Non-return corrugated pipe
By installing sliding devices and spring structures at both ends of the bellows, unidirectional fluid flow is achieved, solving the problem of fluid backflow, simplifying installation, and reducing costs.
Patent Information
- Application Number
- CN202520111572.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-01-16
AI Technical Summary
During use, existing bellows are prone to fluid backflow, leading to stains and blockages, requiring the installation of additional check valves, which increases costs.
A check valve bellows is designed. By setting sliding devices at both ends of the pipe body, including sliding parts, limiting plates and sealing rings, the stiffness of the spring is used to achieve unidirectional flow of fluid under different pressures, thus preventing fluid backflow.
It enables unidirectional fluid flow, eliminating the need for additional check valves, simplifying the installation process, reducing costs, and extending service life.
Smart Images
Figure CN223579248U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a check type bellows more specifically, it relates to a check type bellows which does not need external valve and lets fluid only unidirectionally flow. BACKGROUND
[0002] Bellows is a common pipeline type, it is widely used in water conservancy, electric power, construction, aerospace and other industries, in the construction industry, bellows is mainly used to transport liquid and gas, for example, when as a toilet pipeline, bellows is often used as a water inlet pipeline.
[0003] At present, the bellows on the market in the use process, the gas or liquid in the pipe will not only move in one direction, fluid is easy to backflow when using, bellows is easy to get dirty or scale inside, and it is easy to cause blockage of bellows for a long time, usually need to additionally set up check valve to control the flow direction of fluid, but additionally installing check valve needs to spend additional time and money, which is very unprofitable. UTILITY MODEL CONTENTS
[0004] In view of the deficiencies in the prior art, the utility model aims at providing a check type bellows which does not need external valve and lets fluid only unidirectionally flow.
[0005] In order to achieve the above object, the utility model provides the following technical scheme: a check type bellows, including pipe body and first interface and second interface arranged at both ends of the pipe body, the first interface is used as the outlet of the material flow in the pipe body, the second interface is used as the inlet of the material flow in the pipe body, the sliding device is arranged in the first interface, the sliding device includes sliding piece, limiting plate away from the end of bellows and sealing ring at the other end, the sliding piece is arranged between the limiting plate and the sealing ring and axially slides between the limiting plate and the sealing ring, the sliding block is provided with spring, one end of the spring is fixed on the sliding block, the other end of the spring is fixed on the limiting plate, the spring is configured to: when the water pressure in the pipe body is insufficient, the spring abuts the sliding piece on the sealing ring to form a seal; when the water pressure in the pipe body is sufficient, the spring is compressed so that the water can flow normally.
[0006] By adopting the above technical scheme, the first interface and the second interface are arranged at both ends of the pipe body, the sliding piece, the limiting plate and the sealing ring are arranged in the first interface, the spring is arranged between the sliding piece and the limiting plate and fixed on the sliding piece and the limiting plate at both ends, when no fluid passes through the pipe body or a certain amount of fluid passes through, the sliding piece is abutted on the sealing ring to form a seal due to the certain rigidity of the spring, when sufficient fluid enters the inlet, pressure is generated on the sliding block and the spring is compressed, so that the fluid can normally enter and flow out, and the bellows itself has the function of controlling the backflow of fluid, and no additional check valve is needed.
[0007] The utility model further sets up: first interface is equipped with outer thread, second interface is equipped with inner thread.
[0008] Through adopting above technical scheme, first interface is equipped with thread on the outside, thread is equipped with outside indirectly promotes the flow of fluid at first interface, and first interface and second interface are as the outlet and the entrance of fluid, can distinguish better through outer thread and inner thread when installing.
[0009] The utility model further sets up: the inner diameter ratio of pipe body and first interface is between 5 / 8 to 3 / 4.
[0010] Through adopting above technical scheme, the inner diameter ratio of pipe body and first interface is between a certain range, and the inner diameter of pipe body is less than the inner diameter of first interface, because the outer diameter of sliding block is at least greater than the outer diameter of pipe body, when sliding block in first interface is pressed to limit board one end by fluid, the smaller the ratio, the larger the gap that fluid can pass, but when the ratio is less than 5 / 8, it will lead to the overall flow of pipe body is small.
[0011] The utility model further sets up: pipe body and first interface fixed connection, pipe body and second interface detachable connection.
[0012] Through adopting above technical scheme, pipe body and first interface adopt integrated design, pipe body and second interface are detachably connected, can prevent the loosening of first interface and pipe body from leading to the failure of check function, and second interface can be replaced with different specifications according to actual needs.
[0013] The utility model further sets up: first interface and second interface outside are all fixed with screw cap.
[0014] Through adopting above technical scheme, the screw cap outside first interface and second interface can facilitate the disassembly between the two interfaces and external equipment, the screw cap adopts conventional hexagonal nut, can also adopt screw cap of different angle number or size according to actual needs.
[0015] The utility model further sets up: the manufacturing material of pipe body is stainless steel.
[0016] Through adopting above technical scheme, stainless steel material has corrosion resistance, high strength, long service life and other characteristics, as a relatively common material, the processing difficulty is not high in batch production, and it can adapt to various use scenarios. BRIEF DESCRIPTION OF DRAWINGS
[0017] Fig. 1 It is the sectional view of the utility model check valve corrugated pipe;
[0018] Fig. 2A perspective view of the non-return corrugated pipe according to the present application is shown in the drawings.
[0019] Wherein the reference signs are: 1, pipe body; 2, first interface; 3, second interface; 4, sliding piece; 5, limiting plate; 6, sealing ring; 7, spring; 8, external thread; 9, internal thread; 10, nut; DETAILED DESCRIPTION
[0020] Reference Figs. 1-2 The non-return corrugated pipe embodiment according to the present application is further described.
[0021] For ease of description, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to describe the relationship of one element or feature to another element or feature shown in the drawings. It should be understood that, in addition to the orientation shown in the drawings, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the drawings is inverted, the element described as being "below" other elements or features will be positioned "above" the other elements or features. Therefore, the exemplary term "below" can include both upward and downward orientations. The spatial relative description used herein can be interpreted accordingly if the device is positioned in other ways (rotated 90 degrees or positioned in other orientations).
[0022] Moreover, relational terms such as "first" and "second" and the like are used only to distinguish one from another of a same name, and do not necessarily require or imply there is any such actual relationship or order between the parts.
[0023] The application discloses a check type corrugated pipe, which comprises a pipe body 1, a first interface 2 and a second interface 3 arranged at two ends of the pipe body 1, the first interface 2 serving as an outlet for the flow of a substance in the pipe body 1, and the second interface 3 serving as an inlet for the flow of the substance in the pipe body 1, a sliding device is arranged in the first interface 2, the sliding device comprises a sliding block 4, a limiting plate 5 away from the end of the corrugated pipe and a sealing ring 6 at the other end, the sliding block 4 is arranged between the limiting plate 5 and the sealing ring 6 and axially slides between the limiting plate 5 and the sealing ring 6, a spring 7 is arranged on the sliding block 4, one end of the spring 7 is fixed on the sliding block 4, the other end of the spring 7 is fixed on the limiting plate 5, and the spring 7 is configured to abut the sliding block 4 on the sealing ring 6 to form a seal when the water pressure in the pipe body 1 is insufficient, and the spring 7 is compressed when the water pressure in the pipe body 1 is sufficient, so that the water can normally flow. By adopting the above technical scheme, the first interface 2 and the second interface 3 are arranged at two ends of the pipe body 1, the sliding block 4, the limiting plate 5 and the sealing ring 6 are arranged in the first interface 2, the spring 7 is arranged between the sliding block 4 and the limiting plate 5 and fixed on the sliding block 4 and the limiting plate 5 at two ends, when no fluid passes through the pipe body 1 or a certain amount of fluid passes through, the sliding block 4 can be abutted on the sealing ring 6 to form a seal due to the certain rigidity of the spring 7, when sufficient fluid enters the inlet, pressure is generated on the sliding block and the spring 7 is compressed, so that the fluid can normally enter and flow out, and the corrugated pipe itself has the function of controlling the backflow of the fluid, and a one-way valve does not need to be additionally arranged.
[0024] Further, the first interface 2 is provided with external threads 8, and the second interface 3 is provided with internal threads 9. By adopting the above technical scheme, the first interface 2 is provided with external threads, the external threads indirectly increase the flow of fluid at the first interface 2, and the first interface 2 and the second interface 3 serve as the outlet and the inlet of the fluid, so that the external threads 8 and the internal threads 9 can be better distinguished during installation.
[0025] Further, the ratio of the inner diameter of the pipe body 1 to the inner diameter of the first interface 2 is between 5 / 8 and 3 / 4. By adopting the above technical scheme, the ratio of the inner diameter of the pipe body 1 to the inner diameter of the first interface 2 is within a certain range, and the inner diameter of the pipe body 1 is smaller than the inner diameter of the first interface 2, the outer diameter of the sliding block is at least greater than the outer diameter of the pipe body 1, so that when the sliding block is pressed to one end of the limiting plate 5 by the fluid, the smaller the ratio, the larger the gap through which the fluid can pass, but when the ratio is less than 5 / 8, the overall flow of the pipe body 1 becomes small.
[0026] Further, the pipe body 1 is fixedly connected with the first interface 2, and the pipe body 1 is detachably connected with the second interface 3. By adopting the above technical scheme, the pipe body 1 and the first interface 2 are designed in an integrated manner, and the pipe body 1 and the second interface 3 are detachably connected, so that loosening of the first interface 2 and the pipe body 1 can be prevented to cause failure of the check function, and the second interface 3 can be replaced according to actual needs.
[0027] Further, the first interface 2 and the second interface 3 are each fixedly provided with a nut 10. By adopting the above technical scheme, the nut 10 provided on the first interface 2 and the second interface 3 can facilitate disassembly between the two interfaces and external equipment, and the nut 10 can be a conventional hexagonal nut 10, or a nut 10 with different angles or sizes can be used according to actual needs.
[0028] Further, the pipe body 1 is made of stainless steel. By adopting the above technical scheme, the stainless steel material has the characteristics of corrosion resistance, high strength, long service life and the like, and is a relatively common material in batch production, which has low processing difficulty and can be adapted to various use scenarios. The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any usual change and replacement within the technical scheme of the present application should be included in the protection scope of the present application.
Claims
1. A check valve bellows, comprising a pipe body (1) and a first interface (2) and a second interface (3) disposed at both ends of the pipe body (1), characterized in that, The first interface (2) serves as the outlet for material flow within the pipe body (1), and the second interface (3) serves as the inlet for material flow within the pipe body (1). A sliding device is provided in the first interface (2). The sliding device includes a sliding element (4), a limiting plate (5) facing away from the corrugated pipe end, and a sealing ring (6) at the other end. The sliding element (4) is positioned between the limiting plate (5) and the sealing ring (6) and slides axially between the limiting plate (5) and the sealing ring (6). The sliding block is provided with a spring (7). One end of the spring (7) is fixed to the sliding block, and the other end of the spring (7) is fixed to the limiting plate (5). The spring (7) is configured such that when the water pressure inside the pipe body (1) is insufficient, the spring (7) presses the sliding element (4) against the sealing ring (6) to form a seal; when the water pressure inside the pipe body (1) is sufficient, the spring (7) is compressed so that water can flow normally.
2. The check-back bellows according to claim 1, characterized in that, The first interface (2) is provided with an external thread (8), and the second interface (3) is provided with an internal thread (9).
3. A check-loop bellows according to claim 1, characterized in that, The ratio of the inner diameter of the tube body (1) to the inner diameter of the first interface (2) is between 5 / 8 and 3 / 4.
4. A check-loop bellows according to claim 1, characterized in that, The tube body (1) is fixedly connected to the first interface (2), and the tube body (1) is detachably connected to the second interface (3).
5. A check-loop bellows according to claim 1, characterized in that, Nuts (10) are fixed to the outside of both the first interface (2) and the second interface (3).
6. A check-loop bellows according to claim 1, characterized in that, The tube body (1) is made of stainless steel.