A smooth, low-torque ball valve ball grinding and processing device

Abstract

This utility model discloses a smooth, low-torque ball valve ball grinding processing device, comprising: a base, an actuator on the upper part of the base and a drive shaft on the power output end of the actuator, a first pressure head on the upper part of the drive shaft, a fixed support frame on the upper part of the base and a hydraulic cylinder on the upper part of the support frame, a linkage fixedly mounted on the surface of the movable frame and a motor on the upper part of the linkage, a drive plate on the power output end of the linkage and a detachable grinding head on the surface of the drive plate, the grinding head contacting the ball body, the drive plate being rotated by the motor and the linkage, the grinding head grinding the ball body, the up-and-down adjustment of the lifting mechanism increasing the grinding area, and the rotation of the ball body driven by the actuator increasing the uniformity of grinding and greatly reducing grinding dead angles.

Description

Technical Field

[0001] This utility model relates to the technical field of ball valve ball grinding and processing device, and more specifically to a smooth low torque ball valve ball grinding and processing device. Background Technology

[0002] A ball valve is a valve in which the opening and closing element (ball) is driven by the valve stem and rotates around the valve axis. It can also be used for fluid regulation and control. Hard-seal V-type ball valves, in particular, have a strong shearing force between the V-shaped ball core and the metal valve seat with hard alloy overlay, making them especially suitable for media containing fibers, small solid particles, etc. The main component of a ball valve is the ball, and the surface roughness of the ball determines the valve's sealing performance. During the manufacturing process of the ball, grinding, lapping, and polishing processes are required.

[0003] Existing grinding equipment results in uneven grinding of the spheres during the grinding process, and also leaves certain grinding dead zones on the sphere surface. Therefore, a new technical solution is needed to address this issue. Utility Model Content

[0004] The purpose of this invention is to provide a smooth, low-torque ball valve ball grinding and processing device, which solves the problems of uneven grinding of the ball during the existing grinding and processing device, and the existence of certain grinding dead angles on the ball surface.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a smooth, low-torque ball valve ball grinding and processing device, comprising: a base, an actuator is provided on the upper part of the base and a drive shaft is provided on the power output end of the actuator, a first pressure head is provided on the upper part of the drive shaft, a fixedly installed support frame is provided on the upper part of the base and a hydraulic cylinder is provided on the upper part of the support frame, a telescopic rod is provided on the power output end of the hydraulic cylinder and a second pressure head is provided on the lower part of the telescopic rod, a ball body is provided between the first pressure head and the second pressure head, a lifting mechanism is provided on the upper part of the base and a side of the lifting mechanism is provided with... The grinding mechanism includes a fixed frame and a fixed plate fixedly connected to a lifting mechanism. The fixed frame and the fixed plate are arranged in an L-shape. A telescopic cylinder is provided on the side of the fixed frame, and a drive rod is provided on the side of the telescopic cylinder. A movable frame is provided on the surface of the fixed plate, and the movable frame is slidably connected to the fixed plate. The drive rod is connected to the movable frame. A linkage is fixedly installed on the surface of the movable frame, and a motor is provided on the upper part of the linkage. A drive plate is provided at the power output end of the linkage, and a detachable grinding head is provided on the surface of the drive plate. The grinding head is in contact with the ball body.

[0006] In a preferred embodiment of the present invention, the lifting mechanism is provided with a sliding groove inside, and a screw is provided inside the sliding groove. A driving device is installed at the bottom of the screw and a lifting block is provided on its surface. The lifting block is fixedly connected to the fixing plate and the fixing frame.

[0007] In a preferred embodiment of this utility model, both the first pressure head and the second pressure head are made of flexible elastic material.

[0008] In a preferred embodiment of this utility model, the surface of the fixed plate is provided with a slide rail and the movable frame is mounted on the surface of the slide rail.

[0009] In a preferred embodiment of this utility model, the lifting mechanism and the grinding mechanism are provided in two sets and are arranged symmetrically.

[0010] In a preferred embodiment of this utility model, the interior of the grinding head is arranged in a semi-circular bowl shape and is in close contact with the sphere body.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This utility model features an actuator on the upper part of a base, with a drive shaft at the power output end of the actuator. A first pressure head is located above the drive shaft. A fixed support frame is also located on the upper part of the base, with a hydraulic cylinder on top of the support frame. A telescopic rod is located at the power output end of the hydraulic cylinder, with a second pressure head at the lower part of the telescopic rod. A ball body is positioned between the first and second pressure heads. This arrangement allows for the fixing and rotation of ball valve balls of different sizes. A lifting mechanism, aligned with two sets of centered components, is located on the upper part of the base, with a grinding mechanism on its side. The grinding mechanism includes a fixed frame and a fixed plate fixedly connected to the lifting mechanism, arranged in an L-shape. A telescopic cylinder is located on the side of the fixed frame, and a... A drive rod is provided, and a movable frame is set on the surface of the fixed plate, with the movable frame slidingly connected to the fixed plate. The drive rod is connected to the movable frame, and the drive rod can be extended or retracted by a telescopic rod, which can move the movable frame on the surface of the fixed plate, thereby adjusting the distance between it and the ball body. A linkage is fixedly installed on the surface of the movable frame, and a motor is set on the upper part of the linkage. A drive plate is set at the power output end of the linkage, and a detachable grinding head is set on the surface of the drive plate. The grinding head is in contact with the ball body. The motor and linkage drive the drive plate to rotate, and the grinding head grinds the ball body. The up and down adjustment of the lifting mechanism increases the grinding area. At the same time, the drive mechanism drives the rotation of the ball body, which increases the uniformity of grinding and greatly reduces the grinding dead angle. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a front view structural diagram of the present invention;

[0015] Figure 3 This is a schematic diagram of the back structure of this utility model;

[0016] Figure 4 This is a top view cross-sectional structural diagram of the present invention.

[0017] In the diagram: 1. Base; 2. Driver; 3. Drive shaft; 4. Ball body; 5. Support frame; 6. Hydraulic cylinder; 7. Lifting mechanism; 8. First pressure head; 9. Second pressure head; 10. Telescopic rod; 11. Movable frame; 12. Linkage device; 13. Drive plate; 14. Motor; 15. Grinding head; 16. Screw; 17. Lifting block; 18. Fixed frame; 19. Telescopic cylinder; 20. Drive rod; 21. Fixed plate; 22. Slide rail. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4This utility model provides a technical solution: a smooth, low-torque ball valve ball grinding and processing device, comprising: a base 1, an actuator 2 is provided on the upper part of the base 1 and a drive shaft 3 is provided on the power output end of the actuator 2, a first pressure head 8 is provided on the upper part of the drive shaft 3, a fixed support frame 5 is provided on the upper part of the base 1 and a hydraulic cylinder 6 is provided on the upper part of the support frame 5, a telescopic rod 10 is provided on the power output end of the hydraulic cylinder 6 and a second pressure head 9 is provided on the lower part of the telescopic rod 10, a ball body 4 is provided between the first pressure head 8 and the second pressure head 9, a lifting mechanism 7 is provided on the upper part of the base 1 and a grinding mechanism is provided on the side of the lifting mechanism 7, the grinding mechanism including a fixed frame 18 fixedly connected to the lifting mechanism 7. The fixed plate 21 and the fixed frame 18 are arranged in an L-shape. The fixed frame 18 is provided with a telescopic cylinder 19 on its side and a drive rod 20 on its side. The fixed plate 21 is provided with a movable frame 11 and is slidably connected to the fixed plate 21. The drive rod 20 is connected to the movable frame 11. The movable frame 11 is fixedly mounted with a linkage 12 and a motor 14 is provided on the upper part of the linkage 12. The power output end of the linkage 12 is provided with a drive plate 13 and a detachable grinding head 15 is provided on the surface of the drive plate 13. The grinding head 15 is in contact with the ball body 4. The driver 2 is provided on the upper part of the base 1 and the power output end of the driver 2 is... A drive shaft 3 is provided, with a first pressure head 8 on the upper part of the drive shaft 3. A fixed support frame 5 is provided on the upper part of the base 1, and a hydraulic cylinder 6 is provided on the upper part of the support frame 5. A telescopic rod 10 is provided at the power output end of the hydraulic cylinder 6, and a second pressure head 9 is provided at the lower part of the telescopic rod 10. A ball body 4 is provided between the first pressure head 8 and the second pressure head 9. This arrangement can fix ball valve balls of different sizes and drive them to rotate. A lifting mechanism 7 is provided on the upper part of the base 1, aligned with two sets of lifting mechanisms. A grinding mechanism is provided on the side of the lifting mechanism 7. The grinding mechanism includes a fixed frame 18 and a fixed plate 21 fixedly connected to the lifting mechanism 7. The fixed frame 18 and the fixed plate 21 are arranged in an L-shape. A grinding mechanism is provided on the side of the fixed frame 18. A telescopic cylinder 19 is provided, and a drive rod 20 is provided on the side of the telescopic cylinder 19. A movable frame 11 is provided on the surface of the fixed plate 21, and the movable frame 11 is slidably connected to the fixed plate 21. The drive rod 20 is connected to the movable frame 11. The telescopic rod 10 drives the drive rod 20 to extend and retract, which can drive the movable frame 11 to move on the surface of the fixed plate 21, thereby adjusting the distance between it and the ball body 4. A linkage 12 is fixedly installed on the surface of the movable frame 11, and a motor 14 is provided on the upper part of the linkage 12. A drive plate 13 is provided at the power output end of the linkage 12, and a detachable grinding head 15 is provided on the surface of the drive plate 13. The grinding head 15 is in contact with the ball body 4. The motor 14 and the linkage 12 drive the drive plate 13 to rotate.The grinding head 15 grinds the ball head body. Its vertical adjustment, combined with the lifting mechanism 7, increases the grinding area. Simultaneously, the drive 2 rotates the ball body 4, increasing the uniformity of grinding and significantly reducing grinding dead zones.

[0020] Further improvements, such as Figure 3 As shown: The lifting mechanism 7 has a sliding groove inside and a screw 16 inside the sliding groove. A driving device is installed at the bottom of the screw 16 and a lifting block 17 is provided on its surface. The lifting block 17 is fixedly connected to the fixing plate 21 and the fixing frame 18. By driving the screw 16 in the sliding groove, the up and down movement of the lifting block 17 can be precisely controlled, thereby adjusting the contact pressure and grinding depth between the grinding head 15 and the ball body 4, and improving the grinding accuracy and uniformity.

[0021] Further improvements, such as Figure 2 As shown: The first pressure head 8 and the second pressure head 9 are both made of flexible elastic material. The flexible elastic material can better adapt to the ball body 4 of different sizes, ensuring that the ball body 4 is stably and evenly clamped during the grinding process, avoiding grinding deviation or ball damage caused by uneven clamping force.

[0022] Further improvements, such as Figure 4 As shown: The surface of the fixed plate 21 is provided with a slide rail 22 and the movable frame 11 is installed on the surface of the slide rail 22. The slide rail 22 provides a stable sliding path for the movable frame 11, ensuring that the movement trajectory of the grinding head 15 during the grinding process is more accurate and stable.

[0023] Further improvements, such as Figure 2 As shown: The lifting mechanism 7 and the grinding mechanism are provided in two sets and are symmetrically arranged. The two sets of lifting mechanisms 7 and grinding mechanisms can grind the two hemispheres of the sphere body 4 at the same time, which greatly improves the grinding efficiency, ensures the uniformity of grinding, and reduces grinding dead angles.

[0024] Further improvements, such as Figure 2 As shown: The interior of the grinding head 15 is arranged in a semi-circular bowl shape and fits against the ball body 4. The semi-circular bowl-shaped grinding head 15 can better fit the curved surface of the ball body 4, so that the contact area between the grinding head 15 and the ball body 4 is larger during the grinding process, the grinding effect is more uniform, and the defects on the surface of the ball can be removed more effectively.

[0025] Furthermore, a description of the innovative aspects and substantial technical effects of this solution.

[0026] The innovation of this solution lies in:

[0027] 1. Multi-dimensional linkage grinding structure: The drive unit rotates the ball, while the lifting mechanism drives the grinding head to move up and down. The telescopic cylinder adjusts the distance between the grinding head and the ball to form a three-dimensional grinding trajectory.

[0028] 2. Symmetrical dual grinding mechanism: Two sets of symmetrical lifting mechanisms and grinding heads are set up, which can grind the two hemispheres of the ball at the same time to achieve synchronous processing.

[0029] 3. Flexible clamping and curved surface fit design: The first and second pressure heads are made of flexible elastic material, and the inside of the grinding head is a semi-circular bowl-shaped structure that fits tightly against the curved surface of the sphere.

[0030] The substantive technical effects of this solution are as follows:

[0031] 1. Improved grinding uniformity: Multi-dimensional linkage grinding combined with ball rotation ensures that the grinding force is evenly distributed on the ball surface, reducing local over-grinding or under-grinding.

[0032] 2. Improved grinding efficiency: The symmetrical dual grinding mechanism operates synchronously, which is equivalent to increasing the grinding contact area and shortening the overall grinding time.

[0033] 3. Reduced grinding dead angles: The arc-shaped grinding head design combined with the three-dimensional motion trajectory covers more areas of the sphere, especially the edges and curvature changes that are difficult to reach with traditional devices.

[0034] Specifically, a comparison of relevant test data and practical application data for this solution.

[0035] Technical indicators Traditional grinding equipment This utility model device Increase grinding dead angle ratio 8％ 2.5％ 68.75％ Surface roughness Ra value 1.2μm 0.7μm 41.67％ Single ball grinding time 15min 12min 20％

[0036] Data Description

[0037] Grinding dead zone ratio: refers to the proportion of the sphere surface that is not effectively covered by the grinding head, which is calculated by 3D scanning and mapping of grinding marks on the sphere surface.

[0038] Surface roughness Ra value: The surface roughness Ra of the sphere was measured using a stylus-type roughness tester at the equatorial surface and the polar regions, and the average value of 5 points was taken.

[0039] Single-sphere grinding time: refers to the total time from clamping the sphere to achieving a grinding standard with a roughness of Ra 0.8 μm or less, including equipment adjustment time.

[0040] Data Validity Statement

[0041] Experimental conditions control: Both sets of devices used silicon carbide grinding heads of the same specifications (particle size #800), the grinding pressure was uniformly set to 0.3MPa, and the ball material was 304 stainless steel (diameter 50mm).

[0042] Repeatability verification: Each experiment was repeated 10 times. After removing outliers, the average value was taken. The data fluctuation range was less than ±5%, which was statistically significant.

[0043] Fairness of comparison: Traditional devices are mainstream single-axis grinding equipment in the market, while the grinding parameters (such as speed and pressure) of this utility model device are all within the adjustable range of traditional devices, ensuring consistency in the comparison dimensions.

[0044] Working Principle: The ball body 4 is placed between the first pressure head 8 and the second pressure head 9. The hydraulic cylinder 6 drives the telescopic rod 10 to lower the second pressure head 9, which, together with the first pressure head 8, stably clamps the ball body 4. At this time, the driver 2 drives the ball body 4 to perform initial rotational positioning via the drive shaft 3, ensuring the ball body 4 remains stable during grinding and avoiding uneven grinding due to shaking or displacement. The telescopic cylinder 19 drives the drive rod 20, causing the movable frame 11 to slide on the slide rail 22, thereby adjusting the distance between the grinding head 15 and the ball body 4. Simultaneously, the lifting mechanism 7 drives the lifting block 17 via the screw 16, causing the grinding head 15 to move up and down until it contacts the surface of the ball body 4, achieving precise alignment and contact pressure adjustment between the grinding head 15 and the ball body 4, providing stable support for subsequent grinding operations. The motor 14 is started, driving the drive plate 13 to rotate via the linkage 12, thereby driving the grinding head 15 to grind the ball body 4. Simultaneously, the lifting mechanism 7 adjusts up and down according to grinding requirements to increase the grinding area. The actuator 2 continues to drive the ball body 4 to rotate, coordinating with the movement trajectory of the grinding head 15 to achieve comprehensive and uniform grinding. Through the drive of the motor 14 and the cooperation of the lifting mechanism 7, the grinding head 15 achieves comprehensive and uniform grinding of the ball body 4, greatly improving grinding efficiency and quality. Simultaneously, the rotation of the ball body 4 further reduces grinding dead angles, ensuring grinding uniformity. Through precise adjustment of the grinding head 15, stable ball clamping, and comprehensive grinding operation control, efficient and uniform grinding of the ball body 4 is achieved. This not only improves grinding efficiency and quality but also reduces the risk of grinding dead angles and ball damage, providing strong technical support for the production and processing of ball valves.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0046] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc., are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0047] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A smooth, low-torque ball valve ball grinding and processing device, characterized in that: include: A base (1) is provided with a driver (2) on its upper part and a drive shaft (3) on the power output end of the driver (2). A first pressure head (8) is provided on the upper part of the drive shaft (3). A fixed support frame (5) is provided on the upper part of the base (1) and a hydraulic cylinder (6) is provided on the upper part of the support frame (5). A telescopic rod (10) is provided on the power output end of the hydraulic cylinder (6) and a second pressure head (9) is provided on the lower part of the telescopic rod (10). A ball body (4) is provided between the first pressure head (8) and the second pressure head (9). A lifting mechanism (7) is provided on the upper part of the base (1) and a grinding mechanism is provided on the side of the lifting mechanism (7). The grinding mechanism includes a fixed frame (18) and a fixed plate (18) fixedly connected to the lifting mechanism (7). 21) The fixed frame (18) and the fixed plate (21) are arranged in an L-shaped structure. The side of the fixed frame (18) is provided with a telescopic cylinder (19) and the side of the telescopic cylinder (19) is provided with a drive rod (20). The surface of the fixed plate (21) is provided with a movable frame (11) and the movable frame (11) is slidably connected to the fixed plate (21). The drive rod (20) is connected to the movable frame (11). The surface of the movable frame (11) is fixedly installed with a linkage (12) and the upper part of the linkage (12) is provided with a motor (14). The power output end of the linkage (12) is provided with a drive plate (13) and the surface of the drive plate (13) is provided with a detachable grinding head (15). The grinding head (15) is in contact with the ball body (4).

2. The smooth low-torque ball valve ball grinding and processing device according to claim 1, characterized in that: The lifting mechanism (7) has a sliding groove inside and a screw (16) inside the sliding groove. A driving device is installed at the bottom of the screw (16) and a lifting block (17) is provided on its surface. The lifting block (17) is fixedly connected to the fixing plate (21) and the fixing frame (18).

3. The smooth low-torque ball valve ball grinding and processing device according to claim 1, characterized in that: Both the first pressure head (8) and the second pressure head (9) are made of flexible elastic material.

4. The smooth low-torque ball valve ball grinding and processing device according to claim 1, characterized in that: The surface of the fixed plate (21) is provided with a slide rail (22) and the movable frame (11) is installed on the surface of the slide rail (22).

5. The smooth low-torque ball valve ball grinding and processing device according to claim 1, characterized in that: The lifting mechanism (7) and the grinding mechanism are provided in two sets and are arranged symmetrically.

6. The smooth low-torque ball valve ball grinding and processing device according to claim 1, characterized in that: The grinding head (15) has a semi-circular bowl-shaped structure inside and fits against the sphere body (4).

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