A pipe flange sealing surface precision machining equipment

Abstract

This invention relates to the technical field of pipe flange processing equipment, specifically to a precision machining equipment for pipe flange sealing surfaces. The equipment includes a base and a rotating worktable mounted on the base. A support frame is located in the middle of the base, and multiple guide frames are arranged around the outer edge of the support frame. A lifting seat slides on the guide frames. The precision machining equipment also includes: a mounting base on the worktable; a clamping mechanism on the mounting base for holding the pipe flange; a first grinding disc located above the bolt holes of the pipe flange; and a second grinding disc located on the side of the pipe flange. In use, a drive mechanism simultaneously drives both grinding discs to rotate at high speed. Grinding disc one grinds the outer sealing surface of the flange bolt holes, removing burrs, unevenness, and other defects to ensure the flatness of the outer sealing surface. Grinding disc two grinds the side sealing surface of the flange, polishing the flange side end face to achieve the required precision for fitting with the pipe or equipment.

Description

Technical Field

[0001] This invention relates to the field of pipe flange processing equipment technology, and in particular to a precision processing equipment for pipe flange sealing surfaces. Background Technology

[0002] In actual working conditions, pipeline flanges need to withstand complex environments such as high pressure, high temperature, and corrosive media. If there are scratches, unevenness, or dimensional deviations on the sealing surface, it is very easy to cause media leakage and safety accidents. Therefore, it is necessary to perform precision machining on the sealing surface of the pipeline flange. At present, most grinding devices achieve flange grinding by rotating the rotating part and rubbing it against the flange surface.

[0003] For example, Chinese patent application number CN202111419450.0 discloses an intelligent grinding device for pipeline flanges based on casting pressure compensation, including a base, a pressure sensor fixedly installed on the top of the base, a work platform fixedly installed on the top of the pressure sensor, a flange provided on the top of the work platform, a feed block slidably connected to the top of the base, a tool changer connected to the bottom of the feed block by a bearing, and a grinding head fixedly connected to the bottom of the tool changer. It has the characteristics of automatic pressure compensation and automatic adjustment of the grinding fluid flow rate according to the rotation speed. However, the flatness and precision of the flange's external sealing surface, which serves as an auxiliary sealing structure in the bolted connection area, directly affect the sealing performance after bolt tightening. If the external sealing surface has unevenness, burrs, or other issues, it can lead to uneven bolt stress, resulting in gaps and media leakage. Furthermore, insufficient machining precision on the flange side face, which is the contact surface with the pipeline or equipment, can also lead to a loose fit and leave potential sealing hazards. Existing technology can only process the main sealing surface of the pipeline flange. It cannot effectively grind the auxiliary sealing area outside the flange bolt holes, i.e., the external sealing surface and the flange side face in contact with the pipeline or equipment, thus failing to meet the high precision requirements of industrial production for pipeline flange sealing. Summary of the Invention

[0004] In view of this, the purpose of this invention is to provide a precision machining equipment for the sealing surface of a pipe flange, so as to solve the technical problem that the existing technology can only process the main sealing surface of the pipe flange, and cannot effectively grind the auxiliary sealing area outside the flange bolt hole, that is, the sealing surface outside the hole and the flange side end face in contact with the pipe or equipment.

[0005] To achieve the above objectives, the present invention provides a precision machining equipment for pipe flange sealing surfaces, comprising a base and a rotating worktable mounted on the base. A support frame is provided in the middle of the base, and multiple guide frames are arranged around the outer perimeter of the support frame. A lifting seat is slidably mounted on the guide frames. The precision machining equipment further includes:

[0006] Mounting base provided on the workbench;

[0007] A clamping mechanism for clamping pipe flanges is provided on the mounting base;

[0008] A grinding disc located above the bolt holes of the pipe flange;

[0009] Grinding disc two is located on the side of the pipe flange;

[0010] A drive mechanism for driving the first and second grinding discs to grind the sealing surface and side sealing surface of the pipe flange, respectively.

[0011] Furthermore, the lifting seat is provided with an inverted plate, and an adjustment groove is provided at the bottom of the inverted plate.

[0012] Furthermore, an air guide plate is provided between the top of the C-shaped substrate and the lifting seat, and a blower is installed on the air guide plate, with the blower's air outlet direction facing the lower opening of the C-shaped substrate.

[0013] Furthermore, the clamping mechanism includes:

[0014] A fixing seat is provided on the mounting base, and a locking wrench is threaded on the side end of the fixing seat;

[0015] Rotate the flip seat one that is mounted on the fixed seat, and the top of the locking wrench abuts against the flip seat one. The side end of the flip seat one is also threaded with a locking wrench.

[0016] Rotate the second rotating seat provided on the first rotating seat, the rotating direction of the second rotating seat is perpendicular to the rotating direction of the first rotating seat, and the top of the locking wrench abuts against the second rotating seat;

[0017] A chuck is provided on the second flip seat, and a pipe flange is installed on the chuck.

[0018] Furthermore, both the first and second flip seats have scale lines on their side ends.

[0019] Furthermore, the mounting base is provided with mounting grooves in both the horizontal and vertical directions, and the bottom of the fixing base is adjustablely positioned within the mounting grooves by bolts.

[0020] Furthermore, the drive mechanism includes:

[0021] The drive motor is mounted on the lifting seat;

[0022] Rotate the threaded rod provided on the support frame;

[0023] A slider is threadedly mounted on the threaded rod, and the slider is rotatably connected to the lifting seat;

[0024] The drive wheel is located at the output end of the drive motor;

[0025] A driven wheel assembly is provided on the lifting seat. The driven wheel assembly meshes with the driving wheel. The lower end of the driven wheel assembly is connected to the grinding disc via a universal joint.

[0026] A second driven wheel assembly is provided on the lifting seat, the second driven wheel assembly meshing with the first driven wheel assembly, and the second driven wheel assembly being connected to the second grinding disc via a rotating shaft;

[0027] A driven wheel three is provided on the threaded rod, and the driven wheel three meshes with the driven wheel group two.

[0028] Furthermore, the lower part of the universal joint is provided with an adjusting ring, which is adjustable in the adjusting groove by means of bolts.

[0029] Furthermore, the middle part of the grinding disc is a raised shaft-shaped structure, and the outer diameter of the raised shaft-shaped structure matches the diameter of the bolt hole of the pipe flange.

[0030] Furthermore, the grinding surface of the first grinding disc covers the outer sealing surface of the flange bolt hole, and the outer edge of the second grinding disc mates with the side sealing surface of the flange.

[0031] The beneficial effects of this invention are as follows: In use, the driving mechanism simultaneously drives grinding disc one and grinding disc two to start rotating at high speed. Grinding disc one grinds the outer sealing surface of the flange bolt hole to remove burrs, unevenness and other defects, ensuring the flatness of the outer sealing surface. Grinding disc two grinds the side sealing surface of the flange side to polish the flange side end face to achieve the precision requirements for fitting with the pipe or equipment. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a three-dimensional illustration of the present invention. Figure 1 ;

[0034] Figure 2 This is a three-dimensional illustration of the present invention. Figure 2 ;

[0035] Figure 3 This is a three-dimensional illustration of the present invention. Figure 3 ;

[0036] Figure 4 This is a three-dimensional illustration of the present invention. Figure 4 ;

[0037] Figure 5 This is a three-dimensional illustration of the present invention. Figure 5 .

[0038] The diagram is marked as follows:

[0039] 1. Base; 2. Worktable; 3. Support frame; 4. Guide frame; 5. Lifting seat; 6. Mounting seat; 7. Grinding disc one; 8. Grinding disc two; 9. C-shaped base plate; 10. Adjustment groove; 11. Air guide plate; 12. Blower; 13. Fixed seat; 14. Tilting seat one; 15. Tilting seat two; 16. Chuck; 17. Mounting groove; 18. Drive motor; 19. Threaded rod; 20. Slider; 21. Drive wheel; 22. Driven wheel group one; 23. Universal joint; 24. Driven wheel group two; 25. Rotating shaft; 26. Driven wheel three; 27. Adjusting ring. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0041] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] In a first aspect, the present invention provides a precision machining device for pipe flange sealing surfaces, such as... Figures 1-5 As shown, the equipment includes a base 1 and a rotating worktable 2 mounted on the base 1. A support frame 3 is provided in the middle of the base 1, and multiple guide frames 4 are provided around the outer side of the support frame 3. A lifting seat 5 is slidably mounted on the guide frame 4. The precision machining equipment also includes:

[0043] Mounting base 6 is provided on the workbench 2;

[0044] A clamping mechanism for clamping pipe flanges is provided on the mounting base 6;

[0045] Grinding disc 7 is located above the bolt holes of the pipe flange;

[0046] Grinding disc 28 is located on the side of the pipe flange;

[0047] A drive mechanism for driving grinding disc 7 and grinding disc 8 to grind the sealing surface and side sealing surface of the pipe flange, respectively.

[0048] In this embodiment, during use, the clamping mechanism is first adjusted so that grinding disc 7 is aligned with the outer sealing surface above the flange bolt hole, and grinding disc 8 is aligned with the side of the pipe flange. The rotating worktable 2 is started, driving the mounting base 6 and the clamped flange to rotate synchronously and uniformly. The drive mechanism is started, and the drive mechanism simultaneously drives grinding disc 7 and grinding disc 8 to start rotating at high speed. Grinding disc 7 grinds the outer sealing surface of the flange bolt hole to remove burrs, unevenness, and other defects, ensuring the flatness of the outer sealing surface. Grinding disc 8 grinds the side sealing surface of the flange side, polishing the flange side end face to achieve the precision requirements for fitting with the pipe or equipment.

[0049] Under the continuous drive of the drive mechanism, grinding disc 7 and grinding disc 8 maintain high-speed rotation. At the same time, the rotating worktable 2 drives the flange to rotate at a uniform speed, so that the outer sealing surface and side sealing surface of the flange hole can be ground by the two grinding discs in a comprehensive and uniform manner, avoiding the occurrence of processing dead corners. During this period, multiple guide frames 4 continuously ensure the stability of the lifting seat 5, prevent the lifting seat from shaking and causing the grinding disc to shift, and ensure accurate processing position.

[0050] After the flange's outer sealing surface and side sealing surface are ground to the preset accuracy, the drive mechanism is turned off, and grinding disc 7 and grinding disc 8 stop rotating; the self-rotating worktable 2 is turned off, and the lifting seat 5 is adjusted to rise along the guide frame 4 so that the two grinding discs are completely separated from the flange; the clamping mechanism is released, the processed flange is taken out, and a complete processing cycle is completed. The equipment is restored to its initial state and the next flange can be processed.

[0051] In this embodiment, as Figure 3 , Figure 4 As shown, the lifting base 5 is provided with an inverted plate 9, and the bottom of the inverted plate 9 is provided with an adjustment groove 10, which is used to adjust the position of each grinding disc 7 as needed, so that the grinding disc 7 can be accurately aligned with the bolt holes of the pipe flange, and adapt to the bolt hole position requirements of different flange specifications.

[0052] In this embodiment, as Figure 4As shown, an air guide plate 11 is provided between the top of the C-shaped substrate 9 and the lifting seat 5. A blower 12 is installed on the air guide plate 11. The air outlet of the blower 12 is directed towards the lower opening of the C-shaped substrate 9. During the processing, the blower 12 blows air continuously, which can promptly blow away the metal chips generated during grinding from the sealing surface and the grinding disc, avoiding scratches on the sealing surface and wear on the grinding disc caused by chip adhesion. At the same time, it can reduce the temperature of the processing area and reduce the deformation of the sealing surface caused by high temperature during the grinding process.

[0053] In this embodiment, as Figure 1 , Figure 2 As shown, the clamping mechanism includes:

[0054] A fixing seat 13 is provided on the mounting base 6, and a locking wrench is provided on the side thread of the fixing seat 13;

[0055] Rotate the flip seat 14 which is mounted on the fixed seat 13, and the top of the locking wrench abuts against the flip seat 14. The side end of the flip seat 14 is also threaded with a locking wrench.

[0056] Rotate the second flip seat 15 located on the first flip seat 14. The flipping direction of the second flip seat 15 is perpendicular to the flipping direction of the first flip seat 14. The top of the locking wrench abuts against the second flip seat 15.

[0057] The chuck 16 is located on the flip seat 2 15. The pipe flange is installed on the chuck 16. The chuck 16 is a three-jaw chuck or a four-jaw chuck. The clamping range can be flexibly adjusted according to the size of the flange to ensure that the flange is firmly clamped and to avoid shaking during the processing.

[0058] In this embodiment, as Figure 2 As shown, both the first flip seat 14 and the second flip seat 15 have scale lines on their sides, which makes it easy for operators to accurately adjust the rotation angle of the first flip seat 14 and the second flip seat 15, thereby adjusting the installation angle of the flange so that the sealing surface of the flange can be accurately aligned with the first grinding disc 7 and the second grinding disc 8, ensuring machining accuracy.

[0059] In this embodiment, as Figure 3 As shown, the mounting base 6 has a horizontal and vertical mounting groove 17. The bottom of the fixing base 13 is adjustable in the mounting groove 17 by bolts, so that the fixing base 13 can be moved and adjusted in both horizontal and vertical directions, thereby adjusting the horizontal position of the flange, so that the bolt holes and side sealing surfaces of the flange can be accurately aligned with the grinding disc 7 and the grinding disc 8, adapting to the processing of flanges of different specifications and positions.

[0060] In this embodiment, as Figure 5 As shown, the drive mechanism includes:

[0061] A drive motor 18 is mounted on the lifting platform 5;

[0062] Rotate the threaded rod 19 mounted on the support frame 3;

[0063] A slider 20 is threadedly mounted on a threaded rod 19, and the slider 20 is rotatably connected to the lifting seat 5.

[0064] The drive wheel 21 is located at the output end of the drive motor 18;

[0065] A driven wheel assembly 22 is provided on the lifting seat 5. The driven wheel assembly 22 meshes with the driving wheel 21. The lower end of the driven wheel assembly 22 is connected to the grinding disc 7 through a universal joint 23.

[0066] A driven wheel assembly 24 is provided on the lifting seat 5. The driven wheel assembly 24 meshes with the driven wheel assembly 22. The driven wheel assembly 24 is connected to the grinding disc 8 through the rotating shaft 25.

[0067] Driven wheel 3 26 is provided on threaded rod 19, and driven wheel 3 26 meshes with driven wheel group 24;

[0068] Specifically, the output of the drive motor 18 drives the drive wheel 21 to rotate, which in turn drives the driven wheel assembly 22 to rotate, and then drives the grinding disc 7 to rotate through the universal joint 23, thereby achieving the grinding of the sealing surface on the flange. The driven wheel assembly 24 meshes with the driven wheel assembly 22 and is connected to the grinding disc 8 through the rotating shaft 25. The driven wheel assembly 22 drives the driven wheel assembly 24 to rotate, and then drives the grinding disc 8 to rotate through the rotating shaft 25, thereby achieving the grinding of the sealing surface on the flange side. The driven wheel 3 26 meshes with the driven wheel assembly 24 and drives the driven wheel 3 26 to rotate, which in turn drives the threaded rod 19 to rotate, thereby achieving the automatic lifting of the lifting seat 5.

[0069] In this embodiment, as Figure 5 As shown, the lower part of the universal joint 23 is provided with an adjusting ring 27. The adjusting ring 27 is adjustable in the adjusting groove 10 by bolts, thereby adjusting the horizontal position of the grinding disc 7, so that the protruding shaft structure of the grinding disc 7 can be accurately inserted into the bolt hole of the flange, and at the same time, the grinding surface of the grinding disc 7 can fully cover the outer sealing surface of the flange hole, ensuring the comprehensiveness and accuracy of the processing.

[0070] In this embodiment, as Figure 5 As shown, the middle part of the grinding disc 7 is a raised shaft-shaped structure. The outer diameter of the raised shaft-shaped structure matches the diameter of the bolt hole of the pipe flange. During processing, the raised shaft-shaped structure is inserted into the bolt hole of the flange, which can position the grinding disc 7 and prevent the grinding disc 7 from shifting during the grinding process. At the same time, it can perform slight grinding on the inner wall of the bolt hole, so that the bolt hole and the sealing surface remain coaxial, further improving the sealing performance of the flange connection.

[0071] In this embodiment, as Figure 5As shown, the grinding surface of grinding disc 7 covers the outer sealing surface of the flange bolt hole, ensuring that the outer sealing surface of the flange hole can be ground and formed in one go without multiple processing. The outer edge of grinding disc 8 matches the side sealing surface of the flange, which can grind the flange side sealing surface in its entirety, ensuring the flatness and accuracy of the side sealing surface and avoiding sealing leakage caused by incomplete processing of the side sealing surface.

[0072] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention includes the claims being limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

[0073] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A precision machining equipment for pipe flange sealing surfaces, comprising a base (1) and a rotating worktable (2) disposed on the base (1), wherein a support frame (3) is provided in the middle of the base (1), characterized in that, The outer ring of the support frame (3) is provided with multiple guide frames (4), and a lifting seat (5) is slidably provided on the guide frame (4). The precision machining equipment also includes: Mounting base (6) provided on the workbench (2); A clamping mechanism for clamping pipe flanges is provided on the mounting base (6); Grinding disc 1 (7) is located above the bolt holes of the pipe flange. Grinding disc 2 (8) located on the side of the pipe flange; A drive mechanism for driving the first grinding disc (7) and the second grinding disc (8) to grind the sealing surface and the side sealing surface of the pipe flange respectively.

2. The precision machining equipment for pipe flange sealing surfaces according to claim 1, characterized in that, The lifting seat (5) is provided with an incline base plate (9), and the bottom of the incline base plate (9) is provided with an adjustment groove (10).

3. The precision machining equipment for pipe flange sealing surfaces according to claim 2, characterized in that, A guide plate (11) is provided between the top of the shaped substrate (9) and the lifting seat (5). A blower (12) is installed on the guide plate (11), and the blower (12) is directed to the lower end opening of the shaped substrate (9).

4. The precision machining equipment for pipe flange sealing surfaces according to claim 1, characterized in that, The clamping mechanism includes: A fixing seat (13) is provided on the mounting base (6), and a locking wrench is provided on the side thread of the fixing seat (13); Rotate the flip seat (14) provided on the fixed seat (13), and the top of the locking wrench abuts against the flip seat (14). The side end of the flip seat (14) is also threaded with a locking wrench. Rotate the second flip seat (15) on the first flip seat (14), the flip direction of the second flip seat (15) is perpendicular to the flip direction of the first flip seat (14), and the top of the locking wrench abuts against the second flip seat (15). A chuck (16) is provided on the flip seat (15), and a pipe flange is installed on the chuck (16).

5. The precision machining equipment for pipe flange sealing surfaces according to claim 4, characterized in that, Both the first flip seat (14) and the second flip seat (15) have scale lines on their sides.

6. The precision machining equipment for pipe flange sealing surfaces according to claim 4, characterized in that, The mounting base (6) has a horizontal and vertical mounting groove (17), and the bottom of the fixing base (13) is adjustablely located in the mounting groove (17) by bolts.

7. The precision machining equipment for pipe flange sealing surfaces according to claim 2, characterized in that, The drive mechanism includes: A drive motor (18) is mounted on the lifting seat (5); Rotate the threaded rod (19) mounted on the support frame (3). A slider (20) is threaded onto the threaded rod (19), and the slider (20) is rotatably connected to the lifting seat (5); The drive wheel (21) is located at the output end of the drive motor (18). A driven wheel assembly (22) is provided on the lifting seat (5). The driven wheel assembly (22) meshes with the driving wheel (21). The lower end of the driven wheel assembly (22) is connected to the grinding disc (7) through a universal joint (23). A second driven wheel assembly (24) is provided on the lifting seat (5), the second driven wheel assembly (24) meshes with the first driven wheel assembly (22), and the second driven wheel assembly (24) is connected to the second grinding disc (8) through a rotating shaft (25); A driven wheel three (26) is provided on the threaded rod (19), and the driven wheel three (26) meshes with the driven wheel group two (24).

8. The precision machining equipment for pipe flange sealing surfaces according to claim 7, characterized in that, The lower part of the universal joint (23) is provided with an adjustment ring (27), which is adjustable in the adjustment groove (10) by means of bolts.

9. The precision machining equipment for pipe flange sealing surfaces according to claim 1, characterized in that, The middle part of the grinding disc (7) is a raised shaft-shaped structure, and the outer diameter of the raised shaft-shaped structure matches the diameter of the bolt hole of the pipe flange.

10. A precision machining equipment for pipe flange sealing surfaces according to claim 1, characterized in that, The grinding surface of the first grinding disc (7) covers the outer sealing surface of the flange bolt hole, and the outer edge of the second grinding disc (8) matches the side sealing surface of the flange.

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