Vacuum-pumping sealing cover for corrugated pipe

Abstract

The utility model discloses a corrugated pipe vacuumizing sealing cover, belongs to the technical field of pipeline accessory structures, and provides a corrugated pipe vacuumizing sealing cover which is easy to operate and convenient to disassemble and comprises a sealing disc, one end of the sealing disc is provided with a lining cylinder, the end of a corrugated pipe is suitable for being sleeved outside the lining cylinder, and the other end of the sealing disc is provided with a connecting end. The connecting end is communicated with the interior of the lining cylinder, the end portion of the connecting end is fixedly connected with a one-way valve, the end face of the sealing disc is further fixedly connected with a deformable pressing sleeve, and the pressing sleeve is coaxial with the lining cylinder and located outside the lining cylinder. By designing the lining cylinder structure capable of being inserted into the corrugated pipe and cooperating with the vacuum pump connected with the one-way valve, vacuumizing operation can be rapidly completed, and the lining cylinder is convenient to disassemble and can be recycled repeatedly; the sealing ring structure is arranged on the outer side of the neck bush, the pressing sleeve is used for reinforcement, air tightness and connection stability are both considered, and the interior of the corrugated pipe can be kept in a stable vacuum state for a long time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline accessory structure, and particularly relates to a corrugated pipe vacuum sealing cover. BACKGROUND

[0002] The corrugated pipe has good fault tolerance and is applied in many scenes. Sometimes, in order to delay the oxidation of wiring in the pipe, a vacuum is needed to be extracted from the corrugated pipe. However, since the two ends of the corrugated pipe are open, the sealing can only be performed by injecting glue and then extracting the vacuum, which is very troublesome. Moreover, the sealing body formed after the glue injection is integrated with the corrugated pipe and cannot be disassembled, which is inconvenient for subsequent replacement and recycling. SUMMARY

[0003] The present application aims to provide a corrugated pipe vacuum sealing cover which is simple to operate and convenient to disassemble.

[0004] To achieve the above purpose, the present application provides a corrugated pipe vacuum sealing cover, which comprises a sealing disc, one end of the sealing disc is provided with an inner lining cylinder, the end of the corrugated pipe is adapted to be sleeved outside the inner lining cylinder, the other end of the sealing disc is provided with a connecting end, the connecting end is in communication with the inside of the inner lining cylinder, and the end of the connecting end is fixedly connected with a one-way valve for preventing air from flowing back and destroying the vacuum state in the corrugated pipe.

[0005] As a preferred, the end face of the sealing disc is further fixedly connected with a deformable compression sleeve, the compression sleeve is coaxial with the inner lining cylinder and located outside the inner lining cylinder, and is used for being wrapped outside the end of the corrugated pipe.

[0006] As a preferred, the compression sleeve is composed of a plurality of pressure spokes, the pressure spokes are equidistantly arranged around the axis of the inner lining cylinder, there are deformation grooves between the pressure spokes, and all the pressure spokes are adapted to be wrapped with a clamping hoop structure for more stably matching the vacuum sealing cover with the end of the corrugated pipe.

[0007] As a preferred, the end of the pressure spoke away from the sealing disc is connected with a push stop ring through a guide ring, the outer diameter of the push stop ring is greater than the outer diameter of the guide ring, and the push stop ring is easier to be contacted with the hand as a force receiving part.

[0008] As a preferred, the end face of the sealing disc is further provided with a constraint ring, the constraint ring is located between the inner lining cylinder and the compression sleeve and directly contacts with the edge of the end of the corrugated pipe.

[0009] As a preferred, the inner diameter of the constraint ring is greater than the outer diameter of the inner lining cylinder, and the inner diameter of the constraint ring is equal to the maximum outer diameter of the corrugated pipe, so that the edge of the end of the corrugated pipe is conveniently embedded.

[0010] As a preferred, the outer surface of the inner liner tube is provided with a limiting ring groove, which is collinear with the axis of the inner liner tube, and the inner liner tube is provided with a sealing ring in the limiting ring groove, which is adapted to be in close contact with the inner wall of the corrugated pipe end to form a sealing surface, thereby ensuring the air tightness of the cover and the corrugated pipe.

[0011] As a preferred, the limiting ring groove has a plurality of limiting ring grooves, and the combination of the limiting ring grooves and the sealing rings is arranged equidistantly along the axis of the inner liner tube to form a multi-stage sealing surface, thereby further improving the air tightness.

[0012] Compared with the prior art, the application has the following advantages:

[0013] (1) By designing the inner liner tube structure which can be inserted into the corrugated pipe, cooperating with the vacuum pump connected with the one-way valve, the vacuum operation can be quickly completed, and the inner liner tube is convenient to disassemble and can be recycled repeatedly;

[0014] (2) By arranging the sealing ring structure on the outside of the inner liner and using the compression sleeve for reinforcement, the air tightness and connection stability are considered, and the corrugated pipe can maintain a stable vacuum state for a long time. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a first schematic diagram of the three-dimensional structure of the corrugated pipe vacuum sealing cover.

[0016] Figure 2 It is a second schematic diagram of the three-dimensional structure of the corrugated pipe vacuum sealing cover.

[0017] Figure 3 It is a first three-dimensional structure sectional view of the corrugated pipe vacuum sealing cover after removing the one-way valve.

[0018] Figure 4 It is a second three-dimensional structure sectional view of the corrugated pipe vacuum sealing cover after removing the one-way valve.

[0019] Figure 5 It is a three-dimensional structure sectional view of the corrugated pipe vacuum sealing cover after removing the sealing ring.

[0020] In the figure: 1, inner liner tube; 101, limiting ring groove; 2, compression sleeve; 201, pressure application spoke; 202, deformation groove; 203, guide ring; 204, push stop ring; 3, sealing disc; 301, connection end; 302, restraint ring; 4, one-way valve; 5, sealing ring. DETAILED DESCRIPTION

[0021] In the following, the application will be further described in conjunction with specific embodiments, and it should be noted that the embodiments described below or the technical features between the embodiments can be combined to form new embodiments without conflict.

[0022] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. They should not be construed as limiting the specific protection scope of this application.

[0023] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0024] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0025] like Figures 1-5 The bellows vacuum sealing cap shown includes a sealing disc 3 made of plastic. One end of the sealing disc 3 has a coaxial inner liner 1. The inner liner 1 and the sealing disc 3 are integral and also made of plastic. However, the materials of the sealing disc 3 and the inner liner 1 are relatively thick, so they are not easily deformed. Therefore, the end of the bellows can be stably fitted outside the inner liner 1. A limiting annular groove 101 is formed on the outer surface of the inner liner 1. The limiting annular groove 101 is collinear with the axis of the inner liner 1. A sealing ring 5 is provided in the limiting annular groove 101 of the inner liner 1. The sealing ring 5 is usually made of a more flexible rubber material and is used to make tight contact with the inner wall of the bellows end to form a sealing surface that can effectively prevent air leakage. There are several limiting annular grooves 101, so there are also several sealing rings 5 ​​that cooperate with the limiting annular grooves 101. These combinations of limiting annular grooves 101 and sealing rings 5 ​​are arranged equidistantly along the axis of the inner liner 1 to form a multi-level sealing surface, which can provide a better sealing effect for the end of the bellows.

[0026] The end surface of the sealing disc 3 is also fixedly connected with a deformable compression sleeve 2, which is generally made of a metal material with good elasticity, the sealing disc 3 is injection molded at the tail end of the compression sleeve 2, the compression sleeve 2 is coaxial with the inner liner 1 and located outside the inner liner 1, although not in direct contact, but because it is relatively close, it is equivalent to being sleeved outside the inner liner 1, the compression sleeve 2 is composed of a plurality of pressure spokes 201, which are arranged equidistantly around the axis of the inner liner 1, thereby forming a sleeve shape, there are deformation grooves 202 between the pressure spokes 201, which reserve deformation space when the pressure spokes 201 are close to each other, all the pressure spokes 201 need to be wrapped with a clamp structure to press the pressure spokes 201 tightly on the outer side of the corrugated pipe end, the clamp structure can be a common spiral tension clamp, the end of the pressure spokes 201 away from the sealing disc 3 is connected with a push stop ring 204 through a guide ring 203, the sizes of the guide ring 203 and the push stop ring 204 are determined and will not deform, the inner diameters of the guide ring 203 and the push stop ring 204 are larger than the maximum outer diameter of the end of the corrugated pipe to be matched, that is, the compression sleeve 2 will form a funnel shape to facilitate the insertion of the end of the corrugated pipe, and the outer diameter of the push stop ring 204 is larger than the outer diameter of the guide ring 203, when the clamp is loosened, the push stop ring 204 can be manually applied with a force to make the sealing cover insert or separate from the end of the corrugated pipe.

[0027] The end surface of the sealing disc 3 also has a constraint ring 302, which is located between the inner liner 1 and the compression sleeve 2, the inner diameter of the constraint ring 302 is larger than the outer diameter of the inner liner 1, and the inner diameter of the constraint ring 302 is equal to the maximum outer diameter of the corrugated pipe, so the end of the corrugated pipe can be embedded in the annular groove formed between the inner wall of the constraint ring 302 and the outer wall of the inner liner 1, which can effectively prevent the edge of the corrugated pipe end from being raised, further improving the sealing of the corrugated pipe end and the stability of the vacuum in the pipe.

[0028] The other end of the sealing disc 3 also has a connection end 301, which communicates with the inside of the inner liner 1 to allow air flow, the end of the connection end 301 is fixedly connected with a one-way valve 4, air in the inner liner 1 and the corrugated pipe can only be discharged from the one-way valve 4, and air cannot enter the inner liner 1 and the corrugated pipe from the one-way valve 4.

[0029] Working principle: when in use, a small amount of lubricant is applied to the outside of the inner liner 1, then the inner liner 1 is inserted into the end of the corrugated pipe until the end edge of the corrugated pipe is embedded in the restraint ring 302, at this time the compression sleeve 2 is sleeved on the end of the corrugated pipe, the clamp is sleeved in the compression sleeve 2, then it is tightened, forcing the end of the corrugated pipe to tightly embrace the outside of the inner liner 1, generally, both ends of the corrugated pipe need to be equipped with the vacuum cover, so that the end of the corrugated pipe is completely sealed, then the pipeline of the external vacuum pump is connected with the one-way valve 4 of a vacuum cover, the vacuum pump is started, the air in the corrugated pipe will be removed, so that the vacuum environment is formed in the corrugated pipe, finally the pipeline of the vacuum pump is separated from the one-way valve 4, under the obstruction of the one-way valve 4, the corrugated pipe can stably maintain the vacuum state.

[0030] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, the above embodiments and descriptions in the specification are only the principles of the present application, various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A bellows vacuum seal cover characterized by: The sealing disc (3) has an inner liner cylinder (1) at one end, the end of the corrugated pipe is adapted to be sleeved outside the inner liner cylinder (1), the other end of the sealing disc (3) has a connecting end (301) in communication with the inside of the inner liner cylinder (1), and the end of the connecting end (301) is fixedly connected with a one-way valve (4).

2. The bellows vacuum lidding according to claim 1, wherein: The end surface of the sealing disc (3) is also fixedly connected with a deformable compression sleeve (2), the compression sleeve (2) is coaxial with the inner liner cylinder (1) and located outside the inner liner cylinder (1).

3. The bellows vacuum lidding of claim 2, wherein: The compression sleeve (2) is composed of a plurality of pressing spokes (201) which are equidistantly arranged around the axis of the inner liner cylinder (1), and there are deformation grooves (202) between the pressing spokes (201), and all the pressing spokes (201) are adapted to wrap the clamp structure.

4. The bellows vacuum lidding of claim 3, wherein: The end of the pressing spoke (201) away from the sealing disc (3) is connected with a push stop ring (204) through a guide ring (203), and the outer diameter of the push stop ring (204) is greater than that of the guide ring (203).

5. The bellows vacuum lidding of claim 2, wherein: The end surface of the sealing disc (3) also has a constraint ring (302) located between the inner liner cylinder (1) and the compression sleeve (2).

6. The bellows vacuum lidding of claim 5, wherein: The inner diameter of the constraint ring (302) is greater than the outer diameter of the inner liner cylinder (1), and the inner diameter of the constraint ring (302) is equal to the maximum outer diameter of the corrugated pipe.

7. A bellows vacuum seal cover according to any one of claims 1 to 6, characterized in that: The outer surface of the inner liner cylinder (1) is provided with a limiting ring groove (101) which is collinear with the axis of the inner liner cylinder (1), and the inner liner cylinder (1) is provided with a sealing ring (5) in the limiting ring groove (101) and adapted to be in close contact with the inner wall of the end of the corrugated pipe.

8. The bellows vacuum lidding of claim 7, wherein: The limiting ring groove (101) has a plurality of limiting ring grooves (101) which are equidistantly arranged along the axis of the inner liner cylinder (1) in combination with the sealing ring (5).

Images