A gas pipe sealing connection structure

Abstract

The utility model discloses a kind of gas pipeline sealing connection structure, it is characterized in that, including connecting ring and the first pipeline to be connected, second pipeline, connecting ring is sleeved on second pipeline, and cam pressing mechanism is equipped between connecting ring and second pipeline;The butt joint end of first pipeline is spaced apart and is equipped with multiple positioning protrusions along ring direction, connecting ring is sleeved on each positioning protrusion, and the butt joint end of first pipeline is abutted at the bottom end of connecting ring;The bottom end of connecting ring is equipped with first annular sink, and the first annular sink is equipped with self-adapting deformation elastic sealing layer.The utility model is applied to gas pipeline connection field, can realize the stable sealing connection between pipeline and dust collector in range hood equipment, ensure zero leakage under vibration state, and can realize quick positioning, dismounting.

Description

Technical Field

[0001] This utility model relates to the field of gas pipeline connection technology, specifically a gas pipeline sealing connection structure. Background Technology

[0002] During the operation of the tobacco processing equipment, the dust in the tobacco shreds is separated by a tobacco shred separation device and then carried by a pressurized gas through a pipeline to a dust collector for collection. In this process, the tobacco shred separation device separates the dust through vibration; therefore, the pipeline, dust collector, and the connecting structure between them operate under specific gas pressure and vibration conditions.

[0003] Currently, the connection between the dust collector and the connecting structure in smoke extraction equipment is mostly a rigid conical connection. This means that a conical protrusion 001 is provided at the end of the dust collector's inlet pipe, and a strip-shaped groove that mates with the conical protrusion is provided at the end of the connecting structure 002. Figure 1 As shown. However, due to manufacturing reasons, the angles of the two cones in a rigid connection are inconsistent, resulting in a circular line contact between the inner and outer cones. When operating in a vibrating environment for a long time, this can easily cause deformation of the contact surface, leading to pressurized gas leakage. Moreover, because the contact surface is rigid, strict control of the form and position deviations and dimensional deviations of the contact surface is required to ensure a good seal.

[0004] In addition, the connection structure and pipes in current smoke machine equipment usually use multiple cam clamping mechanisms distributed in the circumferential direction to apply axial force for clamping. However, it is difficult to ensure that the positions of multiple cam clamping mechanisms are consistent, so the axial force generated when applying axial force is inconsistent, resulting in inconsistent sealing force of rigid contact sealing surfaces. Under long-term operation in a vibrating environment, different deformations will occur, causing leakage. Utility Model Content

[0005] To address the shortcomings of the existing technology, this utility model provides a gas pipeline sealing connection structure that can achieve a stable sealing connection between the pipeline and the dust collector in the smoke machine equipment, ensure zero leakage when operating under vibration, and enable rapid positioning and disassembly.

[0006] To achieve the above objectives, this utility model provides a gas pipeline sealing connection structure, including a connecting ring and a first pipeline and a second pipeline to be connected. The connecting ring is sleeved on the second pipeline, and a cam pressing mechanism is provided between the connecting ring and the second pipeline. The first pipe has a plurality of positioning protrusions spaced circumferentially at its docking end, and the connecting ring is sleeved on each of the positioning protrusions, with the bottom end of the connecting ring abutting against the docking end of the first pipe. The bottom end of the connecting ring is provided with a first annular groove, and the first annular groove is provided with an elastic sealing layer that can adapt to deformation.

[0007] In one embodiment, the cam clamping mechanism includes a connecting bolt, a roller, a strip groove and a threaded hole, the threaded hole being provided on the second pipe, the strip groove being provided on the connecting ring, and the two ends of the strip groove being spaced apart along the axial direction of the connecting ring; The connecting bolt includes a nut, a roller section and a threaded section connected in sequence. The threaded section is connected to the threaded hole. The roller is sleeved on the roller section and is located in the strip groove and in contact with the groove wall of the strip groove.

[0008] In one embodiment, the strip groove includes a first groove segment and a second groove segment, wherein the rise angle of the first groove segment on the connecting ring is greater than the rise angle of the second groove segment on the connecting ring.

[0009] In one embodiment, there are multiple cam clamping mechanisms, and each of the cam clamping mechanisms is distributed at circumferential intervals along the connecting ring.

[0010] In one embodiment, a cam operating lever is provided on the outer wall of the connecting ring to drive the connecting ring to rotate.

[0011] In one embodiment, a sealing structure is provided between the inner wall of the connecting ring and the outer wall of the second pipe.

[0012] In one embodiment, a second annular groove is provided on the outer wall of the second pipe, and the sealing structure is a wool felt disposed in the second annular groove.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects: 1. This utility model provides an adaptively deformable elastic sealing layer between the bottom end of the connecting ring and the mating end of the first pipe, enabling the connection structure to achieve stress-free operation and maintain a long-term sealing effect in pressurized airflow and vibration environments. It also facilitates quick assembly and disassembly without leakage. 2. By setting an elastic sealing layer, this utility model provides dynamic compensation for a certain degree of deflection between the bottom end of the connecting ring and the docking end of the first pipe, making maintenance and disassembly operations convenient and quick, with good manufacturability and low production costs.

[0014] 3. In the preferred embodiment of this utility model, the strip groove is set as a first groove segment with a large lifting angle and a second groove segment with a small lifting angle. The first groove segment can realize quick positioning and quick assembly and disassembly, while the second groove segment can realize precise pressing and ensure reliable self-locking, maintain the sealing force at all times, and ensure zero leakage when working under vibration. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the connection structure between the dust collector and the connecting structure in the prior art; Figure 2 This is an isometric view of the gas pipeline sealing connection structure in an embodiment of this utility model; Figure 3 This is an isometric view of the first pipe in an embodiment of this utility model; Figure 4 This is an isometric view of the second pipe in an embodiment of this utility model; Figure 5 This is a partial cross-sectional view of the gas pipeline sealing connection structure in an embodiment of this utility model; Figure 6 This is an isometric view of the connecting bolts in an embodiment of this utility model; Figure 7 This is a schematic diagram of the strip groove in an embodiment of the present invention.

[0017] Reference numerals: conical protrusion 001, connecting structure 002, connecting ring 1, first annular groove 101, cam operating lever 102, first pipe 2, positioning protrusion 201, second pipe 3, second annular groove 301, elastic sealing layer 4, connecting bolt 5, nut 501, roller section 502, threaded section 503, roller 6, strip groove 7, first groove section 701, second groove section 702, threaded hole 8, wool felt 9.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0021] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal connection of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0024] like Figure 2 The diagram illustrates a gas pipeline sealing connection structure disclosed in this embodiment. It mainly includes a connecting ring 1 and a first pipeline 2 and a second pipeline 3 to be connected. The connecting ring 1 is sleeved on the second pipeline 3, and a cam clamping mechanism is provided between the connecting ring 1 and the second pipeline 3. The mating end of the first pipeline 2 has multiple positioning protrusions 201 spaced circumferentially. The connecting ring 1 is sleeved on each positioning protrusion 201, and the bottom end of the connecting ring 1 abuts against the mating end of the first pipeline 2. The bottom end of the connecting ring 1 has a first annular groove 101, and the first annular groove 101 contains an elastic sealing layer 4 capable of adaptive deformation. For example, a hollow or U-shaped rubber ring can be used as the elastic sealing layer 4.

[0025] The gas pipeline sealing connection structure in this embodiment is mainly used for the connection between the conveying pipeline on the smoke machine equipment and the dust collector, that is, the first pipeline 2 is the input pipeline on the dust collector, such as... Figure 3As shown, its docking end has three evenly distributed positioning protrusions 201; the second pipe 3 is the conveying pipe on the smoke machine equipment. In the smoke machine equipment, both the dust collector and the conveying pipe are fixedly connected to the outside of the smoke machine equipment with a small gap between them. During operation, the dust collector and the conveying pipe are sealed together using structures such as the connecting ring 1. When repairing other devices inside the smoke machine equipment, the connection structure in this embodiment can also enable the quick removal of the dust collector.

[0026] The gas pipeline sealing connection structure in this embodiment features an adaptively deformable elastic sealing layer 4 between the bottom end of the connecting ring 1 and the mating end of the first pipeline 2. This allows for stress-free connection between the first pipeline 2 and the connecting ring 1, maintaining a long-term seal even under pressure, airflow, and vibration. It also facilitates quick and leak-free assembly and disassembly. Furthermore, the elastic sealing layer 4 provides dynamic compensation for the deflection between the bottom end of the connecting ring 1 and the mating end of the first pipeline 2, making maintenance and disassembly convenient and quick, with good manufacturability and low production costs.

[0027] In practical implementation, the cam clamping mechanism includes a connecting bolt 5, a roller 6, a slot 7, and a threaded hole 8. The threaded hole 8 is located on the second pipe 3, i.e. Figure 4 As shown. The strip groove 7 is provided on the connecting ring 1, and the two ends of the strip groove 7 are spaced apart along the axial direction of the connecting ring 1. (Reference) Figure 5 , Figure 6 The connecting bolt 5 includes a nut 501, a roller section 502 and a threaded section 503 connected in sequence. The threaded section 503 is connected to the threaded hole 8. The roller 6 is sleeved on the roller section 502. The roller 6 is located in the strip groove 7 and is in contact with the groove wall on one side of the strip groove 7.

[0028] refer to Figure 7 In this embodiment, preferably, the strip groove 7 includes a first groove segment 701 and a second groove segment 702. The rise angle of the first groove segment 701 on the connecting ring 1 is greater than the rise angle of the second groove segment 702 on the connecting ring 1. That is, the distance between the two ends of the first groove segment 701 along the axial direction of the connecting ring 1 is greater than the distance between the two ends of the second groove segment 702 along the axial direction of the connecting ring 1. This allows the first groove segment 701 to achieve quick positioning and quick assembly / disassembly, and the second groove segment 702 to achieve precise clamping and ensure reliable self-locking, maintaining a constant sealing force and ensuring zero leakage when working under vibration.

[0029] More preferably, there are multiple cam clamping mechanisms, and each cam clamping mechanism is distributed at intervals along the circumference of the connecting ring 1, that is, multiple cam clamping mechanisms are used to provide axial sealing force, thereby improving the sealing effect.

[0030] In the specific implementation process, a cam operating rod 102 is provided on the outer wall of the connecting ring 1 to drive the connecting ring 1 to rotate, thereby realizing the axial pressing and sealing of the cam pressing mechanism.

[0031] In the specific implementation process, a sealing structure is provided between the inner wall of the connecting ring 1 and the outer wall of the second pipe 3. Specifically, a second annular groove 301 is provided on the outer wall of the second pipe 3, and the sealing structure is a wool felt 9 provided in the second annular groove 301, thereby further improving the sealing effect of the gas pipeline sealing connection structure.

[0032] The above description is only a preferred embodiment of the present utility model and does not limit the scope of protection of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A gas pipeline sealing connection structure, characterized in that, It includes a connecting ring and a first pipe and a second pipe to be connected. The connecting ring is sleeved on the second pipe, and a cam clamping mechanism is provided between the connecting ring and the second pipe. The first pipe has a plurality of positioning protrusions spaced circumferentially at its docking end, and the connecting ring is sleeved on each of the positioning protrusions, with the bottom end of the connecting ring abutting against the docking end of the first pipe. The bottom end of the connecting ring is provided with a first annular groove, and the first annular groove is provided with an elastic sealing layer that can adapt to deformation.

2. The gas pipeline sealing connection structure according to claim 1, characterized in that, The cam clamping mechanism includes a connecting bolt, a roller, a strip groove and a threaded hole. The threaded hole is located on the second pipe, and the strip groove is located on the connecting ring. The two ends of the strip groove are spaced apart along the axial direction of the connecting ring. The connecting bolt includes a nut, a roller section and a threaded section connected in sequence. The threaded section is connected to the threaded hole. The roller is sleeved on the roller section and is located in the strip groove and in contact with the groove wall of the strip groove.

3. The gas pipeline sealing connection structure according to claim 2, characterized in that, The strip groove includes a first groove segment and a second groove segment, wherein the helix angle of the first groove segment on the connecting ring is greater than the helix angle of the second groove segment on the connecting ring.

4. The gas pipeline sealing connection structure according to claim 1, 2, or 3, characterized in that, The number of cam clamping mechanisms is multiple, and each of the cam clamping mechanisms is distributed at intervals along the circumference of the connecting ring.

5. The gas pipeline sealing connection structure according to claim 1, 2, or 3, characterized in that, The outer wall of the connecting ring is provided with a cam operating rod to drive the connecting ring to rotate.

6. The gas pipeline sealing connection structure according to claim 1, 2, or 3, characterized in that, A sealing structure is provided between the inner wall of the connecting ring and the outer wall of the second pipe.

7. The gas pipeline sealing connection structure according to claim 6, characterized in that, The outer wall of the second pipe is provided with a second annular groove, and the sealing structure is wool felt provided in the second annular groove.

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