Off-center rotatable connecting pipe device

Abstract

The utility model discloses an off-center rotatable connecting pipe device which comprises an air pipe, an eccentric pipe and a limiting assembly. The eccentric pipe is located between the two opposite air pipes, the eccentric pipe comprises vertical parts and a bent part, the vertical parts are installed at the two ends of the bent part, the vertical parts are arranged at the tail ends of the air pipes in a sleeving mode, and limiting assemblies are arranged between the vertical parts and the air pipes and used for limiting rotation of the eccentric pipe. The eccentric pipe and the limiting assembly are matched with each other, so that the problem that when a traditional roller needs to be replaced or maintained, supply of combustion-supporting air needs to be suspended, and the roller can be replaced only by detaching part of pipelines is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of roller kilns, in particular to an eccentric rotatable connecting pipe device. Background Art

[0002] A roller kiln generally includes a plurality of roller rods and an air duct network. The air duct network includes an upper air duct located above the roller rods, a lower air duct located below the roller rods, and a connecting air duct connecting the upper air duct and the lower air duct. Among them, the connecting air duct is generally vertically installed on the front and rear sides of the roller rods, inevitably occupying the channels for the installation and disassembly of the roller rods, and directly hindering the free installation (insertion and extraction) of the roller rods.

[0003] When a broken roller rod fails and needs to be replaced and repaired, the operator has to remove the corresponding pipe section on the connecting air duct before the roller rod can be replaced. This step is not only time-consuming and laborious, but also interrupts the supply of combustion-supporting air during the removal process, resulting in unstable combustion in the kiln, and even may affect the product quality and production efficiency.

[0004] In addition, in the daily maintenance of the roller kiln, batch replacement of roller rods is also a common operation. The existence of these downward connecting pipe sections also increases the replacement difficulty, reduces the maintenance efficiency, and has an adverse impact on the supply of combustion-supporting air in the kiln and the normal combustion of the spray gun during the replacement, further exacerbating the uncertainty of production operation. Content of the Utility Model

[0005] In view of the above defects, the utility model provides an eccentric rotatable connecting pipe device, which solves the problem that when traditional roller rods need to be replaced or maintained, the supply of combustion-supporting air needs to be suspended and some pipes need to be disassembled before the roller rods can be replaced, through the mutual cooperation of an eccentric pipe and a limiting component.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] An eccentric rotatable connecting pipe device includes an air duct, an eccentric pipe and a limiting component; the eccentric pipe is located between two opposite air ducts, the eccentric pipe includes a vertical part and a bent part, both ends of the bent part are provided with the vertical parts, the vertical parts are sleeved on the ends of the air ducts, and a limiting component is arranged between the vertical parts and the air ducts, and the limiting component is used to limit the rotation of the eccentric pipe.

[0008] The axes of the two vertical parts of the eccentric pipe are located on the same vertical line.

[0009] The limiting component includes a first surrounding edge and a second surrounding edge. The first surrounding edge is arranged on the outer side of the air duct, and the second surrounding edge is arranged at the end of the vertical part close to the air duct;

[0010] The second surrounding edge includes an L-shaped portion and an abutting portion. The horizontal end of the L-shaped portion is perpendicularly connected to the end of the vertical portion, and the vertical end of the L-shaped portion is perpendicularly connected to the abutting portion;

[0011] The first surrounding edge is connected to the abutting portion through a fixing member, and the end of the air duct is rotatably connected to the L-shaped portion.

[0012] The L-shaped portion, the air duct, and the first surrounding edge form a cavity. A first rotation limiting block is arranged in the cavity. The end of the air duct abuts against the side wall of the first rotation limiting block, and the cavity is filled with a sealing member.

[0013] A rotating block and a second rotation limiting block are arranged in the cavity. The first rotation limiting block is installed at the horizontal end of the L-shaped portion. The second rotation limiting block is connected to the first surrounding edge. The first rotation limiting block and the second rotation limiting block respectively clamp the upper and lower sides of the rotating block;

[0014] The cross-section of the rotating block is circular.

[0015] Both the first rotation limiting block and the second rotation limiting block are provided with inwardly concave arc surfaces. The two arc surfaces are arranged oppositely, and both sides of the rotating block are respectively located in the two arc surfaces.

[0016] A connecting member is threadedly connected to the side of the second rotation limiting block away from the first rotation limiting block. The end of the connecting member away from the second rotation limiting block is threadedly connected to the first surrounding edge.

[0017] The technical solution of the present utility model may include the following beneficial effects:

[0018] 1. Through the mutual cooperation of the eccentric pipe and the limiting assembly, the problem that when a traditional roller needs to be replaced or maintained, the supply of combustion-supporting air needs to be suspended and some pipelines need to be disassembled to replace the roller is solved.

[0019] 2. The design that the axes of the two vertical portions coincide enables the eccentric pipe to maintain better stability when rotating or bearing external forces, reduces the stress concentration phenomenon caused by eccentricity, thereby prolongs the service life of the roller hearth kiln, and reduces the failure risk caused by vibration or impact. Description of the Drawings

[0020] Figure 1 is a cross-sectional view of an eccentric rotatable connecting pipe device according to an embodiment of the present utility model;

[0021] Figure 2 is Figure 1 the enlarged view of part A in

[0022] Among them, 1 is the air duct; 2 is the eccentric pipe; 21 is the vertical part; 22 is the bending part; 3 is the limiting component; 31 is the first surrounding edge; 32 is the second surrounding edge; 33 is the L-shaped part; 34 is the abutting part; 35 is the fixing part; 36 is the sealing part; 37 is the first rotation limiting block; 38 is the rotating block; 39 is the second rotation limiting block; 40 is the arc surface; 41 is the connecting part. Detailed implementation manners

[0023] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and through specific implementation manners.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "middle", "upper", "lower", "left", "right", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0025] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.

[0026] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "splicing", "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] The following combines Figures 1 to 2 , and describes a decentered rotatable connecting pipe device according to an embodiment of the present utility model.

[0028] A decentered rotatable connecting pipe device includes an air duct 1, an eccentric pipe 2, and a limiting component 3; the eccentric pipe 2 is located between two opposite air ducts 1, the eccentric pipe 2 includes a vertical part 21 and a bending part 22, both ends of the bending part 22 are provided with the vertical part 21, the vertical part 21 is sleeved on the end of the air duct 1, and a limiting component 3 is arranged between the vertical part 21 and the air duct 1, and the limiting component 3 is used to limit the rotation of the eccentric pipe 2.

[0029] The two vertical parts 21 are respectively connected to the air ducts 1 at both ends, so that the air ducts 1 and the eccentric pipe 2 are connected and communicate with each other, effectively ensuring that the flame-retardant air moves within the air duct 1 network. Moreover, the bending part 22 is recessed inward to form a void, which can cleverly avoid the roller bars that may obstruct the smooth flow of air.

[0030] When the roller bar installed opposite to the bending part 22 breaks, after releasing the limiting effect of the limiting component 3, the staff can rotate the eccentric pipe 2 so that the bending part 22 is separated from the broken roller bar, enabling the roller bar to be disassembled from the void of the bending part 22 in the roller hearth kiln without pausing the supply of combustion-supporting air, quickly replacing the roller bar, and reducing the risk of production interruption caused by replacing the roller bar.

[0031] The limiting component 3 can not only limit the rotation of the eccentric pipe 2, but also ensure the stability of the connection of the air duct 1, effectively preventing problems such as leakage of combustion-supporting air and unstable combustion caused by pipeline loosening or detachment.

[0032] In this solution, through the mutual cooperation of the eccentric pipe 2 and the limiting component 3, the problem that traditional roller bars need to pause the supply of combustion-supporting air and disassemble some pipelines to replace the roller bars when replacement or maintenance is required is solved.

[0033] The axes of the two vertical parts 21 of the eccentric pipe 2 are both on the same vertical line.

[0034] The axes of the vertical parts 21 at both ends are on the same vertical line, and the airflow in the air duct 1 can maintain a more uniform and stable distribution when passing through the eccentric pipe 2, reducing noise and vibration generated by airflow disorder.

[0035] Moreover, the design with the axes of the two vertical parts 21 coinciding enables the eccentric pipe 2 to maintain better stability when rotating or bearing external forces, reducing the stress concentration phenomenon caused by eccentricity, thereby extending the service life of the roller hearth kiln and reducing the risk of failures caused by vibration or impact.

[0036] The limiting component 3 includes a first surrounding edge 31 and a second surrounding edge 32. The first surrounding edge 31 is provided on the outer side of the air duct 1, and the second surrounding edge 32 is provided at the end of the vertical part 21 close to the air duct 1;

[0037] The second surrounding edge 32 includes an L-shaped part 33 and an abutting part 34. The horizontal end of the L-shaped part 33 is perpendicularly connected to the end of the vertical part 21, and the vertical end of the L-shaped part 33 is perpendicularly connected to the abutting part 34;

[0038] The first surrounding edge 31 is connected to the abutting part 34 through a fixing member 35, and the end of the air duct 1 is rotatably connected to the L-shaped part 33.

[0039] A second surrounding edge 32 is provided at the end of the vertical portion 21. At this time, the end of the air duct 1 can move within the gap in the L-shaped portion 33, and the abutting portion 34 abuts against the first surrounding edge 31, which can initially limit the movement range of the air duct 1 and the eccentric pipe 2, so that the eccentric pipe 2 can only rotate around the end of the air duct 1, improving the working experience of the staff and avoiding the situation where the eccentric pipe 2 and the air duct 1 are separated during the rotation process.

[0040] Among them, the L-shaped portion 33 connects the abutting portion 34 and the vertical portion 21. The abutting portion 34 at the bottom can provide a supporting force for the eccentric pipe 2, so that the eccentric pipe 2 is located between the two air ducts 1. Moreover, the end of the air duct 1 is rotatably connected to the inner wall of the L-shaped portion 33, which can limit the movement range of the eccentric pipe 2.

[0041] It should be noted that the fixing member 35 is preferably a bolt. By tightly connecting the first surrounding edge 31 and the abutting portion 34 through the fixing member 35, it can ensure that the two end portions of the eccentric pipe 2 are fixedly connected to the two opposite air ducts 1, ensuring that during the operation process, the eccentric pipe 2 is always connected to the adjacent two branch pipes, effectively preventing the eccentric pipe 2 from shaking or falling off in the vertical direction, and enhancing the stability of the overall structure.

[0042] The L-shaped portion 33, the air duct 1 and the first surrounding edge 31 form a cavity. A first rotation limiting block 37 is arranged in the cavity. The end of the air duct 1 abuts against the side wall of the first rotation limiting block 37, and a sealing member 36 is filled in the cavity.

[0043] In order to further limit the movement range of the eccentric pipe 2, the first rotation limiting block 37 is located in the cavity. When the eccentric pipe 2 is rotated, the end of the air duct 1 always abuts against the side wall of the first rotation limiting block 37, effectively preventing the eccentric pipe 2 from tilting during the rotation process.

[0044] In addition, a sealing member 36 is filled in the cavity. The sealing member 36 is preferably asbestos. Asbestos can effectively fill the tiny gap between the air duct 1 and the second surrounding edge 32, preventing the leakage of the gas mixture in the pipeline and reducing energy waste.

[0045] A rotating block 38 and a second rotation limiting block 39 are arranged in the cavity. The first rotation limiting block 37 is installed at the horizontal end of the L-shaped portion 33. The second rotation limiting block 39 is connected to the first surrounding edge 31. The first rotation limiting block 37 and the second rotation limiting block 39 respectively clamp the upper and lower sides of the rotating block 38;

[0046] The cross-section of the rotating block 38 is circular.

[0047] When the eccentric tube 2 is rotated, the eccentric tube 2 drives the second surrounding edge 32 and the first rotation limit block 37 to move. Since the cross-section of the rotation block 38 is designed to be circular, the friction between the rotation block 38 and the first rotation limit block 37 and between the rotation block 38 and the second rotation limit block 39 can be reduced during the rotation process, so that the staff can rotate the eccentric tube 2 more easily.

[0048] The first rotation limiting block 37 and the second rotation limiting block 39 are both provided with an inwardly concave arc surface 40 , the two arc surfaces 40 are arranged opposite to each other, and the two sides of the rotation block 38 are respectively located in the two arc surfaces 40 .

[0049] The design of the arc surface 40 can disperse the stress generated during the rotation of the first rotation limit block 37 and the second rotation limit block 39, reduce the stress concentration phenomenon, extend the service life of the first rotation limit block 37 and the second rotation limit block 39, and reduce the risk of damage caused by stress concentration.

[0050] A connecting piece 41 is threadedly connected to a side of the second rotation limiting block 39 away from the first rotation limiting block 37 , and an end of the connecting piece 41 away from the second rotation limiting block 39 is threadedly connected to the first surrounding edge 31 .

[0051] It is worth noting that the connecting member 41 is preferably a screw. The end of the screw thread passes through the first surrounding edge 31 and is then rotatably connected to the second rotation limit block 39. Therefore, by rotating the connecting member 41, the second rotation limit block 39 can be pressed against the rotation block 38, ensuring a tight connection between the second rotation limit block 39, the connecting member 41 and the first surrounding edge 31, thereby preventing the eccentric tube 2 from loosening or falling off during the rotation process.

[0052] When the roller needs to be installed or replaced, the connecting member 41 is rotated in the opposite direction to release the pressing force of the second rotation limit block 39 on the rotation block 38, and the eccentric tube 2 can be rotated to replace the broken roller.

[0053] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. An eccentric rotatable connecting pipe device, characterized in that It includes an air duct, an eccentric pipe and a limiting component; the eccentric pipe is located between two opposite air ducts, the eccentric pipe includes a vertical portion and a bent portion, both ends of the bent portion are provided with the vertical portions, the vertical portions are sleeved on the ends of the air ducts, and a limiting component is arranged between the vertical portions and the air ducts, and the limiting component is used to limit the rotation of the eccentric pipe.

2. The eccentric rotatable connecting pipe device according to claim 1, wherein The axes of the two vertical portions of the eccentric pipe are located on the same vertical line.

3. The eccentric rotatable connecting pipe device according to claim 1, characterized in that, The limiting component includes a first surrounding edge and a second surrounding edge, the first surrounding edge is arranged on the outer side of the air duct, and the second surrounding edge is arranged at the end of the vertical portion close to the air duct; The second surrounding edge includes an L-shaped portion and an abutting portion, the horizontal end of the L-shaped portion is vertically connected to the end of the vertical portion, and the vertical end of the L-shaped portion is vertically connected to the abutting portion; The first surrounding edge is connected to the abutting portion through a fixing member, and the end of the air duct is rotatably connected to the L-shaped portion.

4. The eccentric rotatable connecting pipe device according to claim 3, characterized in that, The L-shaped portion, the air duct and the first surrounding edge form a cavity, a first rotation limiting block is arranged in the cavity, the end of the air duct abuts against the side wall of the first rotation limiting block, and a sealing member is filled in the cavity.

5. A decentered rotatable connecting pipe device according to claim 4, characterized in that, A rotating block and a second rotation limiting block are arranged in the cavity, the first rotation limiting block is installed at the horizontal end of the L-shaped portion, the second rotation limiting block is connected to the first surrounding edge, and the first rotation limiting block and the second rotation limiting block respectively clamp the upper and lower sides of the rotating block; The cross section of the rotating block is circular.

6. The eccentric rotatable connecting pipe device according to claim 5, characterized in that, Both the first rotation limiting block and the second rotation limiting block are provided with inwardly concave arc surfaces, the two arc surfaces are arranged oppositely, and both sides of the rotating block are respectively located in the two arc surfaces.

7. A kind of eccentric rotatable connecting pipe device according to claim 5, characterized in that, A connecting member is threadedly connected to the side of the second rotation limiting block away from the first rotation limiting block, and the end of the connecting member away from the second rotation limiting block is threadedly connected to the first surrounding edge.

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