Normal-pressure plasma multi-orifice spray gun

Abstract

The utility model provides a normal-pressure plasma multi-spray-hole spray gun. The normal-pressure plasma multi-spray-hole spray gun comprises a spray nozzle, a spray head, a front gun barrel, a middle gun barrel, a rear gun barrel, a driving shaft, a component, a cable module and a pipe sealing cover. At least two spraying holes are formed in the peripheral side surface of the nozzle, and the nozzle is detachably connected with the spray head; the end, away from the nozzle, of the sprayer is fixedly connected with the front gun barrel, the other end of the front gun barrel is detachably connected with the middle gun barrel, and the other end of the middle gun barrel is fixedly connected with the rear gun barrel. The driving shaft is accommodated in the rear gun barrel and is fixedly connected with the tube sealing cover, and the tube sealing cover is detachably connected with the rear gun barrel; a wiring pipe and an air inlet pipe are arranged in the driving shaft, the cable module is arranged in the wiring pipe in a penetrating mode, the component is arranged in the middle gun barrel, and the component is electrically connected with the cable module. By adopting the multi-spray-hole design, at least two spray holes are formed in the peripheral side face of the spray nozzle, the spray coverage range and uniformity of plasma are improved, and the spray nozzle is suitable for various application scenes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of atmospheric pressure plasma torch, in particular to a kind of atmospheric pressure plasma multi-nozzle torch. BACKGROUND

[0002] Plasma cleaning technology is widely used in many fields. In the electronic industry, as products become more sophisticated, the requirements for surface treatment of components increase, and plasma cleaning technology becomes increasingly critical.

[0003] At present, plasma cleaning equipment mainly includes vacuum and atmospheric pressure plasma cleaning machines. The vacuum plasma cleaning machine first places the product in the processing cavity, and then introduces gas to generate plasma after being pumped to about 30 Pa vacuum. However, it takes time to pump and break the vacuum, and the single processing capacity is small, the production capacity is low, and the use scenario is limited. The atmospheric pressure plasma cleaning machine uses high voltage ionization compressed air to generate plasma to process products. It does not require a vacuum environment, uses compressed air as a process gas, has low cost, is easy to operate, and can adjust production capacity as needed.

[0004] Currently, the traditional atmospheric pressure plasma torch adopts a single nozzle structure, but the nozzle limits the output size of the plasma flow. For example, in building exterior wall coating treatment, using a single nozzle torch requires a large amount of time to process the wall piece by piece, greatly lengthening the construction period and failing to meet the demand for efficient progress of modern building projects. In industrial production, this inefficient processing method increases production costs. CONTENT OF THE INVENTION

[0005] In view of the above problems, the present application is proposed to provide an atmospheric pressure plasma multi-nozzle torch to overcome the above problems or at least partially solve the above problems. The atmospheric pressure plasma multi-nozzle torch comprises a nozzle, a spray head, a front gun barrel, a middle gun barrel, a rear gun barrel, a drive shaft, components, a cable module, and a pipe cover. The nozzle has at least two nozzles on its side surface, and the nozzle is detachably connected to the spray head. The end of the spray head away from the nozzle is fixedly connected to the front gun barrel, the other end of the front gun barrel is detachably connected to the middle gun barrel, and the other end of the middle gun barrel is fixedly connected to the rear gun barrel. The drive shaft is contained in the rear gun barrel and is fixedly connected to the pipe cover, and the pipe cover is detachably connected to the rear gun barrel. The drive shaft is provided with a wiring tube and an air inlet pipe, the cable module is arranged in the wiring tube, the components are arranged in the middle gun barrel, and the components are electrically connected to the cable module.

[0006] Optionally, the diameters of each of the nozzles are the same.

[0007] When the number of nozzles is two, the two nozzles are symmetrically arranged.

[0008] Optionally, the nozzle and the spray head are connected by threads, and the threads are fine threads.

[0009] Optionally, the front barrel and the middle barrel are connected through a snap connection, the snap connection comprising a clamping block arranged at an end of the front barrel and a clamping groove arranged at an end of the middle barrel, the clamping block and the clamping groove being in interference fit.

[0010] Optionally, the component comprises an electrode head, a cyclone and a ceramic piece.

[0011] The cyclone is fixedly connected with the ceramic piece.

[0012] The electrode head is detachably connected with the cyclone.

[0013] Optionally, the cable module comprises a power cable and a signal cable, and the power cable and the signal cable are both wrapped with an insulating layer.

[0014] Optionally, the nozzle is made of a ceramic material resistant to high temperature and corrosion.

[0015] Optionally, the spray gun further comprises a holding plate, the holding plate being arranged at the outer side of the rear barrel, and the surface of the holding plate being provided with anti-skid lines.

[0016] Optionally, the spray head is internally provided with a mixing chamber, the mixing chamber being in communication with the spray hole of the nozzle.

[0017] Optionally, the driving shaft is provided with a rotary joint at the end close to the pipe cover, the rotary joint being connected with an external gas supply device and a power supply device.

[0018] The application has the following advantages:

[0019] In the embodiments of the present application, in order to solve the problem that the single nozzle structure of the atmospheric pressure plasma cleaning gun in the prior art limits the output scale of the plasma flow, the present application provides an atmospheric pressure plasma multi-nozzle spray gun, which specifically comprises a nozzle, a spray head, a front gun barrel, a middle gun barrel, a rear gun barrel, a drive shaft, components, a cable module and a pipe cover; the nozzle is provided with at least two nozzles on the circumferential surface, and the nozzle is detachably connected with the spray head; one end of the spray head away from the nozzle is fixedly connected with the front gun barrel, the other end of the front gun barrel is detachably connected with the middle gun barrel, and the other end of the middle gun barrel is fixedly connected with the rear gun barrel; the drive shaft is accommodated in the rear gun barrel and is fixedly connected with the pipe cover, and the pipe cover is detachably connected with the rear gun barrel; a wire channel and an air inlet pipe are arranged in the drive shaft, the cable module is arranged in the wire channel, the components are arranged in the middle gun barrel, and the components are electrically connected with the cable module. By adopting the multi-nozzle design, at least two nozzles are arranged on the circumferential surface of the nozzle, the spraying coverage range and uniformity of the plasma are improved, and the atmospheric pressure plasma multi-nozzle spray gun is suitable for various application scenarios. The nozzle, the spray head, the front gun barrel, the middle gun barrel, the rear gun barrel and other components are detachably connected, which facilitates assembly, maintenance and replacement, improves the flexibility and service life of the equipment. The wire channel and the air inlet pipe are arranged in the drive shaft, the cable module is arranged in the wire channel, and the components are arranged in the middle gun barrel, so that the structure is compact, the complexity of external pipelines is reduced, and operation and maintenance are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the present application, the drawings needed to be used in the description of the present application will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 The overall structure schematic diagram of the atmospheric pressure plasma multi-nozzle spray gun provided by the present application is shown;

[0022] Figure 2 The double-hole structure schematic diagram of the atmospheric pressure plasma multi-nozzle spray gun provided by the present application is shown;

[0023] Figure 3 The multi-hole structure schematic diagram of the atmospheric pressure plasma multi-nozzle spray gun provided by the present application is shown.

[0024] The reference signs in the drawings of the specification are as follows:

[0025] 1, nozzle; 2, spray head; 3, front barrel; 4, middle barrel; 5, rear barrel; 6, drive shaft; 7, components; 8, cable module; 9, pipe cover; 10, spray hole; 11, air inlet pipe; 12, wiring pipe; 13, buckle; 14, electrode head; 15, cyclone; 16, ceramic; 17, hand plate. DETAILED DESCRIPTION

[0026] In order to make the purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below in combination with the drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0027] The inventor found through analysis of the prior art that conventional atmospheric plasma direct spray guns are vertically sprayed through the gun outlet. For narrow space side walls, a single spray gun cannot clean the side walls that need to be cleaned by swinging direction, and it needs to be combined with complex machinery to achieve, which is time-consuming and laborious. The traditional spray gun opens a hole on the side of the spray head to clean the narrow space side wall, but the plasma sprayed by a single hole is limited, and for large-area narrow space side walls, such a single-hole spray gun is not suitable.

[0028] Please refer to Figure 1 , which shows a structure diagram of an atmospheric plasma multi-nozzle spray gun provided by the present application.

[0029] An atmospheric plasma multi-nozzle spray gun, comprising a nozzle, a spray head, a front barrel, a middle barrel, a rear barrel, a drive shaft, components, a cable module and a pipe cover; the nozzle is provided with at least two spray holes on the side surface, the nozzle is detachably connected with the spray head; the end of the spray head away from the nozzle is fixedly connected with the front barrel, the other end of the front barrel is detachably connected with the middle barrel, and the other end of the middle barrel is fixedly connected with the rear barrel; the drive shaft is contained in the rear barrel and is fixedly connected with the pipe cover, and the pipe cover is detachably connected with the rear barrel; the wiring pipe and the air inlet pipe are arranged in the drive shaft, the cable module is arranged in the wiring pipe, the components are arranged in the middle barrel, and the components are electrically connected with the cable module.

[0030] It should be noted that after the components in the spray gun are powered on, the gas (usually inert gas such as argon, etc.) in the specific area of the spray gun is ionized by using high-frequency electric field or other excitation methods. The atoms or molecules in the gas are excited to form a plasma containing a large number of electrons, ions and neutral particles. The plasma is accelerated and sprayed: the gas is introduced into the interior of the spray gun through the gas inlet pipe in the drive shaft, and the gas is heated and ionized when passing through the plasma area to form high-temperature and high-speed plasma jet. These plasma jets are sprayed at high speed from the multiple nozzle holes of the nozzle under the action of the pressure difference.

[0031] In the embodiments of the present application, in order to solve the problem that the single-nozzle structure of the atmospheric pressure plasma cleaning gun in the prior art limits the output scale of the plasma flow, an atmospheric pressure plasma multi-nozzle spray gun is provided, which specifically comprises a nozzle, a spray head, a front gun pipe, a middle gun pipe, a rear gun pipe, a drive shaft, components, a cable module and a pipe cover; the nozzle is provided with at least two nozzle holes on the circumferential side, the nozzle is detachably connected with the spray head, one end of the spray head away from the nozzle is fixedly connected with the front gun pipe, the other end of the front gun pipe is detachably connected with the middle gun pipe, the other end of the middle gun pipe is fixedly connected with the rear gun pipe, the drive shaft is accommodated in the rear gun pipe and fixedly connected with the pipe cover, the pipe cover is detachably connected with the rear gun pipe, a wire pipe and a gas inlet pipe are arranged in the drive shaft, the cable module is arranged in the wire pipe, the components are arranged in the middle gun pipe, and the components are electrically connected with the cable module. By adopting the multi-nozzle design, at least two nozzle holes are arranged on the circumferential side of the nozzle, the spraying coverage range and uniformity of the plasma are improved, and the atmospheric pressure plasma multi-nozzle spray gun is suitable for various application scenarios. The nozzle, the spray head, the front gun pipe, the middle gun pipe, the rear gun pipe and other components are detachably connected, which facilitates assembly, maintenance and replacement, improves the flexibility and service life of the equipment. The wire pipe and the gas inlet pipe are arranged in the drive shaft, the cable module is arranged in the wire pipe, and the components are arranged in the middle gun pipe, so that the structure is compact, the complexity of external pipelines is reduced, and operation and maintenance are facilitated.

[0032] In an embodiment of the present application, the diameters of each of the nozzle holes of the atmospheric pressure plasma multi-nozzle spray gun are the same; when the number of the nozzle holes is two, the two nozzle holes are symmetrically arranged, as shown in Figure 2 In particular, as shown in Figure 3 The number of the nozzle holes can also be greater than 2, and the corresponding number of the nozzle holes can be selected according to specific requirements. The nozzle and the spray head are connected by threads, and the threads are fine threads. The spray head is internally provided with a mixing chamber, and the mixing chamber is in communication with the nozzle holes of the nozzle. The nozzle is made of a high-temperature-resistant and corrosion-resistant ceramic material.

[0033] It should be noted that each of the plurality of nozzles of the pressure plasma multi-nozzle spray gun has the same aperture. This consistency ensures that the plasma sprayed from each nozzle is relatively uniform in key parameters such as flow rate, velocity and temperature during the plasma spraying process, which is conducive to improving the uniformity and quality stability of the coating.

[0034] It should be noted that the inside of the spray head is provided with a mixing chamber which is in communication with the nozzles of the spray nozzle. During the operation of the spray gun, a plurality of gases (such as plasma working gas, auxiliary gas, etc.) are fully mixed in the mixing chamber, and by reasonably designing the structure and size of the mixing chamber, the mixing effect of the gases can be optimized, so that the mixed gases can reach the best proportion and state before entering the nozzles of the spray nozzle, thereby ensuring that the plasma sprayed from the nozzles has good performance.

[0035] In an embodiment of the present application, the front gun barrel and the middle gun barrel are connected by a buckle, the buckle includes a clamping block arranged at the end of the front gun barrel and a clamping groove arranged at the end of the middle gun barrel, and the clamping block and the clamping groove are interference fit. The components include an electrode head, a cyclone and a ceramic piece; the cyclone and the ceramic piece are fixedly connected; and the electrode head and the cyclone are detachably connected.

[0036] It should be noted that the electrode head and the cyclone are detachably connected. This design has great flexibility. When the equipment needs to be maintained, repaired or the electrode head needs to be replaced according to different working requirements, the electrode head can be conveniently and quickly detached from the cyclone. For example, when the electrode head needs to be replaced due to wear after long-term use, the entire equipment does not need to be disassembled on a large scale. Only the electrode head needs to be detached from the cyclone, and a new electrode head can be replaced, which greatly improves the maintenance efficiency of the equipment and reduces the maintenance cost. At the same time, the detachable connection also facilitates the replacement of different specifications of electrode heads according to different experimental purposes during the research and development and testing stages, so as to explore the best performance parameters of the equipment.

[0037] In an embodiment of the present application, the cable module includes a power line and a signal line, and the outer layers of the power line and the signal line are wrapped with an insulating layer. The spray gun further includes a grip plate arranged on the outer side of the rear gun barrel, and the surface of the grip plate is provided with anti-slip patterns. One end of the drive shaft close to the pipe cover is provided with a rotary joint, and the rotary joint is connected with an external gas supply device and a power supply device.

[0038] It should be noted that the holding plate is arranged outside the rear barrel, which provides a comfortable and stable holding position for the operator. The surface is provided with anti-slip lines, which greatly increases the friction between the palm and the holding plate. During the operation of the spray gun, especially when the spray gun needs to be operated for a long time, or in some more complex working environment (such as vibration, hand sweating, etc.), the anti-slip lines can effectively prevent the operator's hand from accidentally slipping off, ensuring that the operator can always stably hold the spray gun and accurately control the moving direction and angle of the spray gun, thereby ensuring the smooth progress of the spraying work and the accuracy of the spraying effect.

[0039] Although the preferred embodiments of the application have been described, those skilled in the art, once they know the basic creative concept, can make additional changes and modifications to these embodiments. Therefore, the appended claims are intended to include the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the application.

[0040] Finally, it should be noted that in this paper, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or terminal device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or terminal device including the element.

[0041] The above describes in detail a normal pressure plasma multi-nozzle spray gun provided by the application, and the principles and implementation modes of the application are described by applying specific examples. The above description of the embodiments is only used to help understand the method of the application and its core idea; at the same time, for those skilled in the art, according to the idea of the application, there will be changes in the specific implementation mode and application range; in view of the above, the content of the specification should not be understood as a limitation of the application.

Claims

1. A normal pressure plasma multi-orifice spray gun, characterized in that, Includes nozzles, spray heads, front barrels, middle barrels, rear barrels, drive shafts, components, cable modules, and sealing caps; The nozzle has at least two spray holes on its peripheral side, and the nozzle is detachably connected to the spray head. The end of the nozzle away from the nozzle is fixedly connected to the front gun barrel, the other end of the front gun barrel is detachably connected to the middle gun barrel, and the other end of the middle gun barrel is fixedly connected to the rear gun barrel. The drive shaft is housed within the rear barrel and is fixedly connected to the sealing cap, which is detachably connected to the rear barrel. The drive shaft is equipped with a cable tray and an air intake pipe. The cable module passes through the cable tray, and the components are arranged inside the gun barrel. The components are electrically connected to the cable module.

2. The atmospheric pressure plasma multi-orifice spray gun according to claim 1, characterized in that, Each of the nozzles has the same diameter; When there are two nozzles, the two nozzles are arranged symmetrically.

3. The atmospheric pressure plasma multi-orifice spray gun according to claim 1, characterized in that, The nozzle and the spray head are connected by a thread, and the thread is a fine thread.

4. The atmospheric pressure plasma multi-orifice spray gun according to claim 1, characterized in that, The front barrel and the middle barrel are connected by a snap-fit ​​mechanism. The snap-fit ​​mechanism includes a snap block disposed at the end of the front barrel and a snap groove disposed at the end of the middle barrel. The snap block and the snap groove are interference-fitted.

5. The atmospheric pressure plasma multi-orifice spray gun according to claim 1, characterized in that, The components include electrode heads, cyclone components, and ceramic components; The cyclone component is fixedly connected to the ceramic component; The electrode head is detachably connected to the cyclone component.

6. The atmospheric pressure plasma multi-orifice spray gun according to claim 2, characterized in that, The cable module includes a power line and a signal line, both of which are covered with an insulating layer.

7. The atmospheric pressure plasma multi-orifice spray gun according to claim 3, characterized in that, The nozzle is made of high-temperature resistant and corrosion-resistant ceramic material.

8. The atmospheric pressure plasma multi-orifice spray gun according to claim 4, characterized in that, The spray gun also includes a grip plate, which is disposed on the outside of the rear barrel, and the surface of the grip plate is provided with anti-slip texture.

9. The atmospheric pressure plasma multi-orifice spray gun according to claim 4, characterized in that, The nozzle has a mixing chamber inside, which is connected to the nozzle orifice.

10. The atmospheric pressure plasma multi-orifice spray gun according to claim 1, characterized in that, The drive shaft is provided with a rotary joint at one end near the sealing cap, and the rotary joint is connected to an external gas supply device and a power supply device.

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