Separate opening and closing device

Abstract

The present application belongs to the technical field of quick-opening seals, and in particular, relates to a separate opening and closing device. The existing opening and closing device has a complex structure, which makes it inconvenient to control. The present application provides a separate opening and closing device, including several separate opening and closing units; the separate opening and closing units include a rotating mechanism, a push-pull mechanism and a split ring connected in sequence from top to bottom; the rotating mechanism includes a swing arm shaft; the push-pull mechanism includes a turntable, the turntable is arranged on the door cover, the turntable is connected to the swing arm shaft, a sliding track is arranged on the turntable, a thrust roller is arranged in the sliding track, a column pin is arranged in the thrust roller, a guide roller is arranged outside the column pin, a connecting rod is fixedly connected to the lower end of the column pin, a slide groove is arranged on the door cover, and the connecting rod is arranged in the slide groove; the split ring is connected to the connecting rod, and the split ring is arranged between the flange and the door cover. The rotating mechanism and the push-pull mechanism cooperate with each other, corresponding to a split ring, to achieve separate control of the split ring, with a simple structure, easy control and convenient operation.

Description

Technical Field

[0001] The present application belongs to the technical field of quick-opening seals, and in particular relates to a separate opening and closing device. Background Art

[0002] The quick-opening blind plate structure is a mechanical device installed at the end of a pressure vessel or pressure pipe to achieve quick opening and closing. It is widely used in industrial fields such as petroleum and natural gas, chemical industry, aerospace, and electric power. Compared with the bolt flange structure, the quick-opening blind plate structure is faster to open and close the door cover, and is suitable for industrial applications where the door cover needs to be frequently installed and disassembled.

[0003] Since the ring-lock structure has the advantages of easy opening and closing of the blind plate door cover and a simple and reasonable load-bearing structure, it is applied to long-distance pipeline filters; however, the door cover is often stuck and cannot be opened when it is opened, and the structural design is not compact enough. In addition, the existing ring-lock quick-opening structure adopts a notch cut in the whole circular ring, and the two ends of the notch are opened and closed by a mechanism (generally manually operated, similar to a wrench rotation mechanism) to connect the door cover and the high neck to withstand the axial force of the internal pressure; in the opening or closing process of the ring lock, the radial size change is mainly achieved through the overall deformation of the ring lock. As the diameter of the blind plate or the internal pressure increases, the stiffness of the ring lock will become larger and larger, and the force required to overcome the deformation will also become larger and larger, and the operation will become difficult.

[0004] The split annular ring lock is achieved by cutting the whole circular ring into a certain number (weight) of split rings according to the diameter size, and connecting them with struts, and moving (pushing and pulling) the split rings back and forth along the radial direction by the struts to complete the ring lock opening and closing effect. The whole ring is divided into blocks, so in theory, only the weight of the split rings and their friction resistance need to be overcome to complete the opening and closing process, and the opening and closing force will be reduced compared to the whole lock ring structure, but the existing opening and closing device has a complex structure, making it inconvenient to control. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] The split annular ring lock is based on the process of cutting the whole circular ring into a certain number (weight) of split rings according to the diameter size, and connecting them with struts, and moving (pushing and pulling) the split rings back and forth radially by the struts to complete the ring lock opening and closing effect. The whole ring is divided into blocks, so in theory, only the weight of the split rings and their friction resistance need to be overcome to complete the opening and closing process, and the opening and closing force will be reduced compared to the whole lock ring structure. However, the existing opening and closing device has a complex structure, which makes it inconvenient to control. The present application provides a separate opening and closing device.

[0007] 2. Technical solution

[0008] In order to achieve the above-mentioned purpose, the present application provides a separate opening and closing device, including a plurality of separate opening and closing units;

[0009] The split opening and closing unit comprises a rotating mechanism, a push-pull mechanism and a split ring connected in sequence from top to bottom;

[0010] The rotating mechanism includes a rotary arm shaft;

[0011] The push-pull mechanism includes a turntable, which is arranged on the door cover, the turntable is connected to the swing arm shaft, a slide track is arranged on the turntable, the slide track runs through the turntable, a thrust roller is arranged in the slide track, a column pin is arranged in the thrust roller, a guide roller is arranged outside the column pin, the thrust roller is arranged on the door cover, the guide roller is arranged below the door cover, the guide roller is arranged below the thrust roller, a connecting rod is fixedly connected to the lower end of the column pin, a slide groove is arranged on the door cover, and the connecting rod is arranged in the slide groove;

[0012] The split ring is connected to the connecting rod, and the split ring is arranged between the flange and the door cover.

[0013] Optionally, the rotating mechanism further comprises a rotating arm rod, a through hole is provided on the upper portion of the rotating arm shaft, and the rotating arm rod can pass through the through hole.

[0014] Optionally, the swing arm axis coincides with the central axis of the pin.

[0015] Optionally, the sliding track is arc-shaped.

[0016] Optionally, a sealing ring is further included, and the sealing ring is arranged in the groove at the bottom of the door cover or on the flange groove.

[0017] Optionally, the turntable is connected to the door cover via fixing screws, and the fixing screws are clearance-matched with the turntable.

[0018] Optionally, the separate opening and closing units are connected via a locking mechanism.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the separate opening and closing device provided by the present application has the following beneficial effects:

[0021] The present application provides a split opening and closing device, in which a rotating mechanism and a push-pull mechanism cooperate with each other, corresponding to a split ring, to achieve separate control of the split ring, with a simple structure, easy control, and convenient operation. At the same time, a chain mechanism is set between the split opening and closing units, so that each split opening and closing unit is opened or closed one by one in sequence to avoid missing a position. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a partial structural schematic diagram of a separate opening and closing device of the present application;

[0023] Figure 2 It is a first structural schematic diagram of a separate opening and closing device of the present application;

[0024] Figure 3 It is a second structural schematic diagram of a separate opening and closing device of the present application;

[0025] Figure 4 It is a plan view of a separate opening and closing device of the present application;

[0026] In the figure: 1- split ring, 2- swing arm shaft, 3- turntable, 4- slide track, 5- thrust roller, 6- pin, 7- guide roller, 8- connecting rod, 9- flange, 10- door cover, 11- swing arm, 12- through hole, 13- sealing ring, 14- fixing screw, 15- slide groove. DETAILED DESCRIPTION

[0027] Hereinafter, the specific embodiments of the present application will be described in detail with reference to the accompanying drawings. According to these detailed descriptions, those skilled in the art can clearly understand the present application and can implement the present application. Without violating the principles of the present application, the features in the various embodiments can be combined to obtain new implementations, or certain features in certain embodiments can be replaced to obtain other preferred implementations.

[0028] See also Figures 1 to 4 , the present application provides a separate opening and closing device, including a plurality of separate opening and closing units;

[0029] The split opening and closing unit comprises a rotating mechanism, a push-pull mechanism and a split ring 1 which are connected in sequence from top to bottom;

[0030] The rotating mechanism comprises a swing arm shaft 2;

[0031] The push-pull mechanism includes a turntable 3, which is arranged on the door cover 10, and the turntable 3 is connected to the swing arm shaft 2. A sliding track 4 is arranged on the turntable 3, and the sliding track 4 passes through the turntable 3. A thrust roller 5 is arranged in the sliding track 4, and a pin 6 is arranged in the thrust roller 5. A guide roller 7 is arranged outside the pin 6. The thrust roller 5 is arranged on the door cover 10, and the guide roller 7 is arranged below the door cover 10. The guide roller 7 is arranged below the thrust roller 5. A connecting rod 8 is fixedly connected to the lower end of the pin 6. A slide groove 15 is arranged on the door cover 10, and the connecting rod 8 is arranged in the slide groove 15; the slide groove 15 here is a linear slide groove.

[0032] The split ring 1 is connected to the connecting rod 8 , and the split ring 1 is arranged between the flange 9 and the door cover 10 .

[0033] Optionally, the rotating mechanism further includes a rotating arm 11 , and a through hole 12 is provided on the upper portion of the rotating arm shaft 2 , and the rotating arm 11 can pass through the through hole 12 .

[0034] Optionally, the swing arm shaft 2 coincides with the central axis of the pin 6 .

[0035] Optionally, the sliding track 4 is arc-shaped.

[0036] Optionally, a sealing ring 13 is further included, and the sealing ring 13 is arranged in the bottom groove of the door cover 10 or on the flange groove of the flange 9.

[0037] Optionally, the turntable 3 is connected to the door cover 10 via fixing screws 14 , and the fixing screws 14 are clearance-matched with the turntable 3 .

[0038] Optionally, the separate opening and closing units are connected via a locking mechanism.

[0039] Example 1

[0040] like Figures 2-3 As shown, this embodiment provides a separate opening and closing device, which is installed on a ring-locking quick-opening blind plate structure. The split ring 1 is installed between the blind plate high-necked flange 9 (the flange 9 arranged at the inlet and outlet positions of the pressure vessel) and the door cover 10. The split ring 1 is connected to the push-pull mechanism through a connecting rod 8. The push-pull mechanism is subjected to the force of the rotating mechanism, driving the split ring 1 to move to realize the door opening and closing process.

[0041] like Figure 4 As shown, the turntable 3 is provided with a sliding track 4, i.e., a thrust groove. In this embodiment, the thrust groove is an arc-shaped thrust groove evenly distributed along the circumference of the turntable 3. The arc-shaped thrust groove is in the shape of an impeller, i.e., the arc-shaped thrust groove is not coaxial with the turntable 3, and the two ends of the arc-shaped thrust groove are located at different diameter positions of the turntable 3. The rotating arm 11 can be used in conjunction with the swing arm shaft 2 by passing through the through hole 12. The swing arm shaft 2 is rotated by rotating the rotating arm 11. Since the swing arm shaft 2 and the turntable 3 are connected, the turntable 3 can be pushed to rotate around its axial direction. The thrust received by the turntable 3 is transmitted to the thrust roller 5, so that the guide roller 7 moves in the slide groove 15 of the door cover 10, and then drives the connecting rod 8 to move back and forth, so that the split ring 1 connected to the connecting rod 8 moves back and forth in the radial direction into and out of the connecting groove of the flange 9, so as to achieve the opening and closing of the split ring 1, thereby realizing the door opening and closing process. The guide roller 7 can reduce the friction resistance.

[0042] The thrust roller 5 and the guide roller 7 are passed through the pin 6, and then the pin 6 is inserted into the slide track 4, so that the thrust roller 5 is placed in the slide track 4; finally, the fixing screw 14 is passed through the turntable 3, so that the fixing screw 14 and the turntable 3 are loosely matched, and the turntable 3 can rotate independently, and the fixing screw 14 also realizes the axial positioning of the turntable 3.

[0043] During the opening and closing process, a certain gap will be left between the connection groove of the split ring 1 and the flange 9, and this gap is realized by the sealing ring 13 with floating function. The sealing ring 13 is located in the groove at the bottom of the door cover 10. There is a certain floating distance between the initial installation position of the sealing ring 13 and the working position with internal pressure, so that after the working pressure is released, the sealing ring 13 will no longer have a tightening force on the door cover 10 and the lock ring, ensuring that there is no resistance to the opening and closing of the ring lock. Therefore, the push and pull force of the split ring 1 only needs to overcome the weight (the weight of the split ring and the support rod) and the friction resistance caused by the weight, and the rotating arm force (torque) of the turntable 3 only needs to overcome the resistance torque; because the influence of this resistance on the opening and closing of the lock ring is smaller than the uncertainty resistance caused by the sealing ring tightening that cannot be eliminated, the size range of large and high-pressure door covers that can be controlled by a manual wrench is greatly increased.

[0044] Embodiment 2:

[0045] like Figure 3 As shown, the difference from the above-mentioned embodiment 1 is that in this embodiment, the central axis of the swing arm shaft 2 coincides with the central axis of the pin 6, so that the force transmission efficiency is higher.

[0046] The present application provides a split opening and closing device, in which a rotating mechanism and a push-pull mechanism cooperate with each other, corresponding to a split ring, to achieve separate control of the split ring, with a simple structure, easy control, and convenient operation. At the same time, a chain mechanism is set between the split opening and closing units, so that each split opening and closing unit is opened or closed one by one in sequence to avoid missing a position.

[0047] Although the present application is described above with reference to specific embodiments, it should be understood by those skilled in the art that many modifications may be made to the configurations and details disclosed in the present application within the principles and scope disclosed in the present application. The scope of protection of the present application is determined by the appended claims, and the claims are intended to cover all modifications included in the equivalent literal meaning or scope of the technical features in the claims.

Claims

1. A separate opening and closing device, characterized in that: It includes several separate opening and closing units; The split opening and closing unit comprises, from top to bottom, a rotating mechanism, a push-pull mechanism and a split ring (1) which are connected in sequence; The rotating mechanism comprises a rotary arm shaft (2); The push-pull mechanism comprises a turntable (3), wherein the turntable (3) is arranged on the door cover (10), the turntable (3) is connected to the swing arm shaft (2), a slide track (4) is arranged on the turntable (3), the slide track (4) passes through the turntable (3), a thrust roller (5) is arranged in the slide track (4), a column pin (6) is arranged in the thrust roller (5), a guide roller (7) is arranged outside the column pin (6), the thrust roller (5) is arranged on the door cover (10), the guide roller (7) is arranged below the door cover (10), the guide roller (7) is arranged below the thrust roller (5), a connecting rod (8) is fixedly connected to the lower end of the column pin (6), a slide groove (15) is arranged on the door cover (10), and the connecting rod (8) is arranged in the slide groove (15); The split ring (1) is connected to the connecting rod (8), and the split ring (1) is arranged between the flange (9) and the door cover (10); the rotating mechanism and the push-pull mechanism cooperate with each other, corresponding to one of the split rings (1), to achieve separate control of the split ring (1); The turntable (3) is connected to the door cover (10) via a fixing screw (14), and the fixing screw (14) and the turntable (3) are clearance-matched; The separate opening and closing units are connected by a chain mechanism, so that each separate opening and closing unit is opened or closed one by one in sequence to avoid missing a position.

2. The separate opening and closing device according to claim 1, characterized in that: The rotating mechanism further comprises a rotating arm rod (11), a through hole (12) being provided on the upper portion of the rotating arm shaft (2), and the rotating arm rod (11) can pass through the through hole (12).

3. The separate opening and closing device according to claim 1, characterized in that: The swing arm shaft (2) coincides with the central axis of the pin (6).

4. The separate opening and closing device according to claim 3, characterized in that: The sliding track (4) is arc-shaped.

5. The separate opening and closing device according to any one of claims 1 to 4, characterized in that: It also comprises a sealing ring (13), wherein the sealing ring (13) is arranged in a groove at the bottom of the door cover (10) or on a flange groove of the flange (9).

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