One-way valve
By designing a check valve with elastic material valve core, the existing medical check valve complex structure and cumbersome assembly problems are solved, and the precise one-way conduction and reverse interception of the fluid is achieved, ensuring the stable operation and cost reduction of medical equipment.
Patent Information
- Application Number
- CN202420847421.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-04-23
AI Technical Summary
The existing medical check valves have complex structures, cumbersome assembly, lack reliability, and it is difficult to achieve accurate one-way conduction and reverse flow interception of the fluid.
A check valve is designed including a first joint, a second joint and a valve core made of elastic material. The connecting portion of the valve core cooperates with the bumps in the second joint, and realizes one-way conduction of the fluid through the communication groove and the through hole, and seals through the side walls.
The one-way conduction and reverse interception of fluid in the fluid channel are realized, which prevents countercurrent and contamination, ensures the stable operation of medical equipment, and simplifies structure and maintenance, and reduces medical costs.
Smart Images
Figure CN222950483U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of medical equipment, in particular to a 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. Utility Model Content
[0003] The utility model aims to overcome the deficiencies of the prior art and provide a one-way valve for realizing one-way conduction and reverse interception of fluid in a fluid channel to prevent backflow and pollution.
[0004] In order to achieve the above-mentioned purpose, a one-way valve is designed, including a first joint and a second joint, both of which are equipped with a channel for fluid to pass through, a valve core is provided at the channel connection of the first joint and the second joint, and the valve core is made of elastic material, and the valve core includes: a connecting portion, formed in the middle of the valve core and protruding in the direction of the first joint, so that the connecting portion forms a groove structure toward the direction of the second joint to adapt to and accommodate a corresponding protrusion arranged in the second joint channel, and a through hole is opened in the middle of the connecting portion; a connecting groove, arranged on the peripheral side of the protrusion in the second joint channel, providing a path for the fluid to flow from the second joint channel, through the connecting groove and the gap between the protrusion and the valve core connection, and into the through hole of the connecting portion.
[0005] Preferably, the valve core of the utility model is provided with a side wall around the valve core, and the side wall of the valve core is used to seal the connection between the first joint and the second joint.
[0006] Preferably, the contact area between the bump and the connecting portion of the utility model is larger than the hole area of the through hole.
[0007] Preferably, the fluid described in the utility model enters from the second joint channel, passes through the connecting groove on the side of the protrusion, and enters the gap between the protrusion and the valve core connection part. Under the action of water pressure, the valve connection part is deformed, so that the gap between the protrusion and the valve core connection part is expanded, and the fluid enters the first joint channel through the through hole of the connection part. Conversely, the fluid enters from the first joint channel, and the fluid pressure causes the connection part to deform, so that the connection part and the protrusion are tightly sealed, and the fluid channels of the first joint and the second joint are isolated from each other.
[0008] Compared with the prior art, the utility model has the following advantages:
[0009] 1. The unique design of the utility model enables the valve core to flexibly respond to changes in fluid pressure, achieve precise one-way flow control, effectively prevent backflow, and ensure the stable operation of medical equipment.
[0010] 2. The utility model has a simple structure and is easy to maintain, which reduces medical costs and improves the efficiency of equipment use. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 , is a three-dimensional diagram of the utility model;
[0012] Figure 2 , is a three-dimensional diagram of the utility model;
[0013] Figure 3 , is a cross-sectional view of the utility model;
[0014] Figure 4 , is a three-dimensional diagram of the valve core structure;
[0015] Figure 5 , is a three-dimensional diagram of the second joint structure;
[0016] In the figure: 1 first joint; 2 second joint; 2.1 protrusion; 2.2 connecting groove; 3 valve core; 3.1 connecting part; 3.2 groove structure; 3.3 through hole; 3.4 side wall; 4 first joint fluid channel; 4.1 second joint fluid channel; 4.2 gap. 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] See also Figure 1 , Figure 2 The utility model provides a one-way valve, comprising: a first joint 1, a second joint 2 and a valve core 3.
[0019] See also Figure 3 A groove is provided on the side of the first joint 1 away from the second joint 2, and a thread is provided in the groove for connecting a conventional pipe joint. A first joint fluid channel 4 extending toward the side away from the second joint 2 is provided at the center of the side of the first joint away from the second joint 2 for connecting a liquid pipeline. A groove is provided on the side of the first joint 1 near the second joint 2 for matching the protrusion of the second joint 2.
[0020] See also Figure 3 , Figure 5The second connector 2 is provided with a protrusion 2.1 on the side close to the first connector 1, and the protrusion 2.1 is provided at the end of the fluid channel 4.1 in the second connector 2, and a plurality of connecting grooves 2.2 are provided around the end of the fluid channel 4.1 of the second connector. The second connector 2 is provided with a pointed head with barbs on the side away from the first connector 1, which is used to connect the liquid pipeline. The second connector 2 is provided with a protrusion on the side close to the first connector 1, which is used to cooperate with the first connector 1.
[0021] See also Figure 3 , Figure 4 The valve core 3 includes a connecting portion 3.2 and a side wall 3.4. The valve core 3 is made of elastic material. The side wall 3.4 is used to seal the connection between the first joint 1 and the second joint 2. A groove structure 3.2 is provided in the middle of the connecting portion 3.2, and the groove structure 3.2 is fully fitted with the protrusion 2.1. A through hole 3.3 smaller than the bottom surface of the protrusion 2.1 is provided at the center point of the connecting portion 3.2.
[0022] In terms of specific working methods:
[0023] One-way valve one-way conduction:
[0024] The liquid flows in from the fluid channel 4.1 of the second joint 2, passes through the connecting groove 2.2 and enters the gap 4.2 between the second joint 2 and the valve core 3, and then flows into the gap between the connecting part 3.1 and the protrusion 2.1. Under the action of the fluid pressure, the elastic connecting part 3.1 and the mating surface of the protrusion 2.1 are deformed and protrude toward the first joint 1 to form a circulation gap. The liquid enters the circulation gap, flows out from the through hole 3.3 on the connecting part 3.1, and finally flows into the first joint 1.
[0025] One-way valve one-way shutoff:
[0026] The liquid flows from the fluid channel 4 of the first connector 1 and enters the valve core 3. Due to the pressure of the liquid, the mating surfaces of the connection part 3.2 and the protrusion 2.2 are pressed and deformed toward the protrusion, forming a sealed fit between the connection part 3.2 and the protrusion 2.2. At this time, the entire fluid channel is cut off, forming a one-way seal, and the liquid finally stays in the valve core 3 and the first connector 1.
[0027] 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, comprising a first joint and a second joint, each of which is provided with a channel for fluid to pass through, characterized in that A valve core is provided at the channel connection of the first joint and the second joint, and the valve core is made of elastic material, and the valve core comprises: A connecting portion is formed in the middle of the valve core and protrudes in the direction of the first joint, so that the connecting portion forms a groove structure toward the second joint to adapt to and accommodate a corresponding protrusion arranged in the second joint channel, and a through hole is opened in the middle of the connecting portion; The connecting groove is arranged on the peripheral side of the protrusion in the second joint channel, providing a path for the fluid to flow from the second joint channel, through the connecting groove and the gap between the protrusion and the valve core connecting part, and into the connecting part through hole.
2. A one-way valve as claimed in claim 1, characterized in that A side wall is arranged around the valve core, and the side wall of the valve core is used for sealing the connection between the first joint and the second joint.
3. A one-way valve as claimed in claim 1, characterized in that The contact area between the bump and the connecting portion is larger than the hole area of the through hole.
4. A one-way valve as claimed in claim 1, characterized in that The fluid enters from the second joint channel, passes through the connecting groove on the side of the protrusion, and enters the gap between the protrusion and the valve core connection part. Under the action of water pressure, the valve connection part is deformed, so that the gap between the protrusion and the valve core connection part is expanded, and the fluid enters the first joint channel through the through hole of the connection part. Conversely, the fluid enters from the first joint channel, and the fluid pressure causes the connection part to deform, so that the connection part and the protrusion are tightly sealed, and the first joint and the second joint fluid channels are isolated from each other.