Powder graphene lossless adding device

Abstract

The utility model belongs to the technical field of graphene composite material preparation, and particularly relates to a powder graphene lossless adding device, a main body structure comprises a piston pump, a material cabinet and a filling gun, the material cabinet and the filling gun are respectively connected with the piston pump, and the piston pump is connected with the material cabinet through a suction pipeline and connected with the filling gun through a discharge pipeline. The material cabinet is provided with a sealing cover, a filter screen and a swinger driven by a motor, the piston pump structurally comprises a piston and an electro-hydraulic push-pull device connected with the piston, the filling gun is provided with a control trigger, the suction pipeline and the discharge pipeline are both connected with the adjustable constant pressure valve, and the sealing cover of the material cabinet is made of silica gel materials. The flexible pipes in the suction pipeline and the discharge pipeline are oil-resistant and acid-alkali-resistant PE high-strength flexible pipes, continuous and lossless addition of graphene is achieved through reciprocating motion of a piston in the piston pump, loss, environmental pollution and potential safety hazards in the graphene adding process can be eliminated, and powerful support is provided for large-scale production of graphene composite materials. The device is simple in structure, safe, environment-friendly and convenient to operate.

Description

Technical field:

[0001] The utility model belongs to the technical field of graphene composite material preparation, and in particular relates to a device for non-destructive addition of graphene powder, which can non-destructively add graphene powder to a receptor material. Background technology:

[0002] Graphene is a kind of carbon atom 2 The hexagonal, honeycomb lattice-shaped planar film composed of hybrid orbitals is a two-dimensional material with a thickness of only 0.335 nanometers and a specific surface area of ​​2630 m 2 / g. It has super stability, the carbon atoms in the structure are connected by conjugated bonds, and the C--C bond graphene is more stable than diamond; it has outstanding mechanical properties, with a tensile strength of 125GPa, an elastic modulus of 1.1TPa, and a strength limit of 42N / m 2 ; It has good light transmittance, with a transmittance of up to 97.7% (absorbance 2.3%); it has outstanding thermal conductivity, with a thermal conductivity of 5300W / mK at room temperature, which is 13 times that of copper; it has particularly outstanding electrochemical properties, and can adsorb and desorb various atoms and molecules. For example, nitrogen dioxide, ammonia, potassium and other adsorbates as donors or acceptors will cause the carrier concentration to increase; its electron mobility can reach 200,000cm 2 / Vs, is the electron mobility in single crystal silicon (1400cm 2 / Vs), the speed of electrons in graphene can reach 1 / 300 of the speed of light (the speed of light is 300,000 km / s). What is more outstanding is that the electron mobility is basically not affected by temperature.

[0003] In addition, graphene has good compatibility. Through modification, it can meet similar compatibility conditions with the receptor material: the composite of graphene and lubricating oil or hydraulic oil can significantly improve lubricity, extreme pressure resistance and antistatic performance; the composite of graphene and polymer materials such as rubber, ABS, PC, PE can significantly improve strength, toughness and aging resistance, and even increase the electrical conductivity and thermal conductivity of the composite material. However, in the preparation process of graphene composite materials, graphene addition technology has become a bottleneck, which seriously restricts the promotion and application of graphene materials and the industrial development of graphene composite materials. For example, Chinese patent 202020314078.1 discloses a graphene adding and stirring device for preparing floor substrate raw materials, comprising an outer shell, a support arm, a first hydraulic rod, a clamping block, a protective outer cover and a protective inner cover, support arms are installed on both sides of the outer shell, and the first hydraulic rod is installed on the outer side of the support arms on both sides, a translation seat is installed at the telescopic end of the first hydraulic rod and located on the inner side of the support arm, a second hydraulic rod is installed on the inner side of the translation seat, and translation blocks are installed at the telescopic ends of both ends of the second hydraulic rod, and a clamping block is installed on the inner side of the translation block; a protective outer cover is installed on the outer side of the top of the outer shell, and slide grooves are opened inside both ends of the protective outer cover, a servo motor is installed on the top of one end of the protective outer cover, a threaded rod is rotatably installed inside one end of the protective outer cover, the output end of the servo motor is connected to the threaded rod, a guide rod is installed on the inner side of the other end of the protective outer cover, a protective inner cover is slidably installed inside the slide groove, and connecting blocks are installed above both ends of the protective inner cover, and the connecting blocks at both ends are respectively installed on the outside of the threaded rod and the guide rod. Because the surface density of graphene is 0.77 mg / m 2 , the graphene with no more than 10 layers is calculated as 10g / L, and the specific gravity is 2.58×10 -19 g / cm 3 In a saturated atmosphere, graphene powder will float in the air with a slight disturbance. In the process of adding graphene to the receptor material, the actual amount added is often less than the amount lost, and the actual amount added cannot be accurately controlled. On the other hand, excessive concentration of graphene floating in the air will cause environmental pollution, affect human health, and cause short circuits in electrical equipment. More seriously, high-concentration graphene powder may explode when exposed to fire. Therefore, a graphene non-destructive addition device is designed to overcome the technical bottleneck of graphene addition in the preparation process of graphene composite materials and eliminate safety hazards. Summary of the invention:

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art, develop and design a non-destructive adding device for graphene powder, and eliminate the problems of loss, environmental pollution and potential safety hazards in the process of adding graphene powder.

[0005] In order to achieve the above-mentioned purpose, the main structure of the non-destructive addition device of powdered graphene involved in the utility model includes a piston pump and a material cabinet and a filling gun respectively connected thereto;

[0006] Among them, the piston pump is connected to the material cabinet through the suction pipe and connected to the filling gun through the discharge pipe;

[0007] The material cabinet has a sealing cover, a filter and a rocker driven by a motor;

[0008] The main structure of the piston pump includes a piston and an electro-hydraulic push-pull device connected thereto;

[0009] The filling gun has an operating trigger.

[0010] The material cabinet involved in the utility model is arranged on an electronic scale through a weighing plate, connected to a pressure equalizing check valve through a pressure equalizing pipe, and connected to a sealing cover through a hinged shaft;

[0011] The wiggler has a hook;

[0012] The piston is arranged inside the cylinder body and connected to the electro-hydraulic push-pull device arranged outside the cylinder body through a push-pull rod;

[0013] Check valves are provided on both the suction pipe and the discharge pipe, and are both connected to an adjustable constant pressure valve. A pressure gauge is also provided on the discharge pipe.

[0014] The suction pipeline involved in the utility model comprises a material conveying pipe, a suction hose, a suction transition pipe and a suction pipe, wherein the suction transition pipe is connected to an adjustable constant pressure valve through a pressure relief pipe;

[0015] The discharge pipeline comprises a discharge pipe, a discharge transition pipe and a discharge hose, and the discharge pipe is connected with the adjustable constant pressure valve through a conduction pipe.

[0016] The utility model relates to a non-destructive adding device for powdered graphene, and the working principle is as follows: an electro-hydraulic push-pull device drives a piston to reciprocate in a cylinder body through a push-pull rod, when the piston moves upward, a vacuum is formed in the cylinder body and suction is generated, the check valve on the discharge pipe is automatically closed, the check valve on the suction pipe is automatically opened, and the graphene enters the cylinder body through the suction pipe; when the piston moves downward, the check valve on the suction pipe is automatically closed, the check valve on the discharge pipe is automatically opened, and the graphene in the cylinder body enters the discharge pipe, and the continuous reciprocating motion of the piston realizes continuous transportation and addition of graphene.

[0017] The utility model relates to a non-destructive adding device for graphene powder. When used:

[0018] First, the liquid composite receptor material is loaded into the blending (copolymerization) reactor, the bagged graphene is loaded into the material cabinet and the seal is opened, and the weight displayed on the electronic scale is recorded;

[0019] Then, insert the filling gun into the liquid composite receptor material, turn on the power, and start the blending (copolymerization) reactor;

[0020] Finally, pull the control trigger, and the electro-hydraulic push-pull device drives the piston to reciprocate in the cylinder body through the push-pull rod, and the graphene is continuously transferred from the material cabinet through the filling gun and added to the liquid composite receptor material. Observe the weight displayed on the electronic scale. When the expected added weight is reached, stop adding graphene.

[0021] During this process, the pressure equalizing check valve automatically eliminates negative pressure or releases pressure to balance the pressure in the material cabinet.

[0022] Compared with the prior art, the utility model has a main structure made of 304 stainless steel, including a piston pump and a material cabinet and a filling gun respectively connected thereto through a suction pipe and a discharge pipe, the suction pipe and the discharge pipe are both connected to an adjustable constant pressure valve, the sealing cover of the material cabinet is made of silicone material, the hoses in the suction pipe and the discharge pipe are oil-resistant, acid-resistant and alkali-resistant PE high-strength flexible pipes, the electro-hydraulic push-pull device and the motor involved are both 220V general equipment, the continuous and lossless addition of graphene is achieved through the reciprocating motion of the piston in the piston pump, the loss, environmental pollution and safety hazards in the process of graphene addition can be eliminated, and strong support is provided for the large-scale production of graphene composite materials; the utility model has a simple structure, is safe and environmentally friendly, is easy to operate, and the addition amount is controllable, precise and lossless. Description of the drawings:

[0023] Figure 1 It is a schematic diagram of the main structural principle of the utility model. Specific implementation method:

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0025] Embodiment 1:

[0026] The main structure of a non-destructive adding device for graphene powder in this embodiment is as follows: Figure 1 As shown, it includes a material cabinet 1, a material conveying pipe 2, a suction hose 3, a suction transition pipe 4, a suction pipe 5, a piston pump 6, a discharge pipe 7, a discharge transition pipe 8, a discharge hose 9, a filling gun 10, a weighing pan 11, an electronic scale 12, a pressure equalizing pipe 13, a pressure equalizing check valve 14, a sealing cover 15, a filter 16, a hook 17, a rocker 18, a motor 19, a cylinder 20, a piston 21, a push-pull rod 22, an electro-hydraulic push-pull device 23, a control trigger 24, a folding shaft 25, a check valve 26, a pressure relief pipe 27, an adjustable constant pressure valve 28, a transmission pipe 29 and a pressure gauge 30;

[0027] The material cabinet 1 is connected to the piston pump 6 through the material conveying pipe 2, the suction hose 3, the suction transition pipe 4 and the suction pipe 5 in sequence, and the piston pump 6 is connected to the filling gun 10 through the discharge pipe 7, the discharge transition pipe 8 and the discharge hose 9 in sequence;

[0028] The material cabinet 1 is arranged on an electronic scale 12 through a weighing pan 11, connected to a pressure equalizing check valve 14 through a pressure equalizing pipe 13, a sealing cover 15 is arranged on the side, a filter screen 16 is arranged at the lower part inside, and a rocker 18 with a hook 17 is arranged at the upper part, and the rocker 18 is connected to a motor 19 arranged outside the material cabinet 1;

[0029] The main structure of the piston pump 6 includes a cylinder 20, a piston 21, a push-pull rod 22 and an electro-hydraulic push-pull device 23. The piston 21 is arranged inside the cylinder 20, and the piston 21 is connected to the electro-hydraulic push-pull device 23 arranged outside the cylinder 20 through the push-pull rod 22.

[0030] The filling gun 10 has an operating trigger 24 .

[0031] The material cabinet 1 involved in this embodiment is connected to the sealing cover 15 through a hinge shaft 25, and a check valve 26 is arranged between the suction transition pipe 4 and the suction pipe 5 and between the discharge pipe 7 and the discharge transition pipe 8. The suction transition pipe 4 is connected to the adjustable constant pressure valve 28 through a pressure relief pipe 27, and the discharge pipe 7 is connected to the adjustable constant pressure valve 28 through a conduction pipe 29. A pressure gauge 30 is also arranged on the discharge pipe 7.

[0032] Embodiment 2:

[0033] The main structure of a non-destructive addition device for graphene powder involved in this embodiment is the same as that of embodiment 1, and its suction hose 3 and discharge hose 9 are both flexible hoses, which do not affect metering and weighing; the piston pump 6 is used for transporting and adding graphene; the filling gun 10 controls the start and stop of graphene addition; the electronic scale 12 is used to measure the amount of graphene added; the equalizing check valve 14 can balance the air pressure in the material cabinet 1 after the graphene in the material cabinet 1 is discharged. At the same time, when negative pressure is generated in the material cabinet 1, air enters the material cabinet 1 through the equalizing check valve 14 to ensure that the graphene does not overflow; the filter 16 is used to filter debris; the hook 17 is used to hang bagged graphene; the pressure setting value of the adjustable constant pressure valve 28 is 0.2-0.3Kg. By setting the required pressure when adding graphene, constant pressure and stable operation can be guaranteed to avoid excessive filling pressure, which causes volume expansion and blows out the graphene; the pressure gauge 30 is used to monitor the discharge pressure of the piston pump 6.

[0034] Embodiment 3:

[0035] The present embodiment relates to a non-destructive adding device for graphene powder, which, when used:

[0036] First, the liquid composite receptor material is loaded into the blending (copolymerization) reactor, the sealing cover 15 is opened, the bagged graphene is hung upside down on the hook 17, and the seal of the graphene bag is unsealed.

[0037] Close the sealing cover 15, observe the weight displayed by the electronic scale 12, and use the weight as a base to control the amount of graphene added by weight loss method;

[0038] Then, the filling gun 10 is inserted into the liquid composite receptor material to prevent the graphene from drifting, the power is turned on, and the blending (copolymerization) reactor is started to run at a low speed;

[0039] Finally, the control trigger 24 is pulled, and the electro-hydraulic push-pull device 23 drives the piston 21 to move upward in the cylinder 20 through the push-pull rod 22. The motor 19 drives the rocker 18 to drive the graphene bag on the hook 17 to swing, causing the graphene in the bag to fall, and the graphene passes through the filter 17 and the suction pipe into the cylinder 20. When the piston 21 moves downward, the graphene is added to the liquid composite receptor material through the discharge pipe and the filling gun 10. The weight displayed on the electronic scale 12 is observed. When the expected added weight is reached, the control trigger 24 is reset, that is, the power is turned off and the addition of graphene is stopped;

[0040] During this process, the suction force of the piston pump 6 creates negative pressure in the material cabinet 1, and the atmosphere enters the material cabinet 1 through the pressure equalizing check valve 14 and the pressure equalizing pipe 13, eliminating the negative pressure and achieving pressure balance; when the discharge pressure of the piston pump 6 exceeds the set value, the adjustable constant pressure valve 28 automatically opens, and the graphene returns to the suction pipe 5 through the pressure relief pipe 27 to relieve the pressure.

Claims

1. A non-destructive adding device for graphene powder, characterized in that: The main structure includes a piston pump and a material cabinet and a filling gun respectively connected thereto; the material cabinet is arranged on the electronic scale through a weighing plate, connected to the pressure equalizing check valve through a pressure equalizing pipe, and connected to the sealing cover through a folding shaft.

2. A non-destructive adding device for graphene powder according to claim 1, characterized in that: The piston pump is connected to the material cabinet through a suction pipe and is connected to the filling gun through a discharge pipe.

3. A non-destructive adding device for graphene powder according to claim 2, characterized in that: Check valves are provided on both the suction pipe and the discharge pipe, and are both connected to an adjustable constant pressure valve. A pressure gauge is also provided on the discharge pipe.

4. A non-destructive adding device for graphene powder according to any one of claims 1 to 3, characterized in that: The main structure of the piston pump includes a piston and an electro-hydraulic push-pull device connected thereto.

5. A non-destructive adding device for graphene powder according to claim 4, characterized in that: The piston is arranged inside the cylinder body and is connected with an electro-hydraulic push-pull device arranged outside the cylinder body through a push-pull rod.

6. A non-destructive adding device for graphene powder according to claim 4, characterized in that: The material cabinet has a filter and a rocker; the rocker has a hook.

7. The device for non-destructive addition of graphene powder according to claim 4, characterized in that: The filling gun has an operating trigger.

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