Continuous feeding cathode plasma generator

Abstract

The invention discloses a continuous feeding cathode plasma generator. The continuous feeding cathode plasma generator comprises a cathode body, a driving mechanism and an anode, the cathode body comprises a discharge terminal and a plurality of cathode ends which are overlapped with one another, and the cathode ends are detachably connected to the tail part of the discharge terminal; the driving mechanism is mounted on one side of the box body arranged on the plasma generator body; the driving mechanism comprises a driving wheel and a driven wheel which are vertically arranged at an interval, an interval space between the driving wheel and the driven wheel forms a channel for conveying the cathode end, the channel leads to the end position of the box body where the anode is located, the driven wheel downwards presses the cathode end on the driving wheel, the driving wheel rotates, and feeding of the cathode end is achieved through friction force. The cathode end can be directly installed at the rear end of the cathode body, the whole cathode assembly does not need to be disassembled, and direct contact with the front end of the cathode is effectively avoided.

Description

Technical Field

[0001] The invention relates to the technical field of plasma generators, in particular to a continuous feeding cathode plasma generator. Background Art

[0002] A plasma generator is a device used to produce a high-temperature plasma arc. It primarily consists of an anode assembly, a cathode assembly, and a supporting bracket for installation. A stable, high current is applied between the two electrodes, ionizing the air between them to form a high-temperature, conductive plasma. Positively charged ions flow toward the negative electrode of the power source, forming the cathode of the arc, while negatively charged ions and electrons flow toward the positive electrode of the power source, forming the anode of the arc. Compressed air then blows out of the anode, forming a usable high-temperature arc.

[0003] The cathode, as an essential component of the plasma generator, is the component that emits electrons. Currently, the most common cathode manufacturing method is primarily hollow cylindrical, often made of copper, and constructed in an integrated form. Common plasma cathodes are fixedly mounted, secured to the generator bracket via bolts, with the front end of the cathode always maintaining a certain distance from the anode. The cathode is susceptible to erosion and damage due to the impact of current and high temperatures, which can cause arc breakage and cessation of operation during use. The fixed installation of the cathode makes installation and maintenance more complex, often requiring the entire assembly to be disassembled for maintenance and replacement, which is time-consuming and labor-intensive. When the plasma generator is used in harsh environments such as those with radiation, the cathode can become contaminated, posing a safety hazard to the operator when replacing the cathode. Summary of the Invention

[0004] In order to solve the defects in the prior art, the present invention provides a continuous feed cathode plasma generator.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The present invention provides a continuous feed cathode plasma generator, comprising a cathode body, a driving mechanism and an anode;

[0007] The cathode body includes a discharge terminal and a plurality of cathode terminals stacked on top of each other, and the cathode terminals are detachably connected to the tail of the discharge terminal;

[0008] The driving mechanism is installed on one side of a box provided on the plasma generator body;

[0009] The driving mechanism includes a driving wheel and a driven wheel spaced apart in an upper and lower direction. The space between the driving wheel and the driven wheel forms a channel for conveying the cathode end head. The channel leads to the end position of the box where the anode is located. The driven wheel presses the cathode end head down on the driving wheel. The driving wheel rotates and uses friction to realize the feeding of the cathode end head.

[0010] As a preferred technical solution of the present invention, a mounting frame is provided on the box body for installing the driving mechanism. The driving wheel and the driven wheel are rotatably connected to the inner wall of the mounting frame through a connecting shaft. Two groups of driving wheels and driven wheels are provided along the feeding direction of the cathode end head.

[0011] As a preferred technical solution of the present invention, a motor is also installed on the mounting frame, and the output synchronous wheel of the motor is connected to the driving wheel through a synchronous belt, and the adjacent driving wheels are also connected by a belt.

[0012] As a preferred technical solution of the present invention, the connecting shaft of the driven wheel is rotatably connected to the left and right sliders, the sliders can slide in the vertical direction relative to the mounting frame, and springs are installed at the ends of the sliders, which make the driven wheel tend to press down.

[0013] As a preferred technical solution of the present invention, it also includes a return water sleeve and a water inlet sleeve, the water inlet sleeve is embedded in the return water sleeve, and the cooling channel formed by the water inlet sleeve and the return water sleeve is located in the box body for the cathode body to pass through to dissipate heat for the cathode body.

[0014] As a preferred technical solution of the present invention, the cross-sectional area ratio of the water outlet sleeve to the water inlet sleeve is 1.3-1.5.

[0015] As a preferred technical solution of the present invention, a through hole is opened at one end of the box body close to the driving mechanism for the feeding cathode end to pass through, and a mounting flange is installed at the through hole. A sealing ring is tightly installed between the mounting flange and the outer wall of the box body, and the sealing ring is tightly fitted on the cathode body to achieve sealing of the box body.

[0016] As a preferred technical solution of the present invention, it further comprises a carrier air duct, which is mounted on a side of the box body close to the anode through a fixing flange, and the cathode body passes through the middle of the carrier air duct.

[0017] As a preferred technical solution of the present invention, the discharge terminal adopts a cylindrical design, the front end is designed as a cone with a taper angle of 30°, the front end face is designed with an arc-starting hole, and the rear end face is designed with two coaxial holes for connecting to the cathode terminal.

[0018] As a preferred technical solution of the present invention, the cathode terminal is threadedly connected to the discharge terminal, and the driving mechanism further includes a horizontal wheel for driving the cathode terminal to rotate around its own axis, and the horizontal wheel is arranged on a side of the driving mechanism close to the discharge terminal.

[0019] The beneficial effects of the present invention are:

[0020] The present invention uses a driving mechanism at the rear end of the cathode. When the front end of the cathode is ablated and worn, the cathode body can be pushed forward by the driving mechanism. The cathode end heads of the cathode body are continuously stacked using a specific connection method. The cathode end heads can be directly installed through the rear end of the cathode body without the need to disassemble the entire cathode assembly, effectively avoiding direct contact with the front end of the cathode. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 is an axonometric view of the present invention;

[0024] Figure 3 This is a schematic diagram of the driving wheel and the driven wheel conveying state of the present invention;

[0025] Figure 4 It is a schematic diagram of the cathode body structure of the present invention.

[0026] Figure 5 It is a schematic structural diagram of the present invention for driving the cathode terminal to rotate. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0028] Example: Figure 1-2 As shown, it includes a cathode body 3, a driving mechanism 4 and an anode 12;

[0029] The cathode body 3 consists of a discharge terminal 1 and several stacked cathode terminals 2, which are detachably connected to the tail of the discharge terminal 1. The cathode body 3 is entirely made of graphene, with an overall cylindrical roughness no greater than Ra3.2 and a circular run-out no greater than 0.05. The discharge terminal 1 is cylindrical in shape, with a tapered front end at a 30° angle. The front end features an arc-starting hole and the rear end features two coaxial holes for connection to the cathode terminal 2.

[0030] The driving mechanism 4 is mounted on one side of a box 7 provided on the plasma generator body;

[0031] The drive mechanism 4 includes a driving wheel 43 and a driven wheel 41 spaced apart from each other. The space between the driving wheel 43 and the driven wheel 41 forms a channel for conveying the cathode terminal 2. This channel leads to the end of the box 7 where the anode 12 is located. The driven wheel 41 presses the cathode terminal 2 down on the driving wheel 43. The driving wheel 43 rotates, using friction to feed the cathode terminal 2. A mounting frame 47 is provided on the box 7 for mounting the drive mechanism. The driving wheel 43 and the driven wheel 41 are both rotatably connected to the inner wall of the mounting frame 47 via a connecting shaft.

[0032] Two sets of driving wheels 43 and driven wheels 41 are provided along the feeding direction of the cathode terminal 2. The connecting shaft of the driven wheel 41 is rotatably connected to the left and right sliders. The sliders can slide vertically relative to the mounting frame 47. The ends of the sliders are installed with springs 42, which make the driven wheel 41 have a downward pressure tendency. Figure 3 As shown, the driving wheel 43 and the driven wheel 41 are both friction wheel structures, and are concave in the middle to match the cylindrical cathode body 3.

[0033] A motor 46 is also mounted on the mounting frame 47 . The output synchronous wheel 45 of the motor 46 is connected to the driving wheel 43 via a synchronous belt 44 . The adjacent driving wheels 43 are also connected via a belt.

[0034] A material box 13 is provided on the front side of the mounting frame 41 , and the material box 13 can be replenished with cathode terminals 2 .

[0035] The housing 7 further includes a water return sleeve 8 and a water inlet sleeve 9. The water inlet sleeve 9 is embedded in the water return sleeve 8. The cooling channel formed by the water inlet sleeve 9 and the water return sleeve 8 is located in the housing 7, through which the cathode body 3 passes to dissipate heat from the cathode body 3. The cross-sectional area ratio of the water outlet sleeve 9 to the water inlet sleeve 8 is 1.3-1.5.

[0036] A through hole is opened at one end of the box body 7 close to the driving mechanism 4 for the feeding cathode terminal 2 to pass through, and a mounting flange 5 is installed at the through hole. A sealing ring 6 is tightly installed between the mounting flange 7 and the outer wall of the box body 7. The sealing ring 6 is tightly fitted on the cathode body 3 to achieve sealing of the box body 7.

[0037] The housing 7 further comprises a carrier air duct 11, which is mounted on a side of the housing 7 close to the anode 12 via a fixing flange 10. The cathode body 3 passes through the middle of the carrier air duct 11.

[0038] The anode 12 adopts a two-way bell-mouth design and is made of copper material, one side of which is 3.5-5 mm away from the cathode body.

[0039] In application, the return pipe flow rate is above 4m / min, which can effectively take away heat, dissipate heat for the cathode body 3, and effectively extend the combustion time of the cathode body. The cathode body assembly is placed in the middle of the carrier air duct, and the distance between the power generation terminal 1 and the anode 12 is maintained at 3.5-5mm. When the plasma generator is energized, an arc is generated between the power generation terminal 1 and the anode 12, and the carrier air duct 11 ejects the arc forward through the anode 12 to form a bright white flame. The anode 12 adopts a two-way bell-mouth design, which effectively increases the stability of the arc output.

[0040] It is worth mentioning that there are two forms of connection between the cathode terminal 2 and the discharge terminal 1. One is to open two coaxial step holes at the tail of the discharge terminal 1, and set a matching protrusion at the front end of the cathode terminal 2. The same hole is also set at the tail of the cathode terminal 2 to achieve docking, thereby realizing the connection between the cathode terminal 2 and the discharge terminal 1, as well as the connection between adjacent cathode terminals 2. The other is to adopt a threaded connection method, in which threaded holes are opened at the tail of the cathode terminal 2 and the discharge terminal 1, and a matching threaded protrusion is set at the front end of the cathode terminal 2. During the transportation process, a rotational force needs to be applied to the cathode terminal 2 to achieve the tightening connection of the thread. Figure 5 As shown, the drive mechanism 4 further includes a horizontal wheel 48 for driving the cathode terminal 2 to rotate about its own axis. The horizontal wheel is driven by a motor 49 and is disposed on the side of the drive mechanism 4 close to the discharge terminal 1. Two sets of horizontal wheels 48 can also be provided, one above the other, to clamp the cathode terminal 2 in the middle to drive the rotation.

[0041] Overall, the present invention continuously pushes the cathode toward the anode during combustion, eliminating arc interruption and operational cessation caused by discharge tip erosion, and ensuring long-term, stable combustion of the plasma generator. By directly attaching the cathode tip to the rear end of the cathode body, the entire cathode does not need to be removed, simplifying operation. Direct contact with the power generation tip is avoided, allowing the plasma generator to be used in easily contaminated environments, significantly reducing both environmental and operational risks.

[0042] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A continuous feed cathode plasma generator, characterized in that It comprises a cathode body (3), a driving mechanism (4) and an anode (12); The cathode body (3) comprises a discharge terminal (1) and a plurality of cathode terminals (2) stacked on top of each other, wherein the cathode terminals (2) are detachably connected to the tail of the discharge terminal (1); The driving mechanism (4) is installed on one side of a box (7) provided on the plasma generator body; The driving mechanism (4) includes a driving wheel (43) and a driven wheel (41) arranged at an interval above and below. The space between the driving wheel (43) and the driven wheel (41) forms a channel for conveying the cathode terminal (2). The channel leads to the end position of the box (7) where the anode (12) is located. The driven wheel (41) presses the cathode terminal (2) down onto the driving wheel (43). The driving wheel (43) rotates, and the cathode terminal (2) is fed by friction.

2. A continuous feed cathode plasma generator according to claim 1, characterized in that: A mounting frame (47) is provided on the box body (7) for mounting a driving mechanism. The driving wheel (43) and the driven wheel (41) are both rotatably connected to the inner wall of the mounting frame (47) via a connecting shaft. Two groups of the driving wheel (43) and the driven wheel (41) are provided along the feeding direction of the cathode terminal (2).

3. A continuous feed cathode plasma generator according to claim 2, characterized in that: A motor (46) is also mounted on the mounting frame (47). The output synchronous wheel (45) of the motor (46) is connected to the driving wheel (43) through a synchronous belt (44). Adjacent driving wheels (43) are also connected in transmission via a belt.

4. A continuous feed cathode plasma generator according to claim 1, characterized in that: The connecting shaft of the driven wheel (41) is rotatably connected to the left and right sliders. The sliders can slide in the vertical direction relative to the mounting frame (47). The ends of the sliders are provided with springs (42) which make the driven wheel (41) have a downward pressing tendency.

5. A continuous feed cathode plasma generator according to claim 1, characterized in that: It also includes a water return sleeve (8) and a water inlet sleeve (9), wherein the water inlet sleeve (9) is embedded in the water return sleeve (8), and a cooling channel formed by the water inlet sleeve (9) and the water return sleeve (8) is located in the box body (7) for the cathode body (3) to pass through, thereby dissipating heat for the cathode body (3).

6. A continuous feed cathode plasma generator according to claim 5, characterized in that: The cross-sectional area ratio of the water outlet sleeve (9) to the water inlet sleeve (8) is 1.3-1.

5.

7. A continuous feed cathode plasma generator according to claim 1, characterized in that: A through hole is provided at one end of the box body (7) close to the driving mechanism (4) for the cathode terminal (2) to pass through. A mounting flange (5) is installed at the through hole. A sealing ring (6) is tightly installed between the mounting flange (7) and the outer wall of the box body (7). The sealing ring (6) is tightly fitted on the cathode body (3) to achieve sealing of the box body (7).

8. A continuous feed cathode plasma generator according to claim 1, characterized in that: The invention also comprises a carrier air duct (11), which is installed on a side of the box body (7) close to the anode (12) through a fixing flange (10). The cathode body (3) passes through the middle of the carrier air duct (11).

9. A continuous feed cathode plasma generator according to claim 1, characterized in that: The discharge terminal (1) is designed as a cylindrical shape, with a front end designed as a conical surface with a taper angle of 30 degrees, an arc-starting hole designed on the front end face, and two coaxial holes designed on the rear end face for connection with the cathode terminal (2).

10. A continuous feed cathode plasma generator according to claim 9, characterized in that: The cathode terminal (2) is threadedly connected to the discharge terminal (1). The driving mechanism (4) further comprises a horizontal wheel (48) for driving the cathode terminal (2) to rotate around its own axis. The horizontal wheel (48) is arranged on a side of the driving mechanism (4) close to the discharge terminal (1).

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