One-way valve utilizing fluid pressure

Abstract

The utility model relates to a one-way valve utilizing fluid pressure, which comprises a first connector and a second connector, fluid channels are arranged in the first connector and the second connector, valve cores are arranged in the fluid channels of the first connector and the second connector, the valve cores are made of elastic materials, and each valve core comprises a connecting seat. The connecting base is used for sealing the connecting position of the first connector and the second connector, one side of the connecting base is open and communicated with a fluid channel of the second connector, the valve element on the other side of the connecting base extends to form symmetrical inclined faces facing the direction away from the second connector, and gap structures are arranged at the ends, away from the second connector, of the inclined faces. The gap structure can be communicated with the first connector channel when the valve element deforms. The one-way valve has the advantages that the Pascal principle of fluid mechanics is utilized, and opening and closing of the valve element of the one-way valve are controlled in a one-way mode through the pressure of fluid; the design of the valve core not only plays a role in controlling the one-way valve, but also plays a role in sealing; the structure is simple, and installation and use are easy.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a one-way valve utilizing fluid pressure. 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 invention patent CN202311853631.3 discloses a one-way valve to prevent backflow, including a valve body and a one-way valve core assembly installed in the valve body, a fluid channel is provided inside the valve body, a channel inlet is provided at one end of the fluid channel, a channel outlet is provided at the other end of the fluid channel, and a first step is provided in the fluid channel; the one-way valve core assembly includes a valve core provided on one side of the first step, and the fluid can enter the fluid channel through the channel inlet, and the fluid entering the fluid channel can push the valve core to rotate to open the fluid channel, so that the fluid is discharged through the channel outlet, and when the fluid is stopped from entering the fluid channel, the valve core can be restored to its original state and abut against the first step under the elastic force of the reset spring to close the fluid channel, thereby preventing the fluid from flowing back. In this invention patent, a reset spring needs to be set to realize the reset of the valve core, and the one-way flow of the interception is realized by reset, which has a complex structure and requires external force to realize reset and interception, with high maintenance cost and poor stability. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a one-way valve using fluid pressure, which is used to close and open the valve core only by the pressure of the fluid, thereby controlling the one-way conduction and reverse interception of the fluid channel to prevent backflow and pollution.

[0005] In order to achieve the above-mentioned purpose, a one-way valve utilizing fluid pressure is designed, comprising a first joint and a second joint, wherein a fluid channel is provided in the first joint and the second joint, and a valve core is provided in the fluid channel of the first joint and the second joint, and the valve core is made of an elastic material, and the valve core comprises a connecting seat, and the connecting seat is used to seal the connection between the first joint and the second joint, and one side of the connecting seat is open, connecting to the fluid channel of the second joint, and the valve core on the other side of the connecting seat extends with a symmetrically inclined inclined surface, and faces in a direction away from the second joint, and a gap structure is provided at the end of the inclined surface away from the second joint, and the gap structure can be connected to the first joint channel when the valve core is deformed.

[0006] Preferably, when the liquid in the fluid channel of the second connector of the utility model flows into the valve core, the liquid pressure will be concentrated on the inner side of the inclined surface, and the gap between the inclined surfaces will be pushed open, allowing the liquid to pass through and flow into the fluid channel of the first connector. Conversely, when the liquid in the fluid channel of the first connector flows into the valve core, the pressure generated will act on the outer side of the inclined surface, and this external pressure will close the gap between the inclined surfaces, thereby sealing the structure and preventing the liquid from flowing to the second connector.

[0007] Preferably, the first joint and the second joint of the utility model are welded by ultrasonic welding.

[0008] Preferably, the connecting seat and the outer side of the inclined surface of the utility model are in a step structure.

[0009] Compared with the prior art, the utility model has the following advantages:

[0010] 1. The utility model utilizes the Pascal principle of fluid mechanics to unidirectionally control the opening and closing of the one-way valve core through the pressure of the fluid.

[0011] 2. The valve core design of the utility model not only plays the role of controlling the one-way valve, but also plays the role of sealing.

[0012] 3. The utility model has a simple structure and is easy to install and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 , a three-dimensional diagram of the overall structure of the utility model;

[0014] Figure 2 , a three-dimensional diagram of the valve core and the second joint of the utility model;

[0015] Figure 3 , a three-dimensional diagram of the valve core structure of the utility model;

[0016] Figure 4 , a three-dimensional diagram of the valve core structure of the utility model from another perspective;

[0017] Figure 5 , a sectional view of the overall assembly of the utility model.

[0018] In the figure: 1 first joint; 2 second joint; 3 valve core; 3.1 connecting seat; 3.2 inclined surface; 3.3 gap structure; 3.4 step structure; 4 fluid channel. DETAILED DESCRIPTION

[0019] 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.

[0020] The utility model provides a one-way valve utilizing fluid pressure.

[0021] Specifically, it includes a first joint 1 , a second joint 2 and a valve core 3 .

[0022] See also Figure 1 The first joint 1 and the second joint 2 are connected by threads, and the valve core 3 is arranged between the first joint 1 and the second joint 2 .

[0023] See also Figure 2 , 3 , 4, 5, the valve core 3 comprises a connection seat 3.1, a slope 3.2, a gap structure 3.3 and a step structure 3.4. The connection seat 3.1 of the valve core 3 is arranged in the second joint 2 and connected by ultrasonic welding, the connection seat 3.1 has a step structure 3.4, and two extending slopes 3.2 are arranged on the step structure 3.4 away from the second joint 2, the ends of the slope structures cooperate to form a gap structure 3.3, and the valve core is made of elastic material as a whole.

[0024] When the fluid flows in from the second joint 2, under the action of Pascal's principle, the fluid vertically squeezes the tube wall of the second joint 2 and the inner side surfaces of the inclined surfaces 3.2 on both sides. Under the action of the force on the inner side surfaces of the inclined surfaces 3.2, the valve core is deformed, and the gap structure 3.3 is stretched open to form a fluid channel of the valve core 3. The fluid channels between the first joint 1, the second joint 2 and the valve core 3 are unobstructed and connected, and the fluid can flow freely.

[0025] When the fluid flows in from the first joint 1, under the action of Pascal's principle, the fluid vertically squeezes the tube wall of the first joint 1 and the outer side surfaces of the inclined surfaces 3.2 on both sides. Under the action of the force on the outer side surfaces of the inclined surfaces 3.2, the valve core 3 is deformed, the inclined surfaces 3.2 are slightly recessed toward the second joint 2, and the gap structure 3.3 is also squeezed to be sealed. At this time, the fluid channel in the valve core 3 is cut off and cannot flow. The fluid channel between the first joint 1, the second joint 2 and the valve core 3 is cut off, and the fluid cannot flow freely.

[0026] 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 one-way valve using fluid pressure, comprising a first joint and a second joint, wherein the first joint and the second joint are provided with a fluid channel, characterized in that A valve core is provided in the fluid channel of the first joint and the second joint, and the valve core is made of elastic material. The valve core includes a connecting seat, and the connecting seat is used to seal the connection between the first joint and the second joint. One side of the connecting seat is open and connected to the fluid channel of the second joint. The valve core on the other side of the connecting seat extends with a symmetrically inclined inclined surface and faces away from the second joint. A gap structure is provided at the end of the inclined surface away from the second joint, and the gap structure can be connected to the first joint channel when the valve core is deformed.

2. A one-way valve using fluid pressure as claimed in claim 1, characterized in that When the liquid in the fluid channel of the second connector flows into the valve core, the liquid pressure will be concentrated on the inner side of the inclined surface, and the gap between the inclined surfaces will be pushed open, allowing the liquid to pass through and flow into the fluid channel of the first connector. Conversely, when the liquid in the fluid channel of the first connector flows into the valve core, the pressure generated will act on the outer side of the inclined surface, and this external pressure will close the gap between the inclined surfaces, thereby sealing the structure and preventing the liquid from flowing to the second connector.

3. A one-way valve using fluid pressure as claimed in claim 1, characterized in that The first joint and the second joint are welded by ultrasonic welding.

4. A one-way valve using fluid pressure as claimed in claim 1, characterized in that The connecting seat and the outer side of the inclined surface are in a step structure.

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