Rotary vacuum plasma cleaning device for particle powder treatment

Abstract

The utility model provides a rotary vacuum plasma cleaning device for particle powder treatment, which comprises an outer cylinder with a hollow inner cavity, a roller rotatably connected with the outer cylinder is coaxially arranged in the inner cavity of the outer cylinder, and the inner cavity of the roller is hollow. Particle powder needing to be subjected to plasma treatment is contained in the inner cavity of the roller, process gas enters the inner cavity of the cylindrical electrode through the gas inlet pipe and is sprayed out through the exhaust holes so as to evenly enter the roller, the cylindrical electrode and the inner cavity of the roller form a discharge area, and the process gas generates plasma. The plasma is in contact with the powder to process the powder, when the roller rotates, the inclined rolling strip is arranged, the rolling strip can conveniently drive the powder to move to the upper portion of an inner cavity of the roller to be scattered, so that the powder can be fully raised, and the through holes are formed in the rolling strip, so that the powder at the bottom flows well and makes full contact with the plasma; and the powder plasma treatment uniformity is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plasma cleaning, in particular to a rotary vacuum plasma cleaning device for treating particulate powders. Background Art

[0002] A plasma cleaning device is a device that uses the active components in the plasma to treat the surface of a product, so as to achieve purposes such as cleaning, modification, or coating.

[0003] At present, the mainstream vacuum plasma cleaning equipment on the market generally has multiple layers of parallel horizontal electrodes or vertical electrodes in a vacuum chamber. The product to be treated is placed between the electrodes, and plasma is generated by discharging between the two parallel electrodes to treat the surface of the product. Although this method is suitable for treating most conventional products on the market, it is inconvenient to treat particulate or powdery materials and the treatment effect is uneven.

[0004] A drum-type plasma cleaning device disclosed in a Chinese patent with the reference publication number CN219052317U, by arranging a drum and electrode components in a vacuum chamber, and the electrode components extend into the drum, so that the particulate or powdery materials in the drum can be cleaned during the rotation process, improving the treatment effect on the particulate or powdery materials.

[0005] However, this patent has the problem that the powder in the drum cannot be fully lifted with the rotation of the drum due to gravity and come into contact with the plasma, and a good treatment uniformity cannot be achieved. Summary of the Invention

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a rotary vacuum plasma cleaning device for treating particulate powders, an outer cylinder with a hollow inner cavity, a drum rotatably connected to the outer cylinder is coaxially arranged in the inner cavity of the outer cylinder, the inner cavity of the drum is hollow, a plurality of inclined tumbling bars are integrally formed on the inner cavity wall of the drum, and a plurality of uniformly arranged through holes are penetrated through each of the tumbling bars. A cylindrical electrode is fixed on the outer cylinder, the cylindrical electrode enters the inner cavity of the drum, the inner cavity of the cylindrical electrode is hollow, and a plurality of exhaust holes communicating the inner cavity of the drum with the inner cavity of the cylindrical electrode are opened on the cylindrical electrode. An air inlet pipe communicating with the inner cavity of the cylindrical electrode is arranged on the outer cylinder.

[0007] To achieve the above object, the inner cavity of the drum accommodates the powder to be subjected to plasma treatment. The process gas enters the inner cavity of the cylindrical electrode through the intake pipe and is ejected through a plurality of exhaust holes to uniformly enter the inside of the drum. The cylindrical electrode and the inner cavity of the drum form a discharge area, and the process gas generates plasma. The plasma contacts the powder to process the powder. When the drum rotates, by setting inclined tumbling bars, it is convenient for the tumbling bars to drive the powder to move to the upper part of the inner cavity of the drum and scatter, so as to fully lift the powder. By opening a plurality of through holes in the tumbling bars, the powder at the bottom has good fluidity, is in full contact with the plasma, and improves the uniformity of powder plasma treatment.

[0008] Further, the cylindrical electrode is eccentrically fixed on the outer cylinder. A circular hole is opened at one end of the drum, and a connecting plate for closing the circular hole is rotatably connected to the end of the drum. The connecting plate is located inside the drum cavity. An installation block adapted to the circular hole is integrated on the connecting plate. The installation block extends out of the drum through the circular hole. An extension block is fixed to the part of the installation block extending out of the drum. Slots communicating with the inner cavity of the drum are eccentrically penetrated through the installation block, the extension block and the connecting plate. The cylindrical electrode passes through the installation block, the extension block and the connecting plate in sequence through the slots and enters the inner cavity of the drum.

[0009] Through the above technical solution, the cylindrical electrode is eccentrically connected to the drum, effectively utilizing the volume of the drum, making it simpler and faster to add powder, and enabling the material to be more comprehensively mixed. The cylindrical electrode is fixed to the installation block, the extension block and the connecting plate. The outer cylinder, the extension block, the installation block and the connecting plate support the cylindrical electrode. The installation block, the extension block and the connecting plate are rotatably connected to the drum. Therefore, the rotation of the drum does not affect the cylindrical electrode.

[0010] Further, a driving assembly for controlling the rotation of the drum to improve the separation plasma treatment efficiency is provided on the outer cylinder.

[0011] Through the above technical solution, power is provided by the driving assembly to drive the roller to rotate without affecting the cylindrical electrode.

[0012] Further, the driving assembly includes an annular driven gear nested outside the extension block and rotatably connected to the extension block. The annular driven gear is coaxially fixed to the drum. A driving gear is rotatably connected to the outer cylinder and is located between the outer cylinder and the drum. The driving gear meshes with the annular driven gear. A motor for driving the driving gear to rotate is fixed to the outer cylinder.

[0013] Through the above technical solution, power is provided by the motor to drive the driving gear to rotate. The driving gear and the annular driven gear cooperate to transmit power, causing the drum coaxially fixed to the annular driven gear to rotate, driving the powder in the inner cavity of the drum to tumble, and improving the uniformity of powder plasma treatment.

[0014] Furthermore, an air extraction hole communicating with the inner cavity of the outer tube is provided at the end of the outer tube.

[0015] Through the above technical solution, by providing the air extraction hole, the gas in the inner cavity of the outer tube can be easily discharged through the air extraction hole.

[0016] Furthermore, a frame is arranged outside the outer cylinder, the frame is rotatably connected to the outer cylinder, and an adjustment component for controlling the inclination of the outer cylinder to improve the uniformity of powder mixing is arranged on the frame.

[0017] Through the above technical solution, the power is provided by adjusting the components to drive the outer cylinder to rotate, so as to improve the uniformity of powder mixing.

[0018] Furthermore, the adjustment assembly includes a cylinder hingedly connected to the bottom of the frame, and an extended end of the cylinder is hingedly connected to the outer side wall of the outer tube.

[0019] Through the above technical solution, the cylinder provides power to drive the outer cylinder to rotate.

[0020] In summary, the rotary vacuum plasma cleaning device for particle powder processing has the following beneficial effects:

[0021] The rotary vacuum plasma cleaning device for particle powder processing has a drum cavity containing powder to be subjected to plasma processing, a process gas enters the cylindrical electrode cavity through an air inlet pipe, and is ejected through a plurality of exhaust holes to uniformly enter the drum, the cylindrical electrode and the drum cavity form a discharge area, the process gas generates plasma, and the plasma contacts the powder to process the powder, and when the drum rotates, an inclined tumbling bar is provided to facilitate the tumbling bar to drive the powder to move to the upper part of the drum cavity for scattering, so as to fully lift the powder, and a plurality of through holes are provided on the tumbling bar to allow the bottom powder to have good flow and fully contact with the plasma, thereby improving the uniformity of the powder plasma processing.

[0022] The rotary vacuum plasma cleaning device for particle powder processing has a cylindrical electrode eccentrically connected to a drum, which realizes effective use of the volume of the drum, makes adding powder simpler and faster, and enables materials to be mixed more comprehensively.

[0023] The rotary vacuum plasma cleaning device for particle powder processing provides power through the cylinder to drive the outer cylinder to rotate, thereby further improving the powder mixing uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model is further described and elaborated below in conjunction with the accompanying drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the preferred embodiment of the utility model;

[0026] Figure 2 It is a schematic rear view structure diagram of the present utility model;

[0027] Figure 3 It is a schematic structure diagram of the present utility model for embodying the drum;

[0028] Figure 4 It is a schematic structure diagram of the present utility model for embodying the annular driven gear;

[0029] Figure 5 It is a schematic structure diagram of the present utility model for embodying the tumbling bar.

[0030] Reference numerals: 1, drum; 2, tumbling bar; 201, through hole; 3, outer cylinder; 4, sealing door; 5, cylindrical electrode; 6, circular hole; 7, connecting plate; 8, mounting block; 9, extension block; 10, slot; 11, annular driven gear; 12, driving gear; 13, motor; 14, air extraction hole; 15, frame; 16, cylinder. Detailed implementation manners

[0031] Next, the technical solution of the present utility model will be described more clearly and completely in conjunction with the drawings and through the description of the preferred implementation manners of the present utility model.

[0032] As Figures 1-5 shown, a rotary vacuum plasma cleaning device for particle powder treatment in a preferred implementation manner of the present utility model includes a drum 1 with a hollow inner cavity and an opening on one side. The inner cavity of the drum 1 is used to accommodate the particle powder to be subjected to plasma treatment. A cover door for closing the opening part of the drum 1 is hingedly connected to the opening end of the drum 1. When the cover door is closed, the opening part of the drum 1 is closed, reducing the possibility of overflow during the powder tumbling process. When the cover door is opened, it is convenient to send the powder into the inner cavity of the drum 1.

[0033] As Figure 5 , in order to make the powder fully lifted as the drum 1 rotates, several tumbling bars 2 arranged obliquely are integrally formed on the inner cavity groove wall of the drum 1. The several tumbling bars 2 are in a sheet structure and are arranged in an array. A plurality of uniformly arranged through holes 201 penetrate through each tumbling bar 2. By setting the inclined tumbling bars 2, it is convenient for the tumbling bars 2 to drive the powder material to move to the upper part of the inner cavity of the drum 1 and scatter. By opening a plurality of through holes 201 on the tumbling bars 2, it is convenient to fully lift the powder, enabling good flow of the bottom powder material, making full contact with the plasma, and improving the uniformity of powder plasma treatment.

[0034] As Figure 1 and Figure 5, a cylindrical electrode 5 is eccentrically fixed to the other end. An outer cylinder 3 with a hollow inner cavity and an open side is sleeved outside the drum 1 and is rotatably connected to the drum 1. The center line of the outer cylinder 3 coincides with the center line of the drum 1. A sealing door 4 for closing the open part of the outer cylinder 3 is hinged to one end of the outer cylinder 3.

[0035] As Figure 1 and Figure 3 and Figure 4 and Figure 5 , a circular hole 6 communicating with the inner cavity of the drum 1 is provided at one end of the drum 1 away from the cover door. A connecting plate 7 for closing the circular hole 6 is rotatably connected to the end of the drum 1. The connecting plate 7 is located inside the drum 1. An installation block 8 adapted to the circular hole 6 is integrated on the connecting plate 7. The installation block 8 extends out of the drum 1 through the circular hole 6. An extension block 9 is fixed to the part of the installation block 8 extending out of the drum 1. The installation block 8, the extension block 9, and the connecting plate 7 have the same outer diameter, and the center lines of the installation block 8, the extension block 9, the connecting plate 7, and the drum 1 coincide. Slots 10 communicating with the inner cavity of the drum 1 are eccentrically penetrated through the installation block 8, the extension block 9, and the connecting plate 7. The cylindrical electrode 5 is adapted to the slots 10. The cylindrical electrode 5 passes through the installation block 8, the extension block 9, and the connecting plate 7 in sequence through the slots 10 and enters the inner cavity of the drum 1. A protective sleeve for closing the gap between the installation block 8, the extension block 9, the connecting plate 7 and the cylindrical electrode 5 is nested outside the cylindrical electrode 5. The installation block 8 and the extension block 9 are located in the gap between the outer cylinder 3 and the inner cavity, and one end of the extension block 9 away from the installation block 8 is fixed to the inner cavity of the outer cylinder 3.

[0036] As Figure 1 and Figure 3 and Figure 4 and Figure 5 , the cylindrical electrode 5 is eccentrically connected to the drum 1, realizing the effective utilization of the volume of the drum 1, making it easier and faster to add powder, and enabling the materials to be more comprehensively mixed. The extension block 9, the installation block 8, and the connecting plate 7 close the circular hole 6, reducing the possibility of powder overflowing from the circular hole 6. The cylindrical electrode 5 is fixed to the installation block 8, the extension block 9, and the connecting plate 7, and the installation block 8, the extension block 9, and the connecting plate 7 are rotatably connected to the drum 1. Therefore, the rotation of the drum 1 does not affect the cylindrical electrode 5.

[0037] As Figure 2 , the inner cavity of the cylindrical electrode 5 is hollow. A number of exhaust holes communicating with the inner cavity of the drum 1 are provided on the cylindrical electrode 5. An air inlet pipe communicating with the inner cavity of the cylindrical electrode 5 is provided on the outer cylinder 3. The air inlet pipe can spray one or more process gases such as argon, helium, hydrogen, oxygen, nitrogen, and carbon tetrafluoride into the inner cavity of the cylindrical electrode 5, and the process gases are ejected through the number of exhaust holes to uniformly enter the inside of the drum 1. A discharge area is formed between the cylindrical electrode 5 and the inner cavity of the drum 1. The process gases generate plasma, and the plasma contacts the powder to process the powder. The cooperation of the cylindrical electrode 5 and the process gases is a prior art, so no more details will be described here.

[0038] As Figure 2 and Figure 3 and Figure 4 On the outer cylinder 3, there is a driving assembly for controlling the rotation of the drum 1 to improve the separation plasma treatment efficiency. The driving assembly includes an annular driven gear 11 nested outside the extension block 9 and rotatably connected to the extension block 9. The annular driven gear 11 is coaxially fixed with the drum 1. On the outer cylinder 3, a driving gear 12 is rotatably connected between the outer cylinder 3 and the drum 1. The driving gear 12 meshes with the annular driven gear 11, and a motor 13 for driving the driving gear 12 to rotate is fixed on the outer cylinder 3.

[0039] As Figure 2 and Figure 3 and Figure 4 Power is provided by the motor 13 to drive the driving gear 12 to rotate. The driving gear 12 and the annular driven gear 11 cooperate to transmit power, so that the drum 1 coaxially fixed with the annular driven gear 11 rotates, driving the powder in the inner cavity of the drum 1 to tumble, improving the uniformity of powder plasma treatment.

[0040] As Figure 2 and Figure 3 and Figure 4 An air extraction hole 14 communicating with the inner cavity of the outer cylinder 3 is opened at the end of the outer cylinder 3. The air extraction hole 14 is communicated with the air inlet hole of the vacuum pump through a pipeline. Power is provided by the vacuum pump to extract the air in the outer cylinder 3 and evacuate the inner cavity of the outer cylinder 3.

[0041] As Figure 1 and Figure 2 It further includes a frame 15 for supporting the outer cylinder 3. The frame 15 is rotatably connected to the middle position of the outer side wall of the outer cylinder 3. The bottom of the frame 15 is movably connected with a cylinder 16. The extending end of the cylinder 16 is hinged to the outer side wall of the outer cylinder 3. The frame 15 supports the outer cylinder 3. Power is provided by the cylinder 16 to drive the outer cylinder 3 hinged to the extending end of the cylinder 16 to rotate, further improving the plasma treatment efficiency.

[0042] During use, connect the power supply, turn on the switch, open the sealing door 4 to expose the drum 1, then open the cover door to expose the inner cavity of the drum 1. Feed the powder to be subjected to plasma treatment into the inner cavity of the drum 1, then close the cover door to seal the inner cavity of the drum 1, and close the sealing door 4 to seal the outer cylinder 3;

[0043] Turn on the vacuum pump, and the gas in the inner cavity of the outer cylinder 3 is discharged from the outer cylinder 3 through the air extraction hole 14. When the vacuum degree in the inner cavity of the outer cylinder 3 reaches the set value, turn on the motor 13. The motor 13 provides power to drive the rotation of the driving gear 12 fixedly arranged coaxially with the output shaft of the motor 13. The rotation of the driving gear 12 drives the rotation of the annular driven gear 11 meshed with the driving gear 12, and further makes the drum 1 fixedly arranged coaxially with the annular driven gear 11 rotate. The rotation of the drum 1 drives the powder in the inner cavity of the drum 1 to tumble. By arranging the inclined tumbling bars 2, it is convenient for the tumbling bars 2 to drive the powder to move to the upper part of the inner cavity of the drum 1 and scatter, so as to fully lift the powder. By arranging a plurality of through holes 201 on the tumbling bars 2, the powder at the bottom has good fluidity and is in full contact with the plasma, improving the uniformity of powder plasma treatment;

[0044] At the same time, the process gas enters the inner cavity of the cylindrical electrode 5 through the air inlet pipe and evenly enters the inside of the drum 1 through the exhaust holes. The cylindrical electrode 5 and the inner cavity of the drum 1 form a discharge area, and the process gas generates plasma, and the plasma contacts the powder to process the powder.

[0045] Turn on the cylinder 16. The cylinder 16 provides power to drive the outer cylinder 3 to rotate and tilt, further improving the uniformity of powder plasma treatment.

[0046] The above specific embodiments only describe the preferred embodiments of the present invention, rather than limiting the protection scope of the present invention. Without departing from the design concept and spirit scope of the present invention, various deformations, substitutions and improvements made by those of ordinary skill in the art to the technical solutions of the present invention according to the text description and drawings provided by the present invention shall all fall within the protection scope of the present invention. The protection scope of the present invention is determined by the claims.

Claims

1. A rotary vacuum plasma cleaning device for particle powder processing, characterized in that: The invention comprises an outer cylinder (3) with a hollow inner cavity, wherein a roller (1) is coaxially arranged in the inner cavity of the outer cylinder (3) and is rotatably connected to the outer cylinder (3), wherein the inner cavity of the roller (1) is hollow, and the inner cavity groove wall of the roller (1) is integrated with a plurality of inclined rolling strips (2), and each of the rolling strips (2) is penetrated by a plurality of evenly arranged through holes (201), wherein a cylindrical electrode (5) is fixed on the outer cylinder (3), wherein the cylindrical electrode (5) enters the inner cavity of the roller (1), wherein the inner cavity of the cylindrical electrode (5) is hollow, and wherein a plurality of exhaust holes are provided on the cylindrical electrode (5) and are connected to the inner cavity of the roller (1) and the inner cavity of the cylindrical electrode (5), and wherein an air inlet pipe connected to the inner cavity of the cylindrical electrode (5) is provided on the outer cylinder (3).

2. A rotary vacuum plasma cleaning device for particle powder processing according to claim 1, characterized in that: The cylindrical electrode (5) is eccentrically fixed on the outer cylinder (3); a circular hole (6) is formed at one end of the drum (1); a connecting plate (7) which closes the circular hole (6) is rotatably connected to the end of the drum (1); the connecting plate (7) is located in the inner cavity of the drum (1); a mounting block (8) adapted to the circular hole (6) is integrated on the connecting plate (7); the mounting block (8) extends out of the drum (1) through the circular hole (6); an extension block (9) is fixed to the portion of the mounting block (8) extending out of the drum (1); a slot (10) which is eccentrically penetrated through the mounting block (8), the extension block (9) and the connecting plate (7) and which is connected to the inner cavity of the drum (1); the cylindrical electrode (5) passes through the mounting block (8), the extension block (9) and the connecting plate (7) in sequence through the slot (10) and enters the inner cavity of the drum (1).

3. A rotary vacuum plasma cleaning device for particle powder processing according to claim 2, characterized in that: The outer cylinder (3) is provided with a driving component for controlling the rotation of the drum (1) to improve the separation plasma processing efficiency.

4. A rotary vacuum plasma cleaning device for particle powder processing according to claim 3, characterized in that: The driving assembly comprises an annular driven gear (11) nested outside the extension block (9) and rotatably connected to the extension block (9); the annular driven gear (11) is coaxially fixed to the roller (1); a driving gear (12) located between the outer cylinder (3) and the roller (1) is rotatably connected to the outer cylinder (3); the driving gear (12) is meshed with the annular driven gear (11); and a motor (13) is fixed to the outer cylinder (3) for driving the driving gear (12) to rotate.

5. The rotary vacuum plasma cleaning device for particle powder processing according to claim 1, characterized in that: An air extraction hole (14) communicating with the inner cavity of the outer cylinder (3) is provided at the end of the outer cylinder (3).

6. The rotary vacuum plasma cleaning device for particle powder processing according to claim 1, characterized in that: A frame (15) is arranged outside the outer cylinder (3), the frame (15) is rotatably connected to the outer cylinder (3), and an adjustment component for controlling the inclination of the outer cylinder (3) to improve the uniformity of powder mixing is arranged on the frame (15).

7. A rotary vacuum plasma cleaning device for particle powder processing according to claim 6, characterized in that: The adjustment assembly comprises a cylinder (16) hingedly connected to the bottom of the frame (15), and an extended end of the cylinder (16) is hingedly connected to the outer side wall of the outer cylinder (3).

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