One-way valve
By introducing a spiral guide groove and a sealing ball structure into the one-way valve, a self-cleaning vortex is formed, which solves the problem of particle or dirt deposition in the transportation of paste-like or solid-containing fluids, and achieves efficient fluid transportation and sealing effect.
Patent Information
- Application Number
- CN202520557329.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-27
AI Technical Summary
When conveying paste-like or solid-containing fluids, existing one-way valves tend to form fluid stagnation zones within the valve chamber, leading to the deposition of particles or contaminants.
A one-way valve was designed, which adopts a spiral guide groove and a sealing ball structure. When the fluid passes through the spiral guide groove, it forms a self-cleaning vortex, which reduces the deposition of particles or dirt. When it flows in the reverse direction, it disturbs the residue in the opposite direction to prevent adhesion.
It effectively reduces the deposition of particles or dirt in the valve cavity, ensuring smooth fluid delivery and sealing, and preventing fluid backflow or leakage.
Smart Images
Figure CN223854918U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to one -way valve field relates to a one -way valve. BACKGROUND
[0002] One-way valve is also called check valve or non-return valve, it is a kind of valve that prevents fluid flowing in a certain direction, it is usually installed at pump outlet, pipeline or equipment inlet to prevent fluid backflow. The working principle of one-way valve mainly depends on the pressure difference of fluid. When fluid flows from the downstream of one-way valve to upstream, due to the existence of pressure difference, valve core is automatically pushed open, allowing fluid to pass. When fluid flows from upstream to downstream, due to the same pressure difference, valve core is automatically closed, preventing fluid backflow. The automatic switching feature makes one-way valve very practical in various application scenarios, such as preventing gas or liquid backflow, preventing pump reverse rotation, etc.
[0003] But the existing one-way valve, when conveying paste or solid-containing fluid, traditional valve cavity is easy to form fluid stagnation area, causing particle or dirt deposition. CONTENT OF THE UTILITY MODEL
[0004] The utility model aims at overcoming the shortcomings of the prior art, providing a one-way valve, which forms a self-cleaning vortex when fluid passes through the valve body, reducing particle or dirt deposition.
[0005] To achieve the above object, the utility model adopts the following technical scheme:
[0006] A one-way valve, comprising a valve body;
[0007] The valve body is provided with a cavity, and the front and rear ends of the valve body are provided with a fluid inlet and a fluid outlet respectively, the fluid inlet and the fluid outlet are both connected with the cavity and the outside of the valve body, the cavity is provided with a sealing ball, a pre-tightening spring and a guide seat, the front and rear ends of the pre-tightening spring are connected with the rear end of the guide seat and the rear end of the cavity respectively, the front end of the guide seat is fixedly connected with the sealing ball, the sealing ball faces the front end of the cavity, and the diameter of the sealing ball is greater than the diameter of the fluid inlet;
[0008] The inner wall surface of the valve body is provided with a spiral flow guide groove.
[0009] Preferably, the front end of the guide seat is an arc surface, and the sealing ball is attached to the arc surface.
[0010] Preferably, the rear end of the guide seat is provided with a limiting groove, and the front end of the pre-tightening spring is located in the limiting groove.
[0011] Preferably, a filter screen is arranged in the fluid inlet.
[0012] Preferably, a sealing ring is arranged at the end of the fluid inlet connected with the cavity.
[0013] Preferably, the sealing ring is a conical surface, and the large-diameter end faces the sealing ball.
[0014] Preferably, the helical flow guide groove is at an angle of 20° to 90° to the valve body axis.
[0015] Preferably, the front end of the valve body is provided with a detachable end cover.
[0016] Preferably, the end cover and the valve body are connected by quick mounting buckles.
[0017] Preferably, the surface of the sealing ball is covered with a wear-resistant coating.
[0018] Compared with the prior art, the utility model has the following beneficial effects:
[0019] When the utility model is used, when fluid flows through the helical flow guide groove, a controllable rotational flow field is generated, a self-cleaning vortex is formed, particle or dirt deposition is reduced, and when the flow is reversed, the helical flow guide groove reversely disturbs the residual particles or dirt, preventing them from adhering to the sealing area. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is a schematic diagram of the one-way valve structure of the utility model.
[0021] Wherein: 1-valve body;2-fluid inlet;3-fluid outlet;4-sealing ring;5-sealing ball;6-guide seat;7-pre-tightening spring;8-filter screen;9-helical flow guide groove. DETAILED DESCRIPTION
[0022] The embodiments of the utility model are described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.
[0023] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly specified.
[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection or can communicate with each other, it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. The term "and / or" used herein includes any and all combinations of one or more related listed items. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. The terms used in the specification of the utility model are only for the purpose of describing the specific embodiments, not intended to limit the utility model.
[0025] In the utility model, unless otherwise specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0026] The disclosure below provides many different implementations or examples to implement different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.
[0027] As shown in Figure 1 The embodiment of the present application provides a one-way valve, which comprises a valve body 1, a fluid inlet 2, a fluid outlet 3, a sealing ring 4, a sealing ball 5, a guide seat 6, a pre-tightening spring 7 and a filter screen 8.
[0028] The valve body 1 is made of brass or 316L stainless steel, and a cavity is arranged in the valve body 1. The fluid inlet 2 and the fluid outlet 3 are arranged at the front and rear ends of the valve body 1 respectively, and both of them are connected with the cavity and the outside of the valve body 1.
[0029] The sealing ball 5, the pre-tightening spring 7 and the guide seat 6 are arranged in the cavity. The pre-tightening spring 7 is connected with the rear end of the guide seat 6 and the rear end of the cavity respectively. The front end of the guide seat 6 is fixedly connected with the sealing ball 5. The front end of the guide seat 6 is an arc surface, and the sealing ball 5 is attached to the arc surface. The rear end of the guide seat 6 is provided with a limiting groove, and the front end of the pre-tightening spring 7 is located in the limiting groove. The sealing ball 5 faces the front end of the cavity. The sealing ball 5 is made of ceramic or stainless steel, and the surface of the sealing ball 5 is covered with a wear-resistant coating. The diameter of the sealing ball 5 is greater than the diameters of the fluid inlet 2 and the sealing ring 4. The pre-tightening force of the pre-tightening spring 7 makes the sealing ball 5 press the sealing ring 4 in normal state.
[0030] The front end of the valve body 1 is provided with a detachable end cover. The end cover is connected with the valve body 1 by quick mounting buckle. The end cover can be directly taken off after being unlocked by pressing. The filter screen 8 and the sealing ring 4 are arranged in the end cover. The filter screen 8 is located at the front end of the sealing ring 4. The filter screen 8 is made of diamond screen, and the mesh number is determined according to actual working condition. The sealing ring 4 is made of rubber material. The sealing ring 4 is sealingly connected with the end cover. The sealing ring 4 is a conical surface, and the large-diameter end faces the sealing ball 5. The conical surface can increase the attachment area of the sealing ring 4 and the sealing ball 5, and improve the sealing level.
[0031] A spiral flow guide groove 9 is arranged on the inner wall surface of the valve body 1. The included angle between the spiral flow guide groove 9 and the axis of the valve body 1 is 20°-90°. When the fluid flows through the spiral flow guide groove 9, a controllable rotational flow field is generated, which is in a spiral propulsion mode, forms a self-cleaning vortex, reduces the deposition of particles or dirt, and when the flow is reversed, the spiral flow guide groove 9 disturbs the residual particles in the opposite direction, preventing them from adhering to the sealing area.
[0032] The spiral flow guide groove 9 is a square groove or a semicircular groove.
[0033] The working process of the one-way valve of the embodiment is as follows:
[0034] 1. Initial state.
[0035] When there is no pressure, the sealing ball 5 is tightly attached to the sealing ring 4 under the pre-tightening force of the pre-tightening spring 7, completely closing the fluid inlet 2 and preventing backflow or leakage of the fluid.
[0036] 2. Opening process.
[0037] 2.1 When the fluid is injected into the pipe and flows to the one-way valve through the pressurizing device, the pressure of the fluid gradually increases.
[0038] 2.2 When the pressure of the fluid exceeds the pre-tightening force of the pre-tightening spring 7, the sealing ball 5 is pushed away from the sealing ring 4, and the fluid inlet 2 is opened.
[0039] 2.3 The fluid flows into the mold cavity through the fluid inlet 2, completing the one-way conduction function.
[0040] 3. Closing process
[0041] 3.1 When the fluid injection is completed, the pressure in the pipe begins to decrease.
[0042] 3.2 Once the pressure of the fluid is lower than the pre-tightening force of the pre-tightening spring 7, the pre-tightening spring 7 will quickly push the sealing ball 5 back to its original position, making it tightly attached to the sealing ring 4 again.
[0043] 3.3 The fluid inlet 2 is closed, preventing backflow or leakage of the fluid.
[0044] 4. Resetting and sealing
[0045] 4.1 After the sealing ball 5 is reset, the pre-tightening force of the pre-tightening spring 7 ensures that the sealing ball 5 body and the sealing ring 4 are in close contact, forming a reliable seal.
[0046] 4.2 Even under low pressure or no pressure, the pre-tightening force of the pre-tightening spring 7 can effectively prevent backflow or leakage of the fluid.
[0047] 5. Repeated work
[0048] 5.1 The one-way valve automatically opens and closes through the elastic force of the pre-tightening spring 7 and the pressure difference of the fluid, without the need for manual intervention.
[0049] 5.2During the entire working process, the one-way valve can efficiently complete the one-way conduction and sealing task, ensuring the smooth delivery and processing of the fluid. When the fluid flows through the spiral flow guide groove 9, a controllable rotational flow field is generated, forming a self-cleaning vortex, reducing the deposition of particles or dirt, and when the flow is reversed, the spiral flow guide groove 9 disturbs the residual particles or dirt in the reverse direction, preventing them from adhering to the sealing area.
[0050] The above-mentioned sequence numbers of the embodiments of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments.
[0051] In the above-described embodiments of the present application, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.
[0052] In the several embodiments provided by the present application, it should be understood that the disclosed technology can be implemented in other ways. Of course, the device embodiment described above is only schematic. For example, the division of the units can be a logical function division, and there can be another division manner in actual implementation, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection between the units can be indirect coupling or communication connection through some interface, and can be electrical or other forms.
[0053] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on multiple units. According to actual needs, part or all of the units can be selected to achieve the purpose of the embodiment scheme.
[0054] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.
[0055] It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and applications other than the examples provided would be apparent to those of skill in the art upon reading the above description. The scope of the application should be determined, not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are incorporated by reference for the purpose of the present disclosure. Any incorporation by reference of any article or reference which has not been available to the general public through no fault of the applicant or its agents is expressly disclaimed. Any reference to the prior art in this specification is not, and should not be taken as, an acknowledgement or any form of suggestion that such prior art is accepted in any jurisdictions outside of the US.
Claims
1. A one-way valve characterized by, The valve body (1) comprises a cavity, a fluid inlet (2) and a fluid outlet (3) arranged at the front and rear ends of the valve body (1) respectively, the fluid inlet (2) and the fluid outlet (3) being connected with the cavity and the outside of the valve body (1), a sealing ball (5), a pre-tightening spring (7) and a guide seat (6) being arranged in the cavity, the pre-tightening spring (7) being connected with the rear end of the guide seat (6) and the rear end of the cavity respectively, the front end of the guide seat (6) being fixedly connected with the sealing ball (5), the sealing ball (5) facing the front end of the cavity, and the diameter of the sealing ball (5) being greater than the diameter of the fluid inlet (2). A spiral flow guide groove (9) is arranged on the inner wall surface of the valve body (1). The front end of the guide seat (6) is an arc surface, and the sealing ball (5) is attached to the arc surface.
2. The one-way valve of claim 1, wherein The rear end of the guide seat (6) is provided with a limiting groove, and the front end of the pre-tightening spring (7) is located in the limiting groove.
3. The one-way valve of claim 1, wherein, A filter screen (8) is arranged in the fluid inlet (2).
4. The one-way valve of claim 1, wherein, The end of the fluid inlet (2) connected with the cavity is provided with a sealing ring (4).
5. The one-way valve of claim 1, wherein, The sealing ring (4) is a conical surface, and the large-diameter end faces the sealing ball (5).
6. The one-way valve of claim 5, wherein, The spiral flow guide groove (9) and the axis of the valve body (1) form an angle of 20°-90°.
7. The one-way valve of claim 1, wherein The front end of the valve body (1) is provided with a detachable end cover.
8. The one-way valve of claim 1, wherein, The end cover and the valve body (1) are connected by a quick-mounting buckle.
9. The one-way valve of claim 8, wherein, The surface of the sealing ball (5) is covered with a wear-resistant coating.
10. The one-way valve of claim 1, wherein,