Valve casting grinding device

Abstract

The invention belongs to the technical field of casting parts, and discloses a valve casting part grinding device which comprises a rust removal box and a cover plate. A grinding structure is arranged on one side of the rust removal box, and a clamping structure is arranged in the rust removal box; the grinding structure comprises a grinding platform, a fixing plate, a bidirectional screw rod, a screw block, a sliding rod, a fixing belt, a grinding disc, a first servo motor, a belt wheel and a second servo motor. The clamping structure comprises an air cylinder, a moving block, a U-shaped plate, a clamping wheel, a supporting rod, a connecting groove and a connecting block. According to the valve casting part rust removal device, all-directional treatment can be conducted on valve casting parts, through the reasonable structural design, the operations of clamping, rust removal, cleaning, baking and the like of the casting parts are achieved in the rust removal box, the working efficiency is improved, the trouble caused by transferring of workpieces among different devices is reduced, and actual application and operation are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of castings, in particular to a valve casting grinding device. Background Art

[0002] The method of pouring liquid metal into a casting cavity that is adapted to the shape of the part and waiting for it to cool and solidify to obtain a part or blank is called casting. The casting obtained by the casting method is called a casting. The casting structure design ensures its working performance and mechanical performance requirements, considers the casting process and the requirements of the alloy casting performance on the casting structure, and whether the casting structure design is reasonable has a great impact on the quality, productivity and cost of the casting.

[0003] In the actual application of existing equipment, in the traditional valve casting processing process, rust removal, cleaning, baking and polishing processes are often carried out on different equipment. The casting may be rust-removed in a rust removal device first, then transferred to a cleaning device for cleaning, then placed in a baking device for drying, and finally taken to a polishing device for polishing. This scattered process leads to a lot of time wasted on the transportation of workpieces and the adjustment of equipment, which reduces production efficiency, increases labor costs, and is not conducive to actual application and operation. Summary of the invention

[0004] One of the objects of the present invention is to provide a valve casting grinding device.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: a valve casting grinding device, comprising a rust removal box and a cover plate: a grinding structure is provided on one side of the rust removal box, and a clamping structure is provided inside the rust removal box;

[0006] The grinding structure includes a grinding platform, a fixed plate, a bidirectional screw, a screw block, a sliding rod, a fixed belt, a grinding disc, a first servo motor, a pulley, and a second servo motor; the clamping structure includes a cylinder, a moving block, a U-shaped plate, a clamping wheel, a support rod, a connecting groove, and a connecting block;

[0007] Two ultrasonic transducers are installed and connected on both sides of the inner wall of the rust removal box, and cylinders are fixedly connected to both sides of the rust removal box at equal distances, and the piston rods of the cylinders extend into the interior of the rust removal box and are fixedly connected to moving blocks, and the moving blocks are fixedly connected to connecting blocks on the side away from the cylinders, and connecting grooves are provided on the outer sides of the U-shaped plates, and the connecting blocks are rotatably connected to the connecting grooves, and the U-shaped plates are rotatably connected to clamping wheels on the side away from the connecting blocks, and support rods are fixedly connected to the bottoms of the moving blocks at equal distances, and the corresponding support rods are inserted and connected, so that valve castings can be processed in all directions, and through reasonable structural design, operations such as clamping, rust removal, cleaning and baking of castings are realized in the rust removal box, which improves work efficiency and reduces the trouble caused by transferring workpieces between different equipment.

[0008] Preferably, a grinding platform is fixedly connected to the outside of the rust removal box and located above the cylinder, the bottom of the grinding platform is fixedly connected to a supporting column, the top of the grinding platform is fixedly connected to two fixing plates, two bidirectional screws are rotatably connected between the two fixing plates, the outsides of the bidirectional screws are threadedly connected to two screw blocks, a fixing belt is fixedly connected between the corresponding two screw blocks, a sliding rod is fixedly connected between the two fixing plates and located below the bidirectional screw, the screw blocks are slidably connected to the corresponding sliding rods, and a grinding disc is rotatably connected to the top of the grinding platform. The grinding structure can flexibly adjust the position of the fixing belt through the cooperation of the bidirectional screw and the sliding rod to adapt to castings of different sizes, and the grinding disc driven by the first servo motor can efficiently grind the castings, thereby ensuring the grinding quality.

[0009] Preferably, two first empty slots are provided inside the rust removal box and below the support rod, and stirring impellers are installed inside the first empty slots. First connecting slots are equidistantly provided at the bottom of the inner wall of the rust removal box, and the first connecting slots are communicated with the corresponding first empty slots. A filling Y-shaped pipe is fixedly connected to one side of the rust removal box, and a discharge Y-shaped pipe is fixedly connected to the side of the rust removal box away from the filling Y-shaped pipe and below the support rod, so that chemical rust removal and clean water cleaning operations can be conveniently performed. The setting of the stirring impeller can make the clean water flow fully in the box, ensuring that the castings are cleaned and improving the cleaning effect.

[0010] Preferably, the top of the rust removal box is provided with two T-slots, the bottom of the cover plate is fixedly connected with two T-blocks, the T-blocks are slidably connected to the T-slots, a sealing groove is provided on the top of the rust removal box and on one side of the T-slot, the bottom of the cover plate is fixedly connected with two first sealing strips, the first sealing strips are slidably connected to the sealing groove, and the bottom of the cover plate is fixedly connected with a second sealing strip between the two first sealing strips. The sealing structure can effectively prevent leakage of chemical liquids and cleaning water, thereby ensuring a stable working environment in the rust removal box, while also ensuring the safety of operators and preventing injuries caused by overflow of chemical liquids.

[0011] Preferably, the top of the rust removal box is fixedly connected with an L-block, the top of the L-block is provided with a slot, and one side of the cover plate is provided with a groove, the top of the cover plate is slidably connected with a card column, the bottom of the card column extends to the inside of the groove and is used in conjunction with the card slot, the top of the card column is fixedly connected with a connecting plate, the top of the connecting plate and both sides of the card column are slidably connected with connecting rods, the bottoms of the connecting rods pass through the connecting plate and are fixedly connected to the cover plate, the top of the connecting rods are fixedly connected to limited blocks, and springs are fixedly connected between the connecting plate and the cover plate and on the outside of the connecting rods. The clamping structure facilitates the installation and disassembly of the cover plate, and at the same time, the setting of the spring can ensure the close fit between the card column and the card slot, ensure that the cover plate will not loosen during work, and ensure the sealing and stability of the equipment.

[0012] Preferably, a second empty groove is opened inside the cover plate, and a baking tube is installed and connected inside the second empty groove. Second connecting grooves are opened at equal intervals on the bottom of the cover plate, and the second connecting grooves are connected to the inside of the second empty groove. The baking tube can bake the casting in time after cleaning to remove moisture and prevent rust. Moreover, the design of the baking tube inside the cover plate saves space and makes the equipment structure more compact.

[0013] Preferably, a handle is fixedly connected to the top of the cover plate, and an exhaust pipe is fixedly connected to the top of the cover plate and on one side of the handle. The outer sides of the exhaust pipe, the filling Y-shaped tube and the discharge Y-shaped tube are all installed with solenoid valves. The handle facilitates operation, and the exhaust pipe can ensure the smooth discharge of gas during baking. The setting of the solenoid valve can accurately control the flow of chemical liquids, clean water and gas, thereby improving the degree of automation of the equipment and the convenience of operation.

[0014] Preferably, a connecting piece is fixedly connected between the corresponding cylinders, a pressure gauge is fixedly installed on one end of the connecting piece, and an air intake pipe is fixedly connected to one side of the connecting piece. The setting of the pressure gauge can monitor the working pressure of the cylinder in real time to ensure that the clamping structure can stably clamp the casting and prevent unstable clamping or damage to the casting due to insufficient or excessive air pressure.

[0015] Preferably, a first servo motor is fixedly connected to the bottom of the grinding platform, and the output shaft of the first servo motor is fixedly connected to the grinding disc, one end of the two bidirectional screws passes through the fixed plate and a pulley is installed and connected therebetween, a second servo motor is fixedly connected to the outer side of one of the fixed plates, and the output shaft of the second servo motor is fixedly connected to one of the bidirectional screws, and two support columns are fixedly connected to the bottom of the grinding platform, and the grinding disc is made of a flexible sponge grinding disc, and the cooperation of the first servo motor and the second servo motor can accurately control the rotation of the grinding disc and the movement of the fixed belt, and the flexible sponge grinding disc can adapt to the surfaces of castings of different shapes, thereby improving the grinding effect and reducing damage to the surface of the casting.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The present invention performs all-round processing on valve castings and realizes operations such as clamping, rust removal, cleaning and baking of castings in a rust removal box through reasonable structural design, thereby improving work efficiency and reducing the trouble caused by transferring workpieces between different equipment. Through the cooperation of the bidirectional screw and the sliding rod, the position of the fixing belt can be flexibly adjusted to adapt to castings of different sizes, and the grinding disc driven by the first servo motor can efficiently grind the castings to ensure the grinding quality. At the same time, it is convenient to perform chemical rust removal and clean water cleaning operations. The setting of the stirring impeller can make the clean water flow fully in the box to ensure that the castings are cleaned and the cleaning effect is improved.

[0018] (2) The present invention can effectively prevent the leakage of chemical liquid and cleaning water through the sealing structure, thereby ensuring the stability of the working environment in the rust removal box, and at the same time ensuring the safety of the operators and preventing the chemical liquid from overflowing and causing harm. The clamping structure facilitates the installation and disassembly of the cover plate. At the same time, the setting of the spring can ensure the close fit between the clamping column and the clamping slot, ensuring that the cover plate will not loosen during operation, thereby ensuring the sealing and stability of the equipment. The baking tube can bake the casting in time after cleaning to remove moisture and prevent rust. In addition, the design of the baking tube in the cover plate saves space and makes the equipment structure more compact. The handle facilitates operation. The exhaust pipe can ensure the smooth discharge of gas during the baking process. The setting of the solenoid valve can accurately control the flow of chemical liquid, clean water and gas, thereby improving the automation degree of the equipment and the convenience of operation. The cooperation of the first servo motor and the second servo motor can accurately control the rotation of the grinding disc and the movement of the fixing belt. The flexible sponge grinding disc can adapt to the surfaces of castings of different shapes, improve the grinding effect, and reduce damage to the surfaces of castings.

[0019] (3) The present invention can monitor the working pressure of the cylinder in real time by setting a pressure gauge, thereby ensuring that the clamping structure can stably clamp the casting and preventing unstable clamping or damage to the casting due to insufficient or excessive air pressure. The cooperation of the first servo motor and the second servo motor can accurately control the rotation of the grinding disc and the movement of the fixed belt. The flexible sponge grinding disc can adapt to the surfaces of castings of different shapes, thereby improving the grinding effect and reducing damage to the surface of the casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the cross-section top view of the rust removal box of the present invention.

[0022] Figure 3 It is a schematic diagram of the cross-section front view of the rust removal box of the present invention.

[0023] Figure 4 It is a bottom view structural schematic diagram of the present invention.

[0024] Figure 5 It is a schematic diagram of the main structure of the present invention.

[0025] Figure 6 It is a schematic diagram of the cross-section structure of the rust removal box of the present invention when viewed from above.

[0026] Figure 7 It is a schematic diagram of the cross-sectional side view of the rust removal box of the present invention.

[0027] Figure 8 For the present invention Figure 7 Enlarged structural diagram at A in the middle.

[0028] In the figure: 1. Rust removal box; 2. Grinding platform; 3. Fixed plate; 4. Bidirectional screw; 5. Screw block; 6. Sliding rod; 7. Fixed belt; 8. Grinding disc; 9. First servo motor; 10. Pulley; 11. Second servo motor; 12. Cylinder; 13. Moving block; 14. U-shaped plate; 15. Clamping wheel; 16. Support rod; 17. Connecting groove; 18. Connecting block; 19. Filling Y-shaped pipe; 20. Solenoid valve; 21. Discharge Y-shaped pipe; 22. Ultrasonic transducer; 23. First empty slot; 24. Stirring Impeller; 25. Connecting piece; 26. Air inlet pipe; 27. Pressure gauge; 28. T-slot; 29. ​​Cover plate; 30. T-block; 31. First sealing strip; 32. Second sealing strip; 33. Sealing groove; 34. L-block; 35. Slot; 36. Groove; 37. Column; 38. Connecting plate; 39. Connecting rod; 40. Spring; 41. Limiting block; 42. Handle; 43. Exhaust pipe; 44. Baking tube; 45. First connecting groove; 46. Second connecting groove; 47. Support column; 48. Second empty groove. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0030] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present invention.

[0031] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0032] One of the preferred embodiments of the present invention is as follows Figures 1 to 8 As shown, a valve casting grinding device comprises a rust removal box 1 and a cover plate 29: a grinding structure is provided on one side of the rust removal box 1, and a clamping structure is provided inside the rust removal box 1;

[0033] The grinding structure includes a grinding platform 2, a fixed plate 3, a bidirectional screw 4, a screw block 5, a sliding rod 6, a fixed belt 7, a grinding disc 8, a first servo motor 9, a pulley 10, and a second servo motor 11. The clamping structure includes a cylinder 12, a moving block 13, a U-shaped plate 14, a clamping wheel 15, a support rod 16, a connecting groove 17, and a connecting block 18.

[0034] Two ultrasonic transducers 22 are installed and connected on both sides of the inner wall of the rust removal box 1, and the cylinders 12 are fixedly connected to both sides of the rust removal box 1 at equal distances. The piston rods of the cylinders 12 extend into the interior of the rust removal box 1 and are fixedly connected to the moving blocks 13. The moving blocks 13 are fixedly connected to the connecting blocks 18 on the side away from the cylinders 12. The outer sides of the U-shaped plates 14 are provided with connecting grooves 17, and the connecting blocks 18 are rotatably connected to the connecting grooves 17. The side of the U-shaped plates 14 away from the connecting blocks 18 is rotatably connected to the clamping wheels 15, and the bottoms of the moving blocks 13 are fixedly connected to the supporting rods 16 at equal distances, and the corresponding supporting rods 16 are interlaced and connected.

[0035] A grinding platform 2 is fixedly connected to the outside of the rust removal box 1 and located above the cylinder 12, a support column 47 is fixedly connected to the bottom of the grinding platform 2, two fixed plates 3 are fixedly connected to the top of the grinding platform 2, two bidirectional screws 4 are rotatably connected between the two fixed plates 3, two screw blocks 5 are threadedly connected to the outside of the bidirectional screw 4, a fixing belt 7 is fixedly connected between the two corresponding screw blocks 5, sliding rods 6 are fixedly connected between the two fixed plates 3 and located below the bidirectional screw 4, the screw blocks 5 are slidably connected to the corresponding sliding rods 6, and a grinding disc 8 is rotatably connected to the top of the grinding platform 2.

[0036] Two first empty slots 23 are provided inside the rust removal box 1 and below the support rod 16, and stirring impellers 24 are installed and connected inside the first empty slots 23. First connecting slots 45 are equidistantly provided at the bottom of the inner wall of the rust removal box 1, and the first connecting slots 45 are communicated with the corresponding first empty slots 23. A filling Y-shaped pipe 19 is fixedly connected to one side of the rust removal box 1, and a discharge Y-shaped pipe 21 is fixedly connected to the side of the rust removal box 1 away from the filling Y-shaped pipe 19 and below the support rod 16.

[0037] Two T-slots 28 are provided at the top of the rust removal box 1, and two T-blocks 30 are fixedly connected to the bottom of the cover plate 29, and the T-blocks 30 are slidably connected to the T-slots 28. A sealing groove 33 is provided at the top of the rust removal box 1 and on one side of the T-slot 28, and two first sealing strips 31 are fixedly connected to the bottom of the cover plate 29, and the first sealing strips 31 are slidably connected to the sealing groove 33, and a second sealing strip 32 is fixedly connected to the bottom of the cover plate 29 and located between the two first sealing strips 31.

[0038] An L-block 34 is fixedly connected to the top of the rust removal box 1, a slot 35 is provided on the top of the L-block 34, a groove 36 is provided on one side of the cover plate 29, a post 37 is slidably connected to the top of the cover plate 29, the bottom of the post 37 extends to the inside of the groove 36 and is used in conjunction with the slot 35, a connecting plate 38 is fixedly connected to the top of the post 37, a connecting rod 39 is slidably connected to the top of the connecting plate 38 and on both sides of the post 37, the bottom of the connecting rod 39 passes through the connecting plate 38 and is fixedly connected to the cover plate 29, the top of the connecting rod 39 is fixedly connected to a limiting block 41, and a spring 40 is fixedly connected between the connecting plate 38 and the cover plate 29 and on the outside of the connecting rod 39.

[0039] A second slot 48 is formed inside the cover plate 29 , and a baking tube 44 is installed and connected inside the second slot 48 . Second connecting slots 46 are formed at equal intervals at the bottom of the cover plate 29 , and the second connecting slots 46 are connected to the inside of the second slot 48 .

[0040] A handle 42 is fixedly connected to the top of the cover plate 29, an exhaust pipe 43 is fixedly connected to the top of the cover plate 29 and on one side of the handle 42, and the outer sides of the exhaust pipe 43, the filling Y-shaped pipe 19 and the discharge Y-shaped pipe 21 are all installed with a solenoid valve 20.

[0041] A connector 25 is fixedly connected between the corresponding cylinders 12 , a pressure gauge 27 is fixedly installed at one end of the connector 25 , and an air intake pipe 26 is fixedly connected to one side of the connector 25 .

[0042] The bottom of the grinding platform 2 is fixedly connected with a first servo motor 9, the output shaft of the first servo motor 9 is fixedly connected to the grinding disc 8, one end of the two bidirectional screws 4 passes through the fixed plate 3 and a pulley 10 is installed and connected between them, the outer side of one of the fixed plates 3 is fixedly connected with a second servo motor 11, the output shaft of the second servo motor 11 is fixedly connected to one of the bidirectional screws 4, the bottom of the grinding platform 2 is fixedly connected with two support columns 47, and the grinding disc 8 is made of a flexible sponge grinding disc

[0043] Working principle:

[0044] During use, when the device starts to work, the cylinder 12 is started first. The piston rod of the cylinder 12 will push the moving block 13 to move inside the rust removal box 1. Since the bottom of the moving block 13 is evenly and fixedly connected with the support rods 16, and the corresponding support rods 16 are interlaced and connected, the stability of the moving block 13 during movement can be ensured. The side of the moving block 13 away from the cylinder 12 is fixedly connected with the connecting block 18, and these connecting blocks 18 are rotatably connected with the connecting groove 17 opened on the outside of the U-shaped plate 14. When the moving block 13 moves, it will drive the U-shaped plate 14 to move. The side of the U-shaped plate 14 away from the connecting block 18 is rotatably connected with the clamping wheel 15. The clamping wheel 15 will approach the casting as the U-shaped plate 14 moves, and finally clamp the casting. After the casting is clamped, the ultrasonic transducers 22 installed and connected on both sides of the inner wall of the rust removal box 1 start to work. The ultrasonic transducer 22 will generate high-frequency vibrations, which will propagate in the chemical liquid in the rust removal box 1 to form a cavitation effect;

[0045] When the casting is polished, the second servo motor 11 is started, and its output shaft is fixedly connected to one of the two-way screws 4, which will drive the two-way screw 4 to rotate. Since a pulley 10 is installed and connected between the two two-way screws 4, when one two-way screw 4 rotates, the other two-way screw 4 will also rotate synchronously. When the two-way screw 4 rotates, the screw block 5 connected to its outer thread will move under the guidance of the slide bar 6. The slide bar 6 is located between the two fixed plates 3 and below the two-way screw 4, which plays a role in stabilizing the moving direction of the screw block 5. A fixed belt 7 is fixedly connected between the two corresponding screw blocks 5. As the screw block 5 moves, the fixed belt 7 can adjust its position to fix the casting. At the same time, the first servo motor 9 fixedly connected to the bottom of the polishing platform 2 is started, and its output shaft is fixedly connected to the polishing disc 8, which will drive the polishing disc 8 to rotate. The polishing disc 8 is made of a flexible sponge grinding disc, which can fit the surface of the casting well. After the fixed belt 7 fixes the casting, the rotating polishing disc 8 can perform a polishing operation on the casting.

[0046] The above describes 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 above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention to be protected. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A valve casting grinding device, characterized in that: It comprises a rust removal box (1) and a cover plate (29): a grinding structure is provided on one side of the rust removal box (1), and a clamping structure is provided inside the rust removal box (1); The grinding structure comprises a grinding platform (2), a fixed plate (3), a bidirectional screw (4), a screw block (5), a sliding rod (6), a fixed belt (7), a grinding disc (8), a first servo motor (9), a pulley (10), and a second servo motor (11); the clamping structure comprises a cylinder (12), a moving block (13), a U-shaped plate (14), a clamping wheel (15), a support rod (16), a connecting groove (17), and a connecting block (18); Two ultrasonic transducers (22) are installed and connected on both sides of the inner wall of the rust removal box (1); both sides of the rust removal box (1) are equidistantly fixedly connected to cylinders (12); piston rods of the cylinders (12) extend into the interior of the rust removal box (1) and are fixedly connected to moving blocks (13); the moving blocks (13) are fixedly connected to connecting blocks (18) on the side away from the cylinders (12); connecting grooves (17) are provided on the outer sides of the U-shaped plates (14); the connecting blocks (18) are rotatably connected to the connecting grooves (17); the U-shaped plates (14) are rotatably connected to clamping wheels (15) on the side away from the connecting blocks (18); the bottoms of the moving blocks (13) are equidistantly fixedly connected to support rods (16); and the corresponding support rods (16) are interlaced with each other.

2. A valve casting grinding device as claimed in claim 1, characterized in that: A grinding platform (2) is fixedly connected to the outside of the rust removal box (1) and located above the cylinder (12); a support column (47) is fixedly connected to the bottom of the grinding platform (2); two fixed plates (3) are fixedly connected to the top of the grinding platform (2); two bidirectional screws (4) are rotatably connected between the two fixed plates (3); two screw blocks (5) are threadedly connected to the outside of the bidirectional screw (4); a fixing belt (7) is fixedly connected between the two corresponding screw blocks (5); a sliding rod (6) is fixedly connected between the two fixed plates (3) and located below the bidirectional screw (4); the screw blocks (5) are slidably connected to the corresponding sliding rods (6); and a grinding disc (8) is rotatably connected to the top of the grinding platform (2).

3. A valve casting grinding device as claimed in claim 1, characterized in that: Two first empty slots (23) are provided inside the rust removal box (1) and below the support rod (16), and stirring impellers (24) are installed and connected inside the first empty slots (23). First connecting slots (45) are provided at equal intervals on the bottom of the inner wall of the rust removal box (1), and the first connecting slots (45) are communicated with the inside of the corresponding first empty slots (23). A filling Y-shaped pipe (19) is fixedly connected to one side of the rust removal box (1), and a discharge Y-shaped pipe (21) is fixedly connected to the side of the rust removal box (1) away from the filling Y-shaped pipe (19) and below the support rod (16).

4. A valve casting grinding device as claimed in claim 1, characterized in that: The top of the rust removal box (1) is provided with two T-shaped slots (28); the bottom of the cover plate (29) is fixedly connected with two T-shaped blocks (30); the T-shaped blocks (30) are slidably connected to the T-shaped slots (28); the top of the rust removal box (1) and one side of the T-shaped slots (28) are provided with sealing slots (33); the bottom of the cover plate (29) is fixedly connected with two first sealing strips (31); the first sealing strips (31) are slidably connected to the sealing slots (33); and the bottom of the cover plate (29) is fixedly connected with a second sealing strip (32) located between the two first sealing strips (31).

5. A valve casting grinding device as claimed in claim 1, characterized in that: The top of the rust removal box (1) is fixedly connected to an L-block (34), the top of the L-block (34) is provided with a slot (35), one side of the cover plate (29) is provided with a groove (36), the top of the cover plate (29) is slidably connected to a clamping column (37), the bottom of the clamping column (37) extends to the inside of the groove (36) and is used in conjunction with the slot (35), the top of the clamping column (37) is fixedly connected to a connecting plate (38), the top of the connecting plate (38) and both sides of the clamping column (37) are slidably connected to connecting rods (39), the bottoms of the connecting rods (39) penetrate the connecting plate (38) and are fixedly connected to the cover plate (29), the top of the connecting rods (39) are fixedly connected to a limiting block (41), and a spring (40) is fixedly connected between the connecting plate (38) and the cover plate (29) and on the outside of the connecting rod (39).

6. A valve casting grinding device as claimed in claim 1, characterized in that: The cover plate (29) has a second empty slot (48) formed inside, a baking tube (44) is installed and connected inside the second empty slot (48), and the bottom of the cover plate (29) has second connecting slots (46) formed at equal intervals, the second connecting slots (46) are in communication with the inside of the second empty slot (48).

7. A valve casting grinding device as claimed in claim 3, characterized in that: A handle (42) is fixedly connected to the top of the cover plate (29), an exhaust pipe (43) is fixedly connected to the top of the cover plate (29) and located on one side of the handle (42), and solenoid valves (20) are installed and connected to the outer sides of the exhaust pipe (43), the filling Y-shaped pipe (19) and the discharge Y-shaped pipe (21).

8. A valve casting grinding device as claimed in claim 1, characterized in that: A connecting piece (25) is fixedly connected between the corresponding cylinders (12), a pressure gauge (27) is fixedly installed on one end of the connecting piece (25), and an air intake pipe (26) is fixedly connected to one side of the connecting piece (25).

9. A valve casting grinding device as claimed in claim 1, characterized in that: A first servo motor (9) is fixedly connected to the bottom of the grinding platform (2), and the output shaft of the first servo motor (9) is fixedly connected to the grinding disc (8). One end of each of the two bidirectional screws (4) passes through the fixed plate (3) and a pulley (10) is installed and connected therebetween. A second servo motor (11) is fixedly connected to the outer side of one of the fixed plates (3), and the output shaft of the second servo motor (11) is fixedly connected to one of the bidirectional screws (4). Two support columns (47) are fixedly connected to the bottom of the grinding platform (2), and the grinding disc (8) is made of a flexible sponge grinding disc.

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