A kind of inner wall polishing equipment for ship check valve production and its polishing method

Abstract

The application discloses a kind of inner wall polishing equipment of ship check valve production and manufacture and polishing method thereof, belong to ship check valve production and processing technical field, including processing table, installation ring is rotatably installed on the processing table, clamping assembly for clamping valve body is equipped on the installation ring, stepper motor is fixedly installed on the processing table, gear set is jointly installed between the rotating shaft of the stepper motor and installation ring, polishing assembly is equipped on the processing table.The scheme is polished by constant force spring cooperation steel wire bundle grinding head, during polishing process, constant force spring can automatically fine-tune grinding head position according to the difference of valve body inner wall aperture change, curved surface radian, let steel wire bundle grinding head always closely adhere to valve body inner wall, avoid inner wall polishing uneven and local leak grinding, and can be adapted to different inner diameter, different specifications of ship check valve polishing operation, effectively reduce equipment debugging, spare parts replacement preparation time, effectively improve polishing operation efficiency.

Description

Technical Field

[0001] This invention relates to the field of marine check valve manufacturing technology, and more specifically, to an inner wall grinding device and grinding method for marine check valve manufacturing. Background Technology

[0002] Ship check valves are automatic one-way valves that open and close automatically based on the pressure of the medium. They allow only one-way flow of seawater, fuel oil, lubricating oil, fresh water, and steam. They are key components that ensure the one-way flow of the medium in the ship's pipeline system and prevent backflow of the medium from causing equipment failure and safety hazards.

[0003] Because the inner wall of a ship's check valve has casting oxide scale, gate burrs, and uneven sand holes after casting, it is prone to the growth of marine organisms and vortex cavitation during navigation, which significantly shortens the valve's service life and can also damage the sealing surface, leading to pipeline leaks. Therefore, the inner wall of the valve body needs to be polished after manufacturing. Since large ship check valves need to be customized according to specific parameters such as the pipe diameter, medium flow rate, and pressure rating of the ship's pipeline system, the valve body diameter specifications are quite diverse. When polishing the inner wall of check valves of different diameters, the entire equipment needs to be disassembled and reassembled, or the polishing components and tooling fixtures of the appropriate specifications need to be replaced, which affects the polishing efficiency.

[0004] To address the aforementioned issues, some solutions have been proposed in existing technologies. For example, Chinese invention patent CN120862504B discloses an internal wall grinding device and method for manufacturing ship check valves. This device can drive internal components to shrink or expand the polishing module by rotating the adjustment handle, without disassembling any equipment components. It can achieve precise adaptation to the inner wall of the check valve, enabling rapid adaptation to check valves of different diameters and ensuring adaptation stability, thus effectively improving processing efficiency. However, in actual grinding, the inner wall of the valve body is usually curved, not straight. Simply adjusting the polishing module to shrink or expand can only grind the straight end of the valve body. The curved section of the valve body needs to be ground again afterward, which seriously affects grinding efficiency. Summary of the Invention

[0005] In view of the problems existing in the prior art, the purpose of this invention is to provide an inner wall grinding equipment for the production and manufacturing of ship check valves, which can achieve the goal of improving grinding efficiency.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A grinding device for the inner wall of a ship check valve includes a processing table, on which an installation ring is rotatably mounted, and a clamping assembly for holding the valve body is provided on the installation ring. A stepper motor is fixedly mounted on the processing table, and a gear set is installed between the shaft of the stepper motor and the installation ring. A grinding assembly is provided on the processing table. The grinding assembly includes a mounting frame fixedly installed on a processing table. A first electric push rod is fixedly installed on the mounting frame. A frame body is fixedly installed on the output end of the first electric push rod. A grinding motor is fixedly installed on the frame body. A vertical rod is fixedly installed on the output end of the grinding motor. A mounting block is fixedly installed on the vertical rod. Mounting rods are symmetrically slidably installed on the mounting block. A constant force spring is installed between the mounting rods and the mounting block. A wire bundle grinding head is fixedly installed at the end of the mounting rod away from the mounting block. A second electric push rod is fixedly installed on the vertical rod. A connecting rope fixedly connected to the mounting rod is fixedly installed on the output end of the second electric push rod.

[0008] Furthermore, the clamping assembly includes an electric telescopic rod uniformly fixedly mounted on the mounting ring, an mounting plate fixedly mounted on the output end of the electric telescopic rod, a horizontal rod provided on the mounting plate, a fixed rod slidably mounted on the horizontal rod, a first spring being installed between the fixed rod and the horizontal rod, and a clamping plate fixedly mounted on the end of the fixed rod away from the horizontal rod.

[0009] Furthermore, a dust removal port is provided on the mounting ring, a mesh plate is fixedly installed inside the dust removal port, a filter box is fixedly installed on the processing table, an air pump is fixedly installed on the side wall of the filter box, and a communication port communicating with the filter box is provided on the processing table.

[0010] Furthermore, a push block is fixedly installed on the horizontal rod, a vertical groove is provided on the mounting plate, and the horizontal rod is vertically slidably installed in the vertical groove. A second spring is installed between the horizontal rod and the vertical groove. A linkage block that cooperates with the push block is fixedly installed on the mounting ring, and an inclined groove is provided on the linkage block.

[0011] Furthermore, a limiting rod is slidably installed on the push block, and a third spring is installed between the limiting rod and the push block. A limiting groove that cooperates with the limiting rod is provided on the fixing rod.

[0012] Furthermore, a third electric push rod is fixedly installed on the processing table, a push plate is fixedly installed on the output end of the third electric push rod, and a collection box is detachably installed on the processing table.

[0013] Furthermore, an anti-slip pad is fixedly installed on the side wall of the clamping plate away from the fixing rod.

[0014] Furthermore, guide wheels that cooperate with the connecting rope are symmetrically rotatably mounted on the mounting block.

[0015] Furthermore, the end of the limiting rod near the limiting groove is tapered.

[0016] The present invention also provides a grinding method for an inner wall grinding device suitable for the production and manufacturing of the above-mentioned ship check valve, comprising the following steps: S1. After the equipment is started, the electric telescopic rod on the control mounting ring extends outward, causing the mounting plates on both sides to slowly move closer to each other. As the mounting plates move, the clamping plates at both ends will move synchronously closer to the valve body and automatically align the valve body position through the horizontal rod and the fixed rod. After the valve body is aligned, the electric telescopic rod continues to extend slightly. At this time, the fixed rod will slide along the horizontal rod and compress the first spring. Relying on the buffering force of the first spring, the valve body can be firmly clamped, and the excessive clamping force can be avoided to damage the valve body surface. At the same time, this clamping structure is suitable for valve bodies of different sizes. S2. While clamping, the horizontal rod will drive the push block to move synchronously. When the valve body is clamped in place, the push block will fit against the inclined groove of the linkage block and slide upward along the inclined groove trajectory, driving the horizontal rod to move upward as a whole and lifting the clamped valve body, so that the bottom of the valve body is raised and detached from the mesh plate, providing downward overtravel space for the wire bundle grinding head and preventing the edge of the mesh plate from interfering with the movement of the grinding head. S3. After the valve body is aligned and lifted into position, the limit rod on the push block will automatically align with the limit groove on the fixed rod. The linkage block will push the limit rod at the conical end into the limit groove, locking the horizontal rod and the fixed rod to ensure that the valve body will not shake or shift during the subsequent high-speed grinding process. S4. After the valve body is clamped and locked, start the stepper motor. The stepper motor drives the mounting ring to rotate smoothly through the gear set, and transfer the fixed valve body to the bottom of the grinding component to complete the docking of the processing station. Then, control the first electric push rod on the mounting frame to extend downward, drive the frame, grinding motor and vertical rod to move down as a whole, and let the steel wire bundle grinding head at the bottom of the vertical rod slowly extend into the valve body. S5. After the grinding head enters the valve body, the second electric push rod is activated to extend it. The originally taut connecting rope will become loose. At this time, the constant force spring in the compressed state will automatically extend and push the symmetrically arranged mounting rods to slide to both sides, so that the wire bundle grinding head fits tightly against the inner wall of the valve body. Then, the grinding motor is turned on. The motor drives the wire bundle grinding head to rotate at high speed through the vertical rod, mounting block, and mounting rod to grind the inner wall of the valve body. Relying on the adaptive elasticity of the constant force spring, the grinding head will always fit against the inner wall of the valve body. Even if there is a slight deviation in the diameter of the inner wall of the valve body, it can be ground in one go, which can adapt to the grinding needs of valve bodies of different sizes. S6. The air pump can be turned on simultaneously during the entire grinding process. After the installation ring is rotated into place, the dust removal port on the ring will be precisely connected with the connection port of the processing table. The air pump will continuously suck in air, and the iron filings and debris generated during grinding will pass through the mesh plate and be sucked into the filter box through the dust removal port and connection port for unified collection and treatment. S7. After a single valve body is polished, the second electric push rod retracts, pulling the connecting rope to tighten and causing the mounting rods on both sides and the wire bundle grinding head to move closer together, allowing the grinding head to detach from the inner wall of the valve body. Then, the first electric push rod retracts, causing the entire polishing assembly to move upward and completely separate from the valve body. Next, the stepper motor starts again, causing the mounting ring to rotate and rotate the polished valve body out of the polishing station. At the same time, the new valve body to be polished is transferred to the polishing station. After the polished valve body is rotated away from the polishing station, the clamping assembly releases its clamp on the valve body. When the polished valve body is transferred to the unloading station, the third electric push rod on the processing table extends, causing the push plate to move forward and smoothly push the valve body into the detachable collection box.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) This solution uses a constant force spring in conjunction with a wire bundle grinding head. During the grinding process, the constant force spring can automatically adjust the position of the grinding head according to the change of the inner wall diameter of the valve body and the difference of the curvature of the surface, so that the wire bundle grinding head is always in close contact with the inner wall of the valve body, avoiding uneven grinding of the inner wall and local missed grinding. It can also be adapted to the grinding operation of ship check valves with different inner diameters and different specifications, effectively reducing the preparation time for equipment debugging and parts replacement, and effectively improving the grinding operation efficiency. (2) After the clamping assembly completes the valve body alignment and fixation, as the mounting plate continues to move the push block through the horizontal bar, the push block will fit the inclined groove of the linkage block and slide upward along the inclined groove trajectory, driving the horizontal bar to move upward as a whole and lifting the clamped valve body, so that the valve body is separated from the mesh plate surface, preventing the mesh plate from blocking and hindering the grinding of the valve body side wall, ensuring that there are no dead angles in the grinding, and effectively avoiding the mesh plate from affecting the grinding efficiency; (3) This solution uses the cooperation of the limit rod and the limit groove. After the linkage block is pushed by the push block and the horizontal rod is lifted as a whole, the linkage block will push the limit rod on the push block to move upward as the horizontal rod continues to drive the push block to move. This will cause the limit rod with the tapered end to be stuck in the limit groove, locking the horizontal rod and the fixed rod, ensuring that the valve body processing remains stable and effectively reducing the defect rate of the workpiece. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle; Figure 3 This is a cross-sectional view of the vertical rod and mounting block of the present invention; Figure 4This is a diagram showing the combination of the gear set and the stepper motor of the present invention; Figure 5 This is a combined diagram of the filter box, mesh plate, dust removal port, and connecting port of the present invention; Figure 6 This is a cross-sectional view of the horizontal bar, mounting plate, push block, and fixing bar of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of section B in the middle.

[0019] Explanation of the labels in the diagram: 101. Machining table; 102. Mounting ring; 103. Stepper motor; 104. Gear set; 2. Grinding assembly; 201. Mounting bracket; 202. First electric push rod; 203. Frame; 204. Grinding motor; 205. Vertical rod; 206. Mounting block; 207. Mounting rod; 208. Constant force spring; 209. Steel wire bundle grinding head; 210. Second electric push rod; 211. Connecting rope; 301. Electric telescopic pole; 302. Mounting plate; 303. Horizontal bar; 304. Fixed bar; 305. First spring; 306. Clamping plate; 401. Dust collection port; 402. Mesh screen; 403. Filter box; 404. Air pump; 405. Connecting port; 501. Push block; 502. Second spring; 503. Linkage block; 504. Inclined groove; 505. Limiting rod; 506. Third spring; 507. Limiting groove; 601. Third electric push rod; 602. Push plate; 603. Collection box; 701. Anti-slip mat; 702. Guide wheel. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1 to 7 A grinding device for the inner wall of a ship check valve includes a processing table 101, on which an mounting ring 102 is rotatably mounted. The mounting ring 102 is provided with a clamping assembly for clamping the valve body. A stepper motor 103 is fixedly mounted on the processing table 101. A gear set 104 is installed between the rotating shaft of the stepper motor 103 and the mounting ring 102. A grinding assembly 2 is provided on the processing table 101. The grinding assembly 2 includes a mounting frame 201 fixedly mounted on a processing table 101. A first electric push rod 202 is fixedly mounted on the mounting frame 201. A frame body 203 is fixedly mounted on the output end of the first electric push rod 202. A grinding motor 204 is fixedly mounted on the frame body 203. A vertical rod 205 is fixedly mounted on the output end of the grinding motor 204. A mounting block 206 is fixedly mounted on the vertical rod 205. Mounting rods 207 are symmetrically slidably mounted on the mounting block 206. A constant force spring 208 is installed between the mounting rods 207 and the mounting block 206. A wire bundle grinding head 209 is fixedly mounted on the end of the mounting rod 207 away from the mounting block 206. A second electric push rod 210 is fixedly mounted on the vertical rod 205. A connecting rope 211 fixedly connected to the mounting rod 207 is fixedly mounted on the output end of the second electric push rod 210.

[0022] In use, the valve body is first placed on the top wall of the mesh plate 402 and clamped and fixed by the clamping assembly. Then, the stepper motor 103 drives the mounting ring 102 to rotate through the gear set 104. After the mounting ring 102 moves the valve body to below the grinding assembly 2, the output end of the first electric push rod 202 extends and drives the frame 203 and the vertical rod 205 to move downward synchronously. During the downward movement of the vertical rod 205, the wire bundle grinding head 209 gradually enters the valve body. At this time, the output end of the second electric push rod 210 extends and the connecting rope 211 becomes loose. It should be noted that a conductive slip ring is fixedly installed on the frame 203, and a rotor that cooperates with the second electric push rod 210 is installed on the vertical rod 205. The cooperation between the conductive slip ring and the rotor is a prior art technique. Spring 208 extends and drives mounting rod 207 to move. During the movement of mounting rod 207, it drives wire bundle grinding head 209 to contact the inner wall of the valve body. Then, grinding motor 204 is started, and the wire bundle grinding head 209 is rotated through vertical rod 205, mounting block 206 and mounting rod 207, thereby grinding the inner wall of the valve body. During the grinding process, as the diameter of the inner wall of the valve body changes, constant force spring 208 can drive wire bundle grinding head 209 to always be in contact with the inner wall of the valve body through mounting rod 207. Therefore, grinding of the inner wall of the valve body can be completed without multiple grinding operations. When grinding valve bodies with inner walls of different sizes, constant force spring 208 can keep wire bundle grinding head 209 in contact with the inner wall of the valve body. Therefore, there is no need to replace or adjust grinding assembly 2, which effectively improves grinding efficiency.

[0023] like Figures 5 to 7As shown, the clamping assembly includes an electric telescopic rod 301 uniformly fixedly mounted on the mounting ring 102. An mounting plate 302 is fixedly mounted on the output end of the electric telescopic rod 301. A horizontal rod 303 is provided on the mounting plate 302. A fixed rod 304 is slidably mounted on the horizontal rod 303. A first spring 305 is installed between the fixed rod 304 and the horizontal rod 303. A clamping plate 306 is fixedly mounted on the end of the fixed rod 304 away from the horizontal rod 303.

[0024] The mounting ring 102 has a dust removal port 401, and a mesh plate 402 is fixedly installed inside the dust removal port 401. A filter box 403 is fixedly installed on the processing table 101, and an air pump 404 is fixedly installed on the side wall of the filter box 403. A communication port 405 communicating with the filter box 403 is opened on the processing table 101.

[0025] A push block 501 is fixedly installed on the horizontal rod 303. A vertical groove is provided on the mounting plate 302, and the horizontal rod 303 is vertically slidably installed in the vertical groove. A second spring 502 is installed between the horizontal rod 303 and the vertical groove. A linkage block 503 that cooperates with the push block 501 is fixedly installed on the mounting ring 102. An inclined groove 504 is provided on the linkage block 503.

[0026] A limiting rod 505 is slidably installed on the push block 501. A third spring 506 is installed between the limiting rod 505 and the push block 501. A limiting groove 507 that cooperates with the limiting rod 505 is provided on the fixing rod 304.

[0027] By adopting the above technical solution, when clamping the valve body, the user can control the output end of the electric telescopic rod 301 to extend and drive the two mounting plates 302 to move closer together. During this process, the horizontal rod 303 and the fixed rod 304 drive the two clamping plates 306 to move closer together. As the two clamping plates 306 move closer, they gradually contact the valve body and push it towards the center of the mesh plate 402, thus automatically aligning the valve body. After the two clamping plates 306 have aligned and clamped the valve body, as the electric telescopic rod 301 continues to extend, the fixed rod 304 slides along the horizontal rod 303 and compresses the first spring 305. Under the action of the first spring 305, excessive clamping force can be avoided, preventing damage to the valve body surface. Furthermore, with the cooperation of the first spring 305 and the fixed rod 304, valve bodies of different sizes can be clamped and fixed without requiring the user to change or adjust the clamping components, saving preparation time during the grinding process.

[0028] When the mounting ring 102 drives the valve body to rotate, the mounting ring 102 also drives the dust collection port 401 to rotate synchronously. When the mounting ring 102 drives the valve body to rotate below the grinding assembly 2, the dust collection port 401 below the grinding assembly 2 connects with the connecting port 405. During grinding, the air pump 404 draws air through the filter box 403, the connecting port 405, and the dust collection port 401. It should be noted that iron filings during grinding can pass through the mesh plate 402, and the filter box 403 is a relatively mature existing technology, so it will not be elaborated further. The airflow carries the grinding debris towards the filter box 403, thus preventing debris from getting stuck in the machine and requiring frequent maintenance and cleaning. Furthermore, the filter box 403 treats the debris, preventing it from splashing everywhere and polluting the working environment while also reducing cleaning difficulty.

[0029] When the electric telescopic rod 301 extends at the output end and drives the clamping plate 306 to clamp the valve body through the mounting plate 302, horizontal rod 303, and fixed rod 304, the horizontal rod 303 moves, causing the push block 501 to move. After the clamping plate 306 aligns and clamps the valve body, the horizontal rod 303 drives the push block 501 to contact the inclined groove 504 of the linkage block 503. Then, the inclined groove 504 of the linkage block 503 guides the push block 501 to move upward. During the upward movement of the push block 501, the horizontal rod 303 is driven to move upward. At this time, the second spring 502 is compressed and has a tendency to recover. During the upward movement of the horizontal rod 303, the valve body is driven to move upward through the fixed rod 304 and clamping plate 306, thereby avoiding the mesh plate 402 from affecting the grinding of the valve body side wall and reducing the grinding efficiency.

[0030] After the horizontal rod 303 drives the push block 501 to contact the inclined groove 504 of the linkage block 503, and the bottom wall of the push block 501 contacts the top wall of the linkage block 503, the horizontal rod 303 continues to drive the push block 501 to move. At this time, the limiting rod 505 on the push block 501 gradually contacts the inclined surface of the push block 501. Then, the push block 501 drives the limiting rod 505 to move upward through the inclined surface. At this time, the third spring 506 is stretched and has a tendency to return to its original state. When the electric telescopic rod 301 stops extending, the limiting rod 505 is inserted into the limiting groove 507, so that the horizontal rod 303 and the fixed rod 304 can be locked, and the clamping plate 306 can be locked to prevent the valve body from shaking during the grinding process and affecting the grinding efficiency.

[0031] like Figure 1 As shown, a third electric push rod 601 is fixedly installed on the processing table 101, a push plate 602 is fixedly installed on the output end of the third electric push rod 601, and a collection box 603 is detachably installed on the processing table 101.

[0032] By adopting the above technical solution, during the grinding process, the user can place the valve body to be ground between the clamping plates 306 where the valve body is not placed, so that grinding and feeding can be carried out simultaneously without removing the ground valve body for feeding. After grinding, the output end of the second electric push rod 210 retracts and pulls the two connecting ropes 211. The two connecting ropes 211 drive the two mounting rods 207 and the wire bundle grinding head 209 to move closer to each other. At this time, the first spring 305 is compressed and has a tendency to return to its original state. The output end of the first electric push rod 202 retracts and drives the wire bundle grinding head 209 to move upward and disengage from the valve body. Then, the mounting ring 102 drives the ground valve body away from the grinding assembly 2 and drives the unground valve body to move towards the grinding assembly 2. The output end of the electric telescopic rod 301 at the ground position retracts and moves through the mounting plate. 302 drives the horizontal rod 303 to move. During the movement of the horizontal rod 303, it causes the push block 501 and the linkage block 503 to move away. At this time, the third spring 506 extends and causes the limiting rod 505 to disengage from the limiting groove 507. After the push block 501 and the linkage block 503 move away, the second spring 502 extends and causes the horizontal rod 303 to return to its original position downwards. As the horizontal rod 303 continues to move, the first spring 305 extends and causes the fixing rod 304 to return to its original position. As the electric telescopic rod 301 continues to retract, the clamping plate 306 gradually disengages from the valve body, thereby releasing the fixation of the valve body. After the mounting ring 102 drives the valve body to rotate to the push plate 602, the output end of the third electric push rod 601 extends and drives the push plate 602 to move. During the movement of the push plate 602, the valve body can be pushed into the collection box 603, thus eliminating the need for manual unloading. Furthermore, material can be loaded during the grinding process, further improving grinding efficiency.

[0033] like Figures 3 to 7 As shown, an anti-slip pad 701 is fixedly installed on the side wall of the clamping plate 306 away from the fixing rod 304.

[0034] The mounting block 206 is symmetrically and rotatably mounted with guide wheels 702 that cooperate with the connecting rope 211.

[0035] The end of the limiting rod 505 near the limiting groove 507 is tapered.

[0036] By adopting the above technical solution, when the clamping plate 306 clamps the valve body, the clamping plate 306 drives the anti-slip pad 701 to contact and clamp the valve body. The anti-slip pad 701 can increase the clamping effect on the valve body, and at the same time, it can also prevent damage to the valve body surface due to rigid clamping between the clamping plate 306 and the valve body. When the connecting rope 211 pulls the mounting rod 207, by setting the guide wheel 702, the connecting rope 211 will drive the guide wheel 702 to rotate at the corner, thereby preventing the connecting rope 211 from getting stuck at the corner. In addition, when the limiting rod 505 is inserted into the limiting groove 507, by making the end of the limiting rod 505 near the limiting groove 507 tapered, it is easier for the limiting rod 505 to be inserted into the limiting groove 507, thereby improving the stability of the device operation.

[0037] The present invention also provides a grinding method for an inner wall grinding device suitable for the production and manufacturing of the above-mentioned ship check valve, comprising the following steps: S1. After the equipment is started, the electric telescopic rod 301 on the control mounting ring 102 extends outward, causing the mounting plates 302 on both sides to slowly move closer to each other. As the mounting plates 302 move, the clamping plates 306 at both ends will move synchronously closer to the valve body and automatically align the valve body position through the horizontal rod 303 and the fixed rod 304. After the valve body is aligned, the electric telescopic rod 301 continues to extend slightly. At this time, the fixed rod 304 will slide along the horizontal rod 303 and compress the first spring 305. Relying on the buffering force of the first spring 305, the valve body can be firmly clamped, and the excessive clamping force can be avoided to damage the surface of the valve body. At the same time, this clamping structure is suitable for valve bodies of different sizes. S2. While clamping, the horizontal rod 303 will drive the push block 501 to move synchronously. When the valve body is clamped in place, the push block 501 will fit against the inclined groove 504 of the linkage block 503 and slide upward along the trajectory of the inclined groove 504, driving the horizontal rod 303 to move upward as a whole and lift the clamped valve body, so that the bottom of the valve body is raised and detached from the mesh plate 402, providing downward overtravel space for the wire bundle grinding head 209 and preventing the edge of the mesh plate 402 from interfering with the movement of the grinding head. S3. After the valve body is aligned and lifted into position, the limiting rod 505 on the push block 501 will automatically align with the limiting groove 507 on the fixed rod 304. The linkage block 503 will push the limiting rod 505 at the conical end into the limiting groove 507, locking the horizontal rod 303 and the fixed rod 304 to ensure that the valve body will not shake or shift during the subsequent high-speed grinding process. S4. After the valve body is clamped and locked, start the stepper motor 103. The stepper motor 103 drives the mounting ring 102 to rotate smoothly through the gear set 104, and transfer the fixed valve body to the bottom of the grinding assembly 2 to complete the docking of the processing station. Then, control the first electric push rod 202 on the mounting frame 201 to extend downward, driving the frame 203, grinding motor 204 and vertical rod 205 to move down as a whole, so that the steel wire bundle grinding head 209 at the bottom of the vertical rod 205 slowly extends into the valve body. S5. After the grinding head enters the valve body, the second electric push rod 210 is activated to extend it. The originally taut connecting rope 211 will become loose. At this time, the constant force spring 208 in the compressed state will automatically extend and push the symmetrically arranged mounting rod 207 to slide to both sides, so that the wire bundle grinding head 209 fits tightly against the inner wall of the valve body. Then, the grinding motor 204 is turned on. The motor drives the wire bundle grinding head 209 to rotate at high speed through the vertical rod 205, mounting block 206, and mounting rod 207 to grind the inner wall of the valve body. Relying on the adaptive elasticity of the constant force spring 208, the grinding head will always fit against the inner wall of the valve body. Even if there is a slight deviation in the diameter of the inner wall of the valve body, it can be ground in one go, which can adapt to the grinding needs of valve bodies of different sizes. S6. During the entire grinding process, the air pump 404 can be turned on simultaneously. After the installation ring 102 is rotated into place, the dust removal port 401 on the ring body will be precisely connected with the connection port 405 of the processing table 101. The air pump 404 continuously draws in air, and the iron filings and debris generated during grinding will pass through the mesh plate 402 and be drawn into the filter box 403 through the dust removal port 401 and the connection port 405 for unified collection and processing. S7. After the grinding of a single valve body is completed, the second electric push rod 210 retracts, pulling the connecting rope 211 to tighten, causing the mounting rods 207 on both sides and the wire bundle grinding head 209 to move closer together, allowing the grinding head to detach from the inner wall of the valve body. Then, the first electric push rod 202 retracts, causing the entire grinding assembly 2 to move upward and completely leave the valve body. Next, the stepper motor 103 starts again, causing the mounting ring 102 to rotate, turning the ground valve body out of the grinding station. At the same time, the new valve body to be ground is transferred to the grinding station. After the ground valve body is turned away from the grinding station, the clamping assembly releases the clamp on the valve body. When the ground valve body is transferred to the unloading station, the third electric push rod 601 on the control processing table 101 extends, causing the push plate 602 to move forward, smoothly pushing the valve body into the detachable collection box 603.

[0038] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. An internal wall grinding device for manufacturing ship check valves, comprising a processing table (101), characterized in that: A mounting ring (102) is rotatably mounted on the processing table (101). A clamping assembly for clamping the valve body is provided on the mounting ring (102). A stepper motor (103) is fixedly mounted on the processing table (101). A gear set (104) is installed between the rotating shaft of the stepper motor (103) and the mounting ring (102). A grinding assembly (2) is provided on the processing table (101). The grinding assembly (2) includes a mounting bracket (201) fixedly mounted on a processing table (101). A first electric push rod (202) is fixedly mounted on the mounting bracket (201). A frame (203) is fixedly mounted on the output end of the first electric push rod (202). A grinding motor (204) is fixedly mounted on the frame (203). A vertical rod (205) is fixedly mounted on the output end of the grinding motor (204). A mounting block (206) is fixedly mounted on the vertical rod (205). A mounting rod (207) is symmetrically slidably mounted on the mounting block (206). A constant force spring (208) is installed between the mounting rod (207) and the mounting block (206). A wire bundle grinding head (209) is fixedly mounted on the end of the mounting rod (207) away from the mounting block (206). A second electric push rod (210) is fixedly mounted on the vertical rod (205). A connecting rope (211) that is fixedly connected to the mounting rod (207) is fixedly mounted on the output end of the second electric push rod (210).

2. The inner wall grinding equipment for manufacturing ship check valves according to claim 1, characterized in that: The clamping assembly includes an electric telescopic rod (301) uniformly fixedly mounted on a mounting ring (102). A mounting plate (302) is fixedly mounted on the output end of the electric telescopic rod (301). A horizontal rod (303) is provided on the mounting plate (302). A fixed rod (304) is slidably mounted on the horizontal rod (303). A first spring (305) is installed between the fixed rod (304) and the horizontal rod (303). A clamping plate (306) is fixedly mounted on the end of the fixed rod (304) away from the horizontal rod (303).

3. The inner wall grinding equipment for manufacturing ship check valves according to claim 2, characterized in that: The mounting ring (102) is provided with a dust removal port (401), a mesh plate (402) is fixedly installed inside the dust removal port (401), a filter box (403) is fixedly installed on the processing table (101), an air pump (404) is fixedly installed on the side wall of the filter box (403), and a communication port (405) communicating with the filter box (403) is provided on the processing table (101).

4. The inner wall grinding equipment for manufacturing ship check valves according to claim 3, characterized in that: A push block (501) is fixedly installed on the horizontal rod (303). A vertical groove is provided on the mounting plate (302), and the horizontal rod (303) is vertically slidably installed in the vertical groove. A second spring (502) is installed between the horizontal rod (303) and the vertical groove. A linkage block (503) that cooperates with the push block (501) is fixedly installed on the mounting ring (102). An inclined groove (504) is provided on the linkage block (503).

5. The inner wall grinding equipment for manufacturing ship check valves according to claim 4, characterized in that: A limiting rod (505) is slidably installed on the push block (501). A third spring (506) is installed between the limiting rod (505) and the push block (501). A limiting groove (507) that cooperates with the limiting rod (505) is provided on the fixing rod (304).

6. The inner wall grinding equipment for manufacturing ship check valves according to claim 1, characterized in that: A third electric push rod (601) is fixedly installed on the processing table (101), a push plate (602) is fixedly installed on the output end of the third electric push rod (601), and a collection box (603) is detachably installed on the processing table (101).

7. The inner wall grinding equipment for manufacturing ship check valves according to claim 2, characterized in that: An anti-slip pad (701) is fixedly installed on the side wall of the clamping plate (306) away from the fixing rod (304).

8. The inner wall grinding equipment for manufacturing ship check valves according to claim 1, characterized in that: The mounting block (206) is symmetrically and rotatably mounted with guide wheels (702) that cooperate with the connecting rope (211).

9. The inner wall grinding equipment for manufacturing ship check valves according to claim 5, characterized in that: The end of the limiting rod (505) near the limiting groove (507) is tapered.

10. A grinding method applicable to the inner wall grinding equipment used in the manufacturing of a ship check valve according to any one of claims 1-9, characterized in that, Includes the following steps: S1. After the equipment is started, the electric telescopic rod (301) on the control mounting ring (102) extends outward, causing the mounting plates (302) on both sides to slowly move closer to each other. As the mounting plates (302) move, the clamping plates (306) at both ends will move synchronously closer to the valve body and automatically align the valve body position through the horizontal rod (303) and the fixed rod (304). After the valve body is aligned, the electric telescopic rod (301) continues to extend slightly. At this time, the fixed rod (304) will slide along the horizontal rod (303) and compress the first spring (305). Relying on the buffer elastic force of the first spring (305), the valve body can be firmly clamped, and the clamping force can be avoided from damaging the valve body surface due to excessive clamping force. At the same time, this clamping structure is suitable for valve bodies of different sizes. S2. While clamping, the horizontal rod (303) will drive the push block (501) to move synchronously. When the valve body is clamped in place, the push block (501) will fit against the inclined groove (504) of the linkage block (503) and slide upward along the trajectory of the inclined groove (504), driving the horizontal rod (303) to move upward as a whole and lift the clamped valve body, so that the bottom of the valve body is raised and detached from the mesh plate (402), providing downward overtravel space for the wire bundle grinding head (209) and preventing the edge of the mesh plate (402) from interfering with the movement of the grinding head. S3. After the valve body is aligned and lifted into position, the limiting rod (505) on the push block (501) will automatically align with the limiting groove (507) on the fixed rod (304). The linkage block (503) will push the limiting rod (505) at the conical end into the limiting groove (507), locking the horizontal rod (303) and the fixed rod (304) to ensure that the valve body will not shake or shift during the subsequent high-speed grinding process. S4. After the valve body is clamped and locked, start the stepper motor (103). The stepper motor (103) drives the mounting ring (102) to rotate smoothly through the gear set (104), and transfer the fixed valve body to the bottom of the grinding assembly (2) to complete the docking of the processing station. Then, control the first electric push rod (202) on the mounting frame (201) to extend downward, drive the frame (203), grinding motor (204), and vertical rod (205) to move down as a whole, so that the steel wire bundle grinding head (209) at the bottom of the vertical rod (205) slowly extends into the valve body. S5. After the grinding head enters the valve body, the second electric push rod (210) is activated to extend it. The originally taut connecting rope (211) will become loose. At this time, the constant force spring (208) in the compressed state will automatically extend and push the symmetrically arranged mounting rod (207) to slide to both sides, so that the wire bundle grinding head (209) fits tightly against the inner wall of the valve body. Then the grinding motor (204) is turned on. The motor drives the wire bundle grinding head (209) to rotate at high speed through the vertical rod (205), mounting block (206), and mounting rod (207) to grind the inner wall of the valve body. Relying on the adaptive elasticity of the constant force spring (208), the grinding head will always fit against the inner wall of the valve body. Even if there is a slight deviation in the diameter of the inner wall of the valve body, it can be ground in one go, which can adapt to the grinding needs of valve bodies of different sizes. S6. The air pump (404) can be turned on simultaneously during the entire grinding process. After the installation ring (102) is rotated into place, the dust removal port (401) on the ring body will be precisely connected with the connection port (405) of the processing table (101). The air pump (404) continuously draws in air, and the iron filings and debris generated during grinding will pass through the mesh plate (402) and be sucked into the filter box (403) for unified collection and treatment via the dust removal port (401) and the connection port (405). S7. After the single valve body is polished, the second electric push rod (210) retracts first, pulls the connecting rope (211) to tighten, and drives the mounting rods (207) on both sides and the wire bundle grinding head (209) to come closer to each other, so that the grinding head is separated from the inner wall of the valve body. Then the first electric push rod (202) retracts, drives the entire polishing assembly (2) to move up and completely leave the valve body. Then the stepper motor (103) starts again, drives the mounting ring (102) to rotate, and turns the polished valve body out of the polishing station. At the same time, the new valve body to be polished is transferred to the polishing station. After the polished valve body is turned away from the polishing station, the clamping assembly releases the clamp on the valve body. When the polished valve body is transferred to the unloading station, the third electric push rod (601) on the control processing table (101) extends, drives the push plate (602) to move forward, and pushes the valve body smoothly into the detachable collection box (603).

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