 7. Through the inspection port 12, it is convenient to check and repair the operation of the equipment in the feeding pipe 5.

[0041] In some embodiments, as Figure 1 shown, a discharge valve 13 is provided on the discharge port 7. The opening and closing of the discharge port 7 can be controlled through the discharge valve 13, and the discharge speed of the discharge port 7 can be controlled by controlling the opening degree of the discharge valve 13.

[0042] In some embodiments, as Figure 1 shown, a second nitrogen pipe 14 is connected to the discharge valve 13. By discharging nitrogen gas with a certain pressure into the discharge valve 13 through the second nitrogen pipe 14, the raw materials remaining in the discharge valve 13 can be removed, avoiding waste and preventing the mixing of raw materials from different batches at the same time.

[0043] In some embodiments, the feeding device further includes a nitrogen preparation mechanism (not shown in the figure), and both the first nitrogen pipe 11 and the second nitrogen pipe 14 are connected to the nitrogen preparation mechanism. The nitrogen preparation mechanism provides a nitrogen source for the first nitrogen pipe 11 and the second nitrogen pipe 14.

[0044] In some embodiments, a displacement sensor (not shown in the figure) is provided on the hopper 1. By providing a displacement sensor on the hopper 1, the deformation amount of the spring 2 can be accurately grasped, and the data measured by the displacement sensor is transmitted to the control system for raw material weight calculation.

[0045] On the other hand, the present invention also provides a graphene preparation device, including the feeding device of the above-mentioned graphene preparation device.

[0046] In summary, compared with the prior art, the present disclosure provides a feeding device of a graphene preparation device and a graphene preparation device. The feeding device can accurately quantitatively measure the weight of the raw materials (powdered graphene oxide) in the hopper 1 through the hanging scale 20, so as to accurately control the addition amount of the raw materials discharged from the feeding device into the reactor, thereby ensuring the quality of graphene; the problem that the raw materials are stacked in the hopper 1 and cannot be discharged from the discharge port 4 is avoided through the stirring mechanism 9; the raw materials can be transported from the feeding port 6 to the discharge port 7 through the feeding mechanism; the waste of raw materials is avoided and the mixing of raw materials from different batches is also prevented through the first nitrogen pipe 11 and the second nitrogen pipe 14.

[0047] So far, the embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed here based on the above description.

[0048] Although some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or equivalent substitutions can be made for some technical features without departing from the scope and spirit of the present disclosure. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way.

Claims

1. A feeding device for a graphene preparation device, characterized in that, Comprising: Bracket; Hopper (1), the hopper (1) is suspended on the cross beam (3) of the bracket by a spring (2), and a discharge port (4) is opened at its bottom; Feeding pipe (5), the feeding pipe (5) is arranged below the hopper (1), a feeding port (6) and a discharging port (7) are opened on the feeding pipe (5), and the discharge port (4) is communicated with the feeding port (6) through a telescopic pipe (8) for discharging the powdered graphene oxide in the hopper (1) into the feeding pipe (5), and then discharged into the reactor of the graphene preparation device through the discharging port (7) to reduce the graphene oxide to graphene; and Hanging scale (20), one end of the hanging scale (20) is connected to the hopper (1), and the other end is connected to the cross beam (3) to measure the weight of the powdered graphene oxide in the hopper (1).

2. The feeding device of the graphene preparation equipment according to claim 1, characterized in that The feeding device further includes a stirring mechanism (9), and the stirring mechanism (9) is arranged in the hopper (1).

3. The feeding device of the graphene preparation equipment according to claim 1, characterized in that, The feeding device further includes a feeding mechanism, and the feeding mechanism is arranged in the feeding pipe (5) for transporting the powdered graphene oxide from the feeding port (6) to the discharging port (7).

4. The feeding device of the graphene preparation equipment according to claim 1, characterized in that, A first nitrogen pipe (11) is connected to the end of the feeding pipe (5) close to the feeding port (6) for discharging nitrogen into the feeding pipe (5) for cleaning the material.

5. The feeding device of the graphene preparation equipment according to claim 1, characterized in that, An inspection port (12) is opened at the end of the feeding pipe (5) close to the discharging port (7).

6. The feeding device of the graphene preparation equipment according to claim 4, characterized in that, A discharge valve (13) is arranged on the discharging port (7).

7. The feeding device of the graphene preparation equipment according to claim 6, characterized in that, A second nitrogen pipe (14) is connected to the discharge valve (13).

8. The feeding device of the graphene preparation equipment according to claim 7, characterized in that, The feeding device further includes a nitrogen preparation mechanism, and both the first nitrogen pipe (11) and the second nitrogen pipe (14) are connected to the nitrogen preparation mechanism.

9. The feeding device of the graphene preparation equipment according to claim 1, characterized in that, A displacement sensor is arranged on the hopper (1).

10. A graphene preparation device, characterized in that, Comprising the feeding device of the graphene preparation device according to any one of claims 1-9.

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