A polishing device for mechanical seal processing

Abstract

This utility model discloses a grinding device for processing mechanical seals, including a collection box, a processing box fixedly connected to the upper end of the collection box, a motor fixedly connected to one outer end of the processing box, a slot opened at the upper end of the processing box, a bidirectional screw rotatably connected inside the slot, the output end of the motor fixedly connected to the bidirectional screw, and two threaded blocks mating on the bidirectional screw. This patent uses a motor to drive a fixed plate to rotate the clamping assembly, completing the double-sided grinding of the seal in one go, eliminating the positioning error of traditional secondary clamping, improving the grinding efficiency of the device, and simultaneously achieving synchronous centering and clamping of the arc-shaped clamping plate by the bidirectional screw, and a cylinder precisely controlling the feed amount of the grinding disc, requiring no manual intervention throughout the process, saving time and effort.

Description

Technical Field

[0001] This utility model relates to the field of mechanical seal grinding technology, and in particular to a grinding device for processing mechanical seals. Background Technology

[0002] Mechanical seals are critical components in rotating machinery (such as pumps and reactors) that prevent fluid leakage. They consist of a stationary ring and a rotating ring. Their core sealing surfaces are two precisely fitted annular end faces (typically made of high-hardness materials such as silicon carbide or hard alloy). Grinding is an essential step in the production of mechanical seals. Unground end faces have microscopic irregularities, leading to poor sealing and fluid leakage. Burrs or uneven end faces exacerbate friction and wear, shortening the seal's lifespan. Smooth end faces reduce frictional torque and lower equipment operating energy consumption.

[0003] Existing grinding devices suffer from poor clamping and positioning accuracy and high damage rate. Traditional clamps (such as three-jaw chucks) directly clamp brittle sealing rings (such as ceramic rings), which can easily lead to edge breakage. Secondly, after grinding one side, the workpiece needs to be manually flipped and repositioned, which will cause errors, resulting in excessive parallelism between the two sides and increasing the risk of seal failure. Furthermore, the local temperature exceeds 300°C during dry grinding, which can cause microcracks or softening of the carbide ring during annealing. Utility Model Content

[0004] The purpose of this invention is to provide a grinding device for processing mechanical seals, which solves the problems of poor clamping and positioning accuracy and high damage rate in existing grinding devices.

[0005] To achieve the above objectives, a grinding device for processing mechanical seals is provided, comprising a collection box, a processing box fixedly connected to the upper end of the collection box, a motor fixedly connected to one outer end of the processing box, a slot opened at the upper end of the processing box, a bidirectional screw rotatably connected inside the slot, the output end of the motor fixedly connected to the bidirectional screw, and two threaded blocks matingly connected to the bidirectional screw.

[0006] The upper and lower ends of the threaded block are fixedly connected to movable frames. The outer end of the movable frame on the left is fixedly connected to a second motor. The output end of the second motor is fixedly connected to a fixed plate. The inside of the movable frame on the right is also rotatably connected to a fixed plate. A sliding groove is opened at the other end of the upper part of the processing box. A slider is fixedly connected to the movable frame and the slider is slidably connected inside the sliding groove.

[0007] According to the grinding device for processing mechanical seals, the two ends of the fixed plate are movably connected to movable rods, and the outer ends of the movable rods are fixedly connected to arc-shaped clamping plates.

[0008] According to the grinding device for processing mechanical seals, a spring is sleeved on the movable rod, one end of the spring is fixedly connected to the connecting plate, and the other end is fixedly connected to the arc-shaped clamping plate.

[0009] According to the grinding device for processing mechanical seals, a mounting bracket is fixedly connected to the upper center of the processing box, and a cylinder is fixedly connected to the inner end of the mounting bracket.

[0010] According to the grinding device for processing mechanical seals, a connecting plate is fixedly connected to the extension end of cylinder one, and a motor three is fixedly connected to the lower end of the connecting plate.

[0011] According to the grinding device for processing mechanical seals, the output end of the motor three is fixedly connected to a grinding disc, and the upper end of the processing box is fixedly connected to a cylinder two.

[0012] According to the grinding device for machining mechanical seals, the extension end of the cylinder two is fixedly connected to a water storage plate through the machining box, a water inlet pipe is provided through the upper end of the water storage plate, and a plurality of cooling nozzles are provided through the inner end of the water storage plate.

[0013] According to the grinding device for processing mechanical seals, a collection cabinet is slidably connected inside the collection box, and a door is provided at the outer end of the processing box.

[0014] The above-mentioned solution has the following beneficial effects:

[0015] 1. This patent uses a motor to drive the fixing plate to rotate the clamping assembly, completing the double-sided grinding of the seal in one go, eliminating the positioning error of traditional secondary clamping, improving the grinding efficiency of the device, and at the same time, the bidirectional screw realizes the synchronous centering and clamping of the arc-shaped clamping plate, and the cylinder precisely controls the feed amount of the grinding disc. No manual intervention is required throughout the process, saving time and effort.

[0016] 2. This patent uses a polyurethane clamping plate and spring structure to eliminate clamping defects and improve the workpiece qualification rate. Secondly, the cylinder pushes the water storage plate for positioning, and the cooling nozzle sprays coolant in a directional manner to avoid the seals from being annealed due to high temperature grinding, thus ensuring the material hardness stability.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1This is a schematic diagram of the overall structure of a grinding device for processing mechanical seals according to the present invention.

[0020] Figure 2 This is a cross-sectional view of a grinding device for processing mechanical seals according to the present invention.

[0021] Figure 3 This is a schematic diagram of the cooling component of a grinding device for machining mechanical seals according to the present invention.

[0022] Figure 4 This is a schematic diagram of the clamping assembly of a grinding device for processing mechanical seals according to the present invention.

[0023] Figure 5 This is a schematic diagram of the grinding component of a grinding device for processing mechanical seals according to this utility model.

[0024] Legend:

[0025] 1. Collection box; 2. Processing box; 3. Motor 1; 4. Movable frame; 5. Mounting frame; 6. Cylinder 1; 7. Water inlet pipe; 8. Box door; 9. Collection cabinet; 10. Slide groove; 11. Slot; 12. Double-acting screw; 13. Threaded block; 14. Motor 2; 15. Arc-shaped clamp; 16. Grinding disc; 17. Slider; 18. Cylinder 2; 19. Water storage plate; 20. Cooling nozzle; 21. Fixed plate; 22. Movable rod; 23. Spring; 24. Connecting plate; 25. Motor 3. Detailed Implementation

[0026] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0027] Reference Figure 1-5 This utility model provides a grinding device for processing mechanical seals, including a collection box 1, a processing box 2 fixedly connected to the upper end of the collection box 1, a motor 3 fixedly connected to one outer end of the processing box 2, a slot 11 opened at the upper end of the processing box 2, a bidirectional screw 12 rotatably connected inside the slot 11, the output end of the motor 3 fixedly connected to the bidirectional screw 12, and two threaded blocks 13 connected to the bidirectional screw 12. Starting the motor 3 can drive the bidirectional screw 12 to rotate, and under the action of the threaded engagement, the two threaded blocks 13 can drive the movable frame 4 to move relative to each other, so as to achieve relative close clamping of the arc-shaped clamping plate 15.

[0028] The upper and lower ends of the threaded block 13 are fixedly connected to the movable frame 4. The outer end of the left movable frame 4 is fixedly connected to the motor 2 14. The output end of the motor 2 14 is fixedly connected to the fixed plate 21. The inside of the right movable frame 4 is also rotatably connected to the fixed plate 21. The other end of the upper part of the processing box 1 is provided with a slide groove 10. The movable frame 4 is fixedly connected to the slider 17. The slider 17 is slidably connected inside the slide groove 10. By starting the motor 2 14, the fixed plate 21 can be rotated, thereby flipping the polished seal without re-clamping, improving processing efficiency. In addition, the upper slider 17 and the slide groove 10 can restrict the movable frame 4 to ensure the stability of the clamping assembly during use.

[0029] Movable rods 22 are movably connected to both ends of the connecting plate 24. An arc-shaped clamping plate 15 is fixedly connected to the outer end of the movable rod 22. A spring 23 is sleeved on the movable rod 22. One end of the spring 23 is fixedly connected to the connecting plate 24, and the other end is fixedly connected to the arc-shaped clamping plate 15. By setting the movable rod 22 and the spring 23, the arc-shaped clamping plate 15 can have an elastic force, which can not only avoid damage when clamping the seal, but also improve the clamping effect. The arc-shaped clamping plate 15 is made of highly wear-resistant and oil-resistant polyurethane material, and the surface is designed with anti-slip texture. This material has both elasticity and rigidity, which can prevent scratching the surface of the seal during clamping. At the same time, when there are tolerances in the dimensions of the seal, the compression of the spring 23 adapts to change, which can prevent the workpiece from being deformed due to rigid clamping. Under grinding vibration, the spring 23 continuously applies radial compensation force to counteract vibration displacement and ensure that the workpiece does not loosen.

[0030] A mounting bracket 5 is fixedly connected to the upper center of the processing box 2. A cylinder 6 is fixedly connected to the inner end of the mounting bracket 5. A connecting plate 24 is fixedly connected to the extended end of the cylinder 6. A motor 25 is fixedly connected to the lower end of the connecting plate 24. A grinding disc 16 is fixedly connected to the output end of the motor 25. A cylinder 18 is fixedly connected to the upper end of the processing box 2. Starting the cylinder 6 can drive the connecting plate 24 and the grinding disc 16 to move downwards, and starting the motor 25 can drive the grinding disc 16 to rotate. The grinding disc 16 can achieve rapid grinding of the device.

[0031] The extension end of cylinder 18 passes through the processing box 2 and is fixedly connected to a water storage plate 19. A water inlet pipe 7 is installed through the upper end of the water storage plate 19. Several cooling nozzles 20 are installed through the inner end of the water storage plate 19. A collection cabinet 9 is slidably connected inside the collection box 1. A door 8 is provided at the outer end of the processing box 2. The water inlet pipe 7 can be connected to external equipment. After the grinding process is completed, starting cylinder 18 can drive the cooling component to move downward, so that the cooling nozzles 20 correspond to the sealing parts. The cold water sprayed by the cooling nozzles can quickly cool the sealing parts and improve the processing efficiency of the device.

[0032] Working principle: During use, the operator opens the door 8 and places the mechanical circular seal to be processed in the middle of the two arc-shaped clamps 15. The motor 1 3 is started to drive the bidirectional screw 12 to rotate. Under the action of the threaded connection, the two threaded blocks 13 can drive the movable frame 4 to achieve relative movement, thereby ensuring that the internal arc-shaped clamps 15 can fix and hold the mechanical circular seal, ensuring stability during the grinding process. Then, the cylinder 1 6 is started to drive the grinding assembly to move downward, so that the grinding disc 16 can contact the seal. Then, the motor 3 25 is started to drive the grinding disc 16 to rotate, and the grinding disc 16 can perform the grinding work on the seal. After the grinding is completed, the motor 2 14 is started to drive the entire clamping assembly and the seal to flip over, ensuring that the grinding assembly can grind the other side of the seal, improving the grinding efficiency and grinding effect of the device.

[0033] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A grinding device for machining mechanical seals, comprising a collection box (1), characterized in that, The upper end of the collection box (1) is fixedly connected to the processing box (2), and the outer end of the processing box (2) is fixedly connected to the motor (3). The upper end of the processing box (2) is provided with a slot (11), and the inside of the slot (11) is rotatably connected to a bidirectional screw (12). The output end of the motor (3) is fixedly connected to the bidirectional screw (12), and two threaded blocks (13) are connected to the bidirectional screw (12). The upper and lower ends of the threaded block (13) are fixedly connected to a movable frame (4). The outer end of the movable frame (4) on the left is fixedly connected to a motor (14). The output end of the motor (14) is fixedly connected to a fixed plate (21). The inside of the movable frame (4) on the right is also rotatably connected to a fixed plate (21). A slide groove (10) is opened at the other end of the upper part of the processing box (2). A slider (17) is fixedly connected to the movable frame (4). The slider (17) is slidably connected inside the slide groove (10).

2. The grinding device for machining mechanical seals according to claim 1, characterized in that, The fixed plate (21) is movably connected to both ends of a movable rod (22), and the outer end of the movable rod (22) is fixedly connected to an arc-shaped clamp (15).

3. A grinding device for machining mechanical seals according to claim 2, characterized in that, A spring (23) is fitted on the movable rod (22). One end of the spring (23) is fixedly connected to the connecting plate (24), and the other end is fixedly connected to the arc-shaped clamp (15).

4. A grinding device for machining mechanical seals according to claim 1, characterized in that, A mounting bracket (5) is fixedly connected to the upper center of the processing box (2), and a cylinder (6) is fixedly connected to the inner end of the mounting bracket (5).

5. A grinding device for machining mechanical seals according to claim 4, characterized in that, The extension end of the cylinder (6) is fixedly connected to a connecting plate (24), and the lower end of the connecting plate (24) is fixedly connected to a motor (25).

6. A grinding device for machining mechanical seals according to claim 5, characterized in that, The output end of the motor three (25) is fixedly connected to the grinding disc (16), and the upper end of the processing box (2) is fixedly connected to the cylinder two (18).

7. A grinding device for machining mechanical seals according to claim 6, characterized in that, The extension end of the cylinder 2 (18) is fixedly connected to a water storage plate (19) through the processing box (2). A water inlet pipe (7) is installed through the upper end of the water storage plate (19), and several cooling nozzles (20) are installed through the inner end of the water storage plate (19).

8. A grinding device for machining mechanical seals according to claim 1, characterized in that, The collection box (1) is internally connected to a collection cabinet (9), and the processing box (2) is provided with a door (8) at its outer end.

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