阅读说明：本技术 喷涂流量控制方法及喷涂装置 (Spraying flow control method and spraying device ) 是由 问国徽 王浩然 王洪昆 王文刚 边志宏 王蒙 丁颖 王萌 焦杨 马瑞峰 于 2020-12-23 设计创作，主要内容包括：本发明涉及一种喷涂流量控制方法及喷涂装置。所述喷涂流量控制方法包括：喷枪、空压机构、喷枪供气机构、颜料输送机构、中枢控制机构与调节机构,还包括如下步骤：通过所述空压机构为所述喷枪供气机构与所述颜料输送机构输送气流；通过所述喷枪供气机构为所述喷枪提供喷气动力；通过所述颜料输送机构为所述喷枪输送颜料；通过所述中枢控制机构监控所述颜料输送机构输送至所述喷枪的颜料流量；通过所述调节机构对所述颜料输送机构输送至所述喷枪的颜料进行流量调节。上述喷涂流量控制方法可以对颜料的流量进行调节,从而保证了喷枪的喷涂效果。(The invention relates to a spraying flow control method and a spraying device. The spraying flow control method comprises the following steps: spray gun, air compression mechanism, spray gun air feed mechanism, pigment conveying mechanism, maincenter control mechanism and adjustment mechanism still include following step: the air supply mechanism and the pigment conveying mechanism are used for conveying air flow to the spray gun air supply mechanism and the pigment conveying mechanism through the air pressure mechanism; the air supply mechanism of the spray gun provides air injection power for the spray gun; conveying pigment for the spray gun through the pigment conveying mechanism; monitoring, by the central control mechanism, a paint flow rate delivered by the paint delivery mechanism to the spray gun; and the flow of the pigment conveyed to the spray gun by the pigment conveying mechanism is regulated by the regulating mechanism. The spraying flow control method can adjust the flow of the pigment, thereby ensuring the spraying effect of the spray gun.)

1. A spray flow control method, comprising: spray gun, air compression mechanism, spray gun air feed mechanism, pigment conveying mechanism, maincenter control mechanism and adjustment mechanism still include following step: the air supply mechanism and the pigment conveying mechanism are used for conveying air flow to the spray gun air supply mechanism and the pigment conveying mechanism through the air pressure mechanism; the air supply mechanism of the spray gun provides air injection power for the spray gun; conveying pigment for the spray gun through the pigment conveying mechanism; monitoring, by the central control mechanism, a paint flow rate delivered by the paint delivery mechanism to the spray gun; and the flow of the pigment conveyed to the spray gun by the pigment conveying mechanism is regulated by the regulating mechanism.

2. The paint flow control method according to claim 1, wherein in the step of supplying the air flow to the gun air supply means and the paint delivery means by the air pressure means, the air pressure means includes an air compressor and an air filter, and the air compressor supplies the air flow to the gun air supply means and the paint delivery means through the air filter.

3. The spraying flow control method according to claim 1, wherein in the step of supplying the spraying gun with the air jet power through the spraying gun air supply mechanism, the spraying gun air supply mechanism comprises a first conveying pipeline, a first pressure regulating valve, a first pressure gauge and a first electromagnetic valve, the first conveying pipeline is used for conveying the air flow conveyed by the spraying gun air supply mechanism to the spraying gun, the air pressure in the first conveying pipeline is regulated through the first pressure regulating valve, the air pressure in the first conveying pipeline is monitored through the first pressure gauge, and the first electromagnetic valve is used for controlling the on-off of the first conveying pipeline.

4. The paint flow control method according to claim 1, further comprising a first water-oil separating mechanism, wherein the air pressure mechanism provides air flow for the first water-oil separating mechanism, and the first water-oil separating mechanism performs water-oil separating operation on the paint output by the paint conveying mechanism.

5. The method according to claim 4, further comprising a second water/oil separating means, a shift switching valve, and a confluence line, wherein the two or more pigment feeding means are connected to the shift switching valve, the pigment in one of the pigment feeding means is fed to the spray gun through the confluence line by the shift switching valve, the two or more pigment feeding means carry pigments of two or more colors, respectively, and the pigment fed to the shift switching valve by the pigment feeding means is subjected to water/oil separation by the second water/oil separating means, the pigment flowing into the confluence pipeline is subjected to water-oil separation through the first water-oil separation mechanism, the pigment flowing into the confluence pipeline is subjected to flow monitoring through the central control mechanism, and the pigment flowing into the confluence pipeline is subjected to flow regulation through the regulating mechanism.

6. The paint flow control method according to claim 5, wherein in the step of transporting the paint for the spray gun by the paint delivery mechanism, the paint delivery mechanism includes a second delivery pipe, a second pressure regulating valve, a second pressure gauge, a first double diaphragm pump, a second solenoid valve, and a paint bucket, the second delivery pipe receives the air flow delivered by the spray gun air supply mechanism, the second pressure regulating valve regulates the air pressure in the second delivery pipe, the second pressure gauge monitors the air pressure in the second delivery pipe, the second solenoid valve controls the on/off of the second delivery pipe, the first double diaphragm pump pumps the paint in the paint bucket into the second delivery pipe, and the second delivery pipe is connected to the shift switching valve.

7. The paint flow control method according to claim 5, wherein in the step of performing the water-oil separation operation on the paint output by the paint delivery mechanism by the first water-oil separation mechanism, the first water-oil separation mechanism includes a third delivery pipe, a third pressure regulating valve, a third pressure gauge, a first water-oil separator, and a third solenoid valve, receives the air flow delivered by the spray gun air supply mechanism through the third delivery pipe, regulates the air pressure in the third delivery pipe by the third pressure regulating valve, monitors the air pressure in the third delivery pipe by the third pressure gauge, controls the connection or disconnection between the third delivery pipe and the spray gun by the third solenoid valve, and performs the water-oil separation on the paint delivered to the spray gun by the confluence pipe by the first water-oil separation mechanism.

8. The paint flow control method according to claim 5, wherein in the step of performing water-oil separation of the paint that is sent to the shift switching valve by the paint delivery mechanism by the second water-oil separation mechanism, the second water-oil separating mechanism comprises a fourth conveying pipeline, a fourth pressure regulating valve, a fourth pressure gauge, a fourth electromagnetic valve and a second water-oil separator, the fourth conveying pipeline receives the air flow conveyed by the spray gun air supply mechanism, the fourth pressure regulating valve regulates the air pressure in the fourth conveying pipeline, the air pressure in the fourth conveying pipeline is monitored through the fourth pressure gauge, the communication between the fourth conveying pipeline and the gear switching valve is controlled through the fourth electromagnetic valve, and the second water-oil separator is used for separating water and oil of the pigment flowing to the gear switching valve in the pigment conveying mechanism.

9. The paint flow control method according to claim 5, wherein in the step of adjusting the flow rate of the paint delivered to the spray gun by the paint delivery mechanism by the adjustment mechanism, the adjustment mechanism includes an electric pressure adjustment valve and a flow rate proportional valve, the electric pressure adjustment valve and the flow rate proportional valve are controlled by the central control mechanism, and the paint flowing into a confluence line is adjusted by the electric pressure adjustment valve and the flow rate proportional valve.

10. A coating apparatus comprising the coating flow control method according to any one of claims 1 to 9, further comprising:

the air compression module is used for conveying air flow for the spray gun air supply mechanism and the pigment conveying mechanism;

the spray gun air supply module is used for providing air injection power for the spray gun;

the pigment conveying module is used for conveying pigment to the spray gun;

the central control module is used for monitoring the pigment flow transmitted to the spray gun by the pigment conveying mechanism;

and the adjusting module is used for adjusting the flow of the pigment conveyed to the spray gun by the pigment conveying mechanism.

Technical Field

The invention relates to the technical field of spraying flow control methods, in particular to a spraying flow control method and a spraying device.

Background

The rail wagon can carry out marking coating operation on wagon vehicles according to actual use conditions, and the traditional marking coating operation is carried out manually. For example: an operator runs to a specific part of a vehicle by using manpower or an electric trolley and needs to hold a bushing and a paint spray gun for marking. At present, when the traditional spray gun is used, the injection amount (flow rate) of the pigment when the pigment is conveyed to the spray gun by the conveying pipeline cannot be controlled, so that the situation that the amount of the injected pigment is too much or too little occurs in the conveying pipeline, and the spraying effect of the spray gun is reduced.

Disclosure of Invention

In view of the above, it is necessary to provide a method for controlling a flow rate of spray and a spray apparatus, which are directed to the problem of how to improve the spray effect of a spray gun.

A spraying flow control method. The spraying flow control method comprises the following steps: spray gun, air compression mechanism, spray gun air feed mechanism, pigment conveying mechanism, maincenter control mechanism and adjustment mechanism still include following step: the air supply mechanism and the pigment conveying mechanism are used for conveying air flow to the spray gun air supply mechanism and the pigment conveying mechanism through the air pressure mechanism; the air supply mechanism of the spray gun provides air injection power for the spray gun; conveying pigment for the spray gun through the pigment conveying mechanism; monitoring, by the central control mechanism, a paint flow rate delivered by the paint delivery mechanism to the spray gun; and the flow of the pigment conveyed to the spray gun by the pigment conveying mechanism is regulated by the regulating mechanism.

A spraying device comprises the spraying flow control method and further comprises the following steps: the air compression module is used for conveying air flow for the spray gun air supply mechanism and the pigment conveying mechanism; the spray gun air supply module is used for providing air injection power for the spray gun; the pigment conveying module is used for conveying pigment to the spray gun; the central control module is used for monitoring the pigment flow transmitted to the spray gun by the pigment conveying mechanism; and the adjusting module is used for adjusting the flow of the pigment conveyed to the spray gun by the pigment conveying mechanism.

In one embodiment, in the step of delivering the air flow to the air supplying mechanism and the paint delivering mechanism through the air compressing mechanism, the air compressing mechanism includes an air compressor and an air filter, and the air compressor delivers the air flow to the air supplying mechanism and the paint delivering mechanism through the air filter.

In one embodiment, in the step of through spray gun air feed mechanism does the spray gun provides jet-propelled power, spray gun air feed mechanism includes first pipeline, first air-vent valve, first manometer and first solenoid valve, first pipeline be used for with the air current that spray gun air feed mechanism carried is carried extremely the spray gun, through first pressure regulating valve adjusts atmospheric pressure in the first pipeline, through first manometer control atmospheric pressure in the first pipeline, through first solenoid valve control the break-make of first pipeline.

In one embodiment, the spraying flow control method further comprises a first water-oil separation mechanism, wherein the air pressure mechanism provides air flow for the first water-oil separation mechanism, and the first water-oil separation mechanism performs water-oil separation operation on the pigment output by the pigment conveying mechanism.

In one embodiment, in the step of adjusting the flow rate of the pigment conveyed to the spray gun by the pigment conveying mechanism through the adjusting mechanism, the spraying flow rate control method further includes two or more second water-oil separating mechanisms, two or more shift switching valves and a confluence pipeline, the two or more second water-oil separating mechanisms are respectively connected to the two or more shift switching valves, the pigment in one of the pigment conveying mechanisms is conveyed to the spray gun through the confluence pipeline by the shift switching valves, the two or more pigment conveying mechanisms respectively carry two or more pigments, the pigment conveyed to the shift switching valves by the pigment conveying mechanisms is subjected to water-oil separation by the second water-oil separating mechanisms, and the pigment flowing into the confluence pipeline is subjected to water-oil separation by the first water-oil separating mechanism, the central control mechanism is used for monitoring the flow of the pigment flowing into the confluence pipeline, and the adjusting mechanism is used for adjusting the flow of the pigment flowing into the confluence pipeline.

In one embodiment, in the step of conveying the pigment for the spray gun through the pigment conveying mechanism, the pigment conveying mechanism includes a second conveying pipeline, a second pressure regulating valve, a second pressure gauge, a first double diaphragm pump, a second electromagnetic valve and a paint bucket, the second conveying pipeline receives the air flow conveyed by the spray gun air supply mechanism, the second pressure regulating valve regulates the air pressure in the second conveying pipeline, the second pressure gauge monitors the air pressure in the second conveying pipeline, the second electromagnetic valve controls the on-off of the second conveying pipeline, the first double diaphragm pump pumps the pigment in the paint bucket into the second conveying pipeline, and the second conveying pipeline is connected with the gear switching valve.

In one embodiment, in the step of performing the water-oil separation operation on the pigment output by the pigment conveying mechanism through the first water-oil separation mechanism, the first water-oil separation mechanism includes a third conveying pipeline, a third pressure regulating valve, a third pressure gauge, a first water-oil separator and a third electromagnetic valve, receives the air flow conveyed by the spray gun air supply mechanism through the third conveying pipeline, regulates the air pressure in the third conveying pipeline through the third pressure regulating valve, monitors the air pressure in the third conveying pipeline through the third pressure gauge, controls the communication or blocking between the third conveying pipeline and the spray gun through the third electromagnetic valve, and performs the water-oil separation on the pigment conveyed to the spray gun through the confluence pipeline through the first water-oil separator.

In one embodiment, in the step of performing water-oil separation on the pigment conveyed to the shift switching valve by the pigment conveying mechanism through the second water-oil separation mechanism, the second water-oil separation mechanism includes a fourth conveying pipeline, a fourth pressure regulating valve, a fourth pressure gauge, a fourth electromagnetic valve, and a second water-oil separator, receives the air flow conveyed by the spray gun air supply mechanism through the fourth conveying pipeline, regulates the air pressure in the fourth conveying pipeline through the fourth pressure regulating valve, monitors the air pressure in the fourth conveying pipeline through the fourth pressure gauge, controls the communication between the fourth conveying pipeline and the shift switching valve through the fourth electromagnetic valve, and performs water-oil separation on the pigment flowing to the shift switching valve in the pigment conveying mechanism through the second water-oil separator.

In one embodiment, in the step of adjusting the flow rate of the paint delivered to the spray gun by the paint delivery mechanism through the adjustment mechanism, the adjustment mechanism includes an electrical pressure regulating valve and a flow proportional valve, the electrical pressure regulating valve and the flow proportional valve are controlled by the central control mechanism, and the paint flowing into the confluence pipeline is adjusted by the electrical pressure regulating valve and the flow proportional valve.

In use, the paint flow control method described above first stores the desired paint via the paint delivery mechanism. The air pressure mechanism is used for providing air flow for the pigment conveying mechanism, namely, pigment in the pigment conveying mechanism can flow towards the spray gun under the driving of the air flow, then the air pressure mechanism is used for providing air flow for the spray gun air supply mechanism, so that the spray gun can spray pigment, and meanwhile, the spray amplitude of the spray gun can be changed by adjusting the air flow pressure through the spray gun air supply mechanism. When the pigment conveying mechanism conveys the pigment to the spray gun, the flow rate of the pigment is monitored through a central control mechanism, such as: and presetting a reference flow value in the central control mechanism according to the actual flow requirement, and if the central control mechanism detects that the actual flow of the pigment is greater than or less than the reference flow value, the central control mechanism can realize the adjustment of the pigment flow by controlling the adjusting mechanism. Therefore, the spraying flow control method can adjust the flow of the pigment, thereby ensuring the spraying effect of the spray gun.

When the spraying device is used, the air pressure module ensures the air flow required by the spraying device during operation, the air supply module of the spraying gun ensures the air injection power when the spraying gun sprays, the pigment conveying module provides the required pigment for the spraying device, and the pivot control module and the adjusting module realize the flow adjustment of the pigment conveyed to the spraying gun by the pigment conveying mechanism. The spraying device realizes the flow control of the spraying pigment, thereby improving the spraying effect of the spray gun.

Drawings

FIG. 1 is a flow chart of a spray flow control method;

FIG. 2 is a structural control diagram of a spray flow control method;

fig. 3 is a structural control diagram of the spray coating device.

10. An air pressure module, 20, a spray gun air supply module, 30, a paint delivery module, 40, a central control module, 50, a regulating module, 100, a spray gun, 200, an air pressure mechanism, 210, an air compressor, 220, an air filter, 300, a spray gun air supply mechanism, 310, a first delivery pipe, 320, a first pressure regulating valve, 330, a first pressure gauge, 340, a first solenoid valve, 350, an atomizing mechanism, 351, an atomizing pipe, 352, an atomizing pressure regulating valve, 353, an atomizing pressure gauge, 354, an atomizing solenoid valve, 400, a paint delivery mechanism, 410, a second water-oil separating mechanism, 411, a fourth delivery pipe, 412, a fourth pressure regulating valve, 413, a fourth pressure gauge, 414, a fourth solenoid valve, 415, a second water-oil separator, 420, a second delivery pipe, 430, a second pressure regulating valve, 440, a second pressure gauge, 450, a first double diaphragm pump, 460, a second solenoid valve, 470, a paint bucket, 480. pressure stabilizing valve 500, central control mechanism 510, regulating mechanism 511, electric pressure regulating valve 512, flow rate proportional valve 600, first water-oil separating mechanism 610, third conveying pipeline 620, third pressure regulating valve 630, third pressure gauge 640, first water-oil separator 650, third electromagnetic valve 700, gear switching valve 710, confluence pipeline 800, cleaning mechanism 810, first cleaning pipeline 811, fifth pressure regulating valve 812, fifth pressure gauge 813, second double diaphragm pump 814, cleaning agent 815, fifth electromagnetic valve 820, second cleaning pipeline 821, sixth pressure regulating valve 822, sixth pressure gauge 823, sixth electromagnetic valve 824, fourth water-oil separator 900, blow-dry mechanism 910, first blow-dry pipeline 911, seventh pressure regulating valve 912, seventh pressure gauge 913, third water-oil separator 914, seventh electromagnetic valve 920, blow-dry pressure regulator, A second blow-drying pipeline 921, an eighth pressure regulating valve 922, an eighth pressure gauge, 923 and an eighth solenoid valve.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

As shown in fig. 1 and 2, in one embodiment, the spray flow control method includes: the paint sprayer comprises a spray gun 100, an air pressure mechanism 200, a spray gun air supply mechanism 300, a paint conveying mechanism 400, a central control mechanism 500 and an adjusting mechanism 510, and further comprises the following steps: delivering air flow to the gun air supply mechanism 300 and the paint delivery mechanism 400 through the air pressure mechanism 200; providing jet power to the lance 100 through the lance air supply mechanism 300; delivering paint to the spray gun 100 via the paint delivery mechanism 400; monitoring, by the central control mechanism 500, the paint flow delivered to the spray gun 100 by the paint delivery mechanism 400; the flow rate of paint delivered by the paint delivery mechanism 400 to the spray gun 100 is adjusted by the adjustment mechanism 510.

In use, the paint flow control method described above begins with the desired paint being stored by the paint delivery mechanism 400. The air pressure mechanism 200 provides air flow for the paint delivery mechanism 400, so that the paint in the paint delivery mechanism 400 can flow towards the spray gun 100 under the driving of the air flow, then the air pressure mechanism 200 provides air flow for the spray gun air supply mechanism 300, so that the spray gun 100 can spray the paint, and meanwhile, the spray amplitude of the spray gun 100 can be changed by adjusting the air flow pressure through the spray gun air supply mechanism 300. When the paint delivery mechanism 400 delivers paint to the spray gun 100, the flow rate of the paint is monitored by the central control mechanism 500, for example: according to the actual flow requirement, a reference flow value is preset in the center control mechanism 500, and if the center control mechanism 500 detects that the actual flow of the pigment is greater than or less than the reference flow value, the center control mechanism 500 can adjust the pigment flow by controlling the adjusting mechanism 510. Therefore, the spraying flow control method can adjust the flow of the pigment, thereby ensuring the spraying effect of the spray gun 100.

In one embodiment, the hub control mechanism 500 may be a PLC controller or a PC computer.

In one embodiment, as shown in fig. 2, in the step of delivering the air flow to the gun air supply mechanism 300 and the paint delivery mechanism 400 through the air pressure mechanism 200, the air pressure mechanism 200 includes an air compressor 210 and an air filter 220, and the air compressor 210 delivers the air flow to the gun air supply mechanism 300 and the paint delivery mechanism 400 through the air filter 220. Specifically, the air outlet mode of the air compressor 210 combined with the air filter can ensure that the air outlet of the air pressure mechanism 200 is more stable on one hand, and can also reduce impurities carried in the air on the other hand.

As shown in fig. 2, in one embodiment, in the step of providing the airjet power to the lance 100 by the lance air supply mechanism 300, the lance air supply mechanism 300 includes a first delivery pipe 310, a first pressure regulating valve 320, a first pressure gauge 330 and a first electromagnetic valve 340, the first delivery pipe 310 is used for delivering the air flow delivered by the lance air supply mechanism 300 to the lance 100, the air pressure in the first delivery pipe 310 is regulated by the first pressure regulating valve 320, the air pressure in the first delivery pipe 310 is monitored by the first pressure gauge 330, and the on/off of the first delivery pipe 310 is controlled by the first electromagnetic valve 340. Specifically, when the spraying operation is required to be performed by the spray gun 100, the first electromagnetic valve 340 is adjusted to communicate with the first conveying pipeline 310, the air pressure in the first conveying pipeline 310 can be known by observing the first pressure gauge 330, and then the air pressure in the first conveying pipeline 310 is changed by the first pressure regulating valve 320 according to actual needs, so that the spraying intensity of the spray gun 100 or the atomization degree of the spray gun 100 can be changed. Further, an electric pressure regulating valve 511 may be added to the first delivery pipe 310 to assist in regulating the air pressure in the first delivery pipe 310.

As shown in fig. 2 and 3, in an embodiment, the spraying flow control method further includes a first water-oil separating mechanism 600, the air pressure mechanism 200 provides an air flow to the first water-oil separating mechanism 600, and the first water-oil separating mechanism 600 performs a water-oil separating operation on the pigment output by the pigment conveying mechanism 400. Specifically, the concentration of the pigment may vary due to the stored pigment being subjected to uncontrollable factors during blending, such that the pigment concentration for spraying by the spray gun 100 may be too dilute. Therefore, when the pigment concentration does not satisfy the spraying requirement, the first water-oil separation mechanism 600 performs water-oil separation on the pigment (i.e., the improved pigment) output by the pigment conveying mechanism 400, that is, the first concentration improvement of the pigment is realized.

As shown in fig. 2, in an embodiment, in the step of adjusting the flow rate of the pigment delivered from the pigment delivery mechanism 400 to the spray gun 100 by the adjusting mechanism 510, the method further includes two or more second water-oil separating mechanisms 410, a shift switching valve 700 and a confluence pipeline 710, where the two or more pigment delivery mechanisms 400 are connected to the shift switching valve 700, the pigment in one of the pigment delivery mechanisms 400 is delivered to the spray gun 100 through the confluence pipeline 710 by the shift switching valve 700, the two or more pigment delivery mechanisms 400 carry two or more pigments, respectively, and the pigment delivered from the pigment delivery mechanism 400 to the shift switching valve 700 is separated by the second water-oil separating mechanism 410, the first water-oil separating mechanism 600 performs water-oil separation on the pigment flowing into the confluence pipeline 710, the central control mechanism 500 performs flow monitoring on the pigment flowing into the confluence pipeline 710, and the adjusting mechanism 510 performs flow adjustment on the pigment flowing into the confluence pipeline 710.

Specifically, when the pigment concentration does not meet the spraying requirement, the pigment conveyed to the shift switching valve 700 by the pigment conveying mechanism 400 can be subjected to water-oil separation by the second water-oil separation mechanism 410, that is, the first concentration of the pigment is improved, and then the pigment after the first improvement is input into the confluence pipeline 710 by the shift switching valve 700, in the process, the pigment in the confluence pipeline 710 can be subjected to water-oil separation again by the first water-oil separation mechanism 600, that is, the second concentration of the pigment is improved, so that the spraying effect of the spray gun 100 is effectively ensured. In addition, when the concentration of the pigment stored in the pigment delivery mechanism 400 approaches the pigment spraying concentration required by the spray gun 100, the second water-oil separation mechanism 410 may be turned off, that is, the pigment is subjected to the water-oil separation operation (pigment concentration improvement) only by the first water-oil separation mechanism 600. Finally, the flow rate of the pigment in the branch line is monitored by the central control mechanism 500, for example: if the flow rate in the branch line deviates from the preset flow rate, the central control mechanism 500 may control the adjusting mechanism 510 to adjust the flow rate of the pigment in the branch line. That is, the paint sprayed from the spray gun 100 is finally ensured to meet the paint concentration requirement and the paint flow requirement during spraying.

In addition, considering that the color is switched when the spray gun 100 is used, two or more paint delivery mechanisms 400 are connected to the shift switching valve 700, and the shift switching valve 700 communicates with the spray gun 100 through the confluence line 710. When one color is required to be used, the pigment delivery mechanism 400 with the corresponding color is selected and the gear switching valve 700 is opened corresponding to the gear, so that the pigment confluence pipeline 710420 with the corresponding color can flow into the spray gun 100. In this process, whether the concentration adjustment is performed by the second water-oil separation mechanism 410 may be selected according to the actual concentration of the pigment. Further, when another color needs to be replaced again, the pigment delivery mechanism 400 with the corresponding color is selected and the gear switching valve 700 and the corresponding gear are opened, and the gear opened before the gear switching valve 700 needs to be closed, that is, the pigments of two colors are prevented from being mixed when passing through the gear switching valve 700.

As shown in fig. 2, in one embodiment, in the step of delivering paint to the spray gun 100 by the paint delivery mechanism 400, the paint delivery mechanism 400 includes a second delivery pipe 420, a second pressure regulating valve 430, a second pressure gauge 440, a first double diaphragm pump 450, a second solenoid valve 460 and a paint bucket 470, receives an air flow delivered by the spray gun air supply mechanism 300 through the second delivery pipe 420, regulates an air pressure in the second delivery pipe 420 by the second pressure regulating valve 430, monitors the air pressure in the second delivery pipe 420 by the second pressure gauge 440, controls the on/off of the second delivery pipe 420 by the second solenoid valve 460, draws the paint in the paint bucket 470 into the second delivery pipe 420 by the first double diaphragm pump 450, and connects the second delivery pipe 420 to the gear switching valve 700. Specifically, the air pressure in the second conveying pipeline 420 is monitored by the second pressure gauge 440, and meanwhile, the air pressure in the second conveying pipeline 420 can be adjusted by the second pressure regulating valve 430, when pigment is required to be conveyed, the communication between the second conveying pipeline 420 and the gear switching valve 700 is controlled by the second electromagnetic valve 460, that is, the pigment entering the second conveying pipeline 420 can be ensured to flow to the gear switching valve 700, the pigment is pumped out of the paint bucket 470 and poured into the second conveying pipeline 420 by the first double-diaphragm pump 450, the first double-diaphragm pump 450 has good pumping capacity for high-viscosity or particle-containing liquid, so that sufficient pigment can be ensured to enter the second conveying pipeline 420, and a flow stabilizing valve can be additionally arranged on the second conveying pipeline 420 to ensure the conveying effect of the pigment in the second conveying pipeline 420. The second delivery pipe 420 is connected to one of the gears of the gear switching valve 700, that is, when the corresponding gear of the gear switching valve 700 is opened, the paint in the second delivery pipe 420 can enter the confluence pipe 710 and finally reach the spray gun 100.

As shown in fig. 2, in one embodiment, in the step of performing the water-oil separation operation on the pigment output by the pigment conveying mechanism 400 through the first water-oil separation mechanism 600, the first water-oil separating mechanism 600 comprises a third conveying pipeline 610, a third pressure regulating valve 620, a third pressure gauge 630, a first water-oil separator 640 and a third electromagnetic valve 650, the air flow delivered by the lance air supply mechanism 300 is received through the third delivery line 610, the air pressure in the third delivery line 610 is regulated by the third pressure regulating valve 620, the air pressure in the third delivery line 610 is monitored by the third pressure gauge 630, the third electromagnetic valve 650 controls the communication or blocking of the third delivery pipe 610 with the spray gun 100, the pigment that is delivered to the spray gun 100 by the confluence pipeline 710 is subjected to water-oil separation by a first water-oil separator 640. Specifically, when the concentration of the pigment to be sprayed by the spray gun 100 is relatively low, the third electromagnetic valve 650 is opened to communicate the second conveying pipeline 420 with the confluence pipeline 710, the air pressure in the third conveying pipeline 610 is monitored by the third pressure gauge 630, the air pressure in the third conveying pipeline 610 is adjusted by the third pressure adjusting valve 620, at this time, the first water-oil separator 640 performs water-oil separation on the pigment used by the spray gun 100, so as to adjust the concentration of the pigment, and after the water-oil separation is completed, the third electromagnetic valve 650 is closed, so that the third conveying pipeline 610 is blocked from the confluence pipeline 710.

As shown in fig. 2, in one embodiment, in the step of performing water-oil separation on the paint conveyed to the gear switching valve 700 by the paint conveying mechanism 400 by the second water-oil separation mechanism 410, the second water-oil separating mechanism 410 comprises a fourth delivery pipe 411, a fourth pressure regulating valve 412, a fourth pressure gauge 413, a fourth electromagnetic valve 414 and a second water-oil separator 415, the air flow delivered by the lance air supply mechanism 300 is received through the fourth delivery pipe 411, the air pressure in the fourth delivery pipe 411 is regulated by the fourth pressure regulating valve 412, the air pressure in the fourth delivery pipe 411 is monitored by the fourth pressure gauge 413, the fourth delivery line 411 is controlled to communicate with the gear switching valve 700 by the fourth solenoid valve 414, the second water-oil separator 415 separates water and oil from the pigment flowing to the shift switching valve 700 in the pigment conveying mechanism 400. Specifically, when the pigment is conveyed by the pigment conveying mechanism 400 (that is, when the pigment is conveyed to the shift switching valve 700 by the pigment conveying mechanism 400), the concentration of the pigment can be adjusted by the second water-oil separation mechanism 410. That is, the fourth electromagnetic valve 414 controls the communication between the fourth delivery pipe 411 and the shift switching valve 700, the fourth pressure gauge 413 monitors the air pressure inside the fourth delivery pipe 411, the fourth pressure regulating valve 412 regulates the air pressure inside the fourth delivery pipe, and the second water-oil separator 415 separates the pigment delivered by the pigment delivery mechanism 400. Finally, the paint processed by the second water-oil separation mechanism 410 is delivered to the spray gun 100 by controlling the shift switching valve 700. The second water-oil separating mechanism 410 may be selectively operated or shut off depending on the actual concentration of pigment.

As shown in fig. 2, in one embodiment, in the step of adjusting the flow rate of the paint delivered from the paint delivery mechanism 400 to the spray gun 100 by the adjustment mechanism 510, the adjustment mechanism 510 includes an electrical pressure regulating valve 511 and a flow rate proportional valve 512, the electrical pressure regulating valve 511 and the flow rate proportional valve 512 are controlled by the central control mechanism 500, and the flow rate of the paint flowing into the confluence pipeline 710 is adjusted by the electrical pressure regulating valve 511 and the flow rate proportional valve 512. Specifically, the pigment flow in the shunt pipeline can be accurately controlled through the mode, and the control effect of the spraying flow control method is guaranteed.

As shown in fig. 3, in an embodiment, a spraying apparatus including the spraying flow control method according to any one of the above embodiments further includes: an air compression module 10 for delivering air flows to the spray gun air supply mechanism 300 and the paint delivery mechanism 400; the spray gun air supply module 20 is used for providing air injection power for the spray gun 100; a paint delivery module 30 for delivering paint to the spray gun 100; a hub control module 40 for monitoring the flow of paint delivered by the paint delivery mechanism 400 to the spray gun 100; and the adjusting module 50 is used for adjusting the flow of the pigment conveyed to the spray gun 100 by the pigment conveying mechanism 400.

When the spraying device is used, the air pressure module 10 ensures the air flow required by the spraying device in operation, the spray gun air supply module 20 ensures the air injection power when the spray gun 100 sprays, the pigment conveying module 30 provides the required pigment for the spraying device, and the pivot control module 40 and the adjusting module 50 realize the flow adjustment of the pigment conveyed to the spray gun 100 by the pigment conveying mechanism 400. The above spraying apparatus realizes the flow control of the spraying pigment, thereby improving the spraying effect of the spray gun 100.

In one embodiment, the spray flow control method further comprises a cleaning mechanism 800, and the spray gun 100 is cleaned by the cleaning mechanism 800. Specifically, the purge mechanism 800 includes a first purge line 810, a fifth pressure regulating valve 811, a fifth pressure gauge 812, a second double diaphragm pump 813, a purge agent 814, and a fifth solenoid valve 815, receives the air flow delivered by the lance air supply mechanism 300 through the first purge line 810, regulates the air pressure in the first purge line 810 through the fifth pressure regulating valve 811, monitors the air pressure in the first purge line 810 through the fifth pressure gauge 812, pumps the purge agent 814 into the first purge line 810 through the second double diaphragm pump 813, and controls the blocking and communication between the first purge line 810 and the range switching valve 700 through the fifth solenoid valve 815. The cleaning mechanism 800 further includes a second cleaning pipeline 820, a sixth pressure regulating valve 821, a sixth pressure gauge 822, a sixth electromagnetic valve 823 and a fourth water-oil separator 824, receives the air flow delivered by the spray gun air supply mechanism 300 through the second cleaning pipeline 820, regulates the air pressure in the second cleaning pipeline 820 through the sixth pressure regulating valve 821, monitors the air pressure in the second cleaning pipeline 820 through the fifth pressure gauge 812, controls the communication between the second cleaning pipeline 820 and the gear shift switching valve 700 through the sixth electromagnetic valve 823, and can realize the communication between the second cleaning pipeline 820 and the first cleaning pipeline 810 through the gear shift switching of the gear shift switching valve 700, and at this time, the cleaning agent 814 (i.e., the cleaning agent 814 flowing from the first cleaning pipeline 810 into the second cleaning pipeline 820) in the second cleaning pipeline 820 can be separated from water and oil through the sixth water-oil separator.

Further, before the paint delivery mechanism 400 delivers paint to the spray gun 100, the spray gun 100 may be first cleaned by the cleaning mechanism 800, for example, to clean residual paint in the spray gun 100. Meanwhile, according to the above embodiment, the communication between the second cleaning pipeline 820 and the gear switching valve 700 can be controlled by the fifth solenoid valve 815 according to the cleaning requirement or the quality of the cleaning agent 814, and the fourth water-oil separator 824 is utilized, so that the concentration of the cleaning agent 814 can be adjusted, and a more effective cleaning effect can be achieved. In addition, depending on the cleaning requirement or the quality of the cleaning agent 814, the sixth solenoid valve 823 may block the communication between the second cleaning line 820 and the shift switching valve 700, and the cleaning agent 814 in the first cleaning line 810 may be directly transferred to the spray gun 100 through the shift switching valve 700 to be cleaned. Further, a pressure maintaining valve 480 may be further disposed on the first cleaning pipeline 810 to ensure the flow stability of the cleaning agent 814 in the first cleaning pipeline 810.

In one embodiment, the spray flow control method further comprises a blow-drying mechanism 900, and the spray gun 100 is blow-dried by the blow-drying mechanism 900. Specifically, the blow-drying mechanism 900 includes a first blow-drying pipeline 910, a second blow-drying pipeline 920, a seventh pressure regulating valve 911, an eighth pressure regulating valve 921, a seventh pressure gauge 912, an eighth pressure gauge 922, a third water-oil separator 913, a seventh electromagnetic valve 914 and an eighth electromagnetic valve 923, receives the air flow delivered by the spray gun air supply mechanism 300 through the first blow-drying pipeline 910, regulates the air pressure in the first blow-drying pipeline 910 through the seventh pressure regulating valve 911, monitors the air pressure in the first blow-drying pipeline 910 through the seventh pressure gauge 912, performs water-oil separation on the cleaning agent 814 retained in the pipeline through the third water-oil separator 913, and controls the blocking and communication between the first blow-drying pipeline 910 and the gear shift switching valve 700 through the seventh electromagnetic valve 914. Receive the air current that spray gun air feed mechanism 300 carried through the second pipeline 920 of drying, adjust the second through eighth air-vent valve 921 and weather the atmospheric pressure in the pipeline 920, through the atmospheric pressure in the eighth manometer 922 monitoring second pipeline 920 of drying, through the blocking and the intercommunication of eighth solenoid valve 923 control second pipeline 920 of drying and fender position diverter valve 700. The blow-drying mechanism 900 can selectively blow-dry by using the first blow-drying pipeline 910 (i.e., the seventh solenoid valve 914 is used to communicate the first blow-drying pipeline 910 with the shift switching valve 700, and then the shift switching valve 700 is used to communicate the first blow-drying pipeline 910 with the confluence pipeline 710), or by using the second blow-drying pipeline 920 (i.e., the eighth solenoid valve 923 is used to communicate the second blow-drying pipeline 920 with the shift switching valve 700, and then the shift switching valve 700 is used to communicate the second blow-drying pipeline 920 with the confluence pipeline 710), or by using the combination of the first blow-drying pipeline 910 and the second blow-drying pipeline 920.

In one embodiment, the spray flow control method further includes an atomization mechanism 350, and the spray gun 100 is adjusted for atomization by the atomization mechanism 350. The atomization mechanism 350 includes an atomization pipeline 351, an atomization pressure regulating valve 352, an atomization pressure gauge 353, and an atomization solenoid valve 354, receives the air flow delivered by the spray gun air supply mechanism 300 through the atomization pipeline 351, regulates the air pressure in the atomization pipeline 351 through the atomization pressure regulating valve 352, and monitors the air pressure in the atomization pipeline 351 through the atomization pressure gauge 353. The atomization line 351 is connected to the confluence line 710, that is, by performing air pressure adjustment through the atomization mechanism 350, so that the atomization amount of the pigment in the confluence line 710, that is, the atomization degree of the spray gun 100 can be changed. In addition, an electric pressure regulating valve 511 may be added to the atomization pipeline 351 to assist in regulating the air pressure in the atomization pipeline 351.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.