Paint spraying equipment

Abstract

This disclosure relates to the field of coating application equipment technology and proposes a coating spraying device. The device includes a material storage assembly, a spray gun assembly, a transmission pipeline, and a circulation assembly. The material storage assembly includes a first storage body and a first heating element, the first heating element being used to heat the coating within the storage space formed by the first storage body. The spray gun assembly includes a spray gun body and a preheating structure, the preheating structure including a second storage body and a second heating element. The preheating chamber formed by the second storage body is connected to the liquid inlet of the spray gun body, and the second heating element heats the coating within the preheating chamber. The transmission pipeline includes an inner pipeline and an outer pipeline, with a jacketed cavity formed between them. The inner pipeline connects the material storage space and the preheating cavity. The circulation assembly includes a third storage body, a third heating element, and a circulation pump. The third storage body stores a heat-conducting medium, the third heating element heats the heat-conducting medium, and the circulation pump drives the heat-conducting medium to circulate within the jacketed cavity. This device has a good spraying effect.

Description

Technical Field

[0001] This invention relates to the field of coating application equipment, and more specifically to a coating spraying device. Background Technology

[0002] Low temperatures can degrade paint performance, and paint in the spray gun is prone to clumping and clogging. Existing spraying equipment only has heating components in the storage tank. This method not only causes significant heat loss of the paint during transportation but also causes localized overheating of the paint, ultimately leading to a decline in paint performance.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0004] This disclosure provides a paint spraying apparatus, comprising: a material storage assembly, a spray gun assembly, and a transmission pipeline. The material storage assembly includes a first storage body and a first heating element. The first storage body forms a storage space for storing paint, and the first heating element heats the paint within the storage space. The spray gun assembly includes a spray gun body and a preheating structure. The preheating structure includes a second storage body and a second heating element. The second storage body forms a preheating cavity, which communicates with the liquid inlet of the spray gun body. The second heating element heats the paint within the preheating cavity. The transmission pipeline includes an inner pipeline and an outer pipeline. The inner pipeline communicates between the storage space and the preheating cavity, and the outer pipeline is sleeved outside the inner pipeline. A jacketed cavity is formed between the inner and outer pipelines. The circulation assembly includes a third storage body, a third heating element, and a circulation pump. The third storage body stores a heat-conducting medium, the third heating element heats the heat-conducting medium, and the circulation pump drives the heat-conducting medium to circulate within the jacketed cavity.

[0005] In one exemplary embodiment of this disclosure, the paint spraying apparatus further includes: A first temperature sensor is located inside the first storage unit; The second temperature sensor is located inside the second storage unit; The third temperature sensor is located within the third storage unit; A temperature control system, comprising a controller, a first relay, a second relay, and a third relay, wherein the controller is configured to control the power of the first heating element using the first relay based on temperature information collected by the first temperature sensor, to control the power of the second heating element using the second relay based on temperature information collected by the second temperature sensor, and to control the power of the third heating element using the third relay based on temperature information collected by the third temperature sensor.

[0006] In one exemplary embodiment of this disclosure, the temperature control system further includes: A control panel, connected to the controller, includes a display area and a button area. The display area is used to display temperature information collected by the first temperature sensor, the second temperature sensor, and the third temperature sensor. The button area is provided with button units, which are used to provide the controller with a first temperature control signal, a second temperature control signal, and a third temperature control signal. The controller is used to control the power of the first heating element using the first relay according to the first temperature control signal, to control the power of the second heating element using the second relay according to the second temperature control signal, and to control the power of the third heating element using the third relay according to the third temperature control signal. The paint spraying device also includes: A control box having a mounting port, wherein the control panel is disposed at the mounting port; A cover plate is sealed over the mounting opening to isolate the control panel on the side of the cover plate facing the mounting opening. At least a portion of the cover plate protrudes outward from the control box, and the button unit is fitted with the protruding portion of the cover plate.

[0007] In one exemplary embodiment of this disclosure, the temperature control system further includes: The alarm device, and the controller is further configured to control the alarm device, the first relay, the second relay, and the third relay according to the temperature information collected by the first temperature sensor, the second temperature sensor, and the third temperature sensor using preset rules; The preset rules include: when the temperature information collected by the first temperature sensor is greater than the first threshold temperature, the controller controls the alarm device to sound an alarm and controls the first relay to turn off the first heating element; when the temperature information collected by the second temperature sensor is greater than the second threshold temperature, the controller controls the alarm device to sound an alarm and controls the second relay to turn off the second heating element; when the temperature information collected by the third temperature sensor is greater than the third threshold temperature, the controller controls the alarm device to sound an alarm and controls the third relay to turn off the third heating element, wherein the third threshold temperature is greater than the first threshold temperature and the second threshold temperature.

[0008] In one exemplary embodiment of this disclosure, the first heating element includes: An electric heating layer covers at least a portion of the outer surface of the first storage body, the electric heating layer being used to convert electrical energy into heat energy; The storage assembly also includes: An insulation layer covers the side of the electric heating layer that is away from the first storage body.

[0009] In one exemplary embodiment of this disclosure, the second heating element includes: a positive temperature coefficient thermistor, the positive temperature coefficient thermistor being located on the outer surface of the second storage body, and the second heating element utilizing the positive temperature coefficient thermistor for heating. And / or, the third heating element includes an electric heating rod, the third heating element being located inside the third storage body.

[0010] In one exemplary embodiment of this disclosure, the paint spraying apparatus further includes: A mobile platform, comprising: a drive structure and a carrying platform, wherein the drive structure is used to drive the carrying platform to move, and at least a portion of the material storage assembly, spray gun assembly, transmission pipeline, and circulation assembly are located on the carrying platform.

[0011] In an exemplary embodiment of this disclosure, the outer diameter of the inner pipe is d1, the inner diameter of the outer pipe is d2, and (d2-d1) / d1 is greater than or equal to 0.6 and less than or equal to 1.

[0012] In one exemplary embodiment of this disclosure, the transmission channel further includes: An insulation sleeve is fitted over the outer side of the outer pipe, and the thermal conductivity of the insulation sleeve is less than that of the outer pipe.

[0013] In an exemplary embodiment of this disclosure, the first temperature sensor includes a first sub-temperature sensor and a second sub-temperature sensor; The first storage unit also includes a feeding port and a discharging port; The first sub-temperature sensor is located on the inner wall of the first storage body near the discharge port, and the second sub-temperature sensor is located on the inner wall between the feed port and the discharge port.

[0014] In this exemplary embodiment, on the one hand, the device can heat the paint throughout the entire process of transporting the paint from the storage space to the preheating chamber. This setting can reduce the heat loss of the paint during the transport process, thereby effectively avoiding the deterioration of paint performance in low-temperature environments, such as increased paint viscosity and decreased fluidity caused by low temperatures. At the same time, this setting can also prevent the paint performance from deteriorating due to local overheating. On the other hand, heating the paint in the preheating chamber can prevent the paint from clumping and clogging in the spray gun body in low-temperature environments.

[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0016] To better understand this disclosure, reference may be made to the embodiments shown in the following figures. Components in the figures are not necessarily to scale, and related elements may be omitted to emphasize and clearly illustrate the technical features of this disclosure. Additionally, related elements or components may have different arrangements as known in the art. Furthermore, in the figures, the same reference numerals denote the same or similar components in various figures. Wherein: Figure 1 This is a schematic diagram of the structure of an exemplary embodiment of the paint spraying apparatus disclosed herein; Figure 2 for Figure 1 A schematic diagram of the material storage component in an exemplary embodiment of the paint spraying device shown; Figure 3 for Figure 1 A schematic diagram of the spray gun assembly in an exemplary embodiment of the paint spraying device shown; Figure 4 for Figure 1 A schematic diagram of the transmission pipeline in an exemplary embodiment of the paint spraying device shown; Figure 5 for Figure 1 A partial structural schematic diagram of an exemplary embodiment of the paint spraying device is shown. Figure 6 for Figure 1 The diagram shows a partial structural connection of an exemplary embodiment of the paint spraying device.

[0017] Explanation of reference numerals in the attached figures: 1. Material storage assembly; 11. First storage body; 110. Storage space; 111. Feed port; 112. Discharge port; 113. Pressure gauge interface; 12. First heating element; 121. Electric heating layer; 13. First temperature sensor; 14. Insulation layer; 2. Spray gun assembly; 21. Spray gun body; 22. Preheating structure; 221. Second storage body; 222. Second heating element; 223. Preheating chamber; 23. Second temperature sensor; 3. Transmission pipeline; 30. Jacketed cavity; 31. Inner pipeline; 311. Sealing element; 32. Outer pipeline; 33. Insulation sleeve; 4. Circulation assembly; 41. Third storage body; 42. Third heating element; 43. Circulating pump; 44. Third temperature sensor; 5. Temperature control system; 51. Controller; 52. First relay; 53. Second relay; 54. Third relay; 55. Control panel; 551. Display area; 552. Keypad area; 5521. Keypad unit; 56. Alarm device; 6. Moving platform; 61. Drive structure; 62. Loading platform; 63. Foldable push handle; 64. Cable storage hook; 65. Pipe storage rack; 7. Control box; 71. Mounting port; 8. Cover plate. Detailed Implementation

[0018] The technical solutions in the exemplary embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. The exemplary embodiments described herein are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure. Therefore, it should be understood that various modifications and changes can be made to the exemplary embodiments without departing from the scope of protection of this disclosure.

[0019] In the description of this disclosure, unless otherwise expressly specified and limited, the terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term “multiple” refers to two or more; and the term “and / or” includes any and all combinations of one or more associated listed items. In particular, references to “the / described” object or “a” object are also intended to indicate one of a possible plurality of such objects.

[0020] Unless otherwise specified or stated, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0021] Furthermore, it should be understood that the directional terms such as "upper," "lower," "inner," and "outer" described in the exemplary embodiments of this disclosure are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the exemplary embodiments of this disclosure. It should also be understood that, in the context of an element or feature being connected to one or more "upper," "lower," "inner," or "outer" elements, it can be directly connected to one or more "upper," "lower," "inner," or "outer" elements, or indirectly connected to one or more "upper," "lower," "inner," or "outer" elements through intermediate elements.

[0022] This exemplary embodiment provides a paint spraying apparatus, such as... Figure 1 As shown, Figure 1 This is a schematic diagram of an exemplary embodiment of the paint spraying apparatus disclosed herein. Figure 2 for Figure 1 The diagram shows a structural schematic of the material storage component in an exemplary embodiment of the paint spraying apparatus. Figure 3 for Figure 1 The diagram shows a schematic representation of the spray gun assembly in an exemplary embodiment of the paint spraying apparatus. Figure 4 for Figure 1 The diagram shows a schematic representation of the transmission pipe in an exemplary embodiment of the paint spraying apparatus. Figure 5 for Figure 1 The diagram shows a partial structural schematic of an exemplary embodiment of the paint spraying apparatus. Figure 6 for Figure 1 The diagram shows a partial structural connection of an exemplary embodiment of the paint spraying device. Figure 5 A structural schematic diagram of the temperature control system, control box, and cover plate is shown.

[0023] like Figures 1-4As shown, the paint spraying device may include a storage assembly 1, a spray gun assembly 2, a transmission pipeline 3, and a circulation assembly 4. The storage assembly 1 includes a first storage body 11 and a first heating element 12. The first storage body 11 forms a storage space 110 for storing paint, and the first heating element 12 is used to heat the paint in the storage space 110. The spray gun assembly 2 includes a spray gun body 21 and a preheating structure 22. The preheating structure 22 includes a second storage body 221 and a second heating element 222. The second storage body 221 forms a preheating chamber 223, which is connected to the liquid inlet of the spray gun body 21. The second heating element 222 is used to heat the paint in the preheating chamber 223. The transmission pipeline 3 includes an inner pipeline 31 and an outer pipeline 32. The inner pipeline 31 connects the storage space 110 and the preheating chamber 223, and the outer pipeline 32 is sleeved outside the inner pipeline 31. A jacketed cavity 30 is formed between the inner pipeline 31 and the outer pipeline 32. The circulation assembly 4 includes a third storage body 41, a third heating element 42, and a circulation pump 43. The third storage body 41 is used to store the heat transfer medium, the third heating element 42 is used to heat the heat transfer medium, and the circulation pump 43 is used to drive the heat transfer medium to circulate within the jacket cavity 30.

[0024] In this exemplary embodiment, as Figures 1-4 As shown, when the paint spraying device is in use, the paint in the storage space 110 enters the preheating chamber 223 through the transmission pipe 3, and the spray gun body 21 sprays the paint in the preheating chamber 223 onto the target object. The paint spraying device provided in this exemplary embodiment is equipped with three heating elements. Among them, the first heating element 12 is used to heat the paint in the storage space 110, the second heating element 222 is used to heat the paint in the preheating chamber 223, and the third heating element 42 is used to heat the heat-conducting medium in the third storage body 41. At the same time, the circulation pump 43 can circulate the heated heat-conducting medium in the jacket cavity 30 to heat the paint in the inner pipe 31. On the one hand, the device can heat the paint throughout the entire process of transporting it from the storage space 110 to the preheating chamber 223. This setting can reduce the heat loss of the paint during the transport process, thereby effectively avoiding the deterioration of paint performance in low-temperature environments, such as increased paint viscosity and decreased fluidity caused by low temperatures. At the same time, this setting can also prevent the paint performance from deteriorating due to local overheating. On the other hand, heating the paint in the preheating chamber 223 can prevent the paint from clumping and clogging in the spray gun body 21 in low-temperature environments.

[0025] In this exemplary embodiment, as Figure 1 As shown, both ends of the jacket cavity 30 can be sealed by sealing elements 311. Openings can be formed on the sealing elements 311 at both ends of the jacket cavity 30, allowing the heat transfer medium to enter the jacket cavity 30 from one opening and flow out of the jacket cavity 30 from the other opening.

[0026] In this exemplary embodiment, as Figure 1 , 2 As shown, the first storage body 11 can be a cylindrical sealed container. For example, the volume of the cylindrical sealed container can be 30L, and the wall thickness can be 2mm. The material of the container can be 316L stainless steel.

[0027] In this exemplary embodiment, as Figure 1 , Figure 3 As shown, the second storage body 221 can be a 316L stainless steel cylindrical structure. For example, the length of the second storage body 221 can be 60mm, and the inner diameter of the second storage body 221 can be 10mm.

[0028] In this exemplary embodiment, the heat transfer medium can be an aqueous solution of ethylene glycol or propylene glycol. For example, the heat transfer medium can be an aqueous solution of ethylene glycol or propylene glycol with a mass concentration of 35% to 50%. The mass concentration of the aqueous solution of ethylene glycol or propylene glycol can be 35%, 38%, 40%, 45%, 50%, etc. This setting ensures that the freezing point of the heat transfer medium does not exceed -25°C, thereby ensuring that the transmission pipe 3 will not rupture due to the freezing and expansion of the heat transfer medium when the equipment is not in operation, such as during power outages, shutdowns, or relocations.

[0029] In this exemplary embodiment, as Figure 1 As shown, the total length of the transmission pipe 3 can be 3m to 8m. For example, the total length of the transmission pipe 3 can be 3m, 4m, 6m, 7.5m, or 8m.

[0030] In this exemplary embodiment, as Figure 4 As shown, the inner pipe 31 can be a polytetrafluoroethylene (PTFE) flexible hose. The outer pipe 32 can be a silicone rubber flexible hose.

[0031] In this exemplary embodiment, as Figure 1 As shown, the circulation pump 43 can be a magnetic pump. For example, the circulation pump 43 can be a magnetic pump driven by a 12V DC voltage. The flow rate of this magnetic pump can be 3L / min.

[0032] In this exemplary embodiment, as Figure 1 As shown, the third storage unit 41 can be made of 316L stainless steel. The volume of the third storage unit 41 can be 5L to 10L. For example, the volume of the third storage unit 41 can be 5L, 7L, 8L, 9L, or 10L.

[0033] like Figure 1 , Figure 2As shown, the first heating element 12 includes an electric heating layer 121, which covers at least a portion of the outer surface of the first storage body 11. For example, the electric heating layer 121 may cover the arcuate sidewall of the cylinder formed by the first storage body 11. The electric heating layer 121 is used to convert electrical energy into heat energy. This arrangement allows the coating in the storage space 110 to be heated more uniformly.

[0034] like Figure 1 , Figure 2 As shown, the storage assembly 1 may further include an insulation layer 14, which covers the side of the electric heating layer 121 opposite to the first storage body 11. The insulation layer 14 can reduce the heat loss of the electric heating layer 121 to the outside, thereby improving the utilization efficiency of the heat generated by the first heating element 12.

[0035] In this exemplary embodiment, the electric heating layer 121 can be a silicone rubber electric heating strip. Silicone rubber electric heating strips have high thermal efficiency, and this configuration can improve the thermal efficiency of the electric heating layer 121. For example, the electric heating layer 121 can be a silicone rubber electric heating strip with a heating power of 500W to 1000W, and the heating power of the electric heating layer 121 can be 500W, 600W, 700W, 800W, or 1000W.

[0036] In this exemplary embodiment, the insulation layer 14 can be nano-aerogel insulation cotton. For example, the thickness of the insulation layer 14 can be 15 mm. The insulation layer 14 can be covered by Velcro on the side of the electric heating layer 121 away from the first storage body 11.

[0037] like Figure 3 As shown, the second heating element 222 includes a positive temperature coefficient thermistor, which can be located on the outer surface of the second storage body 221. The second heating element 222 generates heat using the positive temperature coefficient thermistor.

[0038] In this exemplary embodiment, as Figure 3 As shown, the positive temperature coefficient thermistor has the characteristic that the resistance increases sharply when the temperature reaches the Curie temperature. This setting can make the second heating element 222 have the characteristic of self-limiting temperature, thereby avoiding the second heating element 222 from being too hot, and thus effectively preventing paint deterioration or safety accidents caused by abnormal heating of the second heating element 222.

[0039] In this exemplary embodiment, as Figure 3 As shown, the second heating element 222 can be a positive temperature coefficient ceramic heating element. The total heating power of the second heating element 222 can be 100W to 200W. For example, the total heating power of the second heating element 222 can be 100W, 120W, 160W, 180W, or 200W. The second heating element may include two positive temperature coefficient ceramic heating elements, each with a power of 80W.

[0040] like Figure 1 As shown, the third heating element 42 may include an electric heating rod, which can be located inside the third storage body 41. The electric heating rod is characterized by its small size, fast heating response, high thermal efficiency, and good safety performance. This arrangement facilitates the installation of the third heating element 42 inside the third storage body 41 and allows for precise temperature control of the third heating element 42. This arrangement also improves the safety of the paint spraying device. The power of the third heating element 42 can be 1000W.

[0041] In this exemplary embodiment, as Figure 3 As shown, the spray gun body 21 can be a pneumatic spray gun. The spray gun body 21 may also include a power unit, such as an air compressor.

[0042] like Figure 1 As shown, the paint spraying device also includes a movable platform 6. The movable platform 6 includes a drive structure 61 and a carrying platform 62. The drive structure 61 drives the carrying platform 62 to move. At least a portion of the material storage assembly 1, spray gun assembly 2, transmission pipe 3, and circulation assembly 4 are located on the carrying platform 62. This arrangement integrates at least a portion of the material storage assembly 1, spray gun assembly 2, transmission pipe 3, and circulation assembly 4 onto the movable platform 6, thereby giving the device advantages of flexible movement and good portability, thus improving the device's practicality.

[0043] In this exemplary embodiment, the movable platform 6 can be a skid-mounted trolley structure. The loading platform 62 can be a 316L stainless steel frame with a passivated surface. The drive structure 61 can include four omnidirectional wheels with locking function. The omnidirectional wheels can include 316 stainless steel wheel frames and nitrile rubber wheel surfaces. The movable platform 6 can also include a foldable push handle 63.

[0044] In this exemplary embodiment, as Figure 1 As shown, a cable storage hook 64 and a pipe storage rack 65 can also be provided below the loading platform 62. The cable storage hook 64 is used to hang cables, and the pipe storage rack 65 is used to store transmission pipes 3. This setting facilitates the organization and storage of transmission pipes, power cables, etc., during construction site relocation.

[0045] like Figure 1 , Figure 4As shown, the outer diameter of the inner pipe 31 is d1, and the inner diameter of the outer pipe 32 is d2. The ratio (d2-d1) / d1 is greater than or equal to 0.6 and less than or equal to 1. When (d2-d1) / d1 is greater than 1, the inner diameter of the outer pipe 32 is much larger than the outer diameter of the inner pipe 31. This results in an excessively thick jacket cavity 30 between the inner and outer pipes 31. With the circulation pump 43 maintaining a constant flow rate, this leads to a low flow velocity of the hot medium within the jacket cavity 30, resulting in a low heating rate of the coating in the inner pipe 31. When (d2-d1) / d1 is less than 0.6, the difference between the inner diameter of the outer pipe 32 and the outer diameter of the inner pipe 31 is too small. This results in an excessively thin jacket cavity 30 between the inner and outer pipes 31, with significant thickness variations at different locations. This leads to uneven heating of the coating in the inner pipe 31. In this exemplary embodiment, (d2-d1) / d1 is set to an appropriate value, which can ensure both the heating rate of the coating in the inner pipe 31 and the uniform heating of the coating in the inner pipe 31.

[0046] It should be noted that the thickness of the jacket cavity 30 is the radial dimension of the jacket cavity 30 in the inner pipe 31.

[0047] In this exemplary embodiment, as Figure 4 As shown, the outer diameter of the inner pipe 31 can be 13.5 mm and the thickness can be 1.5 mm. The inner diameter of the outer pipe 32 can be 25 mm and the thickness can be 2 mm.

[0048] like Figure 1 , Figure 4 As shown, the transmission pipe 3 also includes an insulation jacket 33. The insulation jacket 33 is fitted over the outer side of the outer pipe 32, and the thermal conductivity of the insulation jacket 33 can be lower than that of the outer pipe 32. This arrangement allows more heat to be retained in the outer pipe 32 and not lost to the outside, thus improving the utilization efficiency of the heat generated by the third heating element 42 and reducing the energy consumption of the circulating pump 43.

[0049] In this exemplary embodiment, as Figure 4 As shown, the insulation sleeve 33 can be made of foamed rubber and plastic.

[0050] In this exemplary embodiment, as Figure 4 As shown, the thickness of the insulation sleeve 33 can be 8mm to 15mm. For example, the thickness of the insulation sleeve 33 can be 8mm, 9mm, 10mm, 12mm, or 15mm.

[0051] like Figures 1-3 , Figure 5 , Figure 6As shown, the paint spraying device also includes: a first temperature sensor 13, a second temperature sensor 23, a third temperature sensor 44, and a temperature control system 5. The first temperature sensor 13 is located inside the first storage body 11, the second temperature sensor 23 is located inside the second storage body 221, and the third temperature sensor 44 is located inside the third storage body 41. The temperature control system 5 includes a controller 51, a first relay 52, a second relay 53, and a third relay 54. The controller 51 is used to control the power of the first heating element 12 using the first relay 52 based on the temperature information collected by the first temperature sensor 13. The temperature control system 5 is also used to control the power of the second heating element 222 using the second relay 53 based on the temperature information collected by the second temperature sensor 23, and the temperature control system 5 is also used to control the power of the third heating element 42 using the third relay 54 based on the temperature information collected by the third temperature sensor 44.

[0052] In this exemplary embodiment, as Figure 1 , Figure 6 As shown, this setup can achieve independent temperature control of the first storage body 11, the second storage body 221, and the third storage body 41 through the temperature control system 5, the first temperature sensor 13, the second temperature sensor 23, and the third temperature sensor 44, thereby allowing the temperature of the coating in the storage space 110, the inner pipe 31, and the preheating chamber 223 to be adjusted respectively.

[0053] In this exemplary embodiment, as Figure 1 , Figure 2 As shown, the first temperature sensor 13 can be a platinum resistance temperature sensor. For example, the first temperature sensor 13 can be a PT100 type platinum resistance temperature sensor.

[0054] In this exemplary embodiment, as Figure 1 , Figure 3 As shown, the second temperature sensor 23 can be a platinum resistance temperature sensor. For example, the second temperature sensor 23 can be a miniature PT100 type platinum resistance temperature sensor.

[0055] In this exemplary embodiment, as Figure 1 As shown, the third temperature sensor 44 can be a platinum resistance temperature sensor. For example, the third temperature sensor 44 can be a PT100 type platinum resistance temperature sensor.

[0056] In this exemplary embodiment, as Figure 1 , Figure 5 As shown, the first relay 52, the second relay 53, and the third relay 54 can all be solid-state relays.

[0057] like Figure 1 , Figure 2As shown, the first temperature sensor 13 may include a first sub-temperature sensor 131 and a second sub-temperature sensor 132. The first storage body 11 may also include a feed port 111 and a discharge port 112. The first sub-temperature sensor 131 is disposed on the inner wall of the first storage body 11 near the discharge port 112, and the second sub-temperature sensor 132 is disposed on the inner wall between the feed port 111 and the discharge port 112. The temperature control system 5 can use the average temperature detected by the first sub-temperature sensor 131 and the second sub-temperature sensor 132 as the internal temperature of the first storage body 11. This setting can make the temperature value of the coating in the storage space 110 more accurate.

[0058] In this exemplary embodiment, as Figure 2 As shown, the discharge port 112 can be equipped with a ball valve structure.

[0059] In this exemplary embodiment, as Figure 2 As shown, the first storage body 11 may also include a pressure gauge interface 113, which can be connected to a pressure gauge. The pressure gauge can measure the pressure value in the storage space 110, thereby determining whether it is necessary to continue adding paint.

[0060] In this exemplary embodiment, the inner pipe 31 may be provided with connectors at both ends, which may be connected to the discharge port 112 and the paint inlet of the preheating chamber 223, respectively.

[0061] like Figure 1 , Figure 5 , Figure 6 As shown, the temperature control system 5 may further include: a control panel 55, which is connected to the controller 51. The control panel 55 includes a display area 551 and a button area 552. The display area 551 is used to display temperature information collected by the first temperature sensor 13, the second temperature sensor 23, and the third temperature sensor 44. The button area 552 is provided with a button unit 5521, which is used to provide a first temperature control signal, a second temperature control signal, and a third temperature control signal to the controller 51. The controller 51 is used to control the power of the first heating element 12 using the first relay 52 according to the first temperature control signal, to control the power of the second heating element 222 using the second relay 53 according to the second temperature control signal, and to control the power of the third heating element 42 using the third relay 54 according to the third temperature control signal. The paint spraying device may further include: a control box 7 and a cover plate 8. The control box 7 has a mounting port 71, and the control panel 55 is disposed at the mounting port 71. The cover plate 8 is sealed over the mounting port 71 to isolate the control panel 55 on the side of the cover plate 8 facing the mounting port 71. At least a portion of the cover plate 8 protrudes from the outside of the control box 7, and the button unit 5521 is fitted with the protruding portion of the cover plate 8.

[0062] In this exemplary embodiment, as Figure 1 , Figure 5 , Figure 6 As shown, the button area 552 and controller 51 enable the device to set the target temperatures of the first storage unit 11, the second storage unit 221, and the third storage unit 41, and to control the power of the first heating element 12, the second heating element 222, and the third heating element 42 according to the target temperatures of each component. On the one hand, this setup can avoid local overheating or insufficient temperature; on the other hand, this setup allows the device to flexibly adjust the temperature of each component according to the operating scenario.

[0063] In this exemplary embodiment, the target temperature adjustment range of the storage space 110 and the preheating chamber 223 is 15°C to 35°C. For example, the target temperature of the storage space 110 and the preheating chamber 223 can be 15°C, 20°C, 25°C, 28°C, 30°C, or 35°C.

[0064] In this exemplary embodiment, the target temperature adjustment range of the third storage unit 41 is 30°C to 50°C. For example, the target temperature of the third storage unit 41 can be 30°C, 35°C, 38°C, 40°C, 45°C, or 50°C.

[0065] In this exemplary embodiment, as Figure 1 , Figure 5 As shown, at least a portion of the cover plate 8 is protruding, which makes it less prone to dust accumulation on the outer surface of the cover plate 8, thereby improving the adaptability of the device in dusty and dirty environments. The button unit fits into the protruding portion of the cover plate 8. This design allows operators to control the button unit by directly pressing the protruding portion of the cover plate 8 while wearing protective gloves, thus solving the problem of the button unit being difficult to respond when the operator is wearing protective gloves. At the same time, it also avoids the problem of the control panel 55, which uses a glass touch screen, being difficult to clean after being contaminated by paint.

[0066] In this exemplary embodiment, as Figure 5 As shown, the display area 551 may include three sets of LED digital tubes, which respectively display the real-time temperature data of the first temperature sensor 13, the second temperature sensor 23, and the third temperature sensor 44. The temperature data of the first temperature sensor 13 is the weighted value of the first sub-temperature sensor 131 and the second sub-temperature sensor 132. For example, the temperature data of the first temperature sensor 13 may be the average value of the first sub-temperature sensor 131 and the second sub-temperature sensor 132.

[0067] In this exemplary embodiment, as Figure 1 , Figure 5 As shown, the protection rating of control box 7 can be IP65. The enclosure of control box 7 can be made of 316L stainless steel welded structure, and the cable entry of control box 7 is equipped with a waterproof gland.

[0068] In this exemplary embodiment, as Figure 1 , Figure 5 As shown, the cover plate 8 can be made of rigid polycarbonate sheet. The cover plate 8 can also be made of polyurethane film composite sheet. The cover plate 8 can be integrally stamped. For example, the cover plate 8 can be integrally stamped from rigid polycarbonate sheet.

[0069] In this exemplary embodiment, as Figure 1 , Figure 5 As shown, the cover plate 8 can be a convex arc structure. For example, the outer surface of the cover plate 8 protrudes entirely beyond the outer side of the control box 7, with a protrusion height of 3mm to 8mm. A sealing ring is provided at the joint between the cover plate 8 and the mounting port 71, and its protection level can be IP65. The outer surface of the cover plate 8 can be coated with a paint-resistant coating, which allows the cover plate 8 to be cleaned with solvents after being contaminated by splashes of water-based paint or emulsified asphalt.

[0070] like Figure 1 , Figure 5 , Figure 6 As shown, the temperature control system 5 also includes an alarm device 56. The controller 51 is further configured to control the alarm device 56, the first relay 52, the second relay 53, and the third relay 54 based on temperature information collected by the first temperature sensor 13, the second temperature sensor 23, and the third temperature sensor 44 using preset rules. The preset rules include: when the temperature information collected by the first temperature sensor 13 is greater than a first threshold temperature, the controller 51 controls the alarm device 56 to sound an alarm and controls the first relay 52 to shut off the first heating element 12; when the temperature information collected by the second temperature sensor 23 is greater than a second threshold temperature, the controller 51 controls the alarm device 56 to sound an alarm and controls the second relay 53 to shut off the second heating element 222; when the temperature information collected by the third temperature sensor 44 is greater than a third threshold temperature, the controller 51 controls the alarm device 56 to sound an alarm and controls the third relay 54 to shut off the third heating element 42. The third threshold temperature is greater than both the first and second threshold temperatures. This configuration enables the paint spraying device to have automatic over-temperature power-off protection and over-temperature alarm functions, thereby improving the safety and reliability of the device and avoiding paint performance degradation and safety accidents caused by abnormal heating.

[0071] In this exemplary embodiment, as Figure 5 As shown, the alarm device 56 can emit sound signals and / or light signals.

[0072] In this exemplary embodiment, the first threshold temperature and the second threshold temperature can be 20°C to 40°C, for example, the first threshold temperature and the second threshold temperature can be 20°C, 25°C, 28°C, 30°C, 35°C, and 40°C. The third threshold temperature can be 35°C to 55°C, for example, the third threshold temperature can be 35°C, 38°C, 40°C, 45°C, 50°C, and 55°C.

[0073] In this exemplary embodiment, the total rated power of the device is approximately 2.0kW. The device is powered by a 220V / 50Hz AC power supply and can also be powered by mains power or a portable gasoline generator with a rated output power of not less than 2.5kW. The total weight of the device, including the paint and heat transfer medium, is approximately 65kg, and it can be carried by two people or moved flexibly on the construction site by a trolley.

[0074] In this exemplary embodiment, the operation process of the device during construction is as follows: The paint is poured into the paint storage space 110 and sealed. The level of the heat-conducting medium in the third storage body 41 is confirmed to be normal. Then, the power is turned on, and the target temperature of each component is set via the button area 552 of the control panel 55. For example, the target temperature of the storage space is 25°C, the target temperature of the preheating chamber is 28°C, and the target temperature of the third storage body is 45°C. Heating is started, and preheating is carried out for approximately 15-20 minutes until the temperature of each section reaches the set value and stabilizes. The power unit in the spray gun body 21 is then turned on to begin the spraying operation. This device can be used for on-site anti-corrosion coating spraying on the concrete surface of wind turbine foundations in the Shagohuang wind farm, for pre-processing spraying of photovoltaic precast concrete piles in the factory before shipment, for on-site iron anti-rust coating spraying of photovoltaic bracket steel structure components, and for spraying protective coatings on concrete structures in saline soil areas, covering the anti-corrosion construction needs of components in the air, soil, and below the groundwater level.

[0075] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.

[0076] The accompanying drawings in this disclosure only illustrate the structures involved in this disclosure; other structures can be referred to with common design. Unless otherwise specified, the embodiments and features described in these embodiments can be combined to obtain new embodiments. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

[0077] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is defined only by the appended claims.

Claims

1. A paint spraying device, characterized in that, The paint spraying device includes: The material storage assembly (1) includes a first storage body (11) and a first heating element (12). The first storage body (11) forms a material storage space (110) for storing paint, and the first heating element (12) is used to heat the paint in the material storage space (110). The spray gun assembly (2) includes a spray gun body (21) and a preheating structure (22). The preheating structure (22) includes a second storage body (221) and a second heating element (222). The second storage body (221) forms a preheating cavity (223). The preheating cavity (223) is connected to the liquid inlet of the spray gun body (21). The second heating element (222) is used to heat the coating material in the preheating cavity (223). The transmission pipeline (3) includes an inner pipeline (31) and an outer pipeline (32). The inner pipeline (31) is connected between the storage space (110) and the preheating chamber (223). The outer pipeline (32) is sleeved on the outside of the inner pipeline (31). A jacketed cavity is formed between the inner pipeline (31) and the outer pipeline (32). The circulation assembly (4) includes a third storage body (41), a third heating element (42), and a circulation pump (43). The third storage body (41) is used to store the heat-conducting medium, the third heating element (42) is used to heat the heat-conducting medium, and the circulation pump (43) is used to drive the heat-conducting medium to circulate within the jacket cavity.

2. The paint spraying device according to claim 1, characterized in that, The paint spraying device also includes: The first temperature sensor (13) is located inside the first storage body (11); The second temperature sensor (23) is located inside the second storage unit (221); The third temperature sensor (44) is located inside the third storage unit (41); The temperature control system (5) includes a controller (51), a first relay (52), a second relay (53), and a third relay (54). The controller (51) is used to control the power of the first heating element (12) using the first relay (52) based on the temperature information collected by the first temperature sensor (13), to control the power of the second heating element (222) using the second relay (53) based on the temperature information collected by the second temperature sensor (23), and to control the power of the third heating element (42) using the third relay (54) based on the temperature information collected by the third temperature sensor (44).

3. The paint spraying device according to claim 2, characterized in that, The temperature control system (5) also includes: Control panel (55), the control panel (55) is connected to the controller (51), the control panel (55) includes a display area (551) and a button area (552), the display area (551) is used to display at least the temperature information collected by the first temperature sensor (13), the second temperature sensor (23) and the third temperature sensor (44), the button area (552) is provided with a button unit (5521), the button unit is used to provide the controller (51) with a first temperature control signal, a second temperature control signal and a third temperature control signal, the controller (51) is used to control the power of the first heating element (12) by the first relay (52) according to the first temperature control signal, to control the power of the second heating element (222) by the second relay (53) according to the second temperature control signal, and to control the power of the third heating element (42) by the third relay (54) according to the third temperature control signal; The paint spraying device also includes: A control box (7) has an installation port (71) formed on it, and a control panel (55) is disposed at the installation port (71); A cover plate (8) is sealed over the mounting port (71) to isolate the control panel (55) on the side of the cover plate (8) facing the mounting port (71). At least a portion of the cover plate (8) protrudes out of the outside of the control box (7), and the button unit (5521) is in contact with the protruding portion of the cover plate (8).

4. The paint spraying device according to claim 2, characterized in that, The temperature control system (5) also includes: The alarm device (56) and the controller (51) are also used to control the alarm device (56), the first relay (52), the second relay (53), and the third relay (54) according to the temperature information collected by the first temperature sensor (13), the second temperature sensor (23), and the third temperature sensor (44) using preset rules. The preset rules include: when the temperature information collected by the first temperature sensor (13) is greater than the first threshold temperature, the controller (51) controls the alarm device (56) to sound an alarm and controls the first relay (52) to turn off the first heating element (12); when the temperature information collected by the second temperature sensor (23) is greater than the second threshold temperature, the controller (51) controls the alarm device (56) to sound an alarm and controls the second relay (53) to turn off the second heating element (222); when the temperature information collected by the third temperature sensor (44) is greater than the third threshold temperature, the controller (51) controls the alarm device (56) to sound an alarm and controls the third relay (54) to turn off the third heating element (42), wherein the third threshold temperature is greater than the first threshold temperature and the second threshold temperature.

5. The paint spraying device according to claim 1, characterized in that, The first heating element (12) includes: An electric heating layer (121) covers at least a portion of the outer surface of the first storage body (11), the electric heating layer (121) being used to convert electrical energy into heat energy; The storage assembly (1) further includes: An insulation layer (14) covers the side of the electric heating layer (121) away from the first storage body (11).

6. The paint spraying device according to claim 1, characterized in that, The second heating element (222) includes a positive temperature coefficient thermistor, which is located on the outer surface of the second storage body (221), and the second heating element (222) uses the positive temperature coefficient thermistor to generate heat. And / or, the third heating element (42) includes an electric heating rod, the third heating element (42) being located inside the third storage body (41).

7. The paint spraying device according to claim 1, characterized in that, The paint spraying device also includes: The mobile platform (6) includes a drive structure (61) and a loading platform (62). The drive structure (61) is used to drive the loading platform (62) to move. At least a portion of the storage assembly (1), spray gun assembly (2), transmission pipe (3), and circulation assembly (4) are located on the loading platform (62).

8. The paint spraying apparatus according to claim 1, characterized in that, The outer diameter of the inner pipe (31) is d1, and the inner diameter of the outer pipe (32) is d2. The ratio of (d2-d1) / d1 is greater than or equal to 0.6 and less than or equal to 1.

9. The paint spraying device according to claim 1, characterized in that, The transmission pipe (3) also includes: An insulation sleeve (33) is fitted on the outside of the outer pipe (32), and the thermal conductivity of the insulation sleeve (33) is less than that of the outer pipe (32).

10. The paint spraying apparatus according to claim 2, characterized in that, The first temperature sensor (13) includes a first sub-temperature sensor (131) and a second sub-temperature sensor (132). The first storage body (11) also includes a feeding port (111) and a discharging port (112); The first sub-temperature sensor (131) is located on the inner wall of the first storage body (11) near the discharge port (112), and the second sub-temperature sensor (132) is located on the inner wall between the feeding port (111) and the discharge port (112).

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