Venous valve type one-way valve
By adopting the intravenous valve type check valve design and polytetrafluoroethylene material, the leakage, inflexible opening and closing, noise and vibration, as well as installation and maintenance problems of check valves in actual applications are solved, and a higher sealing effect and equipment stability are achieved.
Patent Information
- Application Number
- CN202421824533.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-07-30
AI Technical Summary
Existing check valves have problems in practical applications, including leakage, inflexible opening and closing, noise and vibration, as well as installation and maintenance.
The venous valve type check valve design is adopted, including three venous valve valves, which are connected to the pipe body through valve clamps to achieve wire sealing, reduce dead zone volume, and use polytetrafluoroethylene (PTFE) material to improve corrosion resistance and high temperature resistance.
Improves the sealing effect of the check valve, reduces noise and vibration, enhances the stability and durability of the equipment, while reducing production costs and installation complexity.
Smart Images
Figure CN222950488U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of one-way valves, and in particular relates to a venous valve type one-way valve. Background Art
[0002] As an important fluid control component, the one-way valve is widely used in many fields such as industrial automation, automobile manufacturing, medical equipment, water treatment engineering and household appliances. Its basic principle is based on fluid dynamics and pressure difference. The opening and closing of the valve disc controls the free flow of fluid in one direction, while preventing or restricting the flow of fluid in the opposite direction.
[0003] The core design of the existing conventional one-way valve lies in its internal valve disc and spring system. When the fluid flows in the predetermined direction, the pressure of the fluid pushes the valve disc to open, allowing the fluid to pass smoothly. When the fluid tries to flow in the opposite direction, the preload of the spring will prevent the valve disc from opening, thereby effectively preventing the backflow of the fluid. This design not only ensures the normal operation of the fluid system, but also improves the safety and efficiency of the system.
[0004] Although one-way valves play an important role in various fields, there are still some problems in practical application:
[0005] Leakage problem: The sealing between the valve seat and the valve core is one of the key factors affecting the performance of the check valve. If the coaxiality between the valve seat hole and the valve core hole is poor, or the valve seat is skewed or scratched when pressed into the valve body hole, leakage may occur. In addition, valve seat fragmentation or spring weakening may also cause leakage.
[0006] Inflexible opening and closing: In some cases, the valve core of the one-way valve may become stuck, resulting in inflexible opening and closing of the valve. This may be due to poor machining size and shape accuracy of the valve body hole and the valve core, inappropriate clearance, deformation of the valve core or deformation of the valve body hole due to uneven screw tightening during installation, and deformation and twisting of the spring.
[0007] Noise and vibration: When fluid passes through a check valve, noise and vibration may occur. This may be caused by oil flow exceeding the allowable value, resonance with other valves, or insufficient pressure relief devices. Long-term noise and vibration will not only affect the normal operation of the equipment, but may also cause interference to the surrounding environment.
[0008] Installation and maintenance issues: The installation direction of the check valve must be correct, otherwise the medium will not be able to flow through the system, or even damage the system. In addition, the maintenance of the check valve is also an important task, including regular inspection of the seal for wear and cleaning the inside of the valve body. However, in actual applications, due to improper operation or untimely maintenance, the performance of the check valve may deteriorate or fail. Utility Model Content
[0009] In view of the above deficiencies in the prior art, the purpose of the present utility model is to provide a venous valve type one-way valve.
[0010] To achieve the above objectives, the technical solutions adopted are:
[0011] A venous valve type one-way valve includes a valve membrane, which includes three valve flaps. The valve flap is a venous valve-like structure. One end of the valve flap is provided with a tip, and the other end is provided with a mounting portion. The mounting portion is provided with a first protrusion, and a curved portion is connected between the tip and the mounting portion. The three valve flaps are respectively connected to the valve hoop through their respective mounting portions. The valve hoop is an annular structure. The inner side of the valve hoop is provided with a groove adapted to the first protrusion structure. The valve flap is connected to the tube body through the valve hoop.
[0012] The beneficial effects of adopting the above technical solution are: the valve hoop is used to cooperate with the clamp to limit the movement of the valve body on the pipe wall and fix the position of the valve disc; the side of the valve disc is inclined toward the inside of the valve disc, so that when the valve disc is in a closed state, only the outer edges of the side surfaces are connected between adjacent valve discs, which is a line sealing sealing method. Compared with plane sealing, there is a problem of poor sealing effect due to reasons such as difficulty in ensuring flatness. Line sealing can enhance the sealing effect. The three valve discs are interference fit for easy installation. Reducing the thickness of the valve disc can also reduce the dead zone volume.
[0013] On the basis of the above technical solution, the present invention can also make the following improvements:
[0014] Furthermore, the three valve flaps form an angle of 120° with each other.
[0015] The beneficial effect of adopting the above further technical solution is that the three valve flaps are evenly distributed and form an angle of 120° with each other, which can ensure that each valve flap can be evenly stressed when subjected to fluid pressure, thereby improving the stability and durability of the entire one-way valve. At the same time, this layout also helps to reduce the resistance of the fluid when passing through and improve the smoothness of the fluid flow.
[0016] Furthermore, adjacent valve flaps are connected via outer edges of the side surfaces.
[0017] Furthermore, a V-shaped gap is formed between the side surfaces of adjacent valve flaps.
[0018] The beneficial effect of the above two-step technical solution is that a V-shaped gap is formed between the sides of adjacent valve flaps. This design makes it possible for only the outer edges of adjacent valve flaps to contact each other when the valve flaps are closed, thus forming a line seal. Compared with a plane seal, a line seal can more effectively prevent fluid leakage, especially under high pressure or high flow rate conditions, where the sealing effect is more significant.
[0019] Furthermore, the valve flap is made of polytetrafluoroethylene (PTFE) with a Shore hardness of 50-70.
[0020] The beneficial effect of adopting the above further technical solution is that polytetrafluoroethylene (PTFE) is an excellent corrosion-resistant, high-temperature-resistant, low-friction material, and is very suitable for making fluid control components. The PTFE valve disc with a Shore hardness of 50 to 70 has a certain rigidity to ensure the sealing effect, and has good flexibility to adapt to the deformation requirements under different working conditions, completes the interference fit with other valve discs, and can be smoothly engaged with the valve hoop. The valve disc is made of soft elastic material, and its tip has an outward pre-tightening force, which makes the valve disc tightly fixed in the clamping groove of the valve hoop.
[0021] Furthermore, the cross section of the valve hoop is shaped like an "L".
[0022] The beneficial effect of adopting the above further technical solution is that the "L"-shaped valve hoop cross-section design provides a more stable support structure, which helps to enhance the connection strength between the valve disc and the valve hoop. At the same time, this design also helps to reduce the eddy current and turbulence generated when the fluid passes through the valve disc, and improves the stability of the fluid flow.
[0023] Furthermore, a first annular groove is provided on the outer side of the valve hoop, and a second annular protrusion is provided on the inner wall of the tube body. The second protrusion is installed in the first groove to achieve the connection between the valve hoop and the tube body.
[0024] The beneficial effect of adopting the above further technical solution is that the first groove and the second protrusion cooperate to achieve a quick and stable connection between the valve hoop and the pipe body. This connection method does not require additional fasteners, simplifies the installation process, and improves the reliability of the connection.
[0025] Furthermore, the outer wall of the tube body is provided with a second groove, the second groove is correspondingly arranged on the outer side of the second protrusion, and an annular clamp is provided in the second groove.
[0026] The beneficial effect of adopting the above further technical solution is that the second groove and the second protrusion are produced by the elastic deformation of the relatively soft tube body under the action of the clamp, and the clamp is used to fix and clamp the valve membrane and the valve hoop to prevent them from axial movement in the tube body.
[0027] Furthermore, the clamp is a rubber ring or a cross throat clamp.
[0028] The above three-step further technical solution is particularly suitable for a relatively soft tube whose tube body is preferably made of one of silicone, TPU, PP, and PU materials, and the valve clamp is preferably made of polyoxymethylene (POM) or ABS.
[0029] Furthermore, the valve hoop and the tube body are integrally formed, and the tube body is located at both ends of the valve hoop.
[0030] The beneficial effect of adopting the above-mentioned further technical solution is that the installation of the clamp does not need to destroy the original pipe body structure, the installation position of the entire valve body is flexible and changeable, potential problems caused by improper connection between different components are eliminated, and the strength and sealing performance of the entire one-way valve are improved.
[0031] Furthermore, the inner wall of the tube body is provided with an internal thread.
[0032] Furthermore, the outer wall of the tube body is provided with external threads.
[0033] Furthermore, the end face of the tube body is provided with an end face seal.
[0034] The beneficial effects of adopting the above three-step further technical solution are: the design of the internal thread allows the pipe body to be connected to other pipe bodies or devices with external threads. Corresponding to the internal thread, the design of the external thread allows the pipe body to be easily connected to other pipe bodies or devices with internal threads. The end face seal also provides a way to seal by squeezing two smooth end faces against each other.
[0035] The above four-step further technical solution is particularly suitable for relatively hard pipes such as metal or plastic.
[0036] Compared with the prior art, the utility model has the following beneficial effects: a bionic valve disc structure imitating a venous valve is adopted, unidirectional flow is reversely cut off, the structure is compact, and it is widely applicable to various fluids, especially high-viscosity fluids and highly corrosive fluids. Reducing the thickness of the valve disc can reduce the dead zone volume. The small dead zone volume can facilitate later cleaning, and there is no residue after cleaning, which also means that the long-term effectiveness of the seal can be improved, the mute effect is good, and the material has good high-temperature resistance. Parts such as valve discs and valve clamps of hoses can be injection molded for batch production, with low structural cost, high production efficiency, and great upgrading potential. The materials of the valve discs and valve clamps can be replaced according to different fluids to adapt to different corrosive fluids, involving relative hoses and relative hard pipe structures. In the relative hose structure, the threadless connection means lower processing costs, and it can even be directly injection molded without destroying the original pipeline structure, and the sealing is better; the sealing method for hard pipes is threaded sealing or end face sealing, which has various uses, simple and reliable sealing methods, and can flexibly switch sealing methods. There is a rich supporting sealing industry chain, and there is no need to disconnect the pipeline to prevent the sealing risk caused by disconnecting the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS
[0037] Figure 1 This is a schematic diagram of the structure of the valve membrane of the utility model;
[0038] Figure 2 It is a schematic diagram of the structure of two valve discs;
[0039] Figure 3 It is a three-dimensional diagram of the venous valve type one-way valve relative to the hose of the utility model;
[0040] Figure 4 It is a front view of the venous valve type one-way valve relative to the hose of the utility model;
[0041] Figure 5 It is a top view of the venous valve type one-way valve of the utility model relative to the hose;
[0042] Figure 6 It is a bottom view of the venous valve type one-way valve of the utility model relative to the hose;
[0043] Figure 7 for Figure 5 Cross-sectional view along AA direction;
[0044] Figure 8 for Figure 7 The enlarged view of G;
[0045] Fig. 9 It is a front view of the venous valve type one-way valve relative to the hard tube of the utility model;
[0046] Fig.10 for Fig. 9 Cross-sectional view along direction BB;
[0047] Fig.11 It is a sectional view of the cross section of the valve membrane of the utility model.
[0048] The figures are marked as follows: 1. valve flap; 101. tip; 102. mounting portion; 103. curved portion; 104. first protrusion; 105. side; 2. valve hoop; 201. first groove; 202. clamping groove; 3. tube body; 301. second protrusion; 302. second groove; 303. internal thread; 304. external thread; 305. end face; 4. clamping hoop. DETAILED DESCRIPTION
[0049] The present invention is described below in conjunction with examples, which are only used to explain the present invention and are not used to limit the scope of the present invention.
[0050] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0051] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0052] Reference Figures 1 to 11 A venous valve type one-way valve includes a valve membrane, the valve membrane includes three valve flaps 1, the valve flap 1 is a venous valve-like structure, one end of the valve flap 1 is provided with a tip 101, the other end is provided with a mounting portion 102, the mounting portion 102 is provided with a first protrusion 104, a curved portion 103 is connected between the tip 101 and the mounting portion 102, the three valve flaps 1 are respectively connected to the valve hoop 2 through their respective mounting portions 102, the three valve flaps 1 are connected to the valve hoop 2 through the mounting portion 102, the valve hoop 2 is an annular structure, the inner side of the valve hoop 2 is provided with a slot 202 adapted to the first protrusion 104 structure, and the valve flap 1 is connected to the tube body 3 through the valve hoop 2.
[0053] In this embodiment, specifically, the three valve flaps 1 form an angle of 120° with each other.
[0054] As a preferred embodiment, Figure 2 As shown, adjacent valve flaps 1 are connected via the outer edges of the side surfaces 105 .
[0055] In this embodiment, specifically, Fig.11 As shown, a V-shaped gap is formed between the side surfaces 105 of adjacent valve flaps 1 , that is, the side surfaces 105 of the valve flap 1 are inclined from the outside to the inside of the valve flap 1 .
[0056] As a preferred embodiment, the valve flap 1 is made of polytetrafluoroethylene (PTFE) with a Shore hardness of 50-70.
[0057] In an alternative embodiment, reference Figure 7 and Fig.10 The cross section of the valve hoop 2 is shaped like an "L".
[0058] As a preferred embodiment, refer to Figures 3 to 8The tube body 3 is preferably a relatively soft tube made of one of silicone, TPU, PP, and PU materials. At this time, the valve hoop 2 is preferably made of polyoxymethylene (POM) or ABS. The outer side of the valve hoop 2 is provided with an annular first groove 201, and the inner wall of the tube body 3 is provided with an annular second protrusion 301. The second protrusion 301 is installed in the first groove 201 to achieve the connection between the valve hoop 2 and the tube body 3; the outer wall of the tube body 3 is provided with a second groove 302, and the second groove 302 is correspondingly arranged on the outer side of the second protrusion 301. The second groove 302 is provided with an annular clamp 4. The clamp 4 is a rubber ring or a cross throat clamp. The second groove 302 and the second protrusion 301 are produced by the elastic deformation of the relatively soft tube body 3 under the tightening action of the clamp 4.
[0059] As a preferred embodiment, refer to Figures 9-10 When the tube body 3 is a relatively hard tube such as metal or plastic, the valve hoop 2 is integrally formed with the tube body 3, and the tube body 3 is located at both ends of the valve hoop 2. The inner wall of the tube body 3 is provided with an internal thread 303. The outer wall of the tube body 3 is provided with an external thread 304. The end face 305 of the tube body 3 is provided with an end face seal.
[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 venous valve type one-way valve, characterized in that: The invention comprises a valve membrane, wherein the valve membrane comprises three valve flaps (1), wherein the valve flap (1) is a venous valve-like structure, wherein one end of the valve flap (1) is provided with a tip (101), and the other end is provided with a mounting portion (102), wherein a first protrusion (104) is provided on the mounting portion (102), and a curved portion (103) is connected between the tip (101) and the mounting portion (102), wherein the three valve flaps (1) are respectively connected to a valve hoop (2) through their respective mounting portions (102), wherein the valve hoop (2) is an annular structure, wherein the inner side of the valve hoop (2) is provided with a slot (202) adapted to the structure of the first protrusion (104), and wherein the valve flap (1) is connected to a tube body (3) through the valve hoop (2).
2. The venous valve type one-way valve according to claim 1, characterized in that: The three valve flaps (1) form an angle of 120° with each other.
3. The venous valve type one-way valve according to claim 1, characterized in that: Adjacent valve flaps (1) are connected via the outer edges of the side surfaces (105).
4. The venous valve type one-way valve according to claim 1, characterized in that: A V-shaped gap is formed between the side surfaces (105) of adjacent valve flaps (1).
5. The venous valve type one-way valve according to claim 1, characterized in that: The cross section of the valve hoop (2) is quasi-L-shaped.
6. The venous valve type one-way valve according to any one of claims 1 to 5, characterized in that: The outer side of the valve hoop (2) is provided with an annular first groove (201), and the inner wall of the tube body (3) is provided with an annular second protrusion (301), and the second protrusion (301) is installed in the first groove (201) to achieve the connection between the valve hoop (2) and the tube body (3).
7. The venous valve type one-way valve according to claim 6, characterized in that: The outer wall of the tube body (3) is provided with a second groove (302), the second groove (302) is arranged correspondingly on the outside of the second protrusion (301), and an annular clamp (4) is arranged in the second groove (302).
8. The venous valve type one-way valve according to any one of claims 1 to 5, characterized in that: The valve hoop (2) and the tube body (3) are integrally formed, and the tube body (3) is located at both ends of the valve hoop (2).
9. The venous valve type one-way valve according to claim 8, characterized in that: The inner wall of the tube body (3) is provided with an internal thread (303).
10. The venous valve type one-way valve according to claim 9, characterized in that: The outer wall of the tube body (3) is provided with an external thread (304).