Auxiliary device for disassembling and assembling pipeline valve

Abstract

The utility model relates to the technical field of valve dismounting, in particular to an auxiliary device for dismounting a pipeline valve, which comprises a group of clamping plates, an upper driving arm is fixedly arranged at the bottom end of one clamping plate, a lower driving arm is fixedly arranged at the bottom end of the other clamping plate, and the lower driving arm and the upper driving arm are mutually crossed. A driving seat is rotatably arranged between the lower driving arm and the upper driving arm, the lower driving arm and the upper driving arm are jointly provided with a driving assembly, the driving assembly is used for rotating the lower driving arm and the upper driving arm, the lower driving arm and the upper driving arm are jointly provided with a fastening assembly, and the fastening assembly is used for fixing the lower driving arm and the upper driving arm. The pipeline valve has the effect that workers can maintain the pipeline valve conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of valve disassembly, in particular to an auxiliary device for disassembling and assembling pipeline valves. Background Art

[0002] When maintaining the molecular sieve valve system on the gas purification pipeline of the oxygen plant, it is necessary to disassemble the valve to replace the sealing gasket. However, due to the thermal expansion and contraction of the pipeline and the water hammer effect, the clamping force of the flanges at both ends of the pipeline valve is very large. Therefore, auxiliary tools are needed to provide the flange with bearing force to reduce the clamping force of the flange on the valve.

[0003] In the related art, a Chinese patent with authorization announcement number CN215394738U provides a flange opening device, which includes a support arm, a first positioning arm is rotatably provided at one end of the support arm, and a second positioning arm is rotatably provided at the other end of the support arm. The first positioning arm and the second positioning arm are both provided with clamping claws at the ends away from the support arm, and a push rod is threadedly connected to the support arm, and a force-applying part is provided at the end of the push rod away from the top head. First, take two flange opening devices and install them symmetrically on both sides of the flange to be opened using the same operating steps. First, rotate the first positioning arm and the second positioning arm so that the clamping claws are inserted into the bolt holes of the flange, and then rotate the push rod to make the top head close to the flange. During the movement of the top head, the bearing force provided by the top head to the flange gradually increases, reducing the effect of the flange on the clamping force of the valve.

[0004] In the process of implementing the present application, the inventors found that there are at least the following problems in the technology: when the plug is away from one end of the push rod and contacts the outer wall of the pipe, it is not easy for the plug to continue to extend between the flanges. Since the distance between the outer edge of the flange and the outer wall of the pipe is narrow, the length of the plug extending between the flanges is limited by the distance between the outer edge of the flange and the outer wall of the pipe. When the length of the plug extending between the flanges is short, the width of the plug is also short, resulting in relatively poor support effect of the plug on the flange, which is inconvenient for the staff to disassemble the valve to replace the sealing gasket. Utility Model Content

[0005] In order to facilitate the staff to maintain the pipeline valve, the present application provides an auxiliary device for disassembling and assembling the pipeline valve.

[0006] The auxiliary device for disassembling and assembling a pipeline valve provided in this application adopts the following technical solution:

[0007] An auxiliary device for disassembling and assembling pipeline valves comprises a group of clamping plates, wherein an upper driving arm is fixedly arranged at the bottom end of one of the clamping plates, and a lower driving arm is fixedly arranged at the bottom end of the other clamping plate, the lower driving arm and the upper driving arm are crossed with each other, a driving seat is rotatably arranged between the lower driving arm and the upper driving arm, a driving assembly is commonly arranged on the lower driving arm and the upper driving arm, the driving assembly is used to rotate the lower driving arm and the upper driving arm, a fastening assembly is commonly arranged on the lower driving arm and the upper driving arm, and the fastening assembly is used to fix the lower driving arm and the upper driving arm.

[0008] By adopting the above technical solution, after the clamping plate is placed between the flanges, the lower driving arm and the upper driving arm are rotated by the driving assembly, so that the clamping plate abuts against the flange, and then the lower driving arm and the upper driving arm are fixed by the fastening assembly, so that the lower driving arm and the upper driving arm are not easy to rotate, and then the clamping plate provides a bearing force to the flange, reducing the clamping force of the flange on the valve, and the distance between the clamping plates is not affected by the width of the flange edge, which is convenient for staff to maintain the pipeline valve.

[0009] Preferably, a curved surface is provided on the top of the clamping plate.

[0010] By adopting the above technical solution, when the lower driving arm and the upper driving arm rotate, the lower driving arm and the upper driving arm drive the clamping plate to rotate. During the rotation of the clamping plate, the arc surface moves along the outer wall of the pipe, thereby reducing the situation where the clamping plate is restricted by the outer wall of the pipe and is difficult to move.

[0011] Preferably, the driving assembly includes a driving slider, and driving grooves are provided on the opposite surfaces of the lower driving arm and the upper driving arm, a driving shaft is slidingly arranged in the driving groove, the driving shaft is rotationally connected to the driving slider, and the driving slider is slidingly connected to the driving seat.

[0012] By adopting the above technical scheme, during the sliding process of the driving slider, the driving slider drives the driving shaft to slide along the driving groove. When the driving slider moves toward the driving seat, the driving slider makes the lower driving arm away from one end of the clamping plate and the upper driving arm away from one end of the clamping plate move away from each other. When the driving slider moves toward the direction away from the driving seat, the driving slider makes the lower driving arm away from one end of the clamping plate and the upper driving arm away from one end of the clamping plate move closer to each other, thereby achieving the effect of making the lower driving arm and the upper driving arm rotate relative to each other.

[0013] Preferably, the driving assembly also includes a driving screw, a connecting groove is provided on the driving seat, one end of the driving screw is inserted into the connecting groove, the driving screw is rotatably connected to the connecting groove, the other end of the driving screw passes through the driving slider, and the driving screw is threadedly connected to the driving slider.

[0014] By adopting the above technical solution, the driving screw is rotated, and the driving screw drives the driving slider to move.

[0015] Preferably, a driving cavity is opened in the driving seat, the driving cavity is communicated with the connecting groove, a driving gear and a transmission gear are rotatably arranged in the driving cavity, the driving gear and the transmission gear are meshed with each other, the driving gear is fixedly connected to the driving screw, a transmission screw is fixedly arranged on the transmission gear, and the transmission screw passes through the driving seat and the upper driving arm.

[0016] By adopting the above technical solution, the transmission screw is rotated, the transmission screw drives the transmission gear to rotate, the transmission gear rotates and drives the driving gear to rotate, and the driving gear rotates and drives the driving screw to rotate.

[0017] Preferably, a transmission nut is sleeved on the transmission screw, the transmission screw is threadedly connected to the transmission nut, and the bottom wall of the transmission nut abuts against the top wall of the upper driving arm.

[0018] By adopting the above technical solution, when the transmission screw has completed its rotation, the transmission nut is rotated to make the transmission nut abut against the upper drive arm, thereby increasing the friction between the transmission screw and the upper drive arm, making it difficult for the transmission screw to rotate.

[0019] Preferably, the fastening assembly includes a group of fastening plates, fastening screws, a group of outer nuts and a group of inner nuts, wherein one of the fastening plates is movably connected to the upper driving arm, and the other fastening plate is movably connected to the lower driving arm, the fastening screw passes through the fastening plate, the outer nut and the inner nut are both threadedly connected to the fastening screw, the fastening plates are located between the outer nuts, and the inner nuts are located between the fastening plates.

[0020] By adopting the above technical scheme, when the clamping plates move away from each other, the upper driving arm and the lower driving arm drive the fastening plates to move away from each other, and when the clamping plates move toward each other, the upper driving arm and the lower driving arm drive the fastening plates to move toward each other. After the clamping plates abut against the flange, the outer nut is rotated to make the opposite surface of the outer nut abut against the back surface of the fastening plate, and the inner nut is rotated to make the back surface of the inner nut abut against the opposite surface of the fastening plate, so that the fastening plate is not easy to move along the fastening screw, thereby achieving the situation that the upper driving arm and the lower driving arm are not easy to rotate relative to each other.

[0021] Preferably, a movable groove is provided on the opposite surface of the fastening plate, and the movable groove passes through one end of the fastening plate. A movable block is rotatably arranged in the movable groove, and one of the movable blocks is fixedly connected to one end of the upper driving arm away from the clamping plate, and the other movable block is fixedly connected to one end of the lower driving arm away from the clamping plate.

[0022] By adopting the above technical solution, when the upper driving arm and the lower driving arm rotate, the upper driving arm and the lower driving arm both drive the movable block to rotate in the movable groove, so that the upper driving arm and the lower driving arm both rotate relative to the fastening plate.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By setting the clamping plate, upper driving arm, lower driving arm, driving seat, driving assembly and fastening assembly, the flange is provided with bearing force, the clamping force of the flange on the valve is reduced, and it is convenient for the staff to maintain the pipeline valve;

[0025] 2. By setting the driving slider, driving slot and driving shaft, the effect of making the lower driving arm and the upper driving arm rotate relative to each other is achieved;

[0026] 3. By setting a fastening plate, a fastening screw, a group of outer nuts and a group of inner nuts, the opposite surfaces of the outer nuts are abutted against the back surfaces of the fastening plate, and the back surfaces of the inner nuts are abutted against the opposite surfaces of the fastening plate, so as to achieve the effect of fixing the upper driving arm and the lower driving arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of an auxiliary device for disassembling and assembling a pipeline valve in an embodiment of the present application.

[0028] Figure 2 It is a cross-sectional view showing the connection relationship between the drive seat and the drive slider in the embodiment of the present application.

[0029] Figure 3 It is a cross-sectional view showing the connection relationship between the upper driving arm and the fastening plate in the embodiment of the present application.

[0030] Figure 4 It is a cross-sectional view showing the connection relationship between the lower driving arm and the fastening plate in the embodiment of the present application.

[0031] Explanation of the accompanying drawings: 1. Snap-in plate; 11. Arc surface; 2. Upper driving arm; 3. Lower driving arm; 4. Driving seat; 41. Driving cavity; 42. Connecting groove; 5. Driving assembly; 51. Driving screw; 52. Driving slider; 6. Fastening assembly; 61. Fastening plate; 611. Movable groove; 612. Movable block; 62. Fastening screw; 63. Outer nut; 64. Inner nut; 7. Driving groove; 71. Driving shaft; 8. Driving gear; 81. Transmission gear; 82. Transmission screw; 83. Transmission nut. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The present application discloses an auxiliary device for disassembling and assembling a pipeline valve. Figures 1 to 4, which comprises a group of clamping plates 1, wherein an upper driving arm 2 is integrally formed at the bottom end of one clamping plate 1, and a lower driving arm 3 is integrally formed at the bottom end of another clamping plate 1. The upper driving arm 2 is located above the lower driving arm 3, the lower driving arm 3 and the upper driving arm 2 intersect each other, and a driving seat 4 is rotatably arranged between the lower driving arm 3 and the upper driving arm 2. A driving assembly 5 is installed on the lower driving arm 3 and the upper driving arm 2, and the driving assembly 5 is used to rotate the lower driving arm 3 and the upper driving arm 2. A fastening assembly 6 is installed on the lower driving arm 3 and the upper driving arm 2, and the fastening assembly 6 is used to fix the lower driving arm 3 and the upper driving arm 2. After the clamping plate 1 is placed between the flanges, the lower driving arm 3 and the upper driving arm 2 are rotated by the driving assembly 5, so that the clamping plate 1 is abutted against the flange. Then, the lower driving arm 3 and the upper driving arm 2 are fixed by the fastening assembly 6, so that the lower driving arm 3 and the upper driving arm 2 are not easy to rotate, and the clamping plate 1 provides a bearing force to the flange. The clamping force of the flange on the valve is reduced, and the distance between the clamping plates 1 is not affected by the width of the flange edge, which is convenient for workers to maintain the pipeline valve.

[0034] In order to make the clamping plate 1 abut against the flange, refer to Figure 1 The top of the clamping plate 1 is provided with an arc surface 11. When the lower driving arm 3 and the upper driving arm 2 rotate, the lower driving arm 3 and the upper driving arm 2 drive the clamping plate 1 to rotate. During the rotation of the clamping plate 1, the arc surface 11 moves along the outer wall of the pipe, reducing the situation where the clamping plate 1 is restricted by the outer wall of the pipe and is not easy to move.

[0035] In order to make the lower driving arm 3 and the upper driving arm 2 rotate, refer to Figures 1 to 4 , the driving assembly 5 includes a driving slider 52 and a driving screw 51. A connecting groove 42 is provided on the side of the driving seat 4 away from the clamping plate 1, one end of the driving screw 51 is inserted into the connecting groove 42, and the driving screw 51 is rotatably connected to the inner wall of the connecting groove 42. The other end of the driving screw 51 passes through the driving slider 52, and the driving screw 51 is threadedly connected to the driving slider 52. A driving groove 7 is provided on the opposite surfaces of the lower driving arm 3 and the upper driving arm 2, and a driving shaft 71 is slidably arranged in the driving groove 7, and the driving shaft 71 and the driving slider 52 are both rotatably connected. By rotating the driving screw 51, the driving screw 51 drives the driving slider 52 to move, and the driving slider 52 drives the driving shaft 71 to move along the driving groove 7. When the driving slider 52 moves toward the driving seat 4, the driving slider 52 causes the end of the lower driving arm 3 away from the clamping plate 1 and the end of the upper driving arm 2 away from the clamping plate 1 to move away from each other. When the driving slider 52 moves away from the driving seat 4 , the driving slider 52 makes the end of the lower driving arm 3 away from the clamping plate 1 and the end of the upper driving arm 2 away from the clamping plate 1 approach each other.

[0036] In order to rotate the drive screw 51, refer to Figure 1 and Figure 2, a driving chamber 41 is provided in the driving seat 4, and the driving chamber 41 is communicated with the connecting groove 42. A driving gear 8 and a transmission gear 81 are rotatably arranged in the driving chamber 41, and the driving gear 8 and the transmission gear 81 are meshed with each other. The driving gear 8 is welded to the end wall of the driving screw 51, and a transmission screw 82 is installed on the transmission gear 81, and the transmission screw 82 passes through the driving seat 4 and the upper driving arm 2. A transmission nut 83 is sleeved on the transmission screw 82, and the transmission screw 82 is threadedly connected with the transmission nut 83, and the bottom wall of the transmission nut 83 abuts against the top wall of the upper driving arm 2. When the transmission screw 82 is rotated, the transmission screw 82 drives the transmission gear 81 to rotate, and the rotation of the transmission gear 81 drives the driving gear 8 to rotate, and the rotation of the driving gear 8 drives the driving screw 51 to rotate. When the transmission screw 82 is completely rotated, the transmission nut 83 is rotated so that the transmission nut 83 abuts against the upper driving arm 2, thereby increasing the friction between the transmission screw 82 and the upper driving arm 2, so that the transmission screw 82 is not easy to rotate.

[0037] In order to fix the upper drive arm 2 and the lower drive arm 3, refer to Figures 1 to 4 The fastening assembly 6 includes a set of fastening plates 61, a fastening screw 62, a set of outer nuts 63 and a set of inner nuts 64. A movable groove 611 is provided on the opposite surface of the fastening plate 61, and the movable groove 611 passes through one end of the fastening plate 61. A movable block 612 is rotatably arranged in the movable groove 611, wherein one movable block 612 is welded to the end of the upper driving arm 2 away from the clamping plate 1, and the other movable block 612 is welded to the end of the lower driving arm 3 away from the clamping plate 1. The fastening screw 62 passes through the fastening plate 61, and the outer nut 63 and the inner nut 64 are both threadedly connected to the fastening screw 62. The fastening plates 61 are all located between the outer nuts 63, and the inner nuts 64 are all located between the fastening plates 61. When the upper driving arm 2 and the lower driving arm 3 rotate, one end of the upper driving arm 2 and one end of the lower driving arm 3 both drive the clamping plate 1 to move, and the other end of the upper driving arm 2 and the other end of the lower driving arm 3 drive the movable block 612 to rotate in the movable groove 611, while driving the fastening plate 61 to move relatively. When the clamping plates 1 move away from each other, the upper driving arm 2 and the lower driving arm 3 drive the fastening plate 61 to move away from each other. When the clamping plates 1 move toward each other, the upper driving arm 2 and the lower driving arm 3 drive the fastening plate 61 to move toward each other. After the clamping plate 1 abuts against the flange, the outer nut 63 is rotated so that the opposite surface of the outer nut 63 abuts against the back surface of the fastening plate 61, and the inner nut 64 is rotated so that the back surface of the inner nut 64 abuts against the opposite surface of the fastening plate 61, thereby making it difficult for the fastening plate 61 to move along the fastening screw 62, thereby achieving the situation that the upper driving arm 2 and the lower driving arm 3 are not easy to rotate relative to each other.

[0038] The implementation principle of the auxiliary device for disassembling and assembling pipeline valves in the embodiment of the present application is as follows: after placing the clamping plate 1 between the flanges, loosen the transmission nut 83, and then rotate the transmission screw 82 to move the driving slider 52 toward the driving seat 4, thereby moving the clamping plates 11 away from each other. When the clamping plate 1 abuts against the flange, rotate the transmission nut 83 to lock the transmission screw 82, and then rotate the external thread to make the opposite surface of the external nut 63 abut against the back surface of the fastening plate 61, and then rotate the internal nut 64 to make the back surface of the internal nut 64 abut against the opposite surface of the fastening plate 61, thereby making it difficult for the lower driving arm 3 and the upper driving arm 2 to rotate. At this time, the clamping plate 1 provides a bearing force to the flange, reducing the clamping force of the flange on the valve, and the distance between the clamping plates 1 is not affected by the width of the flange edge, which is convenient for the staff to maintain the pipeline valve.

[0039] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An auxiliary device for disassembling and assembling a pipeline valve, comprising a set of clamping plates (1), characterized in that: An upper driving arm (2) is fixedly arranged at the bottom end of one of the clamping plates (1), and a lower driving arm (3) is fixedly arranged at the bottom end of the other clamping plate (1); the lower driving arm (3) and the upper driving arm (2) are intersected with each other; a driving seat (4) is rotatably arranged between the lower driving arm (3) and the upper driving arm (2); a driving assembly (5) is commonly arranged on the lower driving arm (3) and the upper driving arm (2); the driving assembly (5) is used to rotate the lower driving arm (3) and the upper driving arm (2); a fastening assembly (6) is commonly arranged on the lower driving arm (3) and the upper driving arm (2); the fastening assembly (6) is used to fix the lower driving arm (3) and the upper driving arm (2).

2. The auxiliary device for disassembling and assembling a pipeline valve according to claim 1, characterized in that: The top end of the clamping plate (1) is provided with an arc-shaped surface (11).

3. The auxiliary device for disassembling and assembling a pipeline valve according to claim 1, characterized in that: The driving assembly (5) comprises a driving slider (52), and driving grooves (7) are provided on the opposite surfaces of the lower driving arm (3) and the upper driving arm (2), a driving shaft (71) is slidably arranged in the driving groove (7), the driving shaft (71) is rotatably connected to the driving slider (52), and the driving slider (52) is slidably connected to the driving seat (4).

4. The auxiliary device for disassembling and assembling a pipeline valve according to claim 3, characterized in that: The driving assembly (5) further comprises a driving screw rod (51), a connecting groove (42) is provided on the driving seat (4), one end of the driving screw rod (51) is inserted into the connecting groove (42), the driving screw rod (51) and the connecting groove (42) are rotationally connected, the other end of the driving screw rod (51) passes through the driving slider (52), and the driving screw rod (51) and the driving slider (52) are threadedly connected.

5. The auxiliary device for disassembling and assembling a pipeline valve according to claim 4, characterized in that: A driving chamber (41) is provided in the driving seat (4), the driving chamber (41) and the connecting groove (42) are communicated with each other, a driving gear (8) and a transmission gear (81) are rotatably arranged in the driving chamber (41), the driving gear (8) and the transmission gear (81) are meshed with each other, the driving gear (8) is fixedly connected to a driving screw (51), a transmission screw (82) is fixedly arranged on the transmission gear (81), and the transmission screw (82) passes through the driving seat (4) and the upper driving arm (2).

6. The auxiliary device for disassembling and assembling a pipeline valve according to claim 5, characterized in that: A transmission nut (83) is sleeved on the transmission screw (82), the transmission screw (82) and the transmission nut (83) are threadedly connected, and the bottom wall of the transmission nut (83) and the top wall of the upper driving arm (2) are in contact with each other.

7. The auxiliary device for disassembling and assembling a pipeline valve according to claim 1, characterized in that: The fastening assembly (6) comprises a group of fastening plates (61), a fastening screw (62), a group of outer nuts (63) and a group of inner nuts (64), wherein one of the fastening plates (61) is movably connected to the upper driving arm (2), and the other fastening plate (61) is movably connected to the lower driving arm (3), the fastening screw (62) passes through the fastening plate (61), the outer nut (63) and the inner nut (64) are both threadedly connected to the fastening screw (62), the fastening plates (61) are both located between the outer nuts (63), and the inner nuts (64) are both located between the fastening plates (61).

8. The auxiliary device for disassembling and assembling a pipeline valve according to claim 7, characterized in that: A movable groove (611) is formed through the opposite surface of the fastening plate (61), and the movable groove (611) passes through one end of the fastening plate (61). A movable block (612) is rotatably arranged in the movable groove (611), wherein one of the movable blocks (612) is fixedly connected to one end of the upper driving arm (2) away from the clamping plate (1), and the other movable block (612) is fixedly connected to one end of the lower driving arm (3) away from the clamping plate (1).

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