Batch straight pipe outer wall spraying device with water-based paint recycling function

Abstract

The invention provides a batch straight pipe outer wall spraying device with a water-based paint recycling function. The batch straight pipe outer wall spraying device comprises a sealed cabin, a spraying mechanism, a drying mechanism, a liquid supply mechanism, a recycling mechanism and a numerical control module. The spraying mechanism and the recycling mechanism are both arranged in the sealed cabin, and the recycling mechanism communicates with the spraying mechanism; the spraying mechanism comprises a spraying rod and a centrifugal roller, a to-be-sprayed pipe fitting is installed in the spraying direction of the spraying rod through pipe fitting fixing assemblies, and the pipe fitting fixing assemblies are distributed on the inner wall of the centrifugal roller in an arc shape; the drying mechanism is used for drying a to-be-sprayed pipe fitting, and the liquid supply mechanism is connected with the spraying mechanism and the recycling mechanism; the numerical control module is in signal connection with each mechanism; by means of the spraying mechanism, the drying mechanism and the recycling mechanism, the spraying, recycling and drying integrated function is achieved, the pipe fittings are subjected to batch high-quality spraying, meanwhile, coating recycling is achieved, the situation that the surrounding environment is polluted due to the fact that the coating escapes is prevented, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of spraying, and in particular to a batch straight pipe outer wall spraying device with a water-based paint recovery function. Background Art

[0002] In the production process of pipe fittings, in order to increase the service life of pipe fittings during use, surface treatment is usually required. Paint is applied to the surface of the object to be protected or decorated, and can form a continuous film that is firmly attached to the object to be coated. It is usually based on resin, oil, and emulsion, with or without pigments, fillers, and corresponding additives. Since oil-based paints will volatilize harmful organic solvents during the drying process, which has a great impact on the environment and human health, water-based paints are gradually widely used to improve environmental protection and reduce environmental pollution. Water-based paints use water as a solvent, and their volatile organic compound (VOC) content is low, which not only reduces pollution to the environment, but also reduces the harm to the health of construction workers. With the increasingly stringent environmental regulations and the improvement of public environmental awareness, water-based paints have become the development trend of the paint industry due to their environmental advantages.

[0003] However, during the spraying process, air flow disturbances in open spaces may cause the atomized water-based paint to diffuse into the air, thereby causing environmental pollution problems. At the same time, in order to cover the outer walls of all pipes with paint during the spraying process, the spraying range is slightly larger than the distribution range of the pipes, and some of the paint is difficult to use. In addition, after the storage, transportation, and spraying processes of water-based paint, it will remain in the paint storage tank, liquid supply pipe, and sprayer, which may easily cause pipe or nozzle blockage, resulting in reduced spraying efficiency, uneven coating, and waste of paint. In addition, using traditional spraying technology, only a single pipe can be sprayed, and the water-based paint dries slowly, affecting production efficiency. Summary of the invention

[0004] The object of the present invention is to provide a high-efficiency spraying device which can improve the utilization rate of paint and avoid paint overflow, thereby realizing the integration of spraying, drying and recycling.

[0005] To achieve the above-mentioned purpose, the present invention proposes a batch straight pipe outer wall spraying device with a water-based paint recovery function, comprising a sealed cabin, a spraying mechanism, a drying mechanism, a liquid supply mechanism, a recovery mechanism and a numerical control module:

[0006] The sealed cabin is composed of a sealed door, a cabin body and a base; the spraying mechanism is installed in the cabin body;

[0007] The spraying mechanism comprises a spray rod, a centrifugal drum, a first driving machine and a second driving machine: the spray rod is arranged in the centrifugal drum; the centrifugal drum is connected to the first driving machine by transmission; the pipe to be sprayed is installed in the spraying direction of the spray rod through a pipe fixing assembly, and the pipe fixing assembly is distributed in an arc shape and installed on the inner wall of the centrifugal drum, so that the pipe to be sprayed is connected to the second driving machine by transmission;

[0008] The sealed cabin is provided with a recovery mechanism connected to the spraying mechanism; the drying mechanism is used to dry the spraying mechanism;

[0009] The liquid supply mechanism is connected to the spraying mechanism and the recovery mechanism respectively;

[0010] The numerical control module is respectively connected with the spraying mechanism, the liquid supply mechanism, the drying mechanism and the recovery mechanism by signals.

[0011] Furthermore, the recovery mechanism includes a recovery cabin, which is arranged in the base of the sealed cabin and below the centrifugal drum; the recovery cabin is connected to the liquid storage tank through a diaphragm pump to achieve the recycling of the paint; trapezoidal liquid collecting grooves are scattered on the barrel wall surrounding the centrifugal drum, and the opening of the trapezoidal liquid collecting groove on the inner wall of the centrifugal drum is larger than the opening of the outer wall, which is beneficial to the gathering of water-based paint during centrifugal recovery and reduces paint residue.

[0012] Further, the pipe to be sprayed is installed through the pipe fixing assembly and the length adjustment assembly, so that the pipe to be sprayed is distributed in an arc shape and installed on the inner wall of the centrifugal drum through the pipe fixing assembly, and the pipe to be sprayed is connected to the second driving machine through the pipe rotating assembly;

[0013] The pipe length adjustment assembly and the pipe fixing assembly are respectively aligned and installed on the inner side and the outer opening side of the centrifugal drum;

[0014] The pipe fixing assembly includes a central axis and three slide bars with springs and limit sliders, the three slide bars are respectively connected to the central axis vertically and are evenly distributed around the central axis; the three slide bars are located in the same plane; one end of the spring on each slide bar is connected to the central axis, and the other end is connected to the limit slider; a limit hole is provided at one end of the limit slider, a raised adjustment handle is provided at the middle end, and two limit baffles are provided at the end;

[0015] The length adjustment assembly is formed by replacing the three limiting sliders in the pipe fixing assembly with three limiting plates; the limiting plates are provided with two rows of protrusions and a square hole at the end;

[0016] The pipe rotating assembly is arranged on the back side of the centrifugal drum, and comprises a keyed gear and a plurality of driven wheels. The keyed gear is drivingly connected to the second motor, and the central shaft is respectively inserted into the central hole of each driven wheel.

[0017] Furthermore, the drying mechanism is composed of a blower and an air collecting sleeve, the blower is installed on the outer side of the rear wall of the sealed cabin body and is connected to the air collecting sleeve to realize the integration of spraying and drying; the air collecting sleeve is wrapped around the outer side of the spray rod, and the lower half of the spray rod is densely distributed with liquid pressurized nozzles within a range of 160°, and the lower half of the air collecting sleeve is densely distributed with air outlets within a range of 160°, and each air outlet coincides with the geometric center of each liquid pressurized nozzle.

[0018] Furthermore, a counterweight adjustment module is provided on the centrifugal drum, and the counterweight adjustment module is composed of two sliding rods, a counterweight weight and two square sealing pieces. One end of the two sliding rods is fixedly connected to the centrifugal drum, and the other end is blocked by the square sealing piece; the area of ​​the square sealing piece is larger than the cross-sectional area of ​​the sliding rod; the counterweight weight is connected to the two sliding rods through a perforated sleeve.

[0019] Furthermore, the liquid supply mechanism includes a feed port, a liquid storage tank and a diaphragm pump:

[0020] The feed port is installed on the outer rear wall of the sealed cabin and is connected to the recovery cabin through a pressure-limiting cut-off valve; the pressure-limiting cut-off valve is installed on a conduit connecting the feed port and the recovery cabin, and when the pressure reaches a certain value, the valve cover is lifted up.

[0021] The liquid storage tank and the diaphragm pump are fixedly installed on the base of the sealed cabin, the liquid storage tank is connected to the diaphragm pump pipeline; the diaphragm pump is connected to the spray rod through a liquid supply conduit.

[0022] When the paint is poured into the feed port, it enters the recovery cabin from the feed port, and is then pumped into the pressure storage tank through the diaphragm pump, and then pumped into the spray rod.

[0023] Furthermore, the CNC module consists of a CNC platform and a CNC line. The CNC platform is installed on the side wall surface of the cabin and is connected to the spraying mechanism, liquid supply mechanism, drying mechanism and recovery mechanism signals through the CNC line; the CNC platform consists of a display screen, a multi-function control knob, a speed fine-tuning knob, a switch button, a return button, and an emergency stop button.

[0024] Furthermore, the centrifugal drum is drivingly connected to the first driving machine through a planetary gear set, the planetary gear set includes a planetary driving wheel, a ring gear and two planetary driven wheels, the planetary driving wheel is drivingly connected to the first driving machine, the ring gear is fixed to the back outer wall of the centrifugal drum; the planetary driving wheel is meshed with the ring gear; the planetary driven wheel is drivingly meshed with the ring gear; the center holes of the two planetary driven wheels and one planetary driving wheel constitute the three vertices of an equilateral triangle, and the center of the ring gear coincides with the center of the equilateral triangle.

[0025] Furthermore, the sealing door is telescopically connected to the cabin body through a telescopic rod, and the telescopic rod is respectively installed at the upper edge and one side corner of the lower end of the sealing door, so as to ensure the stability of the sealing door opening and closing process and facilitate the staff to take and place the pipes; the bottom end of the sealing door is installed with load-bearing wheels to prevent the dead weight of the sealing door from affecting the telescopic rod. At the same time, the load-bearing wheels are made of polyurethane material to better cope with the oily and dusty ground in the factory; a sealing frame is provided along the inner wall of the sealing door, and a collecting groove with a certain inclination angle is provided above the lower edge of the sealing frame, and the end of the collecting groove is smoothly connected to a guide groove, and the guide groove extends into the recovery cabin; the inner wall of the sealing door is also provided with a sealing ring facing the centrifugal drum and a sealing plug facing the spray rod.

[0026] Furthermore, the sealing frame is a double-layer rubber sealing frame, which can play a buffering and protective role on the cabin frame when the door is closed, and at the same time help to form a sealed environment; the sealing ring is made of polytetrafluoroethylene. Since polytetrafluoroethylene has excellent chemical corrosion resistance and low friction coefficient characteristics, the polytetrafluoroethylene sealing ring has the advantage of being in contact with the paint for a long time without affecting its performance; the thickness of the polytetrafluoroethylene sealing ring is equal to the thickness of the first layer of the double-layer rubber sealing frame, and the width is greater than the thickness of the cylinder wall at the opening of the centrifugal drum. When the centrifugal drum is operating normally, it can avoid contact with it and thus hinder its normal operation. When the centrifugal drum is abnormal and vibrates greatly, a buffer zone is formed between the sealing door, and at the same time it has a certain blocking effect, limiting the splashing range of the paint in the centrifugal drum.

[0027] Furthermore, the sealing plug is a butyl rubber sealing plug, which is directly opposite to the cone of the wind gathering sleeve. The cross-sectional diameter of the butyl rubber sealing plug close to the opening end of the cabin body is slightly smaller than the diameter of the wind gathering sleeve, and the cross-sectional diameter of the end close to the inner wall of the sealing door is slightly larger than the diameter of the wind gathering sleeve. At the same time, butyl rubber has good air tightness and can seal the wind gathering sleeve to ensure that the air fluid can only enter the sealed cabin through the air outlet, thereby ensuring the flow rate of the air fluid.

[0028] Furthermore, the inner wall of the sealed cabin, the inner wall of the liquid supply mechanism, the inner and outer walls of the spray rod, the inner and outer walls of the centrifugal drum, the inner wall of the recovery cabin, and the inner and outer walls of the air collecting sleeve of the drying mechanism are all super hydrophobic surfaces.

[0029] Compared with the prior art, the advantages of the present invention are:

[0030] 1. The present invention realizes the integrated functions of spraying, recycling and drying through the spraying mechanism, drying mechanism and recycling mechanism. While carrying out batch high-quality spraying on pipe fittings, it realizes the recycling of paint, prevents the paint from escaping and polluting the surrounding environment, and greatly improves the production efficiency.

[0031] 2. The present invention realizes a fully enclosed spraying environment by arranging the spraying mechanism in a sealed cabin, so that when water-based paint is sprayed on the pipe fittings, the paint will not escape and pollute the surrounding environment, making it have the advantage of no pollution to the surrounding environment.

[0032] 3. The present invention controls the pipe rotating assembly through a numerical control module, thereby accurately controlling the number of rotations of the pipe, ensuring that the coating thickness of each batch during the spraying process is the same, and ensuring the stability and high quality of the spraying effect.

[0033] 4. The present invention maximizes the utilization area of ​​the coating and effectively improves the coating utilization rate by placing the pipe to be sprayed in an arc shape just below the spray rod, with the center of the circle coinciding with the circular direction of the spray rod and the center angle being slightly smaller than the center angle range of the nozzle spray.

[0034] 5. The present invention connects the recovery mechanism with the spraying mechanism and the liquid supply mechanism, uses the recovery mechanism to recover the water-based paint that escapes in the sealed cabin, and then filters it through the liquid supply mechanism to achieve recycling.

[0035] 6. The present invention sets the inner wall of the sealed cabin, the inner wall of the funnel-shaped feed port, the inner wall of the liquid storage tank, the inner wall of the diaphragm pump, the inner wall of the liquid supply conduit, the inner wall of the pressure-limiting cut-off valve, the inner and outer walls of the wall spray rod, the inner and outer walls of the centrifugal drum, the inner wall of the recovery cabin, and the inner and outer walls of the air gathering casing as super-hydrophobic surfaces, so that the surfaces have excellent self-cleaning properties and corrosion resistance, making it difficult for water-based paint to adhere, effectively reducing paint residue and waste, and at the same time not causing nozzle clogging, thereby ensuring spraying efficiency and coating quality.

[0036] 7. The present invention places the pipes to be sprayed in an arc shape just below the spray rod, so that the spraying mechanism can spray multiple pipes at the same time. The drying time of the water-based paint sprayed on the pipes is shortened by the drying mechanism, thereby greatly improving the spraying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of a batch straight pipe outer wall spraying device with a water-based paint recovery function according to an embodiment of the present invention;

[0038] Figure 2 It is a schematic diagram of the internal structure of the cabin in the batch straight pipe outer wall spraying device with water-based paint recovery function according to an embodiment of the present invention;

[0039] Figure 3 It is a schematic diagram of the back structure of the cabin in the batch straight pipe outer wall spraying device with water-based paint recovery function according to an embodiment of the present invention;

[0040] Figure 4 It is a side plan view of a batch straight pipe outer wall spraying device with a water-based paint recovery function according to an embodiment of the present invention;

[0041] Figure 5 It is a schematic diagram of the sealing door structure in a batch straight pipe outer wall spraying device with a water-based paint recovery function according to an embodiment of the present invention;

[0042] Figure 6 for Figure 5 An enlarged schematic diagram of the guide groove structure at A;

[0043] Figure 7 It is a structural schematic diagram of a centrifugal drum in a batch straight pipe outer wall spraying device with a water-based paint recovery function according to an embodiment of the present invention;

[0044] Figure 8 It is a schematic diagram of the back structure of the centrifugal drum in the batch straight pipe outer wall spraying device with water-based paint recovery function according to an embodiment of the present invention;

[0045] Fig. 9 It is a schematic diagram of the combined structure of the spray rod and the air gathering sleeve in the batch straight pipe outer wall spraying device with the water-based paint recovery function according to an embodiment of the present invention;

[0046] Fig.10 It is a schematic diagram of the wind-gathering casing structure;

[0047] Fig.11 Schematic diagram of the spray rod structure;

[0048] Fig.12 for Fig.11 An enlarged schematic diagram of the hydraulic nozzle structure at location B;

[0049] Fig.13 This is a schematic diagram of the structure of the pipe fixing assembly in the batch straight pipe outer wall spraying device with water-based paint recovery function according to an embodiment of the present invention;

[0050] Fig.14 This is a schematic diagram of the length adjustment assembly structure in a batch straight pipe outer wall spraying device with a water-based paint recovery function according to an embodiment of the present invention;

[0051] Fig.15It is a schematic diagram of the structure of the limit slider in the pipe fixing assembly;

[0052] Fig.16 It is a schematic diagram of the structure of the limit piece in the length adjustment component;

[0053] Fig.17 This is a schematic diagram of the structure of a numerical control platform in a batch straight pipe outer wall spraying device with a water-based paint recovery function according to an embodiment of the present invention;

[0054] Fig.18 It is a schematic diagram of manual operation of a batch straight pipe outer wall spraying device with a water-based paint recovery function according to an embodiment of the present invention;

[0055] Fig.19 Schematic diagram of the spraying range of the batch straight pipe outer wall spraying device with water-based paint recovery function in the embodiment of the present invention

[0056] Fig. 20 This is a schematic diagram of the structure of a planetary gear set and a pipe rotating assembly in a batch straight pipe outer wall spraying device with a water-based paint recovery function according to an embodiment of the present invention;

[0057] Fig.21 It is a schematic diagram of the function of the length adjustment component and the pipe to be sprayed in the batch straight pipe outer wall spraying device with water-based paint recovery function in an embodiment of the present invention.

[0058] 1-sealed cabin, 11-sealed door, 111-telescopic rod, 112-polyurethane load-bearing wheel, 113-double-layer rubber sealing frame, 114-polytetrafluoroethylene sealing ring, 115-butyl rubber sealing plug, 116-collection tank, 117-diversion tank, 12-cabin, 13-base

[0059] 2-liquid supply mechanism, 21-feeding port, 22-liquid storage tank, 23-diaphragm pump, liquid supply conduit 24

[0060] 3-spraying mechanism, 31-spray rod, 311-hydraulic nozzle, 331-limiting plate, 32-pipe fixing assembly, 321-center axis, 322-square slide bar, 323-spring, 324-limiting slider, 3241-limiting baffle, 3242-adjusting handle, 3243-square limiting hole, 33-length adjustment assembly, 331-limiting plate, 3311-limiting protrusion, 3312-square hole, 34-pipe rotating assembly, 341-keyed gear, 342-driven wheel, 35-DC motor

[0061] 4-recovery mechanism, 41-centrifugal drum, 411-trapezoidal liquid collecting tank, 412-counterweight adjustment module, 4121-counterweight slide bar, 4122-counterweight weight, 4123-square counterweight sealing piece, 413-three-phase motor, 414-planetary gear set, 4141-planetary drive wheel, 4142-gear ring, 4143-planetary driven wheel, 42-recovery cabin

[0062] 5-drying mechanism, 51-blower, 52-air collecting sleeve, 521-air outlet,

[0063] 6-CNC module, 61-CNC platform, 611-display screen, 612-multi-function control knob, 613-speed fine-tuning knob, 614-switch button, 615-return button, 616-emergency stop button. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be further described below.

[0065] This embodiment provides a batch straight pipe outer wall spraying device with a water-based paint recovery function, such as Figure 1-5 As shown, the device includes a sealed cabin 1, a spraying mechanism 3, a drying mechanism 5, a liquid supply mechanism 2, a recovery mechanism 4 and a numerical control module 6, wherein the spraying mechanism 3 and the recovery mechanism 4 are both installed in the sealed cabin 1, and the recovery mechanism 4 is connected to the spraying mechanism 3; the liquid supply mechanism 2 is respectively connected to the spraying mechanism 3 and the recovery mechanism 4; the drying mechanism 5 is used to dry the spraying mechanism 3; and the numerical control module 6 is respectively connected to the spraying mechanism 3, the liquid supply mechanism 2, the drying mechanism 5 and the recovery mechanism 4 by signal.

[0066] Among them, Figure 3 As shown, the sealed cabin 1 includes a sealed door 11, a cabin body 12 and a base 13. The cabin body 12 is fixed on the base 13. The sealed door 11 is telescopically connected to the cabin body 12 through four telescopic rods 111. The area of ​​the sealed door 11 is slightly larger than the opening area of ​​the cabin body 12. When closed, a closed spraying environment can be formed, which facilitates the opening and closing of the sealed cabin 1.

[0067] The spraying mechanism 3 is installed in the cabin 12, and the spraying mechanism 3 includes a spray rod 31, a centrifugal drum 41, a first driving machine - a three-phase motor 413 and a second driving machine - a DC motor 35, wherein the spray rod 31 is installed at the inner center of the centrifugal drum 41; the centrifugal drum 41 is connected to the three-phase motor 413 through a planetary gear set 414; the pipe to be sprayed is installed in the spraying direction of the spray rod 31 through a pipe fixing assembly 32, and the pipe fixing assembly 32 is distributed in an arc shape and installed on the inner wall of the centrifugal drum 41, so that the pipe to be sprayed is installed on the centrifugal drum 41 through the pipe fixing assembly 32, and is connected to the DC motor 35 through the pipe rotating assembly 34.

[0068] The drying mechanism 5 for drying the spraying mechanism 3 includes a blower 51 and an air collecting sleeve 52. Figure 2 and Figure 3 As shown, the air collecting sleeve 52 is wrapped around the outer periphery of the spray rod 31 , and the blower 51 is installed on the rear wall of the sealed cabin body 12 and is directly connected to the air collecting sleeve 52 .

[0069] like Figure 9-12 As shown in FIG. 1 , the lower half of the spray rod 31 is densely covered with liquid pressurized nozzles 311, and the lower half of the air collection sleeve 52 is densely covered with air outlets 521. Each air outlet 521 coincides with the geometric center of each liquid pressurized nozzle 311, so that the air outlet 521 is directly opposite to the liquid pressurized nozzle 311, and the air collection sleeve 52 will not cause obstruction during spraying. Fig.19 As shown, the spraying range section a of the hydraulic nozzle 311 is a fan-shaped with a central angle of 160°, ensuring that the pipe fittings with a distribution angle of 150° are fully sprayed.

[0070] In addition, a recovery chamber 42 is provided in the base 13 of the sealed chamber 1, forming a recovery mechanism 4 for collecting the paint overflowed during the spraying process; the recovery chamber is connected to the spray rod 31 through the centrifugal drum 41, and is connected to the liquid storage tank 22 through the diaphragm pump 23, so as to realize the recycling of the paint. Figure 2 and Figure 7 As shown, the recovery chamber 42 is located below the centrifugal drum 41; trapezoidal liquid collecting grooves 411 are evenly distributed on the barrel wall surrounding the centrifugal drum 41. In this embodiment, the opening of the trapezoidal liquid collecting groove 411 located on the inner wall of the centrifugal drum 41 is larger than the opening of the outer wall, which is beneficial to the gathering of water-based paint during centrifugal recovery and reduces paint residue.

[0071] The liquid supply mechanism 2 is connected to the spray mechanism 3 and the recovery mechanism 4 respectively, and the liquid supply mechanism 2 includes a funnel-shaped feed port 21, a liquid storage tank 22, a diaphragm pump 23 and a liquid supply conduit 24, wherein the funnel-shaped feed port 21 is fixed on the outer surface of the rear wall of the sealed cabin 1, and is connected to the recovery cabin 42 through a pressure-limiting cut-off valve 25; the plane where the bottom of the funnel-shaped feed port 21 is located is higher than the plane where the top of the recovery cabin 42 is located; the liquid storage tank 22 and the diaphragm pump 23 are both fixedly installed on the base 13 of the sealed cabin 1, and the liquid storage tank 22 and the diaphragm pump 23 are connected through a pipeline; the diaphragm pump 23 is connected to the spray rod 31 through the liquid supply conduit 24, thereby realizing the connection between the liquid supply mechanism 2 and the spray mechanism 3; the liquid storage tank 22 is connected to the recovery cabin 42 through the diaphragm pump 23, realizing the connection between the liquid supply mechanism 2 and the recovery mechanism 4, thereby realizing the integrated function of spraying and recovery circulation.

[0072] The numerical control module 6 is respectively connected to the spraying mechanism 3, the liquid supply mechanism 2, the drying mechanism 5 and the recycling mechanism 4 for controlling the entire spraying, recycling and drying integrated process. The numerical control module 6 is composed of a numerical control platform 61 and a numerical control line 62. Figure 3 and Fig.17 As shown, the numerical control platform 61 is fixedly installed on the side wall of the cabin 12, and is connected to the spraying mechanism 3, the liquid supply mechanism 2, the drying mechanism 5 and the recovery mechanism 4 through the numerical control line signal, so as to realize the precise control of all steps; the numerical control platform 61 is composed of a display screen 611, a multi-function control knob 612, a speed fine-tuning knob 613, a switch button 614, a return button 615, and an emergency stop button 616, wherein the switch button 614 is used to control the switch of the numerical control mechanism 6; when the multi-function control knob 612 is turned left and right, the cursor on the display screen 611 will move up and down on the menu bar, press the multi-function control knob 612 to confirm, and press the return button 615 to return to the previous page; after selecting "adjust the centrifugal drum speed" or "adjust the pipe speed", the speed can be manually adjusted through the speed fine-tuning knob 613. When the machine is running abnormally, pressing the emergency stop button 616 can cut off the power supply.

[0073] In this embodiment, each pipe to be sprayed is fixed by the pipe fixing assembly 32 and the length adjustment assembly 34, ensuring that each pipe to be sprayed is parallel to the wall of the centrifugal drum 41, ensuring the stability of the pipe when rotating, and without blocking the outer wall of the pipe, which will not affect the spraying area. The length adjustment assembly 34 and the pipe fixing assembly 32 are aligned and installed on the inner side and the outer opening side of the centrifugal drum 41 through the same central axis 321, and are arranged and distributed in an arc with a central angle of 150° around the center point of the centrifugal drum 41, so that the pipe to be sprayed installed therein is also distributed in an arc shape around the center point of the centrifugal drum 41 and installed in the inner wall of the centrifugal drum 41.

[0074] At the same time, the central shaft 321 is connected to the driven wheel 342 in the pipe rotating assembly 34, and the pipe rotating assembly 34 is connected to the DC motor drive, so that the pipe to be sprayed passes through the pipe rotating assembly 34 and is connected to the DC motor 35 to achieve 360° rotation of the pipe.

[0075] like Figure 13-16 As shown, the pipe fixing assembly 32 includes three square slide bars 322 with springs 323 and limit sliders 324, wherein the three square slide bars 322 are fixed around the central axis 321 at intervals of 120° and close to the open end of the centrifugal drum 41, and are respectively vertically connected to the central axis 321; the three square slide bars 322 are located in the same plane; one end of the spring 323 on each slide bar is connected to the central axis 321, and the other end is connected to the limit slider 324. Fig.15The shown limiting slider 324 has a square limiting hole 3243 at one end to ensure that the limiting slider 324 will not deflect when sliding on the square slide bar 322; a raised adjustment handle 3242 is provided at the middle end to facilitate the staff to adjust the position of the slider; two outer octagonal limiting baffles 3241 are provided at the end to fix the pipe. The compression spring makes the distance from the center of the central axis 321 to the limiting baffle 3241 smaller than the radius of the pipe. After releasing the hand, the elastic force of the spring 323 fixes the pipe, so that the spraying of pipes with different diameters can be realized.

[0076] like Fig.16 As shown, the length adjustment assembly 34 is composed of three limit plates 331 replacing the three limit sliders 324 in the above-mentioned pipe fixing assembly 32; the limit plate 331 is provided with two rows of protrusions 3311 and a square hole 3312 at the end; Fig.21 As shown, the length adjustment component is arranged at the other end of the central axis 321 close to the inner side of the centrifugal drum 41, and the limiting piece 331 is sleeved on the square slide bar 322 through the square hole 3312. Since the square hole 3312 is slightly larger than the square slide bar 322, and the limiting slider 324 takes the spring as the fulcrum, a lever is formed. When the pipe is pushed in, the longer end of the limiting piece 331 will deviate about 2° toward the central axis 321. At this time, due to the combined effect of the elastic force of the spring 323 and the limiting protrusion 3311, the pipe will be fixed. Through the length adjustment component 34, spraying of pipes of different lengths can be achieved.

[0077] The specific process of fixing and installing the pipe fittings by using the pipe fitting fixing assembly 32 and the length adjustment assembly 34 is as follows:

[0078] The pipe is pushed into and sleeved on the three long strip-shaped limiting pieces 331 on a length adjustment component 34. At this time, the limiting pieces 331 will move closer to the central axis 321 due to the elastic deformation of the spring 323, and the spring elastic force will fix the pipe in the radial direction. When the edge of the pipe close to the open end of the centrifugal drum 41 can be just installed on the pipe fixing component 32, stop pushing the pipe on the length adjustment component 34, and fix the open end of the pipe close to the centrifugal drum 41 on the pipe fixing component 32 through the compression spring 323 and the limiting slider 324.

[0079] In this embodiment, the pipe rotating assembly 34 is disposed on the back side of the centrifugal drum 41. Figure 8As shown, the pipe rotating assembly 34 includes a keyed gear 341 and six driven wheels 342, wherein three driven wheels are meshedly connected to one side of the keyed gear 341, and the other three driven wheels are meshedly connected to the other side of the keyed gear 341, and the driven wheels 342 are meshedly connected to each other in sequence; a central shaft 321 in the pipe fixing assembly 32 is respectively inserted into the central hole of each driven wheel 342, so that the pipe fixing assembly 32 drives the pipe to be sprayed, and the driven wheel 342 is transmission-connected to the keyed gear 341, and the keyed gear 341 is drive-connected to the DC motor 35. When the DC motor 35 drives the keyed gear 341 to rotate clockwise, it drives the driven wheel 342 to rotate counterclockwise, thereby driving the pipe to be sprayed to achieve a 360° rotation.

[0080] In this embodiment, the centrifugal drum 41 is connected to the three-phase motor 413 through a planetary gear set 414, and the planetary gear set 414 controls the rotation of the centrifugal drum 41. The planetary gear set 414 includes a planetary driving wheel 4141, a ring gear 4142 and two planetary driven wheels 4143. Figure 3 , Figure 8 and Fig. 20 As shown, the planetary driving wheel 4141 is drivingly connected to the three-phase motor 413. The planetary driving wheel 4141 does not contact the rear wall of the centrifugal drum 41, but only meshes with the ring gear 4142; the ring gear 4142 is fixed on the back wall of the centrifugal drum 41, and is meshed with the planetary driving wheel 4141, so that when the three-phase motor 413 drives the planetary driving wheel 4141 to rotate clockwise, the ring gear 4142 is driven to rotate clockwise, thereby driving the centrifugal drum 41 to rotate; at the same time, the ring gear 4142 is also respectively meshed with the two planetary driven wheels 4143, and when the ring gear 4142 rotates clockwise, the two planetary driven wheels 4143 are driven to rotate clockwise, thereby achieving the effect of fixing the center of the ring gear 4142 during operation. The two planetary driven wheels 4143 and the planetary driving wheel 4141 have the same size and are fixed to the rear wall of the centrifugal drum 41 through an axis; the center holes of the two planetary driven wheels 4143 and the one planetary driving wheel 4141 constitute the three vertices of an equilateral triangle, and at the same time, the center of the constituted equilateral triangle coincides with the center of the ring gear 4142, thereby improving the rotation stability of the centrifugal drum 41 and avoiding the installation of gears in the center of the rear wall of the centrifugal drum 41 to affect the spraying mechanism 3 and the drying mechanism 5.

[0081] The pipe rotating assembly 34 and the planetary gear set 414 are driven by two motors, a DC motor and a three-phase motor, respectively, so that power distribution is reasonable, energy is saved, and interference between the two mechanisms is reduced.

[0082] In this embodiment, the centrifugal drum 41 is further provided with a weight adjustment module 412. Figure 7 and Figure 8As shown, the counterweight adjustment module 412 is composed of two counterweight slide bars 4121, a counterweight weight 4122 and two square counterweight sealing pieces 4123, wherein the two counterweight slide bars 4121 are vertically fixed to the top of the centrifugal drum 41, one end of each is fixedly connected to the centrifugal drum 41, and the other end is blocked by two square sealing pieces 4123; the area of ​​the two square sealing pieces 4123 is larger than the cross-sectional area of ​​the counterweight slide bar 4121; two through holes are opened on the counterweight weight 4122, and it is connected to the two counterweight slide bars 4121 through the two through holes.

[0083] In this embodiment, the sealing door 11 is telescopically connected to the cabin body 12 through four telescopic rods 111. Figure 5 As shown, three telescopic rods 111 are installed on the upper edge of the sealed door 11, and one telescopic rod 111 is installed at the lower left corner of the sealed door 11, which ensures the stability of the sealed door 11 during the opening and closing process and facilitates the staff to take and put the pipes; in addition, a pair of polyurethane load-bearing wheels 112 are installed at the bottom end of the sealed door 11 to prevent the dead weight of the sealed door 11 from affecting the telescopic rod 111. At the same time, the use of polyurethane material can better cope with the oily and dusty ground in the factory; a double-layer rubber sealing frame 113 is provided along the inner wall of the sealed door 11 to provide a buffering and protective effect on the frame of the cabin 12 when closing the door, and to form a sealed environment at the same time; the inner wall of the sealed door 11 is also provided with a polytetrafluoroethylene sealing ring 114 facing the centrifugal drum 41 and a butyl rubber sealing plug 115 facing the spray rod 31, wherein the thickness of the polytetrafluoroethylene sealing ring 114 is equal to the thickness of the first layer of the double-layer rubber sealing frame 113, and the width is large. The thickness of the cylinder wall at the opening of the centrifugal drum 41 can avoid contact with the centrifugal drum 41 during normal operation, thereby preventing it from hindering its normal operation. When the centrifugal drum 41 vibrates abnormally and greatly, a buffer zone is formed between the centrifugal drum 41 and the sealing door 11, and at the same time, it has a certain blocking effect, thereby limiting the splashing range of the paint in the centrifugal drum 41; the center of the butyl rubber sealing plug 115 is not only facing the spray rod 31, but also facing the frustum of the wind gathering sleeve 52 wrapped around the outer periphery of the spray rod 31. In this embodiment, the cross-sectional diameter of the butyl rubber sealing plug 115 close to the opening end of the cabin body is slightly smaller than the diameter of the wind gathering sleeve 52, and the cross-sectional diameter of the other end close to the inner wall of the sealing door is slightly larger than the diameter of the wind gathering sleeve 52. At the same time, the sealing plug is made of butyl rubber, which has good air tightness and can be sealed with the wind gathering sleeve 52 to ensure that the air fluid can only enter the sealed cabin 1 through the air outlet 521, thereby ensuring the flow rate of the air fluid.

[0084] In addition, if Figure 6 As shown, a collecting groove 116 with a certain inclination angle is provided above the bottom edge of the sealing door 11, and the end of the collecting groove 116 is smoothly connected to a guide groove 117, which extends into the recovery chamber 42. When the sealing door 11 is closed, the end plane of the guide groove 117 is slightly higher than the highest horizontal plane of the recovery chamber 42.

[0085] In this embodiment, the inner walls of the sealing door 11, the collecting groove 116, and the inner walls of the guide groove 117 are all super-hydrophobic surfaces, so that the water-based paint splashed onto the inner wall of the sealing door 11 will roll down along the inner wall of the sealing door 11 into the collecting groove 116, and then roll down into the recovery cabin 42 through the collecting groove 116 and the guide groove 117.

[0086] In this embodiment, the inner wall of the sealed cabin 1, the inner wall of the funnel-shaped feed port 21, the inner wall of the liquid storage tank 22, the inner wall of the diaphragm pump 23, the inner wall of the liquid supply conduit 24, the inner wall of the pressure limiting cut-off valve 25, the inner and outer walls of the wall spray rod 31, the inner and outer walls of the centrifugal drum 41, the inner wall of the recovery cabin 42, and the inner and outer walls of the air gathering sleeve 52 are all super-hydrophobic surfaces. The super-hydrophobic surface has excellent self-cleaning properties and corrosion resistance, and water-based paint is difficult to adhere to.

[0087] The initial state of the batch straight pipe outer wall spraying device with water-based paint recovery function in this embodiment is: the sealing door 11 is closed, and the pipe fixing assembly 32 and the length adjustment assembly 33 are located at the bottom of the centrifugal drum 41.

[0088] The specific process of spraying by the batch straight pipe outer wall spraying device with water-based paint recovery function of this embodiment is as follows:

[0089] S1) Fixing the pipe: Open the sealing door 11, and place the pipe to be sprayed symmetrically into the centrifugal drum 41 from the side without the telescopic rod 111 below the sealing door 11, first push the end facing the rear wall of the centrifugal drum 41 into the length adjustment component 33, and then fix the other end to the end facing the opening of the centrifugal drum 41 through the pipe fixing component 32;

[0090] S2) Adjusting the counterweight: adjusting the position of the counterweight 412 according to the mass of the pipe to be sprayed by the counterweight adjustment module 6 on the centrifugal drum 41, and closing the sealing door 11;

[0091] S3) Adding paint: Open the pressure-limiting cut-off valve 25 and add the water-based paint into the funnel-shaped feed port 21;

[0092] S4) Spraying the pipe fittings: The pipe fittings are rotated by the pipe fitting rotating assembly 34, and the hydraulic nozzle 311 on the spray rod 31 sprays the atomized water-based paint;

[0093] S5) Recovering the paint: During the high-speed rotation of the centrifugal drum 41, the excess paint enters the sealed cabin 1 space outside the centrifugal drum 41 through the trapezoidal liquid collecting tank 411, and falls into the recovery cabin 42. The paint in the recovery cabin 42 is filtered by the diaphragm pump 23 and stored in the liquid storage tank 22. The recovered paint in the liquid storage tank 22 re-enters the spray rod 31 through the diaphragm pump 23;

[0094] S6) Drying the pipe fittings: The blower 51 continuously blows air into the air collecting sleeve 52, and the air fluid dries the pipe fittings through the air outlet 521. The pressure limiting cut-off valve 25 adjusts the air pressure of the sealed cabin 1, and the air flows out from the funnel-shaped feed port 21;

[0095] S7) Taking out the pipe fittings: Check the sprayed pipe fittings, keep the pipe fitting fixing assembly 32 and the length adjustment assembly 33 located at the bottom inner wall of the centrifugal drum 41, take them out and transfer them to subsequent processing steps.

[0096] Fig.18 This is a schematic diagram of the manual operation of the device of this embodiment. In steps S1-S7, fixing and removing the pipes require manual operation, and other processes can be completed by the CNC module 6.

[0097] The above is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any technician in the relevant technical field, without departing from the scope of the technical solution of the present invention, makes any form of equivalent replacement or modification to the technical solution and technical content disclosed in the present invention, which does not depart from the content of the technical solution of the present invention and still falls within the protection scope of the present invention.

Claims

1. A batch straight pipe outer wall spraying device with water-based paint recovery function, characterized in that: Including sealed cabin, spraying mechanism, drying mechanism, liquid supply mechanism, recovery mechanism and CNC module: The sealed cabin is composed of a sealed door, a cabin body and a base; the spraying mechanism is installed in the cabin body; The spraying mechanism comprises a spray rod, a centrifugal drum, a first driving machine and a second driving machine: the spray rod is arranged in the centrifugal drum; the centrifugal drum is connected to the first driving machine by transmission; the pipe to be sprayed is installed in the spraying direction of the spray rod through a pipe fixing assembly, and the pipe fixing assembly is distributed in an arc shape and installed on the inner wall of the centrifugal drum, so that the pipe to be sprayed is connected to the second driving machine by transmission; The sealed cabin is provided with a recovery mechanism connected to the spraying mechanism; the drying mechanism is used to dry the spraying mechanism; The liquid supply mechanism is connected to the spraying mechanism and the recovery mechanism respectively; The numerical control module is respectively connected with the spraying mechanism, the liquid supply mechanism, the drying mechanism and the recovery mechanism by signals.

2. The batch straight pipe outer wall spraying device with water-based paint recovery function according to claim 1 is characterized in that: The recovery mechanism includes a recovery cabin, which is arranged in the base of the sealed cabin and below the centrifugal drum, and is connected to the liquid storage tank through a diaphragm pump; trapezoidal liquid collecting grooves are scattered on the barrel wall surrounding the centrifugal drum, and the opening of the trapezoidal liquid collecting grooves located on the inner wall of the centrifugal drum is larger than the opening of the outer wall.

3. The batch straight pipe outer wall spraying device with water-based paint recovery function according to claim 1 is characterized in that: The pipe to be sprayed is installed through the pipe fixing assembly and the length adjustment assembly, so that the pipe to be sprayed is distributed in an arc shape and installed on the inner wall of the centrifugal drum through the pipe fixing assembly, and the pipe to be sprayed is connected to the second driving machine through the pipe rotating assembly; The pipe length adjustment assembly and the pipe fixing assembly are respectively aligned and installed on the inner side and the outer opening side of the centrifugal drum; The pipe fixing assembly includes a central axis and three slide bars with springs and limit sliders, the three slide bars are respectively connected to the central axis vertically and are evenly distributed around the central axis; the three slide bars are located in the same plane; one end of the spring on each slide bar is connected to the central axis, and the other end is connected to the limit slider; a limit hole is provided at one end of the limit slider, a raised adjustment handle is provided at the middle end, and two limit baffles are provided at the end; The length adjustment assembly is formed by replacing the three limiting sliders in the pipe fixing assembly with three limiting plates; the limiting plates are provided with two rows of protrusions and a square hole at the end; The pipe rotating assembly is arranged on the back side of the centrifugal drum, and comprises a keyed gear and a plurality of driven wheels. The keyed gear is drivingly connected to the second motor, and the central shaft is respectively inserted into the central hole of each driven wheel.

4. The batch straight pipe outer wall spraying device with water-based paint recovery function according to claim 1 is characterized in that: The drying mechanism consists of a blower and an air collecting sleeve, wherein the blower is installed on the outer side of the rear wall of the sealed cabin body and is connected to the air collecting sleeve; the air collecting sleeve is wrapped around the outer side of the spray rod, and the lower half of the spray rod is densely distributed with liquid pressurized nozzles within a range of 160°, and the lower half of the air collecting sleeve is densely distributed with air outlets within a range of 160°, and each air outlet coincides with the geometric center of each liquid pressurized nozzle.

5. The batch straight pipe outer wall spraying device with water-based paint recovery function according to claim 1 is characterized in that: The centrifugal drum is provided with a counterweight adjustment module, which consists of two sliding rods, a counterweight weight and two square sealing pieces. One end of the two sliding rods is fixedly connected to the centrifugal drum, and the other end is blocked by the square sealing piece; the area of ​​the square sealing piece is larger than the cross-sectional area of ​​the sliding rod; the counterweight weight is connected to the two sliding rods through a perforated sleeve.

6. The batch straight pipe outer wall spraying device with water-based paint recovery function according to claim 2 is characterized in that: The liquid supply mechanism includes a feed port, a liquid storage tank and a diaphragm pump: The feed port is installed on the outer rear wall of the sealed cabin and is connected to the recovery cabin through a pressure limiting cut-off valve; The liquid storage tank and the diaphragm pump are fixedly installed on the base of the sealed cabin, the liquid storage tank is connected to the diaphragm pump pipeline; the diaphragm pump is connected to the spray rod through a liquid supply conduit.

7. The batch straight pipe outer wall spraying device with water-based paint recovery function according to claim 1 is characterized in that: The CNC module consists of a CNC platform and a CNC line. The CNC platform is installed on the side wall surface of the cabin and is connected to the spraying mechanism, liquid supply mechanism, drying mechanism and recovery mechanism signals through the CNC line; the CNC platform consists of a display screen, a multi-function control knob, a speed fine-tuning knob, a switch button, a return button, and an emergency stop button.

8. The batch straight pipe outer wall spraying device with water-based paint recovery function according to claim 1 is characterized in that: The centrifugal drum is connected to the first driving machine through a planetary gear set, and the planetary gear set includes a planetary driving wheel, a ring gear and two planetary driven wheels. The planetary driving wheel is connected to the first driving machine, and the ring gear is fixed on the outer wall of the back side of the centrifugal drum; the planetary driving wheel is meshed with the ring gear; the planetary driven wheel is connected to the ring gear in driving meshing; the center holes of the two planetary driven wheels and one planetary driving wheel constitute the three vertices of an equilateral triangle, and the center of the ring gear coincides with the center of the equilateral triangle.

9. The batch straight pipe outer wall spraying device with water-based paint recovery function according to claim 2 is characterized in that: The sealing door is telescopically connected to the cabin body through a telescopic rod, and the telescopic rod is respectively installed at one side corner of the upper edge and the lower edge of the sealing door; a load-bearing wheel is installed at the bottom end of the sealing door; a sealing frame is provided along the inner wall of the sealing door, and a collecting groove with an inclined angle is provided above the lower edge of the sealing frame, and the end of the collecting groove is smoothly connected to a guide groove, and the guide groove extends into the recovery cabin; the inner wall of the sealing door is also provided with a sealing ring facing the centrifugal drum and a sealing plug facing the spray rod.

10. The batch straight pipe outer wall spraying device with water-based paint recovery function according to claim 2 is characterized in that: The inner wall of the sealed cabin, the inner wall of the liquid supply mechanism, the inner and outer walls of the spray rod, the inner and outer walls of the centrifugal drum, the inner wall of the recovery cabin, and the inner and outer walls of the air collecting sleeve of the drying mechanism are all super hydrophobic surfaces.

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