Lost foam coating spraying device

Abstract

The utility model discloses an evanescent mode coating spraying device, which relates to the technical field of evanescent mode spraying and comprises a base, a storage box, a booster pump, a pressure tank and a spray gun pipe, the storage box, the booster pump, the pressure tank and the spray gun pipe are arranged at the upper end of the base, a gear motor is mounted on a top box cover of the storage box, and an output shaft of the gear motor is movably connected with a rotating rod and a stirring paddle. The storage box is communicated with the booster pump through a feeding pipe, a filtering device is arranged at the feeding pipe, the booster pump is communicated with the pressure tank through a conveying pipe, the pressure tank is communicated with the spray gun pipe through a telescopic hose, and the discharging end of the spray gun pipe is in threaded connection with the atomizing nozzle. According to the evanescent mode coating spraying device, the coating can be continuously stirred to prevent precipitation, the sucked-out coating can be filtered, the booster pump is matched with the pressure tank to enable the coating to be pressurized, atomized through the atomizing nozzle and sprayed out, the coating is sprayed more evenly, the effect is better, and the spraying efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lost foam spraying, in particular to a lost foam coating spraying device. Background Art

[0002] Lost foam casting, also known as full mold casting, is a new casting method that uses dry sand without adhesive and vacuum technology to make foam plastic molds. It is a foam model with similar size and shape to the casting that is bonded into a model cluster, brushed with refractory paint and dried, buried in dry quartz sand for vibration molding, and poured under negative pressure to vaporize the model. Liquid metal occupies the position of the model, and forms a casting after solidification and cooling. The common method of painting the existing lost foam products is manual brushing or dipping, which is time-consuming and labor-intensive, uneven in thickness, and easily causes product appearance and internal quality defects. Dipping cannot be achieved for larger products, and the size and variety of products are limited, which brings inconvenience and loss to production. Utility Model Content

[0003] The utility model aims to provide a lost foam coating spraying device to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A lost foam coating spraying device comprises a base and a push rod on its side, universal wheels with a self-locking mechanism are fixedly installed at the four corners of the bottom of the base, a spraying mechanism is arranged at the upper end of the base, and the spraying mechanism comprises a storage box arranged on the left side of the upper end of the base, a box cover is threadedly installed on the top of the storage box, a handle is arranged on the side of the box cover, a reduction motor is fixedly installed on the top of the box cover, the output shaft of the reduction motor passes through the box cover and is fixedly connected with an upper flange, a rotating rod is arranged inside the storage box, a plurality of stirring paddles are arranged at intervals on the side of the rotating rod, the top of the rotating rod is fixedly connected to the lower flange, and the upper flange and the lower flange are movably connected through a bolt assembly, and also comprises:

[0006] The upper end of the base is located at the booster pump on the right side of the storage box, the discharge port of the storage box is connected with the feed port of the booster pump through a feed pipe, and a one-way valve is provided inside the end of the feed pipe close to the storage box, a pressure tank is installed on the base on the right side of the booster pump, the discharge port of the booster pump is connected with the feed port of the pressure tank through a feed pipe, the discharge port of the pressure tank is connected with a spray gun pipe through a telescopic hose, a switch valve is provided at one end of the spray gun pipe, and an anti-slip sleeve is provided on the outer side of the spray gun pipe, and the discharge end of the spray gun pipe is threadedly connected with an atomizing nozzle.

[0007] As a further solution of the utility model: a motor cover is arranged on the outside of the reduction motor, the bottom of the motor cover is fixedly connected to the top of the box cover, and a plurality of heat dissipation strips are arranged on the side wall of the motor cover.

[0008] As a further solution of the utility model: a transparent observation window is provided on the side wall of the storage box, and a discharge port with a control valve is provided at the bottom of the side wall of the storage box.

[0009] As a further solution of the utility model: a filtering device is provided at the feed pipe.

[0010] As a further solution of the utility model: side flanges are fixedly connected to both sides of the filter cartridge of the filter device, a connecting flange is fixedly provided at the connection between the feed pipe and the filter device, the side flange of the filter device and the connecting flange of the feed pipe are movably connected by a bolt assembly, and a flange gasket is provided between the side flange and the connecting flange.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] 1. The reduction motor can drive the rotating rod and the stirring paddle to rotate, thereby stirring the paint in the storage box, preventing the paint from settling, making the spraying more uniform, and effectively improving the practicality of the device. The movable connection between the output shaft of the reduction motor and the rotating rod makes the rotating rod easy to disassemble, making it convenient for the staff to clean and maintain the stirring paddle;

[0013] 2. The booster pump pumps the evenly stirred paint inside the storage box into the pressure tank, and then pushes the paint into the telescopic hose and the spray gun tube through the air compression inside the pressure tank. Finally, the pressurized paint is sprayed out through the atomizing nozzle after being atomized, so it is convenient to spray lost foams of different sizes, specifications and structures. The applicability is wider. The threaded connection between the spray gun tube and the atomizing nozzle makes the atomizing nozzle easy to disassemble and replace, so that atomizing nozzles of different sizes can be selected according to the different specifications of the lost foam, so that the paint spraying is more uniform and effective, and the spraying efficiency is improved. The pressure tank and the booster pump are used together to avoid frequent start and stop of the booster pump and extend the service life of the device;

[0014] 3. Through the setting of the filtering device, the paint sucked out from the storage box can be filtered to prevent the particulate impurities in the paint from being directly sprayed onto the lost foam, so as to achieve a better spraying effect. At the same time, it can prevent the impurities from clogging pipes and other parts after the device is used for a long time. The flange connection method makes the filtering device easy to disassemble and assemble, which is convenient for the staff to clean and maintain the filter cartridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view structural schematic diagram of embodiment 1 of the utility model.

[0016] Figure 2 This is a schematic diagram of the front cross-sectional structure of the material storage box in Example 1 of the utility model.

[0017] Figure 3 This is a schematic diagram of the front cross-sectional structure of Example 2 of the utility model.

[0018] In the figure: 1. base; 2. push rod; 3. universal wheel; 4. storage box; 5. box cover; 6. handle; 7. reduction motor; 8. upper flange; 9. rotating rod; 10. stirring paddle; 11. lower flange; 12. motor cover; 13. heat dissipation strip; 14. observation window; 15. discharge port; 16. booster pump; 17. feed pipe; 18. pressure tank; 19. feed pipe; 20. telescopic hose; 21. spray gun tube; 22. anti-slip cover; 23. atomizing nozzle; 24. filter device; 25. side flange; 26. connecting flange. DETAILED DESCRIPTION

[0019] The following embodiments will be combined with the accompanying drawings to describe the utility model in detail. In the drawings or descriptions, similar or identical parts use the same reference numerals, and in actual applications, the shape, thickness or height of each component can be enlarged or reduced. The various embodiments listed in the utility model are only used to illustrate the utility model, and are not used to limit the scope of the utility model. Any obvious modifications or changes made to the utility model do not depart from the spirit and scope of the utility model.

[0020] Example 1

[0021] See also Figures 1-2 In the embodiment of the utility model, a lost foam coating spraying device comprises a base 1 and a push rod 2 on its side, universal wheels 3 with a self-locking mechanism are fixedly installed at the four corners of the bottom of the base 1, and a spraying mechanism is arranged on the upper end of the base 1. The spraying mechanism on the base 1 can be pushed by the push rod 2 and the universal wheel 3, so as to improve the mobility of the device and make it more convenient to use.

[0022] The spraying mechanism includes a storage box 4 arranged on the left side of the upper end of the base 1. A box cover 5 is threadedly installed on the top of the storage box 4. A handle 6 is provided on the side of the box cover 5. Holding the handle 6 can conveniently rotate the box cover 5 to open and close. Opening the box cover 5 can inject paint into the storage box 4. A reduction motor 7 is fixedly installed on the top of the box cover 5. The output shaft of the reduction motor 7 passes through the box cover 5 and is fixedly connected to the upper flange 8. A rotating rod 9 is provided inside the storage box 4. A plurality of stirring paddles 10 are arranged at intervals on the side of the rotating rod 9. The top of the rotating rod 9 is fixedly connected to the lower flange 11. The upper flange 8 and the lower flange 11 are movably connected by a bolt assembly. Starting the reduction motor 7 can drive the rotating rod 9 and the stirring paddle 10 to rotate, thereby stirring the paint in the storage box 4, preventing the paint from settling, making the spraying more uniform, and effectively improving the practicality of the device. The movable connection between the output shaft of the reduction motor 7 and the rotating rod 9 makes the rotating rod 9 easy to disassemble, which is convenient for the staff to clean and maintain the stirring paddle 10.

[0023] A motor cover 12 is provided on the outside of the reduction motor 7, the bottom of the motor cover 12 is fixedly connected to the top of the box cover 5, and a plurality of heat dissipation strips 13 are provided on the side wall of the motor cover 12. The motor cover 12 can protect the reduction motor 7, and the setting of the heat dissipation strips 13 facilitates the heat dissipation of the reduction motor 7 during operation.

[0024] A transparent observation window 14 is provided on the side wall of the storage box 4, through which the staff can observe the amount of paint injected, and during the operation of the device, the amount of residual material can be observed in real time so as to add paint in time. A discharge port 15 with a control valve is provided at the bottom of the side wall of the storage box 4, through which the residual material can be discharged from the storage box 4.

[0025] A booster pump 16 is installed at the upper end of the base 1 at the right side of the storage box 4. The discharge port of the storage box 4 is connected to the feed port of the booster pump 16 through a feed pipe 17, and a one-way valve is provided inside the feed pipe 17 at one end close to the storage box 4. A pressure tank 18 is installed on the base 1 at the right side of the booster pump 16. The discharge port of the booster pump 16 is connected to the feed port of the pressure tank 18 through a feed pipe 19. The discharge port of the pressure tank 18 is connected to a spray gun pipe 21 through a telescopic hose 20. A switch valve is provided at one end of the spray gun pipe 21, and an anti-slip sleeve 22 is provided on the outer side of the spray gun pipe 21. The discharge end of the spray gun pipe 21 is threadedly connected to an atomizing nozzle 23. The paint evenly stirred inside the storage box 4 can be pumped into the pressure tank 18 through the booster pump 16, and then the paint is pushed into the telescopic hose 20 and the spray gun tube 21 through the air compression inside the pressure tank 18. Finally, the pressurized paint can be sprayed out after being atomized through the atomizing nozzle 23. The threaded connection between the spray gun tube 21 and the atomizing nozzle 23 makes it easy to disassemble and replace the atomizing nozzle 23, so that atomizing nozzles 23 of different sizes can be selected according to different specifications of the lost foam, so that the paint spraying is more uniform and effective, and the spraying efficiency is improved. The pressure tank 18 is used in conjunction with the booster pump 16 to avoid frequent starting and stopping of the booster pump 16 and extend the service life of the device.

[0026] Example 2

[0027] See also Figure 3 On the basis of Example 1, a filter device 24 is provided at the feed pipe 17. Specifically, side flanges 25 are fixedly connected to both sides of the filter cartridge of the filter device 24, and a connecting flange 26 is fixedly provided at the connection between the feed pipe 17 and the filter device 24. The side flange 25 of the filter device 24 and the connecting flange 26 of the feed pipe 17 are movably connected by a bolt assembly, and a flange gasket is provided between the side flange 25 and the connecting flange 26. Through the setting of the filter device 24, the paint sucked out from the inside of the storage box 4 can be filtered to prevent the particulate impurities in the paint from being directly sprayed onto the lost foam, so as to achieve a better spraying effect. At the same time, it can prevent the impurities from clogging the pipes and other parts after the device is used for a long time. The flange connection method makes the filter device 24 easy to disassemble and assemble, and it is convenient for the staff to clean and maintain the filter cartridge.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims in the field of lost foam spraying technology involved.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A lost foam coating spraying device, comprising a base (1) and a push rod (2) on its side, wherein universal wheels (3) with a self-locking mechanism are fixedly installed at the four corners of the bottom of the base (1), and a spraying mechanism is provided at the upper end of the base (1). It is characterized in that The spraying mechanism comprises a material storage box (4) arranged on the left side of the upper end of the base (1), a box cover (5) is threadedly installed on the top of the material storage box (4), a handle (6) is provided on the side of the box cover (5), a reduction motor (7) is fixedly installed on the top of the box cover (5), the output shaft of the reduction motor (7) passes through the box cover (5) and is fixedly connected to an upper flange (8), a rotating rod (9) is provided inside the material storage box (4), a plurality of stirring paddles (10) are spaced apart on the side of the rotating rod (9), the top of the rotating rod (9) is fixedly connected to a lower flange (11), and the upper flange (8) and the lower flange (11) are movably connected by a bolt assembly, and further comprises: The upper end of the base (1) is located at a booster pump (16) on the right side of a material storage box (4); the discharge port of the material storage box (4) is communicated with the feed port of the booster pump (16) through a feed pipe (17); and a one-way valve is provided inside one end of the feed pipe (17) close to the material storage box (4); a pressure tank (18) is installed on the base (1) on the right side of the booster pump (16); the discharge port of the booster pump (16) is communicated with the feed port of the pressure tank (18) through a feed pipe (19); the discharge port of the pressure tank (18) is connected to a spray gun pipe (21) through a telescopic hose (20); a switch valve is provided at one end of the spray gun pipe (21); and an anti-slip sleeve (22) is provided on the outer side of the spray gun pipe (21); and an atomizing nozzle (23) is threadedly connected to the discharge end of the spray gun pipe (21).

2. The lost foam coating spraying device according to claim 1, It is characterized in that A motor cover (12) is provided on the outside of the reduction motor (7), the bottom of the motor cover (12) is fixedly connected to the top of the box cover (5), and a plurality of heat dissipation strips (13) are provided on the side wall of the motor cover (12).

3. The lost foam coating spraying device according to claim 1, It is characterized in that A transparent observation window (14) is provided on the side wall of the material storage box (4), and a discharge port (15) with a control valve is provided at the bottom of the side wall of the material storage box (4).

4. The lost foam coating spraying device according to any one of claims 1 to 3, It is characterized in that The feed pipe (17) is provided with a filtering device (24).

5. The lost foam coating spraying device according to claim 4, It is characterized in that Side flanges (25) are fixedly connected to both sides of the filter cartridge of the filter device (24); a connecting flange (26) is fixedly provided at the connection between the feed pipe (17) and the filter device (24); the side flange (25) of the filter device (24) and the connecting flange (26) of the feed pipe (17) are movably connected via a bolt assembly, and a flange gasket is provided between the side flange (25) and the connecting flange (26).

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