A pipe flange sealing surface grinding device

Abstract

A pipe flange sealing surface grinding device includes a guide rail device, a sliding support device connected to the guide rail device, and a transmission pressure rod device connected to the sliding support device. The guide rail device includes a first guide rail and a second guide rail, with a set of clamping mechanisms at one end of each of the first and second guide rails. The sliding support device includes a fixed support plate, a transmission support plate, and a slider mechanism, with the slider mechanism connected to the fixed support plate and the transmission support plate. The transmission pressure rod device includes a transmission pressure rod and a handle connected to the transmission pressure rod. One end of the transmission pressure rod is connected to the handle, and the other end abuts against the tail of the grinding gun. This device improves the work efficiency of operators and reduces their workload during the grinding of the conical sealing surface of the pipe flange.

Description

Technical Field

[0001] This application relates to the technical field of grinding devices, and in particular to a grinding device for the sealing surface of a pipe flange. Background Technology

[0002] In petrochemical enterprises, high-temperature and high-pressure pipelines are ubiquitous in many processes, thus placing high demands on pipeline materials, installation, and maintenance. This is especially true for the connection between two flanges. If the contact area of ​​the sealing surfaces between the two flanges does not meet the strength requirements of the pipeline, leakage is highly likely. Once a high-temperature and high-pressure medium leaks, it can cause irreparable damage to surrounding personnel and machinery. In high-pressure pipeline connections, the most widely used sealing method is the lens gasket. The sealing surface of the lens gasket is generally spherical, contacting the conical surface of the pipeline. Under pre-tightening force, because the sealing surface is in direct contact with the conical surface, indentations are easily formed during the forced sealing process of the lens gasket, resulting in poor sealing. Therefore, the conical sealing surface of the pipeline flange needs to be ground.

[0003] Existing technology for grinding the conical sealing surface of pipe flanges usually uses a grinding machine to grind in place to increase the contact area of ​​the sealing surface. However, the in-place grinding method connects the grinding head to the grinding gun and grinds by hand.

[0004] However, in the actual grinding process, since it is necessary to continuously apply a certain pressure to the grinding gun manually to ensure the grinding quality, it requires a high level of skill from the operator and flexibility in using the grinding gun. Moreover, the grinding time is generally from half an hour to several hours. Holding the grinding gun for a long time can easily cause fatigue for the operator and result in low work efficiency. Utility Model Content

[0005] This utility model provides a pipe flange sealing surface grinding device, which improves the work efficiency of operators and reduces the work intensity of operators during the grinding process of the conical sealing surface of the pipe flange.

[0006] To achieve the aforementioned objectives, this application adopts the following technical solution:

[0007] A device for grinding the sealing surface of a pipe flange, characterized in that it includes:

[0008] The guide rail device includes a first guide rail and a second guide rail. One end of the first guide rail and the second guide rail are respectively provided with a set of clamping mechanisms. The clamping mechanisms include a first clamp and a second clamp. A clamping space for clamping the edge of the pipe flange is formed between the first clamp and the second clamp.

[0009] A sliding support device connected to a guide rail device, the sliding support device includes a fixed support plate, a transmission support plate and a slider mechanism, and the slider mechanism is connected to the fixed support plate and the transmission support plate.

[0010] A transmission pressure rod device connected to a sliding support device includes a transmission pressure rod and a handle connected to the transmission pressure rod. One end of the transmission pressure rod is connected to the handle, and the other end abuts against the tail of the grinding gun.

[0011] In some alternative implementations, the first guide rail and the second guide rail are arranged symmetrically.

[0012] In some alternative implementations, the fixed support plate is located close to the clamping mechanism.

[0013] In some alternative implementations, the guide rail cooperates with the slider mechanism, which includes two sets of slider assemblies, one set of slider assemblies connected to a fixed support plate and the other set of slider assemblies connected to a transmission support plate.

[0014] In some alternative embodiments, the slider assembly includes two positioning slider mechanisms. The two positioning slider mechanisms in the slider assembly connected to the fixed support plate are respectively connected to the opposite side walls of the fixed support plate, and the two positioning slider mechanisms in the slider assembly connected to the transmission support plate are respectively connected to the opposite side walls of the transmission support plate.

[0015] In some alternative implementations, the grinding gun is fixed to a fixed support plate, and a grinding disc is attached to the head of the grinding gun and faces the pipe flange.

[0016] In some alternative implementations, both the fixed support plate and the transmission support plate are connected to the slider mechanism.

[0017] In some optional embodiments, bolt holes are provided on the fixed support plate, the transmission support plate, and the positioning slider mechanism. The fixed support plate and the transmission support plate are connected to the positioning slider mechanism by bolting through the bolt holes and bolts.

[0018] In some optional embodiments, a pad is provided between the transmission pressure rod and the grinding gun, and the distance from the positioning slider mechanism connected to the fixed support plate to the center of the fixed support plate and the distance from the positioning slider mechanism connected to the transmission support plate to the center of the transmission support plate are the same as the center distance of the pipe flange.

[0019] The pipe flange sealing surface grinding device provided in this application has the following beneficial effects:

[0020] The technical solution adopted in this application includes a pipe flange sealing surface grinding device, comprising a guide rail device, a sliding support device connected to the guide rail device, and a transmission pressure rod device connected to the sliding support device. The guide rail device includes a first guide rail and a second guide rail, with a clamping mechanism at one end of each of the first and second guide rails. The sliding support device includes a fixed support plate, a transmission support plate, and a slider mechanism, with the slider mechanism connected to the fixed support plate and the transmission support plate. The transmission pressure rod device includes a transmission pressure rod and a handle connected to the transmission pressure rod, with one end of the transmission pressure rod connected to the handle and the other end abutting against the tail of the grinding gun. This improves the work efficiency of operators and reduces their workload during the grinding of the conical sealing surface of the pipe flange. Attached Figure Description

[0021] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the structure of a pipe flange sealing surface grinding device according to this application;

[0023] Figure 2 This is a structural schematic diagram from another perspective of the pipe flange sealing surface grinding device of this application.

[0024] Figure label:

[0025] 10. Guide rail device; 11. First guide rail; 12. Second guide rail; 13. Clamping mechanism; 13A. Clamping space; 14. First clamp; 15. Second clamp;

[0026] 20. Sliding support device; 21. Fixed support plate; 22. Transmission support plate; 23. Slider mechanism; 24. Slider assembly; 25. Positioning slider mechanism; 26. Set bolt;

[0027] 30. Transmission pressure rod device; 31. Transmission pressure rod; 32. Handle; 33. Pad block;

[0028] 40. Grinding gun; 41. Grinding disc; 42. Pipe flange; 43. Reinforcing device; 44. Reinforcing plate; 45. Reinforcing clamp. Detailed Implementation

[0029] The specific embodiments of this application are described below with reference to the accompanying drawings and examples. Through the content described in this specification, those skilled in the art can clearly and completely understand the technical solution, the technical problem solved, and the resulting technical effects of this application. It is understood that the specific embodiments described herein are only for explaining this application and not for limiting it. Furthermore, for ease of description, only the parts related to this application are shown in the accompanying drawings.

[0030] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the contents described in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size should fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0031] The use of terms such as "first," "second," and "the" does not imply quantity limitation and may indicate singular or plural. The terms "comprising," "including," "having," and any variations thereof used in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or modules is not limited to the listed steps or units, but may also include steps or units not listed, or other steps or units inherent to such processes, methods, products, or devices. The terms "connected," "linked," and "coupled" used in this application are not limited to physical or mechanical connections, but may also include direct or indirect electrical connections.

[0032] It should also be noted that the longitudinal section corresponding to the embodiment of this application can be the section corresponding to the front view direction, the transverse section can be the section corresponding to the right view direction, and the horizontal section can be the section corresponding to the top view direction.

[0033] Furthermore, where there is no conflict, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] A pipe flange sealing surface grinding device includes a guide rail device 10, a sliding support device 20 connected to the guide rail device 10, and a transmission pressure rod device 31 connected to the sliding support device 20. The guide rail device 10 includes a first guide rail 11 and a second guide rail 12. One end of the first guide rail 11 and the second guide rail 12 is respectively provided with a set of clamping mechanisms 13. The clamping mechanism 13 includes a first clamp 14 and a second clamp 15. A clamping space 13A is formed between the first clamp 14 and the second clamp 15 to clamp the edge of the pipe flange 42, so that the first guide rail 11 and the second guide rail 12 respectively pass through the pipe flange 42 and clamp the pipe flange 42 through the first clamp 14 and the second clamp 15, thereby fixing the grinding device on the pipe flange 42. It should be noted that the first guide rail 11 and the second guide rail 12 are symmetrically arranged.

[0035] The sliding support device 20 includes a fixed support plate 21, a transmission support plate 22, and a slider mechanism 23. The slider mechanism 23 is connected to the fixed support plate 21 and the transmission support plate 22 to achieve positioning and locking of the fixed support plate 21 and the transmission support plate 22 on the first guide rail 11 and the second guide rail 12. This achieves the positioning and locking of the grinding machine, effectively reducing structural complexity and improving operational convenience and work efficiency. Specifically, the fixed support plate 21 is close to the clamping mechanism 13, and the slider mechanism 23 includes two sets of slider assemblies 24. 4 is connected to the fixed support plate 21, and another set of slider assemblies 24 is connected to the transmission support plate 22. The slider assembly 24 includes two positioning slider mechanisms 25. The two positioning slider mechanisms 25 in the slider assembly 24 connected to the fixed support plate 21 are respectively connected to the opposite side walls of the fixed support plate 21. The two positioning slider mechanisms 25 in the slider assembly 24 connected to the transmission support plate 22 are respectively connected to the opposite side walls of the transmission support plate 22. The grinding gun 40 is fixed on the fixed support plate 21, and the head of the grinding gun 40 is connected to a grinding disc 41 facing the pipe flange 42. Here, bolt holes are provided on the fixed support plate 21, the transmission support plate 22, and the positioning slider mechanism 25. The fixed support plate 21 and the transmission support plate 22 are connected to the positioning slider mechanism 25 by bolting through the bolt holes. The fixed support plate 21 is used to fix the grinding gun 40, and the transmission support plate 22 is used to abut the grinding gun 40. This connection method is convenient to assemble and disassemble, has a simple structure, and low production cost. Furthermore, the guide rail cooperates with the slider mechanism 23, and the fixed support plate 21 and the transmission support plate 22 are both connected to the slider mechanism 23. This allows the fixed support plate 21 and the transmission support plate 22 to move along the guide rail through the slider mechanism 23. After sliding, the fixed support plate 21 and the transmission support plate 22 are abutted against each other by the set bolts 26 installed on the slider mechanism 23, thus achieving the positioning of the fixed support plate 21 and the transmission support plate 22.

[0036] The transmission pressure rod 31 device 30 includes a transmission pressure rod 31 and a handle 32 connected to the transmission pressure rod 31. Specifically, one end of the transmission pressure rod 31 is connected to the handle 32, and the other end abuts against the tail of the grinding gun 40. This allows the transmission pressure rod 31 to rotate by rotating the handle 32, thus applying appropriate pressure to the grinding gun 40. This effectively eliminates the problem of machine vibration during the grinding process and improves stability. Furthermore, a pad 33 is provided between the transmission pressure rod 31 and the grinding gun 40. In addition, the transmission pressure rod device 30 is combined with the transmission support plate 22 to form the transmission support plate 22 assembly. The distance from the positioning slider mechanism 25 connected to the fixed support plate 21 to the center of the fixed support plate 21 and the distance from the positioning slider mechanism 25 connected to the transmission support plate 22 to the center of the transmission support plate 22 are the same as the center distance of the pipe flange 42. This enables the fixed support plate 21 and the transmission support plate 22 to move smoothly relative to the guide rail during the position adjustment of the grinding gun 40 through the mutual cooperation between the slider and the guide rail, and provides good guidance.

[0037] Here, the pipe flange sealing surface grinding device includes a guide rail device 10, a sliding support device 20 connected to the guide rail device 10, and a transmission pressure rod device 30 connected to the sliding support device 20. The guide rail device 10 includes a first guide rail 11 and a second guide rail 12, with a clamping mechanism 13 at one end of each of the first guide rail 11 and the second guide rail 12. The sliding support device 20 includes a fixed support plate 21, a transmission support plate 22, and a slider mechanism 23. The slider mechanism 23 is connected to the fixed support plate 21 and the transmission support plate 22. The transmission pressure rod device 30 includes a transmission pressure rod 31 and a handle 32 connected to the transmission pressure rod 31. One end of the transmission pressure rod 31 is connected to the handle 32, and the other end abuts against the tail of the grinding gun 40. This improves the work efficiency of the operator during the grinding of the conical sealing surface of the pipe flange 42. This invention reduces the workload of operators, ensures grinding quality and flatness of the sealing surface, saves labor costs, and improves grinding efficiency. Furthermore, the grinding device of this application eliminates the need to disassemble the flange during grinding of the pipe flange 42, allowing for direct on-site grinding and saving significant time. For grinding pipe flanges 42 of different diameters, appropriate specifications of fixed support plate 21, transmission support plate 22, and clamping mechanism 13 are selected, enabling grinding of the sealing surfaces of pipe flanges 42 of different diameters, thus achieving the repair of the sealing surfaces of lens gasket flanges of different diameters. The guide rail device 10 guides the grinding device during use, allowing the grinding machine to directly grind the sealing surface of the flange, and the transmission pressure rod 31 applies appropriate pressure to the grinding gun 40 to avoid vibration during grinding.

[0038] To facilitate understanding, the working principle of this application is further described as follows: In daily use, the pipe flange 42 is clamped inside the clamping space 13A and secured by the first clamp 14 and the second clamp 15. The grinding gun 40 is placed on the fixed support plate 21 and fixed with bolts (not shown in the figure). The position of the fixed support plate 21 is adjusted so that the grinding disc 41 at the head of the grinding gun 40 is tightly against the flange opening. A pad 33 is placed at the tail of the grinding gun 40, and the position of the fastening support plate is adjusted so that the tail of the grinding gun 40 is tightly against the transmission pressure rod 31, effectively pressing the grinding disc 41 at the head of the grinding gun 40 against the flange opening. Simultaneously, the fixed support plate 21 and the transmission support plate 22 are fixed to the guide rail via the positioning slider mechanism 25. The transmission pressure rod 31 is rotated by the handle 32, causing the grinding gun 40 to press tightly against the flange opening. It should be noted that the rotation method... Including but not limited to clockwise or counterclockwise rotation, which can be adjusted according to the actual on-site usage; then, the grinding gun 40 is connected to the air source and starts to grind the sealing surface of the pipe flange 42. During the grinding process, the operation is stopped at intervals, the positioning slider mechanism 25 is released, the grinding disc 41 is removed, and it is checked whether the sandpaper on the grinding disc 41 can continue grinding or whether it needs to be replaced. At the same time, the flange after grinding is measured with external tools to see if it meets the usage requirements. If it does not meet the requirements, it is re-fixed and ground again until it meets the usage requirements and can seal tightly with the sealing surface of the lens gasket. This effectively saves labor costs. When batch processing, it avoids the situation where one person can only grind one flange opening during manual grinding. After tooling, one person can control several grinding devices at the same time, saving a lot of manpower, effectively reducing the workload of operators, and improving work efficiency.

[0039] Furthermore, the rear end of the guide rail device 10 is connected to the reinforcement device 43, which further enhances the stability of the overall structure of the grinding device. In addition, the reinforcement device 43 includes a reinforcement plate 44 and a reinforcement clamp 45 connected to the reinforcement plate 44.

[0040] Although this application has been described and illustrated with reference to specific embodiments thereof, such description and illustration are not limiting of this application. It will be readily understood by those skilled in the art that various changes can be made and equivalent elements can be substituted within embodiments without departing from the true spirit and scope of this application as defined by the appended claims. Illustrations may not be drawn to scale. Differences may exist between the technical representation in this application and actual implementation due to variables in the manufacturing process, etc. Other embodiments of this application may exist that are not specifically described. The description and illustrations should be considered illustrative rather than restrictive. Modifications can be made to adapt particular circumstances, materials, composition, methods, or processes to the objectives, spirit, and scope of this application. All such modifications fall within the scope of the appended claims. While the methods disclosed herein have been described with reference to specific operations performed in a particular order, it should be understood that these operations can be combined, subdivided, or reordered to form equivalent methods without departing from the teachings of this application. Therefore, unless specifically indicated herein, the order and grouping of operations do not limit this application.

Claims

1. A device for grinding the sealing surface of a pipe flange, characterized in that, include The guide rail device includes a first guide rail and a second guide rail. One end of the first guide rail and the second guide rail are respectively provided with a set of clamping mechanisms. The clamping mechanisms include a first clamp and a second clamp. A clamping space for clamping the edge of the pipe flange is formed between the first clamp and the second clamp. A sliding support device connected to a guide rail device, the sliding support device includes a fixed support plate, a transmission support plate and a slider mechanism, and the slider mechanism is connected to the fixed support plate and the transmission support plate. A transmission pressure rod device connected to a sliding support device includes a transmission pressure rod and a handle connected to the transmission pressure rod. One end of the transmission pressure rod is connected to the handle, and the other end abuts against the tail of the grinding gun.

2. The pipe flange sealing surface grinding device according to claim 1, characterized in that, The first and second guide rails are arranged symmetrically.

3. The pipe flange sealing surface grinding device according to claim 2, characterized in that, The fixed support plate is close to the clamp mechanism.

4. The pipe flange sealing surface grinding device according to claim 3, characterized in that, The guide rail and the slider mechanism work together. The slider mechanism includes two sets of slider assemblies. One set of slider assemblies is connected to the fixed support plate, and the other set of slider assemblies is connected to the transmission support plate.

5. The pipe flange sealing surface grinding device according to claim 4, characterized in that, The slider assembly includes two positioning slider mechanisms. The two positioning slider mechanisms in the slider assembly connected to the fixed support plate are respectively connected to the opposite side walls of the fixed support plate. The two positioning slider mechanisms in the slider assembly connected to the transmission support plate are respectively connected to the opposite side walls of the transmission support plate.

6. The pipe flange sealing surface grinding device according to claim 5, characterized in that, The grinding gun is fixed to the fixed support plate, and the head of the grinding gun is connected to the grinding disc and faces the pipe flange.

7. The pipe flange sealing surface grinding device according to claim 6, characterized in that, Both the fixed support plate and the transmission support plate are connected to the slider mechanism.

8. The pipe flange sealing surface grinding device according to claim 7, characterized in that, Bolt holes are provided on the fixed support plate, transmission support plate, and positioning slider mechanism. The fixed support plate and transmission support plate are connected to the positioning slider mechanism by bolting through the bolt holes and bolts.

9. The pipe flange sealing surface grinding device according to claim 8, characterized in that, A pad is provided between the transmission pressure rod and the grinding gun. The distance from the positioning slider mechanism connected to the fixed support plate to the center of the fixed support plate and the distance from the positioning slider mechanism connected to the transmission support plate to the center of the transmission support plate are the same as the center distance of the pipe flange.

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