Grinding device for valve clack of safety valve

Abstract

The utility model relates to the technical field of valves, in particular to a safety valve clack grinding device which comprises a base, a three-jaw chuck installed on the base, a valve installed on the three-jaw chuck, a supporting plate installed on the valve, a positioning ring fixedly connected to the supporting plate, an eccentric grinding machine installed on the positioning ring and a grinding wheel installed on the eccentric grinding machine. A fixing assembly for supporting the eccentric grinding machine is mounted on the valve; the eccentric grinding machine is installed on the valve through the fixing assembly and the supporting plate, the eccentric grinding machine is used for grinding the valve, and due to the fact that the eccentric grinding machine is installed on the valve, even if the valve is vibrated and deviates during grinding, the eccentric grinding machine and the valve deviate synchronously, and the situation that the quality of the valve is affected due to the fact that the valve is subjected to eccentric grinding during grinding is avoided.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a safety valve disc grinding device. Background Technology

[0002] Safety valves are automatic valves. When the pressure inside the equipment exceeds the allowable value, they can discharge fluid from the system using only the force of the medium itself without any external force, playing a vital role in protecting personal safety and equipment operation. Safety valve sealing surface repair is divided into sandpaper grinding and polishing with grinding paste, depending on the degree of fine grinding. To improve the quality and efficiency of safety valve sealing surface repair and enhance the sealing performance after grinding, safety valve disc grinding mainly relies on automatic grinding tables and a fitter's bench with sandpaper. The grinding operation is divided into rough grinding, fine grinding, and precision grinding. Rough grinding involves the largest amount of material removed, eliminating craters on the valve disc sealing surface. Fine grinding involves a smaller amount of material removed, mainly ensuring the valve disc does not wear unevenly. Precision grinding involves the smallest amount of material removed and is the polishing step, playing a decisive role in the overall sealing quality of the sealing surface.

[0003] Observing the calibration steps of the safety valve calibration personnel, it was found that during the above operation process, when the workpiece is rotated from a static position to the grinding position, it will be pushed forward. This action cannot be avoided in manual grinding, which will cause uneven wear of the safety valve disc and reduce the quality of the safety valve. Utility Model Content

[0004] The purpose of this invention is to provide a safety valve disc grinding device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a safety valve disc grinding device, comprising a base, a three-jaw chuck mounted on the base, a valve mounted on the three-jaw chuck, and further comprising:

[0006] A support plate is installed on the valve. A positioning ring is fixedly connected to the support plate. An eccentric grinder is installed on the positioning ring. A fixing component for supporting the eccentric grinder is installed on the valve.

[0007] A connecting sleeve is installed on a support plate, and a retaining plate is fixedly connected to the connecting sleeve.

[0008] Preferably, the connecting sleeve has a through groove, and the support plate is inserted into the through groove.

[0009] Preferably, the card plate has grooves that increase its surface friction.

[0010] Preferably, a fixing bolt is threaded into the through groove, and a mounting hole is provided on the support plate.

[0011] Preferably, the fixing component includes a fixing shell fixedly connected to the eccentric grinder, a fixing frame fixedly connected to the fixing shell, a fixing plate fixedly connected to the fixing frame, a fastening bolt threadedly connected to the fixing plate, and a pressure plate threadedly connected to the fastening bolt.

[0012] Preferably, the connecting shaft of the eccentric grinder is rotatably connected to the positioning ring.

[0013] Preferably, the bottom of the base is threaded with a screw, and a rubber pad is fixedly connected to the screw.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention can adjust the levelness of the base to maintain its horizontal state.

[0016] Working principle: The support plate is pressed and fixed onto the valve. Then, the eccentric grinder is installed on the positioning ring. At the same time, the fixing plate and pressure plate are installed on the upper and lower sides of the valve flange, respectively. Then, the fastening bolts are tightened to press and fix the pressure plate onto the valve, thereby fixing the fixing frame onto the valve. The fixing frame and fixing shell support and fix the eccentric grinder, improving the stability of the eccentric grinder during operation. The eccentric grinder is used to grind the valve. Because the eccentric grinder is installed on the valve, even if the valve is vibrated and shifted during grinding, the eccentric grinder shifts synchronously with the valve, avoiding uneven grinding of the valve and affecting the quality of the valve. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the connection structure between the valve and the support plate of this utility model;

[0019] Figure 3 This is a schematic diagram of the connecting sleeve and clamping plate structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the fixing component structure of this utility model.

[0021] In the diagram: 1. Base; 2. Three-jaw chuck; 3. Valve; 4. Support plate; 5. Positioning ring; 6. Eccentric grinder; 7. Connecting sleeve; 8. Clamping plate; 9. Through groove; 10. Fixing bolt; 11. Mounting hole; 12. Fixing component; 121. Fixing shell; 122. Fixing bracket; 123. Fixing plate; 124. Pressure plate; 125. Fastening bolt; 13. Groove; 14. Screw; 15. Rubber pad. Detailed Implementation

[0022] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0023] Please see Figure 1-4 As shown, a safety valve disc grinding device includes a base 1, on which a three-jaw chuck 2 is mounted. The three-jaw chuck 2 is a machine tool accessory that clamps and positions a workpiece by synchronously moving three movable jaws radially. This is existing technology and will not be described in detail here. A valve 3 is mounted on the three-jaw chuck 2 and is fixed in place by the three-jaw chuck 2. The device also includes a support plate 4 mounted on the valve 3. A positioning ring 5 is fixedly connected to the support plate 4. An eccentric grinder 6 is mounted on the positioning ring 5. The eccentric grinder is a surface treatment device that drives a sanding disc / sanding pad to rotate and vibrate through an eccentric shaft or eccentric disc. Its grinding trajectory is an irregular circular motion, which can reduce surface scratches and improve uniformity. This is existing technology and will not be described in detail here. It can be used with an external power supply. A fixing component 12 supporting the eccentric grinder 6 is mounted on the valve 3. A connecting sleeve 7 is mounted on the support plate 4. A clamping plate 8 is fixedly connected to the connecting sleeve 7. The two connecting sleeves 7 are mirror images mounted at both ends of the support plate 4.

[0024] It should be noted that: the support plate 4 is installed on the flange of the valve 3 using the connecting sleeve 7 and the clamping plate 8, and the eccentric grinder 6 is installed on the positioning ring 5 using the fixing component 12. The grinding rod passes through the positioning ring 5 and extends into the inside of the valve 3, driving the grinding wheel to grind the inside of the valve 3.

[0025] The connecting sleeve 7 has a through groove 9, and the support plate 4 is inserted into the through groove 9. The through groove 9 allows the connecting sleeve 7 to move on the support plate 4, which is suitable for safety valves of different sizes. The clamping plate 8 has a groove 13 to increase its surface friction. The groove 13 on the surface of the clamping plate 8 increases the friction when it is connected to the support plate 4, thereby improving the fixing effect of the clamping plate 8 on the support plate 4. A fixing bolt 10 is threaded into the through groove 9. The support plate 4 has a mounting hole 11. After the connecting sleeve 7 is adjusted to a suitable position, the fixing bolt 10 is threaded through the mounting hole 11 and fixed in the connecting sleeve 7, thereby pressing and fixing the support plate 4 onto the valve 3. After the support plate 4 is fixed, the positions of the positioning ring 5 and the eccentric grinder 6 are fixed synchronously. When installing the support plate 4, the positioning ring 5 and the valve 3 need to be positioned according to the grinding requirements required by those in the art.

[0026] The fixing assembly 12 includes a fixing shell 121 fixedly connected to the eccentric grinder 6. The fixing shell 121 is fixedly installed on the top of the eccentric grinder 6. A fixing frame 122 is fixedly connected to the fixing shell 121. The fixing frame 122 is welded to the fixing shell 121. A fixing plate 123 is fixedly connected to the fixing frame 122. The fixing plate 123 is welded to the lower part of the fixing frame 122. A fastening bolt 125 is threadedly connected to the fixing plate 123. A pressure plate 124 is threadedly connected to the fastening bolt 125. The fixing plate 123 and the pressure plate 124 are respectively installed on the upper and lower sides of the flange of the valve 3. Then, the fastening bolt 125 is tightened to press and fix the pressure plate 124 onto the valve 3, thereby fixing the fixing frame 122 onto the valve 3. The fixing frame 122 and the fixing shell 121 are used to support and fix the eccentric grinder 6, improving the stability of the eccentric grinder 6 during operation.

[0027] The connecting shaft of the eccentric grinder 6 is rotatably connected to the positioning ring 5, and the connecting shaft passes through the positioning ring 5 and extends into the valve 3.

[0028] The bottom of the base 1 is threaded with a screw 14, and a rubber pad 15 is fixedly connected to the screw 14. The screw 14 is installed at the four corners of the base 1. The rubber pad 15 can absorb shocks from the base 1. By adjusting the screw 14, the levelness of the base 1 can be adjusted to keep the base 1 in a horizontal state.

[0029] Working principle: When grinding the valve disc of valve 3, the support plate 4 is installed on valve 3, and then the connecting sleeves 7 on both sides are moved towards the positioning ring 5. The clamping plate 8 is clamped onto the flange of valve 3, and the fixing bolts 10 are threaded through the mounting holes 11 and fixed in the connecting sleeves 7, thereby pressing and fixing the support plate 4 onto valve 3. Then, the eccentric grinder 6 is installed on the positioning ring 5, and the fixing plate 123 and the pressure plate 124 are installed on the upper and lower sides of the flange of valve 3 respectively. Finally, the fastening bolts 12 are tightened. 5. Press and fix the pressure plate 124 onto the valve 3, thereby fixing the fixing frame 122 onto the valve 3. The fixing frame 122 and the fixing shell 121 are used to support and fix the eccentric grinder 6, improving the stability of the eccentric grinder 6 during operation. The eccentric grinder 6 is used to grind the valve 3. Since the eccentric grinder 6 is installed on the valve 3, even if the valve 3 is vibrated and shifted during grinding, the eccentric grinder 6 and the valve 3 will shift synchronously, avoiding uneven grinding of the valve 3 during grinding and affecting the quality of the valve 3.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A safety valve disc grinding device, comprising a base (1), a three-jaw chuck (2) mounted on the base (1), and a valve (3) mounted on the three-jaw chuck (2), characterized in that, Also includes: A support plate (4) is installed on the valve (3). A positioning ring (5) is fixedly connected to the support plate (4). An eccentric grinder (6) is installed on the positioning ring (5). A fixing component (12) supporting the eccentric grinder (6) is installed on the valve (3). A connecting sleeve (7) is installed on a support plate (4), and a clamping plate (8) is fixedly connected to the connecting sleeve (7).

2. The safety valve disc grinding device according to claim 1, characterized in that: The connecting sleeve (7) has a through groove (9), and the support plate (4) is inserted into the through groove (9).

3. The safety valve disc grinding device according to claim 1, characterized in that: The card plate (8) has a groove (13) to increase its surface friction.

4. The safety valve disc grinding device according to claim 2, characterized in that: The through groove (9) is threaded with a fixing bolt (10), and the support plate (4) is provided with a mounting hole (11).

5. A safety valve disc grinding device according to claim 1, characterized in that: The fixing component (12) includes a fixing shell (121) fixedly connected to the eccentric grinder (6), a fixing frame (122) fixedly connected to the fixing shell (121), a fixing plate (123) fixedly connected to the fixing frame (122), a fastening bolt (125) threadedly connected to the fixing plate (123), and a pressure plate (124) threadedly connected to the fastening bolt (125).

6. The safety valve disc grinding device according to claim 1, characterized in that: The connecting shaft of the eccentric grinder (6) is rotatably connected to the positioning ring (5).

7. The safety valve disc grinding device according to claim 1, characterized in that: The bottom of the base (1) is threaded with a screw (14), and a rubber pad (15) is fixedly connected to the screw (14).

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