A corrugated tube for a wind sock, a wind sock assembly and a wind sock pump

Abstract

The utility model belongs to the technical field of wind bag pump, concretely relates to a corrugated pipe for wind bag, wind bag assembly and wind bag pump, the corrugated pipe for wind bag includes the connecting piece of pipe body and setting at one end of pipe body, the outside of pipe body is equipped with the outer tube, one end of outer tube is connected with connecting piece, the pipe body includes the anti -friction layer of inside to outside, impact layer and anticorrosive base layer, the corrugated pipe for wind bag passes through setting the pipe body and outer tube including the anti -friction layer of impact layer and anticorrosive base layer, prevents internal drive gas impact and accumulation and the corrosion of external delivery liquid, has improved the durability of corrugated pipe for wind bag, and then improves the service life and sealing performance of wind bag, prevents liquid or gas leakage.

Description

Technical Field

[0001] This utility model belongs to the field of airbag pump technology, specifically relating to a corrugated pipe for an airbag, an airbag assembly, and an airbag pump. Background Technology

[0002] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and is not necessarily to be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art.

[0003] A plenum pump is a type of pump that uses compressed air as power, with an internal plenum reciprocating to transport liquid. The pump chamber of the plenum is divided into two working chambers, each consisting of a gas phase working chamber and a liquid phase working chamber. After compressed air enters the gas phase working chamber, the plenum deforms and moves. The compressed air is controlled by a reversing valve to sequentially enter the two gas phase working chambers. The liquid phase chamber is used for alternating suction and discharge to achieve liquid transport.

[0004] The air bladders used in air bladder pumps are mostly U-shaped structures formed by bellows and connecting plates. During operation, the bellows expands and contracts to change the volume of the air bladder. Two air bladders are connected by connecting plates and rods to reciprocate, enabling continuous liquid supply. On the one hand, the air bladder needs to come into contact with the corrosive liquid being transported. If acids, alkalis, or organic solvents react chemically with the bellows during transport, the bellows will be corroded, affecting not only transport safety but also the purity and other properties of the medium. On the other hand, the driving gas needs to enter and exit the air bladder to cause its deformation. The driving gas can easily accumulate at the bends inside the bellows, reducing expansion and contraction efficiency and causing pressure on the bellows, leading to wear. Prolonged wear and corrosion may thin the bellows or even cause perforation, thus affecting the service life and sealing performance of the air bladder, resulting in liquid or gas leakage. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a corrugated pipe for an airbag, an airbag assembly, and an airbag pump. The corrugated pipe for the airbag, by setting a pipe body and an outer pipe including a friction-reducing layer, an impact-resistant layer, and an anti-corrosion base layer, prevents the impact and accumulation of internal driving gas and the corrosion of external transported liquid, thereby improving the durability of the corrugated pipe for the airbag, and thus improving the service life and sealing performance of the airbag, preventing liquid or gas leakage.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0007] In the first aspect, this utility model provides a corrugated pipe for an airbag, including a pipe body and a connector disposed at one end of the pipe body. An outer pipe is sleeved on the outside of the pipe body, and one end of the outer pipe is connected to the connector. The pipe body includes a friction-reducing layer, an impact-resistant layer and an anti-corrosion base layer from the inside to the outside.

[0008] Preferably, the friction-reducing layer comprises a polytetrafluoroethylene layer.

[0009] Preferably, the impact-resistant layer includes a fluororubber layer, a polyurethane rubber layer, a neoprene rubber layer, or a nitrile rubber layer.

[0010] Preferably, the anti-corrosion base layer includes a polytetrafluoroethylene (PTFE) layer or a fluorinated ethylene-tetrafluoroethylene copolymer (PFA) layer.

[0011] Preferably, the outer tube comprises a PTFE tube or a PFA tube.

[0012] Preferably, the connector includes a connecting cylinder and an annular connecting plate, the annular connecting plate being sleeved outside the connecting cylinder, and the pipe body and the outer pipe being connected to the annular connecting plate.

[0013] More preferably, the surface of the annular connecting plate is provided with connecting buckles.

[0014] Preferably, the inner diameter of the outer tube is 1.1 to 1.2 times the outer diameter of the tube body.

[0015] Secondly, this utility model provides an airbag assembly, including a bellows for an airbag and a connecting plate as described in the first aspect, wherein the end of the tube body and the outer tube without a connecting member is connected to the connecting plate.

[0016] Thirdly, this utility model provides a wind bag pump, including a pump body and a partition disposed in the center of the pump body; the pump body is divided into a symmetrical first working chamber and a second working chamber by the partition; the first working chamber and the second working chamber are respectively equipped with the wind bag assembly as described in the second aspect; and gas phase fluid chamber and liquid phase fluid chamber are respectively disposed on both sides of the wind bag assembly.

[0017] The beneficial effects achieved by one or more technical solutions of this utility model are as follows: The corrugated pipe for the airbag of this utility model is constructed by setting a pipe body including a friction-reducing layer, an impact-resistant layer, and an anti-corrosion base layer. The friction-reducing layer reduces the friction between the driving gas and the inner wall of the pipe body, reducing the retention of driving gas at bends. The impact-resistant layer weakens the impact force of the gas on the pipe body. The friction-reducing layer and the impact-resistant layer protect the anti-corrosion base layer from wear by the driving gas, improving the durability of the corrugated pipe and preventing liquid or gas leakage. Through the synergistic anti-corrosion of the anti-corrosion base layer and the outer pipe, the penetration of gas and liquid is effectively prevented. The two layers of protection prevent liquid contamination. The corrugated pipe for the airbag of this utility model has an outer pipe sleeved on the outside of the pipe body, establishing a synergistic anti-corrosion mechanism between the anti-corrosion base layer and the outer pipe. The outer pipe is made of anti-corrosion material and comes into contact with the transported liquid during operation, protecting the pipe body from corrosion. When the pipe body is damaged, the outer pipe can prevent gas and liquid leakage and maintain the function of the airbag. When the outer pipe is damaged, the anti-corrosion base layer can maintain the anti-corrosion capability of the pipe body. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0019] Figure 1 This is a schematic diagram of the corrugated tube used in the stroke bag of this utility model;

[0020] Figure 2 This is a schematic diagram of the tube structure of the corrugated tube for the stroke bag in this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the stroke bag assembly in this utility model;

[0022] In the figure, 1 is the pipe body, 2 is the connector, 3 is the outer pipe, 4 is the connecting plate, 11 is the friction-reducing layer, 12 is the impact-resistant layer, 13 is the anti-corrosion base layer, 21 is the connecting cylinder, 22 is the annular connecting plate, and 23 is the connecting buckle. Detailed Implementation

[0023] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0024] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0026] Furthermore, it should be understood in the description of this utility model that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] As a specific implementation method, such as Figure 1 and 2 As shown, a corrugated pipe for an airbag includes a pipe body 1 and a connector 2 disposed at one end of the pipe body 1. An outer pipe 3 is sleeved on the outside of the pipe body 1, and one end of the outer pipe 3 is connected to the connector 2. The pipe body 1 includes a friction-reducing layer 11, an impact-resistant layer 12 and an anti-corrosion base layer 13 from the inside to the outside.

[0031] During the operation of the airbag pump, the driving gas enters and exits the airbag, causing it to expand and contract. After entering the airbag, the driving gas undergoes irregular movement, impacting the inner wall of the bellows and entering the bends of the bellows. In this embodiment, the pipe body 1 includes a friction-reducing layer 11, an impact-resistant layer 12, and an anti-corrosion base layer 13. The friction-reducing layer 11 reduces the friction between the driving gas and the inner wall of the pipe body 1, guiding the driving gas to move along the inner wall of the pipe body 1, reducing the retention of driving gas at bends and its impact on the inner wall of the pipe body 1. The impact-resistant layer 12 weakens the impact force of the driving gas on the pipe body 1. The friction-reducing layer 11 and the impact-resistant layer 12 protect the anti-corrosion base layer 13 from wear by the driving gas. Even if a small amount of wear occurs, the layered protection allows the airbag to operate normally for a period of time, extending the service life of the pipe body.

[0032] The airbag and pump body enclose a liquid working chamber, and the outer side of the corrugated pipe needs to come into contact with the corrosive liquid being transported. In this embodiment, an outer pipe 3 is fitted over the outer side of the pipe body 1. The outer pipe 3 is made of corrosion-resistant material and comes into contact with the liquid being transported during operation, protecting the pipe body 1 from corrosion. When the pipe body 1 is damaged, the outer pipe 3 can prevent gas and liquid leakage and maintain the function of the airbag; when the outer pipe is damaged, the anti-corrosion base layer can maintain the anti-corrosion capability of the pipe body, avoid liquid contamination, and also maintain the function of the airbag.

[0033] In a preferred embodiment, the friction-reducing layer 11 includes a PTFE layer or other materials with a low coefficient of friction that do not affect the normal expansion and contraction of the tube body. By applying a thin layer of PTFE coating, which has a low coefficient of friction and good flexibility, and the PTFE layer having a smooth surface and a lower coefficient of friction compared to other layers of the tube body, the friction between the driving gas and the tube body 1 is reduced, preventing the retention and eddying of the driving gas at bends.

[0034] In a preferred embodiment, the impact-resistant layer 12 includes a fluororubber layer, a polyurethane rubber layer, a neoprene rubber layer, or a nitrile rubber layer. The impact-resistant layer has higher strength, can better resist the impact of the driving gas, and has a certain degree of corrosion resistance.

[0035] In a preferred embodiment, the anti-corrosion base layer 13 includes a PTFE layer or a PFA layer.

[0036] In a preferred embodiment, the thickness ratio of the friction-reducing layer 11, the impact-resistant layer 12, and the anti-corrosion base layer 13 is (0.01-0.05):(0.1-0.2):1.

[0037] In a preferred embodiment, the outer tube 3 includes a PTFE tube or a PFA tube.

[0038] PTFE and PFA have excellent corrosion resistance and are used as materials for the pipe body 1 and the outer pipe 3 to ensure that they will not be corroded by the transported liquid, while ensuring consistency between the two during expansion and contraction.

[0039] In a preferred embodiment, the connector 2 includes a connecting cylinder 21 and an annular connecting plate 22. The annular connecting plate 22 is sleeved on the outside of the connecting cylinder 21. The tube body 1 and the outer tube 3 are connected to the annular connecting plate 22. The connecting cylinder 21 is used to insert into the pump body of the air bag pump and connect the air bag to the pump body.

[0040] In a preferred embodiment, a connecting clip 23 is provided on the surface of the annular connecting plate 22. The shape and size of the clip 23 are not limited, as long as it meets the requirements for fixing the bellows to the pump body.

[0041] As a preferred embodiment, the inner diameter of the outer tube 3 is 1.1 to 1.2 times the outer diameter of the tube body 1. The ratio of the inner diameter of the outer tube 3 to the outer diameter of the tube body 1 needs to be set within a certain range so as not to affect the joint expansion and contraction of the two, nor to cause volume waste, so as not to affect the conveying efficiency.

[0042] Compared with corrugated pipes without an outer tube and without a friction-reducing layer, an impact-resistant layer, or an anti-corrosion base layer, the service life of the corrugated pipe for the airbag in this embodiment of the utility model can be extended by 5 to 10 times.

[0043] As a specific implementation method, such as Figure 3 As shown, an airbag assembly includes a bellows for the airbag and a connecting plate 4 as described above. The ends of the tube body 1 and the outer tube 3 without connectors are connected to the connecting plate 4.

[0044] As one specific implementation, a wind bag pump includes a pump body and a partition disposed in the center of the pump body; the pump body is divided into a symmetrical first working chamber and a second working chamber by the partition; the first working chamber and the second working chamber are respectively equipped with the wind bag assembly as described above; and a gas phase fluid chamber and a liquid phase fluid chamber are respectively disposed on both sides of the wind bag assembly.

[0045] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A corrugated tube for an airbag, characterized in that, It includes a pipe body (1) and a connector (2) disposed at one end of the pipe body (1). An outer pipe (3) is sleeved on the outside of the pipe body (1). One end of the outer pipe (3) is connected to the connector (2). The pipe body (1) includes a friction-reducing layer (11), an impact-resistant layer (12), and an anti-corrosion base layer (13) from the inside to the outside.

2. The corrugated pipe for an airbag as described in claim 1, characterized in that, The friction-reducing layer (11) includes a polytetrafluoroethylene layer.

3. The corrugated tube for an airbag as described in claim 1, characterized in that, The impact-resistant layer (12) includes a fluororubber layer, a polyurethane rubber layer, a chloroprene rubber layer, or a nitrile rubber layer.

4. The corrugated pipe for an airbag as described in claim 1, characterized in that, The anti-corrosion base layer (13) includes a polytetrafluoroethylene layer or a fluorinated ethylene-tetrafluoroethylene copolymer layer.

5. The corrugated tube for an airbag as described in claim 1, characterized in that, The outer tube (3) includes a polytetrafluoroethylene tube or a fluorinated ethylene-tetrafluoroethylene copolymer tube.

6. The corrugated pipe for an airbag as described in claim 1, characterized in that, The connector (2) includes a connecting cylinder (21) and an annular connecting plate (22). The annular connecting plate (22) is sleeved on the outside of the connecting cylinder (21). The tube body (1) and the outer tube (3) are connected to the annular connecting plate (22).

7. The corrugated tube for an airbag as described in claim 6, characterized in that, The surface of the annular connecting plate (22) is provided with connecting buckles (23).

8. The corrugated pipe for an airbag as described in claim 1, characterized in that, The inner diameter of the outer tube (3) is 1.1 to 1.2 times the outer diameter of the tube body (1).

9. A windbag assembly, characterized in that, Includes a bellows tube and a connecting plate (4) for an airbag as described in any one of claims 1 to 8, wherein the end of the tube body (1) and the outer tube (3) without a connector (2) is connected to the connecting plate (4).

10. A wind-bag pump, characterized in that, The pump body includes a pump body and a partition disposed in the center of the pump body; the pump body is divided into a first working chamber and a second working chamber symmetrically by the partition; the first working chamber and the second working chamber are respectively equipped with the air bag assembly as described in claim 9; and gas phase fluid chamber and liquid phase fluid chamber are respectively disposed on both sides of the air bag assembly.

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