Coating spraying device for building waterproof engineering

Abstract

The invention relates to a coating spraying device for building waterproof engineering. The coating spraying device comprises a material box used for containing coating, at least one stirring unit used for stirring the coating in the material box, and air compression units used for compressing air, wherein the number of the air compression units is consistent with that of the stirring units. The motor driving assembly can simultaneously drive the stirring unit and the air compression unit to work through a transmission structure; an exhaust structure used for exhausting air in the coating pipeline and a pressure adjusting structure used for adjusting the pressure of coating in the coating pipeline are sequentially arranged between the end, close to the material box, outside the coating pipeline and the end, close to the coating connector, outside the coating pipeline. A trigger type valve which can be closed or opened along with air suction or air exhaust of the air compression unit is arranged at a compressed air outlet of the air compression unit. The spraying device is high in spraying uniformity.

Description

Technical Field

[0001] The invention relates to the field of spraying devices, in particular to a coating spraying device for building waterproofing projects. Background Art

[0002] Workers will apply paint for building waterproofing projects (hereinafter referred to as paint) on buildings to achieve waterproofing effect, but manual application is inefficient and of unstable quality. Therefore, people have developed a spraying device that can spray paint. This spraying device usually includes a suction pipe that can be directly inserted into a paint bucket, an atomization unit and a spray gun. The suction pipe sucks the paint from the paint bucket, and the spray gun instantly atomizes the paint and releases it onto the surface of the object to be painted, which has a high spraying efficiency.

[0003] However, building waterproof coatings are usually viscous liquids at room temperature and are unevenly distributed, with some parts being thinner and some parts being thicker. When spraying using existing spraying devices, uneven spraying will occur.

[0004] Therefore, the existing spraying device has the problem of low spraying uniformity. Summary of the invention

[0005] The present invention aims to overcome the defects of the prior art and provide a coating spraying device for building waterproof engineering to solve the problems of uneven spraying distribution and low spraying efficiency.

[0006] In order to solve the above-mentioned technical problems, the present invention is achieved as follows: A coating spraying device for building waterproof engineering, comprising a material box for placing coating, at least one stirring unit for stirring coating in the material box, an air compression unit for compressing air and the number of which is the same as that of the stirring units, a motor drive assembly capable of driving the stirring unit and the air compression unit to work simultaneously through a transmission structure, and an air spray gun; The material box has a feed inlet; The air spray gun comprises a paint interface and a compressed air interface, the paint interface is connected to the material box through a paint pipeline, and the compressed air interface is connected to the compressed air outlet of the air compression unit through a compressed air delivery component; The paint pipeline is provided with an exhaust structure for exhausting air in the paint pipeline and a pressure regulating structure for regulating the pressure of the paint in the paint pipeline in sequence from one end close to the material box to one end close to the paint interface; The paint pipeline includes a hose portion, the exhaust structure is arranged outside the hose portion, and the exhaust structure is transmission-connected to the motor drive assembly; A trigger valve is provided at the compressed air outlet of the air compression unit, which can be closed or opened as the air compression unit inhales or exhausts air.

[0007] As a further improvement of the present invention, at least four universal wheels are installed at the bottom of the material box to facilitate users to carry and move and reduce the load.

[0008] As a further improvement of the present invention: the stirring unit includes a stirring rod which is transmission-connected to the motor drive assembly through a transmission structure and a porous plate fixedly installed at the bottom of the stirring rod. The paint can be simply sifted through the holes on the porous plate, and the porous plate and the stirring rod can stir the paint.

[0009] As a further improvement of the present invention: the air compression unit includes a compression chamber and a piston that can slide in the compression chamber, a front sealing plate is installed on the front side of the compression chamber, and a compressed air outlet and an air inlet are respectively opened on the front sealing plate; the air compression unit also includes a one-way valve arranged at the air inlet and can be opened or closed as the piston slides; a push rod is vertically installed on the rear side of the piston, the rear end of the push rod is fixedly connected to the front side of a connecting block that can slide back and forth, and the connecting block is connected to the transmission structure. The air compression unit compresses the inhaled air by inhaling air and providing power for the motor drive assembly. There is no need to supplement high-pressure gas from the outside, and continuous spraying power can be provided, thereby improving the spraying efficiency.

[0010] As a further improvement of the present invention: the trigger valve includes a linkage rod that can slide back and forth as the connecting block slides back and forth, and a protrusion is installed at the front end of the linkage rod; the trigger valve includes a baffle plate that can close or open the compressed air outlet by sliding up and down in the front sealing plate, and a passage for passing compressed air is opened on the baffle plate; a group of horizontally arranged parallel rods are fixedly installed on the bottom of the baffle plate, and guide rollers that can drive the baffle plate to slide up and down as the protrusion slides back and forth are rotatably installed between the parallel rods. The trigger valve can block the compressed air outlet in time.

[0011] As a further improvement of the present invention: the motor drive assembly includes a motor and a driven shaft coaxially connected to the output shaft of the motor; the transmission structure includes a first bevel gear fixedly mounted on the driven shaft, a mounting shaft parallel to the driven shaft, and a large bevel gear fixedly mounted on the mounting shaft; a rotating shaft with a center line perpendicular to it is arranged next to the driven shaft, a second bevel gear meshing with the first bevel gear is fixedly mounted on the end of the rotating shaft close to the driven shaft, and a third bevel gear meshing with the large bevel gear is fixedly mounted on the end of the rotating shaft away from the driven shaft; a mounting pin is vertically mounted on the large bevel gear, a stirring unit and a connecting rod are rotatably mounted on the mounting pin, and the end of the connecting rod away from the mounting pin is connected to the air compression unit. Through the transmission structure, the motor drive assembly can simultaneously drive multiple stirring units and multiple air compression units, with a simple structure and easy control.

[0012] As a further improvement of the present invention: the exhaust structure includes a pipe placement rack for placing the paint pipe and an extrusion assembly for squeezing out the air in the paint pipe in the pipe placement rack, and the extrusion assembly is connected to the motor drive assembly through a belt assembly; the pipe placement rack is a hollow cylindrical structure with openings on both sides, and a groove for placing the hose part of the paint pipe is provided on the inner wall of the pipe placement rack; the extrusion assembly includes a herringbone bracket, and the three vertical ends of the herringbone bracket are equipped with extrusion rollers for squeezing the hose part. The exhaust structure can extrude and exhaust the hose part as the motor drive assembly rotates, without the need for other power sources.

[0013] As a further improvement of the present invention, at least one teardrop-shaped protrusion is arranged in the groove to facilitate better squeezing of the hose portion.

[0014] As a further improvement of the present invention: the pressure regulating structure includes a pressure regulating shell, and a through chamber and a pressure relief chamber are respectively provided inside the pressure regulating shell, and the through chamber and the pressure relief chamber are connected through at least two pressure relief holes; a relative paint inlet and a material outlet are provided on the inner wall of the through chamber, and the center lines of the paint inlet and the material outlet are perpendicular to the center line of the pressure relief hole; a baffle capable of sliding in the through chamber is provided in the through chamber, and a first return spring is provided between the top of the baffle and the inner top of the through chamber; a pressure control part capable of controlling the pressure of the paint in the through chamber is provided in the pressure relief chamber, and the bottom of the pressure relief chamber is connected with the material box through a reflux pipe. The pressure regulating structure can change the pressure of the paint, thereby changing the effect of the paint when it is sprayed, which is convenient for the user to adjust according to needs.

[0015] As a further improvement of the present invention: the pressure control part includes a plunger that can slide along the center line of the pressure relief chamber to block the pressure relief hole. A screw is vertically installed on the top of the plunger. The screw is threadedly connected to the pressure regulating shell. The pressure of the paint can be changed by turning the screw, and the operation is simple and convenient.

[0016] The device stirs the paint through the stirring unit to improve the uniformity of the paint, thereby improving the uniformity of the spraying. At the same time, the device also has a pressure regulating structure that can adjust the pressure of the paint, so that the paint pressure can be changed according to the use requirements, the spraying effect can be changed, and the spraying uniformity can be improved. The motor drive component can simultaneously drive the exhaust structure, the stirring unit and the air compression unit to work, complete the work of paint feeding, paint stirring and air compression, and the operation and control are simple.

[0017] The beneficial effects of the present invention are as follows: It can be seen from the above technical scheme that the present application provides a paint spraying device for building waterproofing projects, which stirs the paint through a stirring unit to improve the uniformity of the paint, thereby improving the spraying uniformity. At the same time, the device has a pressure regulating structure that can adjust the pressure of the paint, thereby changing the effect of the paint when spraying. The user can further improve the spraying uniformity after adjusting according to needs. Therefore, the present invention has a higher spraying uniformity.

[0018] The present invention stirs the paint through a stirring unit to improve the uniformity of the paint, thereby improving the spraying uniformity. At the same time, the device has a pressure regulating structure that can adjust the pressure of the paint, thereby changing the effect of the paint when spraying. The user can further improve the spraying uniformity after adjustment according to needs. Therefore, the present invention has a higher spraying uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a left side view of the present invention; Figure 3 is a top view of the present invention; Figure 4 This is a schematic diagram of the overall structure of the present invention without the material box and the universal wheel; Figure 5 It is an assembly diagram of the stirring unit, the transmission structure mounting frame and the motor drive assembly in the present invention; Figure 6 It is a schematic diagram of the overall structure of the stirring unit in the present invention; Figure 7 It is an assembly diagram of the connecting block sliding track and the rear sealing plate in the present invention; Figure 8 It is a schematic diagram of the overall structure of the compression shell in the present invention; Fig. 9 It is a schematic diagram of a partial structure of the present invention from a rear-view angle; Fig.10 It is a partial structural schematic diagram of the present invention; Fig.11 It is an assembly diagram of the air compression unit and the trigger valve in the present invention; Fig.12 It is a schematic diagram of the overall structure of the front sealing plate in the present invention; Fig.13 is a rear view of the front sealing plate of the present invention; Fig.14 It is a schematic diagram of the overall structure of the shielding plate in the present invention; Fig.15It is a perspective assembly diagram of the front sealing plate and the shielding plate in the present invention; Fig.16 It is an assembly diagram of the front sealing plate and part of the one-way valve in the present invention; Fig.17 It is a schematic diagram of the overall structure of the cylindrical cover in the present invention; Fig.18 It is an assembly diagram of the stirring unit, the motor drive assembly and the transmission structure in the present invention from a top view; Fig.19 It is an assembly diagram of the stirring unit, the motor drive assembly and the transmission structure in the present invention; Fig. 20 It is an assembly diagram of the stirring unit, the motor drive assembly and the transmission structure of the present invention from a bottom-up perspective; Fig.21 It is a schematic diagram of the overall structure of the transmission structure mounting frame of the present invention; Fig. 22 It is an assembly diagram of the driven shaft, the stirring unit, the transmission structure and part of the air compression unit in the present invention; Fig.23 It is a schematic diagram of the overall structure of the air spray gun of the present invention; Fig.24 It is an assembly diagram of the exhaust structure, pressure regulating structure, belt assembly, paint pipeline, air spray gun and part of the motor drive assembly in the present invention; Fig.25 It is an assembly diagram of the driven shaft, extrusion, paint pipeline and belt assembly in the present invention; Fig.26 It is a schematic diagram of the overall structure of the placement rack in the present invention; Fig. 27 It is a schematic diagram of the overall structure of the voltage regulating structure in the present invention; Fig.28 It is a perspective view of the voltage regulating structure of the present invention from a left angle; Fig.29 It is a schematic diagram of the overall structure of the pressure regulating housing in the present invention; Fig.30 It is a schematic diagram of the positional relationship among the baffle, the screw and the plunger in the present invention; The names of the components corresponding to the marks in the above drawings are: 1. Material box; 101. Universal wheel; 102. Material inlet; 2. stirring unit; 201. stirring connecting rod; 202. perforated plate; 203. stirring unit mounting frame; 204. limiting rod; 3. Air compression unit; 301. Compression chamber; 302. Piston; 303. Push rod; 304. Connecting block; 305A. Front compressed air outlet; 305B. Rear compressed air outlet; 306. Air inlet; 307. Exhaust port; 308A. Front sealing plate; 308B. Rear sealing plate; 309. Compression housing; 3010. Connecting block sliding track; 3011. Guide rod; 3012. Reinforcement plate; 4. Transmission structure; 401. Transmission structure mounting frame; 402. First bevel gear; 403. Rotating shaft; 404. Second bevel gear; 405. Third bevel gear; 406. Mounting shaft; 407. Large bevel gear; 408. Mounting pin; 409. Connecting rod; 5. Motor drive assembly; 501. Motor; 502. Driven shaft; 503. Driven shaft protective shell; 6. Air spray gun; 601. Paint interface; 602. Compressed air interface; 603. Spray gun stand; 7. Paint pipeline; 8. Compressed air delivery assembly; 801. Pipe joint; 802. Air duct; 9. Exhaust structure; 901. Placement rack; 9011. Groove; 9012. Water drop-shaped protrusion; 902. Extrusion assembly; 9021. Herringbone bracket; 9022. Extrusion roller; 10. Pressure regulating structure; 1001. Pressure regulating shell; 1002. Passing cavity; 1003. Pressure relief cavity; 1004. Pressure relief hole; 1005. Coating inlet; 1006. Discharge port; 1007. Baffle; 1008. First return spring; 1009. Plunger; 1010. Screw; 1011. Return pipe; 11. trigger valve; 1101. baffle plate; 1102. through port; 1103. parallel rod; 1104. guide roller; 1105. linkage rod; 1106. bump; 1107. fourth return spring; 1108. bump sliding frame; 12. Belt assembly; 1201. First pulley; 1202. Belt; 1203. Second pulley 13. One-way valve; 1301. Hollow cylinder; 1302. Perforated plate; 1303. Cylindrical cover; 1304. Third return spring. DETAILED DESCRIPTION

[0020] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments in the embodiments of the present application are within the scope of protection requested by the present application. Definitions of relevant terms involved in this invention: (1) Building waterproofing project: It is a sub-project to ensure that the structure of a building (structure) is not invaded by water and the internal space is not harmed by water.

[0021] (2) The directional words such as “upper”, “lower”, “left”, “right”, “front”, “back”, “top” and “bottom” mentioned in the present invention are all Figure 2 , Figure 3 The defined direction is used as the reference.

[0022] like Figure 1 , Figure 2 , Figure 3 , Fig.23 As shown, the paint spraying device for building waterproof engineering provided by the present invention includes a material box 1 for placing paint, at least one stirring unit 2 for stirring the paint in the material box 1, an air compression unit 3 for compressing air and the number of which is the same as that of the stirring unit 2, a motor drive assembly 5 capable of driving the stirring unit 2 and the air compression unit 3 to work simultaneously through a transmission structure 4, and an air spray gun 6. The material box 1 has a feed port 102, the bottom of which is an inclined plate inclined from top to bottom for easy material discharge, and at least four universal wheels 101 are installed at the bottom of the material box 1 to facilitate the movement of the device. A spray gun placement rack 603 for placing the air spray gun 6 is installed on the top of the right side wall of the transmission structure mounting rack 401. The air spray gun 6 includes a paint interface 601 and a compressed air interface 602, the paint interface 601 is connected to the material box 1 through a paint pipeline 7, and the compressed air interface 602 is connected to the compressed air outlet of the air compression unit 3 through a compressed air delivery assembly 8.

[0023] like Fig.18 , Fig.19 , Fig. 20 , Fig.21 , Fig. 22As shown, a transmission structure mounting frame 401 is installed on the top of the material box 1, and the motor drive assembly 5 includes a motor 501 and a driven shaft 502 coaxially connected to the output shaft of the motor 501. The motor 501 is installed at the bottom of the right side wall of the transmission structure mounting frame 401, and the output shaft of the motor 501 passes through the right side wall. The transmission structure 4 includes a first bevel gear 402 fixedly installed on the driven shaft 502, a mounting shaft 406 parallel to the driven shaft 502, and a large bevel gear 407 fixedly installed on the mounting shaft 406. The driven shaft 502 is rotatably mounted between the left side wall and the right side wall of the transmission structure mounting frame 401, and a driven shaft protection shell 503 for protecting the driven shaft 502 is arranged between the left side wall and the right side wall, and the cross section of the driven shaft protection shell 503 is U-shaped. A rotating shaft 403 with a center line perpendicular to the driven shaft 502 is arranged next to the rotating shaft 403. The rotating shaft 403 is rotatably mounted on the front side wall of the transmission structure mounting frame 401 through a bearing seat. A second bevel gear 404 meshing with the first bevel gear 402 is fixedly mounted on one end of the rotating shaft 403 close to the driven shaft 502, and a third bevel gear 405 meshing with the large bevel gear 407 is fixedly mounted on one end of the rotating shaft 403 away from the driven shaft 502; the second bevel gear 404 is located on the front side of the front side wall, and the third bevel gear 405 is located on the rear side of the front side wall. The transmission structure mounting frame 401 is provided with a plurality of vertical partitions at equal intervals, and the number of the vertical partitions is one less than the number of the stirring units 2, that is, when there is one stirring unit 2, there is no vertical partition inside the transmission structure mounting frame 401; when there are two stirring units 2, there is one vertical partition inside the transmission structure mounting frame 401; when there are four stirring units 2, there are three vertical partitions inside the transmission structure mounting frame 401. The mounting shaft 406 is rotatably mounted on the right side wall or the vertical partition of the transmission structure mounting frame 401 through a bearing seat. The large bevel gears 407 are all mounted on the left end of the mounting shaft 406, located on the right side wall or the left side of the vertical partition of the transmission structure mounting frame 401. The mounting pin 408 is vertically mounted on the left side surface of the large bevel gear 407, and the top of the stirring connecting rod 201 in the stirring unit 2 and the connecting rod 409 are rotatably mounted on the mounting pin 408, and the end of the connecting rod 409 away from the mounting pin 408 is rotatably connected to the bottom of the connecting block 304 in the air compression unit 3.

[0024] like Figure 4 , Figure 5 , Figure 6As shown, the stirring unit 2 is mounted on the stirring unit mounting frame 203, and the stirring unit 2 includes a stirring connecting rod 201 that is transmission-connected to the driven shaft 502 of the motor drive assembly 5 through the transmission structure 4, and a porous plate 202 that is fixedly mounted at the bottom of the stirring connecting rod 201. The bottom of the stirring unit mounting frame 203 is a circular arch structure that matches the shape of the large bevel gear 407, and a through groove for the stirring connecting rod 201 to move forward and backward is provided at the bottom of the stirring unit mounting frame 203. A strip hole is provided on the stirring connecting rod 201, and a limit rod 204 is slidably installed in the strip hole. The limit rod 204 is fixedly mounted at the bottom of the stirring unit mounting frame 203 through a set of limit rod fixing frames, and a set of limit rod fixing frames are respectively located on the left and right sides of the through groove.

[0025] like Figure 3 , Figure 4 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 As shown, a compression housing 309 and a connecting block sliding track 3010 are fixedly installed on the top of the stirring unit mounting frame 203 from front to back. The air compression unit 3 includes a compression chamber 301 and a piston 302 that can slide back and forth in the compression chamber 301. The compression chamber 301 is located in the compression housing 309, and an exhaust port 307 is provided on the rear side of the side wall of the compression housing 309. A push rod 303 is vertically installed on the rear side of the piston 302, and the rear end of the push rod 303 is fixedly connected to the front side of the connecting block 304 that can slide back and forth. A guide rod 3011 for stabilizing the sliding stroke of the connecting block 304 is fixedly installed in the connecting block sliding track 3010, and a hole for the guide rod 3011 to pass through is provided on the connecting block 304, and a round arch protective cover is provided on the top of the connecting block sliding track 3010. A rear sealing plate 308B is installed on the rear side of the compression chamber 301, and a push rod passing hole for the push rod 303 to pass through is provided on the rear sealing plate 308B.

[0026] like Figure 3 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 , Fig.14 , Fig.15As shown, a trigger valve 11 which can be closed or opened as the air compression unit 3 inhales or exhausts air is provided at the compressed air outlet of the air compression unit 3. The trigger valve 11 includes a linkage rod 1105 which can slide forward and backward as the connecting block 304 slides forward and backward, and a protrusion 1106 is installed at the front end of the linkage rod 1105. The protrusion 1106 is slidably installed in a protrusion sliding frame 1108, and the protrusion sliding frame 1108 is installed at the bottom of the compression housing 309. The linkage rod 1105 is located at the bottom of the compression housing 309. A circular plate is fixedly installed outside the linkage rod 1105, and a fourth return spring 1107 is installed between the front side surface of the circular plate and the rear side surface of the protrusion sliding frame 1108. A front sealing plate 308A is installed on the front side of the compression chamber 301. When there are multiple air compression units 3, each front sealing plate 308A is fixedly connected by a reinforcing plate 3012. An air inlet 306 is provided on the upper side of the front sealing plate 308A, and a groove for the sliding of the baffle plate 1101 is provided in the front sealing plate 308A, and the groove is located below the air inlet 306. A compressed air outlet passing through the groove is provided on the front sealing plate 308A, and the compressed air outlet includes a circular front compressed air outlet 305A provided on the front side surface of the groove and a rectangular rear compressed air outlet 305B provided on the rear side surface of the groove. The trigger valve 11 includes a baffle plate 1101 that can close or open the compressed air outlet by sliding up and down in the groove of the front sealing plate 308A. The baffle plate 1101 is provided with a passage 1102 for passing compressed air. The shape and size of the passage 1102 are consistent with the rear compressed air outlet 305B. A first horizontal plate is vertically installed on the front side surface of the baffle plate 1101, and a second horizontal plate is vertically installed on the bottom of the front side surface of the front sealing plate 308A. The first horizontal plate is located above the second horizontal plate, and a second return spring is installed between the first horizontal plate and the second horizontal plate. A set of horizontally arranged parallel rods 1103 are fixedly installed at the bottom of the shielding plate 1101. A guide roller 1104 is rotatably installed between the parallel rods 1103, which can drive the shielding plate 1101 to slide up and down as the protrusion 1106 slides forward and backward. The front side surface of the protrusion 1106 includes a vertical surface and an inclined surface from top to bottom. The inclined surface is inclined from front to back and from top to bottom. The guide roller 1104 slides from top to bottom along the inclined surface of the protrusion 1106 as the protrusion 1106 slides from back to front, thereby driving the shielding plate 1101 to slide downward. When the center points of the through port 1102, the front compressed air outlet 305A and the rear compressed air outlet 305B are aligned, the compressed air can flow out from the compression chamber 301 through the rear compressed air outlet 305B, the through port 1102, and the front compressed air outlet 305A. The compressed air delivery assembly 8 includes a pipe joint 801 installed on the front side of the front sealing plate 308A and connected to the front compressed air outlet 305A. The pipe joint 801 is connected to the compressed air interface 602 of the air spray gun 6 through an air pipe 802.When the shielding plate 1101 blocks the front compressed air outlet 305A and the rear compressed air outlet 305B, the compressed air outlet can be blocked, and the compressed air can stop flowing into the pipe joint 801.

[0027] like Figure 3 , Fig.12 , Fig.13 , Fig.16 , Fig.17 As shown, the air compression unit 3 also includes a one-way valve 13 arranged at the air inlet 306 and capable of closing or opening as the piston 302 slides back and forth. The one-way valve 13 includes a hollow cylinder 1301 vertically installed on the front sealing plate 308A, a cylindrical cover 1303 installed on the front side of the hollow cylinder 1301, and a perforated plate 1302 capable of sliding in the hollow cylinder 1301. A third return spring 1304 is arranged between the rear side of the perforated plate 1302 and the front side of the front sealing plate 308A. An air inlet is opened at the center of the cylindrical cover 1303, and a block capable of blocking the air inlet is installed at the center of the front side surface of the perforated plate 1302.

[0028] like Figure 2 , Fig.24 As shown, an exhaust structure 9 for exhausting air in the paint pipeline 7 and a pressure regulating structure 10 for regulating the pressure of the paint in the paint pipeline 7 are sequentially arranged outside the paint pipeline 7 from one end close to the material box 1 to one end close to the paint interface 601. The paint pipeline 7 includes a hose portion, and the exhaust structure 9 is arranged outside the hose portion.

[0029] like Fig.24 , Fig.25 , Fig.26 As shown, the exhaust structure 9 includes a pipe placement rack 901 for placing the paint pipe 7 and an extrusion assembly 902 for extruding and discharging the air in the paint pipe 7 in the pipe placement rack 901. The pipe placement rack 901 is a hollow cylindrical structure with openings on both sides. A groove 9011 for placing the hose part of the paint pipe 7 is provided on the inner wall of the pipe placement rack 901. The extrusion assembly 902 includes a herringbone bracket 9021. The three vertical ends of the herringbone bracket 9021 are all equipped with extrusion rollers 9022 for extruding the hose part. At least one water drop-shaped protrusion 9012 is provided in the groove 9011. The extrusion assembly 902 in the exhaust structure 9 is connected to the driven shaft 502 in the motor drive assembly 5 through the belt assembly 12. The belt assembly 12 includes a first pulley 1201 fixedly mounted on the left end of the driven shaft 502. The first pulley 1201 is connected to the second pulley 1203 rotatably mounted on the left side wall of the transmission structure mounting frame 401 through the belt 1202. The center of the herringbone bracket 9021 is fixedly connected to the left end of the belt shaft of the second pulley 1203.

[0030] like Fig.24 , Fig. 27 , Fig.28 , Fig.29 , Fig.30 As shown, the pressure regulating structure 10 includes a pressure regulating shell 1001, and a through cavity 1002 and a pressure relief cavity 1003 are respectively provided inside the pressure regulating shell 1001, and the through cavity 1002 and the pressure relief cavity 1003 are connected through at least two pressure relief holes 1004; a relative paint inlet 1005 and a material outlet 1006 are provided on the inner wall of the through cavity 1002, and the center lines of the paint inlet 1005 and the material outlet 1006 are perpendicular to the center line of the pressure relief hole 1004; a baffle 1007 capable of sliding in the through cavity 1002 is provided in the through cavity 1002, and a vertical rod is vertically installed on the top of the baffle 1007, and a first return spring 1008 is provided between the top of the baffle 1007 and the inner top of the through cavity 1002, and the first return spring 1008 is sleeved outside the vertical rod. The pressure relief chamber 1003 is provided with a pressure control member capable of controlling the pressure of the paint in the chamber 1002, and the bottom of the pressure relief chamber 1003 is connected to the material box 1 through a return pipe 1011. The pressure control member includes a plunger 1009 capable of sliding along the center line direction of the pressure relief chamber 1003 to block the pressure relief hole 1004, and a screw 1010 is vertically installed on the top of the plunger 1009, and the screw 1010 is threadedly connected to the pressure regulating housing 1001.

[0031] The working principle of the present invention is as follows: pour the paint into the material box 1 from the feed port 102, start the motor 501, the output shaft of the motor 501 starts to drive the driven shaft 502 to rotate, the driven shaft 502 drives the four first bevel gears 402 installed on the driven shaft 502 to start rotating, the four first bevel gears 402 respectively drive the four second bevel gears 404 to start rotating, the four second bevel gears 404 respectively drive the four rotating shafts 403 to rotate, the four rotating shafts 403 respectively drive the four third bevel gears 405 to rotate, the four third bevel gears 405 respectively drive the four large bevel gears 407 to start rotating, the installation pin 408 installed on the large bevel gear 407 rotates with the rotation of the large bevel gear 407, the installation pin 408 drives the connecting rod 409 to rotate, and the paint circuit and the air circuit start working at the same time.

[0032] The specific working steps of the air circuit are as follows: when compressing air, the connecting rod 409 rotates to drive the connecting block 304 to slide forward along the guide rod 3011 in the connecting block sliding track 3010, and the connecting block 304 drives the piston 302 to slide forward in the compression chamber 301 through the push rod 303. The third return spring 1304 is in a naturally extended state, and the block on the perforated plate 1302 blocks the air inlet on the cylindrical cover 1303. The air in the compression chamber 301 is continuously compressed and pressurized. When the connecting block 304 slides forward until it contacts the linkage rod 1105, it drives the linkage rod 1105 to slide forward, and the linkage rod 1105 drives the protrusion 1106 to slide in the protrusion sliding frame 1108. The fourth return spring 1304 is in a naturally extended state. The block on the perforated plate 1302 blocks the air inlet on the cylindrical cover 1303. The air in the compression chamber 301 is continuously compressed and pressurized. The positioning spring 1107 is stretched, and the protrusion 1106 slides forward, driving the guide roller 1104 to slide downward along the inclined surface of the protrusion 1106. The second return spring between the first horizontal plate and the second horizontal plate is in a compressed state, thereby driving the baffle plate 1101 to slide downward in the front sealing plate 308A, and aligning the center point of the through port 1102 with the center points of the front compressed air outlet 305A and the rear compressed air outlet 305B. The compressed air flows into the pipe joint 801 through the rear compressed air outlet 305B, through the through port 1102, and the front compressed air outlet 305A, and then flows from the pipe joint 801 through the air pipe 802 and the compressed air interface 602 into the air spray gun 6.

[0033] When air is inhaled, the connecting rod 409 rotates to drive the connecting block 304 to slide backwards, and the connecting block 304 drives the piston 302 to slide backwards in the compression chamber 301 through the push rod 303. The perforated plate 1302 slides backwards under the action of the suction force generated in the compression chamber 301, and the third return spring 1304 is in a compressed state. The block on the perforated plate 1302 is separated from the air inlet on the cylindrical cover 1303. The air enters from the air inlet and enters the compression chamber 301 through the hole on the perforated plate 1302. The air behind the piston 302 is discharged from the exhaust port 307. When the connecting block 304 When sliding backward, the fourth return spring 1107 gradually returns to the natural extension state, the linkage rod 1105 and the protrusion 1106 both slide backward, and the second return spring between the first horizontal plate and the second horizontal plate gradually returns to the natural extension state, driving the baffle plate 1101 to slide upward in the front sealing plate 308A, and the center point of the through port 1102 is no longer aligned with the center points of the front compressed air outlet 305A and the rear compressed air outlet 305B. The baffle plate 1101 blocks the front compressed air outlet 305A and the rear compressed air outlet 305B, and the compression chamber 301 is filled with air.

[0034] The specific working steps of the paint circuit are: the four mounting pins 408 respectively drive the four stirring rods 201 and the porous plate 202 to rotate, and the inclination angles of the four stirring rods 201 differ by 60° respectively, so that the paint of different depths in the material box 1 can be stirred, and the paint will flow through the gaps on the porous plate 202, be broken up and stirred evenly again.

[0035] The driven shaft 502 drives the first pulley 1201 to rotate, and the first pulley 1201 drives the second pulley 1203 to rotate through the belt 1202, and the second pulley 1203 drives the belt shaft of the second pulley 1203 to rotate, and the belt shaft drives the herringbone bracket 9021 to rotate, and the herringbone bracket 9021 drives the extrusion roller 9022 to rotate along the groove 9011 in the placement rack 901 to squeeze the hose part of the paint pipeline 7, and through the cooperation of the teardrop-shaped protrusion 9012, the paint pipeline 7 is better squeezed, and the air in the paint pipeline 7 is discharged to form a negative pressure state, so the stirred paint is sucked into the paint pipeline 7 from the material box 1, and after being squeezed and pressurized by the exhaust structure 9, it enters the through cavity 1002 of the pressure regulating structure 10 from the paint inlet 1005, and under pressure, the baffle 1007 will slide upward, the first return spring 1008 is in a compressed state, and the vertical rod plays a guiding role for the first return spring 1008. Part of the paint will flow out from the discharge port 1006, along the paint pipe 7, from the paint interface 601 into the air spray gun 6. Part of the paint will flow into the pressure relief chamber 1003 through the five pressure relief holes 1004, and flow back to the material box 1 along the return pipe 1011. The staff can turn the screw 1010 according to the spraying requirements to drive the plunger 1009 to slide and block the five pressure relief holes 1004 respectively. If a higher paint pressure is required, more pressure relief holes 1004 will be blocked. After the plunger 1009 blocks the pressure relief hole 1004 to be blocked, the screw 1010 is no longer turned, and the plunger 1009 stays at this position.

[0036] When there is paint and compressed air in the air spray gun 6 , the trigger of the air spray gun 6 is pressed, and the paint atomized by the air spray gun 6 is sprayed out from the nozzle of the air spray gun 6 .

[0037] It should be noted that the present invention is not limited to the specific structures shown in the drawings in the above-mentioned embodiments, and various changes can be made thereto within the knowledge scope of ordinary technicians in this field.

[0038] The above are only embodiments provided for the present application and are not intended to limit the present application. Although the present application is described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A coating spraying device for building waterproof engineering, characterized in that: It comprises a material box (1) for placing paint, at least one stirring unit (2) for stirring the paint in the material box (1), air compression units (3) for compressing air and the same number as the stirring units (2), a motor drive assembly (5) capable of driving the stirring unit (2) and the air compression unit (3) to work simultaneously through a transmission structure (4), and an air spray gun (6); The material box (1) has a material inlet (102); The air spray gun (6) comprises a paint interface (601) and a compressed air interface (602), wherein the paint interface (601) is connected to the material box (1) via a paint pipeline (7), and the compressed air interface (602) is connected to the compressed air outlet of the air compression unit (3) via a compressed air delivery component (8); An exhaust structure (9) for exhausting air from the paint pipeline (7) and a pressure regulating structure (10) for regulating the pressure of the paint in the paint pipeline (7) are sequentially arranged outside the paint pipeline (7) from one end close to the material box (1) to one end close to the paint interface (601); The paint pipeline (7) comprises a hose portion, the exhaust structure (9) is arranged outside the hose portion, and the exhaust structure (9) is drivingly connected to the motor drive assembly (5); A trigger valve (11) is provided at the compressed air outlet of the air compression unit (3), which valve can be closed or opened as the air compression unit (3) inhales or exhausts air.

2. A coating spraying device for building waterproof engineering according to claim 1, characterized in that: At least four universal wheels (101) are installed at the bottom of the material box (1).

3. A coating spraying device for building waterproof engineering according to claim 1, characterized in that: The stirring unit (2) comprises a stirring connecting rod (201) which is transmission-connected to a motor drive assembly (5) via a transmission structure (4), and a porous plate (202) fixedly mounted on the bottom of the stirring connecting rod (201).

4. A coating spraying device for building waterproof engineering according to any one of claims 1 to 3, characterized in that: The air compression unit (3) comprises a compression chamber (301) and a piston (302) capable of sliding in the compression chamber (301); a front sealing plate (308A) is installed on the front side of the compression chamber (301); and a compressed air outlet and an air inlet (306) are respectively provided on the front sealing plate (308A); The air compression unit (3) further comprises a one-way valve (13) arranged at the air inlet (306) and capable of opening or closing as the piston (302) slides; A push rod (303) is vertically mounted on the rear side of the piston (302); the rear end of the push rod (303) is fixedly connected to the front side of a connecting block (304) that can slide forward and backward; and the connecting block (304) is connected to the transmission structure (4).

5. A coating spraying device for building waterproofing engineering according to claim 4, characterized in that: The trigger valve (11) comprises a linkage rod (1105) that can slide forward and backward along with the sliding of the connection block (304), and a protrusion (1106) is installed at the front end of the linkage rod (1105); The trigger valve (11) comprises a shielding plate (1101) that can close or open the compressed air outlet by sliding up and down in the front sealing plate (308A); the shielding plate (1101) is provided with a through hole (1102) for passing compressed air; A group of horizontally arranged parallel rods (1103) are fixedly mounted at the bottom of the shielding plate (1101), and guide rollers (1104) are rotatably mounted between the parallel rods (1103) and are capable of sliding forward and backward along with the protrusions (1106) to drive the shielding plate (1101) to slide up and down.

6. A coating spraying device for building waterproof engineering according to any one of claims 1 to 3, characterized in that: The motor drive assembly (5) comprises a motor (501) and a driven shaft (502) coaxially connected to an output shaft of the motor (501); The transmission structure (4) comprises a first bevel gear (402) fixedly mounted on a driven shaft (502), a mounting shaft (406) parallel to the driven shaft (502), and a large bevel gear (407) fixedly mounted on the mounting shaft (406); A rotating shaft (403) whose center line is perpendicular to the driven shaft (502) is arranged next to the driven shaft (502); a second bevel gear (404) meshing with the first bevel gear (402) is fixedly mounted on one end of the rotating shaft (403) close to the driven shaft (502); and a third bevel gear (405) meshing with the large bevel gear (407) is fixedly mounted on one end of the rotating shaft (403) away from the driven shaft (502); A mounting pin (408) is vertically mounted on the large bevel gear (407), and a stirring unit (2) and a connecting rod (409) are rotatably mounted on the mounting pin (408), wherein one end of the connecting rod (409) away from the mounting pin (408) is connected to the air compression unit (3).

7. A coating spraying device for building waterproof engineering according to any one of claims 1 to 3, characterized in that: The exhaust structure (9) comprises a pipe placement rack (901) for placing the paint pipe (7) and an extrusion assembly (902) for extruding and discharging air in the paint pipe (7) in the pipe placement rack (901), wherein the extrusion assembly (902) is connected to the motor drive assembly (5) via a belt assembly (12); The pipe placement rack (901) is a hollow cylindrical structure with openings on both sides, and a groove (9011) for placing the hose portion of the paint pipe (7) is provided on the inner wall of the pipe placement rack (901); The extrusion assembly (902) comprises a herringbone-shaped bracket (9021), and three vertical ends of the herringbone-shaped bracket (9021) are each equipped with an extrusion roller (9022) for extruding the hose portion.

8. A coating spraying device for building waterproofing engineering according to claim 7, characterized in that: At least one water drop-shaped protrusion (9012) is arranged in the groove (9011).

9. A coating spraying device for building waterproof engineering according to any one of claims 1 to 3, characterized in that: The pressure regulating structure (10) comprises a pressure regulating housing (1001), wherein a through cavity (1002) and a pressure relief cavity (1003) are respectively provided inside the pressure regulating housing (1001), and the through cavity (1002) and the pressure relief cavity (1003) are connected via at least two pressure relief holes (1004); The inner wall of the through cavity (1002) is provided with a coating material inlet (1005) and a material outlet (1006) opposite to each other, and the center lines of the coating material inlet (1005) and the material outlet (1006) are both perpendicular to the center line of the pressure relief hole (1004); The through cavity (1002) is provided with a baffle (1007) capable of sliding in the through cavity (1002), and a first return spring (1008) is provided between the top of the baffle (1007) and the inner top of the through cavity (1002); The pressure relief chamber (1003) is provided with a pressure control member capable of controlling the pressure of the paint passing through the chamber (1002), and the bottom of the pressure relief chamber (1003) is connected to the material box (1) via a return pipe (1011).

10. A coating spraying device for building waterproofing engineering according to claim 9, characterized in that: The pressure control component comprises a plunger (1009) that can slide along the center line direction of the pressure relief chamber (1003) to block the pressure relief hole (1004), and a screw rod (1010) is vertically installed on the top of the plunger (1009), and the screw rod (1010) is threadedly connected to the pressure regulating housing (1001).

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