Grinding equipment for producing and processing double eccentric rotary ball valve and processing method thereof

Abstract

The application relates to the technical field of grinding equipment, in particular to grinding equipment for double-eccentric rotary ball valve production and machining and a machining method thereof, which comprises an operation table, a double-shaft mechanical arm, a cooling pipe and an electric grinder are arranged in the operation table, the cooling pipe is installed on an output flange of the double-shaft mechanical arm, a washing bin is arranged in the operation table, a machining table is arranged in the washing bin, and the machining table is flush with the top end of the washing bin. The workpiece is cleaned and cooled by being sunk in waste liquid in situ, the running of a pneumatic disturbance assembly and a splash-proof linkage assembly is synchronously triggered by the sinking action, three processes of chip cleaning, cooling and splash-proofing after traditional grinding are compressed into one pure mechanical linkage cycle, the independent cleaning station and the transfer link are omitted, the cleaning medium is directly reused for grinding waste liquid, the consumption of the cooling liquid and the sewage discharge amount are greatly reduced, and the equipment structure is compact and the rhythm is efficient.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment technology, and in particular to a grinding equipment and processing method for the production and processing of double eccentric rotary ball valves. Background Technology

[0002] The double eccentric rotary ball valve is a new type of valve that combines the superior sealing performance of a ball valve with the structural advantages of a butterfly valve. Essentially, it is a butterfly-structured eccentric hemispherical valve. This valve adopts the double eccentric wedge clamping principle. The valve stem is rotated 90° by the drive device, which simultaneously drives the opening and closing element (valve plate) to realize the opening and closing of the valve. Since the valve plate is mostly a sloping conical surface or an irregular curved surface, its surface roughness and contour accuracy directly determine the valve's sealing performance. Therefore, grinding is crucial. In the context of intelligent manufacturing, grinding equipment is being upgraded towards adaptive compensation, in-situ detection, and self-decision-making of process parameters. Through integrated digital closed-loop management, the first-pass yield is improved while ensuring high precision and low roughness of the sealing surface.

[0003] However, under actual grinding conditions, the high-speed friction between the grinding wheel and the valve plate sealing surface will instantly generate a large number of fine metal shavings. These shavings are extremely light and easily adhere to the workpiece surface. The currently commonly used negative pressure adsorption method for adsorbing shavings has its suction port fixed at the near end of the grinding zone, but its ability to capture shavings attached at the far end is limited. While the fixed-point blowing method can forcibly remove local attachments, it is easy to blow the shavings into deeper hidden gaps and narrow dead corners, and form secondary dust pollution. Therefore, this application proposes a grinding equipment and processing method for the production and processing of double eccentric rotary ball valves. Summary of the Invention

[0004] The purpose of this invention is to address the problem of difficult cleaning of grinding debris in the prior art, and to propose a grinding equipment and processing method for the production and processing of double eccentric rotary ball valves.

[0005] In a first aspect, the present invention provides a grinding device for manufacturing and processing double eccentric rotary ball valves, comprising an operating table, wherein the operating table is internally equipped with a dual-axis robotic arm, a cooling pipe, and an electric grinder, the cooling pipe being mounted on the output flange of the dual-axis robotic arm, and further comprising: A washing chamber is located inside the operating table. The washing chamber is equipped with a processing table, which is flush with the top of the washing chamber. The surface of the processing table is equipped with a pair of waterproof automatic grippers for gripping double eccentric rotary ball valves. The lifting mechanism has its output end passing through the bottom of the washing tank and connected to the processing table via a transmission, which is used to drive the processing table to lift. An exhaust pipe, connected to the processing table, is used to transport gas and liquid. A pneumatic disturbance component is connected to the end of the exhaust pipe. When the processing table moves down, the pneumatic disturbance component is squeezed by the bottom surface of the washing chamber to compress the gas, and then sprays it onto the workpiece through the exhaust pipe. The splash-proof linkage component includes a lifting rectangular trough and a rectangular baffle. The lifting rectangular trough is located at the top of the washing chamber, and the rectangular baffle is slidably connected inside the lifting rectangular trough. The splash-proof linkage component is used to pull the rectangular baffle up when the processing table moves down, thereby increasing the enclosed area of ​​the washing chamber.

[0006] Optionally, the lifting mechanism includes a hydraulic cylinder and a circular bellows. The hydraulic cylinder is installed inside the operating table, and the output end of the hydraulic cylinder is connected to the bottom end of the processing table. The circular bellows is sleeved on the outside of the output end of the hydraulic cylinder, and the two ends of the circular bellows are respectively fixed to the bottom end of the inner wall of the washing chamber and the bottom end of the processing table to form a dynamic seal.

[0007] Optionally, the pneumatic disturbance assembly includes a buffer plate, a rectangular bellows, and a return spring. The buffer plate is fixed to the side of the processing table, the rectangular bellows is fixed to the bottom end of the buffer plate, the side of the rectangular bellows is connected to the air outlet pipe, the end of the air outlet pipe away from the rectangular bellows is bent and faces the workpiece area between the automatic grippers, and the two ends of the return spring are fixed to the top and bottom ends of the inner wall of the rectangular bellows, respectively.

[0008] Optionally, the splash-proof linkage assembly further includes a side plate, a traction rope, and a guide wheel. The side plate is fixed to the side of the processing table, the two ends of the traction rope are fixed to the top of the side plate and the top of the rectangular baffle, respectively, and the guide wheel is fixed inside the operating table. The traction rope passes around the guide wheel to change the direction of force application.

[0009] Optionally, overflow holes are symmetrically provided on the sides of the washing chamber and the rectangular baffle. The height of the overflow holes is lower than the highest position of the processing table and higher than the lowest position of the processing table, in order to maintain a constant liquid level in the washing chamber.

[0010] Optionally, the processing table has multiple sets of leakage holes connected to the table surface, allowing coolant to pass through and collect at the bottom of the washing chamber.

[0011] Optionally, the dual-axis robotic arm is an XY-axis Cartesian coordinate machine, and the electric grinder is mounted on the output flange of the dual-axis robotic arm.

[0012] Optionally, T-shaped sliders are fixed to both sides of the processing table, and T-shaped grooves are symmetrically opened on the inner wall of the washing chamber. The T-shaped sliders are slidably connected to the inside of the T-shaped grooves to constrain the movement trajectory of the processing table.

[0013] Optionally, both the circular and rectangular corrugated pipes are made of corrosion-resistant rubber, and the traction rope is made of fire-resistant and high-temperature resistant aramid rope.

[0014] Secondly, the present invention provides a method for manufacturing a double eccentric rotary ball valve, applied to a grinding equipment for manufacturing a double eccentric rotary ball valve as described in the first aspect. The method includes the following steps: S1. Grinding process: The workpiece is placed on the processing table and clamped by the automatic clamper. The processing table is in the highest position. The dual-axis robotic arm drives the electric grinder to grind the workpiece. Cooling pipes spray coolant synchronously. Waste liquid carrying chips flows into the washing chamber through the leakage hole. S2. The tool retracts and the workpiece sinks. After grinding is completed, the dual-axis robotic arm retracts the tool, the hydraulic cylinder retracts, and the processing table moves vertically downward along the T-shaped slider and T-shaped groove. The circular bellows is compressed and sealed, and the entire workpiece sinks into the liquid in the washing chamber. S3. Anti-splash and pneumatic turbulence cleaning: When the processing table moves down, the side plate lifts the rectangular baffle to prevent splashing by pulling the traction rope. At the same time, the buffer plate compresses the rectangular bellows and the return spring. The gas is sprayed onto the workpiece through the air outlet to form turbulence. The waste liquid washes the workpiece from all directions, removes the grinding debris and cools it down. S4. Reset: After cleaning, the hydraulic cylinder extends to lift the processing table back to its original position, the circular bellows extends, the rectangular baffle falls down by its own weight, and the rectangular bellows rebounds and draws in air under the action of the reset spring, preparing for the next cycle.

[0015] Compared with the prior art, this application includes at least one of the following beneficial technical effects: This invention achieves cleaning and cooling by immersing the workpiece in situ into waste liquid. The sinking action simultaneously triggers the operation of the pneumatic disturbance component and the anti-splash linkage component. This compresses the three processes of chip removal, cooling and anti-splashing that traditionally require separate treatment after grinding into a purely mechanical linkage cycle. This not only eliminates the need for separate cleaning stations and transfer links, but also allows the grinding waste liquid to be reused directly as the cleaning medium, which greatly reduces coolant consumption and sewage discharge, making the equipment compact and highly efficient.

[0016] Furthermore, the pneumatic disturbance component compresses and ejects air during descent and rebounds and draws in air during ascent, forming a self-priming and self-spraying non-powered gas-liquid pulse cycle. Especially when the outlet is still immersed in the liquid, the resetting intake will draw in coolant, and when compressed again, the gas and liquid are mixed and ejected, generating a stronger gas-liquid two-phase pulse scouring than simple airflow or liquid flow. The ability to peel off stubborn wear debris in the grooves and gaps of the sealing surface is significantly better than conventional immersion or negative pressure adsorption, effectively improving the cleaning effect. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of a grinding equipment for manufacturing and processing double eccentric rotary ball valves; Figure 2 A partial structural schematic diagram of a grinding equipment used in the production and processing of double eccentric rotary ball valves; Figure 3 This is a structural diagram of the washing chamber and hydraulic cylinder; Figure 4 This is a structural diagram of the machining table and overflow hole; Figure 5 This is a cross-sectional schematic diagram of the washing chamber and the circular corrugated pipe; Figure 6 This is a partial plan view of a grinding equipment used in the production and processing of double eccentric rotary ball valves. Figure 7 This is a cross-sectional schematic diagram of a rectangular corrugated pipe; Figure 8 This is a schematic diagram of the splash-proof linkage component; Figure 9 This is a schematic diagram of the motion state of the rectangular baffle.

[0018] Reference numerals: 1. Control panel; 2. Dual-axis robotic arm; 3. Electric grinder; 4. Washing chamber; 5. Machining table; 51. Leakage hole; 52. T-shaped slider; 53. T-shaped groove; 6. Automatic gripper; 7. Lifting mechanism; 71. Hydraulic cylinder; 72. Circular bellows; 8. Air outlet pipe; 9. Pneumatic disturbance assembly; 91. Buffer plate; 92. Rectangular bellows; 93. Return spring; 10. Splash-proof linkage assembly; 101. Rectangular baffle; 102. Side plate; 103. Traction rope; 104. Guide wheel; 105. Lifting rectangular slot; 11. Overflow hole; 12. Cooling pipe. Detailed Implementation

[0019] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0020] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0021] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1 and Figure 2 As shown, the present invention proposes a grinding equipment for the production and processing of double eccentric rotary ball valves, including an operating table 1. The operating table 1 is a rigid frame welded structure with internal partitioned chambers, and serves as the support frame for the entire machine. The operating table 1 contains a dual-axis robotic arm 2, a cooling pipe 12, and an electric grinder 3. The cooling pipe 12 is mounted on the output flange of the dual-axis robotic arm 2. The dual-axis robotic arm 2 provides precise feed and positioning for the cooling pipe 12 and the electric grinder 3. The cooling pipe 12, as a mature existing technology, is mainly used to transport grinding coolant. The dual-axis robotic arm 2 is an XY-axis Cartesian coordinate machine. The electric grinder 3 is mounted on the output flange of the dual-axis robotic arm 2. The electric grinder 3 is also a mature existing technology and is mainly used to grind the workpiece, which in this embodiment refers to the double eccentric rotary ball valve. Before grinding, the dual-axis robotic arm 2 drives the electric grinder 3 to move above the workpiece according to the CNC program, and the cooling pipe 12 moves to the working position. During the grinding process, the dual-axis robotic arm 2 performs interpolation motion in the XY direction along the predetermined path to complete the grinding feed of the sealing surface of the double eccentric rotary ball valve. Since the dual-axis robotic arm 2 is existing technology, the detailed functions of the dual-axis robotic arm 2 will not be elaborated in this embodiment.

[0023] As one implementation method, such as Figure 1 - Figure 5 As shown, the grinding equipment also includes a washing chamber 4, which is located inside the operating table 1. The washing chamber 4 is an open-top box, sealed with welded edges and bottom to form a container for holding liquid, receiving the cooling liquid sprayed during grinding, and providing space for immersing the workpiece. A processing table 5 is located inside the washing chamber 4, flush with the top of the washing chamber 4. During grinding, the processing table 5 is at its highest position, with its upper surface flush with the top of the washing chamber 4. The workpiece is placed on the surface of the processing table 5. A pair of waterproof automatic clamps 6 are provided on the surface of the processing table 5 for clamping double eccentric rotary ball valves. The automatic clamps 6 can... Using any commercially available automatic clamping device, once the workpiece is on the surface of the processing table 5, the automatic clamping device 6 can clamp the workpiece double eccentric rotary ball valve. Then, the dual-axis robotic arm 2 drives the electric grinder 3 to grind the sealing surface of the workpiece according to the set trajectory. The processing table 5 has multiple sets of leakage holes 51 connected to the table surface, which are used to allow coolant to pass through and collect at the bottom of the washing chamber 4. The cooling pipe 12 sprays coolant into the grinding area simultaneously. The coolant and grinding debris sprayed from the cooling pipe 12 fall onto the table surface of the processing table 5 and leak directly into the washing chamber 4 under the action of gravity through the leakage holes 51, and collect at the bottom of the washing chamber 4.

[0024] Furthermore, such as Figure 3 - Figure 7 As shown, the grinding equipment also includes a lifting mechanism 7 and an exhaust pipe 8. The output end of the lifting mechanism 7 passes through the bottom of the washing chamber 4 and is connected to the processing table 5 for driving the processing table 5 to rise and fall. After grinding is completed, the dual-axis robotic arm 2 retracts to the safe position, and then the lifting mechanism 7 drives the processing table 5 and the workpiece to move down as a whole, immersing them in the coolant accumulated in the washing chamber 4. At this time, the coolant in the washing chamber 4 can carry away the metal shavings attached to the surface of the workpiece through the flow of the liquid. At the same time, when the workpiece after high-temperature friction comes into contact with the low-temperature coolant, it can also be physically cooled, thereby avoiding the situation where the operator is easily burned by high temperature; exhaust pipe 8. Pipe 8 is connected to the processing table 5 and is used to transport gas and liquid. The exhaust pipe 8 is a metal pipe, and the end of the exhaust pipe 8 is connected to a pneumatic disturbance component 9. When the processing table 5 moves down, the pneumatic disturbance component 9 is squeezed by the bottom surface of the washing chamber 4 and compresses the gas. The gas is then sprayed onto the workpiece through the exhaust pipe 8. The pneumatic disturbance component 9 passively generates airflow by sinking, forming bubble pulsation in the water or blowing at the liquid surface to enhance the cleaning effect. During the process of the processing table 5 moving down, the bottom of the pneumatic disturbance component 9 touches the bottom surface of the washing chamber 4 and is compressed. The internal gas is released near the workpiece through the exhaust pipe 8, forming disturbed bubbles or liquid surface impact airflow to enhance the removal of debris.

[0025] Furthermore, such as Figure 8 and Figure 9 As shown, this embodiment also includes a splash-proof linkage component 10, which includes a lifting rectangular slot 105, a rectangular baffle 101, a side plate 102, a traction rope 103, and a guide wheel 104. The splash-proof linkage component 10 is described in detail below: The lifting rectangular groove 105 is located at the top of the washing chamber 4. The rectangular baffle 101 is slidably connected inside the lifting rectangular groove 105. The rectangular baffle 101 can move up and down along the inside of the lifting rectangular groove 105. The side plate 102 is fixed to the side of the processing table 5. When the processing table 5 moves down, the side plate 102 fixed to the side moves down accordingly. The two ends of the traction rope 103 are fixed to the top of the side plate 102 and the top of the rectangular baffle 101, respectively. The guide wheel 104 is fixed inside the operating table 1. The top of the side plate 102 pulls down one end of the traction rope 103. The traction rope 103 passes around the guide wheel 104 to change the direction of force. The traction rope 103 slides and changes direction on the guide wheel 104. The other end of the traction rope 103 pulls up the top of the rectangular baffle 101. After being subjected to force, the rectangular baffle 101 slides vertically upward along the lifting rectangular groove 105 (e.g., Figure 9 As shown), this expands the enclosure height of the washing chamber 4 to prevent liquid from splashing out. When the processing table 5 rises, the side plate 102 moves upward, the traction rope 103 loosens, and the rectangular baffle 101 slides down the lifting rectangular groove 105 under its own gravity to reset to its original height, completing one work cycle.

[0026] As one implementation method, such as Figure 3 , Figure 4 and Figure 5 As shown, the lifting mechanism 7 includes a hydraulic cylinder 71 and a circular bellows 72. The lifting mechanism 7 is described in detail below: The hydraulic cylinder 71 is installed inside the operating table 1, and the output end of the hydraulic cylinder 71 is connected to the bottom end of the processing table 5. When the processing table 5 needs to be lowered, the hydraulic cylinder 71, as a mature existing technology, enters the rod chamber, the piston rod retracts, and the processing table 5 is dragged vertically downward. The circular bellows 72 is sleeved on the outside of the output end of the hydraulic cylinder 71, and the two ends of the circular bellows 72 are fixed to the bottom end of the inner wall of the washing chamber 4 and the bottom end of the processing table 5, respectively, forming a dynamic seal. At this time, the circular bellows 72 is axially compressed, and its folds are evenly folded, always separating the output rod of the hydraulic cylinder 71 from the liquid in the washing chamber 4, preventing coolant from leaking through the sliding part between the hydraulic cylinder 71 and the washing chamber 4. When the cleaning is completed and needs to be reset, the rodless chamber of the hydraulic cylinder 71 enters the oil, the piston rod extends, the processing table 5 is lifted, and the circular bellows 72 extends accordingly, returning to its original shape and continuing to maintain the seal.

[0027] Furthermore, such as Figure 5 , Figure 6 and Figure 7 As shown, the pneumatic disturbance assembly 9 includes a buffer plate 91, a rectangular bellows 92, and a return spring 93. The pneumatic disturbance assembly 9 is described in detail below: The buffer plate 91 is fixed to the side of the processing table 5. When the processing table 5 moves down, the buffer plate 91 fixed to the side moves down accordingly. The rectangular bellows 92 is fixed to the bottom end of the buffer plate 91. The movement of the buffer plate 91 will drive the rectangular bellows 92 to move synchronously. The bottom end of the rectangular bellows 92 gradually contacts and presses against the bottom surface of the washing chamber 4. The rectangular bellows 92 is axially compressed, and its internal volume decreases. The two ends of the return spring 93 are fixed to the top and bottom ends of the inner wall of the rectangular bellows 92, respectively. The return spring 93 is compressed at the same time, generating elastic potential energy. The side of the rectangular bellows 92 is connected to the air outlet pipe 8. The end of the air outlet pipe 8 away from the rectangular bellows 92 is bent and faces the workpiece area between the automatic clamps 6. The gas pressure inside the rectangular bellows 92 increases and is discharged at high speed through the air outlet pipe 8 connected to the side. The airflow is sprayed onto the workpiece surface from the bent outlet of the air outlet pipe 8. The process involves creating scouring bubbles underwater or assisting in sweeping at the water surface. When the processing table 5 rises, the buffer plate 91 is also lifted, causing the bottom end of the rectangular bellows 92 to detach from the bottom surface of the washing chamber 4. Under the elastic force of the return spring 93 and the self-rebound action of the rectangular bellows 92 rubber, the rectangular bellows 92 automatically extends and returns to its original position, generating negative pressure inside. Air is drawn in from the outside through the exhaust pipe 8, preparing for the next compression and jetting. It should be noted that when the rectangular bellows 92 generates negative pressure, the exhaust pipe 8 may still be in liquid. At this time, the negative pressure will draw coolant into the interior of the exhaust pipe 8, eventually entering the interior of the rectangular bellows 92. Then, when the rectangular bellows 92 is compressed again, some of the liquid inside will mix with air and be discharged. The discharged liquid mixes and impacts with the liquid inside the washing chamber 4, further enhancing the turbulence of the liquid and improving the effect of debris removal.

[0028] Furthermore, such as Figure 4 and Figure 8 As shown, the washing chamber 4 and the rectangular baffle 101 are symmetrically provided with overflow holes 11 on their sides. The height of the overflow holes 11 is lower than the highest position of the processing table 5 and higher than the lowest position of the processing table 5. It is used to maintain a constant liquid level in the washing chamber 4. During the grinding process, the cooling pipe 12 continuously injects coolant into the washing chamber 4, and the liquid level gradually rises. When the liquid level reaches the lower edge of the overflow hole 11, the excess liquid flows out from the overflow hole 11, maintaining the liquid level stable at the height of the overflow hole 11, controlling the liquid level in the washing chamber 4 below the safe height, preventing overflow and ensuring that the workpiece can be completely submerged during immersion.

[0029] As one implementation method, such as Figure 8 and Figure 9As shown, T-shaped sliders 52 are fixed to both sides of the processing table 5. During the entire vertical movement of the processing table 5, the processing table 5 will drive the T-shaped sliders 52 to move synchronously. T-shaped grooves 53 are symmetrically opened on the inner wall of the washing chamber 4. The T-shaped sliders 52 are slidably connected to the inside of the T-shaped grooves 53 to constrain the movement trajectory of the processing table 5. The T-shaped sliders 52 always slide within the T-shaped grooves 53, restricting the processing table 5 to only move in the vertical direction without swinging or jamming, ensuring that the processing table 5 rises and falls smoothly.

[0030] Furthermore, such as Figure 5 and Figure 9 Both the circular corrugated pipe 72 and the rectangular corrugated pipe 92 are made of corrosion-resistant rubber. The corrosion-resistant rubber material ensures that the circular corrugated pipe 72 and the rectangular corrugated pipe 92 still have stable physical properties under long-term contact with coolant and temperature changes. The traction rope 103 is a fire-resistant and high-temperature resistant aramid rope. The fire-resistant and high-temperature resistant aramid rope can maintain its strength under high-temperature friction environment and has high strength, low elongation and flame-retardant properties.

[0031] A method for manufacturing a double eccentric rotary ball valve, the method comprising the following steps: S1. Grinding process: The workpiece is placed on the processing table 5 and clamped by the automatic clamp 6. The processing table 5 is in the highest position. The dual-axis robotic arm 2 drives the electric grinder 3 to grind the workpiece. The cooling pipe 12 sprays coolant synchronously. The waste liquid carrying chips flows into the washing chamber 4 through the leakage hole 51. S2. The tool retracts and the workpiece sinks. After grinding is completed, the dual-axis robotic arm 2 retracts the tool, the hydraulic cylinder 71 retracts, and the processing table 5 moves vertically downward along the T-shaped slider 52 and the T-shaped groove 53. The circular bellows 72 is compressed and sealed, and the entire workpiece sinks into the liquid in the washing chamber 4. S3, splash prevention and pneumatic turbulence cleaning: When the processing table 5 moves down, the side plate 102 lifts the rectangular baffle 101 to prevent splashing by pulling the traction rope 103. At the same time, the buffer plate 91 compresses the rectangular bellows 92 and the return spring 93. The gas is sprayed onto the workpiece through the air outlet pipe 8 to form turbulence. The waste liquid washes the workpiece from all directions, removes the grinding debris and cools it down. S4. Reset: After cleaning, the hydraulic cylinder 71 extends and lifts the processing table 5 back to its original position. The circular bellows 72 extends, and the rectangular baffle 101 falls down by its own weight. The rectangular bellows 92 rebounds and draws air under the action of the reset spring 93, preparing for the next cycle.

[0032] In this embodiment, during the grinding process, the processing table 5 is at its highest position, with its upper surface flush with the top of the washing chamber 4. The double eccentric rotary ball valve workpiece is placed on the surface of the processing table 5 and clamped by a pair of waterproof automatic clamps 6. Subsequently, the electric grinder 3 installed on the output flange of the dual-axis robotic arm 2 grinds the sealing surface of the workpiece according to a set trajectory under the follow of the cooling pipe 12. The cooling pipe 12 sprays coolant into the grinding area simultaneously. The coolant carrying the grinding debris falls onto the surface of the processing table 5 and leaks into the washing chamber 4 under the action of gravity through multiple sets of leakage holes 51 opened inside the processing table 5, and collects at the bottom of the washing chamber 4. After grinding, the dual-axis robotic arm 2 retracts to the safe position, oil enters the rod chamber of the hydraulic cylinder 71 in the lifting mechanism 7, the piston rod retracts, and the machining table 5 is dragged to move smoothly down along the vertical trajectory constrained by the T-shaped slider 52 and the T-shaped groove 53. The circular bellows 72 sleeved on the outside of the output end of the hydraulic cylinder 71 is axially compressed, maintaining a dynamic seal at all times. When the machining table 5 moves down, the side plate 102 fixed to the side moves down synchronously, pulling down one end of the traction rope 103. After the traction rope 103 passes around the guide wheel 104 and reverses direction, it lifts the top of the rectangular baffle 101 upward, causing the rectangular baffle 101 to slide upward along the lifting rectangular groove 105, increasing the enclosure height of the washing chamber 4 to prevent liquid from splashing out. At the same time, the side plate fixed to the side of the machining table 5... The buffer plate 91 moves downwards, causing the bottom end of the rectangular corrugated pipe 92 to contact and press against the bottom surface of the washing chamber 4. The rectangular corrugated pipe 92 is axially compressed, and the return spring 93 inside is compressed and stored at the same time. The gas pressure inside the pipe increases and is discharged at high speed through the exhaust pipe 8 connected to the side. The airflow is sprayed onto the surface of the workpiece from the bend outlet of the exhaust pipe 8, forming turbulent bubbles or liquid surface impact airflow underwater, which enhances the removal of debris. The processing table 5 moves the entire workpiece down and immerses it in the coolant accumulated in the washing chamber 4. The coolant thoroughly washes the workpiece, removing the metal shavings attached to the surface, and at the same time physically cools the high-temperature workpiece. When the liquid level reaches the lower edge of the overflow hole 11, the excess liquid flows out from the overflow hole 11, maintaining a constant liquid level in the washing chamber 4. After cleaning and cooling are completed, oil enters the rodless chamber of hydraulic cylinder 71, the piston rod extends, the lifting processing table 5 rises back to the grinding high position, the circular bellows 72 extends and returns to its original shape, and the bottom end of the rectangular bellows 92 detaches from the bottom surface of the washing chamber 4. Under the elastic force of the return spring 93 and the rebound of the rubber itself, it automatically extends and returns to its original position, generating negative pressure inside. Air is drawn in from the outside through the air outlet pipe 8 or a small amount of coolant is drawn in at the same time to prepare for the next extrusion and jetting. The traction rope 103 is loosened, and the rectangular baffle 101 slides down along the lifting rectangular groove 105 and returns to its original position under its own gravity, thus completing a complete work cycle.

[0033] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A grinding equipment for manufacturing and processing double eccentric rotary ball valves, comprising an operating table (1), wherein the operating table (1) is internally provided with a dual-axis robotic arm (2), a cooling pipe (12), and an electric grinder (3), wherein the cooling pipe (12) is mounted on the output flange of the dual-axis robotic arm (2), characterized in that, Also includes: The washing chamber (4) is located inside the operating table (1). The washing chamber (4) is equipped with a processing table (5). The processing table (5) is flush with the top of the washing chamber (4). The surface of the processing table (5) is equipped with a pair of waterproof automatic clamps (6) for clamping the double eccentric rotary ball valve. The lifting mechanism (7) has its output end passing through the bottom of the washing chamber (4) and connected to the processing table (5) for driving the processing table (5) to lift. The exhaust pipe (8) is connected to the processing table (5) and is used to transport gas and liquid. The end of the exhaust pipe (8) is connected to a pneumatic disturbance component (9). When the processing table (5) moves down, the pneumatic disturbance component (9) is squeezed by the bottom surface of the washing chamber (4) to compress the gas and sprays it onto the workpiece through the exhaust pipe (8). The splash-proof linkage component (10) includes a lifting rectangular groove (105) and a rectangular baffle (101). The lifting rectangular groove (105) is located at the top of the washing chamber (4), and the rectangular baffle (101) is slidably connected inside the lifting rectangular groove (105). The splash-proof linkage component (10) is used to pull the rectangular baffle (101) upward when the processing table (5) moves downward, thereby increasing the enclosed area of ​​the washing chamber (4).

2. The grinding equipment for manufacturing and processing double eccentric rotary ball valves according to claim 1, characterized in that, The lifting mechanism (7) includes a hydraulic cylinder (71) and a circular bellows (72). The hydraulic cylinder (71) is installed inside the operating table (1), and the output end of the hydraulic cylinder (71) is connected to the bottom end of the processing table (5). The circular bellows (72) is sleeved on the outside of the output end of the hydraulic cylinder (71), and the two ends of the circular bellows (72) are respectively fixed to the bottom end of the inner wall of the washing tank (4) and the bottom end of the processing table (5) to form a dynamic seal.

3. The grinding equipment for manufacturing and processing double eccentric rotary ball valves according to claim 2, characterized in that, The pneumatic disturbance assembly (9) includes a buffer plate (91), a rectangular bellows (92), and a return spring (93). The buffer plate (91) is fixed to the side of the processing table (5). The rectangular bellows (92) is fixed to the bottom end of the buffer plate (91). The side of the rectangular bellows (92) is connected to the air outlet pipe (8). The end of the air outlet pipe (8) away from the rectangular bellows (92) is bent and faces the workpiece area between the automatic clamps (6). The two ends of the return spring (93) are fixed to the top and bottom of the inner wall of the rectangular bellows (92), respectively.

4. The grinding equipment for manufacturing and processing double eccentric rotary ball valves according to claim 3, characterized in that, The splash-proof linkage assembly (10) also includes a side plate (102), a traction rope (103), and a guide wheel (104). The side plate (102) is fixed to the side of the processing table (5). The two ends of the traction rope (103) are fixed to the top of the side plate (102) and the top of the rectangular baffle (101), respectively. The guide wheel (104) is fixed inside the operating table (1). The traction rope (103) passes around the guide wheel (104) to change the direction of force.

5. The grinding equipment for manufacturing and processing double eccentric rotary ball valves according to claim 1, characterized in that, The washing chamber (4) and the rectangular baffle (101) are symmetrically provided with overflow holes (11). The height of the overflow holes (11) is lower than the highest position of the processing table (5) and higher than the lowest position of the processing table (5), in order to maintain a constant liquid level in the washing chamber (4).

6. The grinding equipment for manufacturing and processing double eccentric rotary ball valves according to claim 1, characterized in that, The processing table (5) has multiple sets of leakage holes (51) connected to the table surface, which are used to allow coolant to pass through and collect at the bottom of the washing chamber (4).

7. The grinding equipment for manufacturing and processing double eccentric rotary ball valves according to claim 1, characterized in that, The dual-axis robotic arm (2) is an XY-axis rectangular coordinate machine, and the electric grinder (3) is installed on the output flange of the dual-axis robotic arm (2).

8. The grinding equipment for manufacturing and processing double eccentric rotary ball valves according to claim 1, characterized in that, T-shaped sliders (52) are fixed to both sides of the processing table (5), and T-shaped grooves (53) are symmetrically opened on the inner wall of the washing chamber (4). The T-shaped sliders (52) are slidably connected to the inside of the T-shaped grooves (53) to constrain the movement trajectory of the processing table (5).

9. A grinding equipment for manufacturing and processing a double eccentric rotary ball valve according to claim 4, characterized in that, Both the circular corrugated pipe (72) and the rectangular corrugated pipe (92) are made of corrosion-resistant rubber, and the traction rope (103) is a fire-resistant and high-temperature resistant aramid rope.

10. A method for manufacturing a double eccentric rotary ball valve, applied to a grinding equipment for manufacturing a double eccentric rotary ball valve as described in any one of claims 1-9, characterized in that, The method includes the following steps: S1. Grinding process: Place the workpiece on the processing table (5) and clamp it with the automatic clamp (6). The processing table (5) is in the highest position. The dual-axis robotic arm (2) drives the electric grinder (3) to grind the workpiece. The cooling pipe (12) sprays coolant synchronously. The waste liquid carrying chips flows into the washing chamber (4) through the leakage hole (51). S2. The tool retracts and the workpiece sinks. After grinding is completed, the dual-axis robotic arm (2) retracts the tool, the hydraulic cylinder (71) retracts, and the processing table (5) moves vertically down along the T-shaped slider (52) and T-shaped groove (53). The circular bellows (72) is compressed and sealed, and the entire workpiece sinks into the liquid in the washing chamber (4). S3. Anti-splash and pneumatic turbulence cleaning: When the processing table (5) moves down, the side plate (102) lifts the rectangular baffle (101) to raise the anti-splash through the traction rope (103). At the same time, the buffer plate (91) compresses the rectangular bellows (92) and the return spring (93). The gas is sprayed onto the workpiece through the exhaust pipe (8) to form turbulence. The waste liquid washes the workpiece from all directions, removes the grinding debris and cools it down. S4. Reset: After cleaning, the hydraulic cylinder (71) extends and lifts the processing table (5) back to its original position. The circular bellows (72) extends, and the rectangular baffle (101) falls down by its own weight. The rectangular bellows (92) rebounds and draws air under the action of the reset spring (93), preparing for the next cycle.

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