Simple automobile spraying equipment

Abstract

The utility model relates to spraying equipment, in particular to simple spraying equipment for an automobile, which comprises a spray head, a first accelerating channel and a second accelerating channel are arranged in the spray head, and a wax spraying port and a material returning port are arranged on the spray head; wherein the second acceleration channel is communicated with the material returning opening through a backflow channel, a discharging opening of the first acceleration channel is communicated with a feeding opening of the second acceleration channel, and the cross section area of the discharging opening of the first acceleration channel is smaller than that of the feeding opening of the second acceleration channel. According to the simple spraying equipment for the automobile, negative pressure is generated in the second acceleration channel based on fluid dynamics and a Bernoulli equation, so that wax drops formed around the wax spraying opening are further sucked through the backflow channel, and the wax drops enter the second acceleration channel to be converged and are sprayed out of the wax spraying opening; therefore, the wax drops at the wax spraying port are effectively prevented from being exposed in the air for a long time after being gathered and are easy to solidify and block the wax spraying port.

Description

Technical Field

[0001] The utility model relates to spraying equipment, in particular to simple spraying equipment for automobiles. Background Art

[0002] During transportation, the car needs to be sprayed with wax on the surface to prevent it from rusting.

[0003] Publication number CN203484302U, publication date 20140319, discloses a simple spraying device, including a spray gun and a box with an open upper end. An annular collar is horizontally fixed on the bottom surface of the inner cavity of the box. A heating pipe is also provided in the inner cavity of the box, and the heating pipe is provided on the outside of the annular collar. A hanging bracket is fixed on the box, and a roller is provided at the bottom of the box.

[0004] In the prior art including the above patents, when the spray gun sprays wax, wax droplets are easily generated at the nozzle. After the wax droplets are collected and exposed to the outside, they are easily solidified, thereby causing the nozzle to be blocked. Utility Model Content

[0005] The utility model aims to provide a simple automobile spraying device, which is used to solve the technical problem that when a spray gun sprays wax, wax droplets are easily generated at the nozzle, and the wax droplets are easily solidified when exposed to the outside, thereby causing the nozzle to be blocked.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a simple automobile spraying device, comprising:

[0007] A nozzle having a first accelerating channel and a second accelerating channel formed therein, and a wax spraying port and a material return port formed on the nozzle;

[0008] Among them, the second acceleration channel is connected to the return port through a reflux channel, the discharge port of the first acceleration channel is connected to the feed port of the second acceleration channel, and the cross-sectional area at the discharge port of the first acceleration channel is smaller than the cross-sectional area at the feed port of the second acceleration channel.

[0009] Preferably, the first acceleration channel and the second acceleration channel are tapered channels, and the cross-sectional areas of both gradually decrease from the feed port to the discharge port.

[0010] Preferably, the nozzle further comprises a rotating shaft rotatably arranged inside the nozzle, on which spiral blades are arranged in a circular array.

[0011] Preferably, the nozzle further includes spacer plates fixedly arranged in a circular array inside the nozzle.

[0012] Preferably, the main body is further comprised, on which a fixing plate is fixedly provided, a pump body is fixedly mounted on the fixing plate, and the discharge port of the pump body is connected to the nozzle via a hose.

[0013] Preferably, the device further comprises a wax storage barrel fixedly arranged inside the main body, which is connected to the feed port of the pump body through a wax extraction pipe.

[0014] Preferably, the device further comprises a heater fixedly arranged on the top of the body, an output end of which is provided with a heating copper column, and the heating copper column array is arranged inside the body.

[0015] In the above technical solution, the utility model provides a simple automobile spraying equipment with the following beneficial effects: since the cross-sectional area at the discharge port of the first acceleration channel is smaller than the cross-sectional area at the feed port of the second acceleration channel, based on fluid dynamics and Bernoulli's equation, when the high-speed jet passes through the injection port, the cross-sectional area of ​​the injection port is reduced, the speed of the fluid will be accelerated, and the pressure will be reduced at the same time. According to Bernoulli's theorem, the greater the flow rate, the lower the air pressure in the area. As the flow rate increases, the static pressure will decrease accordingly. Therefore, a low-pressure area is formed near the injection port, thereby utilizing the pressure difference to form the flow of the medium. Therefore, when the high-speed jet enters the second acceleration channel from the first acceleration channel, a low-pressure area is formed around the feed port of the second acceleration channel, thereby generating negative pressure in the second acceleration channel, thereby further sucking the wax droplets formed around the wax spray port through the reflux channel, so that the wax droplets enter the second acceleration channel and converge, and are sprayed out from the wax spray port, thereby effectively avoiding the wax droplets at the wax spray port from being exposed to the air for a long time after being gathered, and easily solidifying and clogging the wax spray port. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 A schematic diagram of a three-dimensional structure provided by an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the enlarged structure provided by an embodiment of the utility model;

[0019] Figure 3 A schematic diagram of a front cross-sectional structure provided for an embodiment of the present utility model;

[0020] Figure 4 A schematic diagram of the B amplified structure provided in an embodiment of the present utility model;

[0021] Figure 5 A schematic diagram of the cross-sectional structure of a nozzle provided by an embodiment of the utility model;

[0022] Figure 6 This is a schematic cross-sectional structural diagram provided for an embodiment of the present utility model.

[0023] Description of reference numerals:

[0024] 1. Main body; 11. Cover; 12. Elastic clip; 13. Fixing plate; 2. Heater; 21. Heating copper column; 3. Pump body; 31. Hose; 32. Wax extraction tube; 4. Nozzle; 41. Wax spray port; 42. Return port; 43. Rotating ring; 431. Connecting rod; 432. Rotating shaft; 433. Spiral blade; 44. Spacer; 45. First acceleration channel; 46. Second acceleration channel; 47. Reflux channel; 5. Wax storage barrel. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] like Figure 1-6 As shown, a simple automobile spraying device includes:

[0027] The nozzle 4 has a first accelerating channel 45 and a second accelerating channel 46 formed therein, and a wax spraying port 41 and a material return port 42 formed on the nozzle 4;

[0028] Among them, the second acceleration channel 46 is connected to the return port 42 through the reflux channel 47, the discharge port of the first acceleration channel 45 is connected to the feed port of the second acceleration channel 46, and the cross-sectional area at the discharge port of the first acceleration channel 45 is smaller than the cross-sectional area at the feed port of the second acceleration channel 46.

[0029] Specifically, after the high-speed wax liquid enters the nozzle 4, it flows into the first acceleration channel 45, then flows into the second acceleration channel 46 through the first acceleration channel 45, and is sprayed out through the wax spray port 41, thereby spraying the surface of the car.

[0030] Since wax droplets are easily generated at the wax spray port 41 when the nozzle 4 sprays wax, and the wax droplets are easily solidified and blocked by being exposed to the air for a long time after being collected, a return port 42 is provided in a circular array around the wax spray port 41. Since the cross-sectional area at the discharge port of the first acceleration channel 45 is smaller than the cross-sectional area at the feed port of the second acceleration channel 46, based on fluid dynamics and Bernoulli's equation, when a high-speed jet passes through the injection port, the cross-sectional area of ​​the injection port is reduced, the speed of the fluid will be accelerated, and the pressure will be reduced at the same time. According to Bernoulli's theorem, the greater the flow rate, the lower the air pressure in the area. As the flow rate increases, its static pressure will be reduced accordingly. It should drop, therefore, a low-pressure area is formed near the injection port, thereby utilizing the pressure difference to form the flow of the medium. Therefore, when the high-speed jet enters the second acceleration channel 46 from the first acceleration channel 45, a low-pressure area is formed around the feed port of the second acceleration channel 46, thereby generating a negative pressure in the second acceleration channel 46, thereby further sucking the wax droplets formed around the wax injection port 41 through the reflux channel 47, so that the wax droplets enter the second acceleration channel 46 and converge, and are ejected from the wax injection port 41, thereby effectively avoiding the wax droplets at the wax injection port 41 from being exposed to the air for a long time after being gathered, and easily solidified and clogging the wax injection port 41.

[0031] In the above technology, since the cross-sectional area at the discharge port of the first acceleration channel 45 is smaller than the cross-sectional area at the feed port of the second acceleration channel 46, based on fluid dynamics and Bernoulli's equation, when the high-speed jet passes through the injection port, the cross-sectional area of ​​the injection port is reduced, the speed of the fluid will increase, and the pressure will decrease at the same time. According to Bernoulli's theorem, the greater the flow rate, the lower the air pressure in the area. As the flow rate increases, the static pressure will decrease accordingly. Therefore, a low-pressure area is formed near the injection port, thereby utilizing the pressure difference to form the flow of the medium. Therefore, when the high-speed jet enters the second acceleration channel 46 from the first acceleration channel 45, a low-pressure area is formed around the feed port of the second acceleration channel 46, thereby generating a negative pressure in the second acceleration channel 46, and further sucking the wax droplets formed around the wax injection port 41 through the reflux channel 47, so that the wax droplets enter the second acceleration channel 46 and converge, and are ejected from the wax injection port 41, thereby effectively avoiding the wax droplets at the wax injection port 41 from being exposed to the air for a long time after being gathered, and easily solidifying and clogging the wax injection port 41.

[0032] As a further embodiment provided by the present invention, the first accelerating channel 45 and the second accelerating channel 46 are tapered channels, and the cross-sectional areas of both gradually decrease from the feed port to the discharge port.

[0033] Specifically, after the wax liquid enters the nozzle 4, it first enters the first acceleration channel 45. Since the cross-sectional area of ​​the first acceleration channel 45 gradually decreases from the feed port to the discharge port, following the principle that the flow rate is large at a small cross-section and the flow rate is small at a large cross-section, the wax liquid enters the first acceleration channel 45 and is accelerated, and then enters the second acceleration channel 46. The cross-sectional area of ​​the second acceleration channel 46 gradually decreases from the feed port to the discharge port. Similarly, the wax liquid accelerated by the first acceleration channel 45 is further accelerated by the second acceleration channel 46 and then ejected, thereby making the spray more delicate, thereby improving the spraying effect.

[0034] As a further embodiment provided by the present invention, the present invention further includes a rotating shaft 432 rotatably arranged inside the nozzle 4 , on which spiral blades 433 are arranged in a circular array.

[0035] Specifically, the wax liquid enters the nozzle 4, and as the wax liquid flows, the spiral blade 433 is driven to rotate, and the spiral blade 433 is further accelerated to form a vortex under the driving action of the spiral blade 433, thereby achieving initial acceleration.

[0036] A rotating ring 43 is rotatably provided inside the nozzle 4 , and a connecting rod 431 is fixedly provided between the rotating ring 43 and the rotating shaft 432 to support the rotating shaft 432 .

[0037] As a further embodiment provided by the present invention, the present invention further includes spacer plates 44 fixedly arranged in a circumferential array inside the nozzle 4 .

[0038] Specifically, the partition plate 44 is provided to prevent the generation of swirl flow, thereby forming a high-speed jet flow and then entering the first acceleration channel 45 .

[0039] The present invention further provides an embodiment, which further includes a body 1 , on which a fixing plate 13 is fixedly provided, a pump body 3 is fixedly mounted on the fixing plate 13 , and a discharge port of the pump body 3 is connected to the nozzle 4 via a hose 31 .

[0040] Specifically, the main body 1 includes a wax storage barrel 5 fixedly mounted inside the main body 1, which is connected to the feed port of the pump body 3 via a wax extraction pipe 32. The nozzle 4 is removed from the elastic clamp 12 provided on the main body 1, and the pump body 3 is started. The wax liquid in the wax storage barrel 5 is extracted through the wax extraction pipe 32, and then enters the nozzle 4 through the hose 31, where it is accelerated and sprayed out.

[0041] As a further embodiment provided by the present invention, the heater 2 is further provided on the top of the main body 1 , and a heating copper column 21 is provided at the output end thereof. The heating copper column 21 array is provided inside the main body 1 .

[0042] Specifically, the cover 11 is opened, the body 1 is filled with water, and the heater 2 is started to heat the heating copper column 21, thereby heating the water, thereby heat-insulating the wax liquid in the wax storage barrel 5, thereby preventing the wax liquid from solidifying.

[0043] Working principle: Start the pump body 3, and then extract the wax liquid in the wax storage barrel 5 through the wax extraction pipe 32, and enter the nozzle 4 through the hose 31. After the wax liquid enters the nozzle 4, the wax liquid enters the nozzle 4. As the wax liquid flows, the spiral blade 433 is driven to rotate, thereby further accelerating to form a swirl under the driving action of the spiral blade 433, thereby achieving initial acceleration. The spacer 44 is set to prevent the generation of the swirl, thereby forming a high-speed jet and then entering the first acceleration channel 45. It first enters the first acceleration channel 45. Since the first acceleration channel 45 is from The cross-sectional area from the feed port to the discharge port is gradually reduced. Following the principle that the flow rate is large at a small cross-sectional area and the flow rate is small at a large cross-sectional area, the wax liquid enters the first acceleration channel 45 for acceleration and then enters the second acceleration channel 46. The cross-sectional area of ​​the second acceleration channel 46 from the feed port to the discharge port is gradually reduced. Similarly, the wax liquid accelerated by the first acceleration channel 45 is further accelerated by the second acceleration channel 46 before being ejected, thereby making the spray more delicate and improving the spraying effect. When the nozzle 4 sprays wax, wax droplets are easily generated at the wax spray port 41. After the wax droplets are collected and exposed for a long time In the air, it is easy to solidify and clog the wax spray port 41, so a return port 42 is arranged in a circular array around the wax spray port 41. Since the cross-sectional area at the discharge port of the first acceleration channel 45 is smaller than the cross-sectional area at the feed port of the second acceleration channel 46, based on fluid dynamics and Bernoulli's equation, when a high-speed jet passes through the injection port, the cross-sectional area of ​​the injection port is reduced, the speed of the fluid will increase, and the pressure will decrease at the same time. According to Bernoulli's theorem, the greater the flow rate, the lower the air pressure in the area. As the flow rate increases, its static pressure will decrease accordingly. Therefore, a jet is formed near the injection port. A low-pressure area is formed, thereby utilizing the pressure difference to form the flow of the medium. Therefore, when the high-speed jet enters the second acceleration channel 46 from the first acceleration channel 45, a low-pressure area is formed around the feed port of the second acceleration channel 46, thereby generating a negative pressure in the second acceleration channel 46, and further sucking the wax droplets formed around the wax spray port 41 through the reflux channel 47, so that the wax droplets enter the second acceleration channel 46 and converge, and are sprayed out from the wax spray port 41, thereby effectively avoiding the wax droplets at the wax spray port 41 from being exposed to the air for a long time after being gathered, and easily solidified and clogging the wax spray port 41.

[0044] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A simple automobile spraying equipment, characterized in that: include: A nozzle (4) is provided with a first acceleration channel (45) and a second acceleration channel (46), and the nozzle (4) is provided with a wax spray port (41) and a material return port (42); The second acceleration channel (46) is connected to the return port (42) via a reflux channel (47), the discharge port of the first acceleration channel (45) is connected to the feed port of the second acceleration channel (46), and the cross-sectional area at the discharge port of the first acceleration channel (45) is smaller than the cross-sectional area at the feed port of the second acceleration channel (46).

2. A simple automobile spraying equipment according to claim 1, characterized in that: The first acceleration channel (45) and the second acceleration channel (46) are tapered channels, and the cross-sectional areas of both gradually decrease from the feed port to the discharge port.

3. The simple automobile spraying equipment according to claim 1, characterized in that: It also includes a rotating shaft (432) rotatably arranged inside the nozzle (4), on which spiral blades (433) are arranged in a circumferential array.

4. The simple automobile spraying equipment according to claim 1, characterized in that: It also includes spacer plates (44) fixedly arranged in a circumferential array inside the nozzle (4).

5. The simple automobile spraying equipment according to claim 1, characterized in that: It also includes a body (1) on which a fixing plate (13) is fixedly provided. A pump body (3) is fixedly mounted on the fixing plate (13). The discharge port of the pump body (3) is connected to the nozzle (4) via a hose (31).

6. The simple automobile spraying equipment according to claim 5, characterized in that: It also includes a wax storage barrel (5) fixedly arranged inside the main body (1), which is connected to the feed port of the pump body (3) via a wax extraction pipe (32).

7. The simple automobile spraying equipment according to claim 5, characterized in that: It also includes a heater (2) fixedly arranged on the top of the body (1), an output end of which is provided with a heating copper column (21), and an array of the heating copper columns (21) is arranged inside the body (1).

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