Inner wall rust removing and polishing device for valve casting machining

Abstract

The invention provides an inner wall rust removing and polishing device for valve casting machining, and relates to the technical field of metal machining, the inner wall rust removing and polishing device comprises a mounting seat frame, a U-shaped frame is further fixedly arranged at the top extending position of the mounting seat frame, and the U-shaped frame is fixed to the outer portion of a containing table; four electric cylinders A are fixedly arranged at the top of the mounting seat frame, a bearing frame is fixedly arranged at the telescopic ends of the electric cylinders A, a motor seat is slidably arranged at the top of the bearing frame in cooperation with the guide rails, a bearing seat is fixedly arranged on the right side of the top of the motor seat, and a core push shaft is rotationally arranged in the bearing seat; through a staggered water outlet structure of a built-in water path of a core push shaft and a mounting cover, accurate water spraying cooling on the inner wall of a valve casting in the grinding process is achieved, cooling water and sweeps are directionally collected and subjected to solid-liquid separation in cooperation with an anti-sputtering channel and a water receiving box with a built-in intercepting net, the temperature rise of a grinding wheel and the casting is reduced, the service life of the grinding wheel is prolonged, and the grinding efficiency is improved. Rust chips and sweeps generated by polishing are flushed, and the situation that the sweeps splash to pollute the workshop environment is avoided.

Description

Technical Field

[0001] This invention relates to the field of metal processing technology, and in particular to an internal rust removal and grinding device for valve casting processing. Background Technology

[0002] Valve castings are valve parts manufactured through a casting process. This involves melting metal into a liquid state, pouring it into a valve mold, and then cooling, solidifying, and cleaning to obtain valve components with predetermined shapes, sizes, and performance. Due to the large quantity and high cost of vacuum storage, these castings may be stored in workshops, storage boxes, or in the open air for extended periods before being sold. This can lead to contact with moisture and internal rusting. Valves that have been used for a long time and require repair may also develop internal rust. Rusty castings require grinding to remove the rust from their inner walls.

[0003] Currently used rust removal devices mainly use a moving rotary grinding structure for internal grinding. During grinding, splattered waste chips are generated, which may also adhere to the inside of the casting. Generally, the devices lack the processing function of simultaneously grinding and spraying water for cooling, and directional discharge of waste chips. In addition, the grinding model is fixed and lacks flexible adaptation function, making it inconvenient to quickly change to a suitable grinding and positioning structure according to castings of different sizes. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides an inner wall rust removal and grinding device for valve casting processing.

[0005] This invention provides an inner wall rust removal and grinding device for valve casting processing, specifically comprising: a mounting frame, the top right side of which extends upward, and a placement platform fixedly mounted on the top of the extension; a U-shaped frame fixedly mounted on the top extension of the mounting frame, the U-shaped frame being fixed to the outside of the placement platform; four sets of electric cylinders A fixedly mounted on the top of the mounting frame, a bearing frame fixedly mounted on the telescopic end of the electric cylinders A, a motor base slidably mounted on the top of the bearing frame in cooperation with a guide rail, and a bearing seat fixedly mounted on the top right side of the motor base, with a rotating component in the bearing seat. It has a core push shaft; the right end of the core push shaft is integrally equipped with a set mold, and a grinding wheel with a rounded diamond structure is set outside the set mold. A water outlet groove is opened around the right end of the core push shaft; a mounting cover is installed on the right end of the core push shaft through a threaded connection, and the mounting cover covers the right end of the core push shaft; a cover plate is slidably installed on the top right side of the motor base, and a round hole is opened above the cover plate, through which the core push shaft passes; a water inlet hole is opened around the left side of the core push shaft, and a water passage is opened inside the core push shaft to connect the water inlet hole and the water outlet groove.

[0006] Optionally, two sets of hooks are fixedly installed on the upper right side of the mounting bracket, and a water collection box is hung on the outside of the hooks. A drain pipe is connected to the bottom of the water collection box. A splash-proof channel is fixedly installed on the right end of the mounting bracket. The bottom of the splash-proof channel is an open structure, and the bottom of the splash-proof channel is located inside the upper part of the water collection box. An interception net is fixedly installed inside the lower part of the water collection box.

[0007] Optionally, the top of the placement platform is provided with two sets of sliding grooves, each with a lead screw rotatably installed in it. A control shaft is rotatably installed at the right end of the placement platform, and the control shaft is connected to the two sets of lead screws by bevel gear transmission. Clamping plates are slidably installed in the top sliding grooves of the placement platform, and the lead screws are threadedly connected to the clamping plates. A hand-rolling wheel is fixedly installed on the control shaft through the anti-splash channel.

[0008] Optionally, a guide rod is slidably provided at the top center of the U-shaped frame, a spring is sleeved on the bottom of the guide rod and a threaded post is fixedly provided thereon, a top plate is fixedly provided at the top of the guide rod, and a pull ring is integrally provided at the top of the top plate; a positioning post is fixedly provided at the bottom of the threaded post through a threaded connection, and the upper part of the positioning post has a surrounding textured structure.

[0009] Optionally, both sides of the motor base are integrally provided with downwardly curved side blocks; a connecting plate is integrally provided on the bottom right side of the motor base; an electric cylinder B is fixedly provided on the bottom left side of the support frame, and the telescopic end of the electric cylinder B is fixedly connected to the connecting plate; a guide is provided above the mounting bracket and is slidably connected to the mounting seat of the electric cylinder B; a drive motor is fixedly provided on the top of the motor base, and the shaft end of the drive motor is connected to the left end of the coupling of the core push shaft.

[0010] Optionally, the grinding wheel is fixed to the outside of the mold set by a mounting cover; the water inlet is located inside the bearing seat, and two sets of shaft seals are provided between the two sides of the bearing seat and the core push shaft for a rotary connection.

[0011] Optionally, the mounting cover has a V-shaped groove on its outside, which is aligned with the outside of the water outlet groove; ten sets of water outlet holes are opened around both sides of the V-shaped groove conical surface, and the water outlet holes outside the two sides conical surface are staggered.

[0012] Optionally, an arc-shaped channel is integrally provided on the lower left side of the through hole of the shielding plate; a mixing spray hole is opened around the through hole at the right end of the shielding plate, and a water channel is opened in the shielding plate to connect the mixing spray hole and the arc-shaped channel; two sets of spring guide rods are fixedly provided at both ends of the left side of the shielding plate, the spring guide rods are slidably connected to the side block, and springs are sleeved on the outside of the spring guide rods on the right side of the side block.

[0013] Optionally, the hole in the bearing housing is connected to the bottom of the bearing housing, and a pipe is provided at the bottom of the bearing housing to connect to solenoid valve A; a branch pipe is provided at the bottom of the arc-shaped channel to connect to solenoid valve B and solenoid valve C, and a branch pipe is provided at the bottom of solenoid valve A to connect to solenoid valve B and a water source pipe respectively; the other end of solenoid valve C is connected to an air source pipe.

[0014] The beneficial effects are as follows: Through the staggered water outlet structure of the core push shaft's built-in water channel and mounting cover, precise water spray cooling of the valve casting's inner wall is achieved during the grinding process. Combined with the anti-splash channel and the water collection box with built-in interception net, the cooling water and waste chips are collected in a directional manner and separated into solid and liquid components. This reduces the temperature rise of the grinding wheel and the casting, extends the service life of the grinding wheel, washes away rust and waste chips generated during grinding, avoids waste chips splashing and polluting the workshop environment, prevents operators from being accidentally injured by splashes, and improves the safety and cleanliness of the overall processing process.

[0015] By quickly changing the grinding wheels of different specifications by twisting the mounting cover, and with the replaceable positioning stakes and the core push shaft height adjustment function driven by the electric cylinder A, combined with the screw-driven clamping plate of the placement table and the elastic positioning stakes of the U-shaped frame, it is possible to quickly clamp and accurately position valve castings of different sizes and shapes without changing the overall tooling. This greatly improves the device's adaptability to multiple workpiece models, and can flexibly adapt to different casting models, reducing tooling change costs.

[0016] The electric cylinder B drives the motor mount to drive the core push shaft to achieve the feeding motion. Combined with the rotational power output of the drive motor, a composite drive mode of rotary grinding and linear feeding is formed to complete the uniform grinding of the inner wall of the casting. At the same time, the double shaft seal structure between the bearing seat and the core push shaft, as well as the adaptive fitting structure composed of the shielding plate and the spring guide rod, effectively form a closed space to ensure the direction of water and air transportation. Attached Figure Description

[0017] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the present invention is shown; Figure 2 A schematic diagram of an isometric structure according to an embodiment of the present invention is shown; Figure 3 A schematic diagram of the assembly structure of an embodiment of the present invention is shown; Figure 4 A three-dimensional cross-sectional view of an embodiment of the present invention is shown; Figure 5 A side-tilt sectional view of an embodiment of the present invention is shown; Figure 6 A schematic diagram of the assembly structure of the motor mount in an embodiment of the present invention is shown; Figure 7A schematic diagram of the assembly structure of the placement platform in an embodiment of the present invention is shown; Figure 8 A schematic diagram of the assembly structure of the U-shaped frame in an embodiment of the present invention is shown; Figure 9 A schematic diagram of the assembly structure of the core push shaft in an embodiment of the present invention is shown.

[0018] List of reference numerals in the attached diagram: 1. Mounting bracket; 101. Hook; 102. Water receiving box; 103. Drain pipe; 2. Placement platform; 201. Lead screw; 202. Control shaft; 203. Clamping plate; 3. U-shaped frame; 301. Guide rod; 302. Threaded post; 303. Top plate; 304. Positioning post; 4. Anti-splash channel; 5. Electric cylinder A; 6. Bearing frame; 7. Motor base; 701. Side block; 702. Connecting plate; 703. Drive motor; 70 4. Bearing housing; 8. Core push shaft; 801. Mold assembly; 802. Water inlet; 803. Water outlet groove; 804. Grinding wheel; 805. Mounting cover; 806. V-groove; 807. Water outlet; 9. Sealing plate; 901. Arc-shaped channel; 902. Mixing nozzle; 903. Spring guide rod; 10. Electric cylinder B; 11. Solenoid valve A; 12. Solenoid valve B; 13. Solenoid valve C; 14. Air supply pipe; 15. Water supply pipe. Detailed Implementation

[0019] To make the objectives, solutions, and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present invention.

[0020] Example 1: Please refer to the accompanying drawings in the instruction manual. Figures 1 to 9 As shown: This invention proposes an inner wall rust removal and grinding device for valve casting processing, comprising: a mounting bracket 1, the top right side of the mounting bracket 1 extending upwards, with a placement platform 2 fixedly mounted on the top of the extension; a U-shaped frame 3 also fixedly mounted on the top extension of the mounting bracket 1, the U-shaped frame 3 being fixed to the outside of the placement platform 2; four sets of electric cylinders A5 fixedly mounted on the top of the mounting bracket 1, a bearing frame 6 fixedly mounted on the telescopic end of the electric cylinders A5, a motor seat 7 slidably mounted on the top of the bearing frame 6 in cooperation with a guide rail, a bearing seat 704 fixedly mounted on the top right side of the motor seat 7, and a core push shaft 8 rotatably mounted in the bearing seat 704; the core push shaft 8... The right end is equipped with a mold set 801, and a grinding wheel 804 is set outside the mold set 801. The grinding wheel 804 has a rounded rhomboid structure. A water outlet groove 803 is opened around the right end of the core push shaft 8. A mounting cover 805 is connected to the right end of the core push shaft 8 by a thread. The mounting cover 805 covers the right end of the core push shaft 8. A cover plate 9 is slidably set on the top right side of the motor base 7. A round hole is opened above the cover plate 9. The core push shaft 8 passes through the round hole of the cover plate 9. A water inlet hole 802 is opened around the left side of the core push shaft 8. A water passage is opened inside the core push shaft 8 to connect the water inlet hole 802 and the water outlet groove 803.

[0021] Two sets of hooks 101 are fixedly installed on the upper right side of the mounting bracket 1. A water receiving box 102 is hung on the outside of the hooks 101. A drain pipe 103 is connected to the bottom of the water receiving box 102. A splash-proof channel 4 is fixedly installed on the right end of the mounting bracket 1. The bottom of the splash-proof channel 4 is open and located above the inside of the water receiving box 102. An interception net is fixedly installed at the bottom inside the water receiving box 102.

[0022] The top of the placement platform 2 has two sets of sliding grooves, each with a lead screw 201 rotatably mounted inside. The right end of the placement platform 2 has a control shaft 202 rotatably mounted inside, and the control shaft 202 is connected to the two sets of lead screws 201 by bevel gear transmission. Each of the top sliding grooves of the placement platform 2 has a clamping plate 203 slidably mounted inside, and the lead screw 201 is threadedly connected to the clamping plate 203. The control shaft 202 passes through the anti-splash channel 4 and is fixedly mounted with a hand-rubbing wheel.

[0023] Among them, a guide rod 301 is slidably installed in the middle of the top of the U-shaped frame 3. A spring is sleeved on the bottom of the guide rod 301 and a threaded post 302 is fixedly installed. A top plate 303 is fixedly installed on the top of the guide rod 301. A pull ring is integrally installed on the top of the top plate 303. A positioning post 304 is fixedly installed at the bottom of the threaded post 302 through a threaded connection. The upper part of the positioning post 304 has a surrounding textured structure.

[0024] The motor base 7 has two integrally formed downward-turning side blocks 701 on both sides; a connecting plate 702 is integrally formed on the bottom right side of the motor base 7; the main body of the support frame 6 is a frame structure with a through groove in the middle to facilitate the passage of pipes; an electric cylinder B10 is fixedly set on the bottom left side of the support frame 6, and the telescopic end of the electric cylinder B10 is fixedly connected to the connecting plate 702; a guide is set on the top of the mounting bracket 1 and is slidably connected to the mounting seat of the electric cylinder B10; a drive motor 703 is fixedly set on the top of the motor base 7, and the shaft end of the drive motor 703 is connected to the left end of the core push shaft 8 by a coupling.

[0025] The grinding wheel 804 is fixed to the outside of the mold set 801 by the mounting cover 805; the water inlet 802 is located inside the bearing seat 704, and two sets of shaft seals are provided between the two sides of the bearing seat 704 and the core push shaft 8 for rotary sealing.

[0026] The mounting cover 805 has a V-shaped groove 806 on its outside, which is aligned with the outside of the water outlet groove 803. Ten sets of water outlet holes 807 are opened around the two conical surfaces of the V-shaped groove 806, and the water outlet holes 807 outside the two conical surfaces are staggered. The right end of the mounting cover 805 has an internal hexagonal groove or cross groove to facilitate disassembly with appropriate tools.

[0027] Among them, an arc-shaped channel 901 is integrally provided on the lower left side of the through hole of the shielding plate 9; a mixing nozzle 902 is opened around the through hole on the right end of the shielding plate 9, and a water channel is opened in the shielding plate 9 to connect the mixing nozzle 902 and the arc-shaped channel 901; two sets of spring guide rods 903 are fixedly provided at both ends of the left side of the shielding plate 9, and the spring guide rods 903 are slidably connected to the side block 701, and springs are sleeved on the outside of the spring guide rods 903 on the right side of the side block 701.

[0028] The bearing housing 704 has a hole that is connected to the bottom of the bearing housing 704. The bottom of the bearing housing 704 is provided with a pipe connected to a solenoid valve A11. The bottom of the arc-shaped channel 901 is provided with a branch pipe connected to a solenoid valve B12 and a solenoid valve C13. The bottom of the solenoid valve A11 is provided with a branch pipe connected to a solenoid valve B12 and a water source pipe 15 respectively. The other end of the solenoid valve C13 is connected to a gas source pipe 14.

[0029] The device has an outer shell structure, and the entire device is installed inside the shell. A rotating door and control facilities are provided on the outside of the shell. An opening is provided on one side of the shell for removing the water receiving box 102 or operating the control shaft 202.

[0030] The workpiece is fixed and pulled upward by the top plate 303, and the guide rod 301 is moved to lift the threaded post 302; the casting is placed above the placement platform 2 and inserted between the two clamping plates 203; the top plate 303 is released, and the threaded post 302 automatically resets with the help of the spring on the outside of the guide rod 301 and is inserted downward into the middle hole of the casting to complete the fixation.

[0031] Grinding operation execution Start the drive motor 703 to drive the core push shaft 8 to rotate to provide grinding power; extend the electric cylinder B10 to push the core push shaft 8 to the right, insert the grinding wheel 804 into the casting for moving grinding; when the cover plate 9 moves to fit the surface of the casting, stop the displacement, and the core push shaft 8 continues to move to perform through grinding.

[0032] Cooling and splash protection When the grinding wheel 804 enters the casting, the solenoid valve A11 is turned on to supply water. The water flows through the water source pipe 15 and the solenoid valve A11 into the bearing seat 704, and then flows out from the water outlet 803 through the water inlet hole 802 and is sprayed out through the water outlet hole 807 to pre-wash and wet the inner wall of the casting, thereby achieving auxiliary grinding and heat dissipation.

[0033] After the shielding plate 9 is attached to the casting, the solenoid valves B12 and C13 are opened simultaneously. Water and air enter the arc-shaped channel 901 and mix. The mixture is then sprayed out through the mixing nozzle 902, passes through the gap between the grinding wheel 804 and the inner wall of the casting, and flows to the anti-splash channel 4. The water falls into the water collection box 102 along the channel guide. The filter screen in the water collection box 102 intercepts and collects waste debris. The filtered water is discharged through the drain pipe 103. The water collection box 102 can be removed periodically to clean the waste debris.

[0034] Single-operation reset: After completing a single grinding cycle, the equipment components are reset to their initial state.

[0035] Example 2: Replacement of fittings for different workpiece models Replace the locating pin 304 directly by unscrewing it; use tools to remove the mounting cover 805, unlock the grinding wheel 804, and replace it with a model that matches the casting to be processed.

[0036] Position calibration: retrieve the dimensional data of the selected casting, extend the electric cylinder A5 to raise the support frame 6, and adjust the height of the core push shaft 8 to ensure that the core push shaft 8 is precisely aligned with the hole position of the casting, thus preparing for subsequent grinding operations.

[0037] Example 3: Based on Example 1, the device can also grind the middle part of the casting. The middle part of the casting is positioned facing the grinding wheel 804, and the upper part of the casting is fixed by the threaded post 302. Then, the working height of the grinding wheel 804 is raised to perform grinding. The stroke of the grinding wheel 804 is set so that it moves to the middle position of the casting and stops moving.

[0038] The specific usage and function of this embodiment are as follows: In this invention, the drain pipe 103 is connected to a sewer pipe or wastewater treatment equipment; the gas source pipe 14 is connected to an air compressor or an industrial air supply system; and the water source pipe 15 is connected to tap water or a pump supply. When using, refer to Figure 1 The casting is placed in this manner; First, pull the top plate 303 upward, move the guide rod 301 to lift the threaded post 302, then place the casting above the placement platform 2 and lock it between the two side clamps 203. Then release the top plate 303, and the threaded post 302 will automatically reset through the spring outside the guide rod 301 and insert downward into the middle hole of the casting for fixation. The drive motor 703 is started to drive the core push shaft 8 to rotate, providing grinding capability. Then the electric cylinder B10 extends to push the core push shaft 8 to the right, inserting the grinding wheel 804 into the casting for moving grinding. When the cover plate 9 moves to the position that fits the casting, it stops moving, while the core push shaft 8 can continue to move to perform through grinding. During the grinding process, when the grinding wheel 804 enters the casting, the solenoid valve A11 is opened to supply water. The water passes through the water source pipe 15 and the solenoid valve A11 into the bearing seat 704, and then enters the water inlet 802 and is output from the water outlet 803. It is then sprayed out through the water outlet 807 to spray water into the inside of the casting, pre-rinsing the inside of the casting and wetting the inner wall of the casting to facilitate grinding and provide heat dissipation. When the shielding plate 9 is attached to the casting, the solenoid valves B12 and C13 are opened, and water and air enter the arc-shaped channel 901, mix and spray out through the mixing nozzle 902, spraying into the interior of the casting. Air and water are sprayed out through the gap between the grinding wheel 804 and the inner wall of the casting, move towards the anti-splash channel 4, fall down through the guide of the anti-splash channel 4, and enter the water receiving box 102. The filter screen in the water receiving box 102 provides an interception effect, intercepting and collecting the waste, and the water flows down and is discharged through the drain pipe 103. Simply remove and clean the water collection box 102 periodically. After completing one round of polishing, reposition all components. When grinding different models of workpieces, it is necessary to ensure compatibility. First, the positioning pin 304 needs to be replaced. Simply unscrew the positioning pin 304 to replace it. Then, use a tool to remove the mounting cover 805. At this time, the grinding wheel 804 is unlocked. Remove the grinding wheel 804 and replace it with a compatible model. After replacement, retrieve the dimensional data according to the selected casting model, adjust the height of the core push shaft 8, extend the electric cylinder A5 to raise the support frame 6, so that the core push shaft 8 is aligned with the casting for subsequent processing. Rotating the control shaft 202 drives the two sets of lead screws 201 to rotate, and using the lead screws 201 to drive the clamping plates 203 to move, the distance between the two sets of clamping plates 203 can be adjusted, thereby adapting to the positioning of the casting.

Claims

1. A device for rust removal and grinding of the inner wall of valve castings, characterized in that, include: Mounting bracket (1), the top right side of the mounting bracket (1) extends upward, and a placement platform (2) is fixedly installed at the top of the extension; a U-shaped frame (3) is also fixedly installed at the top extension of the mounting bracket (1), and the U-shaped frame (3) is fixed to the outside of the placement platform (2); four sets of electric cylinders A (5) are fixedly installed at the top of the mounting bracket (1), and a bearing frame (6) is fixedly installed at the telescopic end of the electric cylinders A (5); a motor seat (7) is slidably installed on the top of the bearing frame (6) in cooperation with the guide rail; a bearing seat (704) is fixedly installed on the right side of the top of the motor seat (7), and a core push shaft (8) is rotatably installed in the bearing seat (704); a set mold (8) is integrally installed on the right side of the core push shaft (8). 01), a grinding wheel (804) is provided outside the kit mold (801). The grinding wheel (804) has a rounded rhomboid structure. A water outlet groove (803) is provided around the right end of the core push shaft (8). A mounting cover (805) is provided at the right end of the core push shaft (8) by a threaded connection. The mounting cover (805) covers the right end of the core push shaft (8). A cover plate (9) is slidably provided on the top right side of the motor base (7). A round hole is provided above the cover plate (9). The core push shaft (8) passes through the round hole of the cover plate (9). A water inlet hole (802) is provided around the left side of the core push shaft (8). A water passage is provided inside the core push shaft (8) to connect the water inlet hole (802) and the water outlet groove (803).

2. The valve casting machining inner wall rust removal and grinding device as described in claim 1, characterized in that, Two sets of hooks (101) are fixedly installed on the upper right side of the mounting bracket (1). A water receiving box (102) is hung on the outside of the hooks (101). A drain pipe (103) is connected to the bottom of the water receiving box (102). A splash-proof channel (4) is fixedly installed on the right end of the mounting bracket (1). The bottom of the splash-proof channel (4) is an open structure. The bottom of the splash-proof channel (4) is located above the inside of the water receiving box (102). An intercepting net is fixedly installed below the inside of the water receiving box (102).

3. The valve casting machining inner wall rust removal and grinding device as described in claim 1, characterized in that, The top of the placement platform (2) is provided with two sets of sliding grooves, and a lead screw (201) is rotatably installed in each of the sliding grooves. A control shaft (202) is rotatably installed at the right end of the placement platform (2). The control shaft (202) is connected to the two sets of lead screws (201) by bevel gear transmission. A clamping plate (203) is slidably installed in the top sliding groove of the placement platform (2). The lead screw (201) is threadedly connected to the clamping plate (203). A hand-rubbing wheel is fixedly installed through the anti-splash channel (4) of the control shaft (202).

4. The valve casting machining inner wall rust removal and grinding device as described in claim 1, characterized in that, A guide rod (301) is slidably provided at the top center of the U-shaped frame (3). A spring is sleeved on the bottom of the guide rod (301) and a threaded post (302) is fixedly provided. A top piece (303) is fixedly provided on the top of the guide rod (301), and a pull ring is integrally provided on the top of the top piece (303). A positioning post (304) is fixedly provided at the bottom of the threaded post (302) through a threaded connection. The upper part of the positioning post (304) has a surrounding textured structure.

5. The valve casting machining inner wall rust removal and grinding device as described in claim 1, characterized in that, Both sides of the motor base (7) are integrally provided with downward-turning side blocks (701); the bottom right side of the motor base (7) is integrally provided with a connecting plate (702); the bottom left side of the support frame (6) is fixedly provided with an electric cylinder B (10), and the telescopic end of the electric cylinder B (10) is fixedly connected to the connecting plate (702); the upper part of the mounting bracket (1) is provided with a guide and is slidably connected to the mounting seat of the electric cylinder B (10); the top of the motor base (7) is fixedly provided with a drive motor (703), and the shaft end of the drive motor (703) is connected to the left end of the core push shaft (8) by a coupling.

6. The valve casting machining inner wall rust removal and grinding device as described in claim 1, characterized in that, The grinding wheel (804) is fixed to the outside of the mold (801) by the mounting cover (805); the water inlet (802) is located inside the bearing seat (704), and two sets of shaft seals are provided between the two sides of the bearing seat (704) and the core push shaft (8) for rotary connection.

7. The valve casting machining inner wall rust removal and grinding device as described in claim 1, characterized in that, The mounting cover (805) has a V-shaped groove (806) on its outside, which is aligned with the outside of the water outlet groove (803). Ten sets of water outlet holes (807) are opened around the two conical surfaces of the V-shaped groove (806), and the water outlet holes (807) outside the two conical surfaces are staggered.

8. The valve casting machining inner wall rust removal and grinding device as described in claim 5, characterized in that, An arc-shaped channel (901) is integrally provided on the lower left side of the through hole of the shielding plate (9); a mixing nozzle (902) is provided around the through hole on the right end of the shielding plate (9), and a water channel is provided in the shielding plate (9) to connect the mixing nozzle (902) and the arc-shaped channel (901); two sets of spring guide rods (903) are fixedly provided at both ends of the left side of the shielding plate (9), and the spring guide rods (903) are slidably connected to the side block (701), and springs are sleeved on the outside of the spring guide rods (903) on the right side of the side block (701).

9. The valve casting machining inner wall rust removal and grinding device as described in claim 8, characterized in that, The hole of the bearing housing (704) is connected to the bottom of the bearing housing (704). A pipe is provided at the bottom of the bearing housing (704) to connect to the solenoid valve A (11). A branch pipe is provided at the bottom of the arc-shaped channel (901) to connect to the solenoid valve B (12) and the solenoid valve C (13). A branch pipe is provided at the bottom of the solenoid valve A (11) to connect to the solenoid valve B (12) and the water source pipe (15) respectively. The other end of the solenoid valve C (13) is connected to the air source pipe (14).

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