Ultrasonic anti-settling spray gun

Abstract

The embodiment of the invention provides an ultrasonic anti-settling spray gun which comprises a spray gun body, a nozzle, a siphon, a storage tank and an ultrasonic dispersion device, the nozzle is arranged at the front end of the spray gun body, and the storage tank is arranged on the lower portion of the spray gun body; the top of the siphon pipe is connected to the interior of the spray gun body, the bottom of the siphon pipe extends into the storage tank, and paint in the storage tank is sucked into the spray gun body through the siphon pipe and sprayed out through the nozzle; and the ultrasonic dispersion device is arranged at the bottom of the storage tank and is used for generating high-frequency vibration of ultrasonic waves so that the coating in the storage tank is uniformly dispersed without precipitation. No dispersion disc is arranged in the storage tank, no dead angle exists in subsequent cleaning, ultrasonic waves generated by the ultrasonic dispersion device can enable residual paint in the storage tank to be evenly dispersed into cleaning liquid, and cleaning is more convenient and thorough.

Description

Technical Field

[0001] The present invention relates to the technical field of spray guns, and more specifically, to an ultrasonic anti-settling spray gun. Background Art

[0002] Spraying, as the main construction process of coatings, is widely used in industrial production. As the main tool for spraying, spray guns can be mainly divided into three categories according to the working principle: pressure-fed type, gravity type, and suction type. Their respective working characteristics are as follows:

[0003] Pressure-fed type manual spray gun: It is mainly supplied from an external paint pump or pressure tank / pressure barrel. Such a paint supply pressure method can supply paint to several spray guns simultaneously. It is suitable for large-area continuous spraying operations.

[0004] Gravity type manual spray gun: It uses gravity to draw the paint from the upper pot to the lower nozzle, and then atomizes it through high-pressure air. It is very suitable for production operations with small paint consumption and complex spraying. If large-area and continuous operations are required, a taller paint tank can be added to improve the situation.

[0005] Suction type manual spray gun: Its paint tank is located at the lower part of the spray gun. It uses the negative air pressure formed by high-speed air flow to suck the paint to the nozzle and mixes it with high-pressure air to atomize it. Its atomization effect is the best, and the sprayed coating is uniform and has the highest gloss. It is mainly suitable for small-area and non-continuous complex operations.

[0006] Due to the relatively high viscosity of the paint, it is necessary to dilute it during the spraying construction process to reduce its viscosity. This easily causes the sedimentation acceleration of the pigments and fillers inside the paint, and further causes problems such as spray gun clogging and coating color difference. The current main solution is to add a dispersion device in the paint storage tank or paint tank to ensure that the paint is in a flowing state and ensure its uniformity. For the suction type manual spray gun, since its storage tank is very small, adding a dispersion disk makes its cleaning process very troublesome, there are dead corners that are not easy to clean, which affects the subsequent spraying operations of other paints. Summary of the Invention

[0007] In view of the problems in the related art, an embodiment of the present invention provides an ultrasonic anti-settling spray gun that can prevent the paint from settling during spraying and is easy to clean and maintain, which can effectively prevent problems such as coating color difference and spray gun clogging caused by sedimentation during the construction process.

[0008] An embodiment of the present invention provides an ultrasonic anti-settling spray gun, which includes a spray gun body, a nozzle, a siphon tube, a storage tank, and an ultrasonic dispersion device. The nozzle is arranged at the front end of the spray gun body, and the storage tank is arranged at the lower part of the spray gun body; the top of the siphon tube is connected to the inside of the spray gun body, and the bottom of the siphon tube extends into the inside of the storage tank. The paint in the storage tank is sucked into the inside of the spray gun body through the siphon tube and sprayed out through the nozzle; the ultrasonic dispersion device is arranged at the bottom of the storage tank and is used to generate high-frequency vibration of ultrasonic waves to evenly disperse the paint in the storage tank without precipitation.

[0009] Preferably, the ultrasonic anti-settling spray gun further includes a spray pipe, a high-pressure gas passage, and a high-pressure gas interface. The high-pressure gas passage and the spray pipe are both arranged inside the spray gun body. The two ends of the high-pressure gas passage are respectively fixedly connected to the high-pressure gas interface and the air inlet of the spray pipe. The top of the siphon tube is arranged inside the spray gun body and is fixedly connected to the feed inlet of the spray pipe;

[0010] When the ultrasonic anti-settling spray gun performs a spraying operation, the high-speed air flow introduced through the high-pressure gas interface in the high-pressure gas passage quickly flows through the spray pipe, causing a negative air pressure to generate suction; thereby sucking the paint from the storage tank to the spray pipe through the siphon tube and spraying it out through the nozzle connected to the spray pipe.

[0011] Preferably, the front part and the rear part of the bottom end of the spray pipe are respectively provided with a feed inlet and an air inlet, and the storage tank is detachably connected to the lower part of the spray gun body.

[0012] Preferably, the spray gun body includes a gun body and a handle connected to each other; the storage tank is arranged at the lower part of the gun body, and the spray pipe is arranged inside the gun body; the high-pressure gas passage is arranged inside the handle, and the high-pressure gas interface is arranged at the bottom of the handle; the end of the spray pipe away from the handle is fixedly connected with the nozzle, and the top of the siphon tube is arranged inside the gun body and is fixedly connected to the feed inlet of the spray pipe.

[0013] Preferably, the ultrasonic anti-settling spray gun further includes a pneumatic wrench, a rotating shaft, and a spring. The two sides of the top end of the pneumatic wrench are respectively rotatably connected to the outer side wall of one end of the gun body close to the spray pipe through the rotating shaft; one end of the spring is fixedly connected to the pneumatic wrench, and the other end of the spring is fixedly connected to the handle.

[0014] Preferably, after the pneumatic wrench is pulled, the high-speed air flow introduced through the high-pressure gas interface in the high-pressure gas passage quickly flows through the spray pipe, causing a negative air pressure to generate suction; thereby sucking the paint from the storage tank to the spray pipe through the siphon tube and spraying it out through the nozzle.

[0015] Preferably, the gun body and the handle are integrally formed, the top of the siphon tube and the gun body are integrally formed, and the high-pressure gas passage, the high-pressure gas interface and the handle are integrally formed.

[0016] Preferably, the ultrasonic anti-settling spray gun further includes a spray width adjustment knob, a flow rate adjustment knob and a pressure adjustment knob. The spray width adjustment knob and the flow rate adjustment knob are respectively arranged at the end of the gun body away from the nozzle from top to bottom, and the pressure adjustment knob is arranged on the handle.

[0017] Preferably, the ultrasonic dispersion device and the storage tank are integrally formed; the storage tank has a storage cavity for storing paint and a containing cavity that are isolated from each other; the ultrasonic dispersion device is arranged in the containing cavity; the ultrasonic dispersion device includes a piezoelectric ceramic, a fixed platform, a coupling member and a power socket; the fixed platform is fixed in the containing cavity, the bottom of the coupling member is fixed on the fixed platform, and the top of the coupling member contacts the bottom of the storage cavity; the piezoelectric ceramic and the coupling member are bonded and fixed by a heat-conducting glue, and a power socket for connecting an external power supply is arranged at the bottom of the fixed platform; the piezoelectric ceramic is used to convert electrical energy into high-frequency vibration, and the coupling member is used to transfer the high-frequency vibration from the piezoelectric ceramic to the storage cavity, so that the paint in the storage cavity is evenly dispersed.

[0018] Preferably, the siphon tube is bent.

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

[0020] The ultrasonic anti-settling spray gun of the present invention adds an ultrasonic dispersion device to the suction-type spray gun. Since the improved suction-type spray gun can keep the paint in the storage tank under high-speed shear under the action of ultrasonic waves during the spraying process, the paint can be evenly dispersed without settling; compared with the spray gun with a dispersion disk with a stirring function added, the paint dispersion effect is better. In addition, during the spray gun cleaning process, compared with the existing spray gun with a dispersion disk (the dispersion disk usually has no cleaning dead angle), the ultrasonic anti-settling spray gun of the present invention is more convenient, efficient and can achieve no cleaning dead angle due to the action of ultrasonic waves. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of the ultrasonic anti-settling spray gun according to the embodiment of the present invention.

[0023] Figure 2 is Figure 1 An enlarged schematic view of the P area in

[0024] Figure 3 is Figure 1 A partial structural schematic view of the storage tank in Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0026] As Figure 1 shown, the ultrasonic anti-settling spray gun 100 includes a spray gun body 10, a nozzle 12, a siphon tube 20, a storage tank 30, and an ultrasonic dispersion device 50. In this embodiment, the ultrasonic anti-settling spray gun 100 is a suction-type spray gun.

[0027] The nozzle 12 is arranged at the front end of the spray gun body 10. The storage tank 30 is arranged below the spray gun body 10. The top of the siphon tube 20 is connected to the inside of the spray gun body 10, and the bottom of the siphon tube 20 extends into the inside of the storage tank 30. The paint in the storage tank 30 is sucked into the inside of the spray gun body 10 through the siphon tube 20 and ejected through the nozzle 12 (specifically, the paint in the storage tank 30 is sucked into the spray pipe 14 inside the spray gun body 10 and ejected through the nozzle 12 connected to the spray pipe 14). The ultrasonic dispersion device 50 is arranged at the bottom of the storage tank 30 and is used to generate high-frequency vibrations of ultrasonic waves to evenly disperse the paint in the storage tank 30 without precipitation.

[0028] Specifically, the ultrasonic dispersion device 50 is used to generate high-frequency vibrations of ultrasonic waves to keep the paint in the storage tank 30 under high-speed shear during the spraying process, so as to achieve uniform dispersion and non-precipitation of the pigment and filler particles in the paint.

[0029] Furthermore, the ultrasonic anti-settling spray gun 100 further includes a spray pipe 14, a high-pressure gas channel 15, and a high-pressure gas interface 16. The spray pipe 14 and the high-pressure gas channel 15 are both arranged inside the spray gun body 10. The two ends of the high-pressure gas channel 16 are respectively fixedly connected to the high-pressure gas interface 16 and the air inlet 142 of the spray pipe 14. The top of the siphon tube 20 is arranged inside the spray gun body 10 and is fixedly connected to the feed inlet 140 of the spray pipe 14.

[0030] When the ultrasonic anti-settling spray gun 100 performs a spraying operation (for example, after pulling the pneumatic trigger 17), the high-speed air flow introduced through the high-pressure gas interface 16 in the high-pressure gas passage 15 rapidly flows through the nozzle 14, creating a negative air pressure to generate suction; thus, the paint is sucked from the storage tank 30 to the nozzle 14 through the siphon tube 20 and ejected through the nozzle 12 connected to the nozzle 14.

[0031] Specifically, a feed port 140 and an air inlet 142 are respectively provided at the front part and the rear part of the bottom end of the nozzle 14, and the storage tank 30 is detachably connected to the lower part of the spray gun body 10.

[0032] Furthermore, the spray gun body 10 includes a gun body 102 and a handle 104 which are connected to each other. Specifically, the gun body 102 and the handle 104 are integrally formed.

[0033] The storage tank 30 is arranged at the lower part of the gun body 102. The nozzle 14 is arranged inside the gun body 102, the high-pressure gas passage 15 is arranged inside the handle 104, and a high-pressure gas interface 16 is arranged at the bottom of the handle 104. The high-pressure gas interface 16 is designed as a snap type, which is convenient for connecting external high-pressure air.

[0034] One end of the nozzle 14 far from the handle 104 is fixedly connected with a nozzle 12. The top of the siphon tube 20 is arranged inside the gun body 102 and fixedly connected with the feed port 140 of the nozzle 14.

[0035] The storage tank 30 is detachably connected to the lower part of the gun body 102. Specifically, the storage tank 30 is located at the lower part of the gun body 102, and the storage tank 30 is connected to the lower part of the gun body 102 through a bayonet for convenient disassembly.

[0036] Specifically, the top of the siphon tube 20 is integrally formed with the gun body 102, and the high-pressure gas passage 15, the high-pressure gas interface 16 and the handle 104 are integrally formed.

[0037] In the embodiment of the present invention, the siphon tube 20 adopts a bent design. During the spraying operation, the bottom end of the siphon tube 20 is located at the bottommost part of the liquid level in the storage tank 30 to ensure that there is no paint residue.

[0038] Furthermore, as Figure 2 shown, the ultrasonic anti-settling spray gun 100 further includes a pneumatic wrench 17, a rotating shaft 18 and a spring 19. The two sides of the top end of the pneumatic wrench 17 are respectively rotatably connected to the outer side wall of one end of the gun body 102 close to the nozzle 14 through the rotating shaft 17; one end of the spring 19 is fixedly connected to the pneumatic wrench 17, and the other end of the spring 19 is fixedly connected to the handle 104. The arrangement of the spring 19 facilitates the reset of the pneumatic wrench 17 and avoids the jamming of the pneumatic wrench 17.

[0039] Further, the ultrasonic anti-settling spray gun 100 further includes a spray width adjustment knob 90 and a flow rate adjustment knob 92. At one end of the gun body 102 away from the nozzle 12, the spray width adjustment knob 90 and the flow rate adjustment knob 92 are respectively arranged from top to bottom. The spray width and the flow rate of the ultrasonic anti-settling spray gun 100 can be adjusted through the spray width adjustment knob 90 and the flow rate adjustment knob 92 respectively.

[0040] Specifically, by way of non-limiting illustration, the gun body 102 and the spray width adjustment knob 90 are fixed by screws, and the gun body 102 and the flow rate adjustment knob 92 are fixed by screws.

[0041] Further, the ultrasonic anti-settling spray gun 100 further includes a air pressure adjustment knob 94 arranged on the handle 104. Specifically, the air pressure adjustment knob 94 is arranged on the side of the handle 104 close to the storage tank 30. By way of non-limiting illustration, the air pressure adjustment knob 94 and the handle 104 are fixedly connected by screws.

[0042] During the use of the ultrasonic anti-settling spray gun 100, the spraying can be adjusted through the spray width adjustment knob 90, the flow rate adjustment knob 92 and the air pressure adjustment knob 94 to control the spraying effect and efficiency.

[0043] Specifically, please refer to Figure 1 and Figure 3 , in the embodiment of the present invention, the storage tank 30 and the ultrasonic dispersion device 50 are integrally formed. The storage tank 30 has a storage cavity 32 filled with paint and a containing cavity 34 that are isolated from each other. The ultrasonic dispersion device 50 is arranged in the containing cavity 34. The ultrasonic dispersion device 50 includes a fixed platform 51, a power socket 52, a coupling member 53 and a piezoelectric ceramic 54; the fixed platform 51 is fixed in the containing cavity 34, the bottom of the coupling member 53 is fixed on the fixed platform 51, and the top of the coupling member 53 is in contact with the bottom of the storage cavity 32; the piezoelectric ceramic 54 and the coupling member 53 are adhesively fixed by heat-conducting glue, and a power socket 52 for connecting an external power supply is arranged at the bottom of the fixed platform 51; the piezoelectric ceramic 54 is used to convert electrical energy into high-frequency vibration, and the coupling member 53 is used to transfer the high-frequency vibration from the piezoelectric ceramic to the storage cavity 32 so as to uniformly disperse the paint in the storage cavity 32; that is, finally, the pigment and filler particles in the paint are uniformly dispersed.

[0044] Working principle: The high-pressure gas passage 15 accesses high-speed air flow through the high-pressure gas interface 16. After the air pressure trigger 17 is pulled (that is, when the ultrasonic anti-settling spray gun 100 performs spraying operation), the high-speed air flow quickly passes through the spray pipe 14, causing negative air pressure to generate suction force, so as to suck the paint from the storage tank 20 to the spray pipe 14 through the siphon tube 20 and spray it out through the nozzle 12.

[0045] The gas flow rate is high and the pressure is low near the nozzle (i.e., the surface pressure is low; the surface pressure is divided into dynamic pressure and static pressure); a pressure difference is formed with the high pressure in the storage tank (the gas flow rate in the storage tank is low, so the pressure is high), and the paint is siphoned to the nozzle.

[0046] During spraying operation, first load a certain amount of thinned paint into the storage tank 30, then install it on the gun body 102 through the bayonet, and then turn on the ultrasonic dispersion device 50 to generate ultrasonic waves. Under the action of ultrasonic waves, the paint inside the storage tank generates a strong shearing effect, so that the paint as a whole maintains a uniform dispersion state, and thus the paint does not settle. After the high-pressure gas interface 16 is connected to compressed air, adjust the spray pattern adjustment knob 90, flow rate adjustment knob 92, and air pressure adjustment knob 94 according to the spraying needs, and control the air pressure trigger 17 to achieve the spraying operation.

[0047] When cleaning is required after the spraying operation, add a certain amount of cleaning liquid to the storage tank, then turn on the ultrasonic dispersion device 50. Under the action of ultrasonic waves, the residual paint attached to the storage tank 30 can quickly detach and disperse into the cleaning liquid. Adjust the spray pattern adjustment knob 90, flow rate adjustment knob 92, and air pressure adjustment knob 94 to the maximum, control the air pressure trigger 17, and use the cleaning liquid to clean the internal siphon tube 20 and nozzle 12 of the ultrasonic anti-settling spray gun 100, so as to achieve the rapid cleaning of the ultrasonic anti-settling spray gun 100.

[0048] In summary, in the ultrasonic anti-settling spray gun of the present invention, (1) the ultrasonic dispersion device is located at the bottom of the storage tank, is closely attached to the storage tank, and is an integrated device with the storage tank; (2) the storage tank is located below the spray gun, is easy to replace, and is suitable for small-area and complex non-continuous spraying; (3) the storage tank with a built-in ultrasonic dispersion device can effectively prevent the paint in the storage tank from settling during the spraying construction process; (4) there is no dispersion disk in the storage tank, there is no dead angle in subsequent cleaning, and the built-in ultrasonic dispersion device makes the cleaning more convenient and thorough.

[0049] The working principle of the ultrasonic anti-settling spray gun of the present invention is as follows: The ultrasonic dispersion device is built in at the bottom of the storage tank. The high-frequency vibration of the ultrasonic waves generated during its operation can generate strong turbulence and tiny cavitation bubbles in the paint liquid, thereby generating high-intensity shear and realizing uniform dispersion and non-precipitation of the pigment and filler particles in the paint.

[0050] Cleaning process: There is no dispersion disk in the storage tank of the ultrasonic anti-settling spray gun, and there is no dead angle in subsequent cleaning. The ultrasonic waves generated by the ultrasonic dispersion device can evenly disperse the residual paint in the storage tank into the cleaning liquid, making the cleaning more convenient and thorough.

[0051] In the ultrasonic anti-settling spray gun of the present invention, an ultrasonic dispersion device is added to the suction spray gun. During the spraying process of the improved suction spray gun, the paint in the storage tank can be kept under high-speed shearing under the action of ultrasonic waves, so as to achieve uniform dispersion and non-settling of the paint. Compared with the spray gun with a dispersion disk with stirring function, the paint dispersion effect is better. In addition, during the cleaning process of the spray gun, compared with the existing spray gun with a dispersion disk (there are usually no cleaning dead corners in this dispersion disk), due to the action of ultrasonic waves, the ultrasonic anti-settling spray gun of the present invention is more convenient, efficient and can achieve no cleaning dead corners in the cleaning of the spray gun.

[0052] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An ultrasonic anti-settlement spray gun, characterized in that: It includes a spray gun body, a nozzle, a siphon tube, a storage tank, and an ultrasonic dispersion device. The nozzle is arranged at the front end of the spray gun body, and the storage tank is arranged at the lower part of the spray gun body; the top of the siphon tube is connected to the inside of the spray gun body, and the bottom of the siphon tube extends into the inside of the storage tank. The paint in the storage tank is sucked into the inside of the spray gun body through the siphon tube and sprayed out through the nozzle; the ultrasonic dispersion device is arranged at the bottom of the storage tank and is used to generate high-frequency vibration of ultrasonic waves to uniformly disperse the paint in the storage tank.

2. The ultrasonic anti-settling spray gun according to claim 1, wherein The ultrasonic anti-settling spray gun further includes a spray pipe, a high-pressure gas passage, and a high-pressure gas interface. The high-pressure gas passage and the spray pipe are both arranged inside the spray gun body. The two ends of the high-pressure gas passage are respectively fixedly connected to the high-pressure gas interface and the air inlet of the spray pipe. The top of the siphon tube is arranged inside the spray gun body and is fixedly connected to the feed port of the spray pipe; When the ultrasonic anti-settling spray gun performs a spraying operation, the high-speed air flow introduced through the high-pressure gas interface by the high-pressure gas passage quickly flows through the spray pipe, causing a negative air pressure to generate suction; thus, the paint is sucked from the storage tank to the spray pipe through the siphon tube and sprayed out through the nozzle connected to the spray pipe.

3. The ultrasonic anti-settlement spray gun according to claim 2, characterized in that, The front part and the rear part of the bottom end of the spray pipe are respectively provided with a feed port and an air inlet, and the storage tank is detachably connected to the lower part of the spray gun body.

4. The ultrasonic anti-settlement spray gun according to claim 2, characterized in that, The spray gun body includes a gun body and a handle that are connected to each other; the storage tank is arranged at the lower part of the gun body, and the spray pipe is arranged inside the gun body; the high-pressure gas passage is arranged inside the handle, and the high-pressure gas interface is arranged at the bottom of the handle; the end of the spray pipe far away from the handle is fixedly connected with the nozzle, and the top of the siphon tube is arranged inside the gun body and is fixedly connected to the feed port of the spray pipe.

5. The ultrasonic anti-settling spray gun according to claim 4, wherein The ultrasonic anti-settling spray gun further includes a pneumatic wrench, a rotating shaft, and a spring. The two sides of the top end of the pneumatic wrench are respectively rotatably connected to the outer side wall of one end of the gun body close to the spray pipe through the rotating shaft; one end of the spring is fixedly connected to the pneumatic wrench, and the other end of the spring is fixedly connected to the handle.

6. The ultrasonic anti-settling spray gun according to claim 5, characterized in that, After pulling the pneumatic wrench, the high-speed air flow introduced through the high-pressure gas interface by the high-pressure gas passage quickly flows through the spray pipe, causing a negative air pressure to generate suction; thus, the paint is sucked from the storage tank to the spray pipe through the siphon tube and sprayed out through the nozzle.

7. The ultrasonic anti-settlement spray gun according to claim 4, characterized in that, The gun body and the handle are integrally formed, the top of the siphon tube and the gun body are integrally formed, and the high-pressure gas passage, the high-pressure gas interface, and the handle are integrally formed.

8. The ultrasonic anti-settlement spray gun according to claim 4, wherein The ultrasonic anti-settling spray gun further includes a spray pattern adjustment knob, a flow rate adjustment knob, and a pressure adjustment knob. The spray pattern adjustment knob and the flow rate adjustment knob are respectively arranged on the gun body away from the nozzle from top to bottom, and the pressure adjustment knob is arranged on the handle.

9. The ultrasonic anti-settling spray gun according to claim 1, wherein The ultrasonic dispersion device and the storage tank are integrally formed; the storage tank has a storage cavity filled with paint and a containing cavity that are isolated from each other; the ultrasonic dispersion device is arranged in the containing cavity; the ultrasonic dispersion device includes a piezoelectric ceramic, a fixed platform, a coupling member, and a power socket; the fixed platform is fixed in the containing cavity, the bottom of the coupling member is fixed on the fixed platform, and the top of the coupling member contacts the bottom of the storage cavity; the piezoelectric ceramic and the coupling member are adhesively fixed through a heat-conducting glue, and a power socket for connecting an external power supply is arranged at the bottom of the fixed platform; The piezoelectric ceramic is used for converting electrical energy into high-frequency vibration, and the coupling member is used for transmitting the high-frequency vibration from the piezoelectric ceramic to the storage cavity so as to uniformly disperse the paint in the storage cavity.

10. The ultrasonic anti-settling spray gun according to claim 1, wherein, The siphon is bent.

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