Safe anti-backflow one-way valve
By designing a one-way valve that automatically expands and closes the sector valve using water flow tension, the problem of the existing anti-return check valve complex structure is solved, and the automatic anti-return of the water flow and the cost reduction are achieved.
Patent Information
- Application Number
- CN202421735184.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-22
AI Technical Summary
The internal structure of the existing anti-return check valve is complex, resulting in more complex manufacturing and assembly processes, requiring higher precision control, which increases product production cost and user experience.
A safety anti-return check valve is designed, which uses the tension of the water flow to automatically expand and close the fan valve. Through simple part layout and structural design, the automatic anti-return of the water flow is achieved.
By utilizing the tension of the water flow, the automatic anti-reflow of the water flow is achieved, which reduces the cost of use, simplifies the layout of parts, and improves the service effect and life of the product.
Smart Images
Figure CN222836334U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of one-way valves, in particular to a safety type anti-backflow one-way valve. Background Art
[0002] A one-way valve, also known as a check valve or non-return valve, is a special type of valve that allows fluid (such as gas or liquid) to flow in one direction only while preventing the fluid from flowing in the opposite direction. The design of the one-way valve ensures the one-way flow of fluid in the piping system to prevent backflow, protect pumps and other equipment from damage, and maintain the normal operation of the system.
[0003] The internal structure of existing anti-backflow check valves is mostly relatively complex, such as valve discs, seals, guide devices and adjustment mechanisms. Although this complex internal structure design improves the performance of the valve, its manufacturing and assembly process is more complicated and requires higher precision control, which will increase the production cost of the product and reduce the user experience. Utility Model Content
[0004] The technical problem to be solved by the utility model is that the prior art has the disadvantage of a relatively complex overall structure, for which a safe anti-backflow one-way valve is proposed.
[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solution: a safety anti-backflow one-way valve, comprising a first water pipe, a second water pipe is installed on one side of the first water pipe, a connecting pipe is installed inside the first water pipe, a fixing rod is fixedly connected to the surface of the connecting pipe, the number of the fixing rods is four, a fan-shaped valve is installed on one end of the fixing rod close to the second water pipe, and a limiting plate is installed inside the second water pipe.
[0006] Preferably, an end of the fixing rod close to the first water pipe is fixedly connected to an elastic spring, and an end of the elastic spring close to the first water pipe is fixedly connected to the inside of the first water pipe.
[0007] Preferably, a slide groove is provided at one end of the fan-shaped valve close to the first water pipe, a slider is fixedly connected to one end of the limit plate close to the fan-shaped valve, and the interior of the slide groove is slidably connected to the slider.
[0008] Preferably, a sealing plate is installed at the connection between the first water pipe and the second water pipe.
[0009] Preferably, the size of the fan-shaped valve is smaller than the size inside the first water pipe.
[0010] Preferably, the connecting pipe is a corrugated hose.
[0011] Preferably, the main body material of the fan-shaped valve is rubber.
[0012] Technical effects and advantages of the utility model:
[0013] In the utility model, when water flows through the connecting pipe, because the connecting pipe is designed to be narrow inside and wide outside, when the water flows to the end of the connecting pipe, its tension will increase, and at the same time drive the fixing rod to expand the fan-shaped valve outward. At this time, due to the expansion of the fan-shaped valve, the water flow can pass normally. After the water flow is completed, the tension on the connecting pipe disappears, the outward expansion shape of the connecting pipe is reset, and the fan-shaped valve is closed at the same time, thereby achieving automatic backflow prevention of the water flow, and the overall use of the water flow tension, the parts layout is relatively simple, and the use cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the main structure of the one-way valve of the utility model;
[0015] Figure 2 It is a schematic cross-sectional view of the internal structure of the one-way valve of the utility model;
[0016] Figure 3 It is a cross-sectional schematic diagram of the backflow prevention structure of the utility model;
[0017] Figure 4 For this utility model Figure 3 A partial enlarged view of the middle A;
[0018] Figure 5 For this utility model Figure 1 A partial enlarged view of point B in the middle.
[0019] Legend: 1. First water pipe; 2. Second water pipe; 3. Connecting pipe; 4. Fixing rod; 5. Fan-shaped valve; 6. Limit plate; 7. Elastic spring; 8. Slide groove; 9. Sliding block; 10. Sealing plate. DETAILED DESCRIPTION
[0020] The present invention will now be further described in detail in conjunction with the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.
[0021] Reference Figure 1 - Figure 3As shown, the utility model provides a technical solution: a safety type anti-backflow one-way valve, comprising a first water delivery pipe 1, a second water delivery pipe 2 is installed on one side of the first water delivery pipe 1, a connecting pipe 3 is installed inside the first water delivery pipe 1, a fixing rod 4 is fixedly connected to the surface of the connecting pipe 3, the number of the fixing rods 4 is four, a fan-shaped valve 5 is installed at one end of the fixing rod 4 close to the second water delivery pipe 2, and a limiting plate 6 is installed inside the second water delivery pipe 2. When water flows through the connecting pipe 3, because the connecting pipe 3 is designed to be narrow inside and wide outside, when the water flows to the end of the connecting pipe 3, its tension will increase, and at the same time, the fixing rod 4 will be driven to expand the fan-shaped valve 5 outward. At this time, due to the expansion of the fan-shaped valve 5, the water flow can pass normally. When the water flow is completed, the tension on the connecting pipe 3 disappears, the outward expansion shape of the connecting pipe 3 is reset, and the fan-shaped valve 5 is closed at the same time, thereby achieving automatic anti-backflow of the water flow, and the overall use of the tension of the water flow, the parts layout is relatively simple, and the use cost is reduced.
[0022] Reference Figure 3 As shown, in the present embodiment: one end of the fixing rod 4 close to the first water pipe 1 is fixedly connected with an elastic spring 7, and one end of the elastic spring 7 close to the first water pipe 1 is fixedly connected to the inside of the first water pipe 1. By setting the elastic spring 7, the fan-shaped valve 5 can be closed more quickly, thereby effectively improving the anti-backflow effect when the first water pipe 1 is in use.
[0023] Reference Figure 4 As shown, in the present embodiment: a slide groove 8 is provided at one end of the fan-shaped valve 5 close to the first water pipe 1, a slider 9 is fixedly connected to one end of the limiting plate 6 close to the fan-shaped valve 5, the interior of the slide groove 8 is slidably connected to the slider 9, and through the setting of the slide groove 8 and the slider 9, the fan-shaped valve 5 can form a stable limiting effect during the process of expanding or retracting outward, thereby improving the contraction efficiency of the fan-shaped valve 5.
[0024] Reference Figure 5 As shown, in this embodiment: a sealing plate 10 is installed at the connection between the first water pipe 1 and the second water pipe 2. Through the setting of the sealing plate 10, the water flow from the first water pipe 1 to the second water pipe 2 can have better sealing performance, effectively preventing water leakage.
[0025] Reference Figure 3 As shown, in this embodiment: the size of the fan-shaped valve 5 is smaller than the size inside the first water pipe 1. Through this setting, the fan-shaped valve 5 can move better inside the first water pipe 1, and the fluidity of the water flow can be better when the fan-shaped valve 5 is unfolded, thereby improving the use effect.
[0026] Reference Figure 2 and Figure 3As shown, in this embodiment: the connecting pipe 3 is a corrugated hose. Through the provision of the corrugated hose, the connecting pipe 3 is not easy to crack or be damaged during the process of expanding outwards, thereby improving the service life of the connecting pipe 3.
[0027] Reference Figure 3 As shown, in this embodiment: the main body material of the fan-shaped valve 5 is rubber. Through the setting of rubber, the fan-shaped valve 5 can effectively prevent the erosion of water flow, thereby significantly improving the service life of the fan-shaped valve 5.
[0028] Working principle: when water flows through the connecting pipe 3, because the connecting pipe 3 is designed to be narrow inside and wide outside, when the water flows to the end of the connecting pipe 3, its tension will increase, and at the same time drive the fixing rod 4 to expand the fan-shaped valve 5 outward. At this time, due to the expansion of the fan-shaped valve 5, the water flow can pass normally. When the water flow is completed, the tension on the connecting pipe 3 disappears, the outward expansion shape of the connecting pipe 3 is reset, and the fan-shaped valve 5 is closed at the same time, so as to achieve automatic backflow prevention of water flow, and the overall use of the tension of the water flow, the parts layout is relatively simple, and the use cost is reduced. Through the setting of the elastic spring 7, the fan-shaped valve 5 can be closed more quickly, thereby effectively improving the backflow prevention effect of the first water supply pipe 1 when in use, and through the slide groove 8 and the slide The setting of block 9 can enable the fan-shaped valve 5 to form a stable limiting effect during the process of outward expansion or retraction, thereby improving the contraction efficiency of the fan-shaped valve 5. Through the setting of the sealing plate 10, the water flow from the first water pipe 1 to the second water pipe 2 can have better sealing, effectively preventing water leakage. Through this setting, the fan-shaped valve 5 can be better moved inside the first water pipe 1, and the fluidity of the water flow can be better when the fan-shaped valve 5 is expanded, thereby improving the use effect. Through the setting of the corrugated hose, the connecting pipe 3 is not easy to crack or be damaged during the outward expansion process, thereby improving the service life of the connecting pipe 3. Through the setting of the rubber, the fan-shaped valve 5 can effectively prevent the erosion of the water flow, thereby significantly improving the service life of the fan-shaped valve 5.
[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A safety anti-backflow check valve, comprising a first water delivery pipe (1), characterized in that: A second water pipe (2) is installed on one side of the first water pipe (1), a connecting pipe (3) is installed inside the first water pipe (1), a fixing rod (4) is fixedly connected to the surface of the connecting pipe (3), the number of the fixing rods (4) is four, a fan-shaped valve (5) is installed at one end of the fixing rod (4) close to the second water pipe (2), and a limit plate (6) is installed inside the second water pipe (2).
2. A safety anti-backflow check valve according to claim 1, characterized in that: An end of the fixing rod (4) close to the first water pipe (1) is fixedly connected to an elastic spring (7), and an end of the elastic spring (7) close to the first water pipe (1) is fixedly connected to the inside of the first water pipe (1).
3. A safety anti-backflow check valve according to claim 1, characterized in that: The fan-shaped valve (5) is provided with a slide groove (8) at one end close to the first water delivery pipe (1), and the limit plate (6) is fixedly connected with a slider (9) at one end close to the fan-shaped valve (5), and the interior of the slide groove (8) is slidably connected to the slider (9).
4. A safety anti-backflow check valve according to claim 1, characterized in that: A sealing plate (10) is installed at the connection between the first water pipe (1) and the second water pipe (2).
5. The safety anti-backflow check valve according to claim 1, characterized in that: The size of the fan-shaped valve (5) is smaller than the size inside the first water delivery pipe (1).
6. A safety anti-backflow check valve according to claim 1, characterized in that: The connecting pipe (3) is a corrugated hose.
7. The safety anti-backflow check valve according to claim 1, characterized in that: The main body material of the fan-shaped valve (5) is rubber.