Adjustable positioning and clamping device for high-precision grinding of ball valve spool

Abstract

This utility model discloses an adjustable positioning and clamping device for high-precision grinding of ball valve cores, applied in the field of ball valve processing positioning device technology. It includes a support base with a raised step fixedly connected to its top. The top of the raised step has equidistant circumferentially spaced universal grooves, with universal balls slidably connected inside the universal grooves. A pressure plate is provided on the top of the support base, and a pressure roller is rotatably connected to the pressure plate. The support base has symmetrically arranged sliding grooves. This utility model, by designing a rotating mechanism between the two sliding grooves, allows the ball valve core placed on the raised step to rotate around its central hole under the action of the universal balls and the pressure roller on the pressure plate. Combined with grinding by an external grinding device, it enables reciprocating rotation and cyclic grinding of the ball valve core, eliminating the need for manual changing of the grinding area and improving grinding efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of ball valve processing positioning devices, and specifically relates to an adjustable positioning and clamping device for high-precision grinding of ball valve cores. Background Technology

[0002] A ball valve is a valve in which the valve core is a ball driven by the valve stem and rotates around the valve axis. It can also be used for fluid regulation and control. Among them, the hard-seal V-type ball valve has a strong shearing force between the V-shaped ball core and the metal valve seat with hard alloy overlay, making it particularly suitable for media containing fibers, small solid particles, etc.

[0003] During the processing of ball valve cores, a surface grinding process is required to make the surface of the ball valve core smooth, thereby ensuring the sealing performance of the ball valve. Currently, grinding equipment is required for ball valve core grinding. The grinding equipment needs to fix the ball valve core during grinding, and a positioning clamping device is used for fixing. Traditional positioning clamping devices are mostly annular support platforms with a hollow center. The ball valve core is placed on the support platform, and a pressure plate passes through the central hole of the ball valve core to press the ball valve core onto the support platform for fixation.

[0004] Currently, although traditional positioning and clamping devices can achieve the purpose of fixing the ball valve core, there are still some problems in their use. For example, when fixing the ball valve core, traditional positioning and clamping devices cannot make the ball valve core rotate around the valve core hole as the center. When the grinding equipment grinds the surface of the ball valve core, after the grinding of one area of ​​the ball valve core is completed, when it is necessary to change the grinding area, the pressure plate needs to be disassembled and loosened, and the ball valve core needs to be rotated to the next grinding area by means of mechanical means on the support table, which causes serious time waste and reduces grinding efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide an adjustable positioning and clamping device for high-precision grinding of ball valve cores, which has the advantages of high grinding efficiency and strong applicability.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an adjustable positioning and clamping device for high-precision grinding of ball valve cores, including a support base, a raised step fixedly connected to the top of the support base, universal sliding grooves equidistantly opened on the top of the raised step, universal balls slidably connected inside the universal sliding grooves, a pressure plate provided on the top of the support base, a pressure roller rotatably connected to the pressure plate, sliding grooves symmetrically opened on the support base, a rotating mechanism provided between the two sliding grooves, a bracket provided inside the sliding grooves, and hydraulic cylinders symmetrically assembled at the bottom of the support base, the output end of the hydraulic cylinders penetrating into the interior of the sliding grooves and fixedly connected to the brackets.

[0007] The above technical solution is as follows: This utility model incorporates a rotating mechanism between two sliding grooves. This rotating mechanism drives the ball valve core placed on the raised step to rotate around the central hole of the ball valve core under the action of the universal ball and the pressure roller on the pressure plate. Combined with the grinding of the external grinding device, the ball valve core can be reciprocated and cyclically ground without the need for personnel to change the grinding area, thus improving grinding efficiency. Furthermore, a support is designed inside the sliding groove, and a hydraulic cylinder is installed at the bottom of the support. The hydraulic cylinder can adjust the height of the support, allowing the height of the adjustment mechanism between the two supports to be adjusted. When ball valve cores of different diameters are placed on the raised step, the height of the rotating mechanism can be adjusted to drive the rotation of ball valve cores of different sizes, improving applicability.

[0008] The present invention is further configured such that the rotating mechanism includes a connecting rod disposed between two sliding grooves, a rotating wheel is fixedly sleeved on the surface of the connecting rod, and a drive motor is bolted to one end of the bracket.

[0009] The above technical solution is adopted as follows: when the drive motor starts, it can drive the connecting rod to rotate. The rotation of the connecting rod can drive the rotating wheel to rotate. When the ball valve core is on the raised step of the support seat, the rotating wheel contacts the surface of the ball valve core. The rotation of the rotating wheel drives the ball valve core to rotate under the action of the universal ball.

[0010] The present invention is further configured such that both ends of the pressure plate are provided with limiting bolts, one end of the limiting bolts passing through to the bottom of the pressure plate and threadedly connected to the top of the support base.

[0011] The above technical solution facilitates fixing the pressure plate to the support base, ensuring that the pressure roller on the pressure plate is in close contact with the central hole wall of the ball valve core.

[0012] The present invention is further configured such that a fixing seat is symmetrically fixedly connected to the bottom of the support base, and a fixing hole is provided on the surface of the fixing seat.

[0013] The above technical solution facilitates the support and fixation of the support base.

[0014] The present invention is further configured such that a sliding guide block is mounted on the bracket, and a sliding guide groove is provided inside the sliding groove to slide in connection with the sliding guide block.

[0015] By adopting the above technical solution, when the bracket moves up and down inside the sliding groove, the bracket can be slidably limited.

[0016] The present invention is further configured such that both brackets are rotatably connected to the connecting rod, and the drive motor is fixedly connected to the bracket.

[0017] The above technical solution facilitates the fixing of the connecting rod and the drive motor onto the bracket, allowing the connecting rod to change with the height of the bracket.

[0018] The present invention is further configured such that the support base is made of stainless steel.

[0019] The above technical solution improves the wear and corrosion resistance of the support base.

[0020] In summary, this utility model has the following beneficial effects: 1. This utility model has a rotating mechanism designed between two sliding grooves. The rotating mechanism can drive the ball valve core placed on the raised step to rotate around the central hole of the ball valve core under the action of the pressure roller on the universal ball and pressure plate. With the grinding of the external grinding device, the ball valve core can be reciprocated and cyclically ground without the need for the operator to change the grinding area, thus improving the grinding efficiency. 2. This utility model features a bracket designed inside the sliding groove and a hydraulic cylinder installed at the bottom of the support base. The hydraulic cylinder can adjust the height of the bracket, allowing the height of the adjustment mechanism installed between the two brackets to be adjusted. When ball valve cores of different diameters are placed on the raised step, the height of the rotating mechanism can be adjusted to drive the rotation of ball valve cores of different sizes, thus improving applicability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a top sectional view of a partial structure of this utility model; Figure 3 This is a partial structural schematic diagram of the present invention; Figure 4 This is a schematic diagram of the pressure plate of this utility model; Figure 5 This is a schematic diagram of the installation and use of this utility model.

[0022] Reference numerals in the attached drawings: 1. Support base; 2. Raised step; 3. Universal slide groove; 4. Universal ball; 5. Pressure plate; 6. Pressure roller; 7. Sliding groove; 8. Rotating mechanism; 81. Connecting rod; 82. Rotating wheel; 83. Drive motor; 9. Bracket; 10. Hydraulic cylinder; 11. Limit bolt; 12. Fixed base; 13. Sliding guide block; 14. Sliding guide groove. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings.

[0024] Example 1: refer to Figure 1, Figure 2 , Figure 3 , Figure 4 and Figure 5 An adjustable positioning and clamping device for high-precision grinding of ball valve cores includes a support base 1. A raised step 2 is fixedly connected to the top of the support base 1. Universal grooves 3 are equidistantly circumferentially formed on the top of the raised step 2. Universal balls 4 are slidably connected inside the universal grooves 3. A pressure plate 5 is set on the top of the support base 1. A pressure roller 6 is rotatably connected to the pressure plate 5. Sliding grooves 7 are symmetrically formed on the support base 1. A rotating mechanism 8 is set between the two sliding grooves 7. By designing a rotating mechanism 8 between the two sliding grooves 7, the rotating mechanism 8 can drive the ball valve core placed on the raised step 2 to rotate around the central hole of the ball valve core under the action of the universal balls 4 and the pressure roller 6 on the pressure plate 5. With the grinding of an external grinding device, the ball valve core can be reciprocated and cyclically ground without the need for personnel to change the grinding area, thus improving the grinding efficiency.

[0025] refer to Figure 1 and Figure 2 The rotating mechanism 8 includes a connecting rod 81 disposed between two sliding grooves 7. A rotating wheel 82 is fixedly sleeved on the surface of the connecting rod 81. A drive motor 83 is bolted to one end of the bracket 9. By setting the connecting rod 81, the rotating wheel 82 and the drive motor 83, when the drive motor 83 is started, it can drive the connecting rod 81 to rotate. The rotation of the connecting rod 81 can drive the rotating wheel 82 to rotate. When the ball valve core is on the raised step 2 of the support seat 1, the rotating wheel 82 contacts the surface of the ball valve core. The rotation of the rotating wheel 82 drives the ball valve core to rotate under the action of the universal ball 4.

[0026] refer to Figure 1 Both ends of the pressure plate 5 are provided with limit bolts 11. One end of the limit bolt 11 extends through to the bottom of the pressure plate 5 and is threaded to the top of the support base 1. By setting the limit bolt 11, it is convenient to fix the pressure plate 5 on the support base 1, so that the pressure roller 6 on the pressure plate 5 is in close contact with the central hole wall of the ball valve core.

[0027] refer to Figure 1 The bottom of the support base 1 is symmetrically fixedly connected with a fixing base 12, and the surface of the fixing base 12 is provided with fixing holes. By setting the fixing base 12, it is convenient to support and fix the support base 1.

[0028] refer to Figure 1 , Figure 2 , Figure 3 and Figure 5 The support base 1 is made of stainless steel. By setting the material of the support base 1 to stainless steel, the wear resistance and corrosion resistance of the support base 1 are improved.

[0029] Brief description of the usage process: When the ball valve core is placed on the raised step 2, the surface of the ball valve core contacts the universal ball 4, pressing the pressure plate 5 onto the center hole of the ball valve core. The pressure roller 6 contacts and presses against the inner wall of the center of the ball valve core. When the drive motor 83 is started, it can drive the connecting rod 81 to rotate. The rotation of the connecting rod 81 can drive the rotating wheel 82 to rotate. The rotating wheel 82 contacts the surface of the ball valve core. The rotation of the rotating wheel 82 drives the ball valve core to rotate under the action of the universal ball 4 and the pressure roller 6. This allows the ball valve core to rotate around the center hole. With the grinding of the external grinding device, the ball valve core can be reciprocated and cyclically ground without the need for personnel to change the grinding area, thus improving the grinding efficiency.

[0030] Example 2: refer to Figure 1 , Figure 2 and Figure 5 An adjustable positioning and clamping device for high-precision grinding of ball valve cores includes a support base 1. A raised step 2 is fixedly connected to the top of the support base 1. Universal grooves 3 are equidistantly circumferentially formed on the top of the raised step 2. Universal balls 4 are slidably connected inside the universal grooves 3. A pressure plate 5 is set on the top of the support base 1. A pressure wheel 6 is rotatably connected to the pressure plate 5. Sliding grooves 7 are symmetrically formed on the support base 1. A rotating mechanism 8 is set between the two sliding grooves 7. A bracket 9 is set inside the sliding groove 7. Hydraulic cylinders 10 are symmetrically assembled at the bottom of the support base 1. The output end of the hydraulic cylinder 10 passes through the interior of the sliding groove 7 and is fixedly connected to the bracket 9. By designing the bracket 9 inside the sliding groove 7 and the hydraulic cylinder 10 installed at the bottom of the support base 1, the hydraulic cylinder 10 can adjust the height of the bracket 9. The height of the adjustable mechanism installed between the two brackets 9 can be adjusted. When ball valve cores of different diameters are placed on the raised step 2, the height of the rotating mechanism 8 can be adjusted to drive the rotation of ball valve cores of different sizes, thus improving applicability.

[0031] refer to Figure 2 The bracket 9 is equipped with a sliding guide block 13, and the sliding groove 7 is provided with a sliding guide groove 14 that is slidably connected to the sliding guide block 13. By setting the sliding guide block 13 and the sliding guide groove 14, the bracket 9 can be slidably limited when it moves up and down inside the sliding groove 7.

[0032] refer to Figure 1 and Figure 2 Both brackets 9 are rotatably connected to the connecting rod 81, and the drive motor 83 is fixedly connected to the bracket 9. By setting both brackets 9 to be rotatably connected to the connecting rod 81 and the drive motor 83 to be fixedly connected to the bracket 9, it is convenient to fix the connecting rod 81 and the drive motor 83 on the bracket 9, so that the connecting rod 81 can change with the height of the bracket 9.

[0033] Brief description of the usage process: Two hydraulic cylinders 10 installed at the bottom of the support base 1 can work synchronously under the action of an external synchronous solenoid valve or speed control valve. The hydraulic cylinders 10 can adjust the height of the bracket 9, thereby adjusting the height of the connecting rod 81 installed between the two brackets 9, which in turn drives the rotating wheel 82 to adjust its height. When ball valve cores of different diameters are placed on the raised step 2, the height of the rotating wheel 82 can be adjusted to contact the surface of ball valve cores of different sizes, so that it can be used to drive the rotation of ball valve cores of different sizes, thus improving applicability.

[0034] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0035] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. An adjustable positioning and clamping device for high-precision grinding of a ball valve trim, comprising a support seat (1), characterized in that: The top of the support base (1) is fixedly connected to a raised step (2), and the top of the raised step (2) is provided with equidistant circumferential grooves (3). Universal ball (4) is slidably connected inside the universal groove (3). The top of the support base (1) is provided with a pressure plate (5), and a pressure wheel (6) is rotatably connected to the pressure plate (5). The support base (1) is symmetrically provided with sliding grooves (7), and a rotating mechanism (8) is provided between the two sliding grooves (7). A bracket (9) is provided inside the sliding groove (7). Hydraulic cylinders (10) are symmetrically assembled at the bottom of the support base (1). The output end of the hydraulic cylinder (10) passes through the interior of the sliding groove (7) and is fixedly connected to the bracket (9).

2. The adjustable positioning and clamping device for high-precision grinding of ball valve cores according to claim 1, characterized in that: The rotating mechanism (8) includes a connecting rod (81) disposed between two sliding grooves (7), a rotating wheel (82) is fixedly sleeved on the surface of the connecting rod (81), and a drive motor (83) is bolted to one end of the bracket (9).

3. The adjustable positioning and clamping device for high-precision grinding of a ball valve core according to claim 1, characterized in that: Both ends of the pressure plate (5) are provided with limit bolts (11), one end of the limit bolt (11) extends through to the bottom of the pressure plate (5) and is threadedly connected to the top of the support base (1).

4. The adjustable positioning and clamping device for high-precision grinding of ball valve cores according to claim 1, characterized in that: The bottom of the support base (1) is symmetrically fixedly connected to a fixing base (12), and the surface of the fixing base (12) is provided with fixing holes.

5. The adjustable positioning and clamping device for high-precision grinding of ball valve cores according to claim 1, characterized in that: The bracket (9) is equipped with a sliding guide block (13), and the sliding groove (7) has a sliding guide groove (14) that is slidably connected to the sliding guide block (13).

6. The adjustable positioning and clamping device for high-precision grinding of ball valve cores according to claim 2, characterized in that: Both brackets (9) are rotatably connected to the connecting rod (81), and the drive motor (83) is fixedly connected to the bracket (9).

7. The adjustable positioning and clamping device for high-precision grinding of ball valve cores according to claim 1, characterized in that: The support base (1) is made of stainless steel.

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