Coating vehicle for casting sand shell shower coating

Abstract

The utility model relates to the technical field of shower coating processes, in particular to a coating vehicle for shower coating of a casting sand shell, which not only can automatically spray the casting sand shell and improve the automation degree of the device, but also can filter backflow coating and discharge filtered impurities in time. Comprising a moving mechanism; the device further comprises a stirring mechanism, a conveying mechanism, a spraying mechanism, a backflow mechanism and a filtering mechanism, the stirring mechanism is installed on the moving mechanism and used for stirring the coating, the conveying mechanism is installed on the stirring mechanism and used for conveying the coating, and the spraying mechanism is installed on the conveying mechanism and used for spraying the coating on the casting sand shell. The backflow mechanism is installed on the stirring mechanism and facilitates paint recovery, and the filtering mechanism is installed on the backflow mechanism and filters the paint.

Description

Technical Field

[0001] This utility model relates to the technical field of spray coating process, and in particular to a coating vehicle for spray coating of foundry sand shells. Background Technology

[0002] The inner surface of the sand shell must be coated with a refractory coating. The coating process is divided into brush coating and spray coating. The spray coating process is to pour refractory coating liquid onto the inner surface of the sand shell. After the coating flows over the inner surface of the sand shell, it adheres to the inner surface of the sand shell, thus completing the coating process.

[0003] Existing coating carts for casting sand shells, such as the one disclosed in utility model patent application number 202020885529.7, mainly include a coating cart frame, a coating hopper mechanism, and a coating tank. The coating tank is fixed above the coating cart frame, and a stirring device and a coating water pump are fixed inside the coating tank. The coating water pump is connected to a conveying pipe. The coating hopper mechanism includes a hopper tray, a filter screen, and a sand shell tray frame. The hopper tray is fixed above the coating tank, the sand shell tray frame is fixed inside the hopper tray, and the filter screen is fixed at the bottom of the hopper tray. In use, the sand shell is placed on the sand shell tray frame inside the hopper tray, the stirring device and the coating water pump are turned on, and the spray gun is used for spraying. The returned material flows into the hopper tray, passes through the filter screen, and flows into the coating tank. After stirring, it can be reused.

[0004] However, most existing paint trucks still require workers to use handheld spray guns, which is very troublesome. Moreover, the sprayed paint contains a lot of impurities, requiring frequent cleaning and replacement of the filter screen, which affects work efficiency. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a coating cart for casting sand shell spraying that can not only automatically spray casting sand shells, improving the automation level of the device, but also filter the returned coating and promptly discharge the filtered impurities.

[0006] This utility model discloses a coating cart for coating foundry sand shells, comprising a moving mechanism; it also includes a stirring mechanism, a conveying mechanism, a spraying mechanism, a return mechanism, and a filtering mechanism. The stirring mechanism is installed on the moving mechanism to stir the coating; the conveying mechanism is installed on the stirring mechanism to convey the coating; the spraying mechanism is installed on the conveying mechanism to spray the coating onto the foundry sand shell; the return mechanism is installed on the stirring mechanism to facilitate coating recovery; and the filtering mechanism is installed on the return mechanism to filter the coating. The operator pushes the moving mechanism to the workstation, places the foundry sand shell on the moving mechanism, and starts the stirring mechanism to stir the coating. The conveying mechanism transports the coating from the stirring mechanism to the spraying mechanism, which sprays the coating onto the foundry sand shell. Excess coating flows back to the stirring mechanism through the return mechanism, and the filtering mechanism filters the returned coating and removes impurities.

[0007] Preferably, the moving mechanism includes a frame, four sets of casters, a handle, a spray box, and a control panel. The bottom of the frame is rotatably connected to the top of the four sets of casters, with the bottom of the four sets of casters resting on the ground. The handle is mounted on the frame, and the spray box is mounted on the frame. The spray box has an internal cavity. The control panel is mounted on the frame. The operator operates the handle to push the frame to the workstation and places the casting sand shell into the cavity of the spray box. The control panel facilitates the control of spraying the casting sand shell.

[0008] Preferably, the mixing mechanism includes a storage cylinder, a stepper motor, a reducer, a first drive shaft, and multiple sets of mixing blades. The bottom end of the storage cylinder is connected to the top end of the frame, and the storage cylinder has an inner cavity. The bottom end of the stepper motor is connected to the top end of the storage cylinder, and the bottom end of the reducer is connected to the top end of the storage cylinder. The first drive shaft is rotatably installed in the inner cavity of the storage cylinder and is longitudinally connected to the reducer. Multiple sets of mixing blades are all installed on the first drive shaft. When the stepper motor is started, the stepper motor drives the first drive shaft to rotate through the reducer. The first drive shaft drives the multiple sets of mixing blades to rotate, and the multiple sets of mixing blades mix the coating material in the inner cavity of the storage cylinder.

[0009] Preferably, the conveying mechanism includes a second drive shaft, a pump body, a suction pipe, a conveying pipe, and a connecting sleeve. The second drive shaft is mounted on a reducer. The bottom end of the pump body is connected to the top end of the storage cylinder. The suction pipe communicates with the inner cavity of the storage cylinder. The conveying pipe is mounted on the pump body. The connecting sleeve is mounted on the spray box and communicates with the inside of the conveying pipe. The reducer drives the second drive shaft to rotate. The second drive shaft drives the pump body to extract the paint from the storage cylinder through the suction pipe, and at the same time, conveys the paint to the connecting sleeve through the conveying pipe.

[0010] Preferably, the spraying mechanism includes a connecting shaft, a spring, spray pipes, a nozzle, a third drive shaft, two sets of pulleys and a belt. The connecting shaft is rotatably installed in the cavity of the storage cylinder. The spring is installed on the connecting shaft and is rotatably connected to the connecting sleeve. Multiple sets of spray pipes are installed on the spring. The nozzle is installed on the connecting shaft. The third drive shaft is rotatably installed on the frame. Two sets of pulleys are installed on the connecting shaft and the third drive shaft respectively. The belt is tensioned between the two sets of pulleys. The connecting sleeve conveys the paint to the multiple sets of spray pipes through the spring. The spray pipes spray the paint out and spray it onto the casting sand shell. At the same time, the reducer drives the third drive shaft to rotate. The third drive shaft drives the connecting shaft to rotate through the two sets of pulleys and the belt. The connecting shaft drives the spring to rotate so that the paint is evenly sprayed onto each surface of the casting sand shell. After spraying is completed, the nozzle drives the connecting shaft and the spring to reverse and reset.

[0011] Preferably, the return mechanism includes a discharge pipe, a filter cylinder, a return pipe, and a check valve. The top end of the discharge pipe is connected to the bottom end of the spray box. The filter cylinder is installed on the discharge pipe and is connected to the inside of the discharge pipe. The top end of the return pipe is connected to the bottom end of the discharge pipe and is also connected to the inner cavity of the storage cylinder. The check valve is installed on the return pipe. Excess paint enters the filter cylinder through the discharge pipe for filtration. The filtered paint flows back into the inner cavity of the storage cylinder through the return pipe for reuse. The check valve prevents the paint from flowing back in the reducer.

[0012] Preferably, the filtration mechanism includes a motor, a rotating shaft, spiral blades, a hinge, and a sealing cover. The motor is mounted on the frame, the rotating shaft is rotatably mounted inside the filter cylinder, the spiral blades are mounted on the rotating shaft, the hinge is mounted on the filter cylinder, and the sealing cover is mounted on the hinge. When the operator opens the sealing cover and starts the motor, the motor drives the rotating shaft and spiral blades to rotate, and the spiral blades discharge the impurities filtered out from the filter cylinder.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the worker pushes the moving mechanism to the work station, then places the casting sand shell on the moving mechanism, starts the stirring mechanism, the stirring mechanism stirs the coating, the conveying mechanism transports the coating in the stirring mechanism to the spraying mechanism, the spraying mechanism sprays the coating onto the casting sand shell, and the excess coating flows back to the stirring mechanism through the return mechanism. The return coating is filtered by the filter mechanism and impurities are discharged. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0015] Figure 2 This is an isometric structural diagram of the moving mechanism of this utility model;

[0016] Figure 3This is a partially enlarged cross-sectional isometric structural diagram of the stirring mechanism and spraying mechanism of this utility model;

[0017] Figure 4 This is a partially enlarged cross-sectional isometric structural diagram of the conveying mechanism of this utility model;

[0018] Figure 5 This is a cross-sectional isometric structural diagram of the spraying mechanism, reflux mechanism and filtration mechanism of this utility model;

[0019] Figure 6 This is a partially enlarged top view cross-sectional structural diagram of the reflux mechanism and the filtration mechanism of this utility model.

[0020] The attached diagram is labeled as follows: 01, Moving mechanism; 11, Frame; 12, Caster wheel; 13, Handle; 14, Spray box; 15, Control panel; 02, Mixing mechanism; 21, Storage cylinder; 22, Stepper motor; 23, Reducer; 24, First drive shaft; 25, Mixing blade; 03, Conveying mechanism; 31, Second drive shaft; 32, Pump body; 33, Extraction pipe; 34, Conveying pipe; 35, Connecting sleeve; 04, Spraying mechanism; 41, Connecting shaft; 42, Spring; 43, Spray pipe; 44, Nozzle; 45, Third drive shaft; 46, Pulley; 47, Belt; 05, Return mechanism; 51, Discharge pipe; 52, Filter cylinder; 53, Return pipe; 54, Check valve; 06, Filtering mechanism; 61, Motor; 62, Rotating shaft; 63, Spiral blade; 64, Hinge; 65, Sealing cover. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0022] Example 1

[0023] This utility model discloses a coating vehicle for coating foundry sand shells, comprising a moving mechanism 01; it also includes a stirring mechanism 02, a conveying mechanism 03, a spraying mechanism 04, a return mechanism 05, and a filtering mechanism 06. The stirring mechanism 02 is mounted on the moving mechanism 01 and stirs the coating; the conveying mechanism 03 is mounted on the stirring mechanism 02 and conveys the coating; the spraying mechanism 04 is mounted on the conveying mechanism 03 and sprays the coating onto the foundry sand shell; the return mechanism 05 is mounted on the stirring mechanism 02 and facilitates coating recovery; and the filtering mechanism 06 is mounted on the return mechanism 05 and filters the coating. The moving mechanism 01 includes a frame 11 and four sets of... The frame 11 consists of four sets of casters 12, handles 13, a spray box 14, and a control panel 15. The bottom of the frame 11 is rotatably connected to the top of the four sets of casters 12, with the bottom of the four sets of casters 12 resting on the ground. The handles 13 and spray box 14 are mounted on the frame 11, and the spray box 14 has an internal cavity. The control panel 15 is mounted on the frame 11. The mixing mechanism 02 includes a storage cylinder 21, a stepper motor 22, a reducer 23, a first drive shaft 24, and multiple sets of mixing blades 25. The bottom of the storage cylinder 21 is connected to the top of the frame 11, and the storage cylinder 21 has an internal cavity. The bottom of the stepper motor 22 is connected to the storage cylinder 21. The top end of the reducer 23 is connected to the top end of the storage cylinder 21. The bottom end of the reducer 23 is connected to the top end of the storage cylinder 21. The first drive shaft 24 is rotatably installed inside the storage cylinder 21 and longitudinally connected to the reducer 23. Multiple sets of stirring blades 25 are all installed on the first drive shaft 24. The conveying mechanism 03 includes a second drive shaft 31, a pump body 32, a suction pipe 33, a conveying pipe 34, and a connecting sleeve 35. The second drive shaft 31 is installed on the reducer 23. The bottom end of the pump body 32 is connected to the top end of the storage cylinder 21. The suction pipe 33 communicates with the inside of the storage cylinder 21. The conveying pipe 34 is installed on the pump body 32. The connecting sleeve 35 is installed on the spray box 14 and connected to the pump body 23. The material pipe 34 is internally connected; the spraying mechanism 04 includes a connecting shaft 41, a spring 42, a spray pipe 43, a nozzle 44, a third drive shaft 45, two sets of pulleys 46 and a belt 47. The connecting shaft 41 is rotatably installed in the cavity of the storage cylinder 21. The spring 42 is installed on the connecting shaft 41 and is rotatably connected to the connecting sleeve 35. Multiple sets of spray pipes 43 are installed on the spring 42. The nozzle 44 is installed on the connecting shaft 41. The third drive shaft 45 is rotatably installed on the frame 11. The two sets of pulleys 46 are respectively installed on the connecting shaft 41 and the third drive shaft 45. The belt 47 is tensioned and installed between the two sets of pulleys 46.During operation, the operator first uses handle 13 to push the frame 11 to the workstation, placing the casting sand shell into the cavity of the spray box 14. The spraying of the casting sand shell is conveniently controlled via a control panel 15. The stepper motor 22 is then started, driving the first drive shaft 24 to rotate via a reducer 23. The first drive shaft 24 drives multiple sets of stirring blades 25 to rotate, mixing the coating material inside the storage cylinder 21. The reducer 23 then drives the second drive shaft 31 to rotate, which in turn drives the pump body 32 through the extraction pipe 3. 3. The paint in the storage cylinder 21 is extracted, and simultaneously conveyed through the conveying pipe 34 to the connecting sleeve 35. The connecting sleeve 35 conveys the paint through the spring 42 to multiple spray pipes 43. The spray pipes 43 spray the paint onto the casting sand shell. At the same time, the reducer 23 drives the third drive shaft 45 to rotate. The third drive shaft 45 drives the connecting shaft 41 to rotate through two sets of pulleys 46 and belt 47. The connecting shaft 41 drives the spring 42 to rotate, so that the paint is evenly sprayed onto all surfaces of the casting sand shell. After spraying is completed, the nozzle 44 drives the connecting shaft 41 and the spring 42 to reverse and reset.

[0024] Example 2

[0025] like Figures 1 to 6As shown, this utility model discloses a coating vehicle for casting sand shell coating, based on embodiment 1; the return mechanism 05 includes a discharge pipe 51, a filter cylinder 52, a return pipe 53, and a check valve 54. The top end of the discharge pipe 51 is connected to the bottom end of the spray box 14, the filter cylinder 52 is installed on the discharge pipe 51 and is connected to the inside of the discharge pipe 51, the top end of the return pipe 53 is connected to the bottom end of the discharge pipe 51, and the return pipe 53 is connected to the inner cavity of the storage cylinder 21, and the check valve 54 is installed on the return pipe 53; the filter mechanism 06 includes a motor 61, a rotating shaft 62, a spiral blade 63, and a hinge 64. 4. A sealing cover 65, a motor 61 mounted on the frame 11, a rotating shaft 62 rotatably mounted inside the filter cylinder 52, a spiral blade 63 mounted on the rotating shaft 62, a hinge 64 mounted on the filter cylinder 52, and a sealing cover 65 mounted on the hinge 64; During operation, the operator first operates the handle 13 to push the frame 11 to the work position, places the casting sand shell into the cavity of the spray box 14, and conveniently controls the spraying of the casting sand shell through the control panel 15. The stepper motor 22 is then started, and the stepper motor 22 drives the first drive shaft 24 to rotate through the reducer 23. The first drive shaft 24 drives multiple sets of agitators. The blades 25 rotate, and multiple sets of stirring blades 25 stir and mix the coating material inside the storage cylinder 21. The reducer 23 drives the second drive shaft 31 to rotate, and the second drive shaft 31 drives the pump body 32 to extract the coating material from the storage cylinder 21 through the extraction pipe 33. At the same time, the coating material is transported to the connecting sleeve 35 through the conveying pipe 34. The connecting sleeve 35 conveys the coating material to multiple sets of spray pipes 43 through the spring 42. The spray pipes 43 spray the coating material onto the casting sand shell. At the same time, the reducer 23 drives the third drive shaft 45 to rotate, and the third drive shaft 45 drives the connecting shaft 41 through two sets of pulleys 46 and belts 47. The rotating connecting shaft 41 drives the spring 42 to rotate, so that the coating is evenly sprayed onto each surface of the casting sand shell. After the spraying is completed, the nozzle 44 drives the connecting shaft 41 and the spring 42 to reverse and reset. Excess coating enters the filter cylinder 52 through the discharge pipe 51 for filtration. The filtered coating flows back into the inner cavity of the storage cylinder 21 through the return pipe 53 for reuse. By setting the check valve 54, the coating is prevented from flowing back in the reducer 23. The operator opens the sealing cover 65 and starts the motor 61. The motor 61 drives the rotating shaft 62 and the spiral blade 63 to rotate. The spiral blade 63 discharges the impurities filtered out in the filter cylinder 52.

[0026] The stepper motor 22, reducer 23, pump body 32 and motor 61 of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0027] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A coating vehicle for casting sand shell wash, comprising a moving mechanism (01); characterized in that, The coating machine also comprises a stirring mechanism (02), a conveying mechanism (03), a spraying mechanism (04), a backflow mechanism (05) and a filtering mechanism (06), the stirring mechanism (02) is installed on the moving mechanism (01) and stirs the coating, the conveying mechanism (03) is installed on the stirring mechanism (02) and conveys the coating, the spraying mechanism (04) is installed on the conveying mechanism (03) and sprays the coating on the casting sand shell, the backflow mechanism (05) is installed on the stirring mechanism (02) and facilitates the recycling of the coating, and the filtering mechanism (06) is installed on the backflow mechanism (05) and filters the coating.

2. A paint car for casting sand shell wash coating as claimed in claim 1, wherein, The moving mechanism (01) comprises a frame (11), four groups of universal wheels (12), a handle (13), a spraying box (14) and a control screen (15), the bottom end of the frame (11) is rotationally connected with the top end of the four groups of universal wheels (12), the bottom end of the four groups of universal wheels (12) abuts against the ground, the handle (13) is installed on the frame (11), the spraying box (14) is installed on the frame (11), the spraying box (14) is internally provided with a cavity, and the control screen (15) is installed on the frame (11).

3. A paint car for casting sand shell wash coating as claimed in claim 2, wherein, The stirring mechanism (02) comprises a storage cylinder (21), a stepping motor (22), a speed reducer (23), a first transmission shaft (24) and multiple groups of stirring blades (25), the bottom end of the storage cylinder (21) is connected with the top end of the frame (11), the storage cylinder (21) is internally provided with an inner cavity, the bottom end of the stepping motor (22) is connected with the top end of the storage cylinder (21), the bottom end of the speed reducer (23) is connected with the top end of the storage cylinder (21), the first transmission shaft (24) is rotationally installed in the inner cavity of the storage cylinder (21) and is longitudinally connected with the speed reducer (23), and the multiple groups of stirring blades (25) are all installed on the first transmission shaft (24).

4. A paint car for casting sand shell wash coating as claimed in claim 3, wherein, The conveying mechanism (03) comprises a second transmission shaft (31), a pump body (32), a material suction pipe (33), a material conveying pipe (34) and a connecting sleeve (35), the second transmission shaft (31) is installed on the speed reducer (23), the bottom end of the pump body (32) is connected with the top end of the storage cylinder (21), the material suction pipe (33) is in communication with the inner cavity of the storage cylinder (21), the material conveying pipe (34) is installed on the pump body (32), and the connecting sleeve (35) is installed on the spraying box (14) and is in communication with the inner portion of the material conveying pipe (34).

5. A paint car for casting sand shell wash coating as claimed in claim 4, wherein, The spraying mechanism (04) comprises a connecting shaft (41), a spring (42), multiple groups of spraying pipes (43), a spray head (44), a third transmission shaft (45), two groups of belt pulleys (46) and a belt (47), the connecting shaft (41) is rotationally installed in the cavity of the storage cylinder (21), the spring (42) is installed on the connecting shaft (41) and is in rotational communication with the connecting sleeve (35), the multiple groups of spraying pipes (43) are all installed on the spring (42), the spray head (44) is installed on the connecting shaft (41), the third transmission shaft (45) is rotationally installed on the frame (11), the two groups of belt pulleys (46) are respectively installed on the connecting shaft (41) and the third transmission shaft (45), and the belt (47) is tensioned and installed between the two groups of belt pulleys (46).

6. A paint car for casting sand shell wash coating as claimed in claim 2, wherein, The backflow mechanism (05) comprises a discharge pipe (51), a filter cylinder (52), a backflow pipe (53) and a check valve (54), the top end of the discharge pipe (51) is in communication with the bottom end of the spray tank (14), the filter cylinder (52) is installed on the discharge pipe (51) and is in communication with the inside of the discharge pipe (51), the top end of the backflow pipe (53) is in communication with the bottom end of the discharge pipe (51), and the backflow pipe (53) is in communication with the inner cavity of the storage cylinder (21), and the check valve (54) is installed on the backflow pipe (53).

7. A paint car for casting sand shell wash coating as claimed in claim 6, wherein, The filter mechanism (06) comprises a motor (61), a rotating shaft (62), a spiral blade (63), a hinge (64) and a sealing cover (65), the motor (61) is installed on the frame (11), the rotating shaft (62) is rotatably installed in the filter cylinder (52), the spiral blade (63) is installed on the rotating shaft (62), the hinge (64) is installed on the filter cylinder (52), and the sealing cover (65) is installed on the hinge (64).

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