Sand cleaning device for air compressor rotor coated sand casting and operation method thereof

Abstract

The application belongs to the technical field of air compressor rotor processing, in particular to a sand cleaning treatment device for air compressor rotor coated sand casting and an operation method thereof. The device comprises a water tank, the top of the water tank is fixedly connected with a supporting plate, the outer wall of the supporting plate is fixedly connected with a fixed plate, and the inner wall of the fixed plate is slidably connected with four sliding shafts. The sand cleaning treatment device for air compressor rotor coated sand casting and the operation method thereof are provided. Hot gas is sprayed upward through the gas conveying pipeline to heat the rotor surface, the bonding agent on the rotor surface is disabled, the adhesion between the sand and the rotor is reduced, subsequent sand flushing is facilitated, the hot gas is wrapped through the cooperation of the two guard plates and the two side plates to avoid rapid dispersion of the hot gas, and the heating effect of the hot gas on the rotor is improved. After the rotor is flushed and cleaned, hot gas is blown upward through the gas conveying pipeline to help dry the flushed rotor, preventing residual moisture in the rotor from causing ineffective rust prevention treatment or oxidation corrosion.

Description

Technical Field

[0001] This invention belongs to the field of air compressor rotor processing technology, specifically a sand cleaning device and its operation method for air compressor rotor coated sand casting. Background Technology

[0002] An air compressor is a device used to compress gas. Air compressors are similar in structure to water pumps. Most air compressors are reciprocating piston, rotary vane, or rotary screw structures. The air compressor rotor is an essential component of an air compressor. Most are formed by coated sand casting. After the rotor is removed from the sand core, a high-pressure spray gun is needed to wash the sand layer adhering to the rotor surface to remove residual sand particles and ensure the rotor size.

[0003] However, after air compressor rotors are produced by coated sand casting, some sand adheres firmly to the rotor due to the binder, making it difficult to effectively remove the sand by high-pressure water washing alone. Furthermore, the sand core at the corner of the air passage of the air compressor rotor is prone to local sintering due to prolonged baking by high-temperature molten steel during casting, forming high-hardness sand blocks. The impact force of high-pressure water washing is insufficient to break them up; instead, it will compact and get stuck at the corner of the air passage. In addition, when cleaning the air compressor rotor by washing, the impact of the water flow will cause sand to splash, posing a safety hazard to the surrounding workers. Therefore, this invention provides a sand cleaning device and its operating method for coated sand casting of air compressor rotors. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies and address the issue that after air compressor rotors are produced using coated sand casting, some sand adheres firmly to the rotor due to the binder, making it difficult to effectively remove the sand using only high-pressure water washing. Furthermore, the sand cores at the corners of the air compressor rotor's air passages are prone to localized sintering during prolonged baking by high-temperature molten steel during casting, forming hard sand blocks that are not easily broken by the impact of high-pressure water washing, instead becoming compacted and stuck at the corners of the air passages. Additionally, the impact of the water flow during sand removal from the air compressor rotor can cause sand to splash, posing a safety hazard to nearby workers. This invention proposes a sand removal device and its operating method for coated sand casting of air compressor rotors.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: A sand cleaning device for coated sand casting of an air compressor rotor, comprising a water tank, a support plate fixedly connected to the top of the water tank, a fixing plate fixedly connected to the outer wall of the support plate, four sliding shafts slidably connected to the inner wall of the fixing plate, a limit block fixedly connected to the top of the four sliding shafts, and an installation block fixedly connected to the bottom of the four sliding shafts. A first motor is fixedly connected inside the installation block, and a sleeve is fixedly connected to the output end of the first motor. The outer wall of the sleeve is equidistantly fixedly connected to… There are several hydraulic cylinders. The output end of each hydraulic cylinder extends into the interior of a sleeve and is fixedly connected to a clamping plate. A linear slide is fixedly connected to the top of a support plate. A slider is slidably connected to the inner wall of the linear slide. A mounting plate is fixedly connected to the bottom of the slider. A nozzle is fixedly connected to the bottom of the mounting plate. A water inlet is opened at the top of the water tank. A water pump is fixedly connected to the outer wall of the water tank. Water pipes are fixedly connected to both the output and input ends of the water pump. One end of the water pipe at the input end extends into the interior of the water tank, and one end of the water pipe at the output end is connected to the nozzle.

[0006] Preferably, the bottom of the mounting plate is symmetrically fixedly connected to two protective plates, and two side plates are symmetrically fixedly connected between the two protective plates. Both side plates are fixedly connected to the mounting plate, and both protective plates have a feed inlet inside.

[0007] Preferably, an exhaust fan is fixedly connected to one side of one of the protective plates. The output end of the exhaust fan extends between the two protective plates and is fixedly connected to an air supply pipe. An air inlet pipe is fixedly connected to the input end of the exhaust fan. A sleeve is fixedly connected to the outer wall of the air supply pipe. A heating wire is fixedly connected to the inner wall of the sleeve. A bracket is fixedly connected to the side of each of the two side plates that are close to each other. A stop is fixedly connected between the two brackets. The top of the stop is set as an arc surface. The stop is located above the sleeve.

[0008] Preferably, the inner side of the guard plate and above the feed inlet is provided with an installation groove, the installation groove is connected to the feed inlet, a connecting plate is slidably connected to the inner wall of the installation groove, a sliding plate is fixedly connected to the bottom of the connecting plate, the bottom of the sliding plate extends into the inner side of the feed inlet, and the sliding plate is slidably connected to the guard plate.

[0009] Preferably, each of the two side plates is fixedly connected to a mounting bracket on the side that is close to each other, and a rotating plate is rotatably connected to the inner wall of each of the two mounting brackets. The rotating plate is located below the feed inlet, and a striking block is fixedly connected to the outer wall of the rotating plate. A rubber pad is fixedly connected to the top of the striking block. A spring sheet is fixedly connected between the rotating plate and the side plate, and a drive assembly is provided inside the stop block.

[0010] Preferably, the drive assembly includes a second motor, which is fixedly installed inside the stop block. The output end of the second motor extends between the two rotating plates and is fixedly connected to a first cam, which works in conjunction with the rotating plates.

[0011] Preferably, a filter plate is fixedly connected to the inner wall of the water inlet, two baffles are symmetrically fixedly connected to the top of the water tank with the filter plate as the center, a limiting plate is fixedly connected to the outer wall of the other protective plate, a limiting shaft is slidably connected to the inner wall of the limiting plate, a scraper is fixedly connected to the bottom of the limiting shaft, the bottom of the scraper is in contact with the filter plate, the top of the scraper is set as an inclined surface, guide blocks are fixedly connected to both sides of the limiting shaft, the guide blocks are set as cylinders, and a guide assembly is provided on the outer wall of the support plate.

[0012] Preferably, the guiding assembly includes two guide plates, which are symmetrically fixedly installed on the outer wall of the support plate. The scraper is located between the two guide plates. Each guide plate has a first groove on its outer wall. A second groove is formed on the outer wall of the guide plate below the first groove. A connecting groove is formed on the outer wall of the guide plate between the first and second grooves. Both the first and second grooves communicate with the connecting groove. An inclined groove is formed on the outer wall of the guide plate away from the connecting groove. The inclined groove is located between the first and second grooves and communicates with the inclined groove. A rotating shaft is fixedly connected to the first groove of the guide plate. A partition is rotatably connected to the outer wall of the rotating shaft. A torsion spring for use with the partition is sleeved on the outer wall of the rotating shaft. The partition fits into the inclined groove. The heights of both the first and second grooves are greater than the diameter of the circular end face of the guide block.

[0013] Preferably, a telescopic spring is sleeved on the outer wall of the sliding shaft. The bottom of the telescopic spring is fixedly connected to the mounting block, and the top of the telescopic spring is fixedly connected to the fixing plate. A third motor is fixedly connected to one side of the support plate. The third motor is located below the mounting block. The output end of the third motor passes through the support plate and is fixedly connected to a second cam. A protrusion is fixedly connected to the bottom of the mounting block. The bottom of the protrusion is set as a symmetrical inclined surface. The second cam cooperates with the protrusion.

[0014] An operating method for a sand cleaning device for coated sand casting of an air compressor rotor, applicable to the aforementioned sand cleaning device for coated sand casting of an air compressor rotor, comprising the following steps:

[0015] S1: Insert the end of the rotor into the sleeve, control several clamping plates to clamp and fix the rotor through several hydraulic cylinders, start the nozzle to rinse the rotor, control the rotor to rotate through the first motor, and control the nozzle to move laterally through the linear slide.

[0016] S2: Before rinsing the rotor, start the exhaust fan and heating wire to spray hot air upward through the air supply pipe to heat the rotor surface above. Start the second motor to drive the striking block to strike the rotor surface and loosen the surface sand.

[0017] S3: Start the third motor and control the rotor to vibrate downwards continuously to shake off the sintered sand core at the corner of the rotor air passage. After the sand is washed away, control the rotor to vibrate downwards again to shake off the residual water from the washing process.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. The present invention relates to a sand cleaning device and its operation method for coated sand casting of an air compressor rotor. The device uses a sliding plate to close the empty area of ​​the feed inlet, and two guard plates and two side plates work together to protect the rotor washing area, preventing water jets and sand from splashing and posing a safety hazard to surrounding workers.

[0020] 2. The air compressor rotor coated sand casting sand cleaning device and its operation method described in this invention, through the cooperation of an air supply pipe and a heating wire, allows hot air to be sprayed upward through the air supply pipe to heat the rotor surface above, causing the adhesive on the rotor surface to fail, reducing the adhesion between the sand and the rotor, facilitating subsequent rinsing and sand cleaning. Furthermore, the cooperation of two protective plates and two side plates encapsulates the hot air, preventing it from dissipating too quickly and improving the heating effect of the hot air on the rotor. After the rotor is rinsed and sand cleaned, hot air is similarly blown upward through the air supply pipe to help dry the rinsed rotor, preventing residual moisture inside the rotor from causing subsequent rust prevention treatment failure or oxidation and corrosion.

[0021] 3. The sand cleaning device and its operation method for coated sand casting of air compressor rotors described in this invention, through the cooperation of the first cam and the rotating plate, causes the striking block to impact upwards, striking the surface of the rotor to loosen the surface sand before rinsing, thereby improving sand cleaning efficiency and reducing high-pressure rinsing time. When sintering occurs in the sand core at the corner of the rotor air passage, the cooperation of the second cam and the protrusion controls the rotor to vibrate continuously downwards, which facilitates the shaking off of the sintered sand core at the corner of the rotor air passage, preventing the sintered sand core from being compacted and stuck at the corner of the air passage during rinsing. After the rotor is rinsed and sand-cleaned, the rotor is controlled to vibrate continuously downwards to shake off the residual water from rinsing, saving subsequent drying time. The first motor controls the sleeve to rotate, which drives the rotor to rotate, facilitating rinsing of different positions on the rotor. When sintering occurs in the sand core at the corner of the rotor air passage, the first motor controls the rotor to rotate so that the direction of the sintered position on the rotor is downwards, making it easier to shake off the sintered sand core. Attached Figure Description

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] Figure 1 This is a perspective view of the water tank and guide plate of the present invention in use;

[0024] Figure 2 This is a perspective view of the side plate and guard plate of the present invention used together;

[0025] Figure 3 This is an exploded view of the linear slide table of the present invention used in conjunction with a water tank;

[0026] Figure 4 This is a cross-sectional view of the scraper and filter plate of the present invention in use;

[0027] Figure 5 This is a perspective view of the first motor and sleeve of the present invention in use;

[0028] Figure 6 This is an exploded view of the guide block and guide plate used in conjunction with the present invention;

[0029] Figure 7 This is a perspective view of the partition and inclined groove of the present invention in use;

[0030] Figure 8 This is an exploded view of the side plate and guard plate used in conjunction with the present invention;

[0031] Figure 9 This is a cross-sectional view of the first cam of the present invention in use with the rotating plate;

[0032] Figure 10 This is a perspective view of the rotating plate and the striking block of the present invention in use;

[0033] Figure 11 This is a cross-sectional view of the protective plate and the sliding plate of the present invention in use.

[0034] In the diagram: 1. Water tank; 2. Support plate; 3. Fixing plate; 4. Sliding shaft; 5. Limiting block; 6. Mounting block; 7. Telescopic spring; 8. First motor; 9. Sleeve; 10. Hydraulic cylinder; 11. Clamping plate; 12. Linear slide; 13. Slider; 14. Mounting plate; 15. Nozzle; 16. Water inlet; 17. Water pump; 18. Water pipe; 19. Side plate; 20. Protective plate; 21. Feed inlet; 22. Bracket; 23. Stop block; 24. Exhaust fan; 25. Air supply pipe; 26. Air inlet pipe; 27. Casing; 28. Heating element. 29. Wire; 30. Mounting groove; 31. Connecting plate; 32. Slide plate; 33. Mounting bracket; 34. Turning plate; 35. Striking block; 36. Rubber pad; 37. Spring sheet; 38. Second motor; 39. First cam; 40. Filter plate; 41. Limiting plate; 42. Limiting shaft; 43. Scraper; 44. Guide plate; 45. First slide groove; 46. Second slide groove; 47. Connecting groove; 48. Inclined groove; 49. Rotating shaft; 50. Partition plate; 51. Guide block; 52. Third motor; 53. Second cam; 54. Protrusion; 55. Baffle. Detailed Implementation

[0035] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0036] like Figures 1 to 11 As shown, the present invention provides a technical solution: a sand cleaning device for coated sand casting of an air compressor rotor, comprising a water tank 1, a support plate 2 fixedly connected to the top of the water tank 1, a fixing plate 3 fixedly connected to the outer wall of the support plate 2, four sliding shafts 4 slidably connected to the inner wall of the fixing plate 3, a limit block 5 fixedly connected to the top of the four sliding shafts 4, and an mounting block 6 fixedly connected to the bottom of the four sliding shafts 4, a first motor 8 fixedly connected inside the mounting block 6, a sleeve 9 fixedly connected to the output end of the first motor 8, and a plurality of hydraulic cylinders 10 fixedly connected at equal intervals to the outer wall of the sleeve 9, the output ends of the hydraulic cylinders 10 extending into the interior of the sleeve 9 and fixed. A clamping plate 11 is connected to the top of the support plate 2, and a linear slide 12 (the linear slide 12 consists of a body, guide rail, drive component, and slider 13, which is the prior art) is fixedly connected to the top of the support plate 2. The inner wall of the linear slide 12 is slidably connected to the slider 13. The bottom of the slider 13 is fixedly connected to the mounting plate 14, and the bottom of the mounting plate 14 is fixedly connected to the nozzle 15. The top of the water tank 1 has a water inlet 16. The outer wall of the water tank 1 is fixedly connected to the water pump 17. The output end and the input end of the water pump 17 are both fixedly connected to water pipes 18. One end of the water pipe 18 at the input end extends into the interior of the water tank 1, and one end of the water pipe 18 at the output end is connected to the nozzle 15.

[0037] The above technical solution involves inserting the end of the rotor into the sleeve 9, controlling several clamping plates 11 to move closer together via several hydraulic cylinders 10 to clamp and fix the rotor, filling the water tank 1 with clean water, starting the water pump 17 to pump the clean water along the water pipe 18 to the nozzle 15, and rinsing the rotor below through the nozzle 15. The first motor 8 is started to drive the sleeve 9 to rotate, making the rotor rotate, which facilitates rinsing different positions of the rotor. The slider 13 is controlled to move laterally via the linear slide table 12, which drives the mounting plate 14 and the nozzle 15 to move laterally, thereby adjusting the position for rinsing the rotor.

[0038] Specifically, two protective plates 20 are symmetrically fixedly connected to the bottom of the mounting plate 14, and two side plates 19 are symmetrically fixedly connected between the two protective plates 20. Both side plates 19 are fixedly connected to the mounting plate 14. Each of the two protective plates 20 has a feed inlet 21 inside. An installation groove 29 is provided inside the protective plate 20 and above the feed inlet 21. The installation groove 29 communicates with the feed inlet 21. A connecting plate 30 is slidably connected to the inner wall of the installation groove 29. A sliding plate 31 is fixedly connected to the bottom of the connecting plate 30. The bottom of the sliding plate 31 extends into the inside of the feed inlet 21. The sliding plate 31 is slidably connected to the protective plate 20.

[0039] The above technical solution allows the rotor to pass through the feed inlet 21, and the open area of ​​the feed inlet 21 is sealed by the slide plate 31. The two guard plates 20 and the two side plates 19 work together to protect the area where the rotor is being washed, preventing the sprayed water and sand from splashing and posing a safety hazard to the surrounding workers.

[0040] Specifically, an exhaust fan 24 is fixedly connected to one side of one of the protective plates 20. The output end of the exhaust fan 24 extends between the two protective plates 20 and is fixedly connected to an air supply pipe 25. An air inlet pipe 26 is fixedly connected to the input end of the exhaust fan 24. A sleeve 27 is fixedly connected to the outer wall of the air supply pipe 25. A heating wire 28 is fixedly connected to the inner wall of the sleeve 27. A bracket 22 is fixedly connected to the side of the two side plates 19 that are close to each other. A stop block 23 is fixedly connected between the two brackets 22. The top of the stop block 23 is set as an arc surface. The stop block 23 is located above the sleeve 27.

[0041] With the above technical solution, before rinsing the rotor, the exhaust fan 24 is started, allowing air to enter from the bottom of the air intake pipe 26 and exit from the top of the air delivery pipe 25. The air sprayed from the air delivery pipe 25 enters the casing 27, and the heating wire 28 is activated to heat the air entering the casing 27. The heated air flows upward and heats the rotor surface above, causing the adhesive on the rotor surface to fail, reducing the adhesion between the sand and the rotor, which facilitates subsequent rinsing and sand removal. In addition, the cooperation of the two guard plates 20 and the two side plates 19 encloses the hot air, preventing the hot air from dissipating too quickly and improving the heating effect of the hot air on the rotor. At the same time, the first motor 8 controls the rotor to rotate and adjust the contact surface between the hot air and the rotor. When rinsing the heated rotor, the set baffle 23 can block the falling water and prevent the rinsing water from entering the casing 27. After the rotor is rinsed and the sand is removed, the hot air is blown upward through the air delivery pipe 25 to help dry the rinsed rotor and prevent residual moisture inside the rotor from causing the subsequent anti-rust treatment to fail or oxidation and corrosion.

[0042] Specifically, each of the two side plates 19 is fixedly connected to a mounting bracket 32 ​​on the side closest to each other. The inner walls of the two mounting brackets 32 are rotatably connected to a rotating plate 33. The rotating plate 33 is located below the feed inlet 21. The outer wall of the rotating plate 33 is fixedly connected to a striking block 34. The top of the striking block 34 is fixedly connected to a rubber pad 35. A spring sheet 36 is fixedly connected between the rotating plate 33 and the side plate 19. A drive assembly is provided inside the stop block 23. The drive assembly includes a second motor 37, which is fixedly installed inside the stop block 23. The output end of the second motor 37 extends between the two rotating plates 33 and is fixedly connected to a first cam 38. The first cam 38 works in conjunction with the rotating plate 33.

[0043] Through the above technical solution, the second motor 37 is started, driving the first cam 38 to rotate. When the protruding end of the first cam 38 rotates to a position close to the rotating plate 33, under the pressure of the first cam 38, the rotating plate 33 is pushed to rotate within the mounting bracket 32, pressing the spring plate 36. When the first cam 38 rotates to a position separated from the rotating plate 33, under the action of the spring plate 36, the rotating plate 33 is driven to impact upward, causing the striking block 34 to impact upward, striking the surface of the rotor, loosening the surface sand, and then rinsing, improving the sand removal efficiency and reducing the high-pressure rinsing time. The rubber pad 35 is set to protect the striking position of the striking block 34, avoiding damage to the rotor when the striking block 34 strikes the rotor.

[0044] Specifically, a filter plate 39 is fixedly connected to the inner wall of the inlet 16. Two baffles 54 are symmetrically fixedly connected to the top of the water tank 1 with the filter plate 39 as the center. A limit plate 40 is fixedly connected to the outer wall of another protective plate 20. A limit shaft 41 is slidably connected to the inner wall of the limit plate 40. A scraper 42 is fixedly connected to the bottom of the limit shaft 41. The bottom of the scraper 42 is in contact with the filter plate 39. The top of the scraper 42 is set as an inclined surface. Guide blocks 50 are fixedly connected to both sides of the limit shaft 41. The guide blocks 50 are set as cylinders. A guide assembly is provided on the outer wall of the support plate 2. The guide assembly includes two guide plates 43. The two guide plates 43 are symmetrically fixedly installed on the outer wall of the support plate 2. The scraper 42 is located between the two guide plates 43. The outer walls of the two guide plates 43 are provided with a first sliding groove 44. A second slide groove 45 is formed on the outer wall of guide plate 43 below the first slide groove 44. A connecting groove 46 is formed on the outer wall of guide plate 43 between the first slide groove 44 and the second slide groove 45. Both the first slide groove 44 and the second slide groove 45 are connected to the connecting groove 46. An inclined groove 47 is formed on the outer wall of guide plate 43 away from the connecting groove 46. The inclined groove 47 is located between the first slide groove 44 and the second slide groove 45. Both the first slide groove 44 and the second slide groove 45 are connected to the inclined groove 47. A rotating shaft 48 is fixedly connected to the first slide groove 44 of guide plate 43. A partition plate 49 is rotatably connected to the outer wall of rotating shaft 48. A torsion spring is fitted on the outer wall of rotating shaft 48 to cooperate with partition plate 49. Partition plate 49 fits into inclined groove 47. The height of the first slide groove 44 and the second slide groove 45 is slightly larger than the diameter of the circular end face of guide block 50.

[0045] Through the above technical solution, the water falling from the rotor during rinsing flows downward between the two guard plates 20 and the two side plates 19. The filter plate 39 filters the falling water, and the filtered clean water re-enters the water tank 1 through the inlet 16, allowing for water recycling. The sand filtered by the filter plate 39 remains on its top. When the mounting plate 14 and guard plates 20 move laterally to adjust the position for rotor rinsing, the limiting plate 40 and limiting shaft 41 move laterally, causing the scraper 42 to move against the top of the filter plate 39. The scraper 42 removes the sand from the top of the filter plate 39, preventing sand from clogging the filter plate 39 and affecting the filtration effect. When the limiting plate 40 and limiting shaft 41 move to the right, the guide block 50 slides within the second slide groove 45. When the guide block 50 moves to the inclined groove 47, guided by the inclined groove 47, the guide block 50 moves towards... The upward movement causes the limiting shaft 41 to slide upward within the limiting plate 40, causing the scraper 42 to move upward and separate from the filter plate 39. Simultaneously, the guide block 50 moves upward, pushing the partition 49 to rotate upward. The torsion spring is stressed, and when the guide block 50 moves into the first chute 44, the torsion spring causes the partition 49 to reset, blocking the inclined groove 47. When the limiting plate 40 and limiting shaft 41 move to the left, the guide block 50 slides within the first chute 44. When the guide block 50 moves to the connecting groove 46, gravity causes it to move downward, and the limiting shaft 41 slides downward within the limiting plate 40, causing the scraper 42 to move downward and re-engage with the filter plate 39. This process repeats, and whenever the limiting plate 40 and limiting shaft 41 move to the right, the sand on the filter plate 39 is pushed to the right, facilitating sand collection and processing.

[0046] Specifically, a telescopic spring 7 is fitted on the outer wall of the sliding shaft 4. The bottom of the telescopic spring 7 is fixedly connected to the mounting block 6, and the top of the telescopic spring 7 is fixedly connected to the fixing plate 3. A third motor 51 is fixedly connected to one side of the support plate 2. The third motor 51 is located below the mounting block 6. The output end of the third motor 51 passes through the support plate 2 and is fixedly connected to the second cam 52. A protrusion 53 is fixedly connected to the bottom of the mounting block 6. The bottom of the protrusion 53 is set as a symmetrical inclined surface. The second cam 52 and the protrusion 53 are used in conjunction.

[0047] Through the above technical solution, when the sand core at the corner of the rotor air passage is sintered, the first motor 8 controls the rotor to rotate, so that the sintered position of the rotor faces downward. The third motor 51 is started, driving the second cam 52 to rotate. When the protruding end of the second cam 52 rotates to a position close to the protrusion 53, the protrusion 53 is pushed upward by the compression of the second cam 52, which drives the mounting block 6 to move upward, so that the first motor 8 and the rotor move upward and compress the telescopic spring 7. When the protruding end of the second cam 52 rotates to a position away from the protrusion 53, the protrusion 53 loses the compression of the second cam 52. Under the influence of the telescopic spring 7 and the rotor's own weight, the rotor moves downward quickly and vibrates. This is repeated. Through multiple downward vibrations, the sintered sand core at the corner of the rotor air passage is shaken off, avoiding the sintered sand core being compacted and stuck at the corner of the air passage during rinsing. After the rotor is rinsed and cleaned of sand, the third motor 51 controls the rotor to continue to vibrate downward, which helps to shake off the residual water from rinsing and saves subsequent drying time.

[0048] An operating method for a sand cleaning device for coated sand casting of an air compressor rotor, applicable to the aforementioned sand cleaning device for coated sand casting of an air compressor rotor, comprising the following steps:

[0049] S1: Insert the end of the rotor into the sleeve 9, control several clamping plates 11 to clamp and fix the rotor through several hydraulic cylinders 10, start the nozzle 15 to rinse the rotor, control the rotor to rotate through the first motor 8, and control the nozzle 15 to move laterally through the linear slide table 12.

[0050] S2: Before rinsing the rotor, start the exhaust fan 24 and heating wire 28 to spray hot air upward from the air supply pipe 25 to heat the rotor surface above. Start the second motor 37 to drive the striking block 34 to strike the rotor surface and loosen the surface sand.

[0051] S3: Start the third motor 51 and control the rotor to vibrate downward continuously to shake off the sintered sand core at the corner of the rotor air passage. After the sand is washed away, control the rotor to vibrate downward continuously again to shake off the residual water from the washing process.

[0052] In use, the rotor is passed through the feed inlet 21, and the open area of ​​the feed inlet 21 is sealed by the slide plate 31. Two guard plates 20, in conjunction with two side plates 19, protect the rotor washing area, preventing water and sand from splashing and posing a safety hazard to nearby workers. The end of the rotor is inserted into the sleeve 9, and several clamping plates 11 are brought closer together by several hydraulic cylinders 10 to clamp and fix the rotor. Before washing the rotor, the exhaust fan 24 is started, allowing air to enter from the bottom of the air intake pipe 26 and exit from the top of the air delivery pipe 25. The air ejected from the air delivery pipe 25 enters the casing 27, and the heating wire 28 is activated to heat the air entering the casing 27. The heated air flows upwards, heating the surface of the rotor above, thus rinsing the rotor surface. The adhesive failure reduces the adhesion between the sand and the rotor, facilitating subsequent rinsing and sand removal. Furthermore, the cooperation of two protective plates 20 and two side plates 19 encapsulates the hot air, preventing it from dissipating too quickly and improving the heating effect on the rotor. Simultaneously, the first motor 8 controls the rotor's rotation, adjusting the contact surface between the hot air and the rotor. The second motor 37 is activated, driving the first cam 38 to rotate. When the protruding end of the first cam 38 rotates close to the rotating plate 33, the pressure from the first cam 38 pushes the rotating plate 33 to rotate within the mounting bracket 32, compressing the spring plate 36. When the first cam 38 rotates to a position separating from the rotating plate 33, the spring plate 36 causes the rotating plate 33 to impact upwards, causing the striking block 34 to impact upwards, striking the rotor surface. Loosen the surface sand and then rinse to improve sand removal efficiency and reduce high-pressure rinsing time. Rubber pads 35 protect the impact point of the striking block 34, preventing damage to the rotor surface when it strikes. Fill the water tank 1 with clean water and start the water pump 17 to pump water along the water pipe 18 to the nozzle 15. The nozzle 15 rinses the rotor below. Start the first motor 8 to rotate the sleeve 9, causing the rotor to rotate and facilitating rinsing of different parts of the rotor. The linear slide table 12 controls the lateral movement of the slider 13, which in turn moves the mounting plate 14 and nozzle 15 laterally, thus adjusting the rinsing position of the rotor. When rinsing the heated rotor, the baffle 23 blocks the falling water, preventing rinsing damage. Water enters the housing 27, and the water rinsing the rotor flows downward between the two guard plates 20 and the two side plates 19. Through the filter plates 39, the rinsing water is filtered. The filtered clean water re-enters the water tank 1 through the inlet 16, allowing for water recycling. The sand filtered by the filter plates 39 remains on their top. When the mounting plate 14 and guard plates 20 move laterally to adjust the position for rinsing the rotor, the limiting plate 40 and limiting shaft 41 move laterally, causing the scraper 42 to move against the top of the filter plates 39. The scraper 42 removes the sand from the top of the filter plates 39, preventing sand from clogging the filter plates and affecting the filtration effect. When the limiting plate 40 and limiting shaft 41 move to the right, the guide block 50 slides within the second groove 45.When the guide block 50 moves to the inclined groove 47, guided by the inclined groove 47, the guide block 50 moves upward, driving the limiting shaft 41 and scraper 42 to move upward, causing the scraper 42 to separate from the filter plate 39. Simultaneously, the guide block 50 pushes the partition plate 49 to rotate upward. When the guide block 50 moves into the first sliding groove 44, under the action of gravity, the partition plate 49 naturally droops, blocking the inclined groove 47. When the limiting plate 40 and the limiting shaft 41 move to the left, the guide block 50 slides within the first sliding groove 44. When 50 moves to the connecting groove 46, under the action of gravity, the limiting shaft 41 and the guide block 50 move downward, driving the scraper 42 to move downward and re-fit with the filter plate 39. This process repeats. Whenever the limiting plate 40 and the limiting shaft 41 are moved to the right, the sand on the filter plate 39 is pushed to the right, facilitating sand collection and processing. When the sand core at the corner of the rotor air passage sinters, the first motor 8 controls the rotor to rotate, so that the direction of the sintered position on the rotor is downward, and the third motor 51 is started, driving the second cam. When the second cam 52 rotates, and the protruding end of the second cam 52 rotates to a position close to the protrusion 53, the protrusion 53 is pushed upward by the compression of the second cam 52, which in turn moves the mounting block 6 upward, causing the first motor 8 and the rotor to move upward and compress the telescopic spring 7. When the protruding end of the second cam 52 rotates to a position away from the protrusion 53, the compression of the second cam 52 is lost. Under the influence of the telescopic spring 7 and the rotor's own weight, the rotor moves downward rapidly and vibrates. This process repeats itself, and through multiple downward vibrations, the rotor is easily moved downward. The sintered sand core at the corner of the air passage is shaken off, preventing it from being compacted and stuck at the corner during rinsing. As the first motor 8 and rotor move upwards, the rotor presses against the bottom of the sliding plate 31, pushing it upwards. When the rotor moves downwards, gravity causes the sliding plate 31 to move downwards and reset, re-blocking the feed inlet 21. After rinsing and cleaning the rotor, the third motor 51 controls the rotor to continue vibrating downwards, facilitating the removal of residual water and saving subsequent drying time.

[0053] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0054] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sand cleaning device for coated sand casting of an air compressor rotor, characterized in that: Includes a water tank (1), the top of which is fixedly connected to a support plate (2), the outer wall of which is fixedly connected to a fixing plate (3), the inner wall of which is slidably connected to four sliding shafts (4), the top of which is fixedly connected to a limit block (5), the bottom of which is fixedly connected to a mounting block (6), the inside of which is fixedly connected to a first motor (8), the output end of which is fixedly connected to a sleeve (9), the outer wall of which is fixedly connected to a plurality of hydraulic cylinders (10), the output end of which extends into the inside of which is fixedly connected to the sleeve (9). There is a clamping plate (11), the top of the support plate (2) is fixedly connected to a linear slide (12), the inner wall of the linear slide (12) is slidably connected to a slider (13), the bottom of the slider (13) is fixedly connected to an mounting plate (14), the bottom of the mounting plate (14) is fixedly connected to a nozzle (15), the top of the water tank (1) is provided with a water inlet (16), the outer wall of the water tank (1) is fixedly connected to a water pump (17), the output end and the input end of the water pump (17) are both fixedly connected to water pipes (18), one end of the water pipe (18) at the input end extends into the interior of the water tank (1), and one end of the water pipe (18) at the output end is connected to the nozzle (15). The bottom of the mounting plate (14) is symmetrically fixedly connected to two guard plates (20), and two side plates (19) are symmetrically fixedly connected between the two guard plates (20). Both side plates (19) are fixedly connected to the mounting plate (14), and both guard plates (20) have inlets (21) inside. A mounting bracket (32) is fixedly connected to the side of each of the two side plates (19) that are close to each other. A rotating plate (33) is rotatably connected to the inner wall of each of the two mounting brackets (32). The rotating plate (33) is located below the feed inlet (21). A striking block (34) is fixedly connected to the outer wall of the rotating plate (33). A rubber pad (35) is fixedly connected to the top of the striking block (34). A spring sheet (36) is fixedly connected between the rotating plate (33) and the side plate (19). The outer wall of the sliding shaft (4) is fitted with a telescopic spring (7). The bottom of the telescopic spring (7) is fixedly connected to the mounting block (6). The top of the telescopic spring (7) is fixedly connected to the fixing plate (3). A third motor (51) is fixedly connected to one side of the support plate (2). The third motor (51) is located below the mounting block (6). The output end of the third motor (51) passes through the support plate (2) and is fixedly connected to a second cam (52). A protrusion (53) is fixedly connected to the bottom of the mounting block (6). The bottom of the protrusion (53) is set as a symmetrical inclined surface. The second cam (52) and the protrusion (53) are used in conjunction.

2. The sand cleaning device for coated sand casting of an air compressor rotor according to claim 1, characterized in that: A fan (24) is fixedly connected to one side of one of the guard plates (20). The output end of the fan (24) extends between the two guard plates (20) and is fixedly connected to an air supply pipe (25). An air inlet pipe (26) is fixedly connected to the input end of the fan (24). A sleeve (27) is fixedly connected to the outer wall of the air supply pipe (25). A heating wire (28) is fixedly connected to the inner wall of the sleeve (27). A bracket (22) is fixedly connected to the side of the two side plates (19) that are close to each other. A stop (23) is fixedly connected between the two brackets (22). The top of the stop (23) is set as an arc surface. The stop (23) is located above the sleeve (27).

3. The sand cleaning device for coated sand casting of an air compressor rotor according to claim 2, characterized in that: An installation groove (29) is provided inside the guard plate (20) and above the feed inlet (21). The installation groove (29) communicates with the feed inlet (21). A connecting plate (30) is slidably connected to the inner wall of the installation groove (29). A sliding plate (31) is fixedly connected to the bottom of the connecting plate (30). The bottom of the sliding plate (31) extends into the inside of the feed inlet (21). The sliding plate (31) is slidably connected to the guard plate (20).

4. The sand cleaning device for coated sand casting of an air compressor rotor according to claim 3, characterized in that: The stop block (23) is provided with a drive assembly, which includes a second motor (37). The second motor (37) is fixedly installed inside the stop block (23). The output end of the second motor (37) extends between the two rotating plates (33) and is fixedly connected to a first cam (38). The first cam (38) works in conjunction with the rotating plates (33).

5. The sand cleaning device for coated sand casting of an air compressor rotor according to claim 4, characterized in that: A filter plate (39) is fixedly connected to the inner wall of the inlet (16). Two baffles (54) are fixedly connected symmetrically to the top of the water tank (1) with the filter plate (39) as the center. A limiting plate (40) is fixedly connected to the outer wall of the other guard plate (20). A limiting shaft (41) is slidably connected to the inner wall of the limiting plate (40). A scraper (42) is fixedly connected to the bottom of the limiting shaft (41). The bottom of the scraper (42) is in contact with the filter plate (39). The top of the scraper (42) is set as an inclined surface. Guide blocks (50) are fixedly connected to both sides of the limiting shaft (41). The guide blocks (50) are set as cylinders. A guide assembly is provided on the outer wall of the support plate (2).

6. The sand cleaning device for coated sand casting of an air compressor rotor according to claim 5, characterized in that: The guiding assembly includes two guide plates (43), which are symmetrically fixedly installed on the outer wall of the support plate (2). The scraper (42) is located between the two guide plates (43). The outer walls of both guide plates (43) are provided with a first groove (44). The outer walls of the guide plates (43) and below the first groove (44) are provided with a second groove (45). The outer walls of the guide plates (43) and between the first groove (44) and the second groove (45) are provided with a connecting groove (46). The first groove (44) and the second groove (45) are both connected to the connecting groove (46). The outer walls of the guide plates (43) are... A sloping groove (47) is provided on the side away from the connecting groove (46). The sloping groove (47) is located between the first sliding groove (44) and the second sliding groove (45). The first sliding groove (44) and the second sliding groove (45) are both connected to the sloping groove (47). A rotating shaft (48) is fixedly connected to the first sliding groove (44) of the guide plate (43). A partition plate (49) is rotatably connected to the outer wall of the rotating shaft (48). A torsion spring is sleeved on the outer wall of the rotating shaft (48) to cooperate with the partition plate (49). The partition plate (49) fits into the sloping groove (47). The height of the first sliding groove (44) and the second sliding groove (45) is greater than the diameter of the circular end face of the guide block (50).

7. An operating method for a sand cleaning device for coated sand casting of an air compressor rotor, the operating method being applicable to the sand cleaning device for coated sand casting of an air compressor rotor as described in claim 6, characterized in that: The steps for this operation are as follows: S1: Insert the end of the rotor into the sleeve (9), control several clamps (11) to clamp and fix the rotor by several hydraulic cylinders (10), start the nozzle (15) to rinse the rotor, control the rotor to rotate by the first motor (8), and control the nozzle (15) to move laterally by the linear slide (12). S2: Before rinsing the rotor, start the exhaust fan (24) and heating wire (28) to spray hot air upward through the air supply pipe (25) to heat the rotor surface above. Start the second motor (37) to drive the striking block (34) to strike the rotor surface and loosen the surface sand. S3: Start the third motor (51) and control the rotor to vibrate downwards continuously to shake off the sintered sand core at the corner of the rotor air passage. After the sand is washed away, control the rotor to vibrate downwards again to shake off the residual water from the washing process.

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