Hubbed welding neck flange manhole of rotary cover

Abstract

The utility model discloses a welding neck flange manhole with a rotary cover, which relates to the technical field of chemical equipment, and comprises a fixed flange and a rotary flange, the top surface of the rotary flange is connected with two setting plates, and the surface of each setting plate is provided with a vertical sliding groove; two fixing rods are arranged on one side of the fixing flange, and the sliding columns between the two fixing rods are slidably connected in the sliding grooves. Two rotating rods are rotatably arranged on the top surface of the rotary cover, two fixed folding rods are arranged at the bottom ends of arc rods at one ends of the two rotating rods, and the fixed flange is provided with a chamfer; the rotating rod and the arc rod are rotatably arranged, the fixed folding rod connected with the arc rod can make contact with the surfaces of the two flanges, and chamfers are arranged at the corresponding positions of the fixed flanges, so that the fixed folding rod fixes the rotary flange and the fixed flange. The chamfer of the fixed flange can enable the fixed folding rod and the arc rod to rotate smoothly, and after rotation, the rotary flange and the fixed flange can be driven to move and rotate.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a rotary cover with a neck butt-welded flange manhole. Background Art

[0002] In chemical containers, manholes are usually opened on the containers to facilitate the installation, repair, lining and corrosion protection of internal accessories, and to inspect and clean the inside of the container. A cored manhole is a traditional manhole cover with a core plate that is equal to the curvature of the container wall and flush with the container wall. This structure can prevent the accumulation of materials or fillers inside the manhole, and can prevent the materials or fillers from forming dead areas with poor flow inside the manhole. The pipe connection of the manhole requires the use of flanges. A butt-weld flange is a type of pipe fitting, which refers to a flange with a neck and a round tube transition and is butt-welded to the pipe. Butt-weld flanges are not easy to deform and have good sealing.

[0003] The existing rotary cover flange manhole, for example, a rotary cover core manhole device with publication number CN216661147U, has a ring-shaped manhole flange, the upper end of the manhole cylinder section is welded to the manhole flange, and the lower end of the manhole cylinder section is welded to the manhole of the container; the inner core is cylindrical, the upper end of the outer ring surface of the inner core is welded to the inner ring surface of the hollow flange, and when the manhole cover with core is closed, the inner core is sleeved inside the manhole cylinder section, and the hollow flange and the manhole flange are detachably connected.

[0004] This manhole adopts a conventional flange, but a connecting neck is provided in the center of the butt-welded flange, so that the handle of this manhole cannot be installed normally, and this manhole lacks corresponding auxiliary lifting and rotating structures. Summary of the invention

[0005] The purpose of the utility model is to solve the problem that the above-mentioned background technology butt-weld flange has no installation space for the handle and lacks the structure for auxiliary lifting and rotation, and to propose a rotating cover with a neck butt-weld flange manhole.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A manhole with a rotating cover and a neck butt-welded flange comprises a fixed flange and a rotating flange, wherein the top surface of the rotating flange is connected to two setting plates, and the surfaces of the setting plates are provided with vertical sliding grooves; two fixing rods are provided on one side of the fixed flange, and a sliding column is provided between the two fixing rods, and the sliding column is slidably connected in the sliding groove; two rotating rods are rotatably provided on the top surface of the rotating cover, arc rods are provided at one end of the two rotating rods, and two fixed folding rods are provided at the bottom end of the arc rods, chamfers are provided at relative positions of the fixed flanges, and the same fixed lifting rod is provided between the two fixed folding rods.

[0008] As a further solution of the utility model: a connecting neck is arranged on the side opposite to the fixed flange.

[0009] As a further solution of the utility model: the shape of the connecting neck is an inclined sleeve with a radius gradually decreasing toward the outside.

[0010] As a further solution of the utility model: the sliding groove is arranged along the vertical direction, and the top ends of the fixing rods on both sides extend vertically upward.

[0011] As a further solution of the utility model: the sliding column is arranged along the horizontal direction.

[0012] As a further solution of the utility model: rotating seats are arranged on both sides of the surface of the rotating flange, and a rotating rod is rotatably arranged in the rotating seat.

[0013] As a further solution of the utility model: the chamfer inclination angle of the fixed flange is the same as the bending angle of the fixed folding rod.

[0014] As a further solution of the utility model: the shape of the arc rod coincides with the edge shape of the swivel flange.

[0015] Beneficial effects of the utility model:

[0016] (1) The utility model provides a rotating cover with a neck butt-welded flange manhole, which is provided with a rotating flange and a fixed flange. A setting plate on one side of the top surface of the rotating flange is provided with a sliding groove, and a sliding column provided between the fixed rods on one side of the fixed flange slides in the sliding groove; after vacating the rotating space, the rotating flange can rotate relative to the fixed flange, thereby completing the rotating operation of the manhole;

[0017] (2) The utility model provides a rotating cover with a neck butt-welded flange manhole, which is rotatably provided with a rotating rod and an arc rod on the rotating flange, and the fixed folding rod connected with the arc rod can contact the surfaces of the two flanges, and the corresponding position of the fixed flange is provided with a chamfer, so that the fixed folding rod fixes the rotating flange and the fixed flange. The chamfer of the fixed flange can make the fixed folding rod and the arc rod rotate smoothly, and after the rotation, it can drive the rotating flange and the fixed flange to move and rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a structural schematic diagram of a rotary cover with a neck butt-welded flange manhole of the utility model;

[0020] Figure 2 It is a schematic diagram of the top structure of a rotary cover with a neck butt-welded flange manhole of the utility model;

[0021] Figure 3 It is a structural schematic diagram of disassembling a manhole with a neck butt-welded flange of a rotary cover according to the utility model;

[0022] Figure 4 It is a connection schematic diagram of the arc rod and the fixed folding rod of the utility model.

[0023] In the figure: 1. swivel flange; 2. fixed flange; 3. connecting neck; 4. fixed rod; 5. sliding column; 6. setting plate; 7. sliding groove; 8. rotating rod; 9. rotating seat; 10. arc rod; 11. fixed folding rod; 12. fixed lifting rod; 13. chamfer. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4 As shown, the utility model is a manhole with a rotating cover and a neck butt-welded flange, comprising a rotating flange 1 and a fixed flange 2, and the rotating flange 1 and the fixed flange 2 have the same shape. A connecting neck 3 is provided on the side of the rotating flange 1 and the fixed flange 2 that are away from each other, and the connecting neck 3 is a sleeve with a radius that gradually decreases outward, and the surface of the connecting neck 3 is inclined. Two fixing rods 4 are provided on one side of the circumferential surface of the fixed flange 2, and the two fixing rods 4 are symmetrically arranged about the central plane of the fixed flange 2, and the top ends of the fixing rods 4 on both sides extend upward in the vertical direction. Two setting plates 6 are provided on the top surface of the rotating flange 1, and the setting plates 6 are located directly above the fixing rods 4, and vertical sliding grooves 7 are provided on the two setting plates 6. A sliding column 5 is provided between the top ends of the fixing rods 4 on both sides, and the sliding column 5 is arranged in the horizontal direction. The sliding column 5 passes through the two sliding grooves 7, and the sliding column 5 is slidably limited in the sliding grooves 7.

[0026] Rotating seats 9 are provided on both sides of the top surface of the swivel flange 1, and the rotating seats 9 are located in a direction away from the setting plate 6. The two rotating seats 9 are rotatably provided with rotating rods 8, one end of the two rotating rods 8 extends to the edge of the swivel flange 1 along the horizontal direction, and the outer ends of the two rotating rods 8 are connected to the same arc rod 10, and the shape of the arc rod 10 is adapted to the circumferential shape of the swivel flange 1. When the rotating rod 8 is located in the horizontal direction, a vertical fixed folding rod 11 is provided on the bottom surface of the arc rod 10, and a chamfer 13 is provided in the direction of the fixed flange 2 close to the fixed folding rod 11, and the bending angle of the fixed folding rod 11 is adapted to the chamfer 13 of the fixed flange 2, so that the fixed folding rod 11 is in contact with the surface of the swivel flange 1 and the fixed flange 2 at this time, and the bottom ends of the fixed folding rods 11 on both sides are provided with the same fixed lifting rod 12.

[0027] When using this kind of rotating cover with neck welding flange manhole, the rotating flange 1 and the fixed flange 2 are installed at the designated pipe connection. The strength of the pipe is reinforced by the connection neck 3. The rotating flange 1 and the fixed flange 2 reinforce the connection of the two pipes. It is necessary to open the manhole to rotate the rotating cover. By pulling the arc rod 10, the arc rod 10 drives the fixed folding rod 11 and the rotating rod 8 to rotate. The fixed folding rod 11 is separated from the surface of the fixed flange 2 and the rotating flange 1, thereby releasing the relative fixation of the fixed flange 2 and the rotating flange 1. The fixed rod 4 rotates and contacts the connection neck 3 on the top surface of the rotating flange 1, so that the arc rod 10 and the fixed lifting rod 12 are suspended in the air. By pulling the fixed lifting rod 12, the rotating flange 1 can be lifted, so that the bottom surface of the rotating flange 1 is separated from the fixed flange 2. At this time, the sliding groove 7 on the top surface of the rotating flange 1 and the sliding column 5 slide relative to each other, so that the sliding column 5 slides to the bottom of the sliding groove 7. At this time, there is a rotation space between the swivel flange 1 and the fixed flange 2. The swivel flange 1 can rotate relative to the sliding groove 7 and the sliding column 5. The staff pulls the arc rod 10 to drive the swivel flange 1 to rotate. The arc rod 10 is close to the rotating shaft and the arc setting makes it easier for the swivel flange 1 to rotate. Thus, the swivel flange 1 and the fixed flange 2 can rotate to open the manhole device. After the operation is completed, the swivel flange 1 is driven by the arc rod 10 to rotate above the fixed flange 2 again, so that the swivel flange 1 fits with the fixed flange 2, and then the rotating rod 8 drives the fixed folding rod 11 and the fixed lifting rod 12 to fit the surface of the fixed flange 2 and the swivel flange 1 to fix them.

[0028] Working principle of the utility model: The utility model is a revolving cover with a neck butt-welded flange manhole, which is provided with a revolving flange 1 and a fixed flange 2, and a setting plate 6 on one side of the top surface of the revolving flange 1 is provided with a sliding groove 7, and a sliding column 5 provided between the fixed rods 4 on one side of the fixed flange 2 slides in the sliding groove 7; after the rotation space is vacated, the revolving flange 1 can rotate relative to the fixed flange 2, thereby completing the revolving operation of the manhole; the revolving flange 1 is provided with a rotating rod 8 and an arc rod 10 rotatably, and the fixed folding rod 11 connected to the arc rod 10 can contact the surfaces of the two flanges, and the fixed flange 2 is provided with a chamfer 13 at the corresponding position, so that the fixed folding rod 11 fixes the revolving flange 1 and the fixed flange 2. The chamfer 13 of the fixed flange 2 can make the fixed folding rod 11 and the arc rod 10 rotate smoothly, and after the rotation, it can drive the revolving flange 1 and the fixed flange 2 to move and rotate.

[0029] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A rotating cover with neck butt-welded flange manhole, characterized in that: The invention comprises a fixed flange (2) and a swivel flange (1), wherein the top surface of the swivel flange (1) is connected with two setting plates (6), and the surface of the setting plates (6) is provided with a vertical sliding groove (7); two fixed rods (4) are provided on one side of the fixed flange (2), and a sliding column (5) is provided between the two fixed rods (4), and the sliding column (5) is slidably connected in the sliding groove (7); two rotating rods (8) are rotatably provided on the top surface of the swivel cover, and arc rods (10) are provided at one end of the two rotating rods (8), and two fixed folding rods (11) are provided at the bottom end of the arc rod (10); a chamfer (13) is provided at the relative position of the fixed flange (2), and a same fixed lifting rod (12) is provided between the two fixed folding rods (11).

2. The rotary cover with neck butt welding flange manhole according to claim 1 is characterized in that: A connecting neck (3) is provided on the side of the swivel flange (1) opposite to the fixed flange (2).

3. The rotary cover with neck butt welding flange manhole according to claim 2 is characterized in that: The connection neck (3) is in the shape of an inclined sleeve with a radius gradually decreasing toward the outside.

4. The rotary cover with neck butt welding flange manhole according to claim 1 is characterized in that: The sliding groove (7) is arranged along the vertical direction, and the top ends of the fixing rods (4) on both sides extend vertically upward.

5. The rotary cover with neck butt welding flange manhole according to claim 1 is characterized in that: The sliding column (5) is arranged along the horizontal direction.

6. The rotary cover with neck butt welding flange manhole according to claim 1, characterized in that: Rotating seats (9) are arranged on both sides of the surface of the rotating flange (1), and a rotating rod (8) is rotatably arranged in the rotating seat (9).

7. The rotary cover with neck butt welding flange manhole according to claim 1 is characterized in that: The inclination angle of the chamfer (13) of the fixed flange (2) is the same as the bending angle of the fixed folding rod (11).

8. The rotary cover with neck butt welding flange manhole according to claim 1 is characterized in that: The shape of the arc rod (10) coincides with the edge shape of the swivel flange (1).

Images