Polyurethane spraying machine capable of controlling spraying thickness

Abstract

The invention discloses a polyurethane spraying machine capable of controlling the spraying thickness, and relates to the technical field of spraying equipment.The polyurethane spraying machine capable of controlling the spraying thickness comprises a machine box, a feeding system, a mixing system, an air compressor and a spraying system.The feeding system, the mixing system and the air compressor are installed on the end face of the bottom of the machine box; the feeding system is connected with the mixing system through a pipeline, the mixing system is connected with the air compressor through a pipeline, the air compressor is connected with the spraying system through a pipeline, a laser range finder is installed on the spraying system and used for measuring the thickness of sprayed polyurethane, and a control screen is installed on the upper end face of the machine box. And the control screen is used for displaying the thickness of the polyurethane. According to the polyurethane spraying machine capable of controlling the spraying thickness, the stirring efficiency is improved through the unique structure in the mixing box, and the spraying thickness of polyurethane can be controlled by an operator through the laser range finder.

Description

Technical Field

[0001] The invention relates to the technical field of spraying equipment, in particular to a polyurethane spraying machine for controlling spraying thickness. Background Art

[0002] Polyurethane spraying is a high-pressure polyurethane spraying equipment. Because the materials of the high-pressure spraying equipment collide and rotate violently at high speed in a small mixing chamber, the mixing is very thorough. The high-speed moving materials form fine mist droplets at the spray gun mouth and are evenly sprayed onto the surface of the object. Polyurethane spraying is mainly used for insulation and sealing in insulation and refrigeration. For insulation materials that are not easy to use molds, such as large spherical storage tanks, large-diameter special-shaped pipes, cold storage walls, etc., on-site foaming can be achieved.

[0003] The prior art CN215465343U discloses a polyurethane sprayer, and the technical scheme discloses that "the utility model relates to the technical field of polyurethane spraying, specifically a polyurethane sprayer, comprising a bracket, two movable components and a back plate, the two movable components are both located below the bracket, the back plate is located inside the bracket, heating blocks are installed at both ends of the back plate away from the movable components, the spraying material can be heated by the heating blocks, the spraying temperature of the spraying material can be controlled, the spraying material is sprayed at the most suitable temperature, the adhesion of the spraying material is increased, and the spraying quality of the spraying material is ensured, a protective cover 1 is installed on the side of the back plate close to the heating block, by setting the protective cover 1, the heating block and the high-voltage control element can be placed inside the protective cover 1, so that the heating block and the high-voltage control element will not be exposed outside the polyurethane sprayer, avoiding the operator from accidentally touching the operator during operation and causing injury to the operator, thereby ensuring the personal safety of the operator".

[0004] Although the prior art has disclosed a polyurethane sprayer, there are still some shortcomings. Specifically, during the process of mixing the materials in the mixing box, there will be uneven mixing and the materials cannot be completely mixed. During the stirring process, the polyurethane sprayer lacks a heating device and the stirring efficiency is slow. In addition, during the polyurethane spraying process, since manual operation cannot control the spraying accuracy, the spraying thickness will be uneven, which is not conducive to normal use. Summary of the invention

[0005] The object of the present invention is to provide a polyurethane spraying machine with controlled thickness to solve the problems raised in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: the polyurethane spraying machine for controlling the spraying thickness comprises a chassis, a feeding system, a mixing system, an air compressor, and a spraying system, wherein the feeding system, the mixing system, and the air compressor are installed on the end surface of the bottom of the chassis, the feeding system is connected to the mixing system through a pipeline, the mixing system is connected to the air compressor through a pipeline, the air compressor is connected to the spraying system through a pipeline, a laser rangefinder is installed on the spraying system, and the laser rangefinder is used to measure the thickness of the sprayed polyurethane, and a control screen is installed on the upper end surface of the chassis. The feeding system transports the stored combined polyether and isocyanate into the mixing system, and then the materials are fully mixed through the mixing system, the air compressor pressurizes the fully mixed materials, and transports them into the spray gun through a hose, and the control screen can display the thickness of the sprayed polyurethane layer.

[0007] The rear end face of the chassis is equipped with an armrest, two rollers are installed at both ends of the bottom of the chassis, a box cover is installed on the upper end face of the chassis, two handles are installed on the box cover, and two support pads are installed on the bottom end face of the chassis. The rollers can make the entire polyurethane sprayer move, improving the flexibility of the entire system. The box cover is used to close and protect the components inside the box, and the armrests are convenient for operators to open the box cover and add materials.

[0008] The spraying system includes a spray gun, a hose is installed on the front end surface of the chassis, the top of the hose is connected to the spray gun, and a laser rangefinder is installed on the spray gun. The feeding system includes a feed box 1, a feed box 2, a feed pump 1 and a feed pump 2. The feed box 1 and the feed box 2 are installed on the bottom end surface of the chassis, the feed box 1 is installed inside the feed pump 1, the feed box 2 is installed inside the feed pump 2, the feed pump 1 is installed with a pipe 1, the feed pump 2 is installed with a pipe 2, the feed box 1 contains a composite polyether, the feed box 2 contains isocyanate, the pipe 1 is installed with a valve 1, and the pipe 2 is installed with a valve 2. The spray gun is used for spraying the mixed and pressurized materials, and is also used to install a laser rangefinder so that the spray gun can measure the distance of the polyurethane layer in real time during operation. The spraying system adopts a double feed box design. Feed box one and feed box two are respectively used to hold the combined polyether and isocyanate materials. These two materials need to be mixed in a certain proportion during the spraying process. Feed pump one and feed pump two transport the materials to the mixing system through the connected pipes one and two. Valves one and valve two are respectively installed on pipe one and pipe two, which can adjust the flow and proportion of the materials according to actual needs.

[0009] The pipe 1 and the pipe 2 are joined at one end to enter the pipe 3, a protrusion is provided inside one end of the pipe 3, a spiral plate is provided inside the pipe 3, and the pipe 3 is connected to the mixing system. Before the mixing system, the materials in the pipe 1 and the pipe 2 are first joined to enter the pipe 3, a protrusion is provided inside one end of the pipe 3, and the protrusion is used to fix the spiral plate therein, and the spiral plate makes the two materials in the pipe 3 mixed preliminarily before entering the mixing system.

[0010] The mixing system includes a motor, a mixing box, a driving gear, a driven gear, a baffle, a reciprocating screw, a slider, a guide rail, a stirring plate, a heating block and a stirring blade. The upper end surface of the mixing box is equipped with a motor, the upper end of the motor output shaft is equipped with a driving gear, two driven gears are installed on both sides of the driving gear through gear meshing connection, the driven gear is installed on the reciprocating screw, a baffle is installed below the driving gear, guide rails are installed on both sides of the mixing box, a slider is provided on the reciprocating screw, the slider is slidably connected to the guide rail, a stirring plate is installed on the slider, a heating block is installed inside the slider, and two stirring blades are installed on the stirring shaft on the main shaft of the motor. The motor drives the driving gear to rotate, and the driven gear is installed on the reciprocating screw and rotates with the rotation of the driving gear, thereby driving the movement of the reciprocating screw. The baffle can effectively prevent the material from splashing out of the mixing box during the mixing process and protect the driving gear and the driven gear. The guide rail enables the slider to slide smoothly. The slider slides up and down with the reciprocating motion of the screw. The stirring plate installed on the slider continuously stirs the material as the slider slides, so that the material is fully mixed and evenly distributed in the mixing box. The two stirring blades rotate driven by the main shaft of the motor, further enhancing the mixing effect of the material.

[0011] The slider and the stirring plate are provided with a plurality of groups of "X"-shaped through grooves. A pipe four is installed at one end of the stirring box, a valve three is installed on the pipe four, a hose pump is connected in series on the pipe four, and the other end of the pipe four is connected to an air compressor (34). The control system is connected to the motor, the laser rangefinder and the control screen through electric wires. When the stirrer is started, these "X"-shaped through grooves guide the material to be stirred in the stirring box, and also increase the contact area between the material and the slider and the stirring plate, thereby accelerating the mixing rate. The air compressor pressurizes the polyurethane that has been fully stirred and then transports it into the hose. The laser rangefinder can monitor the thickness of the sprayed polyurethane in real time and feed back this information to the control system. The control system adjusts the speed of the motor, the switch of the valve and the output pressure of the air compressor according to this information. The operator can monitor and control the entire stirring process through the buttons on the screen, thereby improving the work efficiency and the convenience of operation and making the entire stirring process safer and more reliable.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The polyurethane sprayer is designed to have a unique spiral plate in pipe 3. The spiral plate allows the materials in pipes 1 and 2 to be mixed before entering the mixing box, which can effectively speed up the mixing efficiency of the materials. The slider and the stirring plate on the reciprocating screw move up and down driven by the motor, and the slider and the stirring plate move up and down to stir the materials. In addition, an "X"-shaped through groove is opened on the slider and the stirring plate, which can reduce the resistance of the slider and the stirring plate when they move up and down, and speed up the mixing efficiency.

[0014] 2. A heating block is arranged on the slider. After power is turned on, the heating block first heats the slider and the stirring plate, and the material in the "X"-shaped groove is heated, thereby improving the heating efficiency of the material.

[0015] 3. A laser rangefinder is installed on the spray gun. The laser rangefinder can measure the thickness of the sprayed polyurethane layer and transmit the signal to the control screen through the control system to display the thickness of the polyurethane layer. The operator then adjusts the spraying position according to the displayed thickness to make the sprayed polyurethane layer smooth and flat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A perspective view of the present invention;

[0017] Figure 2 The left side cross-sectional structure of the present invention is Figure 1 ;

[0018] Figure 3 The left side cross-sectional structure of the present invention is Figure 2 ;

[0019] Figure 4 It is a three-dimensional diagram of the material box and the mixing box of the present invention;

[0020] Figure 5 is a cross-sectional view of the pipeline structure of the present invention;

[0021] Figure 6 It is a cross-sectional view of the slider and stirring plate structure of the present invention;

[0022] Figure 7 It is a three-dimensional diagram of the stirring system of the present invention.

[0023] In the figure: 1. chassis; 2. box cover; 3. roller; 4. support pad; 5. hose; 6. spray gun; 7. laser rangefinder; 8. handrail; 9. handle; 10. control screen; 11. feed box; 12. feed box two; 13. feed pump one; 14. feed pump two; 15. valve one; 16. valve two; 17. pipeline one; 18. pipeline two; 19. pipeline three; 20. spiral plate; 21. mixing box; 22. motor; 23. driving gear; 24. driven gear; 25. baffle; 26. reciprocating screw; 27. slider; 28. guide rail; 29. ​​mixing plate; 30. heating block; 31. mixing blade; 32. pipeline four; 33. valve three; 34. air compressor. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-Figure 7 The present invention provides a technical solution: a polyurethane sprayer for controlling spraying thickness comprises a chassis 1, a feeding system, a mixing system, an air compressor 34, and a spraying system. The feeding system, the mixing system and the air compressor 34 are installed on the end surface of the bottom of the chassis 1. The feeding system is connected to the mixing system through a pipeline, the mixing system is connected to the air compressor 34 through a pipeline, the air compressor 34 is connected to the spraying system through a pipeline, a laser rangefinder 7 is installed on the spraying system, and the laser rangefinder 7 is used to measure the thickness of the sprayed polyurethane. A control screen 10 is installed on the upper end surface of the chassis 1. The feeding system transports the stored combined polyether and isocyanate into the mixing system, and then the materials are fully mixed through the mixing system. The air compressor 34 pressurizes the fully mixed materials and transports them into the spray gun 6 through the hose 5. The control screen 10 can display the thickness of the sprayed polyurethane layer.

[0026] The rear end face of the chassis 1 is provided with an armrest 8, two rollers 3 are provided at both ends of the bottom of the chassis 1, a cover 2 is provided on the upper end face of the chassis 1, two handles 9 are provided on the cover 2, and two support pads 4 are provided on the bottom end face of the chassis 1. The rollers 3 can move the entire polyurethane sprayer to improve the flexibility of the entire system, the cover 2 is used to close and protect the components inside the chassis, and the armrests are convenient for operators to open the cover 2 and add materials.

[0027] The spraying system includes a spray gun 6, a hose 5 is installed on the front end surface of the chassis 1, the top of the hose 5 is connected to the spray gun 6, and a laser rangefinder 7 is installed on the spray gun 6. The feeding system includes a feed box 11, a feed box 2 12, a feed pump 13 and a feed pump 2 14. The feed box 11 and the feed box 2 12 are installed on the bottom end surface of the chassis 1. The feed box 11 is equipped with a feed pump 13, and the feed box 2 12 is equipped with a feed pump 2 14. The feed box 11 contains a composite polyether, and the feed box 2 12 contains isocyanate. The feed pump 1 13 is installed with a pipe 17, and the feed pump 2 14 is installed with a pipe 2 18. The pipe 17 is equipped with a valve 15, and the pipe 2 18 is equipped with a valve 2 16. The spray gun 6 is used for spraying the mixed and pressurized materials, and is also used for installing the laser rangefinder 7, so that the spray gun 6 can measure the distance of the polyurethane layer in real time during the operation. The spraying system adopts a double feed box design. Feed box 1 11 and feed box 2 12 are respectively used to hold the two materials of combined polyether and isocyanate. These two materials need to be mixed in a certain proportion during the spraying process. Feed pump 1 13 and feed pump 2 14 transport the materials to the mixing system through the connected pipe 1 17 and pipe 2 18. Valve 15 and valve 2 16 are respectively installed on pipe 1 17 and pipe 2 18, which can adjust the flow and proportion of the materials according to actual needs.

[0028] One end of pipeline 17 and pipeline 2 18 merge into pipeline 3 19, one end of pipeline 3 19 is provided with a protrusion, and a spiral plate 20 is provided inside pipeline 3 19. Pipeline 3 19 is connected to a mixing system. Before the mixing system, the materials in pipeline 1 17 and pipeline 2 18 first merge into pipeline 3 19, one end of pipeline 3 19 is provided with a protrusion, and the protrusion is used to fix the spiral plate 20 therein. The spiral plate 20 makes the two materials in pipeline 3 19 mixed preliminarily before entering the mixing system.

[0029] The mixing system includes a motor 22, a mixing box 21, a driving gear 23, a driven gear 24, a baffle 25, a reciprocating screw 26, a slider 27, a guide rail 28, a stirring plate 29, a heating block 30 and a stirring blade 31. The motor 22 is installed on the upper end surface of the mixing box 21, the driving gear 23 is installed on the upper end of the output shaft of the motor 22, two driven gears 24 are installed on both sides of the driving gear 23 through gear meshing connection, the driven gear 24 is installed on the reciprocating screw 26, a baffle 25 is installed below the driving gear 23, guide rails 28 are installed on both sides of the mixing box 21, a slider 27 is provided on the reciprocating screw 26, the slider 27 is slidably connected to the guide rail 28, a stirring plate 29 is installed on the slider 28, a heating block 30 is installed inside the slider 27, and two stirring blades 31 are installed on the main shaft of the motor 22. The motor 22 drives the driving gear 23 to rotate. The driven gear 24 is installed on the reciprocating screw 26 and rotates with the rotation of the driving gear 23, thereby driving the movement of the reciprocating screw 26. The baffle 25 can effectively prevent the material from splashing out of the mixing box during the mixing process, protecting the driving gear 23 and the driven gear 24. The guide rail enables the slider 27 to slide smoothly. The slider 27 slides up and down with the reciprocating motion of the reciprocating screw 26. The stirring plate 29 installed on the slider 27 continuously stirs the material with the sliding of the slider 27, so that the material is fully mixed and evenly distributed in the mixing box 21. The two stirring blades 31 are driven by the main shaft of the motor 22, and the stirring blades 31 rotate, further enhancing the mixing effect of the material.

[0030] The slider 27 and the stirring plate 29 are provided with a plurality of groups of "X"-shaped through grooves. A pipe 4 32 is installed at one end of the stirring box 21, a valve 33 is installed on the pipe 4 32, a hose pump is connected in series to the pipe 4 32, and the other end of the pipe 4 32 is connected to the air compressor. The laser rangefinder 7 and the motor 22 are connected to the control screen 10 through the control system. When the stirrer is started, these "X"-shaped through grooves guide the material to be stirred in the stirring box 21, so that the contact area between the material and the slider 27 and the stirring plate 29 is increased, thereby accelerating the mixing rate. The air compressor 34 pressurizes the polyurethane that has been completely stirred and then transports it into the hose 5. The laser rangefinder 7 can monitor the thickness of the sprayed polyurethane in real time and feed back this information to the control system. The control system adjusts the speed of the motor 22, the switch of the valve, and the output pressure of the air compressor 34 according to this information. The operator can monitor and control the entire stirring process through the buttons on the control screen 10, which improves the work efficiency and operation convenience and makes the entire stirring process safer and more reliable.

[0031] The working principle of the present invention is as follows: before the polyurethane sprayer is operated, the rollers on both sides of the case 1 are moved by pushing the handrail 8, driving the entire device to move to a suitable position, and then fixed by the support pad 4 at the bottom of the case 1 for convenient spraying. The case cover 2 is opened by the handle on the case cover 2, and the combined polyether and isocyanate are added to the material box 1 11 and the material box 2 12 respectively.

[0032] During the operation of the polyurethane spraying machine, the material pump 1 13 and the material pump 2 14 transport the materials in the feed box 1 11 and the feed box 2 12 into the pipe 1 17 and the pipe 2 18 respectively, and the control system controls the valve 1 15 and the valve 2 16 to open, and the materials in the pipe 1 17 and the pipe 2 18 enter the pipe 3 19. The spiral plate 20 is arranged in the pipe 3 19. After the materials pass through the spiral plate, the spiral plate gives the materials a rotating force, so that the materials are initially mixed and then enter the mixing box 21. At this time, the control system controls the motor 22 to start running, the main shaft of the motor 22 rotates, driving the stirring blade 31 on the main shaft to rotate and stir the materials. The motor 22 drives the driving gear 23 to rotate, and the driving gear 23 is meshed and connected with the driven gear 24, thereby driving the driven gear 24 to rotate, driving the reciprocating screw 26 to move up and down, and the slider 27 on the reciprocating screw 26 is slidably connected with the guide rail 28. The stirring plate 29 installed on the slider 27 continuously stirs the materials as the slider 27 slides, so that the materials are fully mixed in the mixing box 21. The slider 27 and the stirring plate 29 are provided with a plurality of groups of “X” shaped through grooves to reduce the resistance encountered by the slider 27 and the stirring plate 29 when they move up and down. These “X” shaped through grooves guide the materials to be mixed in the stirring box 21. The through grooves increase the contact area between the materials and the slider 27 and the stirring plate 29, thereby accelerating the mixing rate. A heating block 30 is provided in the slider 27. After power is turned on, the heating block 30 first heats the slider 30 and the stirring plate 29, and the materials in the “X” shaped through grooves are also heated, thereby improving the efficiency of material heating.

[0033] Open valve three 33, and the hose pump conveys the stirred polyurethane into the air compressor 34. The air compressor 34 pressurizes the polyurethane and conveys it into the hose 5. Press the switch on the spray gun 6 to spray atomized polyurethane from the muzzle of the spray gun 6. The thickness of the sprayed polyurethane is monitored in real time by the laser rangefinder 7, and the information is fed back to the control system. The control system adjusts the speed of the motor 22, the switch of the valve, and the output pressure of the air compressor 34 according to the information, and displays the thickness of the polyurethane layer on the control screen 10. The operator reads the thickness of the polyurethane layer and adjusts the position of the spray gun 6 so that the polyurethane layer can be sprayed evenly. The operator can monitor and control the entire stirring process through the buttons on the control screen 10, which improves work efficiency and operation convenience and makes the entire stirring process safer and more reliable.

[0034] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A polyurethane spraying machine for controlling spraying thickness, characterized in that: The polyurethane spraying machine for controlling spraying thickness comprises a chassis (1), a feeding system, a mixing system, an air compressor (34), and a spraying system. The feeding system, the mixing system, and the air compressor (34) are mounted on the end surface at the bottom of the chassis (1). The feeding system is connected to the mixing system via a pipeline. The mixing system is connected to the air compressor (34) via a pipeline. The air compressor (34) is connected to the spraying system via a pipeline. A laser rangefinder (7) is mounted on the spraying system. A control screen (10) is mounted on the upper end surface of the chassis (1).

2. A polyurethane spraying machine for controlling spraying thickness according to claim 1, characterized in that: The rear end surface of the chassis (1) is provided with an armrest (8), two rollers (3) are provided at both ends of the bottom of the chassis (1), a box cover (2) is provided on the upper end surface of the chassis (1), two handles (9) are provided on the box cover (2), and two support pads (4) are provided on the bottom end surface of the chassis (1).

3. A polyurethane spraying machine for controlling spraying thickness according to claim 2, characterized in that: The spraying system comprises a spray gun (6), a hose (5) is installed on the front end surface of the chassis (1), the top end of the hose (5) is connected to the spray gun (6), and a laser rangefinder (7) is installed on the spray gun (6).

4. A polyurethane spraying machine for controlling spraying thickness according to claim 3, characterized in that: The feeding system comprises a feed box 1 (11), a feed box 2 (12), a feed pump 1 (13) and a feed pump 2 (14); the feed box 1 (11) and the feed box 2 are mounted on the bottom end surface of the chassis (1); the feed box 1 (11) is internally mounted with a feed pump 1 (13); the feed box 2 (12) is internally mounted with a feed pump 2 (14); the feed pump 1 (13) is installed with a pipe 1 (17); the feed pump 2 (14) is installed with a pipe 2 (18); the pipe 1 (17) and one end of the pipe 2 (18) merge into the pipe 3 (19).

5. A polyurethane spraying machine for controlling spraying thickness according to claim 4, characterized in that: The pipe one (17) is provided with a valve one (15), the pipe two (18) is provided with a valve two (16), one end of the pipe three (19) is provided with a protrusion inside, the protrusion inside the pipe three (19) is provided with a spiral plate (20), and the pipe three (19) is connected to a mixing system.

6. A polyurethane spraying machine for controlling spraying thickness according to claim 5, characterized in that: The mixing system comprises a motor (22), a mixing box (21), a driving gear (23), a driven gear (24), a baffle (25), a reciprocating screw (26), a slider (27), a guide rail (28), a mixing plate (29), a heating block (30) and a mixing blade (31); the pipeline (19) is connected to the mixing box (21); the motor (22) is installed on the upper end surface of the mixing box (21); the driving gear (23) is installed on the upper end of the output shaft of the motor (22); and the driving gear (23) is installed on both sides through gear meshing connection. Two driven gears (24), the driven gears (24) are mounted on a reciprocating screw (26), a baffle (25) is mounted below the driving gear (23), guide rails (28) are mounted on both sides of the interior of the stirring box (21), a slider (27) is arranged on the reciprocating screw (26), the slider (27) is slidably connected to the guide rail (28), a stirring plate (29) is mounted on the slider (27), a heating block (30) is mounted inside the slider (27), and two stirring blades (31) are mounted on the stirring shaft on the main shaft of the motor (22).

7. A polyurethane spraying machine for controlling spraying thickness according to claim 6, characterized in that: The slider (27) and the stirring plate (29) are provided with a plurality of groups of "X"-shaped through grooves.

8. The polyurethane spraying machine for controlling spraying thickness according to claim 7, characterized in that: A pipe four (32) is installed at one end of the mixing box (21), a valve three (33) is installed on the pipe four (32), a hose pump is connected in series to the pipe four (32), the other end of the pipe four (32) is connected to an air compressor (34), and the air compressor (34) is connected to a hose (5).

9. A polyurethane spraying machine for controlling spraying thickness according to claim 8, characterized in that: The control system is connected to the motor (22), the laser rangefinder (7) and the control screen (10) through electric wires.

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