Flange plate grinding mechanism and grinding device
Patent Information
- Application Number
- CN202522359705.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-06
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-11-06
AI Technical Summary
[0005]本实用新型针对现有技术中法兰打磨装置在打磨法兰时，较多碎屑、灰尘等进入到管道内的技术问题，提供了一种法兰盘研磨机构及研磨装置
[0016]本实用新型中，空心轴的一端安装在旋转驱动件的输出端，空心轴的另一端安装在转盘的第一轴孔中；转盘背离所述空心轴的一面周向间隔安装有多个磨盘；旋转驱动件可以通过所述空心轴和所述转盘带动多个所述磨盘旋转，所述磨盘可以在线打磨待检修管道的待研磨法兰（也即，磨盘可以打磨待研磨法兰的表面）。另外，转盘上还设有中心孔、多个吸附孔以及径向分布的多个汇流孔，所述中心孔连通所有所述汇流孔，每一个所述汇流孔均连通多个吸附；吸尘管的一端连通吸尘泵的进口，吸尘管的另一端穿过所述旋转驱动件的第一通孔和空心轴的第二通孔后连通所述中心孔，从而磨盘打磨待研磨法兰的过程中，所述吸附孔可以吸附打磨过程中所产生的灰尘、碎屑等杂质，避免了打磨过程中杂质进入到待研磨法兰的螺纹孔中，保证了该法兰盘研磨机构对待研磨法兰的打磨质量，并且该法兰盘研磨机构使用便捷、打磨效率高。
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Figure CN224855616U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of maintenance equipment technology, and in particular relates to a flange grinding mechanism and grinding device. Background Technology
[0002] In the installation of mechanical equipment in nuclear power plants, many flange connection structures are required. For example, the flange sealing surfaces (mostly metal C-rings or O-rings) between the pressure vessel top cover and the cylinder section need to achieve extremely high surface roughness (Ra≤0.8μm). Special grinding tools are required to grind and polish the flange surfaces to ensure that the flange sealing surfaces meet the surface roughness requirements and prevent sealing failure that could lead to radioactive leakage.
[0003] When assembling the equipment for the first time, a common flange grinding device can be used to grind and clean the flange surface before assembly and use. In this way, the roughness of the flange surface can be guaranteed, and the cleaned flange can also meet the requirements of nuclear power field (metal shavings or dust will be generated during the grinding process, and if they are not cleaned, they will not meet the safety standards for use in nuclear power field).
[0004] During flange maintenance or replacement, there is a significant need to grind flanges on-site without removing them. Traditional flange grinding equipment, being large and fixed devices, cannot adequately adapt to various flange grinding scenarios at workstations. Instead, flanges must be individually mounted on the grinding equipment for grinding. Furthermore, the debris and dust generated during on-site grinding cannot be cleaned using traditional post-grinding cleaning methods. If debris or dust falls into the pipes behind the ground flange during grinding, it poses a significant safety hazard in nuclear power applications. Summary of the Invention
[0005] This invention addresses the technical problem in existing flange grinding devices where a large amount of debris and dust enters the pipeline during flange grinding, by providing a flange grinding mechanism and grinding device.
[0006] In view of the above technical problems, this utility model provides a flange grinding mechanism, including a housing, a rotary drive, a dust pump, a dust suction pipe, a hollow shaft, a turntable, and a plurality of grinding discs, wherein the plurality of grinding discs are circumferentially spaced on the turntable; The turntable is provided with a first shaft hole, a central hole, multiple confluence holes, and multiple adsorption holes. The axis of the first shaft hole, the axis of the central hole, and the axis of the turntable coincide. The axis of the adsorption holes is parallel to the axis of the turntable. The confluence holes extend radially along the turntable. The central hole connects all the confluence holes, and each confluence hole connects to multiple adsorption holes. The outer casing has a receiving space, in which the dust pump and the rotary drive are both installed; one end of the hollow shaft is installed at the output end of the rotary drive, and the other end of the hollow shaft is installed in the first shaft hole; The rotary drive component is provided with a first through hole, and the hollow shaft is provided with a second through hole; One end of the suction pipe is installed at the inlet of the suction pump, and the other end of the suction pipe passes through the first through hole and the second through hole and is inserted into the central hole.
[0007] Optionally, the turntable is provided with a plurality of circumferentially spaced sliding grooves, and the flange grinding mechanism further includes a plurality of sliders, each slider being slidably mounted in the sliding groove, and the grinding disc being mounted on the slider.
[0008] Optionally, the flange grinding mechanism further includes a plurality of lead screws, which are rotatably mounted in the slide groove in a corresponding manner; Each of the sliders is provided with a threaded through hole, and the slider is threadedly connected to the lead screw through the threaded through hole.
[0009] Optionally, each of the lead screws is provided with a knob, which is located outside the slide groove.
[0010] Optionally, the flange grinding mechanism further includes flexible cover plates, which are installed one-to-one in the slide grooves and are used to seal the slide grooves.
[0011] Optionally, the housing is further provided with a dust outlet pipe, and the outlet of the dust pump is connected to the dust outlet pipe.
[0012] Optionally, the flange grinding mechanism further includes a plurality of plugs, each plug being inserted into the manifold hole in a corresponding manner, and the plugs being used to seal the end of the manifold hole away from the central hole.
[0013] Another embodiment of this utility model also provides a grinding device, including a dust cover and the above-mentioned flange grinding mechanism; The grinding disc is used to grind the flange of the pipeline to be repaired; the dust cover is installed in the inner hole of the pipeline to be repaired, and the dust cover is used to prevent foreign objects from entering the inner hole of the pipeline to be repaired.
[0014] Optionally, the dust cover includes a rigid disc and a flexible sleeve fitted onto the rigid disc; When the dust cover is installed in the inner hole of the pipe to be inspected, the end of the flexible sleeve away from the rigid disc abuts against the inner wall of the pipe to be inspected.
[0015] Optionally, the rigid disc body is provided with a handle.
[0016] In this invention, one end of the hollow shaft is installed at the output end of the rotary drive, and the other end of the hollow shaft is installed in the first shaft hole of the turntable; multiple grinding discs are circumferentially spaced on the side of the turntable away from the hollow shaft; the rotary drive can drive the multiple grinding discs to rotate through the hollow shaft and the turntable, and the grinding discs can grind the flanges to be ground on the pipeline to be inspected online (that is, the grinding discs can grind the surface of the flanges to be ground). In addition, the turntable is also provided with a central hole, multiple suction holes, and multiple radially distributed converging holes. The central hole connects to all the converging holes, and each converging hole connects to multiple suction holes. One end of the suction pipe is connected to the inlet of the suction pump, and the other end of the suction pipe passes through the first through hole of the rotary drive and the second through hole of the hollow shaft and then connects to the central hole. Thus, during the grinding process of the disc grinding the flange to be ground, the suction holes can adsorb the dust, debris and other impurities generated during the grinding process, preventing impurities from entering the threaded holes of the flange to be ground during the grinding process, ensuring the grinding quality of the flange to be ground by the flange grinding mechanism, and the flange grinding mechanism is convenient to use and has high grinding efficiency. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a cross-sectional view of a flange grinding mechanism provided in an embodiment of the present invention; Figure 2 This is a partial structural schematic diagram of a flange grinding mechanism provided in one embodiment of the present invention; Figure 3 This is a partial structural schematic diagram of a flange grinding mechanism provided in one embodiment of the present invention; Figure 4 This is a partially exploded structural diagram of a flange grinding mechanism provided in one embodiment of the present invention; Figure 5 This is a schematic diagram of a turntable provided in one embodiment of the present utility model; Figure 6 This is a cross-sectional view of the grinding device provided in one embodiment of the present invention grinding a flange to be ground; Figure 7 This is a schematic diagram of the structure of a dust cover provided in one embodiment of the present invention.
[0019] The reference numerals in the accompanying drawings are as follows: 1. Outer shell; 11. Accommodation space; 12. Dust outlet pipe; 2. Rotary drive component; 21. First through hole; 3. Dust pump; 4. Dust suction pipe; 5. Hollow shaft; 51. Second through hole; 6. Turntable; 61. First shaft hole; 62. Center hole; 63. Manifold hole; 64. Adsorption hole; 65. Slide groove; 66. Plug; 7. Grinding disc; 8. Slider; 81. Threaded through hole; 9. Lead screw; 91. Knob part; 10. Flexible cover plate; 20. Dust cover; 201. Rigid disc; 202. Flexible sleeve; 203. Handle; 300. Pipe to be inspected; 400. Flange to be ground. Detailed Implementation
[0020] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0021] like Figures 1 to 3 As shown, an embodiment of the present invention provides a flange grinding mechanism, including a housing 1, a rotary drive 2, a dust pump 3, a dust suction pipe 4, a hollow shaft 5, a turntable 6, and a plurality of grinding discs 7, wherein the plurality of grinding discs 7 are installed on the turntable 6 at circumferential intervals. The turntable 6 is provided with a first shaft hole 61, a central hole 62, a plurality of confluence holes 63 and a plurality of adsorption holes 64. The axis of the first shaft hole 61, the axis of the central hole 62 and the axis of the turntable 6 coincide. The axis of the adsorption hole 64 is parallel to the axis of the turntable 6. The confluence holes 63 extend radially along the turntable 6. The central hole 62 connects all the confluence holes 63, and each confluence hole 63 connects to a plurality of adsorption holes 64. The outer casing 1 is provided with a receiving space 11, in which the dust pump 3 and the rotary drive 2 are both installed; one end of the hollow shaft 5 is installed at the output end of the rotary drive 2, and the other end of the hollow shaft 5 is installed in the first shaft hole 61; The rotary drive component 2 is provided with a first through hole 21, and the hollow shaft 5 is provided with a second through hole 51; One end of the suction pipe 4 is installed at the inlet of the suction pump 3, and the other end of the suction pipe 4 passes through the first through hole 21 and the second through hole 51 and is inserted into the center hole 62.
[0022] The central hole 62 is positioned on the bottom wall of the first shaft hole 61, and the confluence hole 63 penetrates the turntable 6 radially. The adsorption hole 64 is located on the bottom surface of the turntable 6, the first shaft hole 61 is located on the top surface of the turntable 6, and the confluence hole 63 is located on the side surface of the turntable 6. The rotary drive component 2 includes, but is not limited to, a motor. The number of grinding discs 7 can be set according to actual needs.
[0023] In this invention, one end of the hollow shaft 5 is installed at the output end of the rotary drive 2, and the other end of the hollow shaft 5 is installed in the first shaft hole 61 of the turntable 6; a plurality of grinding discs 7 are circumferentially spaced on the side of the turntable 6 away from the hollow shaft 5; the rotary drive 2 can drive the plurality of grinding discs 7 to rotate through the hollow shaft 5 and the turntable 6, and the grinding discs 7 can grind the flange 400 of the pipeline 300 to be inspected online (that is, the grinding discs 7 can grind the surface of the flange 400 to be polished). In addition, the turntable 6 is also provided with a central hole 62, multiple adsorption holes 64 and multiple radially distributed confluence holes 63. The central hole 62 connects to all the confluence holes 63, and each confluence hole 63 connects to multiple adsorption holes. One end of the dust suction pipe 4 is connected to the inlet of the dust suction pump 3, and the other end of the dust suction pipe 4 passes through the first through hole 21 of the rotary drive component 2 and the second through hole 51 of the hollow shaft 5 and then connects to the central hole 62. Thus, during the grinding process of the grinding disc 7 grinding the flange 400 to be ground, the adsorption holes 64 can adsorb the dust, debris and other impurities generated during the grinding process, preventing impurities from entering the threaded holes of the flange 400 to be ground during the grinding process, ensuring the grinding quality of the flange 400 to be ground by the flange grinding mechanism, and the flange grinding mechanism is convenient to use and has high grinding efficiency.
[0024] In one embodiment, such as Figures 3 to 5 As shown, the turntable 6 is provided with a plurality of circumferentially spaced sliding grooves 65, and the flange grinding mechanism also includes a plurality of sliders 8, which are slidably installed in the sliding grooves 65 one by one, and the grinding discs 7 are installed on the sliders 8 one by one.
[0025] The number of the sliding grooves 65 is equal to the number of the grinding discs 7, and the openings of the sliding grooves 65 face downwards.
[0026] In this embodiment, the slider 8 is slidably installed in the groove 65 of the turntable 6, and the grinding disc 7 is installed on the slider 8. The distance between the grinding disc 7 and the center point of the turntable 6 can be adjusted by the slider 8, so that the grinding disc 7 can grind flanges 400 of different sizes, thereby improving the applicability and versatility of the flange grinding mechanism.
[0027] In one embodiment, such as Figures 3 to 5As shown, the flange grinding mechanism also includes a plurality of lead screws 9, which are rotatably mounted in the slide groove 65 in a one-to-one correspondence. Each slider 8 is provided with a threaded through hole 81, and the slider 8 is threadedly connected to the lead screw 9 through the threaded through hole 81.
[0028] The number of lead screws 9 is equal to the number of sliders 8. The lead screws 9 can be rotatably mounted in the slide groove 65 through the bearing. The slide groove 65 passes through the turntable 6.
[0029] In this embodiment, by rotating the lead screw 9, the slider 8 can be moved within the groove 65, thereby adjusting the distance between the center point of the grinding disc 7 and the turntable 6. In this embodiment, the position adjustment of the grinding disc 7 on the turntable 6 is convenient.
[0030] In one embodiment, such as Figure 3 and Figure 4 As shown, each of the lead screws 9 is provided with a knob part 91, which is located outside the slide groove 65.
[0031] The knob 91 is located on the side of the turntable 6, and the user can rotate the lead screw 9 through the knob 91, which improves the convenience of rotating the lead screw 9.
[0032] In one embodiment, such as Figure 3 and Figure 4 As shown, the flange grinding mechanism also includes a flexible cover plate 10, which is installed one-to-one in the slide groove 65 and is used to seal the slide groove 65.
[0033] The flexible cover plate 10 is a bent plate.
[0034] Specifically, during the sliding process of the slider 8 in the slide groove 65, the flexible cover plates 10 on both sides of the slider 8 will retract and expand, so that the flexible cover plates 10 are always in the state of sealing the slide groove 65, preventing dust, debris and other impurities from entering the slide groove 65, and ensuring the smooth rotation of the lead screw 9 in the slide groove 65.
[0035] In one embodiment, such as Figure 1 As shown, the outer casing 1 is also provided with a dust outlet pipe 12, and the outlet of the dust pump 3 is connected to the dust outlet pipe 12.
[0036] In this embodiment, the impurities sucked up by the vacuum pump 3 through the vacuum pipe 4 can be discharged through the dust outlet pipe 12.
[0037] In one embodiment, such as Figures 3 to 5 As shown, the flange grinding mechanism also includes a plurality of plugs 66, which are inserted one-to-one into the manifold 63, and the plugs 66 are used to seal the end of the manifold 63 away from the central hole 62.
[0038] In this embodiment, the manifold 63 penetrates the turntable 6, and the plug 66 can block the manifold 63 from the side, reducing the processing difficulty and cost of the turntable 6.
[0039] like Figure 5 and Figure 6 As shown, another embodiment of the present invention also provides a grinding device, including a dust cover 20 and the above-mentioned flange grinding mechanism; The grinding disc 7 is used to grind the flange 400 of the pipe 300 to be inspected; the dust cover 20 is installed in the inner hole of the pipe 300 to be inspected, and the dust cover 20 is used to prevent foreign objects from entering the inner hole of the pipe 300 to be inspected.
[0040] Specifically, during the process of the flange grinding mechanism grinding the flange 400 to be ground, the dust cover 20 is installed in the inner hole of the pipe 300 to be inspected, so that the dust cover 20 can prevent dust, debris and other impurities from entering the inner hole of the pipe 300 to be inspected, thus ensuring the cleanliness of the inner hole of the pipe 300 to be inspected.
[0041] In one embodiment, such as Figure 7 As shown, the dust cover 20 includes a rigid disc 201 and a flexible sleeve 202 sleeved on the rigid disc 201; When the dust cover 20 is installed in the inner hole of the pipe 300 to be inspected, the end of the flexible sleeve 202 away from the rigid disc 201 abuts against the inner wall of the pipe 300 to be inspected.
[0042] The rigid disc 201 can be made of stainless steel, and the flexible sleeve 202 can be a cotton sleeve, silicone sleeve, etc.
[0043] In this embodiment, the flexible sleeve 202 is in flexible contact with the inner wall of the pipe 300 to be inspected, ensuring the sealing performance of the dust cover 20 in sealing the pipe 300 to be inspected. In addition, different sizes of flexible sleeves 202 can be replaced on the rigid disc 201 according to the pipe 300 to be inspected with different inner diameters, so that the dust cover 20 can seal pipes 300 to be inspected with different inner diameters, improving the applicability and versatility of the dust cover 20.
[0044] In one embodiment, such as Figure 7 As shown, the rigid disc 201 is provided with a handle 203.
[0045] In this embodiment, the handle 203 is designed to facilitate the installation of the dust cover 20 in the inner hole of the pipe 300 to be inspected.
[0046] In this application, unless otherwise expressly defined, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0047] The terms “first,” “second,” “third,” “fourth,” etc., in this application (if present) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
[0048] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A flange grinding mechanism, characterized in that, It includes a housing, a rotary drive, a vacuum pump, a vacuum hose, a hollow shaft, a turntable, and multiple grinding discs, with the multiple grinding discs circumferentially spaced on the turntable; The turntable is provided with a first shaft hole, a central hole, multiple confluence holes, and multiple adsorption holes. The axis of the first shaft hole, the axis of the central hole, and the axis of the turntable coincide. The axis of the adsorption holes is parallel to the axis of the turntable. The confluence holes extend radially along the turntable. The central hole connects all the confluence holes, and each confluence hole connects to multiple adsorption holes. The outer casing has a receiving space, in which the dust pump and the rotary drive are both installed; one end of the hollow shaft is installed at the output end of the rotary drive, and the other end of the hollow shaft is installed in the first shaft hole; The rotary drive component is provided with a first through hole, and the hollow shaft is provided with a second through hole; One end of the suction pipe is installed at the inlet of the suction pump, and the other end of the suction pipe passes through the first through hole and the second through hole and is inserted into the central hole.
2. The flange grinding mechanism according to claim 1, characterized in that, The turntable is provided with a plurality of circumferentially spaced sliding grooves, and the flange grinding mechanism also includes a plurality of sliders, each slider being slidably mounted in the sliding grooves, and each grinding disc being mounted on the slider.
3. The flange grinding mechanism according to claim 2, characterized in that, The flange grinding mechanism also includes multiple lead screws, which are rotatably installed in the slide groove one by one; Each of the sliders is provided with a threaded through hole, and the slider is threadedly connected to the lead screw through the threaded through hole.
4. The flange grinding mechanism according to claim 3, characterized in that, Each of the lead screws is provided with a knob, which is located outside the slide groove.
5. The flange grinding mechanism according to claim 2, characterized in that, The flange grinding mechanism also includes flexible cover plates, which are installed one-to-one in the slide grooves and are used to seal the slide grooves.
6. The flange grinding mechanism according to claim 1, characterized in that, The outer casing is also provided with a dust outlet pipe, and the outlet of the dust pump is connected to the dust outlet pipe.
7. The flange grinding mechanism according to claim 1, characterized in that, The flange grinding mechanism also includes multiple plugs, which are inserted into the manifold holes one by one, and the plugs are used to seal the end of the manifold hole away from the center hole.
8. A grinding apparatus, characterized in that, Includes a dust cover and a flange grinding mechanism as described in any one of claims 1 to 7; The grinding disc is used to grind the flange of the pipeline to be repaired; the dust cover is installed in the inner hole of the pipeline to be repaired, and the dust cover is used to prevent foreign objects from entering the inner hole of the pipeline to be repaired.
9. The grinding apparatus according to claim 8, characterized in that, The dust cover includes a rigid disc and a flexible sleeve fitted on the rigid disc; When the dust cover is installed in the inner hole of the pipe to be inspected, the end of the flexible sleeve away from the rigid disc abuts against the inner wall of the pipe to be inspected.
10. The grinding apparatus according to claim 9, characterized in that, The rigid disc is equipped with a handle.