Flexible sealing connecting piece for multi-layer corrugated pipe of vacuum machine

Abstract

The utility model provides a vacuum machine multi-layer corrugated pipe flexible sealing connecting piece, and relates to the field of corrugated pipe flexible sealing connecting pieces, the vacuum machine multi-layer corrugated pipe flexible sealing connecting piece comprises a connecting piece main body, the connecting piece main body comprises connecting ends arranged at the two ends and a middle hose connected between the connecting ends, the connecting ends comprise connecting pipes connected to the two ends of the middle hose, and the middle hose is connected with the connecting pipes. The outer end of the connecting pipe is rotationally connected with a rotating ring, the outer end of the rotating ring is connected with a limiting ring, the inner wall of the limiting ring is connected with a supporting ring, the outer wall of the limiting ring is connected with an outer hose, a hose clamp is arranged on the outer side of the outer hose, an outer sealing ring is arranged on the outer wall of the supporting ring, and meanwhile an inner sealing ring is arranged on the inner wall of the outer hose. The connecting piece has internal supporting performance, deformation of the corrugated pipe is avoided, and meanwhile the sealing effect of overall connection is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of flexible sealing connectors for bellows, specifically to a flexible sealing connector for a multi-layer bellows in a vacuum machine. Background Technology

[0002] Vacuum bellows used with vacuum machines are generally made of stainless steel to compensate for the mutual displacement of pipes or machine / equipment connection ends, absorb vibration energy, and play a role in vibration reduction and noise reduction. They possess multiple characteristics such as good flexibility, light weight, corrosion resistance, fatigue resistance, and resistance to high and low temperatures. However, the bellows need to be sealed together using flexible connectors. A search revealed existing technology (publication number: CN213576105U), which describes "a bellows connector, including a rubber hose, wherein one end of the rubber hose has a larger diameter than the other end. The larger diameter end of the rubber hose is sleeved on the outside of the output end of a solar collector and fixed by a first clamp, and the smaller diameter end of the rubber hose is sleeved on the outside of the bellows and fixed by a second clamp. The beneficial effects of this utility model are: the output end of the solar collector and the bellows are flexibly connected through the rubber hose, resulting in a firm connection and good sealing; because the rubber hose is soft, the positional requirements of the pipe fittings are lower."

[0003] Although the existing corrugated pipe connectors achieve flexible connection, during use, due to the bending and expansion properties of the corrugated pipe itself, and the lack of internal support during connection, it is difficult to control the tightening force of the outer clamps when tightening, so as to ensure a tight connection while avoiding deformation of the corrugated pipe itself. Consequently, the connection with the rubber hose cannot guarantee a seal. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, a flexible sealing connector for a multi-layer bellows vacuum machine is provided to solve the problems mentioned in the background.

[0005] To achieve the above objectives, a flexible sealing connector for a multi-layer corrugated pipe of a vacuum machine is provided, comprising: a connector body, the connector body including connecting ends at both ends, and an intermediate flexible hose connecting the connecting ends, the connecting ends including connecting pipes connected to both ends of the intermediate flexible hose, the outer end of the connecting pipe being rotatably connected to a rotating ring, and the outer end of the rotating ring being connected to a limiting ring, the inner wall of the limiting ring being connected to a support ring, and the outer wall of the limiting ring being connected to an outer flexible hose, and the outer side of the outer flexible hose being provided with a hose clamp, the outer wall of the support ring being provided with an outer sealing ring, and the inner wall of the outer flexible hose being provided with an inner sealing ring.

[0006] Furthermore, both the outer hose and the intermediate hose are equipped with rubber hoses, and the outer end of the outer hose extends outward beyond the outer edge of the limiting ring.

[0007] Furthermore, the outer end of the support ring extends beyond the limiting ring, and a sandwich space is provided between the support ring and the outer hose.

[0008] Furthermore, both the outer and inner sealing rings are provided in four sets, and the outer and inner sealing rings are respectively clamped on the outer and inner walls of the bellows.

[0009] Furthermore, the inner wall of the inner port of the rotating ring is provided with a first slot and a second slot, and an annular groove is provided between the first slot and the second slot.

[0010] Furthermore, a first sealing ring is embedded in the first slot, a second sealing ring is embedded in the second slot, and a fixing ring is rotatably connected in the annular groove.

[0011] Furthermore, the fixing ring is fixed to the outer wall of the connecting pipe, and the first sealing ring and the second sealing ring are located on both sides of the fixing ring.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. During connection, by rotating the rotating ring, the space between the outer hose and the support ring is used to insert one end of the corrugated pipe into the space. The end of the outer hose is limited by the limiting ring. Then, the outer hose is locked by the hose clamp, which, together with the support ring, clamps the end of the corrugated pipe, thereby avoiding deformation of the corrugated pipe caused by excessive hose clamp locking force.

[0014] 2. The first and second sealing rings are used to achieve a rotational connection seal between the connecting pipe and the rotating ring. At the same time, the outer and inner sealing rings are used to achieve a connection seal after the outer hose and support ring clamp the bellows. Thus, the sealing performance of the connection between the main body of the connector and the bellows is guaranteed through dual-point sealing. Meanwhile, the use of the intermediate hose allows the bellows to maintain the flexibility of the structure after connection, thereby achieving a flexible connection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the connection structure between the connector body and the corrugated pipe in an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the connector body and the bellows in an embodiment of the present utility model.

[0017] Figure 3 This is a schematic diagram of the structure at point A in icon 2 of this utility model embodiment.

[0018] Figure 4 This is a partial structural diagram of the connector according to an embodiment of the present utility model.

[0019] In the diagram: 1. Connector body; 2. Connecting end; 21. Connecting pipe; 22. Rotating ring; 221. First slot; 222. First sealing ring; 223. Fixing ring; 224. Second slot; 225. Second sealing ring; 226. Ring groove; 23. Limiting ring; 24. Support ring; 241. Outer sealing ring; 25. Outer hose; 251. Inner sealing ring; 26. Hose clamp; 3. Intermediate hose. Detailed Implementation

[0020] Reference Figures 1 to 4 As shown, this utility model provides a flexible sealing connector for a multi-layer corrugated pipe of a vacuum machine, including: a connector body 1, the connector body 1 including connecting ends 2 at both ends, and an intermediate hose 3 connected between the connecting ends 2, the connecting ends 2 including connecting pipes 21 connected to both ends of the intermediate hose 3, and a rotating ring 22 rotatably connected to the outer end of the connecting pipe 21, and a limiting ring 23 connected to the outer end of the rotating ring 22, a support ring 24 connected to the inner wall of the limiting ring 23, and an outer hose 25 connected to the outer wall of the limiting ring 23, and a hose clamp 26 provided on the outer side of the outer hose 25, an outer sealing ring 241 provided on the outer wall of the support ring 24, and an inner sealing ring 251 provided on the inner wall of the outer hose 25.

[0021] Specifically, the hose clamp 26 can be provided in multiple sizes depending on the length of the support ring 24.

[0022] Specifically, the outer flexible tube 25 is connected to the outer wall of the limiting ring 23 by adhesive bonding, and the limiting ring 23 and the rotating ring 22 are designed as an integrated connection structure.

[0023] Specifically, the outer wall of the support ring 24 is provided with an annular groove, and the outer sealing ring 241 is engaged in the annular groove, and the outer sealing ring 241 protrudes from the outer wall of the support ring 24.

[0024] Specifically, the inner sealing ring 251 is bonded to the inner wall of the outer hose 25, and at the same time, the inner sealing ring 251 and the outer sealing ring 241 are gradually squeezed into the corrugated gap of the bellows when the hose clamp 26 is locked.

[0025] like Figure 2 , Figure 3 and Figure 4In the middle, both the outer hose 25 and the intermediate hose 3 are equipped with rubber hoses, and the outer end of the outer hose 25 extends outward beyond the outer edge of the limiting ring 23. The outer edge of the support ring 24 extends outward beyond the limiting ring 23, and there is a sandwich space between the support ring 24 and the outer hose 25. There are four sets of outer sealing rings 241 and inner sealing rings 251, and the outer sealing rings 241 and inner sealing rings 251 are respectively clamped on the outer wall and inner wall of the corrugated pipe. The inner wall of the inner port of the rotating ring 22 has a first slot 221 and a second slot 224, and an annular groove 226 is formed between the first slot 221 and the second slot 224. The first sealing ring 222 is embedded in the first slot 221, and the second sealing ring 225 is embedded in the second slot 224. At the same time, a fixing ring 223 is rotatably connected in the annular groove 226. The fixing ring 223 is fixed to the outer wall of the connecting pipe 21, and the first sealing ring 222 and the second sealing ring 225 are respectively located on both sides of the fixing ring 223.

[0026] Specifically, the rubber hose is made of corrosion-resistant rubber (fluororubber can be used), and the outer side is equipped with a metal wire braided armor layer to further improve the corrosion resistance and torsional strength of the middle hose 3.

[0027] Specifically, the interlayer space between the support ring 24 and the outer hose 25 can be preset according to the wall thickness of the corrugated pipe, so that it remains in close contact with the support ring 24 and the outer hose 25 before the hose clamp 26 is locked. This avoids the interlayer being too small, making it difficult to fit the corrugated pipe, while also avoiding the interlayer space being too large, which would cause local folding of the corrugated pipe after locking, affecting the sealing performance.

[0028] As a preferred implementation, the rotating ring 22 facilitates the rotation of the support ring 24 and the outer hose 25 to the corrugated pipe, preventing direct insertion that would make connection difficult. Furthermore, after the connection end 2 at one end is connected, the other end can remain freely rotatable and connected to the corrugated pipe, thus improving the ease of connection.

[0029] In a preferred embodiment, the connection between the fixing ring 223 and the ring groove 226 is sealed by setting the first sealing ring 222 and the second sealing ring 225.

[0030] During use, when connecting, rotating the rotating ring allows one end of the bellows to be inserted into the space between the outer hose and the support ring, with the end of the outer hose limited by the limiting ring. Then, the outer hose is locked by the hose clamp, which, together with the support ring, clamps the end of the bellows, thus preventing deformation of the bellows caused by excessive clamping force. The first and second sealing rings achieve a rotational seal between the connecting pipe and the rotating ring. At the same time, the outer and inner sealing rings achieve a connection seal after the outer hose and the support ring clamp the bellows. Thus, through dual-point sealing, the airtightness of the connection between the connecting body and the bellows is guaranteed. Meanwhile, the use of the intermediate hose allows the bellows to maintain structural flexibility after connection, thus achieving a flexible connection.

[0031] The flexible sealing connector for multi-layer bellows in vacuum machines of this invention can effectively solve the problems mentioned in the background technology. It achieves internal support for the connection with the bellows based on the existing flexible sealing connector technology for multi-layer bellows in vacuum machines, avoiding deformation of the bellows and increasing the sealing effect of the overall connection.

Claims

1. A flexible sealing connector for a multi-layer bellows in a vacuum machine, comprising: The connector body (1) is characterized in that: the connector body (1) includes a connecting end (2) provided at both ends, and an intermediate hose (3) connected between the connecting ends (2). The connecting end (2) includes a connecting pipe (21) connected to both ends of the intermediate hose (3), and a rotating ring (22) is rotatably connected to the outer end of the connecting pipe (21). A limiting ring (23) is connected to the outer end of the rotating ring (22). A support ring (24) is connected to the inner wall of the limiting ring (23). An outer hose (25) is connected to the outer wall of the limiting ring (23). A hose clamp (26) is provided on the outer side of the outer hose (25). An outer sealing ring (241) is provided on the outer wall of the support ring (24), and an inner sealing ring (251) is provided on the inner wall of the outer hose (25).

2. The flexible sealing connector for a multi-layer bellows in a vacuum machine according to claim 1, characterized in that, Both the outer hose (25) and the middle hose (3) are equipped with rubber hoses, and the outer end of the outer hose (25) extends outward beyond the outer edge of the limiting ring (23).

3. The flexible sealing connector for a multi-layer bellows in a vacuum machine according to claim 1, characterized in that, The outer end of the support ring (24) extends beyond the limiting ring (23), and there is an interlayer space between the support ring (24) and the outer hose (25).

4. The flexible sealing connector for a multi-layer bellows in a vacuum machine according to claim 1, characterized in that, The outer sealing ring (241) and the inner sealing ring (251) are each provided in four sets, and the outer sealing ring (241) and the inner sealing ring (251) are respectively clamped on the outer wall and the inner wall of the bellows.

5. A flexible sealing connector for a multi-layer bellows in a vacuum machine according to claim 1, characterized in that, The inner wall of the inner port of the rotating ring (22) is provided with a first slot (221) and a second slot (224), and an annular groove (226) is provided between the first slot (221) and the second slot (224).

6. A flexible sealing connector for a multi-layer bellows in a vacuum machine according to claim 5, characterized in that, The first slot (221) is fitted with a first sealing ring (222), the second slot (224) is fitted with a second sealing ring (225), and a fixed ring (223) is rotatably connected in the annular groove (226).

7. A flexible sealing connector for a multi-layer bellows in a vacuum machine according to claim 6, characterized in that, The fixing ring (223) is fixed to the outer wall of the connecting pipe (21), and the first sealing ring (222) and the second sealing ring (225) are located on both sides of the fixing ring (223).

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