Active anti-scald straw cup valve

Abstract

The utility model provides an active anti-scald straw cup valve, belongs to the technical field of control valves, and solves the problem that water cannot be normally sucked out when a valve is used for sucking forcefully or a water bottle is inclined in the prior art. A channel and an installation cavity communicated with the channel are formed in the valve body, a water inlet is formed in the valve body, a spring arranged in the axial direction of the channel is installed in the installation cavity, the end, away from the channel, of the spring abuts against a ball sealer, and the side, away from the spring, of the ball sealer abuts against a bimetallic strip. The force generated when the bimetallic strip deforms is larger than the elastic force of the spring. The bimetallic strip is arranged to sense the change of water temperature, the bimetallic strip can deform into an arch shape after encountering high-temperature water, the plugging ball is pushed to the channel for plugging, and therefore the risk of scalding caused by the high-temperature water is avoided, when the water temperature is appropriate, the bimetallic strip is in a flat state, and the plugging ball is always kept spaced from the channel under the action of the spring, so that the safety of a user is improved. It is guaranteed that water can be sucked out normally when a user sucks the water bottle or the water bottle inclines.

Description

Technical Field

[0001] The utility model belongs to the technical field of control valves, in particular to an active scald-proof straw cup valve. Background Art

[0002] Some baby bottles or water bottles are equipped with a straw to assist in drinking milk or water. When high-temperature milk or water is filled in the bottle, some infants and young children who have no awareness of the danger will directly inhale the milk or water through the straw, causing burns to the esophagus.

[0003] In order to avoid the risk of scalding, a temperature-controlled valve is set at the water inlet of the straw. When the liquid temperature is high, the valve will automatically close. The valve will automatically open after the temperature drops to a suitable temperature. Only then can the liquid be sucked out through the straw, ensuring the safety of the user. The existing valve is shown in the patent with publication number CN205226595U, which discloses a kettle straw valve and a kettle provided with the valve. The kettle straw valve includes a water inlet, a valve body upper cover, and the valve body upper cover has a water outlet. It also includes a valve body lower cover and a temperature-controlled memory elastomer. The valve body lower cover is connected to the lower part of the valve body upper cover. The valve body lower cover is provided with a lower blocking part. The lower end of the temperature-controlled memory elastomer is against the upper surface of the lower blocking part. The upper end of the temperature-controlled memory elastomer is provided with a sealing ball. The inner side of the valve body upper cover is provided with an inner sealing part that can form a seal with the sealing ball to block the connection between the water inlet and the water outlet. The kettle straw valve can be opened and closed automatically at different temperatures. When the water in this valve is at room temperature, the sealing ball can easily block the water outlet if the user sucks too hard (Bernoulli's principle, that is, the greater the flow rate, the smaller the pressure, the pressure at the lower end of the sealing ball is greater than the pressure at the upper end, and the sealing ball will be pushed toward the water outlet) or the water bottle is tilted, resulting in the water not being sucked out normally. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide an active anti-scalding straw cup valve, in which a bimetallic strip is arranged to sense changes in water temperature. When encountering high-temperature water, the bimetallic strip will be deformed into an arch shape, pushing the blocking ball into the channel and blocking it, thereby avoiding the risk of scalding by high-temperature water. When the water temperature is appropriate, the bimetallic strip is in a flat state, and the blocking ball is always kept apart from the channel under the action of a spring, ensuring that water can be sucked out normally when the user sucks or the water bottle is tilted.

[0005] The technical solution adopted by the utility model is as follows:

[0006] An active anti-scalding straw cup valve comprises a valve body, wherein the valve body is provided with a channel and an installation cavity connected to the channel, the valve body is provided with a water inlet connected to the installation cavity, a spring arranged axially along the channel is installed in the installation cavity, an end of the spring away from the channel abuts against a blocking ball for blocking the channel, a side of the blocking ball away from the spring abuts against a bimetallic strip, and a force generated when the bimetallic strip is deformed is greater than the elastic force of the spring.

[0007] Preferably, a sealing ring movably mounted on the spring and cooperating with the sealing ball is clamped in the installation cavity.

[0008] Preferably, an annular groove for installing a sealing ring is provided on the inner wall of the installation cavity.

[0009] Preferably, a limiting cylinder is installed in the installation cavity and the sealing ball is movably arranged in the limiting cylinder.

[0010] Preferably, an opening is provided on one end face of the valve body away from the channel, an end cover for sealing the opening is detachably connected to the valve body, and the bimetallic strip is provided on the inner side of the end cover.

[0011] Preferably, a porous annular clamping plate is fixedly sleeved on the limiting cylinder, an annular groove cooperating with the porous annular clamping plate is opened on the inner wall of the mounting cavity, one end of the annular groove is connected to the opening, and a limiting rod abutting against the end cover is connected to the porous annular clamping plate.

[0012] Preferably, a screw threadably penetrates the end cover and is threadably connected to the valve body.

[0013] Preferably, the valve body is provided with a hollow joint communicating with the channel.

[0014] Preferably, the hollow joint is stepped.

[0015] Preferably, a limiting groove for placing a spring is provided in the installation cavity, and the limiting groove is coaxially arranged with the channel.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0017] A bimetallic strip is set to sense changes in water temperature. When encountering high-temperature water, the bimetallic strip will deform into an arch shape, pushing the blocking ball into the channel and blocking it, thereby avoiding the risk of scalding by high-temperature water. When the water temperature is appropriate, the bimetallic strip is flat, and the blocking ball always remains separated from the channel under the action of the spring, ensuring that water can be sucked out normally when the user pumps or the water bottle is tilted. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of a cross-sectional structure provided for an embodiment of the utility model;

[0020] Figure 2 A schematic diagram of a valve closed state provided by an embodiment of the utility model;

[0021] Figure 3 A schematic diagram of the three-dimensional structure of a limiting cylinder, a porous annular clamping plate and a limiting rod provided in an embodiment of the utility model.

[0022] Description of the drawings: 1-hollow joint; 2-channel; 3-sealing ring; 4-water inlet; 5-screw; 6-limit rod; 7-sealing ball; 8-bimetallic strip; 9-limit cylinder; 10-porous annular clamping plate; 11-end cover; 12-annular groove; 13-installation cavity; 14-annular clamping groove; 15-spring; 16-limit groove; 17-valve body. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] Combine the following Figure 1-Figure 3 The utility model is described in detail.

[0027] Example

[0028] An active anti-scalding straw cup valve comprises a valve body 17, in which a channel 2 and an installation cavity 13 connected to the channel 2 are provided, the valve body 17 is provided with a water inlet 4 connected to the installation cavity 13, a spring 15 arranged axially along the channel 2 is installed in the installation cavity 13, one end of the spring 15 away from the channel 2 abuts against a blocking ball 7 for blocking the channel 2, and the side of the blocking ball 7 away from the spring 15 abuts against a bimetallic strip 8, and the force generated when the bimetallic strip 8 is deformed is greater than the elastic force of the spring 15.

[0029] The drinking water valve can be installed at the end of the straw, and the deformation temperature of the bimetallic strip 8 is controlled at about 45°C, that is, when it is greater than 45°C, the bimetallic strip 8 becomes Figure 2 The bimetallic strip 8 pushes the blocking ball 7 upwards and compresses the spring 15 until the blocking ball 7 fits against the end of the channel 2. At this time, water cannot be sucked out. When the temperature is less than 45°C, the bimetallic strip 8 becomes as shown in FIG. Figure 1 In the flat state shown, the spring 15 pushes the blocking ball 7 against the bottom of the installation cavity 13, so that the channel 2 remains open, and the water in the water bottle enters the installation cavity 13 through the water inlet 4 and then enters the straw from the channel 2. The blocking ball 7 can be a ceramic ball with a smooth surface.

[0030] The installation cavity 13 is clamped with a sealing ring 3 which is movably mounted on the spring 15 and cooperates with the blocking ball 7. The inner diameter of the sealing ring 3 is smaller than the radius of the blocking ball 7. The provision of the sealing ring 3 can further enhance the effect of the blocking ball 7 in sealing the channel 2.

[0031] The sealing ring 3 can be interference fit with the installation cavity 13 through its own deformation, and the installation position of the sealing ring 3 can be kept unchanged by friction. However, in the case of external force, the sealing ring 3 still has the problem of slippage, resulting in the sealing ring 3 and the blocking ball 7 being attached to each other under normal water temperature, causing the water to not be sucked out normally. Therefore, an annular groove 14 for installing the sealing ring 3 is opened on the inner wall of the installation cavity 13. The annular groove 14 can limit the slippage of the sealing ring 3.

[0032] The limiting cylinder 9 is installed in the installation cavity 13 and the blocking ball 7 is movably arranged in the limiting cylinder 9. The limiting cylinder 9 limits the movement of the blocking ball 7 so that it can only move along the axial direction of the limiting cylinder 9, thereby preventing the blocking ball 7 from deviating to one side after the bimetallic strip 8 is deformed, so that the blocking ball 7 cannot abut against the inner ring of the sealing ring 3.

[0033] An opening is provided on one end face of the valve body 17 away from the channel 2, and an end cap 11 for blocking the opening is detachably connected to the valve body 17, and the bimetallic strip 8 is arranged on the inner side of the end cap 11. The detachable end cap 11 is provided to facilitate the installation and removal of the bimetallic strip 8, the spring 15 and the blocking ball 7.

[0034] A porous annular cardboard 10 is fixedly sleeved on the limiting cylinder 9, and an annular groove 12 cooperating with the porous annular cardboard 10 is provided on the inner wall of the installation cavity 13, one end of the annular groove 12 is connected to the opening, and a limiting rod 6 abutting against the end cover 11 is connected to the porous annular cardboard 10. The limiting cylinder 9 can be inserted into the annular groove 12 through the porous annular cardboard 10, and the limiting rod 6 abuts against the end cover 11, so that the limiting cylinder 9 remains in position. After removing the end cover 11, the limiting cylinder 9 can be taken out, and then the sealing ring 3 can be conveniently taken out. The porous structure set on the porous annular cardboard 10 facilitates the bimetallic strip 8 to smoothly contact the water, thereby sensing the water temperature.

[0035] The end cover 11 is provided with a screw 5 threadedly connected to the valve body 17. The end cover 11 can also be connected to the valve body 17 by a buckle connection method. Specifically, a hook is provided on the inner side of the end cover 11, and a slot corresponding to the hook is provided on the valve body 17. Compared with the buckle method, the screw 5 is simpler to disassemble and is convenient for subsequent disassembly and cleaning of the valve. The screw 5 and the spring 15 are made of stainless steel to prevent the screw 5 and the spring 15 from corroding and rusting in water.

[0036] The valve body 17 is provided with a hollow joint 1 which is in communication with the channel 2. A straw can be inserted into the hollow joint 1 to achieve connection between the valve body 17 and the straw. The hollow joint 1 is stepped and can be installed with straws of various sizes. The joint 1 and the valve body 17 are integrally formed to reduce subsequent processing operations.

[0037] The installation cavity 13 is provided with a limiting groove 16 for placing the spring 15, and the limiting groove 16 is coaxially arranged with the channel 2. The limiting groove 16 limits the placement of the spring 15 to prevent the spring 15 from deflecting after compression, causing the spring 15 to lose the abutment with the blocking ball 7, affecting the subsequent blocking of the channel 2 by the blocking ball 7.

[0038] The valve structure of the present application is relatively simple and easy to install. The specific installation operation is: invert the valve body 17 so that the opening of the valve body 17 faces upward. At this time, the spring 15, the sealing ring 3 and the limit cylinder 9 are placed in the specified positions in sequence, and then the blocking ball 7 is placed in the limit cylinder 9. Finally, the end cover 11 with the bimetallic strip 8 is attached to the lower end opening of the valve body 17, and the screw 5 is tightened to complete the installation.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An active anti-scalding straw cup valve, comprising a valve body (17), wherein the valve body (17) is provided with a channel (2) and a mounting cavity (13) communicating with the channel (2), and the valve body (17) is provided with a water inlet (4) communicating with the mounting cavity (13), wherein: A spring (15) arranged axially along the channel (2) is installed in the installation cavity (13); one end of the spring (15) away from the channel (2) abuts against a blocking ball (7) for blocking the channel (2); one side of the blocking ball (7) away from the spring (15) abuts against a bimetallic strip (8); the force generated by the bimetallic strip (8) when deformed is greater than the elastic force of the spring (15).

2. The active anti-scalding straw cup valve according to claim 1, characterized in that: A sealing ring (3) which is movably mounted on the spring (15) and cooperates with the blocking ball (7) is clamped in the installation cavity (13).

3. The active anti-scalding straw cup valve according to claim 2, characterized in that: The inner wall of the installation cavity (13) is provided with an annular groove (14) for installing the sealing ring (3).

4. The active anti-scalding straw cup valve according to claim 1, characterized in that: A limiting cylinder (9) is installed in the installation cavity (13), and a blocking ball (7) is movably arranged in the limiting cylinder (9).

5. The active anti-scalding straw cup valve according to claim 4, characterized in that: An opening is provided on one end face of the valve body (17) away from the channel (2), an end cover (11) for sealing the opening is detachably connected to the valve body (17), and a bimetallic strip (8) is provided on the inner side of the end cover (11).

6. The active anti-scalding straw cup valve according to claim 5, characterized in that: A porous annular clamping plate (10) is fixedly sleeved on the limiting cylinder (9), an annular groove (12) cooperating with the porous annular clamping plate (10) is provided on the inner wall of the mounting cavity (13), one end of the annular groove (12) is connected to the opening, and a limiting rod (6) abutting against the end cover (11) is connected to the porous annular clamping plate (10).

7. The active anti-scalding straw cup valve according to claim 5, characterized in that: The end cover (11) is movably penetrated by a screw (5) threadedly connected to the valve body (17).

8. The active anti-scalding straw cup valve according to claim 1, characterized in that: The valve body (17) is provided with a hollow joint (1) which is in communication with the channel (2).

9. The active anti-scalding straw cup valve according to claim 8, characterized in that: The hollow joint (1) is in a stepped shape.

10. The active anti-scalding straw cup valve according to claim 1, characterized in that: A limiting groove (16) for accommodating a spring (15) is provided in the installation cavity (13), and the limiting groove (16) is coaxially arranged with the channel (2).

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