Temperature sensing on-off valve for straw

Abstract

The temperature sensing on-off valve comprises a valve body, a valve element and a buckle cover, the valve body and the buckle cover are detachably connected and define a cavity, and the valve element is movably arranged in the cavity; a water flow pipeline is arranged on the valve body, a flow intercepting hole is formed in the middle of the water flow pipeline, and an opening of the flow intercepting hole faces the cavity. The valve core is aligned with the opening and comprises a driving spring and a sealing part; the driving spring can stretch out and draw back along with temperature changes. The closing part is used for opening and closing the intercepting hole; when the driving spring extends, the sealing component can be driven away, the intercepting hole is opened, and the water flow pipeline is in a closed state. When the driving spring contracts, the sealing part can be driven into and seal the intercepting hole, and the water flow pipeline is in a cutoff state; compared with the prior art, the sealing performance of blocking the water flow pipeline is higher, and complete blocking can be achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of drinking water utensils, and in particular relates to a temperature-sensing on / off valve for straws. Background Technology

[0002] To prevent children from getting scalded by drinking hot water directly through the straw, children's straw cups are generally equipped with anti-scalding safety structures. Some technologies also use anti-scalding valves, which mainly utilize the properties of temperature-memory alloys to make them more adaptable to changes in water temperature.

[0003] As shown in CN106913159B, the anti-splash straw valve and the straw and water cup equipped with it, the temperature control clamp is a spring made of shape memory alloy. When the temperature is high, it clamps the tube body to deform and block the water flow, and when the temperature is not high, it releases the tube body to restore the tube body to natural conduction. However, this structure is limited by the force of spring contraction and cannot completely block the water flow of the straw. Summary of the Invention

[0004] In order to solve the problems existing in the prior art, this utility model provides a temperature-sensing on / off valve for straws.

[0005] To achieve the above objectives, the present invention adopts the following technical solution.

[0006] A temperature-sensitive on / off valve for straws includes a valve body, a valve core, and a cover. The valve body and the cover are detachably connected and enclose a cavity, with the valve core movably disposed within the cavity. The valve body has a water flow channel with a flow-stopping hole in the middle, the opening of which faces the cavity. The valve core is aligned with the opening and includes a drive spring and a sealing component. The drive spring can extend and retract with temperature changes. The sealing component is used to open and close the flow-stopping hole. When the drive spring extends, it can drive the sealing component away and open the flow-stopping hole, allowing the water flow channel to be open. When the drive spring retracts, it can drive the sealing component in and block the flow-stopping hole, cutting off the water flow.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows: By adopting the above technical solution, a driving spring is used to drive the closing component to move back and forth, thereby opening and closing the intercepting orifice and thus achieving the function of stopping or opening the water flow pipe. Compared with the prior art, this structure provides stronger sealing of the water flow pipe, achieving complete blockage. Furthermore, by placing the valve core on the side of the water flow pipe, the water flowing through the pipe will not directly contact the driving spring and other components in the valve core, ensuring, to a certain extent, that the outgoing water is more hygienic.

[0008] Preferably, when the water flow pipe is in a passable state, the sealing component keeps the opening closed.

[0009] By adopting the above technical solution, the water pipe can always be kept sealed, ensuring the flow of water in and out.

[0010] Preferably, the sealing component includes a valve stem and a plug disposed on the valve stem; the plug is made of a flexible sealing material.

[0011] By adopting the above technical solution and setting a plug made of flexible sealing material, the sealing performance of the intercepting hole and its opening can be ensured.

[0012] Preferably, the drive spring includes at least a first spring, the two ends of which are fixedly connected to the valve stem and the valve body, respectively; the first spring is made of a temperature-sensitive memory alloy.

[0013] By adopting the above technical solution, a first spring made of temperature-sensitive memory alloy is set. When extended, it can push the valve stem away from the throttling hole, and when contracted, it can push the valve stem forward and close the throttling hole.

[0014] Preferably, the drive spring includes a first spring and a second spring; the first spring is made of a temperature-sensitive memory alloy; the valve stem is provided with an abutment ring; the first spring is sleeved on the valve stem and placed between the abutment ring and the valve body; the second spring is sleeved on the valve stem and placed between the abutment ring and the cover.

[0015] By adopting the above technical solution, the drive spring is set as a combination of the first spring and the second spring, and an abutment ring is set on the valve stem to facilitate the blocking and limiting of the first spring and the second spring; the addition of the second spring can further provide elastic force when closing the shut-off orifice, and can further ensure the sealing and shut-off of the water flow pipe in the case of excessively high water temperature.

[0016] Preferably, the first spring extends in an environment with a temperature below 60°C and contracts in an environment with a temperature not lower than 60°C.

[0017] Using the above technical solution, according to the test, when using a straw to drink water, most users can withstand drinking water at 60 degrees Celsius. Therefore, the deformation temperature of the first spring is set at 60 degrees Celsius.

[0018] Preferably, the cover has at least two hooks circumferentially; the valve body has corresponding fastening holes; the hooks are fastened to the fastening holes.

[0019] By adopting the above technical solution, and through the combination of hooks and snap holes, the cover can be easily and detachably connected to the valve body, and both assembly and disassembly are quick.

[0020] Preferably, the two ends of the water pipe are an inlet and an outlet, respectively.

[0021] The above technical solution makes it easy to clearly define the inlet and outlet of the on / off valve.

[0022] As a preferred option, both the inlet and outlet can be fitted with suction tubes.

[0023] The above technical solution allows users to use the on / off valve flexibly. The on / off valve can be set at the water inlet end of the suction pipe, the water outlet end, or the middle. Attached Figure Description

[0024] Figure 1 This is a three-dimensional exploded structural diagram of the present invention.

[0025] Figure 2 This is a cross-sectional structural diagram of the present invention in the passage state.

[0026] Figure 3 This is a cross-sectional structural diagram of the present invention in the state of flow interruption.

[0027] Figure 4 This is a cross-sectional structural diagram of the valve body.

[0028] Figure 5 This is a cross-sectional structural diagram of the valve stem and plug assembly. Detailed Implementation

[0029] To make the technical solution of this utility model clearer, the following description is in conjunction with the appendix. Figures 1 to 5 This specification provides a detailed description of the present invention. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the scope of protection of the present invention.

[0030] This utility model is a temperature-sensitive on / off valve for straws, including a valve body 1, a valve core 2 and a cover 3; wherein the valve body 1 and the cover 3 are detachably connected and enclose a cavity 4, and the valve core 2 is movably disposed in the cavity 4.

[0031] Specifically, the valve body 1 is provided with a water flow pipe 10, with an inlet 11 and an outlet 12 at both ends, which can be connected to a suction pipe as needed; the water flow pipe 10 is provided with a cut-off hole 101 in the middle, and the opening 102 of the cut-off hole 101 faces the cavity 4.

[0032] Specifically, the cover 3 is provided with at least two hooks 31 around its circumference, and the valve body 1 is provided with corresponding fastening holes 13. After the hooks 31 are fastened to the fastening holes 13, the valve body 1 and the cover 3 are detachably connected, and water can flow into the cavity 4 from the fastening holes 13, which makes it easier for the valve core 2 to sense the water temperature. Of course, the cover 3 and the valve body 1 can also be connected by threaded connection or other methods, and the fastening connection in this embodiment is not limited. The fastening connection in this embodiment is only considered to enable faster insertion and disassembly.

[0033] In one embodiment, the valve core 2 includes a valve stem 21, a first spring 22, and a second spring 23; the top of the valve stem 21 is also provided with a plug 24 made of flexible sealing material, which is aligned with the shut-off hole 101. The flexible sealing material can be silicone, rubber, TPE, or other materials; the valve stem 21 is also provided with an abutment ring 211, wherein the first spring 22 is sleeved on the valve stem 21 and placed between the abutment ring 211 and the valve body 1, and the second spring 23 is sleeved on the valve stem 21 and placed between the abutment ring 211 and the cover 3.

[0034] Specifically, the first spring 22 is made of a temperature-sensitive memory alloy, which is in an extended state in an environment with a temperature below 60°C and in a contracted state in an environment with a temperature not below 60°C.

[0035] When in use, when the water temperature is not lower than 60° (i.e., the water temperature is too hot, such as 70°), the first spring 22 contracts, and the second spring 23 can return from the compressed state to the natural state, pushing the valve stem 21 into the shut-off hole 101. Finally, after the plug 24 on the valve stem 21 completely fills the shut-off hole 101, the passage of the water pipe 10 can be cut off. When the water temperature drops to below 60° (i.e., the water temperature is suitable for drinking, such as 50°), the first spring 22 changes from the contracted state to the extended state, and at the same time overcomes the force of the second spring 23 to drive the valve stem 21 away from the shut-off hole 101. Finally, the plug 24 leaves the shut-off hole 101. At this time, the second spring 23 is in the compressed state, and the top of the plug 24 keeps the opening 102 of the shut-off hole 101 sealed, so that the water pipe 10 is sealed, ensuring that the water flows in from the inlet 11 and out from the outlet 12.

[0036] In another embodiment, the valve core 2 includes a valve stem 21 and a first spring 22; the top of the valve stem 21 is also provided with a plug 24 made of flexible sealing material, which is aligned with the shut-off hole 101. The flexible sealing material can be silicone, rubber, TPE, or other materials; the first spring 22 is sleeved on the valve stem 21, with one end fixed to the valve body 1 and the other end fixed to the valve stem 21; the first spring 22 is made of temperature-sensitive memory alloy, which is in an extended state in an environment with a temperature below 60°C and in a contracted state in an environment with a temperature not lower than 60°C.

[0037] When in use, when the water temperature is not lower than 60° (i.e., the water temperature is too hot, such as 70°), the first spring 22 contracts, driving the valve stem 21 to push into the cut-off hole 101. Finally, the plug 24 on the valve stem 21 completely fills the cut-off hole 101, thus cutting off the passage of the water pipe 10. When the water temperature drops to below 60° (i.e., the water temperature is suitable for drinking, such as 50°), the first spring 22 changes from the contracted state to the extended state, driving the valve stem 21 away from the cut-off hole 101. Finally, the plug 24 leaves the cut-off hole 101. At this time, the top of the plug 24 keeps the opening 102 of the cut-off hole 101 sealed, keeping the water pipe 10 sealed and ensuring that the water flows in from the inlet 11 and out from the outlet 12.

[0038] In the above-mentioned solution of this utility model, the valve core 2 is set on the side of the water flow pipe 10. The water flow will not directly contact the valve stem 21, the first spring 22 and the second spring 23 in the valve core 2 when it flows through the water flow pipe 10, which can ensure that the water output is more hygienic to a certain extent.

[0039] It should be noted that in this embodiment, the deformation temperature of the first spring 22 is set to 60°, but it can also be 50°, which can be set as needed.

Claims

1. A temperature-sensitive on / off valve for straws, comprising a valve body (1), a valve core (2), and a cover (3), wherein the valve body (1) and the cover (3) are detachably connected and enclose a cavity (4), and the valve core (2) is movably disposed within the cavity (4); characterized in that: The valve body (1) is provided with a water flow pipe (10), and the middle of the water flow pipe (10) is provided with a cut-off hole (101), and the opening (102) of the cut-off hole (101) faces the cavity (4). The valve core (2) is aligned with the opening (102), and includes a drive spring and a closing component; The drive spring can expand and contract with changes in temperature; The sealing component is used to open and close the flow-closing orifice (101). When the drive spring extends, it can drive away the closed part and open the intercepting hole (101), and the water flow pipe (10) is in a passable state; When the drive spring contracts, it can drive the sealing component into and block the flow-stopping hole (101), and the water flow pipe (10) is in a state of interruption.

2. The temperature-sensing on / off valve for a straw according to claim 1, characterized in that: When the water flow pipe (10) is in the open state, the sealing component keeps the opening (102) closed.

3. The temperature-sensing on / off valve for a straw according to claim 1, characterized in that: The sealing component includes a valve stem (21) and a plug (24) disposed on the valve stem (21). The plug (24) is made of flexible sealing material.

4. The temperature-sensing on / off valve for a straw according to claim 3, characterized in that: The drive spring includes at least a first spring (22), whose two ends are fixedly connected to the valve stem (21) and the valve body (1), respectively; The first spring (22) is made of temperature-sensitive memory alloy.

5. A temperature-sensing on / off valve for a straw according to claim 3, characterized in that: The drive spring includes a first spring (22) and a second spring (23); The first spring (22) is made of a temperature-sensitive memory alloy; The valve stem (21) is provided with an abutment ring (211); The first spring (22) is sleeved on the valve stem (21) and placed between the abutment ring (211) and the valve body (1); The second spring (23) is sleeved on the valve stem (21) and placed between the abutment ring (211) and the cover (3).

6. A temperature-sensing on / off valve for a straw according to claim 4 or 5, characterized in that: The first spring (22) extends in an environment with a temperature below 60°C and contracts in an environment with a temperature not below 60°C.

7. A temperature-sensing on / off valve for a straw according to claim 1, characterized in that: The cover (3) has at least two hooks (31) in the circumferential direction; A corresponding snap-fit ​​hole (13) is provided on the valve body (1); The hook (31) is fastened to the fastening hole (13).

8. A temperature-sensing on / off valve for a straw according to claim 1, characterized in that: The two ends of the water pipe (10) are the inlet (11) and the outlet (12).

9. A temperature-sensing on / off valve for a straw according to claim 1, characterized in that: Both the inlet (11) and outlet (12) can be connected to a suction tube.

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