Pipeline connecting structure

Abstract

The utility model discloses a pipeline connecting structure which comprises a connector and a flange, the connector comprises a large-diameter part and a small-diameter part, the connector is arranged in a center hole of the flange in a matched mode, the connector is connected with a pipeline, and the large-diameter part of the connector and the pipeline are located on the two sides of the flange respectively. Due to the fact that the pipeline connecting structure is of a split structure, the flange can rotate relative to the connector, a connecting hole site in the flange can be conveniently aligned with a flange connecting hole site in the liquid purification treatment equipment, and installation is convenient. Moreover, the flange can be a steel flange instead of a glass fiber reinforced plastic flange, so that the thickness is reduced, and meanwhile, the flange has enough connection strength.

Description

Technical Field

[0001] The utility model relates to a liquid purification treatment device, and particularly to a pipeline of the purification treatment device. Background Art

[0002] A fiberglass reinforced plastic pipeline is used for a liquid purification treatment device as a liquid transportation channel. As Figure 1 、 Figure 2 shown, the fiberglass reinforced plastic pipeline is installed on the liquid purification treatment device through a flange, and the fiberglass reinforced plastic pipeline and the flange are in a screwed connection relationship. This relationship is inconvenient for aligning the connection hole positions on the flange with the flange connection hole positions on the liquid purification treatment device. In addition, since the flange is made of fiberglass reinforced plastic, it needs to have a sufficient thickness to meet the strength requirement for stable connection. Content of the Utility Model

[0003] The technical problem solved by the utility model: For the fiberglass reinforced plastic pipeline used in a liquid purification treatment device, which is in a screwed connection relationship with the flange, it is not convenient for aligning the connection hole positions on the flange with the flange connection hole positions on the liquid purification treatment device, and in addition, since the flange is made of fiberglass reinforced plastic, it needs to have a sufficient thickness to meet the strength requirement for stable connection.

[0004] To solve the above technical problem, the utility model provides the following technical solution: A pipeline connection structure includes a connecting head and a flange. The connecting head includes a large-diameter part and a small-diameter part. The connecting head is fitted in the central hole of the flange. The connecting head is connected to the pipeline, and the large-diameter part of the connecting head and the pipeline are located on both sides of the flange respectively.

[0005] According to the above technical solution, this flange is connected to the flange on the liquid purification treatment device through a threaded connector. The large-diameter part of the connecting head is in close fit with the liquid inlet and outlet at the center of the flange on the liquid purification treatment device to meet the sealing requirement.

[0006] Since the pipeline connection structure of the utility model adopts a split structure, the flange can rotate relative to the connecting head, which is convenient for aligning the connection hole positions on the flange with the flange connection hole positions on the liquid purification treatment device, and the installation is convenient.

[0007] Since the pipeline connection structure of the utility model adopts a split structure, the flange can be made of a steel flange to replace the fiberglass reinforced plastic flange. While the thickness is reduced, it has sufficient connection strength.

[0008] The thickness of the flange is less than the length of the connecting head. The connecting head is made of fiberglass reinforced plastic, while the flange is made of stainless steel. Fiberglass reinforced plastic needs to have a sufficient size to meet the strength requirement, while stainless steel can meet the strength requirement with a smaller size.

[0009] The flange and the connector are in clearance fit. In this way, it is convenient for the flange to rotate relative to the connector, which is beneficial to align the connection holes on the flange with the connection holes on the liquid purification treatment equipment.

[0010] As a choice of connection method, the connector is provided with threaded holes, and the connector is screwed to the pipeline.

[0011] A transition arc structure is provided between the large-diameter part and the small-diameter part of the connector, and the transition arc structure abuts against one end of the central hole of the flange, which is beneficial to the stable fit between the flange and the connector. Brief Description of the Drawings

[0012] The following further describes the present utility model with reference to the drawings:

[0013] Figure 1 FIG. is an assembly schematic diagram of a fiberglass flange 21 and a pipeline 30 in the prior art;

[0014] Figure 2 is Figure 1 the left view of;

[0015] Figure 3 FIG. is a schematic diagram of the pipeline connection structure of the present utility model;

[0016] Figure 4 is Figure 3 the left view of;

[0017] Figure 5 is Figure 3 the sectional view of;

[0018] Figure 6 FIG. is a schematic diagram of the connector 10;

[0019] Figure 7 is Figure 6 the left view of.

[0020] Symbol description in the figure:

[0021] 10. Connector; 11. Threaded hole; 12. Transition arc structure;

[0022] 20. Flange of the present utility model; 21. Flange in the prior art;

[0023] 30. Pipeline. Detailed Embodiment

[0024] Combined with Figures 3 to 7 , a pipeline connection structure includes a connector 10 and a flange 20. The connector includes a large-diameter part and a small-diameter part. The connector is fitted in the central hole of the flange. The connector is connected to the pipeline 30. The large-diameter part of the connector and the pipeline are respectively located on both sides of the flange 20.

[0025] This flange 20 is connected to the flange on the liquid purification treatment equipment through threaded connectors. The large-diameter part of the connector 10 is in close fit with the liquid inlet and outlet at the center of the flange on the liquid purification treatment equipment to meet the sealing requirements.

[0026] The flange 20 can rotate relative to the connector 10, which is convenient for aligning the connection hole positions on the flange with the connection hole positions on the flange of the liquid purification treatment equipment.

[0027] The flange 20 is made of a steel flange, replacing the fiberglass flange in the prior art. Compared with the fiberglass flange, the thickness of the flange 20 of the present utility model is reduced, but it has sufficient connection strength.

[0028] The thickness of the flange 20 is less than the length of the connector 10. The connector 10 still uses fiberglass material and requires sufficient dimensions to meet the strength requirements, while the stainless steel flange can meet the strength requirements with smaller dimensions.

[0029] The flange 20 and the connector 10 are in clearance fit, which is convenient for the flange 20 to rotate relative to the connector 10 and is beneficial to aligning the connection hole positions on the flange with the connection hole positions on the flange of the liquid purification treatment equipment.

[0030] The connector 10 is provided with a threaded hole 11, and the connector is screwed to the pipeline 30.

[0031] A transition arc structure 12 is provided between the large-diameter part and the small-diameter part of the connector 10. The transition arc structure 12 abuts against one end of the central hole of the flange 20, which is beneficial to the stable fit between the flange and the connector 10.

[0032] The above content is only the preferred embodiment of the present utility model. For those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. The content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A pipe connection structure, comprising a connector (10) and a flange (20), characterized in that: The connector includes a large-diameter part and a small-diameter part. The connector is fitted in the central hole of the flange. The connector is connected to the pipe (30), and the large-diameter part of the connector and the pipe are located on both sides of the flange (20).

2. The pipe connection structure according to claim 1, wherein: The thickness of the flange (20) is less than the length of the connector (10).

3. A pipeline connection structure according to claim 1, characterized in that: The flange (20) and the connector (10) are in clearance fit.

4. A pipe connection structure according to claim 1, characterized in that: The connector (10) is provided with a threaded hole (11), and the connector is screwed to the pipe (30).

5. A pipe connection structure according to claim 1, characterized in that: A transition arc structure (12) is provided between the large-diameter part and the small-diameter part of the connector (10).

Images