Three-way device with switch

Abstract

The utility model discloses a three-way device with a switch, which comprises a three-way valve body, a valve handle is sleeved in the three-way valve body, three indicating arrows are fixedly connected with the top of the valve handle, a valve core is rotatably sleeved in the three-way valve body, three through holes are arranged on the surface of the valve core, and the three through holes are communicated with the three-way valve body. According to the device, through the linkage design of the rotary knob and the connecting rod and the cooperation of the bottom threaded end and the circular groove, threaded locking can be quickly relieved when the rotary knob rotates, at the moment, the rotary knob is automatically ejected out through the elastic force of the spring, the connecting rod and the circular plate are driven to pull the piston to slide in the valve element, and accurate plugging of the through hole is achieved; according to the structure, by means of the synergistic effect of mechanical transmission and the elastic element, the operation steps are simplified, the piston completely covers the through hole, the plugging efficiency and reliability are remarkably improved, and the structure is particularly suitable for rapid closure under the emergency situation and has operation convenience and sealing stability.

Description

Technical Field

[0001] This utility model belongs to the field of medical three-way valve technology, and specifically relates to a three-way device with a switch. Background Technology

[0002] The medical three-way valve achieves directional flow of liquid by rotating the valve core to switch the connection mode of the three channels. Its L-type / T-type passage design allows for flexible selection of two-way or three-way modes.

[0003] Currently, Chinese utility model patent CN218106490U discloses a medical three-way valve that is easy to install. It includes a valve body, a valve core mounted on the valve body, a first spiral cap, a second spiral cap, a latch, and a small protective cap on the latch. A connecting sleeve is mounted on the valve body via a connecting mechanism. An installation strap is provided on the connecting sleeve. One end of the installation strap has a first connector, and the other end has a second connector. An adhesive tab that mates with the first connector is located on the second connector. The adhesive tab has Velcro. The installation strap has several rubber protective structures. Its main technical effect is to facilitate stable installation of the installation strap on the patient, and the rubber protective structures provide protection, ensuring comfort and reducing discomfort caused to the patient by prolonged installation of the medical three-way valve.

[0004] Traditional three-way valves require precise rotation and adjustment to close completely during actual use. In emergency situations, operational problems may affect the efficiency and safety of medical procedures. To solve the above problems, we provide a three-way device with a switch. Utility Model Content

[0005] The purpose of this invention is to provide a three-way device with a switch to solve the problem mentioned in the background art that traditional three-way valves require precise rotation and adjustment to be fully closed in actual use, and may affect the efficiency and safety of medical operations in emergency situations due to operational problems.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a three-way device with a switch, comprising a three-way valve body, a valve handle sleeved inside the three-way valve body, three indicator arrows fixedly connected to the top of the valve handle, a valve core rotatably sleeved inside the three-way valve body, three through holes opened on the surface of the valve core, the bottom of the valve handle fixedly connected to the valve core, a connecting rod slidably sleeved inside the valve handle and the valve core, a circular plate fixedly connected to the bottom of the connecting rod, a piston sleeved on the surface of the circular plate, a circular groove opened at the top of the valve handle, a knob threadedly connected inside the circular groove, the bottom of the knob fixedly connected to the connecting rod, and a spring sleeved on the surface of the connecting rod.

[0007] Preferably, a sealing gasket is provided inside the circular groove, and the inside of the sealing gasket is sleeved with the connecting rod.

[0008] Preferably, a sealing ring is fitted on the surface of the valve handle, and an annular groove adapted to the sealing ring is formed on the surface of the valve handle.

[0009] Preferably, each of the three ports of the three-way valve body is threaded with a protective cap, and the surface of the protective cap is provided with anti-slip texture.

[0010] In summary, this utility model has the following beneficial effects:

[0011] This device utilizes a linkage design between the knob and the connecting rod, combined with the engagement of the threaded end at the bottom and the circular groove. This allows the knob to quickly release the threaded lock when rotated, at which point the spring force automatically pushes the knob out, causing the connecting rod and the circular plate to pull the piston to slide within the valve core, achieving precise sealing of the through hole. This structure, through the synergistic effect of mechanical transmission and elastic elements, simplifies the operation steps, ensuring complete piston coverage of the through hole, significantly improving sealing efficiency and reliability. It is especially suitable for rapid flow control in emergency situations, combining ease of operation with sealing stability. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0013] Figure 2 This is an exploded cross-sectional view of the structure of this utility model;

[0014] Figure 3 This is an exploded cross-sectional view of a portion of the structure of this utility model.

[0015] Reference numerals: 1. Three-way valve body; 2. Valve handle; 3. Indicator arrow; 4. Valve core; 5. Through hole; 6. Knob; 7. Connecting rod; 8. Circular plate; 9. Piston; 10. Spring; 11. Circular groove; 12. Sealing gasket; 13. Sealing ring; 14. Protective cap. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings.

[0017] Example 1:

[0018] refer to Figure 1-3A three-way device with a switch includes a three-way valve body 1, a valve handle 2 sleeved inside the three-way valve body 1, three indicator arrows 3 fixedly connected to the top of the valve handle 2, a valve core 4 rotatably sleeved inside the three-way valve body 1, three through holes 5 opened on the surface of the valve core 4, the bottom of the valve handle 2 fixedly connected to the valve core 4, a connecting rod 7 slidably sleeved inside the valve handle 2 and the valve core 4, a circular plate 8 fixedly connected to the bottom of the connecting rod 7, a piston 9 sleeved on the surface of the circular plate 8, a circular groove 11 opened at the top of the valve handle 2, a knob 6 threadedly connected inside the circular groove 11, the bottom of the knob 6 fixedly connected to the connecting rod 7, and a spring 10 sleeved on the surface of the connecting rod 7.

[0019] refer to Figure 3 A sealing gasket 12 is provided inside the circular groove 11. The inside of the sealing gasket 12 is sleeved with the connecting rod 7. By providing the sealing gasket 12, the sealing performance between the connecting rod 7 and the valve handle 2 can be improved.

[0020] refer to Figure 2 A sealing ring 13 is fitted on the surface of the valve handle 2, and an annular groove adapted to the sealing ring 13 is opened on the surface of the valve handle 2. By setting the sealing ring 13, the sealing performance between the valve handle 2 and the three-way valve body 1 can be improved.

[0021] refer to Figure 1 All three ports of the three-way valve body 1 are threaded with protective caps 14. The surface of the protective caps 14 is provided with anti-slip texture, which makes it easy to turn the protective caps 14.

[0022] Brief description of the usage process: By turning the knob 6, the connecting rod 7 will rotate. When the threaded end of the knob 6 is disengaged from the circular groove 11, the spring 10 will push the knob 6 out, causing the knob 6 to move the connecting rod 7. At the same time, the connecting rod 7 will drive the piston 9 to slide inside the valve core 4 through the circular plate 8, so that the piston 9 will block the through hole 5, thereby effectively facilitating the quick and accurate sealing and closing of the device.

[0023] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A three-way device with a switch, comprising a three-way valve body (1), characterized in that: The inside of the three-way valve body (1) is sleeved with a valve handle (2), the top of the valve handle (2) is fixedly connected with three indicating arrows (3), the inside of the three-way valve body (1) is rotatably sleeved with a valve core (4), the surface of the valve core (4) is provided with three through holes (5), the bottom of the valve handle (2) is fixedly connected with the valve core (4), the inside of the valve handle (2) and the valve core (4) is slidably sleeved with a connecting rod (7), the bottom of the connecting rod (7) is fixedly connected with a circular plate (8), the surface of the circular plate (8) is sleeved with a piston (9), the top of the valve handle (2) is provided with a circular recess (11), the inside of the circular recess (11) is threadedly connected with a knob (6), the bottom of the knob (6) is fixedly connected with the connecting rod (7), the surface of the connecting rod (7) is sleeved with a spring (10).

2. A three-way device with a switch according to claim 1, characterized in that: The inside of the circular recess (11) is provided with a sealing gasket (12), the inside of the sealing gasket (12) is sleeved with the connecting rod (7).

3. A three-way device with a switch according to claim 1, characterized in that: The surface of the valve handle (2) is sleeved with a sealing ring (13), the surface of the valve handle (2) is provided with an annular groove matched with the sealing ring (13).

4. A three-way device with a switch according to claim 1, characterized in that: The three ports of the three-way valve body (1) are threadedly connected with caps (14), the surface of the cap (14) is provided with anti-skid lines.

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