A grinding equipment and grinding method for the inner wall of a ship check valve.

Abstract

This invention relates to the field of marine check valve manufacturing technology, specifically disclosing an inner wall grinding device and grinding method for marine check valve manufacturing. The device includes a base, an adjustment mechanism fixedly installed on the rear top of the base, a clamping mechanism fixedly installed on the front top of the base, and a polishing mechanism fixedly installed on the moving end of the adjustment mechanism. During application, this technical solution, by setting up a flexibly adjustable polishing mechanism, a highly adaptable clamping mechanism, and a position adjustment mechanism, allows the polishing module to adapt to check valves of different inner diameters simply by rotating the adjustment handle. The V-shaped clamping plate can fix check valves of different diameters without changing the clamps. The position adjustment mechanism can quickly complete the alignment of the polishing mechanism, thereby achieving the effect of flexible adaptation to check valves of different specifications throughout the entire process. This solves the problems of difficult polishing structure adjustment, poor clamping adaptation, and cumbersome alignment in the prior art, leading to low production efficiency.

Description

Technical Field

[0001] This invention relates to the field of marine check valve manufacturing technology, and in particular to an internal wall grinding equipment and grinding method for marine check valve manufacturing. Background Technology

[0002] In the shipbuilding industry, check valves are crucial components that ensure unidirectional flow of media in ship pipeline systems and prevent backflow that could lead to equipment malfunctions and safety hazards. The smoothness of their inner walls directly affects the valve's flow capacity, sealing performance, and service life. This is especially true for large ship check valves, which operate in complex environments with seawater, fuel oil, and steam. If the inner walls have rough protrusions, burrs, or machining residues, it will not only increase the resistance to media flow but may also cause localized media accumulation and corrosion, leading to valve jamming, leakage, and other problems. This seriously threatens the safety and reliability of ship navigation. Therefore, precise and efficient grinding and polishing of the inner walls of ship check valves is an indispensable core process in their manufacturing.

[0003] However, in the actual production process of polishing the inner wall of ship check valves, the existing technology has many defects and deficiencies that urgently need to be addressed. It is difficult to meet the high standards of processing efficiency and quality required by industrial production. The most prominent problem is that the existing polishing structure is seriously inflexible and cannot adapt to the polishing needs of the inner wall of large ship check valves with different diameters. Since large ship check valves need to be customized according to specific parameters such as the pipe diameter, medium flow rate, and pressure level of the ship's pipeline system, the diameters are highly diverse, ranging from hundreds of millimeters to several meters. However, the existing polishing equipment or tooling structure mostly adopts a fixed polishing component design. The extension range, polishing angle, and overall working radius of the polishing head are often preset and cannot be adjusted, or can only be adjusted slightly. When polishing the inner wall of check valves with different diameters, if the diameter does not match the preset working range of the polishing structure, the operator needs to disassemble and reassemble the entire equipment, or replace it with polishing components and tooling fixtures of appropriate specifications.

[0004] This process not only consumes a significant amount of manpower and time, but also may result in inconsistent polishing of the check valve's inner wall due to precision deviations in component replacement and debugging, thus affecting the overall performance of the valve. Furthermore, existing polishing technologies suffer from low processing efficiency when grinding the inner walls of large ship check valves. Because flexible adaptation and adjustment are not possible, separate processing procedures are often required for different check valve specifications, making it difficult to establish a standardized and continuous production operation mode. This leads to extended production cycles, failing to meet the shipbuilding industry's demand for rapid component delivery. Repeated equipment debugging and component replacement increase equipment wear and tear, raise production costs, and reduce enterprise productivity. In summary, the current problems of poor adaptability and low processing efficiency caused by insufficient flexibility in polishing structure adjustment have become key bottlenecks restricting the improvement of the quality and efficiency of ship check valve manufacturing. There is an urgent need to develop new technologies that can flexibly adjust and adapt to the grinding of the inner walls of check valves of different diameters to overcome existing technological limitations and promote the upgrading and optimization of ship check valve manufacturing processes. Summary of the Invention

[0005] The purpose of this invention is to provide an inner wall grinding device and grinding method for manufacturing ship check valves, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides an inner wall grinding device and grinding method for manufacturing ship check valves, comprising a base, an adjustment mechanism fixedly installed on the rear top side of the base, a clamping mechanism fixedly installed on the front top side of the base, and a polishing mechanism fixedly installed on the moving end of the adjustment mechanism.

[0007] The polishing mechanism includes a mounting frame, which is fixedly installed at the bottom of the moving end of the adjustment mechanism. A first motor is fixedly installed inside the mounting frame. A telescopic module is fixedly installed through the bottom output end of the first motor. A polishing module is installed on the outside of the telescopic module. An adjustment module is installed at the bottom of the telescopic module. The top of the adjustment module is connected to the telescopic module in a transmission manner.

[0008] Furthermore, the adjustment mechanism includes a mounting frame, which is fixedly installed on the top rear side of the base. A top rail is fixedly installed on the top of the mounting frame. A second motor is fixedly installed at one end of the top rail. A ball screw is fixedly installed at the output end of the second motor. The ball screw is rotatably connected to the inside of the top rail. A slider is threadedly connected to the outer surface of the ball screw. The slider is slidably connected to the inside of the guide rail. A height adjustment module is fixedly installed on the outer side of the slider. The mounting frame is fixedly installed at the bottom of the height adjustment module.

[0009] Furthermore, the height adjustment module includes a connecting frame, which is fixedly installed on the outer end of the slider. A first electric push rod is fixedly installed on the outer end of the connecting frame, and the output end of the first electric push rod passes through the connecting frame and is fixedly connected to the top of the mounting frame.

[0010] Furthermore, a support groove is provided on the back of the top rail, a support block is slidably connected inside the support groove, a support arm is fixedly installed on the outside of the support block, and the outer end of the support arm is fixedly connected to the outside of the connecting frame.

[0011] Furthermore, the telescopic module includes a turntable, which is fixedly installed at the bottom output end of the first motor. A connecting shaft is fixedly installed at the bottom of the turntable, and a rail frame is fixedly installed at the bottom of the connecting shaft. A ball screw is rotatably connected inside the rail frame. The two ends of the ball screw have opposite thread directions. Both ends of the ball screw are threadedly connected to movable blocks. Hinges are fixedly installed at equal intervals on the outer side of the movable blocks. A linkage rod is hinged to the outer side of the hinges. The polishing module is hinged to the outer side of the linkage rod.

[0012] Furthermore, the polishing module includes an outer hinge seat, the inner ends of which are respectively hinged to the outer ends of two linkage rods. An installation rail is fixedly installed on the outer side of the outer hinge seat, and an installation strip is slidably connected inside the installation rail. A polishing arc plate is fixedly installed on the outer side of the installation strip. Installation screws are threaded to both the upper and lower ends of one side of the installation rail, and the installation screws are set as hand-tightening screws.

[0013] Furthermore, the adjustment module includes a chassis, which is fixedly installed on the bottom of the rail frame. An adjustment handle is rotatably connected to the bottom of the chassis. The top of the adjustment handle is connected to the bottom end of a ball screw via a coupling. An anti-loosening screw is threadedly connected to one side of the adjustment handle. The end of the anti-loosening screw passes through the adjustment handle. The anti-loosening screw is also a hand-tightening screw.

[0014] Furthermore, the bottom of the chassis has limit holes arranged in a ring at equal intervals, and the end of the anti-loosening screw is inserted into the limit hole.

[0015] Furthermore, the clamping mechanism includes a clamping reserved circular groove and a side seat. The clamping reserved circular groove is opened in the middle of the front side of the base. The side seat is fixedly installed on the top front side of the base. The side seat is located on both sides of the clamping reserved circular groove. A side plate is fixedly installed on the top of the side seat. A second electric push rod is fixedly installed on the top of the side plate. A clamping plate is fixedly installed at the output end of the second electric push rod. The clamping plate has a V-shaped shape when viewed from above.

[0016] A method for grinding the inner wall of a marine check valve during manufacturing includes the following steps:

[0017] Step 1: For the inner diameter specification of the check valve to be polished, rotate the bottom adjustment handle of the polishing mechanism. The adjustment handle drives the ball screw to rotate through the coupling, causing the two movable blocks on the outer side of the ball screw to move towards or away from each other along the rail frame. The movable blocks pull or push the linkage rod through the hinge seat, causing the polishing module to contract or expand. After the polishing module is in contact with the inner wall of the check valve to the appropriate polishing pressure, tighten the anti-loosening screw on the adjustment handle so that its end is locked into the limit hole. When it is necessary to replace the polishing arc plate, unscrew the mounting screw on the mounting rail, pull out the mounting strip and replace it with a new mounting strip with the corresponding polishing arc plate, and then tighten the mounting screw.

[0018] Step 2: Place the check valve to be ground into the pre-reserved circular groove of the clamping mechanism, start the second electric push rod of the clamping mechanism, the second electric push rod pushes the V-shaped clamping plate closer to the check valve, and the clamping plates on both sides exert force simultaneously to fix the check valve.

[0019] Step 3: Start the second motor of the adjustment mechanism. The second motor drives the ball screw to rotate, causing the slider that cooperates with the ball screw to move horizontally along the top rail, which in turn drives the polishing mechanism to move horizontally to align with the check valve port.

[0020] Step 4: Activate the first electric push rod of the adjustment mechanism. The extension and retraction of its output end drives the polishing mechanism to move up and down, so that the polishing module extends into the appropriate position inside the check valve.

[0021] Step 5: Start the first motor of the polishing mechanism. The first motor drives the turntable, connecting shaft and rail frame to rotate synchronously, so that the polishing module on the rail frame rotates and the polishing arc plate contacts the inner wall of the check valve for polishing.

[0022] Step Six: During the polishing process, start the second motor to drive the slider to move, so that the polishing mechanism moves along the length of the check valve; if the contact pressure between the polishing arc plate and the inner wall is not appropriate, start the first electric push rod to fine adjust the height of the polishing mechanism.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] Firstly, in this invention, during the application of this technical solution, a polishing mechanism with flexible adjustment function is set up, so that for ship check valves of different inner diameters, the internal components can be driven to shrink or expand by simply rotating the adjustment handle, without disassembling any equipment components. This achieves precise adaptation to the inner wall of the check valve. After adaptation, the position of the polishing module can be fixed by an anti-loosening structure to avoid displacement due to vibration during polishing. This achieves the effect of quickly adapting to check valves of different diameters and ensuring the stability of the adaptation. It solves the problem that the existing technology has insufficient adjustment flexibility of the polishing structure, cannot adapt to check valves of various diameters, and requires frequent disassembly of equipment and replacement of polishing components, resulting in time-consuming and laborious adaptation and difficulty in guaranteeing the adaptation accuracy. This greatly improves the equipment's adaptation efficiency and accuracy for check valves of different specifications.

[0025] Secondly, in this invention, during the application of this technical solution, by setting a highly adaptable clamping mechanism, it is possible to place ship check valves of different diameters into the pre-reserved circular groove during use. With the structural advantage of the V-shaped clamping plate, it can quickly and tightly fit the outer surface of the check valve without changing any clamps. Stable fixation is achieved by applying force from both sides simultaneously, thereby simplifying the check valve fixing process and reducing the fixing operation cost. This solves the problem of poor adaptability of the clamping structure in the prior art, which requires frequent replacement of special clamps for check valves of different diameters, which not only consumes a lot of manpower and time, but also easily causes the check valve fixing deviation due to clamp replacement and adjustment. This provides a stable processing foundation for subsequent efficient grinding.

[0026] Thirdly, in this invention, during the application of this technical solution, by setting a flexibly adjustable position adjustment mechanism, combined with the inner diameter adaptation function of the polishing mechanism, the polishing module can be adjusted according to the inner diameter of the check valve during use. Then, the position adjustment mechanism drives the polishing mechanism to achieve flexible horizontal and vertical movement, quickly completing precise alignment with the check valve port. Moreover, the position can be finely adjusted at any time according to the grinding requirements to adapt to the grinding operations of different areas of the check valve. This achieves the effect of adapting to different specifications of check valves throughout the entire process and improving the continuity of grinding operations. It solves the problem in the prior art that the polishing mechanism cannot flexibly adapt to different inner diameters and is difficult to quickly complete the position alignment, resulting in the need to re-formulate the processing flow for different specifications of check valves, making it impossible to form standardized production and resulting in low production efficiency. This meets the high-efficiency production requirements of shipbuilding. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a top view of the structure in this invention;

[0029] Figure 3This is a schematic diagram of the front view structure in this invention;

[0030] Figure 4 This is a schematic diagram of the rear view structure in this invention;

[0031] Figure 5 This is a schematic diagram of the clamping mechanism in this invention;

[0032] Figure 6 This is a bottom view schematic diagram of the polishing mechanism in this invention;

[0033] Figure 7 This is a schematic diagram of the internal structure of the polishing mechanism in this invention;

[0034] Figure 8 In this invention Figure 6 A magnified structural diagram at point A;

[0035] Figure 9 In this invention Figure 7 A magnified structural diagram at point B.

[0036] In the diagram: 1. Base; 2. Adjustment mechanism; 21. Mounting frame; 22. Top rail; 23. Second motor; 24. Ball screw; 25. Slider; 26. Height adjustment module; 261. Connecting frame; 262. First electric push rod; 263. Support groove; 264. Support block; 265. Support arm; 3. Clamping mechanism; 31. Clamping reserved circular groove; 32. Side seat; 33. Side plate; 34. Second electric push rod; 35. Clamping plate; 4. Polishing mechanism; 41. Mounting frame; 42. First motor; 43. Telescopic module; 431. Turntable; 432. Coupling; 433. Rail frame; 434. Ball screw; 435. Movable block; 436. Hinge seat; 437. Linkage rod; 44. Polishing module; 441. External hinge seat; 442. Mounting rail; 443. Mounting strip; 444. Polishing arc plate; 445. Mounting screw; 45. Adjustment module; 451. Chassis; 452. Adjustable handrail; 453. Anti-loosening screw; 454. Limiting hole. Detailed Implementation

[0037] Example

[0038] Please see Figures 1-9 In this embodiment of the invention, an inner wall grinding device and grinding method for manufacturing a ship check valve include a base 1, an adjustment mechanism 2 fixedly installed on the rear top side of the base 1, a clamping mechanism 3 fixedly installed on the front top side of the base 1, and a polishing mechanism 4 fixedly installed on the moving end of the adjustment mechanism 2.

[0039] The polishing mechanism 4 includes a mounting frame 41, which is fixedly mounted on the bottom of the moving end of the adjusting mechanism 2. A first motor 42 is fixedly mounted inside the mounting frame 41. A telescopic module 43 is fixedly mounted through the bottom output end of the first motor 42. A polishing module 44 is mounted on the outside of the telescopic module 43. An adjusting module 45 is mounted on the bottom of the telescopic module 43. The top of the adjusting module 45 is connected to the telescopic module 43 via a transmission. During the application of this device, the moving end of the adjusting mechanism 2 drives the polishing mechanism 4 to move as a whole, thereby adapting to the position requirements of the ship's check valve to be polished. When the polishing mechanism 4 is working, the mounting bracket 41 provides a stable mounting base for the internal first motor 42. After the first motor 42 starts, its bottom output end drives the telescopic module 43 to operate. The telescopic module 43 then drives the outer polishing module 44 to expand or contract, allowing the polishing module 44 to fit the inner wall of check valves with different inner diameter specifications. At the same time, the adjusting module 45 at the bottom of the telescopic module 43 forms a transmission cooperation with the telescopic module 43. The operator can precisely control the movement range of the telescopic module 43 through the adjusting module 45 to ensure the polishing module... The expansion or contraction of assembly 44 perfectly matches the inner diameter of the check valve. This structural design allows the polishing mechanism 4 to quickly adapt to the inner wall of check valves of different specifications without disassembling any parts, avoiding the time wasted due to frequent replacement of polishing components in the prior art and greatly improving the preparation efficiency before polishing. In addition, the transmission method driven by the first motor 42 can ensure the stable operation of the polishing module 44, reduce shaking during the polishing process, and help improve the uniformity and smoothness of the inner wall polishing of the check valve. The adjustment mechanism 2 drives the polishing mechanism 4 to move flexibly through the moving end, which also allows the equipment to adapt to the polishing needs of check valves in different installation positions, further enhancing the practicality and applicability of the equipment.

[0040] Please see Figures 1-7The adjustment mechanism 2 includes a mounting frame 21, which is fixedly installed on the top rear side of the base 1. A top rail 22 is fixedly installed on the top of the mounting frame 21. A second motor 23 is fixedly installed at one end of the top rail 22. A ball screw 24 is fixedly installed at the output end of the second motor 23. The ball screw 24 is rotatably connected to the inside of the top rail 22. A slider 25 is threadedly connected to the outer surface of the ball screw 24. The slider 25 is slidably connected to the inside of the guide rail. A height adjustment module 26 is fixedly installed on the outer side of the slider 25. A mounting bracket 41 is fixedly installed on the adjustment mechanism 2. At the bottom of the high module 26, during the application of this device, its adjustment mechanism 2 provides a stable mounting support for the top rail 22 through the mounting frame 21, ensuring stable subsequent adjustment actions. When it is necessary to adjust the position of the polishing mechanism 4, the second motor 23 at one end of the top rail 22 is started. The output end of the second motor 23 will drive the ball screw 24 to rotate inside the top rail 22. Since the ball screw 24 is threadedly connected to the slider 25, and the slider 25 can slide in the guide rail, the rotation of the ball screw 24 will be converted into the horizontal movement of the slider 25 along the guide rail. When the device moves, the height adjustment module 26 mounted on the outside moves synchronously. The mounting frame 41 of the polishing mechanism 4 is fixed at the bottom of the height adjustment module 26. Therefore, the height adjustment module 26 can adjust the horizontal position of the entire polishing mechanism 4, allowing the polishing mechanism 4 to be accurately aligned with the port of the check valve to be polished. At the same time, by operating the height adjustment module 26, the mounting frame 41 and the polishing mechanism 4 can be adjusted vertically, allowing the polishing parts of the polishing mechanism 4 to smoothly extend into the appropriate polishing position inside the check valve. This adjustment method does not require the overall disassembly or reassembly of the equipment. The horizontal and vertical position calibration of the polishing mechanism 4 can be completed by motor drive and module adjustment. Compared with the cumbersome position adjustment method in the prior art, it greatly saves adjustment time and improves work efficiency. Moreover, the high transmission precision of the ball screw 24 and the slider 25 can ensure the accuracy of the position adjustment of the polishing mechanism 4, laying the foundation for subsequent precise polishing. At the same time, the stable structure of the mounting frame 21 and the top rail 22 also avoids the shaking of the equipment during the adjustment process, further improving the stability of the adjustment process.

[0041] Please see Figures 1-4 and Figure 7The height adjustment module 26 includes a connecting frame 261, which is fixedly installed on the outer end of the slider 25. A first electric push rod 262 is fixedly installed on the outer end of the connecting frame 261. The output end of the first electric push rod 262 passes through the connecting frame 261 and is fixedly connected to the top of the mounting frame 41. A support groove 263 is provided on the back of the top rail 22. A support block 264 is slidably connected inside the support groove 263. A support arm 265 is fixedly installed on the outer side of the support block 264. The outer end of the support arm 265 is connected to the outer side of the connecting frame 261. In this fixed connection, during the application of this device, its height adjustment module 26 is connected to the slider 25 of the adjustment mechanism 2 via the connecting frame 261. When the slider 25 drives the connecting frame 261 to move horizontally, the connecting frame 261 will simultaneously move the first electric push rod 262 and the mounting frame 41 of the polishing mechanism 4 below, ensuring that the polishing mechanism 4 can adjust its horizontal position according to the adjustment requirements. When it is necessary to adjust the vertical height of the polishing mechanism 4, the first electric push rod 262 is activated, and its output end will extend and retract vertically along with the mounting frame 41 that passes through the connecting frame 261. This allows the polishing mechanism 4 to be precisely adjusted to the appropriate height for polishing the check valve. Whether it needs to be polished deep inside the check valve or is working near the port, height calibration can be flexibly achieved. Meanwhile, a support block 264 is slidably connected within the support groove 263 on the back of the top rail 22. The support block 264 is fixed to the outside of the connecting frame 261 via the support arm 265. When the connecting frame 261 moves horizontally with the slider 25 or moves up and down with the first electric push rod 262, the support block 264 slides synchronously along the support groove 263, providing support. Arm 265 provides stable support to the connecting frame 261, preventing the connecting frame 261 from swaying or shifting due to the weight of the polishing mechanism 4. This design makes the height adjustment of the polishing mechanism 4 both flexible and stable, without the need for additional fixing parts or repeated disassembly and adjustment. Compared with the deviation problem that is easy to occur when adjusting the height in the prior art, it can greatly improve the adjustment accuracy. At the same time, the support structure makes the whole adjustment process smoother, reduces the polishing error caused by swaying, and further ensures the polishing quality of the inner wall of the check valve.

[0042] Please see Figures 6-9The telescopic module 43 includes a turntable 431, which is fixedly installed at the bottom output end of the first motor 42. A connecting shaft 432 is fixedly installed at the bottom of the turntable 431, and a rail frame 433 is fixedly installed at the bottom of the connecting shaft 432. A ball screw 434 is rotatably connected inside the rail frame 433. The two ends of the ball screw 434 have opposite threads, and both ends of the ball screw 434 are threadedly connected to movable blocks 435. Hinges 436 are fixedly installed at equal intervals on the outer side of the movable blocks 435. Linkage rods 437 are hinged to the outer side of the hinges 436. The polishing module 44 is hinged to the outer side of the linkage rods 437. The polishing module 44 includes an outer hinge seat 441, the inner ends of which are respectively hinged to the outer ends of the two linkage rods 437. An installation rail 442 is fixedly installed on the outer side of the mounting module 433. An installation strip 443 is slidably connected inside the installation rail 442. A polished arc plate 444 is fixedly installed on the outer side of the installation strip 443. Installation screws 445 are threaded to both the upper and lower ends of one side of the installation rail 442. The installation screws 445 are hand-tightened screws. The adjustment module 45 includes a base 451, which is fixedly installed on the bottom of the rail frame 433. An adjustment handle 452 is rotatably connected to the bottom of the base 451. The top of the adjustment handle 452 is connected to the bottom end of the ball screw 434 through a coupling. An anti-loosening screw 453 is threaded to one side of the adjustment handle 452. The end of the anti-loosening screw 453 passes through the adjustment handle 452. The anti-loosening screw 453 is also a hand-tightened screw. The bottom of the chassis 451 has equally spaced, ring-shaped limit holes 454. The end of the anti-loosening screw 453 is inserted into the limit hole 454. During the application of this device, the turntable 431 of its telescopic module 43 rotates with the output end of the first motor 42, and drives the rail frame 433 to rotate synchronously through the coupling shaft 432. The ball screw 434 inside the rail frame 433 rotates accordingly. Since the threads at both ends of the ball screw 434 turn in opposite directions, the two movable blocks 435 on the outer side will move towards or away from each other along the rail frame 433. When the movable blocks 435 move, they pull or push the linkage rod 437 through the outer hinge seat 436. The linkage rod 437 then drives the polishing module 44 on the outer hinge to contract or expand, thereby adapting to the inner wall of check valves with different inner diameters. The outer hinge seat 441 of component 4 is provided with a mounting rail 442 on its outer side. The mounting strip 443 can slide within the mounting rail 442. When replacing the polishing arc plate 444, simply unscrew the hand-tightening mounting screw 445, remove the old mounting strip 443 and replace it with the mounting strip 443 with the new polishing arc plate 444, then tighten the mounting screw 445. No additional tools are required. When the adjusting handle 452 of the adjusting module 45 rotates, it drives the ball screw 434 to rotate through the coupling, thereby controlling the movement of the movable block 435. After the polishing module 44 is adjusted to the appropriate position, tighten the hand-tightening anti-loosening screw 453 so that its end is inserted into the limiting hole 454 at the bottom of the chassis 451 to fix the position of the ball screw 434 and prevent the polishing module 44 from shifting due to vibration during polishing.This design allows for easy adjustment of the polishing module 44 simply by rotating the handle, eliminating the need to disassemble components and significantly reducing adjustment time. The hand-tightening screw also makes replacing the polishing arc plate 444 and securing the module easier. Meanwhile, the cooperation between the ball screw 434 and the movable block 435 ensures adjustment precision, allowing the polishing arc plate 444 to fit more tightly against the inner wall of the check valve, thus improving the polishing effect.

[0043] Please see Figures 1-5 The clamping mechanism 3 includes a pre-reserved circular groove 31 and a side seat 32. The pre-reserved circular groove 31 is located in the middle of the front side of the base 1. The side seat 32 is fixedly installed on the top front side of the base 1, and is located on both sides of the pre-reserved circular groove 31. A side plate 33 is fixedly installed on the top of the side seat 32, and a second electric push rod 34 is fixedly installed on the top of the side plate 33. A clamping plate 35 is fixedly installed at the output end of the second electric push rod 34. The clamping plate 35 has a V-shaped shape when viewed from above. During the application of this device, the clamping mechanism 3 uses the pre-reserved circular groove 31 in the middle of the front side of the base 1 to initially position the check valve to be ground, thus preventing significant displacement of the check valve during subsequent fixing. After the check valve is properly placed, the second electric push rod 34 on the top side plate 33 of the side seat 32 is activated. The output end of the second electric push rod 34 pushes the clamping plate 35 towards the check valve. Since the clamping plate 35 has a V-shaped shape when viewed from above... Regardless of the check valve's diameter, the outer surface of the V-shaped clamping plate 35 can fit tightly against the inner side of the check valve. The clamping plates 35 on both sides exert force simultaneously, which can stably fix the check valve above the clamping reserved circular groove 31. The entire fixing process does not require changing special clamps for check valves of different diameters. The position of the clamping plate 35 can be adjusted by extending and retracting the second electric push rod 34. The operation is simple and efficient. Compared with the existing technology that requires frequent disassembly and replacement of clamps, it greatly saves the time and labor costs of fixing the check valve. At the same time, the V-shaped clamping plate 35 can form a uniform clamping force on the check valve, avoiding deformation of the check valve due to excessive local force. It also provides a stable processing foundation for subsequent grinding operations and reduces grinding errors caused by check valve shaking.

[0044] A method for grinding the inner wall of a marine check valve during manufacturing includes the following steps:

[0045] Step 1: For the inner diameter specification of the check valve to be polished, rotate the bottom adjustment handle 452 of the polishing mechanism 4. The adjustment handle 452 drives the ball screw 434 to rotate through the coupling, so that the two movable blocks 435 on the outer side of the ball screw 434 move towards or away from each other along the rail frame 433. The movable blocks 435 pull or push the linkage rod 437 through the hinge seat 436, causing the polishing module 44 to contract or expand. After the polishing module 44 is in contact with the inner wall of the check valve to the appropriate polishing pressure, tighten the anti-loosening screw 453 on the adjustment handle 452 so that its end is locked into the limit hole 454. When the polishing arc plate 444 needs to be replaced, unscrew the mounting screw 445 on the mounting rail 442, pull out the mounting strip 443 and replace it with a new mounting strip 443 with the corresponding polishing arc plate 444, and then tighten the mounting screw 445.

[0046] Step 2: Place the check valve to be ground into the pre-reserved circular groove 31 of the clamping mechanism 3, start the second electric push rod 34 of the clamping mechanism 3, the second electric push rod 34 pushes the V-shaped clamping plate 35 closer to the check valve, and the clamping plates 35 on both sides exert force simultaneously to fix the check valve.

[0047] Step 3: Start the second motor 23 of the adjustment mechanism 2. The second motor 23 drives the ball screw 24 to rotate, so that the slider 25 cooperating with the ball screw 24 moves horizontally along the top rail 22, driving the polishing mechanism 4 to move horizontally synchronously to align with the check valve port.

[0048] Step 4: Start the first electric push rod 262 of the adjustment mechanism 2, and drive the polishing mechanism 4 to move up and down through the extension and retraction of its output end, so that the polishing module 44 extends into the appropriate position inside the check valve.

[0049] Step 5: Start the first motor 42 of the polishing mechanism 4. The first motor 42 drives the turntable 431, the connecting shaft 432 and the rail frame 433 to rotate synchronously, so that the polishing module 44 on the rail frame 433 rotates and the polishing arc plate 444 contacts the inner wall of the check valve for polishing.

[0050] Step Six: During the polishing process, start the second motor 23 to drive the slider 25 to move, so that the polishing mechanism 4 moves along the length of the check valve; if the contact pressure between the polishing arc plate 444 and the inner wall is not appropriate, start the first electric push rod 262 to finely adjust the height of the polishing mechanism 4.

[0051] The working principle of this invention is as follows: During the application of this device, firstly, the polishing mechanism 4 is adjusted to match the inner diameter of the check valve to be polished. The adjusting handle 452 at the bottom of the polishing mechanism 4 is rotated. The adjusting handle 452 drives the ball screw 434 above it to rotate via a coupling. Since the threads at both ends of the ball screw 434 rotate in opposite directions, the two movable blocks 435 on its outer side will move towards or away from each other along the rail frame 433. When the movable blocks 435 move, they pull or push the linkage rod 437 through the outer hinge seat 436, thereby causing the polishing module 44 to contract or expand. When the movable blocks 435 move away from each other, the polishing module 44 opens outward to match the large inner diameter check valve; when the movable blocks 435 move towards each other, the polishing module 44 retracts inward to match the small inner diameter check valve. The entire adjustment process does not require disassembling any parts; it can be completed simply by rotating the adjusting handle 452, allowing for flexible adaptation to check valves of different inner diameters. The valve completely solves the defect of the inflexible adjustment of the polishing structure in the existing technology. After the polishing module 44 is in contact with the inner wall of the check valve to the appropriate grinding pressure, the anti-loosening screw 453 on the adjusting handle 452 is turned so that its end is locked into the limiting hole 454, which can fix the position of the ball screw 434 and prevent the polishing module 44 from shifting due to vibration during subsequent grinding. If it is necessary to replace the polishing arc plate 444 with a different grinding grit, simply unscrew the mounting screw 445 on the mounting rail 442, pull out the mounting strip 443 and replace it with a new mounting strip 443 with the corresponding polishing arc plate 444, and then tighten the mounting screw 445. No complicated tools are needed, which greatly saves replacement time. After the inner diameter of the polishing mechanism 4 is adapted, the check valve to be ground is placed in the clamping reserved circular groove 31 of the clamping mechanism 3. The clamping reserved circular groove 31 forms a preliminary limit on the check valve. The second electric push rod 34 of the clamping mechanism 3 is activated. The second electric push rod 34 pushes the V The V-shaped clamping plate 35 moves closer to the check valve. The V-shaped structure can fit tightly to the outer surface of check valves of different diameters. The clamping plates 35 on both sides exert force simultaneously to stably fix the check valve. There is no need to change the clamps for check valves of different diameters, saving the manpower and time costs of frequently changing clamps. This solves the problem of poor adaptability of the fixing structure in the existing technology and provides a stable foundation for grinding operations.

[0052] Subsequently, the position of the polishing mechanism 4 is adjusted to precisely align with the check valve port. The second motor 23 of the adjustment mechanism 2 is then activated, which drives the ball screw 24 to rotate. The slider 25, which cooperates with the ball screw 24, moves horizontally along the top rail 22, thereby driving the polishing mechanism 4 to move horizontally synchronously until it is aligned with the check valve port. If the vertical height of the polishing mechanism 4 needs to be adjusted, the first electric push rod 262 is activated, and its output end extends and retracts, driving the polishing mechanism 4 to move up and down, so that the polishing module 44 can be smoothly inserted into the check valve. During this process, the support block 264 slides synchronously along the support groove 263, and the support arm 265 provides auxiliary support to the connecting frame 261, preventing the polishing mechanism 4 from shaking during movement and ensuring accurate alignment. Compared with the existing technology that requires the entire equipment to be disassembled for adjustment, this adjustment is more convenient and efficient, significantly reducing the alignment time.

[0053] Finally, the first motor 42 of the polishing mechanism 4 is activated. The first motor 42 drives the turntable 431, the connecting shaft 432, and the rail frame 433 to rotate synchronously. The polishing module 44 on the rail frame 433 rotates accordingly, and the polishing arc plate 444 contacts and polishes the inner wall of the check valve. During the polishing process, the second motor 23 can be activated again, and the slider 25 drives the polishing mechanism 4 to move along the length of the check valve so that the polishing module 44 covers the entire length of the inner wall of the check valve. If the contact pressure between the polishing arc plate 444 and the inner wall is not appropriate, the height of the polishing mechanism 4 can be finely adjusted by the first electric push rod 262 to ensure stable contact pressure. This technical solution achieves efficient polishing of the inner wall of check valves of different specifications through the synergistic effect of various structures, eliminating the need for frequent disassembly and replacement of components and shortening the production cycle. At the same time, the stable fixing and adjustment structure ensures the uniformity and smoothness of polishing, improves the processing quality of the check valve, and reduces the damage to the equipment caused by repeated disassembly. To reduce production costs and meet the demands of rapid delivery and high-quality production in the shipbuilding industry, an automatic adjustment design can be adopted when manual adjustment is inconvenient. For automatic adjustment, a motor can be installed at the bottom of the rail frame 433. By connecting the motor's output shaft to the bottom of the ball screw 434, the motor can drive the ball screw 434 to rotate, thus achieving automatic adjustment. During use, the motor power supply can be assisted by a conductive slip ring. Regarding the ball screw 434 and debris during grinding and polishing, both the ball screw 434 and the moving block 435 can be made of high-strength materials, such as tungsten steel or chromium-molybdenum alloy steel, etc. Utilizing the powerful torque of the motor, even impurities on the screw can be squeezed out. Furthermore, before each adjustment, the screw can be pulled out for pre-cleaning to remove debris before adjustment.

Claims

1. A ship check valve manufacturing inner wall polishing apparatus characterized by, Including the base (1), the top rear side of the base (1) is fixedly installed with the adjusting mechanism (2), the top front side of the base (1) is fixedly installed with the clamping mechanism (3), the moving end of the adjusting mechanism (2) is fixedly installed with the polishing mechanism (4); The polishing mechanism (4) includes a mounting frame (41), the mounting frame (41) is fixedly installed at the bottom of the moving end of the adjusting mechanism (2), a first motor (42) is fixedly installed inside the mounting frame (41), a telescopic module (43) is fixedly installed at the bottom output end of the first motor (42) penetrating through the mounting frame (41), a polishing module (44) is installed on the outer side of the telescopic module (43), an adjusting module (45) is installed at the bottom of the telescopic module (43), and the top of the adjusting module (45) is in transmission connection with the telescopic module (43); The telescopic module (43) includes a turntable (431), the turntable (431) is fixedly installed at the bottom output end of the first motor (42), a connecting shaft (432) is fixedly installed at the bottom of the turntable (431), a rail frame (433) is fixedly installed at the bottom of the connecting shaft (432), a ball screw (434) is rotatably connected inside the rail frame (433), the thread rotation directions of the two ends of the ball screw (434) are opposite, movable blocks (435) are threadedly connected at the two ends of the ball screw (434), hinged seats (436) are fixedly installed at the outer side of the movable blocks (435) at equal intervals, linkage rods (437) are hinged at the outer side of the hinged seats (436), and the polishing module (44) is hinged at the outer side of the linkage rods (437); The polishing module (44) includes an outer hinge seat (441), the inner sides of the two ends of the outer hinge seat (441) are respectively hinged with the outer ends of the two linkage rods (437), an installation rail (442) is fixedly installed at the outer side of the outer hinge seat (441), an installation strip (443) is slidably connected inside the installation rail (442), a polishing arc plate (444) is fixedly installed at the outer side of the installation strip (443), mounting screws (445) are threadedly connected at the upper and lower ends of one side of the installation rail (442), and the mounting screws (445) are hand-tightening type screws; The adjusting module (45) includes a bottom disc (451), the bottom disc (451) is fixedly installed at the bottom of the rail frame (433), an adjusting handrail (452) is rotatably connected at the bottom of the bottom disc (451), the top of the adjusting handrail (452) is connected with the bottom end of the ball screw (434) through a coupling, an anti-loosening screw (453) is threadedly connected at one side of the adjusting handrail (452), the end of the anti-loosening screw (453) penetrates through the adjusting handrail (452), and the anti-loosening screw (453) is also a hand-tightening type screw.

2. A ship check valve manufacturing inner wall polishing apparatus according to claim 1, characterized in that, The adjusting mechanism (2) comprises a mounting frame (21) fixedly installed at the top rear side of the base (1), a top rail (22) fixedly installed at the top of the mounting frame (21), a second motor (23) fixedly installed at one end of the top rail (22), a ball screw (24) fixedly installed at the output end of the second motor (23), the ball screw (24) being rotatably connected to the inside of the top rail (22), a sliding block (25) threadedly connected to the outer surface of the ball screw (24), the sliding block (25) being slidably connected to the inside of the top rail (22), a height-adjusting module (26) fixedly installed at the outer side of the sliding block (25), and a mounting frame (41) fixedly installed at the bottom of the height-adjusting module (26).

3. A ship check valve manufacturing inner wall polishing apparatus according to claim 2, characterized in that, The height-adjusting module (26) comprises a connecting frame (261) fixedly installed at the outer end of the sliding block (25), a first electric push rod (262) fixedly installed at the outer end of the connecting frame (261), and the output end of the first electric push rod (262) penetrating through the connecting frame (261) and being fixedly connected to the top of the mounting frame (41).

4. A ship check valve manufacturing inner wall polishing apparatus according to claim 3, characterized in that, The back surface of the top rail (22) is provided with a supporting sliding groove (263), the inside of the supporting sliding groove (263) is slidably connected with a supporting block (264), the outer side of the supporting block (264) is fixedly installed with a supporting arm (265), and the outer end of the supporting arm (265) is fixedly connected with the outer side of the connecting frame (261).

5. A ship check valve manufacturing inner wall polishing apparatus according to claim 4, characterized in that, The bottom of the bottom disc (451) is provided with limit holes (454) arranged in a ring shape at equal intervals, and the end of the anti-loosening screw rod (453) is inserted into the inside of the limit hole (454).

6. A ship check valve manufacturing inner wall polishing apparatus according to claim 5, wherein The clamping mechanism (3) comprises a clamping reserved circular groove (31) and a side seat (32), the clamping reserved circular groove (31) is arranged in the front middle part of the base (1), the side seat (32) is fixedly installed at the top front side of the base (1), the side seat (32) is arranged at the two sides of the clamping reserved circular groove (31), the top of the side seat (32) is fixedly installed with a side plate (33), the top of the side plate (33) is fixedly installed with a second electric push rod (34), the output end of the second electric push rod (34) is fixedly installed with a clamping plate (35), and the clamping plate (35) is in a V-shaped shape in plan view.

7. A method for polishing the inner wall of a marine check valve manufacturing, using the polishing equipment for the inner wall of a marine check valve manufacturing according to claim 6, characterized in that, The method comprises the following steps: Step one: according to the inner diameter specification of the ship check valve to be polished, rotate the bottom adjusting handle (452) of the polishing mechanism (4), the adjusting handle (452) drives the ball screw (434) to rotate through the coupling, and the two movable blocks (435) on the outside of the ball screw (434) move towards or away from each other along the rail frame (433), the movable blocks (435) pull or push the linkage rod (437) through the hinge seat (436), and the polishing module (44) is driven to contract or expand; after the polishing module (44) is attached to the inner wall of the check valve to the appropriate polishing pressure, the anti-loosening screw (453) on the adjusting handle (452) is twisted, and the end is clamped into the limiting hole (454); when the polishing arc plate (444) needs to be replaced, the installation screw (445) on the installation rail (442) is unscrewed, the new installation strip (443) with the corresponding polishing arc plate (444) is replaced, and the installation screw (445) is tightened again; Step two: place the check valve to be polished in the clamping reserved circular groove (31) of the clamping mechanism (3), start the second electric push rod (34) of the clamping mechanism (3), the second electric push rod (34) pushes the V-shaped clamping plate (35) to approach the check valve, and the two clamping plates (35) on both sides synchronize to fix the check valve; Step three: start the second motor (23) of the adjusting mechanism (2), the second motor (23) drives the ball screw (24) to rotate, so that the sliding block (25) matched with the ball screw (24) moves horizontally along the top rail (22), and the polishing mechanism (4) is driven to move horizontally to the position opposite to the check valve port; Step four: start the first electric push rod (262) of the adjusting mechanism (2), drive the polishing mechanism (4) to move up and down through the extension of the output end, so that the polishing module (44) extends into the appropriate position inside the check valve; Step five: start the first motor (42) of the polishing mechanism (4), the first motor (42) drives the rotating disc (431), the connecting shaft (432) and the rail frame (433) to rotate synchronously, so that the polishing module (44) on the rail frame (433) rotates, and the polishing arc plate (444) contacts the inner wall of the check valve for polishing; Step six: during the polishing process, start the second motor (23) to drive the sliding block (25) to move, so that the polishing mechanism (4) moves along the length direction of the check valve; if the contact pressure between the polishing arc plate (444) and the inner wall is improper, the height of the polishing mechanism (4) can be adjusted by starting the first electric push rod (262).

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