Automatic spraying system

Abstract

The utility model discloses an automatic spraying system, and belongs to the technical field of paint spraying. The automatic spraying system comprises an automatic spraying module which comprises a stirring tank, a diaphragm pump and a spray gun, an outlet of the stirring tank is communicated with an inlet of the diaphragm pump through a first coating pipeline, and an outlet of the diaphragm pump is communicated with the spray gun through a second coating pipeline; the automatic batching module is provided with a powder outlet and a water outlet, the powder outlet is used for outputting powder to the stirring tank, the water outlet is used for outputting water to the stirring tank, the first coating pipeline and the second coating pipeline, and the stirring tank, the first coating pipeline and the second coating pipeline can be cleaned in the coating flow direction and the reverse coating flow direction; and the automatic gas distribution module is used for outputting gas to the diaphragm pump and the spray gun. The probability of pipeline blockage caused by precipitation of fixed particles in the coating can be reduced, so that the reliability of the automatic spraying system is improved, and high spraying quality is ensured.

Description

Technical Field

[0001] This disclosure relates to the field of paint spraying technology, and in particular to an automatic spraying system. Background Technology

[0002] Coating spraying, as a key process in surface engineering, is widely used in industries such as automotive manufacturing, building decoration, and industrial protection. Among them, suspension coatings composed of liquid carriers and micron / submicron solid particles occupy an important position in the preparation of functional coatings such as heat insulation, corrosion protection, and fireproofing due to their high hiding power and functional particle loading characteristics. Spraying systems are generally used to apply suspension coatings.

[0003] In related technologies, the spraying system includes: a spraying module comprising a mixing tank, a diaphragm pump, and a spray gun, all connected via paint pipelines; a batching module for supplying a specific ratio of water and powder to the mixing tank; and a gas distribution module for supplying gas to the diaphragm pump and the spray gun. After the paint suspension is prepared in the mixing tank, the paint is transported to the spray gun via the diaphragm pump and paint pipelines for spraying.

[0004] However, when the spraying system operates for a long time or is shut down for an extended period after spraying, solid particles in the paint can easily settle in the mixing tank, diaphragm pump, spray gun, or paint pipeline, causing blockages in the spraying system's pipelines and thus affecting the spraying quality and the reliability of the spraying system. Utility Model Content

[0005] This disclosure provides an automatic spraying system that reduces the likelihood of pipeline blockage caused by the sedimentation of fixed particles in the paint, thereby improving the reliability of the automatic spraying system and ensuring high spraying quality. The technical solution includes at least the following:

[0006] On one hand, an automatic spraying system is provided, comprising: an automatic spraying module including a mixing tank, a diaphragm pump, and a spray gun, wherein the outlet of the mixing tank is connected to the inlet of the diaphragm pump through a first paint pipe, and the outlet of the diaphragm pump is connected to the spray gun through a second paint pipe; an automatic batching module having a powder outlet and a water outlet, wherein the powder outlet is used to output powder to the mixing tank, and the water outlet is used to output water to the mixing tank, the first paint pipe, and the second paint pipe, and is capable of cleaning the mixing tank, the first paint pipe, and the second paint pipe in both the direction of paint flow and the direction of paint flow; and an automatic gas distribution module for outputting gas to the diaphragm pump and the spray gun.

[0007] Optionally, the automatic spraying module further includes two anti-settling filters, namely a first anti-settling filter and a second anti-settling filter. The first anti-settling filter is disposed in the first paint pipeline, which includes a first sub-pipeline and a second sub-pipeline. The inlet of the first anti-settling filter is connected to the outlet of the mixing tank through the first sub-pipeline, and the outlet of the first anti-settling filter is connected to the inlet of the diaphragm pump through the second sub-pipeline. The second anti-settling filter is disposed in the second paint pipeline, which includes a third sub-pipeline and a fourth sub-pipeline. The inlet of the second anti-settling filter is connected to the outlet of the diaphragm pump through the third sub-pipeline, and the outlet of the second anti-settling filter is connected to the spray gun through the fourth sub-pipeline.

[0008] Optionally, the outlet is connected to the main cleaning pipe, the main cleaning pipe is connected to the first sub-pipe via a first cleaning pipe, the main cleaning pipe is connected to the second sub-pipe via a second cleaning pipe, and the main cleaning pipe is connected to the fourth sub-pipe via a third cleaning pipe; the mixing tank, the first anti-sedimentation filter, and the second anti-sedimentation filter all have a drain outlet.

[0009] Optionally, the drain outlet of the mixing tank is connected to the first drain pipe, the drain outlet of the first anti-sedimentation filter is connected to the second drain pipe, and the drain outlet of the second anti-sedimentation filter is connected to the third drain pipe; a normally closed electric ball valve is provided in the first drain pipe, the second drain pipe, the third drain pipe, the first cleaning pipe, the second cleaning pipe, and the third cleaning pipe.

[0010] Optionally, a first planar membrane pressure sensor is installed in the first sewage discharge pipe, and the first planar membrane pressure sensor is located between the mixing tank and the normally closed electric ball valve in the first sewage discharge pipe; a second planar membrane pressure sensor and an electromagnetic flow meter are sequentially installed in the fourth sub-pipe, the second planar membrane pressure sensor is located between the second anti-sedimentation filter and the third cleaning pipe, and the electromagnetic flow meter is located between the third cleaning pipe and the spray gun.

[0011] Optionally, the anti-sedimentation filter includes a housing, a filter screen, a stirring blade, a rotating shaft, and a motor. The filter screen is disposed within the housing, forming a first cavity within the filter screen. A second cavity is formed between the filter screen and the housing. The inlet of the anti-sedimentation filter is sequentially connected to the first cavity, the second cavity, and the outlet of the anti-sedimentation filter. The stirring blade is disposed in the second cavity. One end of the rotating shaft is connected to the stirring blade, and the other end of the rotating shaft is rotatably connected to the output shaft of the motor via a synchronous belt.

[0012] Optionally, the automatic batching module also has a feeding port and a water supply port. The feeding port is connected to the powder outlet through a feeding pipe, and a vibrating screen and a twin-screw loss-in-weight scale are sequentially installed in the feeding pipe. The water supply port is connected to the water outlet through a water supply pipe, and a manual ball valve, a turbine flow meter, and a normally closed electric ball valve are sequentially installed in the water supply pipe.

[0013] Optionally, the outlet is connected to the inlet of the mixing tank via an inlet pipe, and a normally closed electric ball valve is installed in the inlet pipe.

[0014] Optionally, the automatic gas distribution module has a gas supply port, a first gas outlet, and a second gas outlet. The gas supply port is connected to a main gas supply pipeline. The main gas supply pipeline is sequentially equipped with a first two-position three-way manual valve, a water-gas separator, and a gas pressure sensor. The main gas supply pipeline is connected to the first gas outlet through a first gas supply pipeline, and the main gas supply pipeline is connected to the second gas outlet through a second gas supply pipeline. The first gas outlet is connected to the air inlet of the diaphragm pump, and the second gas outlet is connected to the air inlet of the spray gun.

[0015] Optionally, the first gas supply pipeline is sequentially provided with a first piezoelectric proportional valve, a first two-position three-way solenoid valve, and a second two-position three-way manual valve; the second gas supply pipeline is sequentially provided with a second piezoelectric proportional valve, a second two-position three-way solenoid valve, and a third two-position three-way manual valve.

[0016] The beneficial effects of the technical solutions provided in this disclosure include at least the following:

[0017] In this embodiment, an automatic spraying module, an automatic batching module, and an automatic air distribution module can be used to complete a highly automated paint spraying operation. The outlet of the automatic batching module can output water to the mixing tank, the first paint pipe, and the second paint pipe, and can clean the mixing tank, the first paint pipe, and the second paint pipe both in the direction of paint flow and in the opposite direction of paint flow. That is, water can thoroughly clean along multiple flow directions, which can reduce the probability of fixed particles in the paint settling and causing pipe blockage, thereby improving the reliability of the automatic spraying system and ensuring high spraying quality. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1This is a schematic diagram of the structure of an automatic spraying system provided in an embodiment of this disclosure;

[0020] Figure 2 This is a schematic diagram of the structure of an automatic spraying module provided in an embodiment of this disclosure;

[0021] Figure 3 This is a schematic diagram of the structure of an automatic batching module provided in an embodiment of this disclosure;

[0022] Figure 4 This is a schematic diagram of the structure of an automatic gas distribution module provided in an embodiment of this disclosure;

[0023] Figure 5 This is a schematic diagram of the structure of an anti-sedimentation filter provided in an embodiment of this disclosure;

[0024] Figure 6 This is a front view of an anti-sedimentation filter provided in an embodiment of this disclosure;

[0025] Figure 7 yes Figure 6 A schematic diagram of the cross-sectional structure at the mid-section line AA.

[0026] Figure label:

[0027] 1: Automatic spraying module; 2: Automatic batching module; 3: Automatic air distribution module; 10: Mixing tank; 11: Diaphragm pump; 12: Spray gun; 13: First anti-sedimentation filter; 14: Second anti-sedimentation filter; 151: Housing; 152: Filter screen; 153: Mixing blades; 154: Rotating shaft; 155: Motor; 156: First cavity; 157: Second cavity; 158: Synchronous belt; 20: First paint pipe; 201: First sub-pipe; 202: Second sub-pipe; 21: Second paint pipe; 211: Third sub-pipe; 212: Fourth sub-pipe; 220: Main cleaning pipe; 221: First cleaning pipe; 222: Second cleaning pipe; 223: Third cleaning pipe; 231: First sewage pipe; 232: Second sewage pipe; 233: Third sewage pipe; 24: Water inlet pipe; 25: Overflow pipe; 30: First... 31: Normally closed two-way electric ball valve; 32: Second normally closed two-way electric ball valve; 33: Third normally closed two-way electric ball valve; 34: Fourth normally closed two-way electric ball valve; 35: Fifth normally closed two-way electric ball valve; 36: Sixth normally closed two-way electric ball valve; 37: Seventh normally closed two-way electric ball valve; 38: Eighth normally closed two-way electric ball valve; 39: Ninth normally closed two-way electric ball valve; 40: First planar diaphragm pressure sensor; Sensors; 41: Electromagnetic flow meter; 50: Powder outlet; 51: Water outlet; 52: Feeding port; 53: Water supply port; 54: Feeding pipe; 541: Vibrating screen; 542: Twin-screw loss-in-weight scale; 55: Water supply pipe; 551: Manual ball valve; 552: Turbine flow meter; 553: Tenth normally closed two-way electric ball valve; 60: Air supply port; 61: First air outlet; 62: Second air outlet; 630: Main air supply pipe; 631: First gas supply pipeline; 632: Second gas supply pipeline; 640: First two-position three-way manual valve; 641: Second two-position three-way manual valve; 642: Third two-position three-way manual valve; 643: Water-gas separator; 644: Gas pressure sensor; 645: First piezoelectric proportional valve; 646: Second piezoelectric proportional valve; 647: First two-position three-way solenoid valve; 648: Second two-position three-way solenoid valve. Detailed Implementation

[0028] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the element or object preceding “comprising” or “including” encompasses the element or object listed following “comprising” or “including” and its equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. “Up,” “down,” “left,” “right,” etc., are used only to indicate relative positional relationships, which may change accordingly when the absolute position of the described object changes. A and / or B indicates the presence of three cases: A, B, and A and B.

[0029] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0030] Figure 1 This is a schematic diagram of the structure of an automatic spraying system provided in an embodiment of this disclosure. Figure 2 This is a schematic diagram of the structure of an automatic spraying module provided in an embodiment of this disclosure. Figure 3 This is a schematic diagram of the structure of an automatic batching module provided in an embodiment of this disclosure. Figure 4 This is a schematic diagram of the structure of an automatic gas distribution module provided in an embodiment of this disclosure. See also... Figures 1 to 4 The automatic spraying system includes: an automatic spraying module 1, comprising a mixing tank 10, a diaphragm pump 11, and a spray gun 12, wherein the outlet of the mixing tank 10 is connected to the inlet of the diaphragm pump 11 via a first paint pipe 20, and the outlet of the diaphragm pump 11 is connected to the spray gun 12 via a second paint pipe 21; an automatic batching module 2, having a powder outlet 50 and a water outlet 51, wherein the powder outlet 50 is used to output powder to the mixing tank 10, and the water outlet 51 is used to output water to the mixing tank 10, the first paint pipe 20, and the second paint pipe 21, and can clean the mixing tank 10, the first paint pipe 20, and the second paint pipe 21 in both the direction of paint flow and the direction of paint flow; and an automatic gas distribution module 3, used to output gas to the diaphragm pump 11 and the spray gun 12.

[0031] In this embodiment, an automated paint spraying operation can be completed by setting up an automatic spraying module 1, an automatic batching module 2, and an automatic air distribution module 3. The outlet 51 of the automatic batching module 2 can output water to the mixing tank 10, the first paint pipe 20, and the second paint pipe 21, and can clean the mixing tank 10, the first paint pipe 20, and the second paint pipe 21 both in the direction of paint flow and against the direction of paint flow. That is, water can thoroughly clean along multiple flow directions, which can reduce the probability of fixed particles in the paint settling and causing pipe blockage, thereby improving the reliability of the automatic spraying system and ensuring high spraying quality.

[0032] Optionally, the automatic spraying system can spray a special non-metallic refractory suspension for use on silicon steel surfaces.

[0033] In other embodiments, the automatic spraying system may also spray other types of suspensions, which are not limited in this disclosure.

[0034] Optionally, the automatic spraying module 1 further includes two anti-settling filters, namely a first anti-settling filter 13 and a second anti-settling filter 14. The first anti-settling filter 13 is disposed in the first paint pipe 20, which includes a first sub-pipe 201 and a second sub-pipe 202. The inlet of the first anti-settling filter 13 is connected to the outlet of the mixing tank 10 through the first sub-pipe 201, and the outlet of the first anti-settling filter 13 is connected to the inlet of the diaphragm pump 11 through the second sub-pipe 202. The second anti-settling filter 14 is disposed in the second paint pipe 21, which includes a third sub-pipe 211 and a fourth sub-pipe 212. The inlet of the second anti-settling filter 14 is connected to the outlet of the diaphragm pump 11 through the third sub-pipe 211, and the outlet of the second anti-settling filter 14 is connected to the spray gun 12 through the fourth sub-pipe 212.

[0035] By installing a first anti-settling filter 13 in the first paint pipeline 20 and a second anti-settling filter 14 in the second paint pipeline 21, during automatic paint spraying, the paint flows sequentially from the mixing tank 10 through the first anti-settling filter 13, the diaphragm pump 11, and the second anti-settling filter 14, and is then sprayed through the spray gun 12. This anti-settling filter effectively filters out large particles in the paint, reducing the likelihood of pipeline blockage and further improving the reliability of the automatic spraying system.

[0036] Figure 5 This is a schematic diagram of the structure of an anti-sedimentation filter provided in an embodiment of this disclosure. Figure 6 This is a front view of an anti-sedimentation filter provided in an embodiment of this disclosure. Figure 7 yes Figure 6 A schematic diagram of the cross-sectional structure at section line AA. (See also...) Figures 5 to 7 The anti-sedimentation filter includes a housing 151, a filter screen 152, a stirring blade 153, a rotating shaft 154, and a motor 155. The filter screen 152 is disposed within the housing 151, forming a first cavity 156. A second cavity 157 is formed between the filter screen 152 and the housing 151. The inlet of the anti-sedimentation filter is sequentially connected to the first cavity 156, the second cavity 157, and the outlet of the anti-sedimentation filter. The stirring blade 153 is disposed in the second cavity 157. One end of the rotating shaft 154 is connected to the stirring blade 153, and the other end of the rotating shaft 154 is rotatably connected to the output shaft of the motor 155 via a synchronous belt 158. In this way, as the paint flows from the inlet to the outlet of the anti-sedimentation filter, it can be filtered by the filter screen 152 to prevent large particles of powder from flowing out of the first chamber 156. Then the paint enters the second chamber 157 and is stirred by the stirring blades 153, which can ensure the suspension of the paint and reduce the aggregation and sedimentation of solid particles. This further reduces the deposition and residue of paint in the automatic spraying system, which helps to extend the maintenance cycle of the automatic spraying system and improve its lifespan and reliability.

[0037] For example, housing 151 is a cylindrical housing.

[0038] Optionally, see Figures 1 to 4 The outlet 51 is connected to the main cleaning pipe 220. The main cleaning pipe 220 is connected to the first sub-pipe 201 via the first cleaning pipe 221, the main cleaning pipe 220 is connected to the second sub-pipe 202 via the second cleaning pipe 222, and the main cleaning pipe 220 is connected to the fourth sub-pipe 212 via the third cleaning pipe 223. The outlet 51 is connected to the inlet of the mixing tank 10 via the inlet pipe 24. The mixing tank 10, the first anti-sedimentation filter 13, and the second anti-sedimentation filter 14 all have drain ports. In this way, water can thoroughly clean each pipe and component along multiple flow directions, thereby reducing the chance of pipe blockage.

[0039] Optionally, the drain outlet of the mixing tank 10 is connected to the first drain pipe 231, the drain outlet of the first anti-sedimentation filter 13 is connected to the second drain pipe 232, and the drain outlet of the second anti-sedimentation filter 14 is connected to the third drain pipe 233. Normally closed electric ball valves are installed in the first drain pipe 231, the second drain pipe 232, the third drain pipe 233, the first cleaning pipe 221, the second cleaning pipe 222, and the third cleaning pipe 223. A normally closed electric ball valve is installed in the water inlet pipe 24.

[0040] For example, a first normally closed two-way electric ball valve 30 is installed in the first sewage pipe 231, a second normally closed two-way electric ball valve 31 is installed in the second sewage pipe 232, a third normally closed two-way electric ball valve 32 is installed in the third sewage pipe 233, a fourth normally closed two-way electric ball valve 33 is installed in the first cleaning pipe 221, a fifth normally closed two-way electric ball valve 34 is installed in the second cleaning pipe 222, a sixth normally closed two-way electric ball valve 35 is installed in the third cleaning pipe 223, and a ninth normally closed two-way electric ball valve 38 is installed in the water inlet pipe 24. By installing multiple normally closed electric ball valves, the opening and closing of each pipe can be automatically controlled, which is beneficial to realize automatic batching and mixing, automatic spraying and automatic cleaning, thereby improving the automation level of the automatic spraying system. Furthermore, by opening and closing each normally closed electric ball valve, localized and graded cleaning of the automatic spraying system can be achieved, which is beneficial to improving the cleaning effect.

[0041] For example, the first sewage pipe 231, the second sewage pipe 232 and the third sewage pipe 233 are all connected to the main sewage outlet.

[0042] In this embodiment of the disclosure, the cleaning water provided by the water outlet 51 can have the following seven cleaning modes:

[0043] The first method involves opening the ninth normally closed two-way electric ball valve 38, allowing cleaning water to flow from the outlet 51 through the inlet pipe 24 into the mixing tank 10 for stirring. Then, the first normally closed two-way electric ball valve 30 is opened, allowing cleaning water to be discharged from the first drain pipe 231, cleaning the mixing tank 10 in the direction of the paint flow. After cleaning, the first normally closed two-way electric ball valve 30, the ninth normally closed two-way electric ball valve 38, and the stirring motor of the mixing tank 10 are closed, and the supply of cleaning water is stopped.

[0044] The second method involves opening the fourth normally closed two-way electric ball valve 33. Cleaning water flows sequentially from outlet 51 through the main cleaning pipe 220, the first cleaning pipe 221, and the first sub-pipe 201 into the mixing tank 10 for stirring. Then, the first normally closed two-way electric ball valve 30 is opened, and cleaning water is discharged from the first drain pipe 231, flowing against the direction of the coating to clean the portion of the first sub-pipe 201 and the mixing tank 10. After cleaning, the first normally closed two-way electric ball valve 30, the fourth normally closed two-way electric ball valve 33, and the stirring motor of the mixing tank 10 are closed, and the supply of cleaning water is stopped.

[0045] The third method involves opening the fourth normally closed two-way electric ball valve 33 and the second normally closed two-way electric ball valve 31. Cleaning water flows sequentially from the outlet 51 through the main cleaning pipe 220, the first cleaning pipe 221, the first sub-pipe 201, and the first anti-sedimentation filter 13, then exits through the second drain pipe 232, cleaning the portion of the first sub-pipe 201 and the first anti-sedimentation filter 13 in the direction of the paint flow. After cleaning, the second normally closed two-way electric ball valve 31 and the fourth normally closed two-way electric ball valve 33 are closed, and the water supply for cleaning is stopped.

[0046] Fourthly, open the fifth normally closed two-way electric ball valve 34 and the second normally closed two-way electric ball valve 31. Cleaning water flows sequentially from the outlet 51 through the main cleaning pipe 220, the second cleaning pipe 222, the second sub-pipe 202, and the first anti-sedimentation filter 13, and then exits from the second drain pipe 232. The water flows against the direction of the coating flow to clean the portion of the second sub-pipe 202 and the first anti-sedimentation filter 13. After cleaning, close the second normally closed two-way electric ball valve 31 and the fifth normally closed two-way electric ball valve 34, and stop the supply of cleaning water.

[0047] Fifthly, open the fifth normally closed two-way electric ball valve 34 and the third normally closed two-way electric ball valve 32. Simultaneously, the automatic gas distribution module 3 outputs gas to the diaphragm pump 11. Cleaning water flows from the outlet 51 sequentially through the main cleaning pipe 220, the second cleaning pipe 222, the second sub-pipe 202, the diaphragm pump 11, the third sub-pipe 211, and the second anti-sedimentation filter 14, and then is discharged from the third drain pipe 233. Following the flow direction of the paint, the second sub-pipe 202, the diaphragm pump 11, the third sub-pipe 211, and the second anti-sedimentation filter 14 are cleaned. After cleaning, close the third normally closed two-way electric ball valve 32 and the fifth normally closed two-way electric ball valve 34, and stop the supply of cleaning water and gas to the diaphragm pump 11.

[0048] The sixth method involves opening the sixth normally closed two-way electric ball valve 35 and the third normally closed two-way electric ball valve 32. Cleaning water flows sequentially from the outlet 51 through the main cleaning pipe 220, the third cleaning pipe 223, the fourth sub-pipe 212, and the second anti-sedimentation filter 14, then exits through the third drain pipe. The water flows against the flow direction to clean the portion of the fourth sub-pipe 212 and the second anti-sedimentation filter 14. After cleaning, the third normally closed two-way electric ball valve 32 and the sixth normally closed two-way electric ball valve 35 are closed, and the water supply for cleaning is stopped.

[0049] The seventh method involves opening the sixth normally closed two-way electric ball valve 35, simultaneously supplying gas to the spray gun 12 via the automatic gas distribution module 3. Cleaning water flows sequentially from the outlet 51 through the main cleaning pipe 220, the second cleaning pipe 223, and the fourth sub-pipe 212, before being sprayed out from the spray gun 12. This water flows in the direction of the paint flow, cleaning the portion of the fourth sub-pipe 212 and the spray gun 12. After cleaning, the sixth normally closed two-way electric ball valve 35 is closed, and the supply of cleaning water and gas to the spray gun 12 is stopped.

[0050] It should be noted that, since the nozzle of the spray gun 12 is relatively small, when cleaning the automatic spraying system, the spray gun 12 can be cleaned last after the first to sixth cleaning methods are completed. This can reduce the risk of the nozzle of the spray gun 12 being blocked by fixed particles carried by the sewage during the upstream cleaning process.

[0051] Optionally, a first planar membrane pressure sensor 39 is installed in the first sewage discharge pipe 231, and the first planar membrane pressure sensor 39 is located between the mixing tank 10 and the normally closed electric ball valve in the first sewage discharge pipe 231. A second planar membrane pressure sensor 40 and an electromagnetic flow meter 41 are sequentially installed in the fourth sub-pipe 212, the second planar membrane pressure sensor 40 being located between the second anti-sedimentation filter 14 and the third cleaning pipe 223, and the electromagnetic flow meter 41 being located between the third cleaning pipe 223 and the spray gun 12.

[0052] The first planar membrane pressure sensor 39 can monitor the blockage during the cleaning process of the mixing tank 10. The second planar membrane pressure sensor 40 and the electromagnetic flow meter 41 can monitor the blockage of the automatic spraying system. For example, if the first planar membrane pressure sensor 39 does not detect pressure during the cleaning process of the mixing tank 10, it indicates that the drain port of the mixing tank 10 or the first sub-pipe 201 near the mixing tank 10 is blocked. If the second planar membrane pressure sensor 40 detects pressure during the spraying operation, but the electromagnetic flow meter 41 does not detect flow, it indicates that the section of the fourth sub-pipe 212 from the second planar membrane pressure sensor 40 to the spray gun 12 is blocked. If the second planar membrane pressure sensor 40 does not detect pressure and the electromagnetic flow meter 41 does not detect flow during the spraying operation, it indicates that the paint path upstream of the second planar membrane pressure sensor 40 to the mixing tank 10 is blocked.

[0053] For example, the mixing tank 10 is provided with an overflow port, which is connected to the overflow pipe 25.

[0054] For example, the inner walls of the mixing tank 10 and the inner walls of each pipe are provided with a Teflon coating. This reduces the chance of coating adhesion.

[0055] For example, each pipeline can use mostly straight pipes to reduce bends or twists, and multiple inspection ports can be set in the pipelines to facilitate maintenance and repair.

[0056] For example, a seventh normally closed two-way electric ball valve 36 is provided in the first sub-pipe 201, and the seventh normally closed two-way electric ball valve 36 is located between the first cleaning pipe 221 and the first anti-sedimentation filter 13. An eighth normally closed two-way electric ball valve 37 is provided in the fourth sub-pipe 212, and the eighth normally closed two-way electric ball valve 37 is located between the electromagnetic flowmeter 41 and the spray gun 12.

[0057] Optionally, the automatic batching module 2 also includes a feeding port 52 and a water supply port 53. The feeding port 52 is connected to the powder outlet 50 via a feeding pipe 54, in which a vibrating screen 541 and a twin-screw loss-in-weight scale 542 are sequentially installed. The water supply port 53 is connected to the water outlet 51 via a water supply pipe 55, in which a manual ball valve 551, a turbine flow meter 552, and a normally closed electric ball valve are sequentially installed. For example, the water supply pipe 55 may contain a manual ball valve 551, a turbine flow meter 552, and a tenth normally closed two-way electric ball valve 553.

[0058] The vibrating screen 541 can filter large solid powder particles, the twin-screw loss-in-weight scale 542 can measure the weight of solid powder required in the batching according to the proportion, the manual ball valve 551 can be manually controlled to open and close during maintenance to control the water supply at the water inlet 53, and the turbine flow meter 552 can measure the water required in the batching according to the proportion. During automatic spraying and automatic cleaning, the opening and closing of the water outlet 51 can be automatically controlled by the tenth normally closed two-way electric ball valve 553.

[0059] It should be noted that only one feeding pipe 54 and one water supply pipe 55 are provided in this embodiment. In other embodiments, more feeding pipes 54 or water supply pipes 55 may be provided as needed. This disclosure does not impose any restrictions on this.

[0060] In this embodiment, the turbine flow meter 552, the second planar membrane pressure sensor 39, and the electromagnetic flow meter 40 work together to monitor blockages and accurately locate them, thereby reducing the difficulty of troubleshooting blockages. For example, if the second planar membrane pressure sensor 40 does not detect pressure and the electromagnetic flow meter 41 does not detect flow during the spraying process, it indicates that the paint path from the second planar membrane pressure sensor 40 to the mixing tank 10 is blocked. In this case, the first to sixth cleaning methods described above can be used for cleaning. If the turbine flow meter 552 does not detect flow during the cleaning process, it indicates that the pipeline being cleaned by that cleaning method is blocked.

[0061] Optionally, the automatic gas distribution module 3 has a gas supply port 60, a first gas outlet 61, and a second gas outlet 62. The gas supply port 60 is connected to the main gas supply pipeline 630, in which a first two-position three-way manual valve 640, a water-gas separator 643, and a gas pressure sensor 644 are sequentially arranged. The main gas supply pipeline 630 is connected to the first gas outlet 61 through the first gas supply pipeline 631, and the main gas supply pipeline 630 is connected to the second gas outlet 62 through the second gas supply pipeline 632. The first gas outlet 61 is connected to the air inlet of the diaphragm pump 11, and the second gas outlet 62 is connected to the air inlet of the spray gun 12.

[0062] The first two-position three-way manual valve 640 allows for manual control of the opening and closing during maintenance to control the air supply to the air supply port 60. The water-air separator 643 can reduce the moisture in the gas output by the automatic air distribution module 3, ensuring high spraying quality. The gas pressure sensor 644 can monitor the air supply pressure in the main air supply pipeline 630. The first air supply pipeline 631 and the second air supply pipeline 632 can supply air independently to the diaphragm pump 11 and the spray gun 12 respectively.

[0063] Optionally, a first piezoelectric proportional valve 645, a first two-position three-way solenoid valve 647, and a second two-position three-way manual valve 641 are sequentially arranged in the first gas supply pipeline 631. A second piezoelectric proportional valve 646, a second two-position three-way solenoid valve 648, and a third two-position three-way manual valve 642 are sequentially arranged in the second gas supply pipeline 632.

[0064] The first piezoelectric proportional valve 645 controls the air supply pressure to the diaphragm pump 11 in the first air supply pipe 631. The first two-position three-way solenoid valve 647 automatically controls the opening and closing of the air supply to the diaphragm pump 11. The second two-position three-way manual valve 641 allows for manual control of the opening and closing of the first air outlet 61 during maintenance. The second piezoelectric proportional valve 646 controls the air supply pressure to the spray gun 12 in the second air supply pipe 632. The second two-position three-way solenoid valve 648 automatically controls the opening and closing of the air supply to the spray gun 12. The third two-position three-way manual valve 642 allows for manual control of the opening and closing of the second air outlet 62 during maintenance.

[0065] For example, the gas pressure sensor 644, the first piezoelectric proportional valve 645, the second piezoelectric proportional valve 646, the first two-position three-way solenoid valve 647, and the second two-position three-way solenoid valve 648 can upload the gas supply data of the automatic gas distribution module 3 to the central control terminal in real time, which is conducive to realizing the efficient automation of the gas distribution function.

[0066] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. An automatic spraying system, characterized in that, include: An automatic spraying module includes a mixing tank, a diaphragm pump, and a spray gun. The outlet of the mixing tank is connected to the inlet of the diaphragm pump through a first paint pipe, and the outlet of the diaphragm pump is connected to the spray gun through a second paint pipe. The automatic batching module has a powder outlet and a water outlet. The powder outlet is used to output powder to the mixing tank, and the water outlet is used to output water to the mixing tank, the first coating pipe and the second coating pipe. It can also clean the mixing tank, the first coating pipe and the second coating pipe in both the direction of coating flow and the direction of coating flow. An automatic gas distribution module is used to output gas to the diaphragm pump and the spray gun.

2. The automatic spraying system according to claim 1, characterized in that, The automatic spraying module also includes two anti-settling filters, namely a first anti-settling filter and a second anti-settling filter. The first anti-settling filter is disposed in the first coating pipeline, the first coating pipeline includes a first sub-pipeline and a second sub-pipeline, the inlet of the first anti-settling filter is connected to the outlet of the mixing tank through the first sub-pipeline, and the outlet of the first anti-settling filter is connected to the inlet of the diaphragm pump through the second sub-pipeline; The second anti-settling filter is disposed in the second paint pipeline, which includes a third sub-pipeline and a fourth sub-pipeline. The inlet of the second anti-settling filter is connected to the outlet of the diaphragm pump through the third sub-pipeline, and the outlet of the second anti-settling filter is connected to the spray gun through the fourth sub-pipeline.

3. The automatic spraying system according to claim 2, characterized in that, The water outlet is connected to the main cleaning pipe, the main cleaning pipe is connected to the first sub-pipe through the first cleaning pipe, the main cleaning pipe is connected to the second sub-pipe through the second cleaning pipe, and the main cleaning pipe is connected to the fourth sub-pipe through the third cleaning pipe. The mixing tank, the first anti-sedimentation filter, and the second anti-sedimentation filter all have drain outlets.

4. The automatic spraying system according to claim 3, characterized in that, The drain outlet of the mixing tank is connected to the first drain pipe, the drain outlet of the first anti-sedimentation filter is connected to the second drain pipe, and the drain outlet of the second anti-sedimentation filter is connected to the third drain pipe. Normally closed electric ball valves are installed in the first sewage pipe, the second sewage pipe, the third sewage pipe, the first cleaning pipe, the second cleaning pipe, and the third cleaning pipe.

5. The automatic spraying system according to claim 4, characterized in that, A first planar membrane pressure sensor is installed in the first sewage discharge pipe. The first planar membrane pressure sensor is located between the mixing tank and the normally closed electric ball valve in the first sewage discharge pipe. The fourth sub-pipe is sequentially equipped with a second planar membrane pressure sensor and an electromagnetic flow meter. The second planar membrane pressure sensor is located between the second anti-sedimentation filter and the third cleaning pipe, and the electromagnetic flow meter is located between the third cleaning pipe and the spray gun.

6. The automatic spraying system according to any one of claims 2 to 5, characterized in that, The anti-sedimentation filter includes a housing, a filter screen, stirring blades, a rotating shaft, and a motor. The filter screen is disposed inside the housing, a first cavity is formed inside the filter screen, a second cavity is formed between the filter screen and the housing, and the inlet of the anti-sedimentation filter is sequentially connected to the first cavity, the second cavity and the outlet of the anti-sedimentation filter; The stirring blade is disposed in the second cavity, one end of the rotating shaft is connected to the stirring blade, and the other end of the rotating shaft is rotatably connected to the output shaft of the motor via a synchronous belt.

7. The automatic spraying system according to any one of claims 1 to 5, characterized in that, The automatic batching module also has a feeding port and a water supply port. The feeding port and the powder outlet are connected through a feeding pipe, and a vibrating screen and a twin-screw loss-in-weight scale are sequentially installed in the feeding pipe; The water supply port and the water outlet are connected by a water supply pipe, and a manual ball valve, a turbine flow meter and a normally closed electric ball valve are sequentially installed in the water supply pipe.

8. The automatic spraying system according to claim 7, characterized in that, The outlet is connected to the inlet of the mixing tank via an inlet pipe, and a normally closed electric ball valve is installed in the inlet pipe.

9. The automatic spraying system according to any one of claims 1 to 5 and claim 8, characterized in that, The automatic gas distribution module has a gas supply port, a first gas outlet, and a second gas outlet. The air supply port is connected to the main air supply pipeline. The main air supply pipeline is sequentially equipped with a first two-position three-way manual valve, a water-air separator, and a gas pressure sensor. The main air supply pipeline is connected to the first air outlet through a first air supply pipeline. The main air supply pipeline is connected to the second air outlet through a second air supply pipeline. The first air outlet is connected to the air inlet of the diaphragm pump, and the second air outlet is connected to the air inlet of the spray gun.

10. The automatic spraying system according to claim 9, characterized in that, The first gas supply pipeline is sequentially equipped with a first piezoelectric proportional valve, a first two-position three-way solenoid valve, and a second two-position three-way manual valve. The second gas supply pipeline is sequentially equipped with a second piezoelectric proportional valve, a second two-position three-way solenoid valve, and a third two-position three-way manual valve.

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