Ball valve ball machining system based on image detection and using method thereof

Abstract

The invention discloses a ball valve ball body machining system based on image detection and a use method thereof, belongs to the technical field of valve ball machining, and solves the problem that for a ball valve ball body, it is difficult to consider structural strength and a hollow structure of the ball valve ball body at the same time. Comprising the following steps that an inner sleeve, a middle sleeve and an outer sleeve which are sequentially arranged in a sleeving mode from inside to outside are placed into a spherical cavity formed by closing a static mold and a movable mold; high-pressure inflation is conducted on the outer sleeve, and the outer sleeve is expanded to abut against the inner wall of the spherical cavity; and high-pressure inflation is conducted on the middle sleeve, the middle sleeve is expanded to abut against the inner wall of the outer sleeve, and the inflation pressure of the middle sleeve is larger than that of the outer sleeve. The middle sleeve, the inner sleeve and the outer sleeve are formed through pre-cutting and spot welding, then inflation forming is conducted in sequence, it is ensured that all parts are concentric and stable in structure, after the annular piece is added between the middle sleeve and the outer sleeve, molten metal is injected to fill all cavities, an inner and outer sphere structure is formed, in the subsequent cooling process, water leakage products are removed through thermal imaging detection, and the finished product quality is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of valve ball processing, and in particular to a ball valve ball processing system based on image detection and a use method thereof. Background Art

[0002] The valve ball, also known as the spherical valve, is an important industrial valve, known for its unique spherical valve core and valve seat design. This structure enables the valve ball to provide good sealing performance in the fully open or fully closed state, while achieving smooth switching operation. The core components of the valve ball include the valve body, valve core and seals. The valve body is the outer shell of the valve, usually made of solid metal material to withstand the pressure of the internal fluid; the valve core is spherical and controls the flow of the fluid by rotation. Its surface is often covered with wear-resistant and corrosion-resistant materials to extend its service life; the seal ensures that the fluid will not leak when the valve core is closed. The valve ball is easy to operate. You only need to rotate the valve core 90 degrees to achieve full opening or full closing. This design not only reduces the resistance of the fluid, but also improves the control accuracy of the flow. In addition, the maintenance of the valve ball is relatively simple because its compact structure makes it easy to inspect and replace parts. Although valve balls may encounter wear problems in high pressure differentials or media containing solid particles and require regular maintenance, their wide application in multiple industries such as petroleum, chemical, food processing, pharmaceutical manufacturing, and water treatment has proven their advantages of high efficiency, energy saving, and easy operation. With the development of material science and manufacturing technology, the performance and durability of valve balls are also constantly improving to meet a wider range of industrial needs.

[0003] The ball in the ball valve is crucial to it. The ball in the ball valve is the core component of the valve and is usually made of strong and durable materials to adapt to different working conditions and media. The design of the ball enables it to rotate freely in the valve seat to open and close the valve. In the fully open position, the ball is aligned with the direction of fluid flow, thereby minimizing fluid resistance and pressure loss; in the fully closed position, the ball is perpendicular to the direction of fluid flow to ensure good sealing performance. The surface of the ball is usually precision machined to ensure a close fit with the valve seat to prevent leakage. In addition, the rotation of the ball can be achieved manually, electrically or pneumatically, which is easy to operate and maintain. The design and material selection of the ball are crucial to the overall performance of the ball valve, affecting its reliability and durability in various industrial applications.

[0004] At present, according to the requirements of GBT12224-2015 or GB / T12237-2021, the ball valve generally has requirements for its wall thickness, and its structure basically does not have a hollow structure. The so-called hollow ball on the market is actually an operation made by manufacturers to reduce the cost of ball valve balls, and this operation makes the ball valve unable to withstand high-pressure environments and can only withstand a medium-pressure environment of 2.5MPa. However, if it is necessary to use the ball of the ball valve to block the heat of the high-temperature fluid, it is not only necessary to use the inner and outer valve bodies of the jacketed ball valve to block the heat, but also the ball of the ball valve needs to have a hollow structure so that the coolant and the ball of the ball valve can exchange heat and cool down. However, if the existing ball valve ball needs to be a hollow structure, it needs to be grooved, which cannot meet the requirements of its structural strength. Therefore, it is difficult for the ball valve ball to take into account both the structural strength and its hollow structure.

[0005] Therefore, a ball valve ball processing system based on image detection and a use method thereof are proposed to solve or alleviate the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a ball valve ball processing system based on image detection and a use method thereof.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A method for using a ball valve ball processing system based on image detection comprises the following steps: The inner sleeve, the middle sleeve, and the outer sleeve are placed from the inside to the outside into the spherical cavity of the static mold and the dynamic mold; Inflate the jacket with high pressure and expand the jacket until it contacts the inner wall of the spherical cavity; Inflate the middle sleeve with high pressure and expand the middle sleeve until it contacts the inner wall of the outer sleeve, and the inflation pressure of the middle sleeve is greater than the inflation pressure of the outer sleeve; Inflate the inner sleeve with high pressure and expand the inner sleeve until it contacts the inner wall of the middle sleeve; After the annular sheet is set between the middle sleeve and the outer sleeve, the upper mold is closed with the static mold and the dynamic mold, and the molten raw material is injected between the spherical cavity and the outer sleeve, and between the inner sleeve and the middle sleeve and waits for cooling; After cooling, the sphere is obtained and demoulded, and the sphere is dropped into cooling water to cool down and tested for water leakage. If it is leaking, it is recycled, and if it is not leaking, it is sold; The process of obtaining a sphere after cooling and demoulding the sphere, allowing the sphere to fall into cooling water to cool down and detecting water leakage comprises the following steps: The temperature distribution video stream of the sphere on the axis over a period of time after it falls into the cooling water is captured by thermal imaging; Convert each frame image in the temperature distribution video stream into a grayscale image; Through formula one , convert the grayscale image into a temperature distribution map, where the grayscale value of each pixel corresponds to a temperature value, where It's pixels The temperature, is the gray value, It is the mapping function from grayscale to temperature; Through formula 2 Calculate the temperature gradient inside and outside the sphere, represents the rate of change of temperature along the x direction, represents the rate of change of temperature along the y direction; The abnormal temperature change area in the temperature distribution diagram is identified by formula 3, which includes ,in is a binary image, is the gradient threshold; Determine whether there is a water leak by analyzing the changes in each frame of the temperature distribution video stream.

[0008] The present invention also provides a ball valve ball processing system based on image detection, which is used to implement the method of using the ball valve ball processing system based on image detection as described above, including a long water trough with an open top, a workbench fixedly connected to the top surface of the long water trough and with a length less than the length of the long water trough, a feeding tube fixedly connected to the workbench, a feeding assembly fixedly connected to the workbench and connected to the feeding tube, a static mold connected to the feeding tube, an upper mold located above the static mold and capable of vertical displacement, and a dynamic mold capable of horizontal displacement along the length direction of the workbench relative to the static mold, a drop trough located below the dynamic mold and the static mold and connected to the long water trough is provided on the top surface of the workbench, the long water trough is connected to circulating cooling water, a thermal imaging unit is provided on one side of one end of the long water trough away from the workbench, the thermal imaging unit is used to continuously take thermal images, the thermal imaging unit is coupled to an information processing unit, the information processing unit is used to judge the water leakage of the ball according to the thermal image.

[0009] Preferably, the feeding assembly includes a cover shell fixedly connected to the workbench, a servo motor fixedly connected in the cover shell, a guide screw coaxially connected to the output shaft of the servo motor, and a feeding hopper connected to the feeding barrel, and the guide screw is rotatably arranged in the feeding barrel.

[0010] Preferably, the top surface of the feeding barrel is fixedly connected to a mounting seat, the top surface of the mounting seat is fixedly connected to a wide rail consistent with the width direction of the long water trough, the wide rail is provided with a horizontal slide that can slide along its length direction, the horizontal slide is fixedly connected to a longitudinal rail consistent with the length direction of the long water trough, the longitudinal rail is provided with a vertical slide that can slide along its length direction, the vertical slide is fixedly connected to a vertically arranged vertical hydraulic cylinder, and the movable end of the vertical hydraulic cylinder is fixedly connected to the upper mold through a connecting seat.

[0011] Preferably, a protective cover is fixedly connected to one end of the workbench away from the cover shell, the protective cover is open toward one side of the cover shell, and a horizontal hydraulic cylinder is fixedly connected to the side of the protective cover away from the cover shell, and the movable end of the horizontal hydraulic cylinder passes through the protective cover and is fixedly connected to the movable mold.

[0012] Preferably, a spherical cavity that can be combined is provided in the movable mold and the static mold, the top surface of the spherical cavity is opened, the bottom surface of the upper mold is recessed upward to form a primary step groove, the top surface of the primary step groove is recessed upward to form a secondary step groove, a through groove is provided in the top surface of the secondary step groove, and the top surface of the upper mold is provided with a plurality of primary through holes connected to the primary step groove and a plurality of secondary through holes connected to the secondary step groove, the primary through holes are used for exhaust, and the secondary through holes are used for exhaust and feeding.

[0013] Preferably, the top surface of the upper mold is fixedly connected with a plurality of air outlet vertical pipes connected to the primary through hole, and a plurality of feed vertical pipes connected to the secondary through hole, the plurality of air outlet vertical pipes are commonly connected to an annular air outlet ring pipe, the plurality of feed vertical pipes are commonly connected to an annular feed ring pipe, the air outlet ring pipe is connected to the first air outlet pipe and the second air outlet pipe, and the feed ring pipe is connected to a feed main pipe and an exhaust main pipe.

[0014] The present invention has the following beneficial effects: The ball valve ball processing system based on image detection and its use method of the present invention prepares the middle sleeve, inner sleeve and outer sleeve by pre-cutting and spot welding, and welds the edges to ensure that the three sleeves are fixed, puts these parts into the spherical cavity of the mold, and uses the FiDU metal inflation process to inflate and shape them in sequence, ensuring that the outer sleeve, middle sleeve and inner sleeve are respectively in contact with the corresponding inner wall to form a spherical structure and are set with the center of the ball. When the middle sleeve is inflated, a higher atmospheric pressure needs to be provided to overcome the leakage of the support tube and ensure the molding quality; After adding the annular sheet between the middle sleeve and the outer sleeve, the mold is closed and the molten metal raw material is introduced until the spherical cavity is filled. After solidification, the outer spherical structure is firm due to the cooperation between the outer limit column and the metal raw material, and has high strength and flatness. At the same time, molten metal is also injected between the inner sleeve and the middle sleeve, and is bonded to the inner wall of the outer sleeve through the support tube to form an inner sphere and connect it with the outer sphere to ensure integrity; During the cooling process of the ball, the temperature distribution is monitored by thermal imaging and information processing units, water leakage is detected by image recognition algorithms, and defective products are screened. The resulting hollow ball valve has high structural strength, meets the internal hollow requirements, and is suitable for subsequent coolant introduction. This method improves the production efficiency and quality of ball valves and is suitable for heat exchange of high-temperature fluids and high-pressure environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a structural schematic diagram of a ball valve ball processing system based on image detection in the present invention; Figure 2 for Figure 1 The enlarged view of point A in the middle; Figure 3 for Figure 2 The enlarged view of point B in the middle; Figure 4 It is an exploded view of the movable mold, the static mold and the upper mold in the present invention; Figure 5 for Figure 4 Enlarged view of point C in the middle; Figure 6 It is a schematic diagram of the structure of the outer sleeve, the middle sleeve and the inner sleeve in the present invention; Figure 7 It is a cross-sectional view of the outer sleeve, the middle sleeve and the inner sleeve of the present invention; Figure 8 for Figure 7 The enlarged view of point D in the middle; Fig. 9 The present invention is a structural block diagram of the method for using the ball valve ball processing system based on image detection.

[0017] 1. Long water tank; 2. Workbench; 3. Drop trough; 4. Cover; 5. Feed hopper; 6. Feeding barrel; 7. Static mold; 8. Moving mold; 9. Protective cover; 10. Horizontal hydraulic cylinder; 11. Upper mold; 12. Mounting seat; 13. Wide rail; 14. Horizontal slide seat; 15. Longitudinal rail; 16. Vertical slide seat; 17. Vertical hydraulic cylinder; 18. Connecting seat; 19. Air outlet vertical pipe; 20. Air outlet ring pipe; 21. First air outlet pipe ; 22. Second air outlet pipe; 23. Feed vertical pipe; 24. Feed ring pipe; 25. Feed main pipe; 26. Exhaust main pipe; 27. Spherical cavity; 28. Primary step groove; 29. ​​Secondary step groove; 30. Through groove; 31. Primary through hole; 32. Secondary through hole; 33. Outer sleeve; 34. External limit column; 35. Outer tube; 36. Middle sleeve; 37. Support tube; 38. Middle tube; 39. Inner sleeve; 40. Internal limit column. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0021] In the description of the present invention, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] Furthermore, the terms “first”, “second”, “third”, etc. are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] A method for using a ball valve ball processing system based on image detection, such as Fig. 9 As shown, the following steps are included: The inner sleeve 39, the middle sleeve 36, and the outer sleeve 33 are placed from the inside to the outside into the spherical cavity 27 of the static mold 7 and the dynamic mold 8; Inflate the jacket 33 with high pressure and expand the jacket 33 until it contacts the inner wall of the spherical cavity 27; Inflate the middle sleeve 36 with high pressure and expand the middle sleeve 36 until it contacts the inner wall of the outer sleeve 33, and the inflation pressure of the middle sleeve 36 is greater than the inflation pressure of the outer sleeve 33; Inflate the inner sleeve 39 with high pressure and expand the inner sleeve 39 until it contacts the inner wall of the middle sleeve 36; After the annular sheet is sleeved between the middle sleeve 36 and the outer sleeve 33, the upper mold 11 is molded with the static mold 7 and the dynamic mold 8, and the molten raw material is injected between the spherical cavity 27 and the outer sleeve 33, and between the inner sleeve 39 and the middle sleeve 36 and waited for cooling; After cooling, the sphere is obtained and demoulded, and the sphere is dropped into cooling water to cool down and detect its leakage. If it is leaking, it is recycled, and if it is not leaking, it is sold.

[0025] It should be noted that if Figure 6 , Figure 7 and Figure 8 As shown, before the inner sleeve 39, the middle sleeve 36, and the outer sleeve 33, which are arranged from the inside to the outside, are placed in the spherical cavity 27 of the static mold 7 and the dynamic mold 8, it is necessary to obtain the middle piece, the inner piece, and the outer piece by stamping or cutting, and fix a number of outer limit columns 34 on the surface of the outer piece by a spot welding process, punch holes on the surface of the middle piece and spot weld a support tube 37 connected to the holes, spot weld a number of inner limit columns 40 on the inner piece, and then fold the edges of the middle piece, the inner piece, and the outer piece inward by folding, and then fit the folded positions of the two inner pieces, and complete the connection by surfacing welding to form the inner sleeve 39 and the inner tube, and then put the two middle pieces on the outside of the inner sleeve 39, and similarly obtain the middle sleeve 36 and the middle tube 38 by surfacing welding, and the same is true for the outer sleeve 33 and the outer tube 35.

[0026] The production of the ball valve ball is completed by the above method, so that the ball can be formed into two parts, an inner sphere and an outer sphere, respectively, and the two parts can be firmly connected together, so that the whole sphere has a higher structural strength and is not easily damaged by high pressure. At the same time, the structure is not formed by grooving, but is an integrated structure, which makes the whole sphere more reliable and able to withstand high temperature and high pressure environments.

[0027] In the above method, the inner sleeve 39, the middle sleeve 36, and the outer sleeve 33 can be made of, for example, AISI310 stainless steel, and the molten metal raw material can be made of, for example, aluminum bronze C17200. Since the maximum continuous use temperature of AISI310 stainless steel is usually 1100°C, and the molten temperature of aluminum bronze C17200 is maintained between 910-960°C, when the molten aluminum bronze C17200 is placed in the AISI310 stainless steel, the inner sleeve 39, the middle sleeve 36, and the outer sleeve 33 can still maintain their original shapes, and after the aluminum bronze C17200 is cooled and solidified, it is demolded into water for rapid cooling.

[0028] After cooling, the sphere is obtained and demoulded, and the sphere is dropped into cooling water to cool down and detect its water leakage, including the following steps: The temperature distribution video stream of the sphere on the axis over a period of time after it falls into the cooling water is captured by thermal imaging; Convert each frame image in the temperature distribution video stream into a grayscale image; Through formula one , convert the grayscale image into a temperature distribution map, where the grayscale value of each pixel corresponds to a temperature value, where It's pixels The temperature, is the gray value, It is the mapping function from grayscale to temperature; Through formula 2 Calculate the temperature gradient inside and outside the sphere, represents the rate of change of temperature along the x direction, represents the rate of change of temperature along the y direction; The abnormal temperature change area in the temperature distribution diagram is identified by formula 3, which includes ,in is a binary image, is the gradient threshold; Determine whether there is a water leak by analyzing the changes in each frame of the temperature distribution video stream.

[0029] Through the above method steps, after the sphere is formed and demolded, a quality inspection can be carried out to prevent the sphere from leaking when entering the next process or being a final product. In addition, since the sphere still has a certain amount of heat after demolding, the method can not only take cooling into account, but also form a thermal image of the residual heat after demolding and the temperature difference between the cooling water, so that leakage can be easily discovered.

[0030] The present invention also provides a ball valve ball processing system based on image detection, which is used to implement the use method of the ball valve ball processing system based on image detection, such as Figure 1 As shown, it includes a long water trough 1 with an open top, a workbench 2 fixedly connected to the top surface of the long water trough 1 and having a length less than the length of the long water trough 1, a feeding tube 6 fixedly connected to the workbench 2, a feeding assembly fixedly connected to the workbench 2 and connected to the feeding tube 6, a static mold 7 connected to the feeding tube 6, an upper mold 11 located above the static mold 7 and capable of vertical displacement, and a dynamic mold 8 horizontally displaceable along the length direction of the workbench 2 relative to the static mold 7, a drop trough 3 located below the dynamic mold 8 and the static mold 7 and connected to the long water trough 1 is provided on the top surface of the workbench 2, the long water trough 1 is connected to circulating cooling water, a thermal imaging unit is provided on one side of one end of the long water trough 1 away from the workbench 2, the thermal imaging unit is used to continuously capture thermal images, the thermal imaging unit is coupled to an information processing unit, the information processing unit is used to determine the water leakage of the sphere according to the thermal image, the thermal imaging unit is a thermal imager, and the information processing unit is a processor.

[0031] By providing the complete ball valve ball processing system based on image detection, when people need to produce the ball valve ball, they can complete the entire ball production steps through the system, and the ball that finally leaves the system can even get quality feedback on whether it is leaking.

[0032] Preferably, if Figure 1 As shown, the feeding assembly includes a cover shell 4 fixedly connected to the workbench 2, a servo motor fixedly connected inside the cover shell 4, a material guide screw coaxially connected to the output shaft of the servo motor, and a hopper 5 connected to the feeding barrel 6, and the material guide screw is rotatably arranged inside the feeding barrel 6.

[0033] When the feeding assembly needs to transport molten metal raw materials, the molten metal raw materials are fed into the hopper 5, and then the servo motor is used to drive the guide screw to rotate. Driven by the guide screw, the molten metal raw materials will be transported toward the feeding barrel 6 and the static mold 7.

[0034] Preferably, if Figure 1 and Figure 2As shown, a mounting seat 12 is fixedly connected to the top surface of the feeding barrel 6, a wide rail 13 which is consistent with the width direction of the long water trough 1 is fixedly connected to the top surface of the mounting seat 12, a horizontal slide 14 which can slide along its length direction is arranged on the wide rail 13, a longitudinal rail 15 which is consistent with the length direction of the long water trough 1 is fixedly connected to the horizontal slide 14, a vertical slide 16 which can slide along its length direction is arranged on the longitudinal rail 15, a vertical hydraulic cylinder 17 which is vertically arranged is fixedly connected to the vertical slide 16, a movable end of the vertical hydraulic cylinder 17 is fixedly connected to the upper mold 11 through a connecting seat 18, and both the wide rail 13 and the longitudinal rail 15 are electric slide rails.

[0035] Through the arrangement of the above structure, when the upper mold 11 needs to be molded with the static mold 7 and the dynamic mold 8, the upper mold 11 can be molded only by the wide rail 13, the longitudinal rail 15, and the vertical hydraulic cylinder 17. The above action can be performed in reverse to complete the demolding of the upper mold 11.

[0036] Preferably, if Figure 1 As shown, a protective cover 9 is fixedly connected to one end of the workbench 2 away from the cover shell 4, the protective cover 9 is open toward the side of the cover shell 4, and a horizontal hydraulic cylinder 10 is fixedly connected to the side of the protective cover 9 away from the cover shell 4, and the movable end of the horizontal hydraulic cylinder 10 passes through the protective cover 9 and is fixedly connected to the movable mold 8.

[0037] The protective cover 9 is mainly used to bear the role of the horizontal hydraulic cylinder 10, so that the horizontal hydraulic cylinder 10 can drive the movable mold 8 to move in a horizontal position, thereby completing the mold closing or demolding action with the static mold 7.

[0038] Preferably, if Figure 4 and Figure 5 As shown, a spherical cavity 27 that can be combined is provided in the movable mold 8 and the static mold 7, and the top surface of the spherical cavity 27 is opened. The bottom surface of the upper mold 11 is recessed upward to form a primary step groove 28, and the top surface inside the primary step groove 28 is recessed upward to form a secondary step groove 29. A through groove 30 is provided in the top surface inside the secondary step groove 29. The top surface of the upper mold 11 is provided with a plurality of primary through holes 31 connected to the primary step groove 28, and a plurality of secondary through holes 32 connected to the secondary step groove 29. The primary through holes 31 are used for exhaust, and the secondary through holes 32 are used for exhaust and feeding.

[0039] like Figure 2 and Figure 3As shown, the top surface of the upper mold 11 is fixedly connected with a plurality of air outlet vertical pipes 19 connected with the primary through hole 31 and a plurality of feed vertical pipes 23 connected with the secondary through hole 32. The plurality of air outlet vertical pipes 19 are commonly connected with an annular air outlet ring pipe 20, and the plurality of feed vertical pipes 23 are commonly connected with an annular feed ring pipe 24. The air outlet ring pipe 20 is connected with the first air outlet pipe 21 and the second air outlet pipe 22, and the feed ring pipe 24 is connected with the feed main pipe 25 and the exhaust main pipe 26. The air outlet vertical pipe 19, the feed vertical pipe 23, the first air outlet pipe 21 and the second air outlet pipe 22 are all connected with metal bellows.

[0040] The design of the air outlet vertical pipe 19 and the feed vertical pipe 23 of the upper mold 11 makes the exhaust and feeding of the sphere during the molding process more efficient, improves the production efficiency and the quality of the sphere, and the rapid exhaust and feeding of the sphere during the molding process is achieved through the annular design of the air outlet vertical pipe 19 and the feed vertical pipe 23.

[0041] When the present invention is actually applied, according to the method of using the ball valve ball processing system based on image detection, the middle sleeve 36, the inner sleeve 39, and the outer sleeve 33 are prepared in advance by cutting and spot welding, and the edges of the middle sleeve 36, the inner sleeve 39 and the outer sleeve 33 are welded by surfacing welding respectively, so that the three can maintain the sleeve relationship and cannot be separated, and then the sleeved middle sleeve 36, the inner sleeve 39, and the outer sleeve 33 are put into the spherical cavity 27 molded together by the dynamic mold 8 and the static mold 7, and the outer sleeve 33 is inflated in turn by the FiDU metal inflation process until the outer limit column 34 on the surface of the outer sleeve 33 can contact the inner wall of the spherical cavity 27. Then, the middle sleeve 36 is inflated by the same process. Since the middle sleeve 36 is connected to a number of support tubes 37, the support tubes 37 may leak. Therefore, a greater air pressure is required to complete the inflation of the middle tube 38 until the support tube 37 can contact the inner wall of the outer sleeve 33. Finally, the inner sleeve 39 is inflated by the FiDU metal inflation process so that the inner sleeve 39 can swell up and ensure that the inner limit column 40 can contact the inner wall of the middle sleeve 36. The inner limit column 40 and the support tube 37 are staggered. At this time, the inner sleeve 39, the middle sleeve 36, and the outer sleeve 33 all maintain a spherical structure and are all kept in a state of being set with the same sphere center. After the annular sheet is sleeved between the middle tube 38 of the middle sleeve 36 and the outer tube 35 of the outer sleeve 33, the upper mold 11 is moved downward to complete the mold closing, so that the inner tube of the inner sleeve 39 can leave through the through groove 30 of the upper mold 11; At this time, the molten metal raw material is introduced through the feeding assembly. Under the transportation of the feeding assembly, the molten metal raw material enters the spherical cavity 27 between the static mold 7 and the dynamic mold 8 through the feeding tube 6, and until it is filled. At this time, after the metal raw material between the outer sleeve 33 and the inner wall of the spherical cavity 27 solidifies, it can be matched with the metal raw material between the outer sleeve 33 and the inner wall of the spherical cavity 27 through the outer limit column 34 to form a structure similar to reinforced concrete, so that the outer sphere formed between the outer sleeve 33 and the inner wall of the spherical cavity 27 has a firm structure and high strength, and the outer sphere is formed by the spherical cavity 27, so it can also have good flatness, and then it is fed through the feeding assembly. The molten metal raw material is fed into the space between the inner sleeve 39 and the middle sleeve 36 in the order of the tube 25, the feeding ring tube 24, and the feeding vertical tube 23, and part of the molten metal raw material can be bonded to the inner wall of the outer sleeve 33 through the support tube 37, so that after the molten metal raw material solidifies, not only can a relatively strong inner sphere be formed, but also the inner sphere and the outer sphere can be connected through the penetrating support tube 37, so that the inner sphere and the outer sphere have good integrity, and finally the sphere after cooling and solidification can be demoulded and fall from the drop trough 3 into the long water trough 1. Since the cooling water in the long water trough 1 is circulated, the cooling water can always maintain a relatively stable temperature; While the sphere is cooling down in the long water tank 1, the thermal imaging unit and the information processing unit can be used to take thermal images over a period of time and combine them with the image recognition algorithm to determine whether there is any water leakage in the sphere, screen out and repair defective products, and send the finished products directly to the next process. In this way, a hollow ball valve sphere can be obtained, and the ball valve sphere has a high structural strength, and it can also meet the purpose of being hollow inside so that the subsequent coolant can be passed into it.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for using a ball valve ball processing system based on image detection, characterized in that: The following steps are included: The inner sleeve (39), the middle sleeve (36), and the outer sleeve (33) are placed from the inside to the outside in the spherical cavity (27) of the static mold (7) and the dynamic mold (8); Inflate the outer jacket (33) with high pressure and expand the outer jacket (33) until it contacts the inner wall of the spherical cavity (27); Inflate the middle sleeve (36) with high pressure and expand the middle sleeve (36) until it contacts the inner wall of the outer sleeve (33), and the inflation pressure of the middle sleeve (36) is greater than the inflation pressure of the outer sleeve (33); Inflate the inner sleeve (39) with high pressure and expand the inner sleeve (39) until it contacts the inner wall of the middle sleeve (36); After the annular sheet is sleeved between the middle sleeve (36) and the outer sleeve (33), the upper mold (11) is molded together with the static mold (7) and the movable mold (8), and molten raw materials are injected between the spherical cavity (27) and the outer sleeve (33) and between the inner sleeve (39) and the middle sleeve (36) and then left to cool; After cooling, the sphere is obtained and demoulded, and the sphere is dropped into cooling water to cool down and tested for water leakage. If it is leaking, it is recycled, and if it is not leaking, it is sold; The process of obtaining a sphere after cooling and demoulding the sphere, allowing the sphere to fall into cooling water to cool down and detecting water leakage comprises the following steps: The temperature distribution video stream of the sphere on the axis over a period of time after it falls into the cooling water is captured by thermal imaging; Convert each frame image in the temperature distribution video stream into a grayscale image; Through formula one , convert the grayscale image into a temperature distribution map, where the grayscale value of each pixel corresponds to a temperature value, where It's pixels The temperature, is the gray value, It is the mapping function from grayscale to temperature; Through formula 2 Calculate the temperature gradient inside and outside the sphere, represents the rate of change of temperature along the x direction, represents the rate of change of temperature along the y direction; The abnormal temperature change area in the temperature distribution diagram is identified by formula 3, which includes ,in is a binary image, is the gradient threshold; Determine whether there is a water leak by analyzing the changes in each frame of the temperature distribution video stream.

2. A ball valve ball processing system based on image detection, used to implement the method of using the ball valve ball processing system based on image detection as claimed in claim 1, characterized in that: The invention comprises a long water trough (1) with an open top surface, a workbench (2) fixedly connected to the top surface of the long water trough (1) and having a length less than the length of the long water trough (1), a feeding tube (6) fixedly connected to the workbench (2), a feeding assembly fixedly connected to the workbench (2) and connected to the feeding tube (6), a static mold (7) connected to the feeding tube (6), an upper mold (11) located above the static mold (7) and capable of vertical displacement, and a movable mold (8) capable of horizontal displacement along the length direction of the workbench (2) relative to the static mold (7), wherein a drop groove (3) located below the movable mold (8) and the static mold (7) and connected to the long water trough (1) is provided on the top surface of the workbench (2), wherein the long water trough (1) is connected to circulating cooling water, and a thermal imaging unit is arranged on one side of one end of the long water trough (1) away from the workbench (2), wherein the thermal imaging unit is used to continuously capture thermal images, and the thermal imaging unit is coupled to an information processing unit, wherein the information processing unit is used to judge the water leakage of the sphere according to the thermal images.

3. The ball valve ball processing system based on image detection according to claim 2 is characterized in that: The feeding assembly comprises a cover (4) fixedly connected to the workbench (2), a servo motor fixedly connected inside the cover (4), a material guide screw coaxially connected to an output shaft of the servo motor, and a feed hopper (5) connected to a feeding barrel (6), wherein the material guide screw is rotatably arranged inside the feeding barrel (6).

4. The ball valve ball processing system based on image detection according to claim 2 is characterized in that: The top surface of the feeding cylinder (6) is fixedly connected to a mounting seat (12); the top surface of the mounting seat (12) is fixedly connected to a wide rail (13) in the same width direction as the long water trough (1); the wide rail (13) is provided with a horizontal slide seat (14) which can slide along its length direction; the horizontal slide seat (14) is fixedly connected to a longitudinal rail (15) in the same length direction as the long water trough (1); the longitudinal rail (15) is provided with a vertical slide seat (16) which can slide along its length direction; the vertical slide seat (16) is fixedly connected to a vertically arranged vertical hydraulic cylinder (17); the movable end of the vertical hydraulic cylinder (17) is fixedly connected to the upper mold (11) via a connecting seat (18).

5. The ball valve ball processing system based on image detection according to claim 3 is characterized in that: A protective cover (9) is fixedly connected to one end of the workbench (2) away from the cover shell (4); the protective cover (9) is open toward one side of the cover shell (4); and a horizontal hydraulic cylinder (10) is fixedly connected to the side of the protective cover (9) away from the cover shell (4); the movable end of the horizontal hydraulic cylinder (10) passes through the protective cover (9) and is fixedly connected to the movable mold (8).

6. The ball valve ball processing system based on image detection according to claim 3 is characterized in that: The movable mold (8) and the static mold (7) are provided with a spherical cavity (27) that can be combined. The top surface of the spherical cavity (27) is open. The bottom surface of the upper mold (11) is recessed upward to form a primary stepped groove (28). The top surface of the primary stepped groove (28) is recessed upward to form a secondary stepped groove (29). A through groove (30) is provided on the top surface of the secondary stepped groove (29). The top surface of the upper mold (11) is provided with a plurality of primary through holes (31) connected to the primary stepped groove (28), and a plurality of secondary through holes (32) connected to the secondary stepped groove (29). The primary through holes (31) are used for exhaust, and the secondary through holes (32) are used for exhaust and feeding.

7. The ball valve ball processing system based on image detection according to claim 6 is characterized in that: The top surface of the upper mold (11) is fixedly connected with a plurality of air outlet vertical pipes (19) connected to the primary through hole (31) and a plurality of feed vertical pipes (23) connected to the secondary through hole (32); the plurality of air outlet vertical pipes (19) are connected to a ring-shaped air outlet ring pipe (20); the plurality of feed vertical pipes (23) are connected to a ring-shaped feed ring pipe (24); the air outlet ring pipe (20) is connected to a first air outlet pipe (21) and a second air outlet pipe (22); the feed ring pipe (24) is connected to a feed main pipe (25) and an exhaust main pipe (26).

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