Polishing device for machining mechanical sealing element

Abstract

The invention discloses a polishing device for mechanical sealing element machining, and relates to the technical field of mechanical sealing element machining, the polishing device comprises a support and a bottom plate, the bottom plate is located on one side of the support, upper positioning blocks are symmetrically and fixedly arranged on the two sides of the support, a vertical plate is arranged on one side of the upper surface of the support, and a movable vertical plate is arranged on the inner side of the vertical plate; a lifting plate is arranged on one side of the movable vertical plate, an L-shaped plate is fixedly connected to one side of the lifting plate, and a grinding disc is arranged on the lower portion of one side of the L-shaped plate. According to the grinding device for mechanical sealing part machining, equipment stability is guaranteed through structures such as a positioning plug pin, and the influence of vibration on grinding precision is reduced; the transmission structure and the guide structure are matched to realize accurate movement of the grinding disc; meanwhile, stable power is provided for the grinding disc through chain wheel and chain transmission, and the grinding disc is convenient to replace; and moreover, the clamping structure is high in universality, the position of the carrier plate can be adjusted, and the flexibility of position adjustment of the sealing piece and the grinding disc is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of machining of mechanical seals, and particularly to a grinding device for machining mechanical seals. Background Art

[0002] A mechanical seal is a mechanical component used to prevent fluid leakage and plays a key role in various industrial equipment. It is usually installed between the shaft and the housing of rotating equipment such as pumps, compressors, and reactors, and relies on the tight fit of the sealing end faces to prevent medium leakage.

[0003] However, the existing technology still has the following problems:

[0004] First of all, for the grinding devices for machining mechanical seals in the existing technology, the adjustment of the grinding position is usually inconvenient. The carrier plate is usually fixed or only has a simple moving method, and the relative position between the mechanical seal and the grinding disc cannot be flexibly adjusted. If the machining accuracy requirements of the seal are relatively high, it is difficult for the existing devices to accurately position, resulting in problems such as uneven grinding and large deviation during the grinding process, and the grinding quality cannot be guaranteed.

[0005] Secondly, for the grinding devices for machining mechanical seals in the existing technology, most of them have unstable power transmission and inconvenient replacement of the grinding disc. Many existing grinding devices adopt direct drive or simple transmission methods, and are easily affected by motor vibration and load changes during the power transmission process, which will cause fluctuations in the rotational speed of the grinding disc, affect the uniformity of the grinding effect, and reduce the surface quality of the mechanical seal; while the connection method between the grinding disc and the rotating shaft is often relatively complex or fixed, and some devices adopt welding or integrated design. When the grinding disc is worn or different types need to be replaced, it is difficult to quickly disassemble and install a new grinding disc, which will seriously reduce the production efficiency.

[0006] Moreover, for the grinding devices for machining mechanical seals in the existing technology, some have poor clamping versatility. Most of the clamping structures of the existing grinding devices are relatively single, and it is difficult to quickly adapt to the clamping requirements of mechanical seals of different sizes. When encountering seals with large size differences, it may be necessary to manually frequently replace the clamping components or use complex auxiliary tooling, which is cumbersome and time-consuming, and seriously affects the processing efficiency.

[0007] In view of the above problems, the inventor proposes a grinding device for machining mechanical seals to solve the above problems. Summary of the Invention

[0008] In order to solve the problems of inconvenient adjustment of the grinding position, unstable power transmission, inconvenient replacement of the grinding disc, and poor clamping versatility of the grinding device for machining mechanical seals; the purpose of the present invention is to provide a grinding device for machining mechanical seals.

[0009] To solve the above technical problems, the present invention adopts the following technical solutions: A grinding device for machining mechanical seals, comprising a bracket and a bottom plate. The bottom plate is located on one side of the bracket. Upper positioning blocks are symmetrically and fixedly arranged on both sides of the bracket. Lower positioning blocks are symmetrically and fixedly arranged on one side of the bottom plate. A positioning pin is movably inserted through the upper surfaces of the corresponding lower positioning block and upper positioning block. A pull ring is fixedly arranged at the upper end of the positioning pin. A vertical plate is arranged on one side of the upper surface of the bracket. A movable vertical plate is arranged inside the vertical plate. A lifting plate is arranged on one side of the movable vertical plate. An L-shaped plate is fixedly connected to one side of the lifting plate. A grinding disc is arranged at the lower part of one side of the L-shaped plate. A carrier plate is slidably arranged above the bottom plate.

[0010] Preferably, an electric push rod is fixedly arranged inside the vertical plate, and the output end of the electric push rod is fixedly connected to the movable vertical plate. Telescopic rods are symmetrically and fixedly arranged between the vertical plate and the movable vertical plate. Card slots are symmetrically opened on the upper surface of the bracket. Blocks are symmetrically and fixedly arranged on the lower surface of the movable vertical plate, and the blocks are clamped on the corresponding bracket.

[0011] Preferably, two support blocks are fixedly arranged inside the movable vertical plate. A lead screw is rotatably arranged between the two support blocks. A first servo motor is fixedly arranged on the upper surface of the support block located on the upper side. The output end of the first servo motor penetrates through the support block and is fixedly connected to the lead screw. A lifting block is threadedly sleeved on the outer surface of the lead screw, and the outer side of the lifting block is fixedly connected to the lifting plate.

[0012] Preferably, a protective shell and a DC motor are connected in a bolted manner on the side of the L-shaped plate away from the lifting plate. Two sprockets are rotatably arranged inside the protective shell. A chain is sleeved on the outer surfaces of the two sprockets. The output end of the DC motor is fixedly connected to one of the sprockets. A rotating shaft is fixedly arranged through the lower surface of the other sprocket. The lower surface of the rotating shaft penetrates through the protective shell and is detachably connected to the grinding disc. An insertion piece is fixedly arranged on the upper surface of the grinding disc. A slot is opened at the lower end of the rotating shaft. The insertion piece is inserted into the slot. The insertion piece and the rotating shaft are connected in a bolted manner.

[0013] Preferably, two second guide rails are fixedly arranged on the upper surface of the bottom plate. Second sliders are slidably arranged on the upper surfaces of the second guide rails. The upper surface of the second slider is fixedly connected to the carrier plate. A fixing plate is fixedly arranged on one side of the carrier plate. A positioning rod is fixedly arranged on the upper surface of the bottom plate. The fixing plate and the positioning rod are connected in a bolted manner. A plurality of bolt grooves are opened on the upper surfaces of the positioning rod and the fixing plate.

[0014] Preferably, a placement rack is fixedly arranged on the upper surface of the carrier board, a gear is rotatably arranged on the upper surface of the carrier board, a second servo motor is fixedly arranged on the upper surface of the carrier board, and the output end of the second servo motor is fixedly connected to the gear. The outer surface of the gear is symmetrically meshed with a rack, and the lower surface of the rack is slidably arranged on the upper surface of the carrier board. The outer side of the upper surface of the rack is fixedly provided with a vertical rod, and the upper end of the vertical rod is fixedly provided with a K-shaped clamping block. Dust-proof plates are damped and clamped on both sides of the placement rack.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The bracket and the bottom plate of the present invention are positioned by positioning pins, upper positioning blocks and lower positioning blocks, which ensures the stability of the equipment during operation, reduces the influence of vibration on the grinding accuracy. At the same time, transmission structures such as electric push rods and lead screws cooperate with guiding structures such as chutes and first guide rails to achieve precise movement of the grinding disc in the vertical and horizontal directions, improving the grinding accuracy and reliability.

[0017] 2. The present invention uses the transmission method of a DC motor through a sprocket and a chain to provide stable power for the grinding disc, ensuring that the grinding disc can rotate at a high speed to achieve efficient grinding. And the grinding disc is connected to the rotating shaft through an insert and a slot with bolts, which is convenient for replacing different types of grinding discs to meet different grinding requirements.

[0018] 3. The clamping structure composed of a second servo motor, a gear and a rack in the present invention can conveniently and quickly clamp and fix mechanical seals of different sizes, improving the versatility of the equipment. At the same time, the carrier board can slide on the bottom plate, and the position is adjusted by the bolt connection between the fixed plate and the positioning rod, further increasing the flexibility of adjusting the relative position between the mechanical seal and the grinding disc, which is beneficial to improving the grinding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the back of the overall structure of the present invention.

[0022] Figure 3 It is an exploded view of the connection structure between the bracket and the bottom plate of the present invention and the related structure of the vertical plate.

[0023] Figure 4 This is an exploded view of the connection structure between the movable vertical plate and the lifting plate of the present invention.

[0024] Figure 5 This is an exploded view of the related structure of the L-shaped plate of the present invention.

[0025] Figure 6 This is an exploded view of the cross-section of the storage rack of the present invention and its related structure.

[0026] Figure 7 This is an exploded view of the related structure of the connection between the bottom plate and the carrier plate of the present invention.

[0027] In the figure: 1, support; 11, upper positioning block; 12, lower positioning block; 13, positioning pin; 14, pull ring; 2, bottom plate; 21, second guide rail; 22, second slider; 23, fixing plate; 24, positioning rod; 25, bolt groove; 3, vertical plate; 31, electric push rod; 32, telescopic rod; 33, card slot; 34, card block; 4, movable vertical plate; 41, support block; 42, lead screw; 43, first servo motor; 44, lifting block; 45, limiting block; 46, first guide rail; 47, first slider; 5, lifting plate; 6, L-shaped plate; 61, DC motor; 62, protective shell; 63, sprocket; 64, chain; 65, rotating shaft; 7, grinding disc; 71, insert; 72, slot; 8, carrier plate; 81, storage rack; 82, second servo motor; 83, gear; 84, toothed plate; 85, vertical rod; 86, K-shaped clamping block; 87, dust-proof plate. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Embodiment: As Figures 1-7As shown in the figure, the present invention provides a grinding device for machining mechanical seals, including a bracket 1 and a bottom plate 2. The bottom plate 2 is located on one side of the bracket 1. On one side of the upper surface of the bracket 1, there is a vertical plate 3, and inside the vertical plate 3, there is a movable vertical plate 4. On one side of the movable vertical plate 4, there is a lifting plate 5. On one side of the lifting plate 5, there is a fixed L-shaped plate 6, and at the lower part of one side of the L-shaped plate 6, there is a grinding disc 7. On the upper side of the bottom plate 2, there is a slidable carrier plate 8. The bracket 1 and the bottom plate 2 serve as the basic support structure, providing installation positions for other components. The vertical plate 3 is used to install the movable vertical plate 4. The movable vertical plate 4 can move relative to the vertical plate 3, thereby driving the lifting plate 5, the L-shaped plate 6, and the grinding disc 7 to move, realizing the adjustment of the grinding position. The carrier plate 8 can slide on the bottom plate 2, and is used to place and adjust the position of the mechanical seal, so that the seal can be accurately aligned with the grinding disc 7.

[0030] On both sides of the bracket 1, there are symmetrically fixed upper positioning blocks 11. On one side of the bottom plate 2, there are symmetrically fixed lower positioning blocks 12. And the upper surfaces of the corresponding lower positioning blocks 12 and upper positioning blocks 11 are jointly movably inserted with a positioning pin 13. At the upper end of the positioning pin 13, there is a fixed pull ring 14. By inserting the positioning pin 13 into the corresponding upper positioning block 11 and lower positioning block 12, the relative position of the bracket 1 and the bottom plate 2 is fixed, ensuring the stability of the overall structure of the device. The pull ring 14 facilitates the insertion and extraction of the positioning pin 13.

[0031] Inside the vertical plate 3, there is a fixed electric push rod 31, and the output end of the electric push rod 31 is fixedly connected to the movable vertical plate 4. Between the vertical plate 3 and the movable vertical plate 4, there are symmetrically fixed telescopic rods 32. On the upper surface of the bracket 1, there are symmetrically opened card slots 33. On the lower surface of the movable vertical plate 4, there are symmetrically fixed blocks 34, and the blocks 34 are clamped on the corresponding bracket 1. Start the electric push rod 31, and its output end pushes the movable vertical plate 4 to move up and down along the card slots 33 on the bracket 1. The telescopic rods 32 play an auxiliary supporting and guiding role, ensuring the stable movement of the movable vertical plate 4 and preventing it from shaking. The cooperation between the blocks 34 and the card slots 33 further restricts the movement trajectory of the movable vertical plate 4, enabling it to move only along the direction of the card slots 33, enhancing the stability and accuracy of the movement.

[0032] On the inner side of the movable vertical plate 4, two support blocks 41 are fixedly arranged, and a lead screw 42 is rotatably arranged between the two support blocks 41. On the upper surface of the upper support block 41, a first servo motor 43 is fixedly arranged, and the output end of the first servo motor 43 penetrates through the support block 41 and is fixedly connected to the lead screw 42. A lifting block 44 is threadedly sleeved on the outer surface of the lead screw 42, and the outer side of the lifting block 44 is fixedly connected to the lifting plate 5. A limiting block 45 is fixedly arranged on one side of the movable vertical plate 4, and the lead screw 42 movably penetrates through the limiting block 45. On one side of the movable vertical plate 4, first guide rails 46 are symmetrically and fixedly arranged, and first sliders 47 are slidably arranged on the outer surfaces of the first guide rails 46. One side of the first slider 47 is fixedly connected to the lifting plate 5. After the first servo motor 43 is started, it drives the lead screw 42 to rotate. Since the lead screw 42 is threadedly connected to the lifting block 44, and the lifting block 44 is matched with the first guide rail 46 through the first slider 47, the lifting block 44 can only move up and down along the direction of the first guide rail 46, thereby driving the lifting plate 5, the L-shaped plate 6, and the grinding disc 7 to lift. The limiting block 45 plays a role in limiting the lead screw 42 to prevent it from rotating or displacing excessively. By controlling the forward and reverse rotation and the rotation speed of the first servo motor 43, the height of the grinding disc 7 can be accurately adjusted.

[0033] On the side of the L-shaped plate 6 far from the lifting plate 5, a protective shell 62 and a DC motor 61 are connected by bolts. Inside the protective shell 62, two sprockets 63 are rotatably arranged, and a chain 64 is jointly sleeved on the outer surfaces of the two sprockets 63. The output end of the DC motor 61 is fixedly connected to one of the sprockets 63, and a rotating shaft 65 is fixedly arranged through the lower surface of the other sprocket 63. The lower surface of the rotating shaft 65 penetrates through the protective shell 62 and is detachably connected to the grinding disc 7. When the DC motor 61 is started, it drives the sprocket 63 connected to it to rotate, and drives the other sprocket 63 to rotate synchronously through the chain 64, thereby rotating the rotating shaft 65 and realizing the high-speed rotation of the grinding disc 7 for grinding operations. The protective shell 62 plays a role in protecting the DC motor 61, the sprockets 63, and the chain 64, preventing debris, dust, etc. during the grinding process from entering and affecting their normal operation. The grinding disc 7 is detachably connected to the rotating shaft 65, which is convenient for replacing the grinding disc 7 according to different grinding requirements.

[0034] An insert 71 is fixedly arranged on the upper surface of the grinding disc 7, and a slot 72 is opened at the lower end of the rotating shaft 65. The insert 71 is inserted into the slot 72, and the insert 71 and the rotating shaft 65 are connected by bolts. The cooperation of the insert 71 and the slot 72, and then fixed with bolts, makes the installation and disassembly of the grinding disc 7 and the rotating shaft 65 more convenient. When it is necessary to replace the grinding disc 7 with different specifications or worn ones, just unscrew the bolts and pull out the insert 71 to quickly replace it, improving the use flexibility and maintenance efficiency of the equipment.

[0035] On the upper surface of the bottom plate 2, two second guide rails 21 are fixedly arranged, and on the upper surface of the second guide rails 21, second sliders 22 are slidably arranged. The upper surface of the second sliders 22 is fixedly connected to the carrier plate 8. On one side of the carrier plate 8, a fixed plate 23 is fixedly arranged. On the upper surface of the bottom plate 2, a positioning rod 24 is fixedly arranged, and the fixed plate 23 and the positioning rod 24 are connected in cooperation by bolts. A plurality of bolt grooves 25 are formed in the upper surfaces of the positioning rod 24 and the fixed plate 23. The second guide rails 21 and the second sliders 22 cooperate to enable the carrier plate 8 to slide smoothly on the bottom plate 2. By adjusting the position of the bolts between the fixed plate 23 and the positioning rod 24 in the bolt grooves 25, the position of the carrier plate 8 can be accurately adjusted, so as to realize the fine adjustment of the position of the mechanical seal placed on the carrier plate 8, ensure the accurate relative position between the seal and the grinding disc 7, and improve the grinding accuracy.

[0036] On the upper surface of the carrier plate 8, a placement rack 81 is fixedly arranged. On the upper surface of the carrier plate 8, a gear 83 is rotatably arranged. On the upper surface of the carrier plate 8, a second servo motor 82 is fixedly arranged, and the output end of the second servo motor 82 is fixedly connected to the gear 83. On the outer surface of the gear 83, two rack plates 84 are symmetrically engaged. The lower surfaces of the rack plates 84 are slidably arranged on the upper surface of the carrier plate 8. On the outer sides of the upper surfaces of the rack plates 84, vertical rods 85 are fixedly arranged, and at the upper ends of the vertical rods 85, K-shaped clamping blocks 86 are fixedly arranged. On both sides of the placement rack 81, dust-proof plates 87 are damped and clamped. The dust-proof plates 87 damped and clamped on both sides of the placement rack 81 can block the generated dust from splashing during the grinding process, reduce the influence of dust on the internal motor. Place the mechanical seal on the placement rack 81, start the second servo motor 82, drive the gear 83 to rotate, and the rack plates 84 engaged with the gear 83 slide on the carrier plate 8. Since the rack plates 84 are symmetrically arranged on both sides of the gear 83, when the gear 83 rotates, the two rack plates 84 will move in opposite or the same direction at the same time, and then drive the vertical rods 85 and the K-shaped clamping blocks 86 to move, so as to clamp or loosen the mechanical seal placed on the placement rack 81 and meet the fixing requirements of different sizes of seals.

[0037] This grinding device integrates multiple functions, such as the lifting and rotation of the grinding disc 7, the clamping and position adjustment of the mechanical seal, etc. Each function is driven by a motor, the operation is simple and convenient, and the work efficiency is improved. At the same time, its structure is reasonably designed, and each component works together to meet various grinding requirements during the processing of mechanical seals.

[0038] Among them, the electric push rod 31, the first servo motor 43, the DC motor 61 and the second servo motor 82 are all prior arts and will not be elaborated here; at the same time, the present invention also includes a power supply, a controller, a switch, etc., which are not the main technical points of this patent and will not be elaborated here.

[0039] Working principle: The relative position of the bracket 1 and the bottom plate 2 is fixed by inserting the positioning pin 13 into the corresponding upper positioning block 11 and lower positioning block 12, ensuring the stability of the overall structure of the equipment;

[0040] Start the electric push rod 31, and its output end pushes the moving vertical plate 4 to move up and down along the card slot 33 on the bracket 1. The telescopic rod 32 plays an auxiliary supporting and guiding role, so as to realize the vertical direction adjustment of the grinding disc 7. At the same time, the first servo motor 43 is started to drive the lead screw 42 to rotate. The lifting block 44 threadedly connected with the lead screw 42 drives the lifting plate 5, the L-shaped plate 6 and the grinding disc 7 to move up and down under the cooperation and guidance of the first guide rail 46 and the first slider 47, accurately controlling the height position of the grinding disc 7;

[0041] Start the DC motor 61, drive the sprocket 63 connected to its output end to rotate, and through the chain 64 transmission, make another sprocket 63 rotate synchronously, and then drive the rotating shaft 65 and the grinding disc 7 to rotate at high speed to perform grinding operations on the mechanical seal;

[0042] Place the mechanical seal on the placement rack 81, start the second servo motor 82, and its output end drives the gear 83 to rotate. The toothed plate 84 meshing with the gear 83 slides horizontally on the carrier plate 8, so that the K-shaped clamp block 86 on the toothed plate 84 moves, thereby clamping or loosening the mechanical seal, realizing the fixation of mechanical seals of different sizes. In addition, by adjusting the bolt connection position between the fixed plate 23 and the positioning rod 24 (using the bolt groove 25), the position of the carrier plate 8 on the bottom plate 2 can be changed, further adjusting the relative position between the mechanical seal and the grinding disc 7;

[0043] The dust-proof plates 87 clamped by damping on both sides of the placement rack 81 can block the generated dust from splashing during the grinding process, reducing the impact of dust on the working environment and operators.

[0044] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A grinding device for machining mechanical seals, comprising a bracket (1) and a bottom plate (2), characterized in that: The bottom plate (2) is located on one side of the bracket (1). On one side of the upper surface of the bracket (1), there is a vertical plate (3), and a movable vertical plate (4) is arranged inside the vertical plate (3). On one side of the movable vertical plate (4), there is a lifting plate (5). On one side of the lifting plate (5), there is an L-shaped plate (6) fixedly connected, and a grinding disc (7) is arranged at the lower part of one side of the L-shaped plate (6). A carrier plate (8) is slidably arranged on the upper side of the bottom plate (2).

2. The grinding device for machining mechanical seals according to claim 1, wherein: On both sides of the bracket (1), upper positioning blocks (11) are symmetrically and fixedly arranged. On one side of the bottom plate (2), lower positioning blocks (12) are symmetrically and fixedly arranged, and a positioning pin (13) is movably inserted through the upper surfaces of the corresponding lower positioning blocks (12) and upper positioning blocks (11). A pull ring (14) is fixedly arranged at the upper end of the positioning pin (13).

3. A grinding device for machining mechanical seals according to claim 2, characterized in that: An electric push rod (31) is fixedly arranged inside the vertical plate (3), and the output end of the electric push rod (31) is fixedly connected to the movable vertical plate (4).

4. A grinding device for machining mechanical seals according to claim 3, characterized in that: On both sides between the vertical plate (3) and the movable vertical plate (4), telescopic rods (32) are symmetrically and fixedly arranged. On the upper surface of the bracket (1), card slots (33) are symmetrically opened. On the lower surface of the movable vertical plate (4), clamping blocks (34) are symmetrically and fixedly arranged, and the clamping blocks (34) are clamped on the corresponding bracket (1).

5. The grinding device for machining mechanical seals according to claim 4, wherein: Inside the movable vertical plate (4), two support blocks (41) are fixedly arranged, and a lead screw (42) is rotatably arranged between the two support blocks (41). On the upper surface of the upper support block (41), a first servo motor (43) is fixedly arranged, and the output end of the first servo motor (43) penetrates through the support block (41) and is fixedly connected to the lead screw (42). A lifting block (44) is threadedly sleeved on the outer surface of the lead screw (42), and the outer side of the lifting block (44) is fixedly connected to the lifting plate (5).

6. The grinding device for machining mechanical seals according to claim 5, characterized in that: On one side of the movable vertical plate (4), a limiting block (45) is fixedly arranged, and the lead screw (42) movably penetrates through the limiting block (45). On one side of the movable vertical plate (4), first guide rails (46) are symmetrically and fixedly arranged, and first sliders (47) are slidably arranged on the outer surfaces of the first guide rails (46). One side of the first slider (47) is fixedly connected to the lifting plate (5).

7. A grinding device for machining mechanical seals according to claim 6, characterized in that: On the side of the L-shaped plate (6) far from the lifting plate (5), a protective shell (62) and a DC motor (61) are connected by bolts. Inside the protective shell (62), two sprockets (63) are rotatably arranged, and a chain (64) is sleeved on the outer surfaces of the two sprockets (63). The output end of the DC motor (61) is fixedly connected to one of the sprockets (63), and a rotating shaft (65) is fixedly arranged through the lower surface of the other sprocket (63). The lower surface of the rotating shaft (65) penetrates through the protective shell (62) and is detachably connected to the grinding disc (7).

8. A grinding device for machining mechanical seals according to claim 7, characterized in that: An insert (71) is fixedly arranged on the upper surface of the grinding disc (7). A slot (72) is opened at the lower end of the rotating shaft (65), and the insert (71) is inserted into the slot (72). The insert (71) and the rotating shaft (65) are connected by bolts.

9. A grinding device for machining mechanical seals according to claim 8, characterized in that: On the upper surface of the bottom plate (2), two second guide rails (21) are fixedly provided, and a second slider (22) is slidably arranged on the upper surface of the second guide rail (21). The upper surface of the second slider (22) is fixedly connected to the carrier plate (8). On one side of the carrier plate (8), a fixed plate (23) is fixedly provided. On the upper surface of the bottom plate (2), a positioning rod (24) is fixedly provided, and the fixed plate (23) and the positioning rod (24) are connected in cooperation by bolts. A plurality of bolt grooves (25) are provided on the upper surfaces of the positioning rod (24) and the fixed plate (23).

10. A grinding device for machining mechanical seals according to claim 9, characterized in that: On the upper surface of the carrier plate (8), a placement rack (81) is fixedly provided. A gear (83) is rotatably arranged on the upper surface of the carrier plate (8). On the upper surface of the carrier plate (8), a second servo motor (82) is fixedly provided, and the output end of the second servo motor (82) is fixedly connected to the gear (83). On the outer surface of the gear (83), a toothed plate (84) is symmetrically engaged, and the lower surface of the toothed plate (84) is slidably arranged on the upper surface of the carrier plate (8). On the outer side of the upper surface of the toothed plate (84), a vertical rod (85) is fixedly provided, and at the upper end of the vertical rod (85), a K-shaped clamp block (86) is fixedly provided. On both sides of the placement rack (81), a dust-proof plate (87) is damped and clamped.

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