A ball valve ball grinding equipment and grinding process

Abstract

This invention discloses a ball valve ball grinding equipment and grinding process, belonging to the technical field of ball valve ball grinding equipment. The invention includes a frame, with a support frame fixedly installed on the inner side of the frame. An adjusting component is mounted on the support frame, and a grinding machine is fixedly installed at the output end of the support frame. A drive motor and an electric push rod are fixedly installed on the upper surface of a movable seat, and a fixed shaft is fixedly installed at the output end of the drive motor. A movable rod is telescopically connected to the fixed shaft, and hinge components are connected at equal angles to both the fixed shaft and the movable rod. Clamping blocks for holding and positioning the ball are connected to the outer sides of the hinge components on both the fixed shaft and the movable rod. This ball valve ball grinding equipment and grinding process can adaptively adjust and clamp balls of different sizes, and employs multiple positioning methods, effectively improving grinding accuracy. Furthermore, it allows for automatic cleaning of the ball surface after grinding.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ball valve ball grinding equipment, in particular to a ball valve ball grinding equipment and grinding process. BACKGROUND

[0002] As the core control component in the industrial pipeline system, the sealing performance and service life of the ball valve directly depend on the machining precision of the ball part, and the outer wall grinding needs to be performed by using a grinding equipment in the ball valve ball machining process.

[0003] The prior art (China patent with publication number CN208276655U and publication date of December 25, 2018) discloses a grinding machine for ball valve ball grinding, which comprises a rack, a power support plate, a gear box, a driving motor, a tail seat support plate and a tail seat clamping mechanism; the gear box is provided with a ball driving shaft and a grinding power shaft; the end of the ball driving shaft is connected with an extension shaft; a driving wheel is installed on the upper end of the grinding power shaft; a cantilever beam is arranged on the upper part of the support sleeve, and a grinding shaft is installed on the end of the cantilever beam; a driven wheel is installed on the upper grinding shaft of the cantilever beam, and a transmission member is installed between the driving wheel and the driven wheel; a suspension bracket is installed on the lower end of the grinding shaft, and a telescopic arm is arranged on the suspension bracket; a rocker is arranged on one end of the telescopic arm in the vertical direction; the lower end of the rocker is connected with a grinding frame; a grinding tool for preventing the valve seat sealing surface is installed on the lower end of the grinding frame; the use is convenient, the ball machining efficiency and quality are improved, the sealing performance after cooperation with the valve seat is good; the difficulty of ball workpiece grinding is reduced;

[0004] The prior art (China patent with publication number CN111113198B and publication date of September 29, 2020) discloses a spherical surface grinding device for ball valve core, and particularly relates to the field of ball valve core machining, which comprises a workbench, a rotating table is arranged on the top of the workbench, a multi-ball core clamping mechanism is arranged on the top of the rotating table, grinding outer plates are arranged on the two sides of the multi-ball core clamping mechanism, the two grinding outer plates are driven by a reciprocating mechanism to make reciprocating linear motion, and are used for grinding the spherical surface of the ball core fixed by the multi-ball core clamping mechanism; a gear groove is arranged on the outer wall of the rotating table, and a driving gear meshing with the gear groove is arranged on the rear side of the rotating table; the spherical surface grinding device can grind multiple ball cores at the same time, greatly improving the work efficiency; when the contact surface between the grinding outer plate and the ball core is worn, the position of the multi-ball core clamp can be changed and the grinding surface of the grinding outer plate and the ball core can be replaced by driving the rotating table through the driving gear; the use is very convenient, the adjustment is fast, and the machining efficiency and the ball core precision will not be affected;

[0005] The existing ball valve ball grinding equipment has a single fixing structure for the ball during grinding, cannot adaptively adjust and fix according to the size of the ball, has limited positioning stability of the ball, and further affects the subsequent grinding precision, thereby having certain use defects. SUMMARY

[0006] The purpose of the present application is to provide a ball valve ball grinding equipment and grinding process to solve the above background technology proposed by the current market ball valve ball grinding equipment for the fixed structure of the ball, which cannot be self-adapted according to the size of the ball. Fixed, resulting in limited positioning stability of the ball, which will affect the subsequent grinding accuracy.

[0007] To achieve the above purpose, the present application provides the following technical scheme: a ball valve ball grinding equipment, comprising a rack, the inner side of the rack is fixedly installed with a support frame, and the support frame is installed with an adjusting assembly, and the output end of the support frame is fixedly installed with a grinding machine;

[0008] The inner side of the rack is also fixedly installed with a third linear motor, and the output end of the third linear motor is fixedly installed with a movable seat, and the upper surface of the movable seat is fixedly installed with a driving motor and an electric push rod, respectively, and the output end of the driving motor is fixedly installed with a fixed shaft, and the fixed shaft is connected with an active rod in an extension mode, and the fixed shaft and the active rod are both connected with a hinged assembly at equal angles, the outer side of the hinged assembly on the fixed shaft and the active rod is connected with a clamping block for clamping and positioning the ball, and the clamping block is provided with an adsorption assembly for adsorbing the inner wall of the ball.

[0009] Preferably, the adjusting assembly comprises a first linear motor fixedly installed horizontally on the outer side of the rack, the output end of the first linear motor is fixedly installed vertically with a second linear motor, and the output end of the second linear motor is fixedly installed with a grinding machine, and the positions of the grinding machine and the third linear motor are arranged in an up-down corresponding mode.

[0010] Preferably, the fixed shaft and the active rod are coaxially arranged, and the fixed shaft and the active rod are elastically connected in an extension mode, and a first spring is fixedly connected between the fixed shaft and the active rod.

[0011] Preferably, the output end of the electric push rod is rotatably connected with a push block, and the electric push rod is extended to drive the active rod and the fixed shaft to elastically adjust through the push block.

[0012] Preferably, the hinged assembly comprises a first connecting rod rotatably connected to the outer side of the fixed shaft and the active rod, one end of the first connecting rod close to the ball is rotatably connected with a connecting seat, and a second connecting rod is hingedly connected between the connecting seat and the clamping block, and the fixed shaft and the active rod are adjusted in an extension mode, and the clamping block is moved and adjusted through the first connecting rod.

[0013] Preferably, the clamping blocks are arranged at equal angles on the outer side of the fixed shaft, and the clamping blocks are arranged in an arc structure, and the clamping blocks are attached to the inner wall of the ball to achieve clamping and positioning.

[0014] Preferably, the clamping block is made of elastic metal, and two second connecting rods are symmetrically hinged to the upper end of the connecting seat. The upper ends of the two second connecting rods are respectively hinged to the two side edges of the clamping block. At the same time, the second connecting rods drive the clamping block to undergo elastic deformation during rotation.

[0015] Preferably, the adsorption assembly includes an adsorption element that is fixedly installed through the center of the clamping block, with one end of the adsorption element near the sphere sealed against the inner wall of the sphere. A piston sheet is slidably installed on the inner side of the adsorption element, and a second spring is fixedly connected between the piston sheet and the adsorption element. Meanwhile, two steel ropes are symmetrically fixedly connected to the outer side of the piston sheet, and the ends of the steel ropes away from the adsorption element are fixedly connected to the edge of the clamping block. During the deformation of the clamping block, the steel ropes pull the piston sheet to slide on the inner side of the adsorption element.

[0016] Preferably, an elastic bladder is fixedly connected between the clamping block and the fixed shaft, and an air tube is connected to the outside of the elastic bladder, with the opening of the air tube facing the outer wall of the sphere.

[0017] A grinding process for a ball valve ball grinding machine includes the following steps:

[0018] S1. The ball is placed on the outside of the clamping block. The electric push rod is controlled to drive the push block to move and contact the push rod and the fixed shaft for elastic extension and contraction adjustment, so that the first connecting rod rotates, thereby pushing the clamping block to move, so that the center position of the clamping block is in contact with the inner wall of the ball.

[0019] S2. Continue to push the fixed shaft and movable rod to extend and retract, so that the second connecting rod rotates, thereby pushing the clamping block to undergo elastic deformation. The deformed clamping block fits against the inner wall of the sphere, and at the same time, the adsorption component can adsorb and fix the inner wall of the sphere.

[0020] S3. Control the grinding machine to move closer to the outer wall of the sphere, and start the grinding machine and drive motor at the same time to achieve grinding of the outer wall of the sphere;

[0021] S4. After grinding is completed, control the push block to reset, so that the clamping block is close to the fixed shaft, thereby squeezing the elastic bladder and causing the air tube to blow air onto the outer wall of the bladder to achieve automatic cleaning.

[0022] Compared with the prior art, the beneficial effects of the present invention are: the ball valve ball grinding equipment and grinding process can adaptively adjust and hold balls of different sizes, and adopts multiple positioning methods, which effectively improves the grinding accuracy, and can automatically clean the ball surface after grinding. The specific contents are as follows;

[0023] 1. It is equipped with a fixed shaft, a movable rod, a first connecting rod and a clamping block. The ball is placed on the outside of the clamping block. At the same time, the electric push rod is controlled to push the fixed shaft and the movable rod to extend and retract through the push block. This allows the first connecting rod to rotate, thereby driving multiple clamping blocks to expand outward, thus achieving initial contact and clamping of the inner wall of the ball.

[0024] Furthermore, a second link is provided. As the movable rod continues to move, the second link can rotate under force, causing the two sides of the clamping block to be stressed, causing the clamping block to undergo elastic deformation, thereby changing the curvature and fitting against the inner wall of the sphere, increasing the contact area between the clamping block and the inner wall of the sphere, thereby further improving the clamping stability of the sphere.

[0025] 2. An adsorption component is provided. As the clamping block moves and contacts the inner wall of the sphere, the open end of the adsorption component will simultaneously contact and adhere to the inner wall of the sphere. To improve the sealing effect, the open end of the adsorption component is made of silicone. As the clamping block deforms, it can pull the piston sheet to move inside the adsorption component through the steel cable, so that the adsorption component can adsorb the inner wall of the sphere, further improving the positioning stability of the sphere.

[0026] 3. It is equipped with an elastic bladder and an air tube. After grinding is completed, the control clamp moves and resets. It can work with the fixed shaft to squeeze the elastic bladder, so that some of the gas in the elastic bladder is discharged through the air tube, thereby realizing automatic air blowing on the outer wall of the ball and achieving a preliminary automatic cleaning effect. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the installation structure of the grinding machine of the present invention;

[0029] Figure 3 This is a schematic diagram of the installation structure of the grinding machine and the movable seat of the present invention;

[0030] Figure 4 This is a schematic diagram of the installation structure of the drive motor and electric push rod of the present invention;

[0031] Figure 5 This is a schematic diagram of the connection structure between the clamping block and the sphere in this invention;

[0032] Figure 6 This is a cross-sectional structural diagram of the fixed shaft and movable rod of the present invention;

[0033] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle;

[0034] Figure 8 This is a schematic diagram of the clamping block mounting structure of the present invention;

[0035] Figure 9 This is a schematic diagram of the installation structure of the first and second connecting rods of the present invention.

[0036] In the diagram: 1. Frame; 2. Support frame; 3. First linear motor; 4. Second linear motor; 5. Grinding machine; 6. Third linear motor; 7. Movable seat; 8. Drive motor; 9. Electric push rod; 10. Fixed shaft; 11. Movable rod; 12. First spring; 13. Push block; 14. First connecting rod; 15. Connecting seat; 16. Second connecting rod; 17. Clamping block; 18. Adsorption component; 19. Piston film; 20. Steel rope; 21. Second spring; 22. Elastic bladder; 23. Air tube. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0038] Example 1: Please refer to Figures 1-7 and Figure 9As shown, the existing ball valve ball grinding equipment has a fixed clamping mechanism structure during use, which cannot be adaptively adjusted according to the ball size, resulting in limited clamping stability. In order to solve this technical problem, this embodiment discloses the following technical content: A ball valve ball grinding equipment includes a frame 1, a support frame 2 is fixedly installed on the inner side of the frame 1, and an adjustment component is installed on the support frame 2. A grinding machine 5 is fixedly installed at the output end of the support frame 2.A third linear motor 6 is fixedly installed on the inner side of the frame 1, and a movable seat 7 is fixedly installed on the output end of the third linear motor 6. A drive motor 8 and an electric push rod 9 are fixedly installed on the upper surface of the movable seat 7, and a fixed shaft 10 is fixedly installed on the output end of the drive motor 8. A movable rod 11 is telescopically connected to the fixed shaft 10, and hinge components are connected at equal angles on the fixed shaft 10 and the movable rod 11. A clamping block 17 for holding the positioning ball is connected to the outside of the hinge components on the fixed shaft 10 and the movable rod 11, and an adsorption component for adsorbing the inner wall of the ball is provided on the clamping block 17. The adjustment component includes a first linear motor that is horizontally fixedly installed on the outside of the frame 1. A motor 3 is included, and a second linear motor 4 is vertically fixedly mounted on the output end of the first linear motor 3. A grinding machine 5 is fixedly mounted on the output end of the second linear motor 4. The grinding machine 5 and the third linear motor 6 are positioned vertically correspondingly. A fixed shaft 10 and a movable rod 11 are coaxially arranged and elastically telescopically connected. A first spring 12 is fixedly connected between the fixed shaft 10 and the movable rod 11. A push block 13 is rotatably connected to the output end of an electric push rod 9. When the electric push rod 9 extends, it pushes the movable rod 11 and the fixed shaft 10 through the push block 13 for elastic telescopic adjustment. The hinge assembly includes components rotatably connected to the fixed shaft 10. The first connecting rod 14 is located outside the movable rod 11, and a connecting seat 15 is rotatably connected to the end of the first connecting rod 14 near the ball. A second connecting rod 16 is hinged between the connecting seat 15 and the clamping block 17. When the fixed shaft 10 and the movable rod 11 are extended and retracted, the clamping block 17 is moved and adjusted by the first connecting rod 14. The clamping block 17 is set at an equal angle outside the fixed shaft 10, and the clamping block 17 has an arc-shaped structure. The clamping block 17 fits against the inner wall of the ball to achieve clamping and positioning. The clamping block 17 is made of elastic metal. Two second connecting rods 16 are symmetrically hinged to the upper end of the connecting seat 15, and the upper ends of the two second connecting rods 16 are respectively hinged to the two side edges of the clamping block 17. Simultaneously, during the rotation of the second connecting rod 16, the clamping block 17 undergoes elastic deformation. The adsorption assembly includes an adsorption element 18 fixedly installed at the center of the clamping block 17, with one end of the adsorption element 18 near the sphere sealed against the inner wall of the sphere. A piston film 19 is interference-slidably mounted on the inner side of the adsorption element 18. A second spring 21 is fixedly connected between the piston film 19 and the adsorption element 18. Two steel cables 20 are symmetrically fixedly connected to the outer side of the piston film 19, with the ends of the steel cables 20 away from the adsorption element 18 fixedly connected to the edge of the clamping block 17. During the deformation of the clamping block 17, the steel cables 20 pull the piston film 19 to slide inside the adsorption element 18.

[0039] The ball valve body to be processed is fitted onto the outside of each clamping block 17. Then, the electric push rod 9 is extended, causing the push block 13 to move and contact the end of the movable rod 11. This pushes the movable rod 11 and the fixed shaft 10 to elastically extend and retract. At this time, the first connecting rod 14 rotates elastically, causing the clamping blocks 17 to expand outwards via the connecting seat 15 and the second connecting rod 16. This allows the center of the clamping block 17 to contact the inner wall of the ball, achieving initial support and fixation of the ball. The push block 13 is then controlled to continue pushing the movable rod 11. The first connecting rod 14 continues to rotate, causing the connecting seat 15 to drive the second connecting rod 16 to rotate. This allows the two sets of second connecting rods 16 to apply force to the two side edges of the clamping block 17, while the center of the clamping block 17 is pressed against the inner wall of the ball, allowing the clamping block 17 to elastically deform. By changing the curvature of the clamping block 17, it can adaptively adjust to fit the inner wall of the sphere of different sizes, thereby increasing the contact support area between the clamping block 17 and the inner wall of the sphere. When the clamping block 17 initially forms the inner wall of the sphere, the adsorption element 18 at its center will be sealed to the inner wall of the sphere by the silicone material at its end. As the clamping block 17 deforms, its edge position will be pulled by the steel rope 20 to the piston film 19 to make interference sliding adjustment on the inner side of the adsorption element 18, so that the adsorption element 18 can be stably adsorbed to the inner wall of the sphere, further improving the positioning effect of the sphere. Then, the drive motor 8 is started, which drives the sphere to rotate at a constant speed through the fixed shaft 10. The first linear motor 3, the second linear motor 4 and the third linear motor 6 are controlled to adjust the position of the grinding machine 5 and the sphere. The grinding machine 5 is started to grind the outer side of the sphere.

[0040] Example 2: The technical content disclosed in this example is a further improvement based on Example 1. Existing ball valve grinding equipment requires manual cleaning of the outer wall of the ball after grinding, thus reducing processing efficiency. To further solve this technical problem, this example discloses the following technical content: Figures 8-9 As shown; an elastic bladder 22 is fixedly connected between the clamping block 17 and the fixed shaft 10, and an air tube 23 is connected to the outside of the elastic bladder 22, with the opening of the air tube 23 facing the outer wall of the sphere.

[0041] After the ball is ground, the electric push rod 9 drives the push block 13 to reset. At this time, the fixed shaft 10 and the movable rod 11 are reset under the elastic force of the first spring 12, so that the clamping block 17 can elastically restore and reset, thereby releasing the positioning of the ball. As the clamping block 17 resets, it will cooperate with the fixed shaft 10 to squeeze the elastic bladder 22, so that the gas in the elastic bladder 22 is ejected through the air tube 23 to clean the outer wall of the ball. When the ball is clamped again in the future, the clamping block 17 will stretch the elastic bladder 22, so that the elastic bladder 22 will draw in air through the air tube 23 for storage.

[0042] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0043] 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 ball valve ball grinding equipment, comprising a rack (1), the inner side of the rack (1) is fixedly installed with a support frame (2), the support frame (2) is installed with an adjusting assembly, and the output end of the support frame (2) is fixedly installed with a grinding machine (5); characterized in that The inner side of the rack (1) is also fixedly installed with a third linear motor (6), and the output end of the third linear motor (6) is fixedly installed with a movable seat (7), and the upper surface of the movable seat (7) is respectively fixedly installed with a driving motor (8) and an electric push rod (9), and the output end of the driving motor (8) is fixedly installed with a fixed shaft (10), and the fixed shaft (10) is telescopically connected with a movable rod (11), and the fixed shaft (10) and the movable rod (11) are both equally angularly connected with a hinged assembly, the outer side of the hinged assembly on the fixed shaft (10) and the movable rod (11) is connected with a clamping block (17) for clamping and positioning the ball, and the clamping block (17) is provided with a suction assembly for suctioning the inner wall of the ball; The fixed shaft (10) and the movable rod (11) are coaxially arranged, and the fixed shaft (10) and the movable rod (11) are elastically telescopic connected, and a first spring (12) is fixedly connected between the fixed shaft (10) and the movable rod (11); The output end of the electric push rod (9) is rotatably connected with a push block (13), and when the electric push rod (9) is elongated, the movable rod (11) and the fixed shaft (10) are elastically telescopic adjusted by the push block (13); The hinged assembly comprises a first connecting rod (14) rotatably connected to the outer side of the fixed shaft (10) and the movable rod (11), one end of the first connecting rod (14) close to the ball is rotatably connected with an adapter seat (15), and a second connecting rod (16) is hinged between the adapter seat (15) and the clamping block (17), and when the fixed shaft (10) and the movable rod (11) are telescopic adjusted, the clamping block (17) is moved and adjusted by the first connecting rod (14); The clamping block (17) is equally angularly arranged on the outer side of the fixed shaft (10), and the clamping block (17) is arranged in an arc shape, and the clamping block (17) is attached to the inner wall of the ball to achieve clamping and positioning; The clamping block (17) is made of elastic metal material, the upper end of the adapter seat (15) is symmetrically hinged with two second connecting rods (16), and the upper ends of the two second connecting rods (16) are respectively hinged to the two side edge positions of the clamping block (17), and the second connecting rod (16) is rotated to drive the clamping block (17) to elastically deform.

2. A ball valve ball grinding apparatus as defined in claim 1, wherein: The adjusting assembly comprises a first linear motor (3) fixedly installed transversely on the outer side of the rack (1), the output end of the first linear motor (3) is vertically fixedly installed with a second linear motor (4), and the output end of the second linear motor (4) is fixedly installed with a grinding machine (5), and the positions of the grinding machine (5) and the third linear motor (6) are correspondingly arranged up and down.

3. A ball valve ball grinding apparatus as defined in claim 1, wherein: The adsorption assembly includes an adsorption component (18) fixedly installed through the center of the clamping block (17), and the adsorption component (18) is sealed and fitted to the inner wall of the sphere at one end close to the sphere, and the inner side of the adsorption component (18) is slidingly installed with a piston rubber sheet (19), the second spring (21) is fixedly connected between the piston rubber sheet (19) and the adsorption component (18), and the outer side of the piston rubber sheet (19) is fixedly connected with two steel wires (20) symmetrically, and the ends of the steel wires (20) away from the adsorption component (18) are fixedly connected to the edge position of the clamping block (17), and the clamping block (17) is pulled to slide the piston rubber sheet (19) on the inner side of the adsorption component (18) through the steel wires (20) during the deformation process.

4. A ball valve ball grinding apparatus as defined in claim 1, wherein: The clamping block (17) and the fixed shaft (10) are fixedly connected with an elastic capsule (22), and the outer side of the elastic capsule (22) is connected with an air pipe (23), and the pipe opening of the air pipe (23) faces the outer wall of the sphere.

5. A ball valve ball grinding apparatus as defined in claim 4, wherein, The grinding process of the grinding device is also included, and the specific method steps are as follows: S1, the sphere is sleeved on the outer side of the clamping block (17), the electric push rod (9) drives the push block (13) to move and contact the elastic expansion adjustment of the fixed shaft (10) and the movable rod (11), so that the first connecting rod (14) rotates to drive the clamping block (17) to move, so that the center position of the clamping block (17) is fitted to the inner wall of the sphere; S2, continue to push the fixed shaft (10) and the movable rod (11) to expand and contract, so that the second connecting rod (16) rotates to drive the clamping block (17) to deform elastically, and the deformed clamping block (17) is fitted to the inner wall of the sphere, and the adsorption component (18) can adsorb and fix the inner wall of the sphere; S3, control the grinding machine (5) to move close to the outer wall of the sphere, and start the grinding machine (5) and the driving motor (8), so as to realize the grinding of the outer wall of the sphere; S4, after grinding, control the push block (13) to reset, so that the clamping block (17) resets close to the fixed shaft (10), so as to squeeze the elastic capsule (22), so that the air pipe (23) blows the outer wall of the sphere to realize automatic cleaning.

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