Flange grinding device

Abstract

The utility model relates to the field of flange maintenance, in particular to a flange grinding device, which is characterized in that a grinding surface of a grinding head is the same as a flange sealing surface, the grinding head is connected with a driven unit, the driven unit and a driving unit are rotatably connected onto a fixing component, the driving unit is used for driving the driving unit to rotate, and the driving unit drives the driven unit to rotate. The mounting base is fixed to the flange through the fixing assembly, the grinding head is made to directly face the sealing face of the flange, the grinding face of the grinding head rotates relative to the sealing face of the flange, the sealing face of the flange is ground, the grinding efficiency is improved, and the grinding effect is guaranteed; according to the flange grinding device, the driving unit and the grinding head are staggered, so that the driving unit is not contained in a maintenance space between flanges, the occupied space of the flange grinding device in the axial direction of the flange to be ground is reduced, and the flange grinding device can adapt to the narrow flange maintenance space.

Description

Technical Field

[0001] The utility model relates to the field of flange maintenance, in particular to a flange grinding device. Background Art

[0002] The through scratches on the flange sealing surface will cause the flange seal to fail, resulting in leakage of the medium in the system. The grinding quality of the flange sealing surface is very important. When the installed flange leaks, it is necessary to disassemble the flange for inspection and use a grinding tool to grind the flange sealing surface.

[0003] The prior art generally uses a pistol drill in conjunction with a grinding head for grinding. However, since pipes are laid on both sides of the installed flange, the maintenance space is small, and the size of the pistol drill itself makes it difficult to adapt to the narrow maintenance space. Manual grinding can only be performed manually, and the efficiency of manual grinding is low, and the grinding effect is unstable. Utility Model Content

[0004] One purpose of the utility model is to provide a flange grinding device, which can adapt to a narrow flange maintenance space and grind the flange sealing surface.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A flange grinding device, comprising:

[0007] A fixing assembly, comprising a fixing cover plate and a mounting seat connected to the fixing cover plate, wherein the fixing cover plate can be fixed relative to the flange to be ground and is spaced apart from the flange to be ground along the axial direction of the flange to be ground;

[0008] A transmission assembly, the transmission assembly comprising a driving unit and a driven unit distributed radially along the flange to be ground, the driven unit being rotatably connected to the mounting seat, and the driving unit being movably connected to the mounting seat;

[0009] A driving unit, the driving unit is used to drive the active unit to drive the driven unit to rotate;

[0010] A grinding head, wherein the grinding head is arranged between the fixed cover plate and the flange to be ground along the axial direction of the flange to be ground, and the grinding head is connected to the driven unit, and the driven unit can drive the grinding head to rotate so that the grinding head grinds the flange sealing surface of the flange to be ground.

[0011] Furthermore, the fixing assembly further comprises:

[0012] A guide member extends along the axial direction of the flange to be ground, and the guide member is axially movable and passes through the fixed cover plate to be connected to the mounting seat.

[0013] Furthermore, one end of the guide member is connected to a limit plate, and the limit plate can limit the guide member from being separated from the fixed cover plate in a direction approaching the flange to be ground.

[0014] Furthermore, the fixing assembly further comprises an elastic member, and the elastic member is used to enable the mounting seat to have a movement tendency away from the flange to be ground along the axial direction of the flange to be ground.

[0015] Furthermore, the fixed cover plate is provided with a stepped hole for passing the guide member, the stepped hole has a limiting surface along the axial direction of the flange to be ground facing away from the flange to be ground, and the elastic member is arranged between the limiting surface and the limiting plate.

[0016] Furthermore, the active unit includes a driving pulley, and the driven unit includes a driven pulley, the driving pulley is connected to the driven pulley through a transmission belt, the active unit is rotatably connected to one end of the mounting seat through a bearing, and the driven unit is rotatably connected to the other end of the mounting seat through a bearing.

[0017] Furthermore, the fixing assembly also includes a plurality of limiting bolts, the fixing cover plate is provided with a plurality of fixing threaded holes, one end of the limiting bolt is threadedly connected to the fixing threaded hole, and the other end of the limiting bolt is used to be threadedly connected to the threaded hole on the flange to be ground.

[0018] Furthermore, the grinding head is plugged and fixed to the driven unit.

[0019] Furthermore, one of the driven unit and the grinding head is provided with a fixing groove, and the other is provided with a fixing protrusion, and the fixing groove is a non-circular hole that is plug-fitted with the fixing protrusion.

[0020] Furthermore, the driving unit is a pistol drill, and the active unit is provided with a plug hole, and the drill bit of the pistol drill can be inserted into the plug hole and is restricted from rotating relative to the active unit.

[0021] Beneficial effects:

[0022] The utility model provides a flange grinding device, wherein the grinding surface of the grinding head is the same as the flange sealing surface, the grinding head is connected to a driven unit, the driven unit and the active unit are rotatably connected to a fixed component, a driving unit is used to drive the active unit to rotate, the active unit drives the driven unit to rotate, and a mounting seat is fixed to the flange by a fixed component, so that the grinding head is directly opposite to the flange sealing surface, and the flange sealing surface is ground by the grinding surface of the grinding head rotating relative to the flange sealing surface, thereby improving the grinding efficiency and ensuring the grinding effect, and by spacing the connection position of the driven unit on the mounting seat and the connection position of the active unit, the driving unit and the grinding head are staggered, so that the driving unit is not included in the maintenance space between the flanges, so that the flange grinding device provided by the utility model reduces the space occupied in the axial direction of the flange to be ground, so that the flange grinding device can adapt to the narrow flange maintenance space. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a flange grinding device provided by an embodiment of the utility model;

[0024] Figure 2 It is a partial structural schematic diagram of a flange grinding device provided by an embodiment of the utility model;

[0025] Figure 3 It is a structural schematic diagram of a mounting seat of a flange grinding device provided in an embodiment of the utility model;

[0026] Figure 4 It is a structural schematic diagram of a fixed cover plate of a flange grinding device provided in an embodiment of the utility model;

[0027] Figure 5 It is a top view of the grinding head of the flange grinding device provided in an embodiment of the utility model.

[0028] in:

[0029] 1. Grinding head; 11. Fixing groove; 2. Transmission assembly; 21. Active unit; 211. Active pulley; 212. Transmission belt; 22. Driven unit; 221. Driven pulley; 222. Fixing protrusion; 3. Fixing assembly; 31. Fixed cover plate; 311. Limiting surface; 312. Step hole; 313. Fixed threaded hole; 32. Mounting seat; 321. Bearing; 33. Guide member; 331. Limiting plate; 34. Elastic member; 35. Limiting bolt; 4. Driving unit; 100. Flange to be ground; 101. Flange sealing surface. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0032] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0033] Unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] When an installed flange leaks, it is necessary to disassemble the flange for inspection and use a grinding tool to grind the sealing surface of the flange. Currently, a pistol drill is often used in conjunction with a grinding head to grind the sealing surface of the flange. However, since pipes are laid on both sides of the installed flange and the inspection space is small, the size of the pistol drill itself makes it difficult to adapt to the narrow inspection space, and it can only be manually ground. The efficiency of manual grinding is low and the grinding effect is unstable.

[0035] Based on the above problems, this embodiment provides a flange grinding device that can adapt to a narrow flange maintenance space to grind the flange sealing surface.

[0036] Please refer to Figure 1-5 The flange grinding device provided in this embodiment includes a grinding head 1, a fixing assembly 3, a transmission assembly 2 and a driving unit 4. The fixing assembly 3 includes a fixing cover plate 31 and a mounting seat 32 connected to the fixing cover plate 31. The fixing cover plate 31 can be fixed relative to the flange 100 to be ground and is axially spaced from the flange 100 to be ground. The transmission assembly 2 includes an active unit 21 and a driven unit 22 distributed along the radial direction of the flange 100 to be ground. The driven unit 22 is rotatably connected to the mounting seat 32. The active unit 21 is movably connected to the mounting seat 32. The driving unit 4 is used to drive the active unit 21 to drive the driven unit 22 to rotate. The grinding head 1 is arranged between the fixing cover plate 31 and the flange 100 to be ground along the axial direction of the flange 100 to be ground. The grinding head 1 is connected to the driven unit 22. The driven unit 22 can drive the grinding head 1 to rotate so that the grinding head 1 grinds the flange sealing surface 101 of the flange 100 to be ground.

[0037] The fixed cover plate 31 is fixed relative to the flange 100 to be ground, and the driving unit 4 is used to drive the active unit 21, and the active unit 21 is used to drive the driven unit 22 to rotate, and the driven unit 22 drives the grinding head 1 to rotate relative to the flange sealing surface 101, so that the grinding head 1 is used to grind the flange sealing surface 101, thereby improving the grinding efficiency and ensuring the grinding effect.

[0038] By arranging the driven unit 22 and the active unit 21 radially spaced apart from each other along the flange 100 to be ground, the drive unit 4 and the grinding head 1 are radially offset along the flange 100 to be ground, so that the space occupied by the flange grinding device in the axial direction of the flange 100 to be ground is reduced, so that the drive unit 4 is not included in the maintenance space between the flanges, so that the flange grinding device can adapt to the narrow flange maintenance space. Specifically, the transmission assembly 2 and the mounting seat 32 are both arranged between the fixed cover plate 31 and the flange 100 to be ground.

[0039] For further information, please refer to Figure 1 In order to improve the grinding efficiency and grinding quality, the projection of the grinding surface of the grinding head 1 on the plane where the flange sealing surface 101 is located is the grinding projection, and the grinding projection always completely covers the flange sealing surface 101 of the flange 100 to be ground, so that the grinding head 1 can completely cover the flange sealing surface 101 of the flange 100 to be ground when rotating, so that the flange sealing surface 101 is polished and smooth, avoiding the flange sealing failure caused by the through scratches on the flange sealing surface 101, resulting in the exposure of the medium in the system. Exemplarily, the grinding head 1 and the flange 100 to be ground are coaxially arranged.

[0040] For further information, please refer to Figure 1 and Figure 4 The fixing assembly 3 further includes a plurality of limiting bolts 35. The fixing cover plate 31 is provided with a plurality of fixing threaded holes 313. One end of the limiting bolt 35 is threadedly connected to the fixing threaded hole 313. The other end of the limiting bolt 35 is used to be threadedly connected to the threaded hole on the flange to be ground 100. The limiting bolt 35 is used to fix the fixing cover plate 31 relative to the flange to be ground 100, and the fixing cover plate 31 is spaced apart from the flange to be ground 100. Specifically, in order to improve the fixing effect of the fixing cover plate 31, the number of the limiting bolts 35 is equal to the number of the bolt holes provided on the flange to be ground 100.

[0041] For further information, please refer to Figure 2 The active unit 21 includes an active pulley 211, and the driven unit 22 includes a driven pulley 221, and the active pulley 211 is connected to the driven pulley 221 through a transmission belt 212. The driving unit 4 drives the active pulley 211 to rotate, and drives the driven pulley 221 to rotate through the transmission belt 212, so that the driving unit 4 drives the grinding head 1 to rotate without being included in the maintenance space between the flanges, so as to grind the flange sealing surface 101 of the flange 100 to be ground.

[0042] In other embodiments, the active unit 21 and the driven unit 22 can also be two gears meshing with each other, or the active unit 21 is a movable rack, the driven unit 22 is a rotating gear, the active unit 21 is slidably connected to the mounting seat 32, the driven unit 22 is rotatably connected to the mounting seat 32, the active unit 21 and the driven unit 22 are meshed with each other, the active unit 21 is driven to slide relative to the mounting seat 32, thereby driving the driven unit 22 to rotate, so that the driving unit 4 drives the grinding head 1 to rotate without being included in the maintenance space between the flanges, thereby realizing the grinding of the flange sealing surface 101 of the flange 100 to be ground.

[0043] For further information, please refer to Figure 2 In this embodiment, the driving unit 4 is a pistol drill (not fully shown), and a plug hole is provided on the active unit 21. The drill bit of the pistol drill can be inserted into the plug hole and limited to rotate relative to the active unit 21, thereby driving the grinding head 1 connected to the driven unit 22 to rotate, and grinding the flange sealing surface 101 of the flange 100 to be ground, and the fixing method is simple, which is convenient for disassembly and assembly.

[0044] For further information, please refer to Figure 3 In order to reduce the friction coefficient between the active unit 21 and the driven unit 22 and the mounting seat 32, the active unit 21 is rotatably connected to one end of the mounting seat 32 through a bearing 321, and the driven unit 22 is rotatably connected to the other end of the mounting seat 32 through a bearing 321. The bearing 321 is used to reduce the friction coefficient of the active pulley 211 and the driven pulley 221 relative to the mounting seat 32, thereby reducing energy consumption.

[0045] For further information, please refer to Figure 1 and Figure 3 Since the flange sealing surface 101 of the flange 100 to be ground and the grinding head 1 will produce different degrees of loss during the grinding process, the grinding head 1 cannot completely fit the flange sealing surface 101 of the flange 100 to be ground. In order to ensure that the grinding head 1 and the flange sealing surface 101 of the flange 100 to be ground are always completely fitted during the grinding process, the fixing assembly 3 also includes a guide member 33, which extends along the axial direction of the flange 100 to be ground. The guide member 33 axially movably passes through the fixed cover plate 31 and is connected to the mounting seat 32. The mounting seat 32 is driven by the guide member 33 to move axially relative to the fixed cover plate 31, so that the mounting seat 32 drives the grinding head 1 to approach or move away from the flange 100 to be ground, ensuring that the grinding head 1 and the flange sealing surface 101 of the flange 100 to be ground are always completely fitted during the grinding process, and the grinding intensity of the grinding head 1 for the flange sealing surface 101 of the flange 100 to be ground can be appropriately adjusted accordingly.

[0046] For further information, please refer to Figure 3 and Figure 4 In order to limit the axial movement distance of the guide member 33 along the flange 100 to be ground and prevent the guide member 33 from detaching from the fixed cover plate 31, one end of the guide member 33 is connected to a limiting plate 331, and the limiting plate 331 can limit the guide member 33 from detaching from the fixed cover plate 31 in the direction close to the flange 100 to be ground.

[0047] For further information, please refer to Figure 3 and Figure 4 In order to facilitate the control of the grinding strength of the grinding head 1 on the flange sealing surface 101 of the flange 100 to be ground, the fixing assembly 3 further includes an elastic member 34, which is used to make the mounting seat 32 have a movement tendency to move away from the flange 100 to be ground along the axial direction of the flange 100 to be ground. When the guide member 33 is pressed and the guide member 33 drives the mounting seat 32 to approach the flange sealing surface 101 of the flange 100 to be ground, the elastic member 34 can properly block the mounting seat 32 from approaching, so as to prevent the grinding head 1 from impacting the flange sealing surface 101 of the flange 100 to be ground when the mounting seat 32 drives the grinding head 1 to approach the flange sealing surface 101 of the flange 100 to be ground along the axial direction of the flange 100 to be ground, thereby affecting the grinding effect. The appropriate resistance provided by the elastic member 34 can make the grinding strength of the flange sealing surface 101 of the flange 100 to be ground easier to control. Furthermore, when the grinding condition needs to be observed, the pressure on the guide member 33 is released, and the elastic restoring force of the elastic member 34 is utilized to drive the mounting seat 32 away from the flange 100 to be ground, so that the grinding condition of the flange 100 to be ground can be observed.

[0048] Specifically, the fixed cover plate 31 is provided with a stepped hole 312 for passing a limiting plate 331 . The stepped hole 312 has a limiting surface 311 facing away from the flange 100 to be ground along the axial direction of the flange 100 to be ground, and the elastic member 34 is arranged between the limiting surface 311 and the limiting plate 331 .

[0049] For further information, please refer to Figure 2 and Figure 5 In order to make the flange grinding device provided in this embodiment applicable to flanges of different types, the grinding head 1 is plugged and fixed to the driven unit 22, and the grinding head 1 of appropriate size is replaced according to the different sizes of the flange sealing surface 101 of the flange 100 to be ground.

[0050] For further information, please refer to Figure 2 and Figure 5 In order to prevent the driven unit 22 and the grinding head 1 from rotating relative to each other, and the grinding head 1 from rotating relative to the driven unit 22, a fixing groove 11 is provided on the grinding head 1, and a fixing protrusion 222 is provided on the driven unit 22. The fixing groove 11 and the fixing protrusion 222 are plug-fitted. The fixing groove 11 is a non-circular hole, and the fixing protrusion 222 is a non-cylinder, and the grinding head 1 is limited from rotating relative to the driven unit 22. In other embodiments, the grinding head 1 is provided with a fixing protrusion 222, and the driven unit 22 is provided with a fixing groove 11.

[0051] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A flange grinding device, characterized in that: include: A fixing assembly (3), comprising a fixing cover plate (31) and a mounting seat (32) connected to the fixing cover plate (31), wherein the fixing cover plate (31) can be fixed relative to the flange to be ground (100) and is spaced apart from the flange to be ground (100) along the axial direction of the flange to be ground (100); A transmission assembly (2), the transmission assembly (2) comprising an active unit (21) and a driven unit (22) distributed radially along the flange to be ground (100), the driven unit (22) being rotatably connected to the mounting seat (32), and the active unit (21) being movably connected to the mounting seat (32); A driving unit (4), the driving unit (4) being used to drive the active unit (21) to drive the driven unit (22) to rotate; A grinding head (1), wherein the grinding head (1) is arranged between the fixed cover plate (31) and the flange to be ground (100) along the axial direction of the flange to be ground (100), and the grinding head (1) is connected to the driven unit (22), and the driven unit (22) can drive the grinding head (1) to rotate so that the grinding head (1) grinds the flange sealing surface (101) of the flange to be ground (100).

2. The flange grinding device according to claim 1, characterized in that: The fixing assembly (3) further comprises: A guide member (33), wherein the guide member (33) extends along the axial direction of the flange (100) to be ground, and the guide member (33) is axially movably passed through the fixed cover plate (31) and connected to the mounting seat (32).

3. The flange grinding device according to claim 2, characterized in that: One end of the guide member (33) is connected to a limiting plate (331), and the limiting plate (331) is capable of limiting the guide member (33) from being separated from the fixed cover plate (31) in a direction approaching the flange (100) to be ground.

4. The flange grinding device according to claim 3, characterized in that: The fixing assembly (3) further comprises an elastic member (34), wherein the elastic member (34) is used to enable the mounting seat (32) to have a tendency to move away from the flange (100) to be ground along the axial direction of the flange (100) to be ground.

5. The flange grinding device according to claim 4, characterized in that: The fixed cover plate (31) is provided with a stepped hole (312), the stepped hole (312) being used for passing the guide member (33), the stepped hole (312) having a limiting surface (311) axially facing away from the flange to be ground (100) along the flange to be ground (100), and the elastic member (34) is arranged between the limiting surface (311) and the limiting plate (331).

6. The flange grinding device according to claim 1, characterized in that: The active unit (21) comprises a driving pulley (211), and the driven unit (22) comprises a driven pulley (221); the active pulley (211) is connected to the driven pulley (221) via a transmission belt (212); the active unit (21) is rotatably connected to one end of the mounting seat (32) via a bearing (321), and the driven unit (22) is rotatably connected to the other end of the mounting seat (32) via a bearing (321).

7. The flange grinding device according to claim 1, characterized in that: The fixing assembly (3) further comprises a plurality of limiting bolts (35), the fixing cover plate (31) is provided with a plurality of fixing threaded holes (313), one end of the limiting bolt (35) is threadedly connected to the fixing threaded hole (313), and the other end of the limiting bolt (35) is used for threaded connection to the threaded hole on the flange to be ground (100).

8. The flange grinding device according to claim 1, characterized in that: The grinding head (1) is plugged and fixed to the driven unit (22).

9. The flange grinding device according to claim 8, characterized in that: One of the driven unit (22) and the grinding head (1) is provided with a fixing groove (11), and the other is provided with a fixing protrusion (222); the fixing groove (11) is a non-circular hole that is plug-fitted with the fixing protrusion (222).

10. The flange grinding device according to any one of claims 1 to 9, characterized in that: The driving unit (4) is a pistol drill, and the active unit (21) is provided with a plug hole, and the drill bit of the pistol drill can be inserted into the plug hole and is restricted from rotating relative to the active unit (21).

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