Valve ball and valve seat grinding machine

Abstract

The utility model discloses a valve ball and valve seat grinding machine which comprises a workbench, an automatic grinding mechanism and a grinding track driving mechanism. A ceiling frame is arranged on the rear side of the workbench, a hydraulic cylinder is arranged on the front side of the upper end of the ceiling frame, and an oil inlet of the hydraulic cylinder is externally connected with an external oil pump; the automatic grinding mechanism comprises a transverse U-shaped frame, a first rotating seat, a second rotating seat, a fillet rod, a grinding electric appliance mounting plate, a rotating disc, a rotating groove and a hollow rotating ball, the transverse U-shaped frame is fixedly connected to the telescopic end of the hydraulic cylinder, the first rotating seat is fixedly connected to the middle of the upper side wall of the transverse U-shaped frame, and the second rotating seat is rotatably connected to the interior of the first rotating seat; the interior of the second rotating seat is rotationally connected with a fillet rod, the lower end of the fillet rod is fixedly connected with a grinding electric appliance mounting plate, the lower side wall of the transverse U-shaped frame is rotationally connected with a rotating disc through a slewing bearing, the valve ball and valve seat grinding machine can achieve automatic valve seat grinding, and meanwhile the valve seat grinding precision is high.

Description

Technical Field

[0001] This utility model relates to the field of ball valve manufacturing technology, specifically a ball valve seat grinding machine. Background Technology

[0002] A ball valve is a valve in which the opening and closing element is driven by the valve stem and rotates around the ball valve axis. Grinding the valve ball and valve seat is a key operation to ensure the valve's sealing performance.

[0003] For ball valve seats, a specialized grinding rod is typically used. The grinding rod is held manually, perpendicular to the sealing surface of the valve seat, and then rotated for grinding with appropriate pressure and a uniform speed. The grinding trajectory is generally a figure-eight or spiral pattern, with the curved surface and outer surface of the valve seat being manually ground.

[0004] The above-mentioned manual grinding method has some problems in actual operation. For example, the manual grinding method requires real-time manual operation of the grinding machine for position adjustment, has poor automation, and low grinding accuracy. To address this, we propose a valve ball and valve seat grinding machine. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a valve ball seat grinding machine that eliminates the need for manual hand-held grinding of the valve seat arc surface, enabling automated grinding of the valve seat, while also achieving high valve seat grinding precision, effectively solving the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a valve ball seat grinding machine, comprising a worktable, an automatic grinding mechanism, and a grinding trajectory drive mechanism;

[0007] Workbench: A ceiling frame is provided on its rear side, and a hydraulic cylinder is provided on the front side of the upper end of the ceiling frame. The oil inlet of the hydraulic cylinder is connected to an external oil pump.

[0008] Automatic grinding mechanism: It includes a transverse U-shaped frame, a first rotating seat, a second rotating seat, a rounded rod, a grinding electrical mounting plate, a turntable, a rotating groove, and a hollow rotating ball. The transverse U-shaped frame is fixedly connected to the telescopic end of the hydraulic cylinder. The first rotating seat is fixedly connected to the middle of the upper side wall of the transverse U-shaped frame. The second rotating seat is rotatably connected inside the first rotating seat. The rounded rod is rotatably connected inside the second rotating seat. The lower end of the rounded rod is fixedly connected to the grinding electrical mounting plate. The turntable is rotatably connected to the lower side wall of the transverse U-shaped frame through a slewing bearing. A rotating groove is opened on the front side of the upper surface of the turntable. A hollow rotating ball is rotatably connected inside the rotating groove. The inner surface of the hollow rotating ball is slidably connected to the outer surface of the rounded rod.

[0009] Grinding trajectory drive mechanism: It is set inside the transverse U-shaped frame and can realize automated grinding of valve seats, while the grinding accuracy of valve seats is high.

[0010] Furthermore, a microcontroller is installed on the right side of the workbench. The input terminal of the microcontroller is electrically connected to an external power source to control the operation of various electrical appliances.

[0011] Furthermore, the automatic grinding mechanism also includes a grinding motor, which is disposed on the lower surface of the grinding electrical mounting plate. The output shaft of the grinding motor is fixedly connected to a grinding rod, and the input end of the grinding motor is electrically connected to the output end of a microcontroller to realize the function of motor grinding.

[0012] Furthermore, the grinding trajectory driving mechanism includes a position adjustment motor, a first gear, and a second gear. The position adjustment motor is located on the lower side of the rear wall of the transverse U-shaped frame. The output shaft of the position adjustment motor is fixedly connected to the first gear, and the upper surface of the turntable is fixedly connected to the second gear. The first gear and the second gear are meshed together. The input end of the position adjustment motor is electrically connected to the output end of the microcontroller to provide power for the grinding trajectory adjustment.

[0013] Furthermore, evenly distributed inclined plates are fixedly connected between the left and right inner walls of the workbench, and a slag drawer is placed at the lower end of the workbench to collect grinding debris.

[0014] Furthermore, valve seat clamps are fixedly connected between the left and right inner walls of the workbench to achieve the function of clamping the valve seat.

[0015] Furthermore, a protective plate is fixedly connected to the upper surface of the workbench to prevent grinding debris from splashing onto the outside of the machine.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This ball valve seat grinding machine has the following advantages:

[0017] This valve ball seat grinding machine restricts the movement trajectory of the grinding rod by using a rotating groove and hollow ball to limit the position of the rounded rod. This allows the rotating grinding rod to rotate around a turntable, and the height of the grinding rod is adjusted in real time by a hydraulic cylinder. This allows for real-time grinding of the inner and outer arc surfaces of the valve seat, eliminating the need for manual hand-held grinding and enabling automated grinding of the valve seat with high precision. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 3 This is an enlarged structural diagram of point A in this utility model;

[0021] Figure 4 This is a schematic diagram of the hollow rotating bead structure of this utility model.

[0022] In the diagram: 1. Workbench, 2. Ceiling frame, 3. Hydraulic cylinder, 4. Automatic grinding mechanism, 41. Horizontal U-shaped frame, 42. First rotary table, 43. Second rotary table, 44. Rounded corner rod, 45. Grinding electrical mounting plate, 46. Grinding motor, 47. Turntable, 48. Rotary groove, 49. Hollow ball bearing, 5. Grinding trajectory drive mechanism, 51. Position adjustment motor, 52. First gear, 53. Second gear, 6. Inclined plate, 7. Slag drawer, 8. Microcontroller, 9. Valve seat clamp. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-4 This embodiment provides a technical solution: a ball valve seat grinding machine, including a worktable 1, an automatic grinding mechanism 4 and a grinding trajectory driving mechanism 5;

[0025] Workbench 1: A ceiling frame 2 is provided on its rear side. A hydraulic cylinder 3 is provided on the upper front side of the ceiling frame 2. The oil inlet of the hydraulic cylinder 3 is connected to an external oil pump. A microcontroller 8 is provided on the right side of the workbench 1. The input end of the microcontroller 8 is electrically connected to an external power source. An evenly distributed inclined plate 6 is fixedly connected between the left and right inner walls of the workbench 1. A slag drawer 7 is placed at the lower end of the workbench 1. A valve seat clamp 9 is fixedly connected between the left and right inner walls of the workbench 1. A protective plate is fixedly connected to the upper surface of the workbench 1. When the grinding machine is needed, the two L-shaped plates are fixedly positioned according to the specifications of the valve seat of the valve ball. The valve seat of the valve ball can then be manually lifted. At this time, the valve seat clamp 9 is manually operated to fix the valve seat inside the valve seat clamp 9. After the valve seat clamp 9 is fixed tightly to the valve seat, the center of the valve seat clamp 9 corresponds vertically to the center axis of the telescopic end of the hydraulic cylinder 3.

[0026] Automatic grinding mechanism 4: It includes a transverse U-shaped frame 41, a first rotating seat 42, a second rotating seat 43, a rounded rod 44, a grinding electrical mounting plate 45, a turntable 47, a rotating groove 48, and a hollow rotating ball 49. The transverse U-shaped frame 41 is fixedly connected to the telescopic end of the hydraulic cylinder 3. The first rotating seat 42 is fixedly connected to the middle of the upper side wall of the transverse U-shaped frame 41. The second rotating seat 43 is rotatably connected inside the first rotating seat 42. The rounded rod 44 is rotatably connected inside the second rotating seat 43. The lower end of the rounded rod 44 is fixedly connected to the grinding electrical mounting plate 45. The lower side wall of the transverse U-shaped frame 41... A turntable 47 is rotatably connected via a slewing bearing (QN-315-20 type slewing bearing is recommended). The central axis of the telescopic end of the hydraulic cylinder 3 corresponds vertically to the central axis of the turntable 47. At this time, the middle of the clamped valve seat corresponds longitudinally to the middle of the turntable 47. A groove 48 is provided on the front side of the upper surface of the turntable 47. A hollow ball 49 is rotatably connected inside the groove 48. The inner surface of the hollow ball 49 is slidably connected to the outer surface of the rounded rod 44. The automatic grinding mechanism 4 also includes a grinding motor 46. 6 is located on the lower surface of the grinding electrical mounting plate 45. The output shaft of the grinding motor 46 is fixedly connected to the grinding rod. The input end of the grinding motor 46 is electrically connected to the output end of the microcontroller 8. The transverse U-shaped frame 41 is spliced ​​from two L-shaped plates. The middle part of the spliced ​​two L-shaped plates is fixedly connected by bolts. The height of the transverse U-shaped frame 41 can be adjusted by disassembling and assembling the spliced ​​position of the two L-shaped plates. At this time, the microcontroller 8 can be controlled to operate the grinding motor 46. The output shaft of the grinding motor 46 rotates, thereby driving the grinding rod to rotate at high speed, which in turn drives the hollow ball bearing 49 to rotate. The groove 48 rotates in real time, and the first rotating seat 42, the second rotating seat 43 and the rounded corner rod 44 rotate adaptively at the same time. At this time, the grinding electrical mounting plate 45 can be driven to rotate around the central axis of the turntable 47. At this time, the external oil pump and hydraulic cylinder 3 can be controlled to operate. The extension end of the hydraulic cylinder 3 adjusts the height position in real time, thereby driving the rotating grinding rod to rotate around the central axis of the turntable 47 while adjusting its own height. The inner arc surface of the valve seat is ground in real time, and the iron powder generated by grinding will fall into the slag collection tray 7 along with the inclined plate 6.

[0027] Grinding trajectory drive mechanism 5: It is set inside the transverse U-shaped frame 41. The grinding trajectory drive mechanism 5 includes a position adjustment motor 51, a first gear 52 and a second gear 53. The position adjustment motor 51 is set on the lower side of the rear wall of the transverse U-shaped frame 41. The output shaft of the position adjustment motor 51 is fixedly connected to the first gear 52, and the upper surface of the turntable 47 is fixedly connected to the second gear 53. The first gear 52 and the second gear 53 are meshed. The input end of the position adjustment motor 51 is electrically connected to the output end of the microcontroller 8, so the microcontroller 8 can be controlled at the same time. The position adjustment motor 51 operates, and the output shaft of the position adjustment motor 51 rotates, thereby driving the first gear 52 to rotate, and then driving the turntable 47 to rotate through the second gear 53.

[0028] The working principle of the valve ball and valve seat grinding machine provided by this utility model is as follows: When the grinding machine is needed, adjust the fixed positions of the two L-shaped plates according to the specifications of the valve ball and valve seat, and then manually pick up the valve ball and valve seat. At this time, manually operate the valve seat clamp 9 to fix the valve seat inside the valve seat clamp 9. Then, control the microcontroller 8 to operate the grinding motor 46. The output shaft of the grinding motor 46 rotates, thereby driving the grinding rod to rotate at high speed. At the same time, control the microcontroller 8 to operate the position adjustment motor 51. The output shaft of the position adjustment motor 51 rotates, thereby driving the first gear 52 to rotate, and then through the second gear... 53 drives the turntable 47 to rotate, which in turn drives the hollow ball bearing 49 to rotate in real time within the rotating groove 48. At the same time, the first rotating seat 42, the second rotating seat 43, and the rounded corner rod 44 rotate adaptively. This drives the grinding electrical mounting plate 45 to rotate around the central axis of the turntable 47. At this time, the external oil pump and hydraulic cylinder 3 can be controlled to operate. The extension and retraction end of the hydraulic cylinder 3 adjusts its height position in real time, thereby driving the rotating grinding rod to rotate around the central axis of the turntable 47 while adjusting its height itself. This grinds the inner arc surface of the valve seat in real time, and the iron powder generated by grinding falls into the slag collection tray 7 along with the inclined plate 6.

[0029] It is worth noting that the microcontroller 8 disclosed in the above embodiments is specifically model S7-200. The hydraulic cylinder 3, grinding motor 46, position adjustment motor 51, and valve seat clamp 9 can be freely configured according to the actual application scenario. It is recommended that the hydraulic cylinder 3 be a HO series hydraulic cylinder, the grinding motor 46 be a 42mm-PLE series planetary geared brushless motor, the position adjustment motor 51 be a 4i k25GN-CF / 4GN32K model geared motor, and the valve seat clamp 9 be a 3DAKT-05 model adjustable high-strength three-jaw chuck. The microcontroller 8 controls the operation of the hydraulic cylinder 3, grinding motor 46, and position adjustment motor 51 using methods commonly used in the prior art.

[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A ball valve seat grinding machine, characterized in that: It includes a worktable (1), an automatic grinding mechanism (4), and a grinding trajectory drive mechanism (5); Workbench (1): A ceiling frame (2) is provided on its rear side. A hydraulic cylinder (3) is provided on the front side of the upper end of the ceiling frame (2). An external oil pump is connected to the oil inlet of the hydraulic cylinder (3). Automatic grinding mechanism (4): It includes a transverse U-shaped frame (41), a first rotating seat (42), a second rotating seat (43), a rounded corner rod (44), a grinding electrical mounting plate (45), a turntable (47), a rotating groove (48), and a hollow rotating ball (49). The transverse U-shaped frame (41) is fixedly connected to the telescopic end of the hydraulic cylinder (3). The first rotating seat (42) is fixedly connected to the middle of the upper side wall of the transverse U-shaped frame (41). The second rotating seat (43) is rotatably connected inside the first rotating seat (42). 43), the second rotating seat (43) is rotatably connected to a rounded rod (44), the lower end of the rounded rod (44) is fixedly connected to a grinding electrical mounting plate (45), the lower side wall of the transverse U-shaped frame (41) is rotatably connected to a turntable (47) through a slewing bearing, the front side of the upper surface of the turntable (47) is provided with a rotating groove (48), the interior of the rotating groove (48) is rotatably connected to a hollow ball (49), the inner surface of the hollow ball (49) is slidably connected to the outer surface of the rounded rod (44); Grinding trajectory drive mechanism (5): It is located inside the transverse U-shaped frame (41).

2. The valve ball seat grinding machine according to claim 1, characterized in that: A microcontroller (8) is provided on the right side of the workbench (1), and the input terminal of the microcontroller (8) is electrically connected to an external power supply.

3. A ball valve seat grinding machine according to claim 2, characterized in that: The automatic grinding mechanism (4) also includes a grinding motor (46), which is located on the lower surface of the grinding electrical mounting plate (45). The output shaft of the grinding motor (46) is fixedly connected to a grinding rod, and the input end of the grinding motor (46) is electrically connected to the output end of the microcontroller (8).

4. A ball valve seat grinding machine according to claim 2, characterized in that: The grinding trajectory driving mechanism (5) includes a position adjustment motor (51), a first gear (52) and a second gear (53). The position adjustment motor (51) is located on the lower side of the rear wall of the transverse U-shaped frame (41). The output shaft of the position adjustment motor (51) is fixedly connected to the first gear (52), and the upper surface of the turntable (47) is fixedly connected to the second gear (53). The first gear (52) and the second gear (53) are meshed and connected. The input end of the position adjustment motor (51) is electrically connected to the output end of the microcontroller (8).

5. A ball valve seat grinding machine according to claim 1, characterized in that: The workbench (1) is fixedly connected to the left and right inner walls with evenly distributed inclined plates (6), and a slag drawer (7) is placed at the lower end of the workbench (1).

6. A ball valve seat grinding machine according to claim 1, characterized in that: A valve seat clamp (9) is fixedly connected between the left and right inner walls of the workbench (1).

7. A ball valve seat grinding machine according to claim 1, characterized in that: A protective plate is fixedly connected to the upper surface of the workbench (1).

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