Machining device for mechanical sealing element

Abstract

The utility model provides a machining device for a mechanical sealing element, which belongs to the technical field of mechanical sealing element machining, and comprises a support frame, a three-jaw chuck, a driving motor, a movable frame, a clamping device, a clamping device, a clamping device and a clamping device, wherein the three-jaw chuck is mounted at the bottom end of the support frame; the expansion structure comprises a rotating shaft fixed to the end of an output shaft of the driving motor, a connecting sleeve connected to the outer side of the rotating shaft in a sliding mode and rotationally connected with the push arm, a power assembly arranged at the top end of the connecting sleeve, and a grinding piece detachably installed on one side of the push plate. According to the device, the second hydraulic push rod extends, the connecting sleeve moves to push the push arm to move downwards, then the push plate expands outwards, and the polishing piece is unfolded according to a preset track, so that the self-adaptive adjusting function of the device is achieved, the requirements of mechanical sealing pieces of multiple specifications are met, polishing parts do not need to be frequently replaced, and the universality of the device is improved; meanwhile, replacement operation is reduced, and time and labor cost are saved.

Description

A processing apparatus for mechanical seals Technical Field

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

[0002] In the manufacturing process of mechanical seals, to improve the precision of the seals, a processing device is used to finely grind the sealing end faces, removing burrs and uneven areas to achieve a surface roughness at the micron level. This ensures a tight fit between the dynamic and static rings, reducing the risk of leakage.

[0003] Chinese patent CN210968133U discloses a grinding device for machining mechanical seals. This invention includes a base, a waste container, and a cavity. The waste container is housed within the base, and the cavity is formed on the lower side of the waste container. A magnet is attached to the cavity. The advantages are: by using a transparent cover, waste container, cavity, and magnet, this invention prevents grinding debris from scattering everywhere. The magnet ensures that the debris is collected in the waste container, thus preventing harm to the health of the processing personnel.

[0004] The aforementioned patent still has the following shortcomings: it is not applicable to mechanical seals of different diameters. Since the grinding head size of the existing device is usually fixed, the device needs to frequently replace the grinding head when processing mechanical seals of different diameters, which leads to an increase in the overall processing time and a reduction in productivity. Summary of the Invention

[0005] This invention provides a processing device for mechanical seals, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0007] An embodiment of this utility model provides a processing device for mechanical seals, including a support frame, and further comprising:

[0008] A three-jaw chuck is installed at the bottom of the support frame, and a debris groove is installed at the bottom of the support frame.

[0009] A top frame is fixed to the top of a support frame, and a first hydraulic push rod is installed at the top of the top frame. A movable frame is installed at the telescopic end of the first hydraulic push rod, and guide rods that are slidably connected to the top frame are fixed on both sides of the top of the movable frame.

[0010] The drive motor is mounted on one side of the mobile frame;

[0011] An expansion structure is provided at the bottom end of the drive motor. The expansion structure includes a rotating shaft fixed to the end of the output shaft of the drive motor, a guide arm rotatably connected to the bottom end of the outer side of the rotating shaft, a push plate rotatably connected to one side of the guide arm, a push arm rotatably connected to a support frame on one side of the push plate, a connecting sleeve slidably connected to the outer side of the rotating shaft and rotatably connected to the push arm, and a power component provided at the top of the connecting sleeve.

[0012] The grinding disc is detachably mounted on one side of the push plate;

[0013] The pressure-relief structure, located inside the expansion structure, is used to buffer the pressure between the grinding disc and the mechanical seal.

[0014] The above technical solution involves clamping and fixing the mechanical seal with a three-jaw chuck, followed by the extension of the first hydraulic push rod, which brings the grinding disc into contact with the mechanical seal. The drive motor is then started to rotate the grinding disc and grind the mechanical seal. An expansion structure is used to adjust the position of the grinding disc so that it fits tightly against the inner wall of the mechanical seal.

[0015] Furthermore, the power assembly includes a bearing installed inside the top of the connecting sleeve, a first connecting plate installed on the top of the bearing, a fixed seat installed on one side of the movable frame, a second hydraulic push rod installed inside the fixed seat, and a second connecting plate installed at the telescopic end of the second hydraulic push rod.

[0016] Through the above technical solution, the extension of the second hydraulic push rod causes the connecting sleeve to move and push the push arm downward. Then the push plate expands outward, causing the grinding disc to unfold along a predetermined trajectory, thereby adjusting the diameter of the grinding disc to meet the processing requirements of mechanical seals of different sizes.

[0017] Furthermore, the guide arms are arranged in a ring at equal intervals on the outside of the rotating shaft, and adjacent groups of guide arms in the vertical direction are distributed in parallel.

[0018] Through the above technical solution, the parallel distributed guide arms constrain the movement trajectory of the push plate, ensuring that the grinding disc unfolds into a regular shape.

[0019] Furthermore, the first connecting plate forms a sliding structure with the top frame and the rotating shaft, and the first connecting plate and the rotating shaft form a rotating structure.

[0020] The above technical solution ensures that the first connecting plate can rotate freely when the shaft rotates, which not only does not hinder the shaft from driving the grinding disc to rotate and grind, but also allows for the transmission of power.

[0021] Furthermore, the pressure-relieving structure includes a lower sliding sleeve fixed to the top of the first connecting plate, an upper sliding sleeve slidably connected to the outside of the lower sliding sleeve and connected to the second connecting plate, a moving rod threadedly connected to the inside of the lower sliding sleeve, a buffer spring installed between the moving rod and the upper sliding sleeve, and a sliding rod slidably connected to the inside of the top of the upper sliding sleeve and connected to the moving rod.

[0022] The above technical solution achieves precise buffering adjustment of the pressure between the grinding disc and the mechanical seal by using a moving rod to compress the buffer spring to cause elastic deformation, absorbing part of the pressure, and rotating the slide rod to adjust the elastic force of the buffer spring.

[0023] Furthermore, the slide rod extends through the fixed seat into the interior of the upper sliding sleeve, and a sliding structure is formed between the slide rod and the fixed seat.

[0024] The above technical solution can accurately guide the buffering process, ensuring that the slide bar drives the moving rod to move smoothly and avoiding deviation and shaking during buffering.

[0025] The above-described solution of this utility model has at least the following beneficial effects:

[0026] This invention utilizes the extension of a second hydraulic push rod to move the connecting sleeve and push the push arm downward. Subsequently, the push plate expands outward, causing the grinding disc to unfold along a predetermined trajectory. This enables the device to achieve adaptive adjustment, meet the requirements of various mechanical seals, and eliminate the need for frequent replacement of grinding components, thereby improving the device's versatility and reducing replacement operations, saving time and labor costs.

[0027] This invention utilizes a movable rod to compress a buffer spring, causing it to deform elastically and absorb some of the pressure. The rotation of the slide rod adjusts the spring force, thereby achieving the pressure buffering function of the device. This prevents excessive pressure from damaging the sealing surface, ensuring a smooth and even surface after grinding, improving sealing performance, and reducing wear on the grinding head and seals. Attached Figure Description

[0028] Figure 1 is one of the structural schematic diagrams of this utility model;

[0029] Figure 2 is a second schematic diagram of the structure of this utility model;

[0030] Figure 3 is a three-dimensional structural diagram of the expansion structure provided by this utility model;

[0031] Figure 4 is a schematic diagram of the three-dimensional cross-sectional structure of the expansion structure provided by this utility model;

[0032] Figure 5 is a partial cross-sectional enlarged structural schematic diagram of point A in Figure 4 provided by this utility model;

[0033] Figure 6 is a three-dimensional cross-sectional view of the pressure-relieving structure provided by this utility model.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Support frame; 2. Three-jaw chuck; 3. Grinding disc; 4. Expansion structure; 401. First connecting plate; 402. Second connecting plate; 403. Second hydraulic push rod; 404. Fixed seat; 405. Connecting sleeve; 406. Guide arm; 407. Push plate; 408. Rotating shaft; 409. Push arm; 410. Bearing; 5. Pressure relief structure; 501. Slide rod; 502. Upper sliding sleeve; 503. Lower sliding sleeve; 504. Moving rod; 505. Buffer spring; 6. Guide rod; 7. First hydraulic push rod; 8. Moving frame; 9. Drive motor; 10. Top frame; 11. Debris trough. Detailed Implementation

[0036] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0037] As shown in Figures 1 to 6, an embodiment of this utility model provides a processing device for mechanical seals, including a support frame 1, and further comprising:

[0038] A three-jaw chuck 2 is installed at the bottom of the support frame 1, and a debris groove 11 is installed at the bottom of the support frame 1.

[0039] The top frame 10 is fixed to the top of the support frame 1, and a first hydraulic push rod 7 is installed on the top of the top frame 10. A movable frame 8 is installed on the telescopic end of the first hydraulic push rod 7. Guide rods 6 that are slidably connected to the top frame 10 are fixed on both sides of the top of the movable frame 8.

[0040] The drive motor 9 is mounted on one side of the movable frame 8;

[0041] An expansion structure 4 is provided at the bottom end of the drive motor 9. The expansion structure 4 includes a rotating shaft 408 fixed to the end of the output shaft of the drive motor 9, a guide arm 406 rotatably connected to the bottom end of the outer side of the rotating shaft 408, a push plate 407 rotatably connected to one side of the guide arm 406, a push arm 409 rotatably connected to the support frame 1 on one side of the push plate 407, a connecting sleeve 405 slidably connected to the outer side of the rotating shaft 408 and rotatably connected to the push arm 409, and a power component provided at the top end of the connecting sleeve 405.

[0042] Grinding disc 3 is detachably mounted on one side of push plate 407;

[0043] The pressure-relief structure 5 is located inside the expansion structure 4 and is used to buffer the pressure between the grinding disc 3 and the mechanical seal.

[0044] In this embodiment of the utility model, the mechanical seal is clamped and fixed by the three-jaw chuck 2 to ensure that the seal remains stable and does not shake during processing. The first hydraulic push rod 7 extends and drives the moving frame 8 to move up and down, so that the grinding disc 3 comes into contact with the mechanical seal. At the same time, the guide rod 6 plays a guiding role during the movement of the moving frame 8, ensuring that the moving frame 8 moves smoothly in the vertical direction and avoids tilting or shaking. The grinding disc 3 is driven to rotate by the drive motor 9 to grind the mechanical seal held by the three-jaw chuck 2. The position of the grinding disc 3 is adjusted by the expansion structure 4 so that it is in close contact with the inner wall of the mechanical seal.

[0045] As shown in Figures 3 to 5, the power assembly includes a bearing 410 installed inside the top of the connecting sleeve 405, a first connecting plate 401 installed on the top of the bearing 410, a fixed seat 404 installed on one side of the movable frame 8, a second hydraulic push rod 403 installed inside the fixed seat 404, and a second connecting plate 402 installed at the telescopic end of the second hydraulic push rod 403. The guide arms 406 are arranged in a ring at equal intervals on the outside of the rotating shaft 408, and adjacent groups of guide arms 406 in the vertical direction are parallel to each other. The first connecting plate 401 forms a sliding structure with the rotating shaft 408 through the top frame 10, and the first connecting plate 401 forms a rotating structure with the rotating shaft 408.

[0046] In this embodiment of the utility model, the second hydraulic push rod 403 pushes the second connecting plate 402 to move. The second connecting plate 402 pushes the first connecting plate 401 to move through the pressure relief structure 5. Then, the first connecting plate 401 slides along the rotating shaft 408, causing the connecting sleeve 405 to move accordingly. The movement of the connecting sleeve 405 pushes the push arm 409 to move downward. The push arm 409 pushes the push plate 407 to move. At the same time, the push plate 407 expands outward under the action of the guide arm 406, so that the grinding disc 3 unfolds along a predetermined trajectory, realizing the adjustment of the diameter of the grinding disc 3 to adapt to the processing requirements of mechanical seals of different sizes. The bearing 410 prevents the first connecting plate 401 from rotating with the connecting sleeve 405 during the rotation of the grinding disc 3, ensuring accurate power transmission direction.

[0047] As shown in Figures 3 to 6, the pressure relief structure 5 includes a lower sliding sleeve 503 fixed to the top of the first connecting plate 401, an upper sliding sleeve 502 slidably connected to the outside of the lower sliding sleeve 503 and connected to the second connecting plate 402, a moving rod 504 threadedly connected to the inside of the lower sliding sleeve 503, a buffer spring 505 installed between the moving rod 504 and the upper sliding sleeve 502, and a sliding rod 501 slidably connected to the inside of the top of the upper sliding sleeve 502 and connected to the moving rod 504. The sliding rod 501 extends through the fixed seat 404 into the inside of the upper sliding sleeve 502, and a sliding structure is formed between the sliding rod 501 and the fixed seat 404.

[0048] In this embodiment of the invention, when the grinding disc 3 comes into contact with the mechanical seal and generates pressure, the pressure is transmitted to the first connecting plate 401 through the push plate 407, push arm 409, and connecting sleeve 405. This causes the moving rod 504 to compress the buffer spring 505. The buffer spring 505 undergoes elastic deformation, absorbing part of the pressure and playing a buffering role. This prevents excessive pressure from damaging the surface of the mechanical seal. Rotating the slide rod 501 can drive the moving rod 504 to move upward, changing the initial compression of the buffer spring 505 and thus adjusting the elasticity of the buffer spring 505. This achieves precise buffering adjustment of the pressure between the grinding disc 3 and the mechanical seal.

[0049] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A processing apparatus for mechanical seals, comprising a support frame (1), characterized in that, Also includes: A three-jaw chuck (2) is installed at the bottom of a support frame (1), and a chip groove (11) is installed at the bottom of the support frame (1); a top frame (10) is fixed at the top of the support frame (1), and a first hydraulic push rod (7) is installed at the top of the top frame (10), and a movable frame (8) is installed at the telescopic end of the first hydraulic push rod (7), and guide rods (6) that are slidably connected to the top frame (10) are fixed on both sides of the top of the movable frame (8); a drive motor (9) is installed on one side of the movable frame (8); an expansion structure (4) is provided at the bottom of the drive motor (9), wherein the expansion structure (4) includes a component fixed at the output of the drive motor (9). The shaft (408) at the end of the shaft, the guide arm (406) rotatably connected to the bottom of the outer side of the shaft (408), the push plate (407) rotatably connected to one side of the guide arm (406), the push arm (409) rotatably connected to the support frame (1) on one side of the push plate (407), the connecting sleeve (405) slidably connected to the outer side of the shaft (408) and rotatably connected to the push arm (409), and the power assembly set at the top of the connecting sleeve (405); the grinding disc (3), which is detachably installed on one side of the push plate (407); and the pressure relief structure (5), which is set inside the expansion structure (4) and is used to buffer the pressure between the grinding disc (3) and the mechanical seal.

2. The processing apparatus for mechanical seals according to claim 1, characterized in that, The power assembly includes a bearing (410) installed inside the top of the connecting sleeve (405), a first connecting plate (401) installed on the top of the bearing (410), a fixed seat (404) installed on one side of the movable frame (8), a second hydraulic push rod (403) installed inside the fixed seat (404), and a second connecting plate (402) installed on the telescopic end of the second hydraulic push rod (403).

3. The processing apparatus for mechanical seals according to claim 2, characterized in that, The guide arms (406) are arranged in a ring at equal intervals on the outside of the rotating shaft (408), and adjacent groups of guide arms (406) in the vertical direction are distributed in parallel.

4. The processing apparatus for mechanical seals according to claim 2, characterized in that, The first connecting plate (401) forms a sliding structure with the top frame (10) and the rotating shaft (408), and the first connecting plate (401) and the rotating shaft (408) form a rotating structure.

5. A processing apparatus for mechanical seals according to claim 2, characterized in that, The pressure relief structure (5) includes a lower sliding sleeve (503) fixed to the top of the first connecting plate (401), an upper sliding sleeve (502) slidably connected to the outside of the lower sliding sleeve (503) and connected to the second connecting plate (402), a moving rod (504) threadedly connected to the inside of the lower sliding sleeve (503), a buffer spring (505) installed between the moving rod (504) and the upper sliding sleeve (502), and a slide rod (501) slidably connected to the inside of the top of the upper sliding sleeve (502) and connected to the moving rod (504).

6. The processing apparatus for mechanical seals according to claim 5, characterized in that, The slide rod (501) extends through the fixed seat (404) into the interior of the upper slide sleeve (502), and the slide rod (501) and the fixed seat (404) form a sliding structure.

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