Quick connecting device for PVC (polyvinyl chloride) pipe fittings self-adaptive to different pipe diameters

Abstract

The utility model provides a PVC pipe fitting quick connecting device self-adaptive to different pipe diameters, and relates to the technical field of pipeline connection. The quick connecting device comprises a fixing sleeve, an air bag is arranged on the inner side of the fixing sleeve, a clamping plate is arranged on the inner side of the air bag, a telescopic rod is arranged between the clamping plate and the fixing sleeve, an air inlet pipe is arranged on the fixing sleeve, and the air inlet pipe is communicated with the air bag; the clamping plate comprises an arc-shaped upper clamping plate body and an arc-shaped lower clamping plate body, an extension plate is fixed to the end, facing the upper clamping plate body, of the lower clamping plate body, the extension plate is connected with the upper clamping plate body in a sliding mode, and the extension plate is a rubber plate or a silica gel plate. The connecting device can be suitable for connecting pipes with different pipe diameters, the installation mode is simple and rapid, the installation time is shortened, and the labor cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of pipe connection technology, and more specifically, to a quick connection device for PVC pipe fittings with different diameters. Background Technology

[0002] PVC's main component is polyvinyl chloride, a material whose heat resistance, toughness, and ductility are enhanced by adding other components. Due to its long service life, thin walls, light weight, and resistance to acids, alkalis, and corrosion, PVC pipes are widely used in the construction and decoration industry. For ease of use and transportation, manufacturers cut the pipes to appropriate lengths during production, requiring connection during actual application.

[0003] Traditional PVC pipe connection methods typically involve the use of adhesives or mechanical fasteners. While effective, these methods suffer from several drawbacks: Variation and compatibility: Construction sites often encounter situations where PVC pipes of different sizes need to be connected. Most existing connectors that adapt to various pipe diameters typically use screws, requiring manual tightening of multiple screws to secure the pipes – a cumbersome and time-consuming process. Mechanical fasteners such as flanges or clamps are simple to install, but when connecting pipes of different sizes, frequent replacement of flanges or clamps is necessary, increasing labor costs and extending project timelines. Utility Model Content

[0004] The purpose of this invention is to provide a quick connection device for PVC pipe fittings that adapts to different pipe diameters. It is suitable for connecting pipes of different diameters, and the installation method is simple and quick, shortening the installation time and reducing labor costs.

[0005] This utility model is achieved through the following technical solution:

[0006] A quick-connect device for PVC pipe fittings with different diameters is disclosed, comprising a fixed sleeve, an air bladder inside the fixed sleeve, a clamping plate inside the air bladder, a telescopic rod between the clamping plate and the fixed sleeve, an air inlet pipe on the fixed sleeve, and the air inlet pipe communicating with the air bladder; the clamping plate includes an arc-shaped upper clamping plate and a lower clamping plate, an extension plate is fixed to one end of the lower clamping plate facing the upper clamping plate, and the extension plate is slidably connected to the upper clamping plate, the extension plate being a rubber plate or a silicone plate.

[0007] Furthermore, the upper plate has an arc-shaped groove on its inner side, and the extension plate is slidably installed in the arc-shaped groove. The inner diameters of the upper plate, the lower plate, and the extension plate are the same.

[0008] Furthermore, the upper plate, the lower plate, and the extension plate are all provided with several anti-slip strips on their inner sides.

[0009] Furthermore, the anti-slip strip is parallel to the central axis of the fixing sleeve.

[0010] Furthermore, the cross-section of the anti-slip strip is circular or semi-circular.

[0011] Furthermore, an annular groove is provided on the inner side of the fixing sleeve, and the airbag is installed in the annular groove.

[0012] Furthermore, a flexible cover is provided inside the annular groove, and the airbag is disposed inside the flexible cover.

[0013] Furthermore, flexible sleeves are provided on both sides of the fixed sleeve, and moisture-absorbing elements are provided on the inner side of the flexible sleeves.

[0014] The technical solution of this utility model has at least the following advantages and beneficial effects:

[0015] This invention uses an external inflation device to inflate an airbag, causing the airbag to expand and thus adjusting the distance between the upper and lower clamping plates. This allows the upper and lower clamping plates to fix pipes of different diameters without frequent tightening of screws, simplifying operation and enabling rapid fixing and connection of pipes of different diameters. The telescopic rod improves the stability of the upper and lower clamping plates during movement. The extension plate increases the degree of wrapping around the pipe, enhancing the firmness and stability of the pipe connection. The rubber or silicone plate provides the extension plate with a certain degree of elasticity and flexibility, facilitating its fit to pipes of different diameters and improving the connection strength. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of the quick connection device for PVC pipe fittings with different diameters provided in Embodiment 1 of this utility model;

[0018] Figure 2 This is a cross-sectional view of the quick connection device for PVC pipe fittings with different diameters provided in Embodiment 1 of this utility model;

[0019] Figure 3 This is a schematic diagram of the card plate provided in Embodiment 1 of this utility model;

[0020] Figure 4This is a cross-sectional view of another structure of the quick connection device for PVC pipe fittings with different diameters provided in Embodiment 1 of this utility model.

[0021] Icons: 1-Fixed sleeve, 2-Flexible sleeve, 3-Inlet pipe, 4-Upper clamping plate, 5-Lower clamping plate, 6-Extension plate, 7-Anti-slip strip, 8-Annular groove, 9-Airbag, 10-Telescopic rod, 11-Arc-shaped groove, 12-Flexible sleeve, 13-Moisture-absorbing component. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, 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, and therefore should not be construed as a limitation of this utility model.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example 1

[0028] like Figures 1-3 As shown, this embodiment provides a quick connection device for PVC pipe fittings with different diameters, including a fixing sleeve 1. An air bladder 9 is provided inside the fixing sleeve 1, and a clamping plate is provided inside the air bladder 9. A telescopic rod 10 is provided between the clamping plate and the fixing sleeve 1. An air inlet pipe 3 is provided on the fixing sleeve 1, and the air inlet pipe 3 communicates with the air bladder 9. The clamping plate includes an arc-shaped upper clamping plate 4 and a lower clamping plate 5. An extension plate 6 is fixed to one end of the lower clamping plate 5 facing the upper clamping plate 4, and the extension plate 6 is slidably connected to the upper clamping plate 4. The extension plate 6 is a rubber plate or a silicone plate.

[0029] Inflating the airbag 9 using an external inflation device allows for adjustment of the distance between the upper clamping plate 4 and the lower clamping plate 5. This enables the upper clamping plate 4 and the lower clamping plate 5 to secure pipes of different diameters without frequent screw tightening, simplifying operation and achieving rapid connection of pipes with varying diameters. The telescopic rod 10 enhances the stability of the upper clamping plate 4 and the lower clamping plate 5 during movement. The extension plate 6 improves the coverage of the pipe, strengthening the connection and enhancing its stability. The rubber or silicone plate provides the extension plate 6 with elasticity and flexibility, facilitating its fit to pipes of different diameters and improving the connection strength.

[0030] In this embodiment, an arc-shaped groove 11 is provided on the inner side of the upper clamping plate 4, and the extension plate 6 is slidably installed in the arc-shaped groove 11. The inner diameters of the upper clamping plate 4, the lower clamping plate 5, and the extension plate 6 are the same. This can improve the fit between the extension plate 6 and the outer surface of the pipe, enhance the stability of the pipe connection, and also protect the pipe.

[0031] In this embodiment, the inner sides of the upper clamping plate 4, the lower clamping plate 5, and the extension plate 6 are all provided with a plurality of anti-slip strips 7. The anti-slip strips 7 can prevent the upper clamping plate 4 and the lower clamping plate 5 from slipping, thereby improving the connection effect of the pipe.

[0032] In this embodiment, the anti-slip strip 7 is parallel to the central axis of the fixing sleeve 1, which further enhances the anti-slip effect of the anti-slip strip 7.

[0033] In this embodiment, the anti-slip strip 7 has a circular or semi-circular cross-section. This shape of the anti-slip strip 7 can prevent wear on the surface of the pipe.

[0034] In this embodiment, an annular groove 8 is provided on the inner side of the fixing sleeve 1, and the airbag 9 is installed in the annular groove 8. The annular groove 8 can protect the airbag 9 and reduce external damage to the airbag 9.

[0035] In this embodiment, a flexible cover 2 is provided inside the annular groove 8, and the airbag 9 is disposed inside the flexible cover 2. By enclosing the airbag 9 with the flexible cover 2, damage to the airbag 9 from the external environment can be reduced, ensuring the safety of the airbag 9 during use.

[0036] like Figure 4 As shown in other embodiments of this example, flexible sleeves 12 are provided on both sides of the fixed sleeve 1, and a moisture-absorbing element 13 is provided on the inner side of the flexible sleeve 12. The flexible sleeve 12 and the moisture-absorbing element 13 work together to protect the pipe connection position and reduce the impact of moisture on the connection device.

[0037] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A quick-connect device for PVC pipe fittings with different diameters, characterized in that: The device includes a fixed sleeve, an airbag disposed inside the fixed sleeve, a retaining plate disposed inside the airbag, a telescopic rod disposed between the retaining plate and the fixed sleeve, an air inlet pipe disposed on the fixed sleeve, and the air inlet pipe communicating with the airbag; the retaining plate includes an arc-shaped upper retaining plate and a lower retaining plate, an extension plate is fixed to one end of the lower retaining plate facing the upper retaining plate, and the extension plate is slidably connected to the upper retaining plate, the extension plate being a rubber plate or a silicone plate.

2. The quick-connect device for PVC pipe fittings with different diameters according to claim 1, characterized in that, The upper plate has an arc-shaped groove on its inner side, and the extension plate is slidably installed in the arc-shaped groove. The inner diameters of the upper plate, the lower plate, and the extension plate are the same.

3. The quick-connect device for PVC pipe fittings with different diameters according to claim 2, characterized in that, The upper plate, the lower plate, and the extension plate are all provided with several anti-slip strips on their inner sides.

4. The quick-connect device for PVC pipe fittings with different diameters according to claim 3, characterized in that, The anti-slip strip is parallel to the central axis of the fixing sleeve.

5. The quick-connect device for PVC pipe fittings with different diameters according to claim 4, characterized in that, The anti-slip strip has a circular or semi-circular cross-section.

6. The quick-connect device for PVC pipe fittings with different diameters according to claim 1, characterized in that, The inner side of the fixing sleeve is provided with an annular groove, and the airbag is installed in the annular groove.

7. The quick-connect device for PVC pipe fittings with different diameters according to claim 6, characterized in that, A flexible cover is provided inside the annular groove, and the airbag is disposed inside the flexible cover.

8. The quick-connect device for PVC pipe fittings with different diameters according to claim 1, characterized in that, Flexible sleeves are provided on both sides of the fixed sleeve, and moisture-absorbing elements are provided on the inner side of the flexible sleeves.

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