Vertical graphene oxide granulator

Abstract

The utility model relates to a vertical graphene oxide granulator which comprises an extrusion device and a cutting device, the extrusion device comprises a round pressing plate, the upper end of the round pressing plate is connected with a lead screw of the electric cylinder, the round pressing plate is located in the pressing cavity and can evenly extrude a graphene oxide material cake to the bottom of the cavity, the pressing cavity is vertically installed on the operation table plate, and anti-sticking coatings are arranged on the inner wall of the cavity and the bottom of the round pressing plate; the left side of the cavity is open and connected with the feeding groove, the upper end of the cavity is connected with the top of the electric cylinder, and the lower end of the cavity is connected with the pore plate; the electric cylinder is vertically fixed on the mounting bottom plate and can accurately control the downward pressing speed and stroke, the cutting device comprises a cutter, the cutter is mounted on a rotating shaft and located between the operation table plate and the bottom plate, the rotating shaft is connected with a motor through a coupler, strip-shaped graphene oxide penetrating through a pore plate is cut into granules, and the granulation efficiency and quality are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pelletizer technical field, specifically is a kind of pelletizer of graphene oxide cake is processed into graphene oxide particle. BACKGROUND

[0002] Currently, the main way of industrial production of graphene is: graphene oxide (GO) is converted into graphene by eliminating its surface functional groups and repairing the planar structure through thermal reduction, and graphene oxide (GO) is mostly prepared by improved Hummers method, which uses strong acid and oxidizing agent to oxidize and exfoliate graphite, and finally obtains GO cake, which has certain acidity; In order to ensure that graphene oxide is fully reacted in the thermal reduction process, graphene oxide cake needs to be processed into sheet or particle.

[0003] Most of the traditional graphene oxide granulation equipment is horizontal structure, which adopts the way of screw transverse propulsion material compression. During the propulsion of graphene oxide cake, the screw is subjected to uneven stress, which causes deflection change and friction between the screw and the inner wall of the cavity, causing damage to the inner wall of the cavity and affecting the granulation quality and efficiency. In addition, graphene oxide is easy to bond on the screw and the inner wall of the cavity, which requires more power consumption to generate a large amount of heat, resulting in energy waste. Moreover, it is impossible to extrude the graphene oxide cake to the bottom of the compression chamber, and it will also cause corrosion to the equipment. When the traditional horizontal granulator extrudes the graphene oxide cake to the orifice plate, the material is concentrated at the lower end face of the orifice plate due to uneven stress and self-weight of the material, and there is less material at the upper end face, which causes the speed of the strip-shaped graphene oxide extruded from the lower end face of the orifice plate to be faster than that of the strip-shaped graphene oxide extruded from the upper end face of the orifice plate, affecting the granulation quality and efficiency. Therefore, the utility model provides a vertical graphene oxide granulator. UTILITY MODEL CONTENT

[0004] Based on the above, the utility model provides a vertical graphene oxide granulator, which solves the problems in the background art. The device can improve the quality and efficiency of granulation, and save energy.

[0005] A vertical graphene oxide granulator, comprising an extrusion device and a cutting device, the extrusion device comprising a circular compression plate, a compression chamber, an orifice plate and an extrusion driving device, the extrusion driving device being installed on an operating table plate; the operating table plate right side installs bearing seat one, center has round hole, lower part is equipped with bottom plate. The cutting device comprises a cutter, a shaft and a motor, and the cutting device is installed below the operating table plate.

[0006] Further, the pressing cavity comprises a cylindrical cavity, a flange plate one and a flange plate two, the cylindrical cavity is a cylindrical pipeline, the flange plate one and the flange plate two are respectively installed on the upper end face and the lower end face of the cylindrical cavity, the flange plate one is connected with the extrusion driving device, the flange plate two is vertically connected with the operation table plate and the hole plate, the circular pressing plate is installed in the pressing cavity, the inner wall of the pressing cavity and the bottom of the circular pressing plate are provided with an anti-sticking coating, the anti-sticking coating is polytetrafluoroethylene, a square hole is opened on the left side and connected with the hollow square table, the hollow square table is provided with threaded holes at four corners and connected with the feeding groove.

[0007] Further, the side surface of the circular pressing plate is tightly matched with the inner wall of the pressing cavity, and the upper end is connected with the extrusion driving device.

[0008] Further, the extrusion driving device is an electric cylinder.

[0009] Further, the bottom of the electric cylinder is connected with the upper end of the four support columns through the mounting bottom plate, and the top is connected with the flange plate one of the pressing cavity through the flange plate three, the lead screw of the electric cylinder is connected with the circular pressing plate and located in the pressing cavity.

[0010] Further, the lower end of the support column is connected with the operation table plate and the bottom plate.

[0011] Further, a circular hole is opened in the center of the operation table plate, the diameter is consistent with the inner diameter of the pressing cavity, the hole plate is installed at the lower end of the circular hole of the operation table plate, threaded holes are arranged around the circular hole for the installation of the pressing cavity and the hole plate, a bearing seat one is installed on the right side of the circular hole, and through holes are opened at four corners of the operation table plate for horizontally installing the operation table plate on the support.

[0012] Further, the bearing seat one is used for installing the rotating shaft, the cutter is installed on the rotating shaft and located between the operation table plate and the bottom plate.

[0013] Further, a circular hole is opened on the bottom plate, the size is consistent with the hole diameter of the pressing cavity and the operation table plate, a discharging port is installed at the lower end of the bottom plate and located directly below the circular hole, a small hole is opened on the right side and has a diameter consistent with that of the small hole of the operation table plate for the installation of the rotating shaft, and threaded holes are arranged on the bottom plate for the installation of the four support columns.

[0014] Further, the rotating shaft is connected with the motor through the shaft coupling.

[0015] Further, the motor is a variable frequency speed regulation motor, the rotating speed of the cutter is changed by changing the rotating speed of the motor, so as to control the length of the graphene oxide particles, and the variable frequency speed regulation motor is installed below the support bottom plate.

[0016] Further, the support bottom plate is located at the lower end of the bottom plate, and four square supports are installed at the upper end of the bottom plate.

[0017] Further, the four square support upper end is provided with bearing seat two, which is used for cooperating with rotating shaft.

[0018] Compared with the traditional granulator, the vertical extrusion device and cutting device are adopted in the utility model, the vertical structure occupies small area, the extrusion driving device is electric cylinder, the down pressure stroke and speed can be accurately controlled, the traditional screw rotation extrusion movement is avoided, the friction and abrasion of the equipment are reduced, the service life and stability of the equipment are improved, the anti-sticking coating is arranged on the inner wall of the pressure material cavity and the bottom end of the circular pressure material plate, the down pressure resistance and the adhesion of the graphene oxide can be reduced, and the corrosion of the graphene oxide on the equipment can be prevented; the circular pressure material plate is tightly matched with the inner wall of the pressure material cavity to ensure that the materials are uniformly distributed on the hole plate, the cutting knife and the hole plate adopt non-coaxial design to avoid material accumulation on the cutting device, the cutting knife is driven by the variable frequency speed regulation motor to cut, the graphene oxide particles required for production are processed, and the granulation efficiency and quality are improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the overall structure schematic view of the utility model.

[0020] Figure 2 It is the extrusion device partial sectional view of the utility model.

[0021] Figure 3 It is the extrusion device full sectional view.

[0022] Figure 4 It is the feeding groove partial enlarged view.

[0023] Figure 5 It is the pressure material cavity structure schematic view.

[0024] Figure 6 It is the cutting device partial sectional view.

[0025] Figure 7 It is the cutting driving device partial enlarged view.

[0026] The figure mark is:

[0027] 13 - mounting bottom plate, 42 - feeding groove, 14 - support column, 1 - operation table plate,

[0028] 22 - four square support, 77 - discharge pipe, 25 - support, 5 - electric cylinder,

[0029] 4 - flange plate three, 2 - pressure material cavity, 19 - bearing seat one, 28 - shaft coupling,

[0030] 24 - motor, 3 - hole plate, 27 - arc baffle, 26 - cutting knife,

[0031] 23 - support base plate; 43 - round pressing plate; 54 - flange plate one;

[0032] 53 - flange plate two; 17 - hollow square table; 18 - rotating shaft; 29 - base plate;

[0033] 20 - bearing seat two DETAILED DESCRIPTION

[0034] The following refers to the accompanying Figure 1 - the accompanying Figure 6 , the utility model is described in detail.

[0035] Embodiment, referring to the accompanying Figure 1 to the accompanying Figure 6 A vertical graphene oxide granulator, comprising an extrusion device and a cutting device;The extrusion device includes a round pressing plate 43, the upper end of the round pressing plate is connected with the lead screw of the electric cylinder, is located inside the pressing cavity 2, the pressing cavity is vertically installed on the operation table plate 1 and the cavity inside is provided with an anti-sticking coating, the left side of the cavity is opened and is connected with a hollow square table 17, the hollow square table is connected with a feeding groove 42, the upper end of the pressing cavity is connected with the top of the electric cylinder, and the lower end is connected with a perforated plate 3;

[0036] The electric cylinder base is connected with the mounting base plate 13, the mounting base plate is connected with the upper end of four support columns 14, the support column is installed on the base plate 29, the operation table plate 1 is provided with a bearing seat one 19, the operation table plate is horizontally installed on the support 25, and the bottom plate is provided below the operation table plate, and the bottom plate lower end face is provided with a discharge pipe 77.The cutting device includes a cutter 26, the cutter is installed on the rotating shaft 18, is located between the operation table plate 1 and the base plate 29, and the rotating shaft is connected with the motor 24 through the shaft coupling 28.

[0037] Specifically, the graphene oxide cake is added to the inside of the pressing cavity 2 of the extrusion device through the feeding groove, the round pressing plate is connected with the lead screw of the electric cylinder, the lead screw of the electric cylinder is located at the initial position, so the round pressing plate 43 is located at the top end of the pressing cavity.

[0038] Further, referring to the accompanying Figure 1 to the accompanying Figure 5; the flange plate 54 on the upper end of the material pressing cavity is connected with the flange plate 3 through bolts to make the screw rod of the electric cylinder and the axis of the material pressing cavity be in the same straight line, the flange plate 3 is connected with the top of the electric cylinder through bolts, the flange plate 2 on the bottom of the material pressing cavity is connected with the operation table plate and the hole plate through bolts. A hole is opened on the left side of the upper end of the material pressing cavity and is connected with the hollow square table 17, the hollow square table is provided with threaded holes in four corners, is connected with the feeding groove 42 through bolts 37, the feeding groove is provided as a groove with slope, is used for putting the graphene oxide cake into the material pressing cavity 2. The material of the material pressing cavity is selected as 40Cr, the material has high strength and hardness, good toughness, excellent wear resistance and the like, and is the preferred material for manufacturing the cavity. The down-pressing speed and stroke of the screw rod of the electric cylinder are controlled by PLC, the signals collected by the pressure sensor during down-pressing are transmitted to PLC through an A / D conversion module, the down-pressing speed is changed according to the pressure after comparison with the stored program, and the down-pressing action is terminated according to the screw rod stroke set in advance, at this time, the circular material pressing plate 43 uniformly presses the graphene oxide cake out of the hole plate, and the extrusion is completed.

[0039] Further, referring to the accompanying drawings Figure 3 ; the extrusion driving device is an electric cylinder 5, the electric cylinder is connected with the mounting bottom plate 13 through bolts, the mounting bottom plate is connected with the upper ends of four support columns 14 through bolts, the support columns are perpendicular to the mounting bottom plate, the lower ends of the support columns are in a stepped structure, pass through the operation table plate and are mounted on the bottom plate 29. The operation table plate is provided with a circular hole in the center, the inner diameter of the circular hole is consistent with the material pressing cavity, and a bearing seat 1 is arranged on the right side of the circular hole and is mounted on the operation table plate 1 through bolts.

[0040] Further, referring to the accompanying drawings Figure 6 to the accompanying drawings Figure 7 ; the cutting device includes a cutter 26 below the hole plate 3, is used for cutting the strip-shaped graphene oxide extruded from the hole plate 3 into granular, the cutter is mounted on the rotating shaft 18 through a key, the cutter is in a "cross" structure, the length of the cutter blade is slightly greater than the diameter of the hole plate, an arc-shaped baffle 27 is arranged around the cutter, the arc-shaped baffle is welded on the bottom plate 29 and is used for preventing the cut graphene oxide particles from scattering around. The upper end of the rotating shaft 18 is matched with the bearing seat 1 9, the lower end of the rotating shaft is matched with the bearing seat 2 0, the lower end of the rotating shaft is connected with the motor 24 through a coupling 28. The bearing seat 2 0 is mounted on the upper end surface of the four square supports 22 through bolts, the four square supports 22 are mounted on the upper end surface of the supporting bottom plate 23, the supporting bottom plate is mounted on the support 25 through bolts, the lower end surface is connected with the motor 24, and the supporting bottom plate is provided with a hole in the center so that the rotating shaft of the motor passes through. The motor is a variable frequency motor, can change the rotating speed of the motor according to actual production needs, drives the cutter to rotate and cut the graphene oxide particles meeting the production needs.

[0041] Further, referring to the accompanying drawings Figure 1The discharge pipe 77 is installed at the lower end surface of the bottom plate 29, and the upper end circular aperture is consistent with the inner diameter of the pressing cavity 2; the cutter 26 cuts the strip-shaped graphene oxide into granular shape; the rotating shaft of the cutter is not on the same axis as the center line of the pressing cavity, so that the graphene oxide particles will not fall on the motor; the finished product falls into the discharge pipe and reaches the lower end of the discharge pipe by gravity, and finally enters the collecting device.

[0042] The graphene oxide cake is added to the pressing cavity through the feeding slot 42, the screw rod of the electric cylinder 5 is at the initial position, and the circular pressing plate 43 connected with the screw rod of the electric cylinder is located at the top end of the pressing cavity; after the start button is pressed, the screw rod of the electric cylinder moves downward, so that the circular pressing plate 43 starts to press the graphene oxide cake downward; the graphene oxide cake is pressed to the bottom of the pressing cavity 2 under the uniform extrusion of the circular pressing plate; as the circular pressing plate continues to press downward, the graphene oxide becomes strip-shaped through the hole plate 3 connected with the bottom of the pressing cavity; the cutter 26 rotates at a pre-set speed to cut the strip-shaped graphene oxide extruded from the hole plate into granular shape; the graphene oxide falls into the discharge pipe 77 connected with the bottom plate by gravity, reaches the bottom end and enters the collecting device.

[0043] The above is only the preferred embodiment of the present application, and for those skilled in the art, the specific implementation manner and application range can be changed according to the idea of the present application, and the content of the specification should not be understood as the limitation of the present application.

Claims

1. A vertical graphene oxide prilling machine characterized by: The extrusion device includes a circular pressing plate, a pressing cavity, a hole plate, a support, an operating table plate, a bearing seat one and an extrusion driving device, which are installed on the operating table plate; the cutting device includes a bottom plate, a cutting knife, a rotating shaft, a motor, a mounting bottom plate, a square support, an arc-shaped baffle, a discharge pipe, a shaft coupling and a bearing seat two, which are installed below the operating table plate; the bearing seat one is installed on the right side of the operating table plate, a circular hole is formed in the center of the operating table plate, and the bottom plate is installed below the operating table plate; the feeding device includes a feeding groove and a hollow square table.

2. A vertical graphene oxide granulator according to claim 1, characterized in that: The pressing cavity includes a flange plate one, a flange plate two and a cylindrical cavity, the flange plate one is installed on the upper end of the cylindrical cavity, the flange plate two is installed on the lower end of the cylindrical cavity, the flange plate two is connected with the operating table plate and the hole plate vertically, a square hole is formed on the left side of the cylindrical cavity and connected with the hollow square table, and the hollow square table is connected with the feeding groove.

3. A vertical graphene oxide granulator according to claim 1, characterized in that: The extrusion driving device is an electric cylinder, which includes a screw rod, is connected with the upper end of four supports through the mounting bottom plate and is connected with the flange plate one of the pressing cavity through the flange plate three at the top, is connected with the bottom plate at the lower end of the supports and is connected with the circular pressing plate through the screw rod.

4. A vertical graphene oxide granulator according to claim 1, characterized in that: The outer diameter of the circular pressing plate is consistent with the inner diameter of the pressing cavity and is tightly attached to the inside of the pressing cavity, and the upper end of the circular pressing plate is connected with the screw rod of the electric cylinder.

5. A vertical graphene oxide granulator as claimed in claim 1, wherein: The cutting knife is installed on the rotating shaft between the operating table plate and the bottom plate, the rotating shaft is assembled with the motor through the shaft coupling, the motor is installed below the supporting bottom plate, the square support is installed above the supporting bottom plate, and the bearing seat two is installed on the top of the square support.

6. A vertical graphene oxide granulator according to claim 1 or 3, characterized in that: The bottom plate is installed below the operating table plate and is provided with a hole in the center, the arc-shaped baffle is welded on the upper surface of the bottom plate around the cutting knife, screw holes are arranged on the bottom plate for connecting with the supports, the discharge pipe is connected with the lower surface of the bottom plate, and the discharge pipe is tapered.

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