A valve body abrasive flow polishing apparatus

Abstract

The application discloses a valve body abrasive grain flow polishing device, and relates to the technical field of valve body machining.The valve body abrasive grain flow polishing device comprises a base, an upper piston and a lower piston, further comprises a clamping mechanism for limiting and clamping the valve body, a center positioning mechanism for detecting and judging the center points of different valve body ports after clamping, and a connecting mechanism for aligning the upper piston, the lower piston and the center position of the valve body.The upper portion of the base is provided with a driving assembly, the driving assembly comprises a driving connecting rod, a driving motor is arranged on the driving connecting rod, a limiting assembly is arranged on the driving connecting rod, the limiting assembly comprises a limiting ring and an elastic limiting block, the elastic limiting block is located in the limiting ring, and movable racks are arranged on the upper and lower ends of the driving connecting rod.The valve body abrasive grain flow polishing device can realize abrasive grain flow polishing on valve bodies with complex structures, has good polishing quality, high efficiency and low cost, is easy to operate and maintain, and is easy to popularize and apply.

Description

Technical Field

[0001] This invention relates to the field of valve body processing technology, and in particular to an abrasive flow polishing device for valve bodies. Background Technology

[0002] As valve bodies are used in industrial applications, they come in various specifications, shapes, and sizes. Traditional manual polishing is not only inefficient and costly, but also rarely achieves satisfactory quality for customers. In fact, in industries such as petroleum and chemical processing, the roughness of the valve body directly affects the flowability of petroleum and chemical raw materials, thus directly impacting the continuity of subsequent processes. Therefore, more and more customers are demanding higher quality valve bodies. However, due to the complexity of the valve body's internal structure, ordinary polishing equipment cannot penetrate deep enough to perform fine polishing. To address this issue, abrasive flow polishing has emerged.

[0003] However, existing abrasive flow polishing devices are quite complex to use, and before polishing, the valve body and polishing device need to be manually aligned, resulting in low polishing efficiency. In addition, since the types and sizes of valve bodies are different, the valve orifice size will also vary. However, existing polishing devices cannot adapt to different valve orifice sizes and valve opening positions. A single polishing device can be used to perform abrasive flow polishing on various valve bodies. Summary of the Invention

[0004] The present invention addresses the problem of overly simplistic solutions in existing technologies by providing a solution that differs significantly from existing technologies. The present invention provides a valve body abrasive flow polishing equipment to solve the problems of low polishing efficiency and poor adaptability of existing valve body abrasive flow polishing devices.

[0005] The present invention adopts the following technical solution: an abrasive flow polishing device for valve bodies, comprising a base, an upper piston, and a lower piston, further comprising a clamping mechanism for limiting and clamping the valve body, a center positioning mechanism for detecting and judging the center points of different valve body openings after clamping, and a connecting mechanism for aligning the upper and lower pistons with the center position of the valve body. A driving assembly is provided above the base, the driving assembly comprising a driving connecting rod, a driving motor being provided on the driving connecting rod, and a limiting assembly being provided on the driving connecting rod, the limiting assembly comprising a limiting ring and an elastic limiting block, the elastic limiting block being located in the limiting ring, and movable frames being provided at the upper and lower ends of the driving connecting rod, the upper and lower movable frames being respectively connected to the corresponding upper and lower pistons.

[0006] Furthermore, the connecting mechanism includes a connecting sleeve, with the ends of the upper and lower pistons connected to one end of the connecting sleeve. Each connecting sleeve has an insertion slot at its other end, and a detachable replacement interface is connected to the other end of the connecting sleeve. An insertion block is provided on the detachable replacement interface, and the insertion block corresponds to the insertion slot. A mating groove is provided on one side of the detachable replacement interface. Several guide rods are provided in the detachable replacement interface, with positioning rings connected to the ends of the guide rods. A movable ring is provided at the end of the connecting sleeve, and the movable ring is connected to the corresponding upper and lower valve bodies respectively. An installation ring is provided outside the movable ring, and a limit groove is provided beside the placement frame.

[0007] Furthermore, the detachable replacement interface is cylindrical or flared, the opening size of the detachable replacement interface matches the opening size of the connecting sleeve, and the through groove is adapted to the size of the movable end of the snap-fit ​​telescopic block.

[0008] Furthermore, the mounting ring has a hollow through-hole structure, and the inner diameter of the through-hole of the mounting ring is larger than the outer diameter of the connecting sleeve.

[0009] Furthermore, the clamping mechanism includes a rotating ring, which is mounted on a drive connecting rod on one side. A placement frame is mounted on the outer side of the rotating ring. A clamping block is mounted in the placement frame. A clamping air rod is mounted between the clamping block and the placement frame. Telescopic displacement frames are movably connected to the upper two sides of the placement frame. A locking telescopic block is mounted on the telescopic displacement block on one side.

[0010] Furthermore, there are four sets of telescopic displacement frames, which are symmetrically distributed on the placement frame, and the engaging telescopic blocks are symmetrically distributed on the telescopic displacement frames. A central positioning mechanism is connected to the telescopic displacement block on the other side.

[0011] Furthermore, the central positioning mechanism includes a detection clamping soft block. Each of the telescopic displacement frames is equipped with multiple control rods, and the ends of the multiple control rods are equipped with detection clamping soft blocks. One of the detection clamping soft blocks is provided with a central positioning rod. The central positioning rod is movably connected to a connecting column. The end of the electrically controlled telescopic column is provided with a positioning head. A second central detection rod is provided on the inner surface of the detection clamping soft block. A telescopic limiting rod is provided between the second central detection rod and the electrically controlled telescopic column. A telescopic pneumatic rod is provided on the side of the second central detection rod.

[0012] Furthermore, the telescopic limiting rod is located on the vertical bisector of the second central detection rod, and the second central detection rod is located on the upper inner side of the detection clamping soft block. The telescopic limiting rod is movably connected to the electrically controlled telescopic column.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] Firstly, by changing the structural state of the abrasive flow equipment, two symmetrically arranged pistons are used to move relative to each other to perform abrasive polishing, which greatly simplifies the complex equipment compared to the past and significantly improves the working efficiency.

[0015] Secondly, during use, the clamping mechanism and the center positioning mechanism work together. First, the clamping mechanism initially clamps the valve body. Then, the center positioning mechanism determines the center position of the valve body opening after clamping. Since the inner diameter of the valve body opening is known when processing different valve bodies, the length of the telescopic limiting rod can be manually controlled to match the radius of the valve body opening's inner diameter. Then, the detection clamping soft block clamps the valve body opening. Because it is made of a soft material, the detection clamping soft block can be made of different curvatures to adapt to valve bodies with different opening sizes. However, the center detection rod is located at the center of the detection clamping soft block. (That is, the position of the perpendicular segment), and then using the perpendicular bisector of the two points of the second arc formed by the second center detection rod and the telescopic limiting rod, and the intersection of the two perpendicular segments of the electrically controlled telescopic column, the center of the circle is obtained. The second detection rod can also change with the change of the arc, and always the two ends are in contact with the inner wall of the arc, so that different arcs can be detected. Although when the piston position and the center of the valve body opening are not in the same position when the positioning head and the guide rod are used together, the positioning head can make the piston position shift, so that the piston and the valve body are aligned at the center, so that the valve body with different arcs and different opening positions can be processed. The valve body center can be automatically aligned using a simple principle.

[0016] Thirdly, during use, since the detachable replacement interface and the connecting sleeve are spliced, in order to ensure that valve bodies with different opening sizes can be processed, the appropriate detachable replacement interface can be selected according to the valve body opening size, so that when the detachable replacement interface contacts the valve body opening, the size will not deviate, ensuring that it can be processed normally.

[0017] In summary, during the clamping process, this device can automatically find the center of valve bodies of different sizes and openings without human intervention, has low requirements for valve body clamping, and can automatically adjust the piston position according to the valve port position to make the piston position coincide with the center position of the valve body opening, thereby ensuring machining accuracy. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0020] Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A in the middle;

[0021] Figure 3 This is a front view structural diagram of the present invention;

[0022] Figure 4 This is a schematic diagram of the connection structure between the movable ring and the mounting ring of the present invention;

[0023] Figure 5 This is a first-view structural schematic diagram of the clamping mechanism of the present invention;

[0024] Figure 6 This is a schematic diagram of the clamping mechanism of the present invention from a second perspective.

[0025] Figure 7 This is a schematic diagram of the central positioning mechanism of the present invention.

[0026] Figure label:

[0027] 1. Base; 11. Drive connecting rod; 12. Limiting component; 13. Driveing ​​component; 14. Upper piston; 15. Lower piston; 2. Connecting mechanism; 21. Removable and replaceable interface; 22. Positioning ring; 23. Guide rod; 24. Connecting sleeve; 25. Insertion block; 26. Mounting ring; 27. Movable ring; 3. Center positioning mechanism; 31. Center positioning rod; 32. Connecting column; 33. Telescopic limiting rod; 34. Detection clamping soft block; 35. Second center detection rod; 36. Telescopic air rod; 37. Positioning head; 4. Clamping mechanism; 41. Rotating ring; 42. Telescopic displacement frame; 43. Engaging telescopic block; 44. Limiting groove; 45. Clamping air rod; 46. Clamping block; 47. Placement rack. Detailed Implementation

[0028] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0030] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] The following is combined with Figures 1 to 7 As shown, this embodiment of the invention provides a valve body abrasive flow polishing equipment, including a base 1, an upper piston 14 and a lower piston 15, a clamping mechanism 4 for limiting and clamping the valve body, a center positioning mechanism 3 for detecting and judging the center points of different valve body openings after clamping, and a connecting mechanism 2 for aligning the upper piston 14 and lower piston 15 with the center position of the valve body. A drive assembly 13 is provided above the base 1. The drive assembly 13 includes a drive connecting rod 11, a drive motor is provided on the drive connecting rod 11, and a limit assembly 12 is provided on the drive connecting rod 11. The limit assembly 12 includes a limit ring and an elastic limit block. The elastic limit block is located in the limit ring. Movable frames are provided at the upper and lower ends of the drive connecting rod 11, and the upper and lower movable frames are respectively connected to the corresponding upper piston 14 and lower piston 15.

[0034] During operation, this device can automatically center valve bodies of different sizes and openings during clamping without human intervention. It has low requirements for valve body clamping and can automatically adjust the piston position according to the valve port position to make the piston position coincide with the center position of the valve body opening, thereby ensuring machining accuracy.

[0035] Specifically, the connecting mechanism 2 includes a connecting sleeve 24. The ends of the upper piston 14 and the lower piston 15 are both connected to one end of the connecting sleeve 24. Each connecting sleeve 24 has an insertion groove at the other end. The other end of the connecting sleeve 24 is connected to a detachable replacement interface 21. An insertion block is provided on the detachable replacement interface 21, and the insertion block corresponds to the insertion groove. A docking groove is provided on one side of the detachable replacement interface 21. Several guide rods 23 are provided in the detachable replacement interface 21. The end of the guide rod 23 is connected to a positioning ring 22. The end of the connecting sleeve 24 is provided with a movable ring 27. The movable ring 27 is connected to the corresponding upper valve body and lower valve body respectively. An installation ring 26 is provided outside the movable ring 27. The installation ring 26 is slidably connected to the positioning ring 22. The gap between two adjacent guide rods 23 is smaller than the outer diameter of the positioning head 37.

[0036] Specifically, the detachable replacement interface 21 is cylindrical or flared, the opening size of the detachable replacement interface 21 matches the opening size of the connecting sleeve 24, and the through groove is adapted to the size of the movable end of the engaging telescopic block 43.

[0037] During operation, different detachable and replaceable interfaces 21 can be selected according to the size of the valve opening, ensuring that valve bodies with different opening sizes can be processed without changing the piston.

[0038] Specifically, the clamping mechanism 4 includes a rotating ring 41, which is mounted on a drive connecting rod 11 on one side. A placement frame 47 is mounted on the outer side of the rotating ring 41. A clamping block 46 is mounted in the placement frame 47. A clamping air rod 45 is mounted between the clamping block 46 and the placement frame 47. Telescopic displacement frames 42 are movably connected to the upper two sides of the placement frame 47. A locking telescopic block 43 is mounted on the telescopic displacement block on one side. A limit groove 44 is mounted on the side of the placement frame 47.

[0039] Specifically, there are four sets of telescopic displacement frames 42. The telescopic displacement frames 42 are symmetrically distributed on the placement frame 47, and the locking telescopic blocks 43 are symmetrically distributed on the telescopic displacement frames 42. A central positioning mechanism 3 is connected to the telescopic displacement frame 42 on the other side.

[0040] Specifically, the central positioning mechanism 3 includes a detection clamping soft block 34. Each telescopic displacement frame 42 is equipped with a detection clamping soft block 34. One of the detection clamping soft blocks 34 is provided with a central positioning rod 31. The central positioning rod 31 is movably connected to a connecting column 32. The end of the electrically controlled telescopic column is provided with a positioning head 37. The inner surface of the detection clamping soft block 34 is provided with a second central detection rod 35. A telescopic limiting rod 33 is provided between the second central detection rod 35 and the electrically controlled telescopic column. A telescopic air rod 36 is provided on the side of the second central detection rod 35.

[0041] Specifically, the telescopic limiting rod 33 is located on the vertical bisector of the second central detection rod 35, and the second central detection rod 35 is located on the upper inner side of the detection clamping soft block 34. The telescopic limiting rod 33 is movably connected to the electrically controlled telescopic column, and a locking ring is provided at the end of the telescopic limiting rod 33, which is connected in cooperation with the electrically controlled telescopic rod.

[0042] During operation, the center is obtained by intersecting the perpendicular segments of the lines connecting the two points of the two arcs, thus determining the location of the center of the valve body opening. However, since the diameter of the valve body may change, the length of the perpendicular segment also needs to change to ensure accurate measurement. Therefore, a telescopic limiting rod 33 is used for the perpendicular segment, which can change the length according to the valve body diameter, making it easier to detect the center position.

[0043] Working principle: During use, the valve body to be treated with abrasive flow is placed between two clamping blocks 46. The clamping blocks 46 then clamp the valve body using the clamping air rod 45. Since the valve body's diameter is generally standardized during manufacturing, the opening size can be manually determined based on the valve body's opening. A suitable detachable replacement interface 21 is then selected based on the opening size and installed onto the connecting sleeve 24. During the installation of the detachable replacement interface 21 and the connecting sleeve 24, the insertion block 25 is aligned with the insertion slot, and then inserted into the insertion slot to complete the installation of the detachable replacement interface 21. Finally, the length of the telescopic limiting rod 33 is adjusted according to the opening size. The length of the telescopic limiting rod 33 is the opening radius. Then, the telescopic displacement frame 42 with the detection clamping soft block 34 is moved closer to the valve body opening. When the detection clamping soft block 34 touches the valve body opening, it drives the control rod to move synchronously. After the detection clamping soft block 34 moves, one end of the second central detection rod 35 will not contact the detection clamping soft block 34. At this time, the telescopic air rod 36 shifts the position of the second central detection rod 35, so that both ends of the second central detection rod 35 are in contact with the inner wall of the detection clamping soft block 34. When the angle of the second central detection rod 35 changes, it drives the telescopic limiting rod 33 to change angle, so that its end is positioned on the central positioning rod 3. When the electrically controlled telescopic column on 1 moves, the center position of the valve body opening is determined. Then, the locking telescopic block 43 is activated to lock the electrically controlled telescopic column. Then, the telescopic displacement frame 42 connected to the center positioning mechanism 3 is reset. At this time, the electrically controlled telescopic column disengages from the locking ring, completing the center positioning of the valve body. Then, the position of the placement frame 47 is changed by rotating the ring 41, so that it is located between the upper piston 14 and the lower piston 15. The position of the placement frame 47 is fixed by the limiting component 12. Then, the electrically controlled telescopic column is activated. Since the center of the detachable replacement interface 21 and the center of the positioning head 37 may not coincide at this time, the electrically controlled telescopic column will abut against the guide rod 23 when it moves the positioning head 37. When the guide rod 23 is in contact with the positioning head 37, the connecting sleeve 24 will gradually move. During the movement of the connecting sleeve 24, the piston will also move until the positioning head 37 is inserted into the positioning ring 22. At this time, the center of the detachable replacement interface 21 is automatically aligned with the center of the valve port. Then, the valve body is moved by the drive component 13, and finally the detachable replacement interface 21 is in contact with the valve body port wall. Then, the abrasive flow is injected through the inlet on the piston. Then, the piston is started, and the valve body is polished by the relative movement of the upper piston 14 and the lower piston 15 (when performing the next processing, the electrically controlled telescopic column located on the locking telescopic block 43 is removed and reconnected to the locking ring on the telescopic limit rod 33).

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; 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 or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An abrasive flow polishing device for valve bodies, comprising a base (1), an upper piston (14), and a lower piston (15), characterized in that; It also includes a clamping mechanism (4) for limiting and clamping the valve body, a center positioning mechanism (3) for detecting and judging the center point of different valve body ports after clamping, and a connecting mechanism (2) for aligning the upper piston (14) and lower piston (15) with the center position of the valve body. A drive assembly (13) is provided above the base (1). The drive assembly (13) includes a drive connecting rod (11). A drive motor is provided on the drive connecting rod (11). A limit assembly (12) is provided on the drive connecting rod (11). The limit assembly (12) includes a limit ring and an elastic limit block. The elastic limit block is located in the limit ring. Movable frames are provided at the upper and lower ends of the drive connecting rod (11). The upper and lower movable frames are respectively connected to the corresponding upper piston (14) and lower piston (15). The clamping mechanism (4) includes a rotating ring (41), which is mounted on a drive connecting rod (11) on one side. A placement frame (47) is mounted on the outside of the rotating ring (41). A clamping block (46) is mounted in the placement frame (47). A clamping air rod (45) is mounted between the clamping block (46) and the placement frame (47). Telescopic displacement frames (42) are movably connected to the upper sides of the placement frame (47). A locking telescopic block (43) is mounted on one side of the telescopic displacement frame (42). A limit groove (44) is mounted on the side of the placement frame (47). The central positioning mechanism (3) includes a detection clamping soft block (34). Each telescopic displacement frame (42) is equipped with multiple control rods. The ends of the multiple control rods are equipped with detection clamping soft blocks (34). One of the detection clamping soft blocks (34) is provided with a central positioning rod (31). The central positioning rod (31) is movably connected to an electrically controlled telescopic column. The end of the electrically controlled telescopic column is provided with a positioning head (37). The inner surface of the detection clamping soft block (34) is provided with a second central detection rod (35). A telescopic limiting rod (33) is provided between the second central detection rod (35) and the electrically controlled telescopic column. A telescopic air rod (36) is provided on the side of the second central detection rod (35). The connecting mechanism (2) includes a connecting sleeve (24) and a positioning ring (22). The ends of the upper piston (14) and the lower piston (15) are connected to one end of the connecting sleeve (24). Each connecting sleeve (24) has an insertion groove on the other end. The other end of the connecting sleeve (24) is connected to a detachable replacement interface (21). An insertion block is provided on the detachable replacement interface (21). The insertion block corresponds to the position of the insertion groove. A docking groove is provided on one side of the detachable replacement interface (21). Several guide rods (23) are provided in the detachable replacement interface (21). The end of the guide rod (23) is connected to the positioning ring (22). The end of the connecting sleeve (24) is provided with a movable ring (27). The movable ring (27) is connected to the corresponding upper valve body and lower valve body respectively. An installation ring (26) is provided outside the movable ring (27). The telescopic limiting rod (33) is located on the vertical bisector of the second center detection rod (35), and the second center detection rod (35) is located on the upper inner side of the detection clamping soft block (34). The telescopic limiting rod (33) is movably connected to the electrically controlled telescopic column, and the center positioning rod (31) is on the center line of the detection clamping soft block (34).

2. The abrasive flow polishing equipment for valve bodies according to claim 1, characterized in that; The detachable replacement interface (21) is cylindrical or flared. The opening size of the detachable replacement interface (21) matches the opening size of the connecting sleeve (24). The detachable replacement interface (21) has a through groove, and the through groove is adapted to the size of the movable end of the snap-fit ​​telescopic block (43).

3. The abrasive flow polishing equipment for valve bodies according to claim 1, characterized in that; The mounting ring (26) has a hollow through-hole structure, and the inner diameter of the through-hole of the mounting ring (26) is larger than the outer diameter of the connecting sleeve (24).

4. The abrasive flow polishing equipment for valve bodies according to claim 1, characterized in that; There are four sets of telescopic displacement frames (42). The telescopic displacement frames (42) are symmetrically distributed on the placement frame (47) and the locking telescopic blocks (43) are symmetrically distributed on the telescopic displacement frames (42). A central positioning mechanism (3) is connected to the telescopic displacement frame (42) on the other side.

Images