Pressure-resistant one-way valve

Abstract

The utility model relates to the field of medical instruments, in particular to a pressure-resistant one-way valve which comprises a first connector, a second connector and a valve element, an opening is formed in one side of the valve element, and the opening is communicated with a fluid channel of the first connector. A plurality of through grooves are formed in the other side of the valve element from the center to the circumferential direction, the through grooves are long-strip-shaped, the two sides of the long edge of each long-strip-shaped through groove are inclined faces, and the through grooves are used for being communicated with a fluid channel of a second connector; and the valve core is made of an elastic material. The one-way valve has the advantages that one-way connection and closure functions of the one-way valve are achieved, meanwhile, radial through groove design is carried out on the valve of the one-way valve, a fluid channel of the valve element is enlarged, resistance of the valve element to fluid is reduced when high-pressure fluid passes through the one-way valve in a connection mode, and the pressure and the flow speed of the high-pressure fluid are guaranteed. The influence of the valve element on high-pressure fluid is reduced, and breakage and leakage caused by the fact that the pressure of the high-pressure fluid cannot be released between the connectors on the two sides and the valve element are prevented.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a pressure-resistant one-way valve. Background Art

[0002] Medical one-way valves are key components in modern medical technology and are widely used in various medical devices. At present, the manufacturing technology of medical one-way valves has developed to a certain extent. They are mainly used to control the one-way flow of fluids, prevent backflow and contamination, and ensure the safety and hygiene of medical processes. Existing medical one-way valves have a relatively complex structure, cumbersome assembly and lack of reliability.

[0003] Chinese utility model patent CN 220631359 U discloses a solution bottle, which specifically discloses: a one-way valve capable of conducting from the outside to the inside is arranged on the solution bottle body, the one-way valve is provided with a duckbill valve, the duckbill valve includes two valves arranged in a conical shape and capable of opening or closing, and the medium can only pass through the duckbill valve in one direction. The duckbill valve can realize one-way conduction of the fluid through the valve, but the fluid channel when the one-way valve is conducting is in a narrow gap state, and the gap-shaped fluid channel is limited by the valve structure, and the fluid flow rate is small when the high-pressure fluid is conducting, and the conduction effect for the high-pressure fluid is poor. It is now urgent to design a one-way conduction valve that can meet the high flow rate of the high-pressure fluid. Utility Model Content

[0004] The utility model aims to overcome the shortage of high-pressure fluid flow rate of the one-way valve in the prior art and to provide a pressure-resistant one-way valve for improving the flow rate of high-pressure fluid in the one-way valve conduction state while ensuring the basic functions of the one-way valve such as one-way conduction and one-way interception.

[0005] In order to achieve the above-mentioned purpose, a pressure-resistant one-way valve is designed, including a first joint, a second joint and a valve core, one side of the valve core is provided with an opening, and the opening is connected to the fluid channel of the first joint; the other side of the valve core is provided with a plurality of through grooves from the center to the circumferential direction, the through grooves are long strips, and the two sides of the long side of each long strip through groove are inclined surfaces, and the plurality of through grooves are used to connect to the fluid channel of the second joint; the valve core is made of elastic material.

[0006] Preferably, the valve core of the utility model includes a base, and the base is used to seal the connection between the first joint and the second joint.

[0007] Preferably, at least three through grooves are provided on the other side of the valve core of the utility model, and the three through grooves are radially arranged from the center to the surroundings, and the two sides of each through groove are spliced ​​by inclined surfaces.

[0008] Preferably, the inclined surface of the utility model is used to allow the liquid pressure in the valve core to open the through groove, and the liquid pressure outside the valve core to press the through groove.

[0009] Preferably, a cavity is provided in the second joint of the utility model for accommodating the valve core, and the fluid channel in the second joint is transitioned to the cavity through a conical surface.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] The one-way conduction and one-way interception functions of the one-way valve are realized. At the same time, the valve of the one-way valve is designed with radial grooves, so that the fluid channel of the valve core becomes larger when the one-way valve is in the conduction state, so that when the high-pressure fluid passes through the one-way valve, the resistance of the valve core to the fluid is reduced, thereby ensuring the pressure and flow rate of the high-pressure fluid, reducing the influence of the valve core on the high-pressure fluid, and preventing rupture and leakage between the joints on both sides and the valve core due to the inability to release the pressure of the high-pressure fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 , a cross-sectional view of the utility model;

[0013] Figure 2 , a three-dimensional diagram of the valve core of the utility model;

[0014] Figure 3 , a three-dimensional diagram of the valve core of the utility model from another angle;

[0015] Figure 4 , a three-dimensional diagram of the utility model;

[0016] In the figure: 1 first joint; 2 second joint; 2.1 cavity; 3 valve core; 3.1 base; 4 opening; 5 through groove; 5.1 inclined surface. DETAILED DESCRIPTION

[0017] In order to make the purpose, principle and structure of the utility model clearer, it is further described below in conjunction with the drawings and specific embodiments.

[0018] The utility model provides a pressure-resistant one-way valve, comprising a first joint 1, a second joint 2 and a valve core 3.

[0019] The first joint 1 and the second joint are both provided with fluid channels. The joint between the first joint 1 and the second joint 2 is a step structure, which can be connected by ultrasonic welding. The second joint 2 is provided with a cavity 2.1.

[0020] One end of the valve core 3 is connected to the first joint 1, and the other end is connected to the second joint 2. The valve core 3 is provided with a base 3.1 of a step-like structure, and the two ends of the base are respectively connected to the fluid channel surfaces in the first joint 1 and the second joint, and can be sealed by ultrasonic welding. An opening 4 is provided on the side of the valve core 3 close to the first joint 1, and the opening 4 is connected to the fluid channel of the first joint 1. The valve core has an extension section on the side close to the second joint 2, and the extension section has a plurality of through grooves 5 from the center to the circumference. The through grooves are radially arranged from the center to the surroundings, and the through grooves 5 are in the shape of long strips. The two sides of each through groove 5 are spliced ​​by inclined surfaces 5.1, and the plurality of through grooves 5 are used to connect the fluid channel of the second joint 2. The valve core 3 is made of elastic material.

[0021] When the fluid flows into the second connector 2 and fills the cavity 2.1, under the uniform action of the static pressure of the fluid, the inclined surfaces 5.1 of the plurality of through grooves 5 of the extension section of the valve core 3 are pressed by the fluid, and the through grooves 5 of the valve core 3 are pressed by the inclined surfaces 5.1 of the elastic material, at which time the fluid passage in the valve core 3 is closed, and the fluid cannot enter the fluid passage of the first connector 1 from the second connector 2 through the valve core 3, and at this time the one-way valve forms a one-way interception.

[0022] When the fluid flows into the first joint 1, the fluid enters the opening 4 of the valve core 3 through the fluid channel in the first joint 1, and the fluid pressure expands the inclined surface 5.1 of the through groove 5 to form a fluid channel with a polygonal cross section. At this time, the fluid channel in the valve core 3 is opened, and the fluid can flow from the fluid channel in the first joint 1 through the fluid channel of the valve core 3 into the fluid channel of the second joint 2, forming a one-way conduction of the one-way valve. The cross section of the fluid channel when the valve core 3 is expanded is polygonal, and the cross section of the fluid channel of the duckbill one-way valve core of the prior art is a narrow olive shape when the valve core is expanded. The fluid channel of the present patent is more convenient for the circulation of high-pressure fluid, and has less resistance and interference to the passage of high-pressure fluid. The through groove 5 of the present application is radially designed, and the through grooves can be increased or decreased according to the requirements of fluid pressure to adapt to different fluid working pressures.

[0023] The above is only a specific implementation method of this utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the utility model, according to the technical solution and new concept of the utility model, shall be covered by the protection scope of the utility model.

Claims

1. A pressure-resistant one-way valve, comprising a first joint, a second joint and a valve core, characterized in that An opening is provided on one side of the valve core, and the opening is communicated with the first joint fluid channel; The other side of the valve core is provided with a plurality of through grooves extending from the center to the circumference, the through grooves are in the shape of long strips, and both sides of the long sides of each long strip through groove are inclined surfaces, and the plurality of through grooves are used to connect the fluid channel of the second joint; The valve core is made of elastic material.

2. A pressure-resistant one-way valve as claimed in claim 1, characterized in that The valve core comprises a base, and the base is used for sealing the connection between the first joint and the second joint.

3. A pressure-resistant one-way valve as claimed in claim 1, characterized in that At least three through grooves are formed on the other side of the valve core. The three through grooves are radially arranged from the center to the surroundings, and the two sides of each through groove are connected by inclined surfaces.

4. A pressure-resistant one-way valve as claimed in claim 3, characterized in that The inclined surface is used to allow the liquid pressure in the valve core to open the through groove, and the liquid pressure outside the valve core to press the through groove.

5. A pressure-resistant one-way valve as claimed in claim 1, characterized in that A cavity is provided in the second joint for accommodating the valve core, and the fluid channel in the second joint is transitioned to the cavity through a conical surface.

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