Plasma cleaning head

Abstract

The utility model discloses a plasma cleaning head which comprises an electrode body, a mounting seat, an upper sheath, a lower sheath and a nozzle. The mounting seat, the upper sheath, the lower sheath and the nozzle are sequentially arranged from top to bottom. A high-voltage wire wiring groove and an electrode fixing groove are formed in the upper side and the lower side of the upper sheath towards the interior of the upper sheath, a plurality of air inlet holes and a through air flowing channel are formed in the upper sheath and the lower sheath in the height direction respectively, the air inlet holes are communicated with the air flowing channel, one end of the electrode body is located in the electrode fixing groove, and the other end of the electrode body is located in the electrode fixing groove. One end of the electrode body is connected with a high-voltage line, the other end of the electrode body can extend and penetrate through the gas flowing channel, the electrode body is sleeved with a quartz tube from bottom to top, and a gas inlet gap for gas in the gas inlet hole to flow and penetrate through is reserved between the quartz tube and the gas flowing channel, so that the gas is ionized after the electrode body is electrified. The plasma cleaning device can spray out low-temperature plasma gas to meet the cleaning requirement of products which are not resistant to high temperature, and is simple and convenient in structure and higher in applicability.

Description

Technical Field

[0001] This utility model relates to the field of plasma cleaning technology, and in particular to a plasma cleaning head. Background Technology

[0002] Plasma cleaners, also known as plasma surface treatment machines, are a new high-tech technology that uses plasma to achieve effects that conventional cleaning methods cannot. Plasma is a state of matter, also called the fourth state of matter, and does not belong to the common solid, liquid, and gas states. Applying sufficient energy to a gas to ionize it creates a plasma state. The "active" components of plasma include: ions, electrons, atoms, active groups, excited-state nuclides (metastable states), photons, etc. Plasma cleaners utilize the properties of these active components to treat sample surfaces, thereby achieving cleaning, coating, and other purposes.

[0003] However, some products, such as plastic products, are not resistant to high temperatures and can easily be damaged by conventional plasma cleaners. Therefore, a plasma cleaning head needs to be designed to solve this problem. Utility Model Content

[0004] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a plasma cleaning head that can spray low-temperature plasma gas to meet the cleaning needs of products that are not resistant to high temperatures. It has a simple structure and is more applicable.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a plasma cleaning head, comprising an electrode body and a mounting base, an upper sheath, a lower sheath, and a nozzle arranged sequentially from top to bottom; the upper sheath has a high-voltage wire connection groove and an electrode fixing groove on its upper and lower sides facing inward; the upper and lower sheaths are respectively provided with a plurality of air inlets and a through gas flow channel along the height direction; the air inlets and the gas flow channel are connected; one end of the electrode body is located in the electrode fixing groove and its end is connected to the high-voltage wire, and the other end can extend through the gas flow channel; a quartz tube is sleeved on the electrode body from bottom to top; an air inlet gap is left between the quartz tube and the gas flow channel to allow the gas in the air inlet to flow through, so that the electrode body ionizes the gas after being energized.

[0006] Furthermore, the quartz tube has a U-shaped cross-section along its height, and its upper surface is flush with one end of the electrode body. Specifically, the top of the quartz tube is open to allow the electrode body to be inserted into it, and the quartz tube completely covers the circumference and bottom of the electrode body, ensuring the insulation of the electrode body.

[0007] Furthermore, the bottom of the high-voltage wire connection groove is connected to the top of the electrode fixing groove through a threaded connection hole, so as to screw one end of the electrode body into the upper sheath. A threaded hole is provided on the top of the electrode body. During installation, the screw is screwed through the connection hole and threaded into the threaded hole on the electrode body, facilitating the installation and replacement of the electrode body and ensuring that the electrode body will not detach from the upper sheath during long-term use, thus guaranteeing the cleaning efficiency of the plasma cleaning head.

[0008] Furthermore, the mounting base has a through-hole groove in its center, and the upper surface of the upper sheath has an inwardly recessed groove. A clearance space is formed between the upper surface of the groove and the lower surface of the clearance groove. The clearance groove facilitates the connection between the high-voltage line and the gas supply mechanism, and the clearance space allows workers to easily install the high-voltage line into the high-voltage line wiring groove, or connect the gas supply pipe on the gas supply mechanism to the air inlet.

[0009] Furthermore, a gas equalization groove is formed at the top of the lower sheath, and this groove covers all the air inlets. A gas equalization chamber is formed between the bottom of the groove and the lower surface of the upper sheath. Gas from all the air inlets can only enter the gas equalization groove, where it mixes evenly before diffusing into the gas flow channel. This gas equalization groove ensures, on the one hand, that gas enters the gas flow channel evenly, and that the plasma gas subsequently ejected from the nozzle is uniform throughout; on the other hand, it also serves to store the gas entering from the air inlets.

[0010] Furthermore, the nozzle has a through gas outlet at its bottom and a gas equalization groove (II) recessed at its top. A gas equalization chamber (II) is formed between the bottom of the gas equalization groove and the bottom of the lower sheath to accommodate the plasma gas. The gas, after being ionized by the electrode body, is finally ejected from the gas outlet, thereby cleaning the product.

[0011] Furthermore, a funnel-shaped groove concentric with the gas outlet is formed in the middle of the gas equalization chamber II. The upper surface of the groove II is a support slope that supports the quartz tube, and several gas passages are arrayed on the support slope.

[0012] Furthermore, the mounting base and the upper sheath, as well as the upper sheath and the lower sheath, are connected by screws. The inner wall of the nozzle is provided with an internal thread that matches the external thread on the outer periphery of the bottom of the lower sheath. The mounting base, the upper sheath, and the lower sheath are detachably connected to each other by screws, facilitating the disassembly and installation of the plasma cleaning head as a whole. This allows operators to promptly maintain and replace the electrode body and quartz tube inside the plasma cleaning head. The nozzle is also detachably connected, facilitating timely cleaning of the nozzle's interior.

[0013] The beneficial effects of this utility model are:

[0014] In this invention, the upper sheath, lower sheath, nozzle, electrode body, and quartz tube work together. The quartz tube is fitted onto the electrode body from bottom to top. When clean gas passes through the outer wall of the quartz tube, the electrode body can ionize the gas to form plasma gas. The spacing of the quartz tubes makes the distance between the gas and the electrode body greater, thus the temperature of the ejected plasma gas is lower, which can meet the cleaning needs of products that are not resistant to high temperatures. The structure is simple and has higher applicability. Attached Figure Description

[0015] Figure 1 This is an axonometric view of the overall structure of an embodiment of the present invention;

[0016] Figure 2 This is a schematic cross-sectional view of the overall structure of an embodiment of the present utility model;

[0017] Figure 3 This is an isometric view of the overall nozzle structure according to an embodiment of the present invention;

[0018] Figure 4 This is an axonometric view of the overall structure of an embodiment of the present invention;

[0019] In the diagram: 1. Upper sheath; 2. Lower sheath; 3. Electrode body; 4. Quartz tube; 5. Nozzle; 6. Mounting base; 7. Clearance groove; 8. Clearance space; 9. Air inlet; 10. High-voltage wire connection groove; 11. Electrode fixing groove; 12. Gas flow channel; 13. Uniform gas chamber one; 14. Uniform gas chamber two; 15. Gas outlet; 16. Gas passage; 17. Support slope. Detailed Implementation

[0020] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0021] See appendix Figures 1 to 4 As shown, a plasma cleaning head in this embodiment includes an electrode body 3 and a mounting base 6, an upper sheath 1, a lower sheath 2, and a nozzle 5 arranged sequentially from top to bottom. The upper sheath 1 has a high-voltage wire connection groove 10 and an electrode fixing groove 11 on its upper and lower sides facing inward. The high-voltage wire connection groove 10 allows one end of a high-voltage wire to be inserted for easy connection with the electrode body 3. The electrode fixing groove 11 is used to accommodate and fix the electrode body 3, preventing the electrode body 3 from loosening and falling off during the use of the plasma cleaning head, which would affect the cleaning effect of the plasma.

[0022] The upper sheath 1 and the lower sheath 2 are respectively provided with a plurality of air inlets 9 and a through gas flow channel 12 along the height direction. The air inlets 9 are connected to the gas flow channel 12. The plurality of air inlets 9 are connected to an external gas supply mechanism so that the gas supply mechanism can provide a continuous supply of clean gas to the inside of the cleaning head, so that the clean gas can subsequently flow through the electrode body 3 to form a plasma gas with a cleaning effect.

[0023] In some embodiments, four air inlets 9 are provided and arranged in a circular array along the center circumference of the upper sheath 1.

[0024] It should be noted that the structure of the above-mentioned air supply mechanism is not limited, and it can be an air pump or other known mechanical equipment that can provide clean gas to the air inlet 9.

[0025] One end of the electrode body 3 is located in the electrode fixing groove 11, and its end is connected to the high voltage line. The high voltage line transmits electrical energy to the electrode body 3, which excites the gas to generate plasma, thereby achieving cleaning.

[0026] The other end can extend through the gas flow channel 12. A quartz tube 4 is sleeved on the electrode body 3 from bottom to top. The quartz tube 4 can completely cover the outer periphery and bottom of the electrode body 3. On the one hand, it can insulate the electrode body 3; on the other hand, the plasma temperature generated by the isolation and re-discharge excitation gas of the electrode body 3 through the quartz tube 4 is lower than that of the existing plasma cleaning head, which can meet the cleaning needs of products that are not resistant to high temperature and improve the applicability of the plasma cleaning head.

[0027] A gap is provided between the quartz tube 4 and the gas flow channel 12 to allow gas to flow through the air inlet 9, so that the electrode body 3 can ionize the gas after being energized. The clean gas entering the gas flow channel 12 from the air inlet 9 can diffuse evenly to the outer periphery of the electrode body 3 and form plasma gas under the ionization of the electrode body 3.

[0028] The quartz tube 4 has a U-shaped cross-section along its height, and its upper surface is flush with one end of the electrode body 3. Specifically, the top of the quartz tube 4 is open so that the electrode body 3 can be inserted into it. The quartz tube 4 can completely cover the circumference and bottom of the electrode body 3 to ensure the insulation of the electrode body 3.

[0029] In some embodiments, the diameter of the electrode body 3 is 6.8 mm, and the inner diameter of the quartz tube 4 is 7 mm.

[0030] The bottom of the high-voltage wire connection slot 10 is connected to the top of the electrode fixing slot 11 through a threaded connection hole, so that one end of the electrode body 3 is screwed into the upper sheath 1. A threaded hole is opened on the top of the electrode body 3. During installation, the screw is screwed through the connection hole and threaded into the threaded hole on the electrode body 3, which facilitates the installation and replacement of the electrode body 3 and ensures that the electrode body 3 will not detach from the upper sheath 1 during long-term use, thus ensuring the cleaning efficiency of the plasma cleaning head.

[0031] The mounting base 6 has a through-hole groove 7 in the middle. The upper surface of the upper sheath 1 is recessed inward with a groove, and a clearance space 8 is formed between the upper surface of the groove and the lower surface of the clearance groove 7. The clearance groove 7 facilitates the connection between the high-voltage line and the gas supply mechanism. The clearance space 8 allows workers to easily install the high-voltage line into the high-voltage line wiring groove 10, or connect the gas supply pipe on the gas supply mechanism to the air inlet 9 one by one.

[0032] In some embodiments, the clearance groove 7 is concentrically arranged with the recess. Each air inlet 9 is at least partially covered by the clearance groove 7, further ensuring the convenience of connecting the air supply mechanism to the air inlet 9.

[0033] A gas equalization groove is formed at the top of the lower sheath 2, and the gas equalization groove can cover all the air inlets 9. A gas equalization chamber 13 is formed between the bottom of the gas equalization groove and the lower surface of the upper sheath 1. The gas in all the air inlets 9 can only enter the gas equalization groove, and after being mixed evenly in the gas equalization groove, it diffuses into the gas flow channel 12. The setting of the gas equalization groove can ensure that the gas enters the gas flow channel 12 evenly, and that the plasma gas ejected from the nozzle 5 is uniform throughout; on the other hand, it can also store the gas entering from the air inlets 9.

[0034] The nozzle 5 has a through gas outlet 15 at its bottom and a gas equalization groove 2 recessed at its top. The bottom of the gas equalization groove 2 and the bottom of the lower sheath 2 form a gas equalization chamber 2 14 for accommodating plasma gas. The gas ionized by the electrode body 3 is finally ejected from the gas outlet 15 to clean the product.

[0035] The ionized gas eventually enters the uniform gas distribution tank 2, where the plasma gas diffuses evenly in the uniform gas distribution chamber 2 14 to ensure that the final sprayed plasma gas is uniform throughout, thereby ensuring the cleaning effect on the product.

[0036] A funnel-shaped groove 2, concentric with the gas outlet 15, is formed in the middle of the gas uniform chamber 2 14. The upper surface of the groove 2 is a support slope 17 that supports the quartz tube 4. Several gas passages 16 are arrayed on the support slope 17.

[0037] The quartz tube 4 extends from the lower sheath 2 into the nozzle 5, ensuring that the gas forms low-temperature plasma gas after ionization by the electrode body 3. The bottom of the quartz tube 4 is spherical and fitted onto the electrode body 3. When the lower sheath 2 is assembled with the nozzle 5, the spherical outer surface of the bottom of the quartz tube 4 can contact the supporting inclined surface 17. At this time, the supporting inclined surface 17 can provide an upward supporting force to the quartz tube 4, ensuring that the quartz tube 4 will not fall downward and completely block the gas outlet 15.

[0038] In some embodiments, the support slope 17 is provided with four air passages 16 arranged in a circular array around the center of the groove 2. The slope portion on the support slope 17 can provide uniform support force to the bottom of the quartz tube 4 from four mutually perpendicular directions. The four air passages 16 can allow the plasma in the uniform gas chamber 2 14 to pass through uniformly, so that the plasma gas can be uniformly ejected from the gas outlet 15.

[0039] The mounting base 6 and the upper sheath 1, as well as the upper sheath 1 and the lower sheath 2, are connected by screws. The inner wall of the nozzle 5 is provided with an internal thread that matches the external thread on the outer periphery of the bottom of the lower sheath 2. The mounting base 6, the upper sheath 1, and the lower sheath 2 are detachably connected to each other by screws, which facilitates the disassembly and installation of the plasma cleaning head as a whole, allowing the staff to maintain and replace the electrode body 3 and the quartz tube 4 inside the plasma cleaning head in a timely manner. The nozzle 5 is detachably connected, which facilitates timely cleaning of the inside of the nozzle 5.

[0040] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A plasma cleaning head, characterized by: The electrode body and the mounting base, the upper sheath, the lower sheath and the nozzle are sequentially arranged from top to bottom; high-voltage wire connecting grooves and electrode fixing grooves are formed in the upper and lower sides of the upper sheath towards the inside; a plurality of air inlet holes and a gas flow channel are formed in the upper and lower sheaths along the height direction; the electrode body is located in the electrode fixing groove at one end, and the end is connected with the high-voltage wire, and the other end can extend through the gas flow channel; a quartz tube is sleeved on the electrode body from bottom to top; the quartz tube and the gas flow channel are left with an air inlet gap for the gas in the air inlet hole to flow through, so that the electrode body ionizes the gas after being electrified.

2. A plasma cleaning head as claimed in claim 1, characterized in that: The cross section of the quartz tube along the height direction is U-shaped, and the upper surface is flush with the end of the electrode body.

3. The plasma cleaning head of claim 1 wherein: The bottom of the high-voltage wire connecting groove and the top of the electrode fixing groove are connected through the threaded connecting hole, so that the one end of the electrode body is screwed and locked in the upper sheath.

4. The plasma cleaning head of claim 1 wherein: The middle part of the mounting base is provided with a through accommodation groove, the upper surface of the upper sheath is recessed with a groove one, and the upper surface of the groove one and the lower surface of the accommodation groove form an accommodation space.

5. The plasma cleaning head of claim 1 wherein: The top of the lower sheath is provided with a uniform air groove, and the uniform air groove can cover all the air inlet holes, and the bottom of the uniform air groove and the lower surface of the upper sheath form a uniform air chamber one.

6. The plasma cleaning head of claim 1 wherein: The nozzle is provided with a through gas outlet at the bottom, and a uniform air groove two is recessed downward at the top, and the bottom of the uniform air groove two and the bottom of the lower sheath form a uniform air chamber two for containing plasma gas.

7. A plasma cleaning head as claimed in claim 6, characterized in that: A funnel-shaped groove two is downwardly formed in the middle of the uniform air chamber two and concentric with the gas outlet, the upper surface of the groove two is a support inclined surface for supporting the quartz tube, and a plurality of air passage channels are arrayed on the support inclined surface.

8. The plasma cleaning head of claim 1 wherein: The mounting base and the upper sheath, and the upper sheath and the lower sheath are connected by screws, and the inner wall of the nozzle is provided with internal threads matched with the external threads of the lower sheath bottom.

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