Multi-functional spraying device for interior decoration and its construction method

Abstract

The application discloses a multifunctional spraying device for indoor decoration and a construction method thereof, which comprises a movable base provided with a paint tank and a water tank; a spray gun, a head end of the spray gun is connected with an adapter disc, the adapter disc is provided with a through hole communicated with the head end, the adapter disc is rotatably provided with a rotary disc, the rotary disc is provided with a plurality of spray heads of different specifications and models, at least one spray head is connected with the through hole, the rotary disc is provided with a locking structure for locking the adapter disc, the spray gun is detachably connected with the paint tank or the water tank through a liquid conveying pipe; a cyclone separator, the movable base is provided with a recovery tank, a discharge port of the cyclone separator is connected with the recovery tank, an input port of the cyclone separator is connected with an air return cover through a suction air pipe, the spray gun is detachably arranged in the air return cover, and an exhaust port of the cyclone separator is connected with an air purifier. The application solves the problems that the existing paint spraying equipment is inconvenient to replace spray heads of different specifications and cannot process paint particles not attached in air.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction, in particular to a multifunctional spraying device for indoor decoration and a construction method thereof. BACKGROUND

[0002] In decoration, the walls in the room need to be painted. In the process of indoor decoration, paint spraying is an important surface treatment process in indoor decoration, which can make paint evenly adhere to the surface of the wall, furniture, etc., forming a smooth coating, and can match various colors and color effects to meet different decoration styles and personal preferences. Compared with manual brushing, paint spraying is usually faster, providing a protective film for walls, wood, etc., preventing moisture, corrosion and wear;

[0003] The existing paint spraying equipment (such as Chinese patent CN108756170B) is inconvenient to replace different sizes of spray heads, and cannot process air without adhering paint particles. SUMMARY

[0004] In order to overcome the defects of the prior art, a multifunctional spraying device for indoor decoration and a construction method thereof are provided to solve the problems of the existing paint spraying equipment that is inconvenient to replace different sizes of spray heads and cannot process air without adhering paint particles.

[0005] To achieve the above purpose, a multifunctional spraying device for indoor decoration is provided, comprising:

[0006] A mobile base is provided with a paint tank and a water tank;

[0007] A spray gun is provided with an adapter disc at the head end, the adapter disc is provided with a through hole connected to the head end, the adapter disc is rotatably provided with a swivel disc, the swivel disc is provided with a plurality of spray heads of different specifications, at least one spray head is connected to the through hole, the swivel disc is provided with a locking structure for locking the adapter disc, and the spray gun is detachably connected to the paint tank or water tank through a liquid delivery pipe;

[0008] A cyclone separator is provided on the mobile base, the discharge port of the cyclone separator is connected to the recovery tank, the input port of the cyclone separator is connected to the air return hood through a suction air pipe, the spray gun is detachably installed in the air return hood, and the exhaust port of the cyclone separator is connected to an air purifier.

[0009] Further, a perforation is provided at the top of the air return hood, and the spray gun is detachably installed in the perforation.

[0010] Further, the through hole is connected with a socket pipe, an inner wall of the socket pipe is formed with a plurality of guide grooves arranged along an axial direction of the socket pipe, a circumferential surface of the adapter disc is formed with a convex rib, and the convex rib is detachably embedded in the guide grooves.

[0011] Further, an outer edge of the adapter disc is extended to form a plug-in flange, the plug-in flange is arranged in a circle along a circumferential direction of the adapter disc, the convex rib extends to an outside of the plug-in flange, an inside of the plug-in flange is formed with a ring groove, and an outer edge of the rotary disc is rotatably embedded in the ring groove.

[0012] Further, the inside of the plug-in flange is provided with a plurality of lock holes, the plurality of lock holes are arranged at intervals along the circumferential direction of the adapter disc, and the locking structure comprises:

[0013] a base mounted on the rotary disc;

[0014] a lock rod, one end of the lock rod is elastically mounted on the base, and the other end of the lock rod is detachably inserted into a lock hole.

[0015] Further, the base is provided with an assembly hole arranged towards the inside of the plug-in flange, the lock rod is slidably arranged in the assembly hole, and one end of the lock rod is connected to a hole bottom of the assembly hole through a spring.

[0016] Further, the base is provided with a sliding groove communicated with the assembly hole, the sliding groove is arranged along a length direction of the assembly hole, the lock rod is connected with a push block, the push block is slidably arranged in the sliding groove, and one side of the push block extends to an outside of the sliding groove.

[0017] Further, the application further comprises a booster air pump, and the booster air pump is detachably connected to the paint tank or the water tank through a gas conveying pipe.

[0018] Further, the application further comprises a premixing tank, the premixing tank is mounted on the paint tank, the premixing tank is connected with a plurality of feeding pipes, and the premixing tank is communicated with the paint tank through a material conveying pipe.

[0019] The application provides a construction method of a multifunctional spraying device for indoor decoration, comprising the following steps:

[0020] Based on the type of paint and spraying requirements, the rotary disc on the adapter disc at the head end of the spray gun is rotated to allow a spray head to be connected to the through hole of the adapter disc, and the adapter disc is locked through the locking structure.

[0021] The spray gun is detachably mounted in the air return cover;

[0022] The spray gun is connected to the paint tank through a liquid conveying pipe;

[0023] The paint in the paint tank is delivered to the spray gun through the delivery pipe and sprayed on the building wall through the one spray head, while the cyclone separator is opened, the air around the rotary disc is sent to the cyclone separator by the air return cover, the cyclone separator separates the paint particles in the air, and the separated air is discharged after being purified by the air purifier, and the separated paint particles are discharged into the recovery tank.

[0024] After the paint spraying is completed, the spray gun is connected to the water tank through the delivery pipe;

[0025] The clean water in the water tank is delivered to the spray gun through the delivery pipe and flushes the paint tank through the one spray head.

[0026] The indoor decoration and decoration multifunctional spraying device has the advantages that different specifications and models of spray heads are realized by the rotary connection of the adapter disc and the rotary disc, different spraying requirements are met, and the comprehensiveness of the indoor decoration spraying device is increased. The indoor decoration and decoration multifunctional spraying device has the advantages that the spray gun is combined with the air return cover, the paint particles in the air that are not attached to the wall are separated by the cyclone separator, the exhaust gas is purified by the air purifier before being discharged, green construction and environmental protection construction of paint spraying are realized. The indoor decoration and decoration multifunctional spraying device has the advantages that the water tank and the paint tank are switched for use, the spray gun can be used to spray clean water to clean the paint tank, and the influence of paint adhesion on subsequent use is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0027] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments made with reference to the following drawings:

[0028] Figure 1 The structure diagram of the multifunctional spraying device for indoor decoration and decoration of the embodiment of the present application.

[0029] Figure 2 The structure diagram of the back of the multifunctional spraying device for indoor decoration and decoration of the embodiment of the present application.

[0030] Figure 3 The structure diagram of the mobile base of the embodiment of the present application.

[0031] Figure 4 The structure diagram of the spray gun of the embodiment of the present application.

[0032] Figure 5 The structure diagram of the adapter disc of the embodiment of the present application.

[0033] Figure 6 The structure diagram of the rotary disc of the embodiment of the present application.

[0034] Figure 7 It is an exploded view of the locking structure of the embodiment of the present application.

[0035] Figure 8 It is a structural view of the infusion tube of the embodiment of the present application.

[0036] Figure 9 It is a structural view of the cyclone separator of the embodiment of the present application.

[0037] Figure 10 It is a structural view of the return air cover of the embodiment of the present application.

[0038] Figure 11 It is a structural view of the premixing tank of the embodiment of the present application.

[0039] Figure 12 It is a sectional view of the premixing tank of the embodiment of the present application. DETAILED DESCRIPTION

[0040] The present application will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related application, and are not a limitation on the application. In addition, it should be noted that, for the convenience of description, only the parts related to the application are shown in the drawings.

[0041] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0042] Referring to Figures 1 to 12 The present application provides a multifunctional spraying device for indoor decoration, comprising: a mobile base 1, a spray gun 2, and a cyclone separator 3.

[0043] Referring to Figures 1 to 3 The mobile base 1 is rectangular. The mobile base is provided with rollers at four corners. The mobile base 1 is provided with a paint tank 11 and a water tank 12.

[0044] Referring to Figures 4 to 6As shown, the spray gun 2 has opposite head end and tail end. The head end of the spray gun 2 is connected with an adapter disc 21. The adapter disc 21 is provided with a through hole a communicated with the head end. The adapter disc 21 is rotatably mounted with a swivel disc 22. The swivel disc 22 is mounted with a plurality of spray heads 23 of different specifications. At least one spray head 23 is connected with the through hole a. The swivel disc 22 is mounted with a locking structure 24 for locking the adapter disc 21. The spray gun 2 is detachably connected with the paint tank 11 or the water tank 12 through a liquid delivery pipe 25. Specifically, the tail end of the spray gun is connected with the liquid delivery pipe. When the liquid delivery pipe is connected with the paint tank, the spray gun can be used for spraying paint. When the liquid delivery pipe is connected with the water tank, the spray gun can be used for spraying water for cleaning the paint tank.

[0045] The cyclone separator 3 is used for separating paint particles in the air which do not adhere to the wall surface. Specifically, a recovery tank 31 is mounted on the mobile base 1. The discharge port of the cyclone separator 3 is connected with the recovery tank 31. The input port of the cyclone separator 3 is connected with the air return hood 21 through a suction air pipe 322. The spray gun 2 is detachably mounted in the air return hood 21. The exhaust port of the cyclone separator 3 is connected with an air purifier 33.

[0046] In combination Figure 4 and Figure 10 As shown, the air return hood is rectangular. Referring to Figure 9 As shown, the opposite sides of the air return hood are connected with the suction air pipe through branch pipes. The top of the air return hood 21 is provided with a perforation. The spray gun 2 is detachably mounted in the perforation. Specifically, the direction of the spray head of the spray gun is consistent with the direction of the opening of the air return hood.

[0047] The perforation is connected with a socket pipe 321. The socket pipe is arranged inside the air return hood. The inner wall of the socket pipe 321 is formed with a plurality of guide grooves. The guide grooves are arranged along the axial direction of the socket pipe 321. The circumferential surface of the adapter disc 21 is formed with a convex rib 211. The convex rib is detachably embedded in the guide groove.

[0048] As a preferred embodiment, the outer edge of the adapter disc 21 is extended to form a plug-in flange. The plug-in flange is arranged along the circumferential direction of the adapter disc 21. The convex rib extends to the outside of the plug-in flange. The inner side of the plug-in flange is formed with a ring groove 210. The outer edge of the swivel disc 22 is rotatably embedded in the ring groove 210.

[0049] In the embodiment, the inner side of the plug-in flange is provided with a plurality of lock holes. The plurality of lock holes are arranged along the circumferential direction of the adapter disc 21.

[0050] Specifically, referring to Figure 4 and Figure 7 As shown, the locking structure 24 includes a base 241, a locking rod 242 and a spring 243.

[0051] The base 241 is installed on the rotary disc 22. One end of the lock rod 242 is elastically installed on the base 241, and the other end of the lock rod 242 is detachably inserted into a lock hole.

[0052] In the embodiment, the base 241 is provided with an assembly hole arranged towards the inner side of the insertion flange. The lock rod 242 is slidably arranged in the assembly hole. One end of the lock rod 242 is connected to the hole bottom of the assembly hole through the spring 243.

[0053] Continuously referring to Figure 7 As shown, the base 241 is provided with a sliding groove. The sliding groove is arranged along the length direction of the assembly hole. The lock rod 242 is connected with a push block 243. The push block 243 is slidably arranged in the sliding groove. One side of the push block 243 extends to the outside of the sliding groove.

[0054] As a preferred embodiment, referring to Figure 2 As shown, the multifunctional spraying device for interior decoration further comprises a booster air pump 4. The booster air pump 4 is detachably connected to the paint tank 11 or the water tank 12 through a gas conveying pipe.

[0055] As a preferred embodiment, referring to Figure 11 and Figure 12 As shown, the multifunctional spraying device for interior decoration further comprises a premixing tank 5. The premixing tank 5 is installed on the paint tank 11. The premixing tank 5 is connected with a plurality of feeding pipes 51. The premixing tank 5 is communicated with the paint tank 11 through a material conveying pipe 52.

[0056] The present application provides a construction method of a multifunctional spraying device for interior decoration, comprising the following steps:

[0057] S1, based on the type of paint and spraying requirements, rotating the rotary disc 22 on the adapter disc 21 of the head end of the spray gun 2 to make one spray head 23 abut the through hole a of the adapter disc 21, and locking the adapter disc 21 through the locking structure 24.

[0058] S2, detachably installing the spray gun 2 in the air return cover 21.

[0059] S3, connecting the spray gun 2 to the paint tank 11 through the liquid conveying pipe 25.

[0060] S4, the paint in the paint tank 11 is conveyed to the spray gun 2 through the liquid conveying pipe 25, and sprayed on the building wall surface through one spray head 23, while the cyclone separator 3 is opened, the air around the rotary disc 22 is discharged to the cyclone separator 3 through the air return cover 21, the paint particles in the air are separated by the cyclone separator 3, the separated air is purified through the air purifier 33 and then discharged, and the separated paint particles are discharged into the recovery tank 31.

[0061] S5, after the paint spraying is completed, connecting the spray gun 2 to the water tank 12 through the liquid conveying pipe 25.

[0062] S6, the clean water in the water tank 12 is delivered to the spray gun 2 through the infusion pipe 25, and is delivered to a paint flushing tank 11 through a flushing pipe.

[0063] In this embodiment, the spray gun is movably connected with the convex ridge through the adapter disc. The adapter disc is internally provided with a through hole. The adapter disc is movably connected with the rotary disc through the ring groove. The rotary disc is fixedly installed with the spray head near the edge position on the surface. The rotary disc is fixedly installed with the base near the middle position on the surface.

[0064] The base is fixedly installed with the sleeve through the slot. The sleeve is movably connected with the lock rod through the spring.

[0065] The bottom of the cyclone separator is fixedly installed with the recovery tank. The cyclone separator is fixedly connected with the exhaust pipe through the air purifier. The cyclone separator is fixedly connected with the suction air pipe through the air blower. The suction air pipe is fixedly connected with the return air cover through the air cover. The return air cover is provided with the guide groove through the socket pipe.

[0066] The premixing tank is fixedly connected with the valve-equipped feeding pipe through the feeding channel. The upper end of the valve-equipped feeding pipe is fixedly installed with the transparent charging tank. The lower end of the feeding channel is provided with the mixing channel. The lower end of the mixing channel is provided with the discharging channel.

[0067] The anti-skid handle is fixedly installed on the left side of the mobile base. The paint tank is fixedly installed on the upper surface of the mobile base near the left side. The discharging pipe is fixedly installed on the front surface of the paint tank near the bottom. The booster air pump is fixedly installed on the upper surface of the paint tank near the front surface.

[0068] The back surface of the adapter disc is inserted into the outlet of the spray gun. The convex ridge is fixedly installed on the outer wall of the adapter disc. The ring groove is provided in the inner part of the ring groove near the edge position. The rotary disc is rotatably connected in the inner part of the ring groove. The lock hole is provided in the inner wall of the rotary disc.

[0069] The slot is provided on the surface of the base near one end position. The sleeve is fixedly installed in the inner part of the slot. One end of the spring is fixedly installed in the inner part of the sleeve. The lock rod is fixedly installed at the other end of the spring. The outer wall of the lock rod is fixedly installed with the toggle block. The slide groove is provided on the surface of the base near the other end position. The assembly hole is provided at both ends of the slide groove. The lock rod is slidably connected in the inner part of the assembly hole. The size of the lock rod is matched with the lock hole. The toggle block is slidably connected in the inner part of the slide groove.

[0070] The air purifier is fixedly installed on the exhaust port of the cyclone separator. The exhaust pipe is fixedly installed on the upper end of the air purifier. The air blower is fixedly installed on the air inlet of the cyclone separator. One end of the suction air pipe is fixedly connected with the air blower. One end of the air cover is fixedly connected with the other end of the suction air pipe. The return air cover is fixedly installed on the other end of the air cover. The return air cover is fixedly installed on the outer wall of the socket pipe. The guide groove is provided on the inner wall of the socket pipe.

[0071] The size of the socket pipe is matched with the adapter disc. The size of the convex ridge is matched with the guide groove.

[0072] The bottom of the premixing tank is fixedly installed on the upper surface of the paint box near the back. The feeding channel is arranged on the upper surface of the premixing tank near the two sides. The lower end of the feeding pipe with valve is fixedly installed in the feeding channel. The bottom of the transparent charging tank is fixedly installed with the bearing frame.

[0073] The mixing channel is located at the middle position in the premixing tank. The discharging channel is located directly below the mixing channel.

[0074] The water tank is fixedly installed on the upper surface of the mobile base near the upper right position. The bottom of the recovery tank is fixedly installed on the upper surface of the water tank. The front surface of the water tank is fixedly installed with the pipeline winding frame. The front surface of the pipeline winding frame is fixedly installed with the hook. The spray gun is hung on the hook. The infusion tube is movably installed on the outer wall of the pipeline winding frame. The size of the infusion tube is matched with the discharging pipe. The infusion tube is sleeved with the sleeve on the outer wall. The sleeve is provided with the pipe groove on the outer wall. The size of the pipe groove is matched with the suction air pipe.

[0075] The adapter disc is tightly inserted with the spraying port of the spray gun, and no relative movement occurs automatically. The through hole is communicated with the interface on the back surface of the adapter disc, and the paint of the spray gun is only sprayed out from the through hole. The ring groove is tightly connected with the rotary disc in advance, and no relative movement occurs after rotation. The bottom of the rotary disc is tightly abutted with the surface of the adapter disc, and the paint cannot flow out from the two. The number of the lock holes is matched with the number of the spray heads. The lock holes are distributed along the circumferential wall of the adapter disc, so that the spray heads are correspondingly switched to the next group of spray heads after the lock rods enter another group of lock holes.

[0076] The air outlet of the cyclone separator is fixedly connected with the air inlet of the air purifier, so that the gas separated by the cyclone separator is directly purified in the air purifier, the harmful substances are adsorbed and treated, and then the purified gas is directly discharged to the external environment through the exhaust pipe. The air outlet end of the fan is fixedly connected with the air inlet end of the cyclone separator. The air inlet end of the fan is connected with the air baffle through the suction air pipe, and the air containing the unattached paint particles near the air baffle is sucked into the cyclone separator through the air baffle for separation.

[0077] Different colors of paint are poured into different transparent charging tanks. The transparent charging tank is provided with a scale, which facilitates the control of the proportion of raw materials. The valve of the feeding pipe with valve can control the paint in the transparent charging tank to enter the feeding channel. The mixing channel is arranged below the feeding channel. Different paints are mixed after falling from the feeding channel to the mixing channel.

[0078] Specific, through the adapter plate and the connection between the spray gun, so that the rotary disc can rotate in the adapter plate ring groove, so that the paint from different size nozzle spray, meet the different spraying needs, through the lock rod in the assembly hole inside sliding, so that the spring is compressed, with the rotary disc rotation, lock rod along the inner wall of the adapter plate sliding, until the automatic ejection in the next group of lock hole, realize the nozzle conversion after the fixed, so that the converted nozzle and the through hole coincide, paint from the converted nozzle spray, with the spray gun itself adjustment function cooperation, increase the comprehensive of indoor decoration spraying device.

[0079] Specific, through the guide groove on the socket pipe and the convex ridge on the outer wall of the adapter plate connection, install the air return hood on the outer wall of the adapter plate, when the spray gun paint, through the start of the fan, the air containing unattached paint particles from the suction pipe into the cyclone separator inside, the paint particles and gas separation, paint particles collected in the recycling box inside, after processing for secondary use, gas after air purifier from the exhaust pipe, avoid air pollution.

[0080] Specific, different colors of paint through the transparent loading tank under the valve feed pipe into the feed channel of the premix tank, different colors of paint will be from both sides to the middle of the mixing channel, preliminary mixing, then from the discharge channel into the paint tank, reduce the time of paint mixing, improve the efficiency of stirring.

[0081] Specific, through the pipeline winding frame for winding infusion tube, through the pipe groove connecting the suction pipe and infusion tube, avoid the suction pipe and infusion tube winding each other when spraying, through the hook convenient for the storage of spray gun, after spraying can be connected to the water tank infusion tube, through the spray gun to paint tank and other components cleaning, avoid paint adhesion and affect the subsequent use.

[0082] The working principle of the multifunctional spraying device for indoor decoration and decoration of the application is as follows:

[0083] First, the different colors of paint are introduced into the feed channel of the premix tank through the valve-equipped feed pipe under the transparent charging tank, and the different colors of paint will gather from both sides to the middle mixing channel for preliminary mixing, and then from the discharge channel into the paint tank, the paint is stirred by the stirrer in the paint tank, after stirring is completed, one end of the infusion tube is inserted on the discharge pipe, the other end is inserted on the spray gun, the spray gun is taken off from the hook, the nozzle to be used is confirmed, the toggle block is pushed, the lock rod slides along the assembly channel and squeezes the spring until the lock rod is separated from the current lock hole, the rotary disc is rotated, the nozzle to be used is opposite to the through hole, the toggle block is released, the lock rod is inserted into the corresponding lock hole under the action of the spring, the nozzle conversion is completed, then the air return cover is installed on the outer wall of the adapter disc through the guide groove clamped on the convex ridge of the adapter disc, and the suction air pipe is clamped in the pipe groove of the set on the outer wall of the infusion tube, the spraying starts, the valve of the air pump and the discharge pipe is opened, so that the paint enters the infusion tube from the discharge pipe, then the spray gun is opened for spraying, the air containing unattached paint particles is sucked into the cyclone separator during spraying, the paint particles are separated from the gas, the paint particles are collected in the recovery tank, and after treatment, they are used again, the gas is discharged from the exhaust pipe after passing through the air purifier, after the spraying is completed, the infusion tube is pulled out from the discharge pipe and connected to the water tank, the connecting pipe of the air pump is installed in the water tank, finally the air pump is started, the paint tank and the remaining parts are cleaned through the spray gun, after completion, all parts are reset, stored and arranged, thus the whole work flow is completed.

[0084] The multifunctional spraying device for indoor decoration and decoration of the application realizes the conversion and use of different specifications and models of nozzles through the rotary connection of the adapter disc and the rotary disc, thereby meeting different spraying requirements and increasing the comprehensiveness of the indoor decoration spraying device. The multifunctional spraying device for indoor decoration and decoration of the application realizes green construction and environmental protection construction of paint spraying by combining the air return cover with the spray gun together, separating paint particles not attached to the wall surface from the air by using the cyclone separator, and purifying and discharging the exhaust gas after passing through the air purifier. The multifunctional spraying device for indoor decoration and decoration of the application can use the spray gun to spray clean water to clean the paint tank by switching the use of the water tank and the paint tank, thereby avoiding the influence of paint adhesion on subsequent use.

[0085] The above description is only the preferred embodiment of the application and the explanation of the applied technical principles. It should be understood by those skilled in the art that the scope of the application involved in the application is not limited to the technical solutions formed by the specific combination of the above technical features, and also covers other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by replacing the above features with the technical features disclosed in the application (but not limited to) having similar functions.

Claims

1. A multi-functional spraying device for interior decoration and renovation, characterized in that, include: A mobile base, wherein a paint tank and a water tank are installed on the mobile base; A spray gun, the head end of which is connected to an adapter plate, the adapter plate having a through hole communicating with the head end, a rotary table rotatably mounted on the adapter plate, the rotary table being equipped with multiple nozzles of different specifications and models, at least one nozzle being connected to the through hole, the rotary table being equipped with a locking structure for locking the rotary table, and the spray gun being detachably connected to the paint tank or water tank via an infusion tube; A cyclone separator is provided, with a recovery box installed on the movable base. The drain port of the cyclone separator is connected to the recovery box. The input port of the cyclone separator is connected to a return air hood through a suction pipe. The spray gun is detachably installed inside the return air hood. The exhaust port of the cyclone separator is connected to an air purifier. The top of the return air hood is provided with a perforation, and the spray gun is detachably installed in the perforation; The perforated connection is connected to a socket tube, and the inner wall of the socket tube is formed with multiple guide grooves. The guide grooves are arranged along the axial direction of the socket tube. The circumferential surface of the adapter plate is formed with ridges, and the ridges are detachably embedded in the guide grooves. The outer edge of the adapter plate extends to form a plug-in flange, which is arranged in a circle along the circumference of the adapter plate. The protrusion extends to the outer side of the plug-in flange, and an annular groove is formed on the inner side of the plug-in flange. The outer edge of the rotary plate is rotatably embedded in the annular groove.

2. The multi-functional spraying device for interior decoration and renovation according to claim 1, characterized in that, The inner side of the insertion flange is provided with a plurality of locking holes, which are spaced apart along the circumference of the adapter plate. The locking structure includes: The base is installed on the rotary table; A locking rod, one end of which is elastically mounted on the base, and the other end of which is detachably inserted into a lock hole.

3. The multi-functional spraying device for interior decoration and renovation according to claim 2, characterized in that, The base has an assembly channel facing the inner side of the insertion flange. The locking rod is slidably disposed in the assembly channel, and one end of the locking rod is connected to the bottom of the assembly channel by a spring.

4. The multi-functional spraying device for interior decoration and renovation according to claim 3, characterized in that, The base has a groove that communicates with the assembly channel. The groove is arranged along the length of the assembly channel. The locking rod is connected to a toggle block, which slides in the groove. One side of the toggle block extends to the outside of the groove.

5. The multi-functional spraying device for interior decoration and renovation according to claim 1, characterized in that, It also includes a booster pump, which is detachably connected to the paint tank or the water tank via an air supply pipe.

6. The multi-functional spraying device for interior decoration and renovation according to claim 1, characterized in that, It also includes a premixing tank, which is installed on the paint tank and is connected to multiple feed pipes. The premixing tank is connected to the paint tank through a conveying pipe.

7. A construction method for a multi-functional spraying device for interior decoration and renovation as described in any one of claims 1 to 6, characterized in that, Includes the following steps: Depending on the type of paint and the spraying requirements, rotate the rotary table on the adapter plate at the head end of the spray gun so that a nozzle aligns with the through hole of the adapter plate, and lock the adapter plate by a locking structure. The spray gun is detachably installed inside the return air shroud; The spray gun is connected to the paint tank via an infusion tube; The paint in the paint tank is delivered to the spray gun via the infusion tube and sprayed onto the building wall via the nozzle. At the same time, the cyclone separator is turned on, and the return air hood exhausts the air from the rotary table to the cyclone separator. The cyclone separator separates the paint particles in the air. The separated air is purified by the air purifier and then discharged. The separated paint particles are discharged into the recycling bin. After the paint is applied, the spray gun is connected to the water tank via an infusion tube. The clean water in the water tank is delivered to the spray gun via the infusion pipe, and then used to rinse the paint tank via one of the nozzles.

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