Hard sealing valve clack grinding tool for semi-ball valve and rotary ball valve

Abstract

The invention relates to the technical field of valve machining, in particular to a hard sealing valve clack grinding tool for a semi-ball valve and a rotary ball valve. Comprising a platform frame, a grinding tool device, a grinding tool power device, a workpiece power device and an auxiliary device. The platform frame is fixed on the base plate; the grinding tool device is located on the upper side of the platform frame, the grinding tool power device is located on the upper side of the grinding tool device, the workpiece power device is located on the lower side of a platform of the platform frame, and the auxiliary device is located beside the platform frame. The workpiece power device comprises a main gear motor fixed to the lower side face of a platform of the platform frame, a motor shaft of the main gear motor penetrates through the platform face of the platform frame, a tool positioning disc is fixedly connected to the motor shaft, the grinding tool power device comprises a right-angle elbow stand column fixed to the side face of the platform frame, and a small gear motor is fixed to the lower side of an elbow part. A rocker arm is fixed on a small gear motor shaft and sleeved with a ball arm. The grinding tool device comprises a grinding tool ring, and a cylinder is fixed to the upper side of the grinding tool ring through a connecting rod. The lower side of the grinding tool circular ring inner hole is a customized concave spherical surface.

Description

Technical Field

[0001] This invention relates to the field of valve processing, and more particularly to a grinding fixture for hard-seal valve discs of hemispherical valves and rotary ball valves. Background Technology

[0002] Currently, in the processing of large hard-seal hemispherical valves and rotary ball valves, grinding the spherical surface is a very difficult process. Hard sealing means that the valve disc and the valve body metal are directly sealed without a sealing ring, so the precision requirements for valve disc processing are very high.

[0003] Currently, most grinding processes are performed manually, which is slow and lacks precision. This invention provides an automated grinding fixture that can significantly improve processing accuracy and increase production efficiency. Summary of the Invention

[0004] The main objective of this invention is to provide a grinding fixture for the valve disc of a hard-seal valve, such as a ball valve or a rotary ball valve, so as to effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a grinding fixture for hard-seal valve discs of hemispherical valves and rotary ball valves, comprising a platform frame, a grinding device, a grinding power device, a workpiece power device, and an auxiliary device; the platform frame is fixed on a base plate; the grinding device is located on the upper side of the platform frame, the grinding power device is located on the upper side of the grinding device, the workpiece power device is located on the lower side of the platform frame, and the auxiliary device is located next to the platform frame.

[0006] Preferably, the workpiece power device includes a main geared motor fixed to the lower side of the platform frame, the motor shaft of the main geared motor passes through the platform frame surface, and a tooling positioning plate is fixedly connected to the motor shaft. Several evenly distributed support blocks are fixed on the edge of the tooling positioning plate, and bolt holes are provided on the support blocks.

[0007] Preferably, the grinding wheel power unit includes a right-angle elbow column fixed on the base plate and the side of the platform frame, with the elbow located on the upper side of the platform frame and a small reduction motor fixed on the lower side of the elbow.

[0008] Preferably, the small geared motor shaft is concentric with the tooling positioning plate, and a rocker arm is fixed on the small geared motor shaft. A ball-head arm with a ball head at the lower end is slidably fitted on the rocker arm and fixed to the rocker arm with fastening bolts.

[0009] Preferably, the grinding tool device includes a grinding tool ring customized according to the workpiece, and two symmetrical connecting rods are bolted to the upper side of the grinding tool ring. The two connecting rods are inclined towards the center and welded to the outside of a cylinder.

[0010] Preferably, the ball head of the ball head arm is inserted into the inner hole of the cylinder of the grinding tool when machining the workpiece.

[0011] Preferably, the lower side of the inner hole of the grinding wheel ring is a recessed spherical surface customized according to the workpiece.

[0012] Preferably, the top surface of the grinding wheel ring is provided with two symmetrical ring bolts.

[0013] Preferably, the auxiliary device includes two round rods symmetrically arranged on the side of the platform frame, with the lower ends of the round rods fixed to the base plate, and a rope fixed to each of the two round rods.

[0014] The beneficial effects of this invention are: automatic grinding can significantly improve processing accuracy, increase production efficiency, and reduce labor costs. Attached Figure Description

[0015] Appendix Figure 1 This is a three-dimensional structural diagram of the present invention after the removal of the abrasive tool.

[0016] Appendix Figure 2 This is a three-dimensional structural diagram of the present invention.

[0017] Appendix Figure 3 This is a three-dimensional structural diagram of the workpiece during processing according to the present invention.

[0018] Appendix Figure 4 This is a schematic diagram of the three-dimensional structure of the workpiece to be processed according to the present invention.

[0019] Appendix Figure 1-4 In the middle, there are: 1. Base plate; 2. Platform frame; 3. Support block; 4. Tooling positioning plate; 5. Ball head arm; 6. Rocker arm; 7. Right angle elbow column; 8. Small geared motor; 9. Round rod; 10. Rope; 11. Main geared motor; 12. Motor shaft; 13. Cylinder; 14. Connecting rod; 15. Bolt with ring; 16. Grinding ring; 17. Bolt; 18. Workpiece; 19. Workpiece fixing bolt; 20. Fastening bolt. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] Appendix Figure 1-4 As shown, a hard-seal valve disc grinding fixture for a hemispherical valve and a rotary ball valve includes a platform frame 2, a grinding tool device, a grinding tool power device, a workpiece power device, and an auxiliary device; the platform frame 2 is fixed on the base plate 1; the grinding tool device is located on the upper side of the platform frame 2, the grinding tool power device is located on the upper side of the grinding tool device, the workpiece power device is located on the lower side of the platform frame 2, and the auxiliary device is located next to the platform frame 2.

[0022] The workpiece power device includes a main geared motor 11 fixed on the lower side of the platform frame 2. The motor shaft 12 of the main geared motor 11 passes through the platform frame 2, and a tooling positioning plate 4 is fixedly connected to the motor shaft 12. Several evenly distributed support blocks 3 are fixed on the edge of the tooling positioning plate 4, and bolt holes are provided on the support blocks 3.

[0023] The grinding wheel power unit includes a right-angle elbow column 7 fixed on the base plate 1 and the side of the platform frame 2. The elbow part is located on the upper side of the platform frame 2, and a small reduction motor 8 is fixed on the lower side of the elbow part.

[0024] The small geared motor 8 shaft is concentric with the tooling positioning plate 4, and a rocker arm 6 is fixed on the small geared motor 8 shaft. A ball head arm 5 with a ball head at the lower end is slidably mounted on the rocker arm 6 and fixed to the rocker arm 6 with fastening bolts 20.

[0025] The grinding device includes a grinding ring 16 customized according to the workpiece. Two symmetrical connecting rods 14 are fixed to the upper side of the grinding ring 16 with bolts 17. The two connecting rods 14 are inclined towards the center and welded to the outside of a cylinder 13.

[0026] During processing, the ball head of the ball head arm 5 is inserted into the inner hole of the cylinder 13 of the grinding device.

[0027] The lower side of the inner hole of the abrasive ring 16 is a recessed spherical surface customized according to the workpiece.

[0028] The top surface of the abrasive ring 16 is provided with two symmetrical ring bolts 15.

[0029] The auxiliary device includes two round rods 9 symmetrically arranged on the side of the platform frame 2. The lower ends of the round rods 9 are fixed to the base plate 1, and a rope 10 is fixed to each of the two round rods 9.

[0030] During processing, the workpiece 18 is placed face up on the tooling positioning plate 4 and fixed to the support block 3 with the workpiece fixing bolt 19. The ball head of the ball arm 5 is inserted into the inner hole of the cylinder 13 of the grinding device. The eccentricity of the ball arm 5 is adjusted to a suitable value. The other ends of the two ropes 10 in the auxiliary device are respectively tied with the ring bolts 15 to ensure the safety of the workpiece 18. The small reduction motor 8 and the main reduction motor 11 are started. Grinding paste is applied between the grinding ring 16 and the workpiece 18. The ball arm 5 drives the grinding ring 16 to make a circular swaying motion. At the same time, the workpiece 18 is rotated under the drive of the main reduction motor 11. Friction is generated between the concave spherical surface on the lower side of the inner hole of the grinding ring 16 and the workpiece 18. Gradually, the outer surface of the workpiece 18 is completely pressed against the concave spherical surface of the grinding ring 16 to achieve the grinding purpose.

[0031] Beneficial effects: Automatic grinding can significantly improve processing accuracy, increase production efficiency, and reduce labor costs.

[0032] 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 tooling for grinding the valve disc of a hard-seal valve, such as a hemispherical valve or a rotary ball valve, characterized in that: It includes platform frame, grinding tool device, grinding tool power device, workpiece power device, auxiliary device; platform frame is fixed on base plate; grinding tool device is located on the upper side of platform frame, grinding tool power device is located on the upper side of grinding tool device, workpiece power device is located on the lower side of platform of platform frame, auxiliary device is located beside platform frame.

2. The hard sealing valve disc grinding tool for semi-spherical valve and rotary ball valve according to claim 1, characterized in that: The workpiece power device includes a main speed reducer motor fixed on the lower side of the platform of the platform frame, the motor shaft of the main speed reducer motor penetrates the platform frame table, and a tool positioning disc is fixedly connected on the motor shaft, a plurality of support blocks uniformly distributed are fixed on the edge of the tool positioning disc, and bolt holes are arranged on the support blocks.

3. The grinding fixture for the valve disc of a hard-seal valve or a rotary ball valve according to claim 1, characterized in that: The grinding tool power device includes a straight elbow stand fixed on the base plate and the side of the platform frame, the elbow part is located on the upper side of the platform frame, and a small speed reducer motor is fixed on the lower side of the elbow part.

4. The hard sealing valve disc grinding tool for semi-ball valve and rotary ball valve according to claim 3, characterized in that: The small speed reducer motor shaft is concentric with the tool positioning disc, and a rocker arm is fixed on the small speed reducer motor shaft.

5. The grinding fixture for the valve disc of a hard-seal valve, such as a hemispherical valve or a rotary ball valve, according to claim 1, is characterized in that: A ball head arm with a ball head at the lower end is slidably sleeved on the rocker arm and is fixed with the rocker arm by a fastening bolt.

6. The hard sealing valve disc grinding tool for semi-spherical valve and rotary ball valve as claimed in claim 4 or 5, characterized in that: The grinding tool device includes a grinding tool ring customized according to the workpiece, two symmetrical connecting rods are fixed on the upper side of the grinding tool ring by bolts, and the two connecting rods are inclined to the center and are welded and fixed on the outer side of a cylinder.

7. The hard sealing valve disc grinding tool for use in globe valves and rotary ball valves as claimed in claim 5, characterized in that: The ball head of the ball head arm is inserted into the inner hole of the cylinder of the grinding tool device when the workpiece is processed.

8. The hard sealing valve disc grinding tool for semi-sphere valve and rotary ball valve as claimed in claim 5, wherein: The lower side of the inner hole of the grinding tool ring is a recessed spherical surface customized according to the workpiece.

9. The hard sealing valve disc grinding tool for semi-sphere valve and rotary ball valve as claimed in claim 1, wherein: Two symmetrical ring bolts are arranged on the top surface of the grinding tool ring. The auxiliary device includes two circular rods symmetrically arranged on the side of the platform frame, the lower end of the circular rod is fixed on the base plate, and a rope is fixed on each of the two circular rods.

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