Micro water replenishment valve

Abstract

The utility model provides a kind of micro water replenishing valve, including liquid inlet pipe, float and valve core;The density of float is lower than the density of liquid or float is cavity structure, and float can move up and down along liquid inlet pipe;Valve core is located at the bottom of float, and valve core can gradually close the pipe orifice of liquid inlet pipe in the process of moving up with float, and valve core can gradually open the pipe orifice of liquid inlet pipe in the process of moving down with float;Limiting piece that limits the position of float moving down is provided on liquid inlet pipe.The micro water replenishing valve of the utility model is suitable for the water replenishing of small container in medical technology field, is arranged at the lower end of liquid inlet pipe of container, small in size, can hardly occupy the volume of container, and moreover, simple structure, easy operation, stable and reliable operation.

Description

Technical Field

[0001] This utility model relates to the field of biomedical technology equipment, and in particular to a miniature water supply valve for a small medical container. Background Technology

[0002] Water tanks typically use a water supply valve, usually employing a float-lever structure for water replenishment. When the water level in the tank is low, the float is positioned low, the valve opens, and tap water flows into the container. As the water level rises, the float rises, lifting the valve core via the lever until the inlet is closed, and the water supply valve stops replenishing water. In the medical device field, because the containers must meet medical-grade requirements, and medical containers generally have a smaller volume, existing water supply structures cannot meet the requirements of medical containers. Utility Model Content

[0003] This invention provides a miniature water supply valve to solve at least one of the above-mentioned problems.

[0004] According to one aspect of the present invention, a miniature water supply valve is provided, comprising an inlet pipe, a float, and a valve core;

[0005] The density of the float is lower than that of the liquid, or the float has a hollow structure, and the float can move up and down along the liquid inlet pipe;

[0006] The valve core is located at the bottom of the float. As the float moves upward, the valve core can gradually close the inlet of the liquid inlet pipe. As the float moves downward, the valve core can gradually open the inlet of the liquid inlet pipe.

[0007] The inlet pipe is equipped with a limiting device to restrict the downward movement of the float.

[0008] The miniature water supply valve of this invention is located at the lower end of the liquid inlet pipe of the container. It is small in size, hardly occupies the volume of the container, and has a simple structure, is easy to operate, and is stable and reliable in operation.

[0009] In some embodiments, the present invention further includes a magnetic suction element disposed on the inlet pipe and a magnetically attracted element disposed on the upper part of the float. Thus, by increasing the closing pressure of the regulating valve core through the magnetic suction structure, reliable automatic water replenishment of the miniature water replenishment valve is achieved.

[0010] In some embodiments, the magnetic suction component of this invention can be temporarily fixed at a certain height in the liquid inlet pipe.

[0011] In some embodiments, the outer surface of the liquid inlet pipe of this invention is provided with external threads; the magnetic suction element is annular, and the inner surface is provided with internal threads that are adapted to the external threads.

[0012] In some embodiments, the upper surface of the valve core of this invention is hemispherical or conical, and its outer diameter is larger than the inner diameter of the inlet pipe.

[0013] In some embodiments, the cross-section of the float of this invention is annular and is sleeved on the liquid inlet pipe.

[0014] In some embodiments, the float of this invention includes an annular upper float structure and a lower float structure, which are connected by a connector. The gap between the connectors allows liquid to flow out.

[0015] In some embodiments, the limiting member of this utility model is rod-shaped and located between the upper floating body structure and the lower floating body structure. Its free end is inclined upward, and the distance between the free end of the limiting member and the central axis of the liquid inlet pipe is greater than the inner radius of the upper floating body structure.

[0016] In some embodiments, the limiting member of this invention is elastic. This facilitates the installation of the float.

[0017] In some embodiments, the upper part of the float of the present invention is provided with a clamping member extending upward from the inside. The clamping member includes two opposing, arc-shaped parts, and a flange extends outward from the top of the clamping member. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a miniature water supply valve according to one embodiment of the present invention.

[0019] Figure 2 for Figure 1 The diagram shows the structure of the miniature water supply valve in use.

[0020] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0021] Figure 4 for Figure 1 A schematic diagram of the structure of the floating body in the diagram.

[0022] Figure label:

[0023] 1-Liquid inlet pipe, 2-Magnetic suction element, 3-Magnetized element;

[0024] 4-Float, 41-Upper float, 42-Lower float, 43-Connector, 44-Clamping component;

[0025] 5-Limiting component, 6-Valve core, 7-Container, 8-Discharge pipe. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0028] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising" or "including" include not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] The present invention will now be described in further detail with reference to the accompanying drawings.

[0030] Figure 1-4 The structure of a miniature water supply valve according to one embodiment of the present invention is schematically shown.

[0031] refer to Figure 1-4 As shown, the miniature water supply valve includes an inlet pipe 1, a float 4, and a valve core 6.

[0032] The float 4 can be made of a material with a density lower than that of the liquid. The float 4 can also be a hollow structure, and its buoyancy in the liquid must be greater than its own weight.

[0033] The float 4 is located at the lower part of the liquid inlet pipe 1 and can move up and down along the liquid inlet pipe 1.

[0034] The valve core 6 is located at the bottom of the float 4. As the float moves upward, the valve core 6 gradually closes the opening of the inlet pipe 1; as the float moves downward, the valve core 6 gradually opens the opening of the inlet pipe 1. In this embodiment, the upper surface of the valve core 6 is conical, with its outer diameter larger than the inner diameter of the inlet pipe 1, which facilitates sealing the opening of the inlet pipe 1. In other embodiments, the upper surface of the valve core 6 may also be hemispherical or other shapes. The valve core 6 can be made of a flexible material, such as silicone rubber.

[0035] The inlet pipe 1 is also equipped with a limiting component 5 to restrict the downward movement of the float 4. The limiting component 5 can prevent the float 4 from detaching from the inlet pipe 1 after the liquid level drops.

[0036] The miniature water supply valve of this invention is located at the lower end of the liquid inlet pipe of the container. It is small in size, hardly occupies the volume of the container, and has a simple structure and stable and reliable operation.

[0037] If the buoyancy of the float 4 is insufficient to counteract the pressure of the liquid, the inlet of the inlet pipe 1 will not be properly sealed. A magnetic attractor 2 can be installed on the inlet pipe 1, and a magnetically attracted component 3 can be installed on the upper part of the float 4. During the upward movement of the float 4, the magnetically attracted component 3 can gradually approach the magnetic attractor 2. The magnetic attraction between the magnetic attractor 2 and the magnetically attracted component 3 can further press the valve core 6 against the inlet of the inlet pipe 1.

[0038] Adjusting the relative distance between the magnetic attractor 2 and the magnetically attracted component 3 can regulate the relative attractive force between them when the valve core 6 closes the inlet pipe 1. This effectively prevents the valve core 6 from completely blocking the inlet pipe 1 due to pressure differences in the liquid within it. When the liquid level in the container 7 drops, and the sum of the weight of the float 4 and the pressure in the inlet pipe 1 exceeds the sum of the buoyancy force and the magnetic attraction force acting on the float 4, the valve core 6 automatically opens the inlet pipe 1, allowing the container to replenish liquid.

[0039] In some embodiments, the magnetic chuck 2 can be temporarily fixed at a certain height on the inlet pipe 1. For example, a long external thread can be provided on the outer side of the inlet pipe 1, and the magnetic chuck 2 can be designed as a ring, with an internal thread on the inner side of the magnetic chuck 2 that matches the external thread. The position of the magnetic chuck 2 on the inlet pipe 1 can be adjusted according to the density of the solution. When the density of the liquid is relatively low, the position of the magnetic chuck 2 can be set lower, making it closer to the magnetically attracted component 3; conversely, when the density of the liquid is relatively high, the position of the magnetic chuck 2 can be set higher, making it farther away from the magnetically attracted component 3.

[0040] Both the magnetic attractor 2 and the attracted component 3 can be magnetic materials, or one of them can be magnetic while the other is a ferromagnetic material. Their relative positions can be adjusted on the liquid tube 1 or the float 4, or both. Both the magnetic attractor 2 and the attracted component 3 can be encased in medical materials for medical-grade applications.

[0041] The float 4 can be configured with a ring-shaped cross-section and fitted onto the outside of the liquid inlet pipe 1.

[0042] refer to Figure 4As shown, in this embodiment, the float 4 includes an annular upper float structure 41 and a lower float structure 42, which are connected by four connectors 43. The connectors 43 can be hollow or made of a material with a density lower than that of the liquid, similar to the upper and lower float structures 41 and 42. The limiting member 5 is rod-shaped and positioned in the gap between the connectors 43, with its free end inclined upwards. The distance between its free end and the central axis of the inlet pipe 1 is greater than the inner radius of the upper float structure 41. The limiting member 5 can be made of plastic and is elastic. During installation, the float 4 is inserted into the inlet pipe 1 from the top. The limiting rod 5 is compressed and deformed until the float 4 is fully inserted. After the float 4 is inserted into the inlet pipe 1, the limiting rod 5 returns to the gap between the connectors 43, preventing the float 4 from falling off. In other embodiments, the limiting member 5 can also be annular, fitted on the outside of the inlet pipe 1 to limit the downward movement of the float 4. The upper floating structure 41, the lower floating structure 42, and the connecting piece 43 can also be integrally formed.

[0043] The upper part of the float 4 is provided with a clamping member 44 extending upward from the inside. The clamping member 44 consists of two opposing, arc-shaped parts, and a flange 45 extends outward from the top of the clamping member 44. The outer side of the clamping member 44 can be used to install an annular magnetic member 2 or a magnetically attracted member 3. The inner side of the clamping member 44 fits against the outer side of the liquid inlet pipe 1, which can keep the float 4 from swaying during up and down movement.

[0044] refer to Figure 1 and Figure 2 As shown, the water supply valve and outlet pipe 8 of this invention are installed on the top cover of container 7. When the liquid level in container 7 is low, the float 4 slides to the bottom under the action of gravity, and the valve core 6 moves away from the inlet of the inlet pipe 1. The liquid can flow into container 7 through the space between the inlet of the inlet pipe 1 and the connector 43, and the pipeline is unobstructed. When the liquid level in container 7 increases, the float 4 will rise with the liquid level until the valve core 6 blocks the inlet of the inlet pipe 1. During the upward movement of the float 4, the magnetic attractor 2 and the magnetically attracted part 3 gradually approach each other, generating a mutual attraction, which can make the valve core 6 at the bottom of the float 4 block the inlet of the inlet pipe 1 more tightly.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A miniature water supply valve, characterized in that, Includes inlet pipe, float, and valve core; The density of the float is lower than that of the liquid or the float has a hollow structure, and the float can move up and down along the liquid inlet pipe; The valve core is located at the bottom of the float. As the float moves upward, the valve core can gradually close the opening of the inlet pipe. As the float moves downward, the valve core can gradually open the opening of the inlet pipe. The inlet pipe is equipped with a limiting device that restricts the downward movement of the float.

2. The miniature water supply valve according to claim 1, characterized in that, It also includes a magnetic attractor provided on the liquid inlet pipe, and a magnetically attracted component provided on the upper part of the float.

3. The miniature water supply valve according to claim 2, characterized in that, The magnetic suction device can be temporarily fixed at a certain height on the inlet pipe.

4. The miniature water supply valve according to claim 3, characterized in that, The outer surface of the liquid inlet pipe is provided with external threads; the magnetic suction element is annular, and the inner surface is provided with internal threads that are adapted to the external threads.

5. The miniature water supply valve according to claim 1, characterized in that, The upper surface of the valve core is hemispherical or conical, and its outer diameter is larger than the inner diameter of the inlet pipe.

6. The miniature water supply valve according to claim 1, characterized in that, The cross-section of the float is annular and it is fitted onto the liquid inlet pipe.

7. The miniature water supply valve according to claim 6, characterized in that, The float comprises an annular upper float structure and a lower float structure, which are connected by a connector.

8. The miniature water supply valve according to claim 7, characterized in that, The limiting member is rod-shaped and located between the upper floating body structure and the lower floating body structure; The free end of the limiting member is inclined upward, and the distance between its free end and the central axis of the liquid inlet pipe is greater than the inner radius of the floating body structure.

9. The miniature water supply valve according to claim 8, characterized in that, The limiting component is elastic.

10. The miniature water supply valve according to claim 7, characterized in that, The upper part of the float is provided with a clamping member extending upward from the inside. The clamping member consists of two opposing, arc-shaped parts, and the top of the clamping member extends outward with a flange.

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