A paint spraying equipment

Abstract

The present invention belongs to the technical field of paint spraying, specifically a paint spraying device, including a controller, a center sleeve, a paint tube, a connecting shaft, a first supporting shaft, a second supporting shaft and a rotating nozzle, a dirt suction plate, located at a side of the connecting shaft away from the paint tube, and having a first cavity therein; an exhaust pipe, one end of which extends into the center sleeve, and the end of the exhaust pipe away from the center sleeve is connected to the exhaust device; a cleaning plate, located at a side of the dirt suction plate away from the center sleeve, and having a second cavity therein; an air inlet pipe, one end of which extends into the center sleeve, and the end of the air inlet pipe away from the center sleeve is connected to an air pump. In the process of advancing into the pipeline, the present invention achieves the effect of removing dust from the inner wall of the pipeline and improves the quality of paint spraying on the inner wall of the pipeline by forming a relatively closed space with the dirt suction plate thereafter through the cleaning plate fitting against the inner wall of the pipeline.

Description

Technical Field

[0001] The invention belongs to the technical field of paint spraying, in particular to a paint spraying device. Background Art

[0002] Paint spraying is a coating method that uses a spray gun or a disc atomizer to disperse the paint into uniform and fine droplets with the help of pressure or centrifugal force, and applies it to the surface of the object to be coated. Paint spraying is widely used in production and manufacturing and personal maintenance, such as exterior wall decoration, parts anti-corrosion, car touch-up, pipeline spraying, etc.

[0003] Among them, for pipeline spraying, in order to ensure the service life of the pipeline, it is generally necessary to spray the inner and outer walls of the pipeline so that the pipeline has functions such as rust prevention and anti-corrosion. For the outer wall of the pipeline, a spray gun is usually used for direct spraying, and the inner wall of the pipeline needs to be sprayed with paint with the help of a pipeline inner wall sprayer. In the prior art, the inner wall spraying of the pipeline is achieved by positioning the sprayer at the center of the pipeline through a bracket, pushing the pipeline inner wall sprayer to the other end of the pipe, opening the nozzle, and then the sprayer moves backward while spraying paint.

[0004] However, in actual operation, it is found that after the batch processing of the pipes is completed, they are piled together and then prepared for pipe spraying. In this process, as the stacking time increases and the spraying is not timely, impurities may be attached to the inner wall of the pipe. As a result, when the actual pipe is sprayed, the sprayed paint contacts the impurities attached to the inner wall of the pipe, resulting in poor paint spraying effect, so that the paint attached to the inner wall is easy to fall off;

[0005] Alternatively, for an already used pipe, when a second spraying is required, impurities remaining during use may adhere to the inner wall of the pipe, which will also affect the effect of the spraying of the inner wall of the pipe. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the present invention proposes a paint spraying device.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: the present invention is a paint spraying device, comprising a controller, a central sleeve and a telescopic rod, wherein the telescopic rod is evenly fixed on the outer surface of the central sleeve;

[0008] A rotating wheel, rotatably connected to an end of the telescopic rod away from the central sleeve;

[0009] It is characterized by further comprising:

[0010] A paint tube, one end of which extends into the central sleeve, and the end of the paint tube away from the central sleeve is connected to the paint conveying device;

[0011] A connecting shaft connected to the portion of the paint tube located in the central sleeve;

[0012] A first supporting shaft, fixedly connected to an end of the connecting shaft away from the central sleeve;

[0013] A second support shaft, fixedly connected to the first support shaft;

[0014] A rotating spray head is rotatably connected to the connecting shaft and is rotatably connected to the paint pipe via a slip ring;

[0015] The dirt suction plate is located at the side of the connecting shaft away from the paint tube, and a first cavity is opened inside the dirt suction plate. The dirt suction holes are evenly opened on the side of the dirt suction plate away from the rotating spray head.

[0016] An exhaust pipe, one end of which extends into the central sleeve, an end of the exhaust pipe away from the central sleeve is connected to the exhaust device, an end of the exhaust pipe close to the rotating nozzle is passed into the first cavity, and the exhaust pipe passes through the connecting shaft and the first supporting shaft;

[0017] The cleaning plate is located at a side of the dirt suction plate away from the central sleeve, and has a second cavity formed inside the cleaning plate;

[0018] An air inlet pipe has one end extending into the center sleeve, an end of the air inlet pipe away from the center sleeve is connected to the air pump, an end of the air inlet pipe close to the dirt suction plate is passed into the second cavity, and the air inlet pipe passes through the connecting shaft, the first support shaft, the dirt suction plate and the second support shaft.

[0019] Optionally, a preheating ring is sleeved on the curved surface of the dirt suction plate, a hot air cavity is arranged inside the preheating ring, hot air holes are evenly opened on the side of the preheating ring away from the dirt suction plate, the hot air cavity is connected with hot air through a hot air pipe, one end of the hot air pipe extends into the center sleeve, one end of the hot air pipe away from the center sleeve is connected to a hot air conveying device, and the hot air pipe passes through the connecting shaft and the first support shaft.

[0020] Optionally, the hot air pipe is wrapped around the paint pipe.

[0021] Optionally, a heat-insulating layer is provided on the inner wall of the central sleeve.

[0022] Optionally, the cleaning plate is detachably connected to the first support shaft, and the dirt suction plate is detachably connected to the second support shaft.

[0023] Optionally, a placement cylinder is fixed to one end of the center sleeve near the rotary nozzle, and the placement cylinder is used to place the rotary nozzle. A telescopic cylinder is fixedly connected to one end of the connecting shaft near the center sleeve, and the telescopic cylinder is arranged on the bottom surface of the center sleeve near the suction plate. The output end of the telescopic cylinder is fixedly connected to the connecting shaft.

[0024] Optionally, a shielding sheet is provided on a side of the placement tube away from the central sleeve.

[0025] Optionally, the paint pipe, cleaning tray, air intake pipe, hot air pipe and exhaust pipe are all made of rubber.

[0026] The beneficial effects of the present invention are as follows:

[0027] 1. A paint spraying device described in the present invention forms a relatively closed space in the pipeline by cooperating with a cleaning plate and a dirt suction plate that fit the pipeline. The cleaning plate and the dirt suction plate move from one side of the pipeline to the other side to achieve centralized cleaning of impurities on the inner wall of the pipeline, thereby achieving the purpose of cleaning impurities on the inner wall of the pipeline and improving the paint spraying quality of the inner wall of the pipeline.

[0028] 2. A paint spraying device described in the present invention, a hot air cavity is arranged in the preheating ring of the present invention, and hot air holes are evenly opened on the side of the preheating ring away from the dirt suction plate. The hot air cavity is connected to the hot air through a hot air pipe, so that the paint and the pipeline can fit better, preventing the paint on the inner wall of the pipeline from being sprayed unevenly due to the influence of gravity, thereby improving the paint spraying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] Figure 1 is a front perspective view of the present invention;

[0031] Figure 2 is a rear perspective view of the present invention;

[0032] Figure 3 is a non-working state diagram of the present invention;

[0033] Figure 4 It is a working state diagram of the present invention;

[0034] Figure 5 is a cross-sectional view of the present invention;

[0035] Figure 6 is a schematic diagram of a card slot of the present invention;

[0036] In the figure: 1. center sleeve; 2. telescopic rod; 3. rotating wheel; 4. paint tube; 5. connecting shaft; 6. first supporting shaft; 7. second supporting shaft; 8. rotating nozzle; 9. suction plate; 10. suction hole; 11. exhaust pipe; 12. cleaning plate; 13. air inlet pipe; 14. first cavity; 15. second cavity; 16. preheating ring; 17. hot air cavity; 18. hot air hole; 19. hot air pipe; 20. insulation layer; 21. telescopic cylinder; 22. shielding piece. DETAILED DESCRIPTION

[0037] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0038] like Figures 1 to 6 As shown, the present invention shows a paint spraying device;

[0039] It includes a controller, a central sleeve 1 and a telescopic rod 2, wherein the telescopic rod 2 is evenly fixed on the outer surface of the central sleeve 1;

[0040] A rotating wheel 3 is rotatably connected to an end of the telescopic rod 2 away from the central sleeve 1;

[0041] A paint tube 4, one end of which extends into the central sleeve 1, and one end of the paint tube 4 away from the central sleeve 1 is connected to a paint conveying device;

[0042] A connecting shaft 5 connected to the portion of the paint tube 4 located in the central sleeve 1;

[0043] A first supporting shaft 6, fixedly connected to an end of the connecting shaft 5 away from the central sleeve 1;

[0044] A second support shaft 7, fixedly connected to the first support shaft 6;

[0045] A rotating spray head 8 is rotatably connected to the connecting shaft 5 and is rotatably connected to the paint pipe 4 via a slip ring;

[0046] The dirt suction plate 9 is located at the side of the connecting shaft 5 away from the paint tube 4, and a first cavity 14 is opened inside the dirt suction plate 9. The dirt suction holes 10 are evenly opened on the side of the dirt suction plate 9 away from the rotating nozzle;

[0047] An exhaust pipe 11, one end of which extends into the central sleeve 1, the end of the exhaust pipe 11 away from the central sleeve 1 is connected to the exhaust device, the end of the exhaust pipe 11 close to the rotating nozzle 8 is passed into the first cavity 14, and the exhaust pipe 11 passes through the connecting shaft 5 and the first supporting shaft 6;

[0048] The cleaning plate 12 is located at a side of the dirt suction plate 9 away from the central sleeve 1, and has a second cavity 15 formed therein;

[0049] The air inlet pipe 13 has one end extending into the center sleeve 1, the end of the air inlet pipe 13 away from the center sleeve 1 is connected to the air pump, the end of the air inlet pipe 13 close to the dirt suction plate 9 is passed into the second cavity 15, and the air inlet pipe 13 passes through the connecting shaft 5, the first support shaft 6, the dirt suction plate 9 and the second support shaft 7.

[0050] Specifically, when the inner wall of the pipeline needs to be sprayed, the staff puts the paint spraying equipment on the side of the pipeline that needs to be sprayed with paint, wherein the telescopic rod 2 and the rotating wheel 3 belong to the prior art, and their purpose is to drive the paint spraying equipment to move in the pipeline, and are suitable for pipelines of different diameters, therefore, no further elaboration is given here, and then the air pump is turned on through the controller, and air is pumped into the second cavity 15 through the air inlet pipe 13, until the cleaning disc 12 is completely in contact with the inner wall of the pipeline, the air supply to the second cavity 15 is stopped, and then the paint spraying equipment is pushed to the other side of the pipeline, and the power for pushing the paint spraying equipment can come from manpower or electricity, and the air extraction device is turned on when the cleaning disc 12 is completely in contact with the inner wall of the pipeline;

[0051] In this process, as the dirt suction plate 9 and the cleaning plate 12 move in the inner wall of the pipeline, the cleaning plate 12 contacts the inner wall of the pipeline, and continuously pushes impurities attached to the surface of the inner wall of the pipeline from one side of the pipeline to the other side of the pipeline. At the same time, through the cooperation of the dirt suction plate 9 and the cleaning plate 12, that is, the cleaning plate 12 forms a relatively closed space with the dirt suction plate 9 when in use, and when it continues to move in the inner wall of the pipeline, the dirt suction hole 10 on the dirt suction plate 9 continuously absorbs impurities in the relatively closed space into the dirt suction plate 9, thereby reducing the content of impurities attached to the inner wall of the pipeline and the pipeline when the inner wall of the subsequent pipeline is sprayed, thereby improving the effect of pipeline spraying paint. At the same time, the relatively closed space formed by the cleaning plate 12 and the dirt suction plate 9 can make the impurities on the inner wall of the pipeline cleaned by the cleaning plate 12 be cleaned up in a relatively closed space, thereby improving the impurity cleaning effect, and indirectly improving the paint spraying effect;

[0052] When the cleaning disc 12 is pushed from one side of the pipeline to the other side and is completely pushed out of the inner wall of the pipeline, the impurities in the inner wall of the pipeline that are in contact with the cleaning disc 12 are pushed out of the pipeline. At this time, the cleaning disc 12 is deflated through the controller, so that the volume of the cleaning disc 12 is reduced and it no longer fits the inner wall of the pipeline, and it is restored to a non-working state. The cleaning disc 12 is fixed to the second support shaft 7, and the suction disc 9 stops adsorbing impurities. The suction disc 9 is fixed to the first support shaft 6. The paint conveying equipment is then turned on by the controller, and the paint to be sprayed is fed into the rotary nozzle through the paint pipe 4. The rotary nozzle rotates at a constant speed on the connecting shaft 5, and the paint is directly sprayed onto the inner wall of the pipeline to form a uniform paint coating. At the same time, the paint spraying equipment keeps retreating at a constant speed to prevent the paint spraying equipment from being sometimes fast and sometimes slow, resulting in an uneven coating and failure to achieve the anti-corrosion effect on the inner wall of the pipeline.

[0053] Compared with the prior art, the present invention forms a relatively closed space in the pipeline by cooperating with the cleaning plate 12 and the suction plate 9 which are fitted to the pipeline. The cleaning plate 12 and the suction plate 9 move from one side of the pipeline to the other side to realize centralized cleaning of impurities on the inner wall of the pipeline, thereby achieving the purpose of cleaning impurities on the inner wall of the pipeline and improving the paint spraying quality of the inner wall of the pipeline.

[0054] As a preferred embodiment of the present invention: the curved surface of the dirt suction plate 9 is sleeved with a preheating ring 16, and a hot air cavity 17 is arranged in the preheating ring 16. Hot air holes 18 are evenly opened on the side of the preheating ring 16 away from the dirt suction plate 9. The hot air cavity 17 is connected with hot air through a hot air pipe 19. One end of the hot air pipe 19 extends into the central sleeve 1. The end of the hot air pipe 19 away from the central sleeve 1 is connected to the hot air conveying equipment. The hot air pipe 19 passes through the connecting shaft 5 and the first support shaft 6.

[0055] In the specific implementation, the paint spraying equipment is first pushed to the other side of the pipeline. At this time, the hot air conveying equipment is turned on by the controller, and the hot air enters the hot air cavity 17 from the hot air pipe 19 and then sprays out from the hot air hole 18. On the one hand, the inner wall of the pipeline is preheated to facilitate the subsequent paint spraying to better adhere to the inner wall of the pipeline. On the other hand, when the paint spraying equipment moves to the other side of the pipeline, the hot air sprayed from the hot air hole 18 can cooperate with the suction plate 9 and the cleaning plate 12 to further clean the impurities on the inner wall of the pipeline.

[0056] When the paint conveying equipment is pushed to the other side of the pipeline, the cleaning disc 12 is deflated through the controller, so that the cleaning disc 12 is reduced in volume and no longer fits the inner wall of the pipeline, the dirt suction disc 9 stops sucking dirt, and then the rotating nozzle starts to spray paint while the paint spraying equipment retreats at a uniform speed. During this process, hot air is continuously ejected from the preheating hole to dry the paint sprayed on the inner wall, so that the paint fits better with the pipeline, preventing the paint on the inner wall of the pipeline from being sprayed unevenly due to the influence of gravity, and improving the paint spraying effect;

[0057] As a preferred embodiment of the present invention: the hot air pipe 19 is wound around the paint pipe 4, and the inner wall of the central sleeve 1 is provided with a heat-insulating layer 20;

[0058] In specific operation, the winding of the hot air pipe 19 around the paint pipe 4 increases the temperature of the paint in the paint pipe 4, which helps to improve the fluidity of the paint and make the paint particles sprayed from the rotating nozzle more uniform. At the same time, the thermal insulation layer 20 arranged on the inner wall of the central sleeve 1 prevents the heat loss of the hot air and the paint. According to the different types of paint, the temperature of the hot air delivered by the hot air conveying device is adjusted to keep the temperature of the paint in a temperature range with good fluidity. For example, if the optimal use temperature range of the paint is 20 degrees Celsius to 30 degrees Celsius, the temperature of the hot air delivered by the hot air conveying device can be adjusted to 20 degrees Celsius to 30 degrees Celsius, so that the paint can be used within a suitable temperature, so that the spraying is more uniform and the paint spraying effect is improved;

[0059] In general, the present invention cooperates with the preheating ring 16 and the hot air pipe 19. On the one hand, hot air is sprayed onto the inner wall of the pipe to preheat the pipe and dry the paint sprayed on the inner wall of the pipe, so that the paint adheres better to the inner wall of the pipe. On the other hand, the hot air pipe 19 is wrapped around the paint pipe to improve the fluidity of the paint, so that the sprayed paint particles are more uniform, thereby improving the paint spraying effect.

[0060] As a preferred embodiment of the present invention: the cleaning disc 12 is detachably connected to the first support shaft 6, and the dirt suction disc 9 is detachably connected to the second support shaft 7;

[0061] Since the diameters of the inner walls of the pipes vary, in actual operation, when the sizes of the suction plate 9 and the cleaning plate 12 cannot adapt to the diameter of the inner walls of the pipes, the cleaning plate 12 on the first support shaft 6 or the suction plate 9 on the second support shaft 7 can be disassembled to achieve replacement of the cleaning plate 12 and the suction plate 9. Figure 6 As shown, annular grooves are provided on the first support shaft 6 and the second support shaft 7. When the cleaning disc 12 and the dirt suction disc 9 need to be replaced, the cleaning disc 12 connected to the first support shaft 6 can be disassembled by twisting the cleaning disc 12, and then the dirt suction disc 9 connected to the second support shaft 7 can be disassembled by twisting the dirt suction disc 9, thereby adapting to pipes of different diameters by replacing the cleaning disc 12 and the dirt suction disc 9 that match the inner diameter of the pipe. The detachable cleaning disc 12 and the dirt suction disc 9 improve the use efficiency of the present invention.

[0062] As a preferred embodiment of the present invention: a placing cylinder is fixed on one end of the center sleeve 1 close to the rotary nozzle, and the placing cylinder is used to place the rotary nozzle. A telescopic cylinder 21 is fixedly connected to one end of the connecting shaft 5 close to the center sleeve 1. The telescopic cylinder 21 is arranged on the bottom surface of the center sleeve 1 close to the suction plate 9, and the output end of the telescopic cylinder 21 is fixedly connected to the connecting shaft 5; a shielding piece 22 is provided on the side of the placing cylinder away from the center sleeve 1.

[0063] When the paint spraying equipment cleans the inner wall of the pipeline, in order to prevent impurities from falling on the rotating nozzle, so that the rotating nozzle is mixed with impurities when spraying paint later, affecting the spraying effect, during the process of the paint spraying equipment advancing to the other side of the pipeline, the telescopic cylinder 21 is in a retracted state, so that the rotating nozzle is in the placement tube, and a shielding piece 22 is provided outside the placement tube. When impurities fall toward the rotating nozzle, the placement tube cooperates with the shielding piece 22 to prevent impurities from falling on the rotating nozzle.

[0064] When the paint spraying equipment starts to spray paint on the inner wall of the pipeline, the telescopic cylinder 21 is started by the controller, and the output end of the telescopic cylinder 21 drives the connecting shaft 5, so that the rotating spray head on the connecting shaft 5 extends out of the placement tube to spray paint on the inner wall of the pipeline;

[0065] The arrangement of the placement tube and the shielding sheet 22 prevents impurities from interfering with the spraying operation, thereby reducing the influence of impurities on the inner wall of the pipeline on the spraying effect.

[0066] As a preferred embodiment of the present invention: the paint tube 4, cleaning plate 12, air intake pipe 13, hot air pipe 19 and exhaust pipe 11 are all made of rubber. Specifically, the paint tube 4, cleaning plate 12, air intake pipe 13, hot air pipe 19 and exhaust pipe 11 are all ductile. The cleaning plate 12 made of rubber material can be inflated to adapt to the diameter of the inner wall of the pipeline when in the working state and deflated and shrunk when not in the working state and no longer fits the inner wall of the pipeline; and the paint tube 4, air intake pipe 13, hot air pipe 19 and exhaust pipe 11 drive the connecting shaft 5 to extend and retract the placement tube at the output end of the telescopic cylinder 21, and then extend and shorten, so as to ensure that the paint spraying on the inner wall of the pipeline of the present invention can be carried out smoothly.

[0067] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A paint spraying device, comprising a controller, a central sleeve (1) and a telescopic rod (2), wherein the telescopic rod (2) is evenly fixed on the outer surface of the central sleeve (1); A rotating wheel (3) rotatably connected to an end of the telescopic rod (2) away from the central sleeve (1); It is characterized by further comprising: A paint tube (4), one end of which extends into the central sleeve (1), and an end of the paint tube (4) away from the central sleeve (1) is connected to a paint conveying device; A connecting shaft (5) connected to the portion of the paint tube (4) located inside the central sleeve (1); A first supporting shaft (6) fixedly connected to an end of the connecting shaft (5) away from the central sleeve (1); A second support shaft (7) fixedly connected to the first support shaft (6); A rotating spray head (8) is rotationally connected to the connecting shaft (5) and is rotationally connected to the paint pipe (4) via a slip ring; A dirt suction plate (9) is located on a side of the connecting shaft (5) away from the paint tube (4), and has a first cavity (14) formed therein. A side of the dirt suction plate (9) away from the rotating spray head is evenly provided with dirt suction holes (10); An exhaust pipe (11), one end of which extends into the central sleeve (1), the end of the exhaust pipe (11) away from the central sleeve (1) is connected to the exhaust device, the end of the exhaust pipe (11) close to the rotating nozzle (8) is connected to the first cavity (14), and the exhaust pipe (11) passes through the connecting shaft (5) and the first supporting shaft (6); A cleaning plate (12) is located on a side of the dirt suction plate (9) away from the central sleeve (1), and has a second cavity (15) formed therein; The cleaning plate (12) forms a relatively closed space with the dirt suction plate (9) when in use; An air inlet pipe (13), one end of which extends into the central sleeve (1); an end of the air inlet pipe (13) away from the central sleeve (1) is connected to the air pump; an end of the air inlet pipe (13) close to the dirt suction plate (9) is connected to the second cavity (15); and the air inlet pipe (13) passes through the connecting shaft (5), the first support shaft (6), the dirt suction plate (9) and the second support shaft (7); The dirt suction plate (9) is sleeved with a preheating ring (16) on its curved surface, a hot air cavity (17) is provided in the preheating ring (16), hot air holes (18) are evenly opened on a side of the preheating ring (16) away from the dirt suction plate (9), the hot air cavity (17) is connected to hot air via a hot air pipe (19), one end of the hot air pipe (19) extends into the center sleeve (1), the end of the hot air pipe (19) away from the center sleeve (1) is connected to a hot air conveying device, and the hot air pipe (19) passes through the connecting shaft (5) and the first supporting shaft (6); The hot air pipe (19) is wound around the paint pipe (4); The inner wall of the central sleeve (1) is provided with a heat-insulating layer (20).

2. A paint spraying device according to claim 1, characterized in that: The cleaning disc (12) is detachably connected to the second support shaft (7), and the dirt suction disc (9) is detachably connected to the first support shaft (6).

3. A paint spraying device according to claim 2, characterized in that: A placement cylinder is fixed to one end of the central sleeve (1) close to the rotary nozzle, and the placement cylinder is used to place the rotary nozzle. A telescopic cylinder (21) is fixedly connected to one end of the connecting shaft (5) close to the central sleeve (1). The telescopic cylinder (21) is arranged on the bottom surface of the central sleeve (1) close to the dirt suction plate (9), and the output end of the telescopic cylinder (21) is fixedly connected to the connecting shaft (5).

4. A paint spraying device according to claim 3, characterized in that: A shielding sheet (22) is provided on a side of the placement tube away from the central sleeve (1).

5. A paint spraying device according to claim 4, characterized in that: The paint pipe (4), the cleaning plate (12), the air intake pipe (13), the hot air pipe (19) and the exhaust pipe (11) are all made of rubber.

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