Low-pressure pipeline connecting structure
By designing the limit sleeve and convex structure at the connection of the low-pressure pipeline of the cleaning vehicle, and combining the connection method of bolts and nuts, the problems of insufficient sealing force and assembly errors are solved, and better sealing effect and stable connection are achieved. .
Patent Information
- Application Number
- CN202420846099.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-23
AI Technical Summary
The sealing structure at the connections of the low-pressure pipelines of the existing cleaning vehicle is prone to insufficient compression force and unevenness, resulting in poor sealing effect, and the rubber flange gasket is easily damaged by water, and errors are prone to occur during installation, which leads to difficulty in connection.
A low-pressure pipeline connection structure is designed, including a pipeline flange, a sealing flange and a movable flange. The sealing flange is equipped with a sealing ring groove and a convex edge. The inner side of the movable flange is equipped with a step groove, which is passed through bolts and nuts. Connect and set a flat washer and a spring washer on the bolt to achieve limit installation and compression of the seal ring.
It realizes zero-error assembly between pipeline flanges, avoids the sealing ring being extruded, ensures better sealing function of low-pressure pipelines and solves the connection difficulties caused by assembly errors.
Smart Images
Figure CN222142312U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile accessories, in particular to a low-pressure pipeline connection structure. Background Art
[0002] The sealing structure at the low-pressure pipeline connection of the cleaning vehicle is the part with the highest failure rate in the entire vehicle, which will seriously affect the vehicle's operating performance. The common pipeline connection structure on the market is to add a rubber flange gasket between the two pipeline flanges. The pipeline flange is a flat structure without bosses or grooves. The pipeline of the cleaning vehicle is long, and there will inevitably be errors during installation, resulting in insufficient and uneven clamping force of the rubber sealing ring between the two pipeline flanges for a long time. The tightening torque of the bolts cannot be accurately controlled, and the existing installation method is easy to squeeze the rubber flange gasket out of the pipeline connection flange. The insufficient clamping force is prone to being damaged by water. Therefore, it is necessary to invent a low-pressure pipeline connection structure. Utility Model Content
[0003] The utility model aims to provide a low-pressure pipeline connection structure to solve the problems that the rubber sealing ring in the existing low-pressure pipeline sealing structure of a cleaning vehicle has a poor sealing effect due to the lack of a limit, is prone to insufficient pressing force after long-term use, and is easily damaged by water.
[0004] The technical solution adopted by the utility model to solve its technical problems is:
[0005] A low-pressure pipeline connection structure includes a first pipeline and a second pipeline, wherein one end of the first pipeline is fixedly connected to a pipeline flange, and the end of the second pipeline facing the pipeline flange is fixedly connected to a sealing flange, and the end of the sealing flange facing the pipeline flange is provided with a sealing ring groove, and a sealing ring is arranged in the sealing ring groove, and the sealing ring is interference fit with the sealing ring groove and the pipeline flange.
[0006] Furthermore, the upper limit sleeve of the sealing flange is provided with a movable flange, and the movable flange is connected to the pipeline flange and presses the sealing flange onto the pipeline flange.
[0007] Furthermore, a convex edge is arranged on the outer side wall of the sealing flange, a step groove is arranged on the inner side wall of the movable flange, and the convex edge is limit-connected in the step groove.
[0008] Furthermore, the pipeline flange and the movable flange are connected by bolts and nuts.
[0009] Furthermore, the pipeline flange and the movable flange are both provided with bolt holes in an annular array at intervals, and the bolts pass through the pipeline flange and the movable flange in sequence and are connected by nuts.
[0010] Furthermore, a flat washer and a spring washer are sleeved on the bolt, and the bolt passes through the pipeline flange, the movable flange, the flat washer, and the spring washer in sequence.
[0011] The beneficial effects of the utility model are as follows: the utility model is installed in the low-pressure water circuit of the cleaning vehicle, and can achieve zero error in the assembly of the pipeline flange and the sealing ring of the cleaning vehicle. After the sealing ring is limitedly installed, the sealing ring will not be squeezed out of the flange, and zero error in the assembly between the pipeline flanges can be achieved, which solves the problem that pipelines are difficult to connect due to assembly errors, and achieves better low-pressure pipeline water circuit sealing function.
[0012] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a low-pressure pipeline connection structure diagram of the utility model.
[0014] Figure 2 The utility model is a cross-sectional view of a low-pressure pipeline connection structure.
[0015] Figure 3 This is an exploded view of a low-pressure pipeline connection structure of the utility model. DETAILED DESCRIPTION
[0016] like Figures 1 to 3 A low-pressure pipeline connection structure shown in the figure comprises a first pipeline 1 and a second pipeline 2, wherein one end of the first pipeline 1 is fixedly connected to a pipeline flange 11 by welding, and the end of the second pipeline 2 facing the pipeline flange 11 is fixedly connected to a sealing flange 21 by welding, and the end of the sealing flange 21 facing the pipeline flange 11 is provided with a sealing ring groove 22, and a sealing ring 3 is arranged in the sealing ring groove 22, and the sealing ring 3 is interference fit with the sealing ring groove 22 and the pipeline flange 11. The sealing ring 3 is a rubber O-ring.
[0017] Preferably, in combination with the above solution, the upper limit sleeve of the sealing flange 21 is provided with a movable flange 4, and the movable flange 4 is connected to the pipeline flange 11 and presses the sealing flange 21 onto the pipeline flange 11. The movable flange 4 is a movable component, which can be freely rotated and aligned with the bolt holes of the pipeline flange 11 to achieve the water channel sealing function of the low-pressure pipeline and solve the problem that pipelines cannot be connected due to assembly errors.
[0018] Preferably, in combination with the above solution, in order to better limit the installation, a flange 23 is provided on the outer wall of the sealing flange 21, and a step groove 41 is provided on the inner wall of the movable flange 4, and the flange 23 is limitedly connected in the step groove 41.
[0019] Preferably, in combination with the above solution, in order to facilitate installation and disassembly, the movable flange 4 is connected to the pipeline flange 11 through bolts 5 and nuts 8. The bolts 5 are M8×35 hexagonal head bolts, and the nuts 8 are hexagonal nuts. In this embodiment, six sets of bolts 5 and nuts 8 are provided.
[0020] Preferably, in combination with the above solution, in order to ensure stable connection, bolt holes in a circular array are arranged at intervals on the movable flange 4 and the pipeline flange 11, and the bolts 5 pass through the pipeline flange 11 and the movable flange 4 in sequence and are connected through nuts 8.
[0021] Preferably, in combination with the above solution, in order to ensure a more secure connection, a flat washer 6 and a spring washer 7 are also sleeved on the bolt 5, and the bolt 5 passes through the pipeline flange 11, the movable flange 4, the flat washer 6, and the spring washer 7 in sequence.
[0022] When assembling the utility model, first put the movable flange on the sealing flange 21, then install the sealing ring 3 in the sealing ring groove 22, and then pass the bolt 5 through the pipeline flange 11, the movable flange 4, the flat washer 6, and the spring washer 7 in sequence, and then screw on the nut 8, and apply a suitable tightening torque to ensure that the sealing ring 3 is compressed to ensure that there is no leakage under a specific pressure.
[0023] It should be noted that all directional indications in the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0024] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or they are directly applied to other occasions without improvement, they all fall within the protection scope of the utility model.
Claims
1. A low-pressure pipeline connection structure, comprising a first pipeline (1) and a second pipeline (2), wherein one end of the first pipeline (1) is fixedly connected to a pipeline flange (11), and one end of the second pipeline (2) facing the pipeline flange (11) is fixedly connected to a sealing flange (21), wherein: A sealing ring groove (22) is formed at one end of the sealing flange (21) facing the pipeline flange (11), a sealing ring (3) is arranged in the sealing ring groove (22), and the sealing ring (3) is interference fit with the sealing ring groove (22) and the pipeline flange (11).
2. The low-pressure pipeline connection structure according to claim 1 is characterized in that: The upper limit sleeve of the sealing flange (21) is provided with a movable flange (4), and the movable flange (4) is connected to the pipeline flange (11) and presses the sealing flange (21) onto the pipeline flange (11).
3. The low-pressure pipeline connection structure according to claim 2 is characterized in that: A convex edge (23) is arranged on the outer side wall of the sealing flange (21), and a step groove (41) is arranged on the inner side wall of the movable flange (4), and the convex edge (23) is limit-connected in the step groove (41).
4. The low-pressure pipeline connection structure according to claim 2 is characterized in that: The pipeline flange (11) is connected to the movable flange (4) via bolts (5) and nuts (8).
5. The low-pressure pipeline connection structure according to claim 4 is characterized in that: The pipeline flange (11) and the movable flange (4) are both provided with bolt holes in an annular array at intervals, and the bolts (5) pass through the pipeline flange (11) and the movable flange (4) in sequence and are connected via nuts (8).
6. The low-pressure pipeline connection structure according to claim 5 is characterized in that: The bolt (5) is also sleeved with a flat washer (6) and a spring washer (7). The bolt (5) passes through the pipeline flange (11), the movable flange (4), the flat washer (6), and the spring washer (7) in sequence.