Valve-free suction nozzle

Abstract

The utility model relates to the technical field of daily utensils, in particular to a suction nozzle without a valve. A valve-free suction nozzle comprises a hollow suction nozzle body, a water outlet channel is formed in the hollow position of the suction nozzle body, an air return channel is formed in the side portion of the suction nozzle body, and an air return structure is arranged on the lower portion of the air return channel to divide the air return channel into an upper air return channel and a lower air return channel. The air return structure is of an inverted trapezoidal structure so that the caliber of the lower portion of the upper air return channel can be gradually decreased from top to bottom, the air return structure is provided with at least one hole, and a water tank is formed between the channel wall of the lower air return channel and the air return structure. The exhaust function of a traditional air return valve is achieved through the design of the large hole, and compared with a traditional V valve, air inlet is smoother. By means of the tension properties of the small holes and water, the function of preventing water leakage when the water cup is inverted can be achieved. The suction nozzle is provided with a through hole and is in a flat runway circle shape, fan-shaped water outlet can be achieved during water outlet, and the problem that the throat is impacted cannot occur.

Description

Technical Field

[0001] The utility model relates to the technical field of daily utensils, in particular to a suction nozzle without a valve. Background Art

[0002] The spouts of existing water cups or milk bottles are all of the return air type, and are generally provided with structures such as a V-shaped one-way valve, a corrugated valve, and a through hole. For example, the technical solution disclosed in Chinese patent CN208541061U is: a spray-proof, leak-proof and breathable water cup, comprising a cup body and a cup cover body, the cup cover body comprising a screw cover, a flip cover, a button assembly and a straw assembly, the outer side of the opening of the cup body is threadedly connected to the inner side of the screw cover, one side of the flip cover is hinged to one side of the top of the screw cover, and the other side of the flip cover is buckled with the other side of the top of the screw cover through the button assembly, the screw cover is provided with a straw fixing hole, and the straw assembly is installed in the straw fixing hole, which is characterized in that: the cup cover body also includes an exhaust assembly, the exhaust assembly includes an elastic exhaust connecting rod, an exhaust hose and an exhaust valve; the flip cover is provided with an exhaust groove, the bottom of the exhaust groove is provided with a connecting rod through hole, the screw cover is provided with an exhaust hole, and the exhaust hole is located directly below the connecting rod through hole; the exhaust valve is installed in the exhaust hole and is connected to the straw assembly through the exhaust hose; the elastic exhaust connecting rod is in the connecting rod through hole, and the lower end of the elastic exhaust connecting rod is in contact with the exhaust valve.

[0003] The above prior art uses a light press on the elastic exhaust connecting rod to push open the exhaust valve, so that the negative pressure generated by the hot water in the cup body is quickly discharged, and the flip cover will not leak due to water droplets generated by the hot water vapor, which has better anti-spraying effect, anti-leakage effect and ventilation effect. The separately set valve not only increases the production cost of the water cup, but also makes the suction nozzle structure complicated and easy to damage. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the utility model provides a nozzle without valves that uses a through hole to realize the function of an air return valve, has smoother air intake than a V-valve, and uses the tension properties of small holes and water to achieve watertightness when inverted. To solve the above technical problems, the utility model provides the following technical solutions:

[0005] A suction nozzle without any valve comprises a hollow suction nozzle body, a water outlet channel is formed in the hollow part of the suction nozzle body, an air return channel is provided on the side of the suction nozzle body, an air return structure is provided at the lower part of the air return channel to separate the air return channel into an upper air return channel and a lower air return channel, the air return structure is an inverted trapezoidal structure so that the caliber of the lower part of the upper air return channel gradually decreases from top to bottom, the air return structure is provided with at least one hole, and a water trough is formed between the channel wall of the lower air return channel and the air return structure.

[0006] The inverted trapezoidal design of the air return structure makes the air flow channel narrower when the air is returned. From the flow formula, we can get: Q=Sv=constant (S is the cross-sectional area, v is the water flow velocity). When the air intake Q remains unchanged, S becomes smaller and V becomes larger, allowing the air flow to enter faster and allowing water to be absorbed faster. The design of the circumferential sunken water tank can ensure that in normal drinking scenarios, water will not cover the air return hole, but enter the water tank first, preventing the air return hole from being blocked by water and unable to absorb water.

[0007] On the basis of adopting the above technical solution, the utility model can also adopt the following further technical solution:

[0008] The air return structure has at least two holes, which can be in various forms and shapes, and only need to have the function of opening holes.

[0009] The hole is a large hole, or a small hole, or a combination of a large hole and a small hole. The diameter of the large hole is 0-1.5mm, the diameter of the small hole is 0-1.2mm, and the diameter of the small hole is smaller than the diameter of the large hole. The number of large holes and small holes can be set according to actual conditions. The diameter of the large hole within 0-1.5mm can make water form tension on the surface, thereby achieving a sealing effect; and the design of the small hole is mainly to avoid the problem of insufficient air return. The number of small holes can be increased according to actual conditions, and the smaller the small hole diameter, the easier it is to seal water. The diameter of the small hole is 0-1.2mm and slightly smaller than the large hole.

[0010] The air return structure comprises an annular inclined surface inclined from top to bottom toward the center, and a circular horizontal surface of the runway, and the large holes and the small holes are both opened on the horizontal surface.

[0011] The water outlet at the upper end of the nozzle body is a flat runway circle. The design of the flat runway circle at the water outlet can achieve that when the water is sipped, the water flows out in a fan shape, avoiding the problem that the traditional nozzle is large and causes the water column to be an elliptical cross-section water column and then impact the throat, causing choking when drinking water.

[0012] The inner wall of the water outlet channel of the nozzle body is provided with a protruding self-sealing structure, and the water outlet channel of the nozzle body gradually decreases in diameter from the self-sealing structure to the upper water outlet. The self-sealing structure is designed to actively seal water when the straw is bent, and can be in the shape of a triangle or the like. It is only necessary to close the water outlet channel to achieve the function of actively sealing water when the straw is bent. At the same time, a transition of gradually decreasing diameter is provided from the self-sealing structure to the water outlet, which can reduce the water flow rate to achieve the purpose of preventing choking.

[0013] The upper end and the lower end of the water outlet channel are bent at an obtuse angle to form a bending portion, and the lower end of the water outlet channel is a straw connecting cavity, and a straw is clamped in the straw connecting cavity.

[0014] An inclination angle is formed between the straw connecting cavity and the vertical surface, and the inclination angle is 0-45°.

[0015] The straw connecting cavity is accommodated in the lower part of the suction nozzle body, or the straw connecting cavity extends out of the lower surface of the suction nozzle body.

[0016] The inner wall of the straw connecting cavity is provided with a concave annular clamping groove, and the outer wall of the upper end of the straw is provided with a convex annular clamping strip.

[0017] The nozzle body is further provided with a limiting piece extending in a horizontal plane, and a handle is provided on the lower surface of the limiting piece.

[0018] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0019] The utility model realizes the exhaust function of the traditional air return valve by using the design of a large hole. Compared with the traditional V valve, the air intake of the utility model is smoother. By using the small hole and the tension property of water, the function of preventing water leakage when the water cup is inverted can be realized. At the same time, the suction nozzle is a through hole and the flat runway is circular, so the water can be discharged in a fan shape when discharging water, and the problem of impacting the throat will not occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a schematic diagram of the upper structure of a first embodiment of a completely valveless suction nozzle of the present invention.

[0021] Figure 2 The utility model is a schematic diagram of the lower structure of a suction nozzle without valve in an embodiment.

[0022] Figure 3 The utility model is a cross-sectional view of an embodiment of a suction nozzle without a valve.

[0023] Figure 4 The utility model is a bottom view of a suction nozzle body of a suction nozzle without a valve in accordance with an embodiment of the present invention.

[0024] Figure 5 The utility model is a cross-sectional view of a nozzle body of a nozzle without a valve in accordance with an embodiment of the present invention.

[0025] Figure 6 The second embodiment is a cross-sectional view of a suction nozzle body of the utility model, which is a suction nozzle without a valve.

[0026] Among them, the nozzle body 1, the upper air return channel 11, the lower air return channel 12, the water outlet 13, the water outlet channel 14, the bending part 15, the straw connecting cavity 16, the snap-in groove 17, the triangle 18, the air return structure 2, the large hole 21, the small hole 22, the water trough 23, the annular inclined surface 24, the horizontal surface 25, the straw 3, the snap-in strip 31, the limit plate 4, and the handle 41. DETAILED DESCRIPTION

[0027] In conjunction with the accompanying drawings, a suction nozzle without a valve provided by the utility model is further described.

[0028] Embodiment 1, as Figure 1-5 As shown, a suction nozzle without a valve comprises a hollow suction nozzle body 1, a water outlet channel 14 is formed in the hollow part of the suction nozzle body 1, an air return channel is opened on the side of the suction nozzle body 1, and an air return structure 2 is provided at the lower part of the air return channel to separate the air return channel into an upper air return channel 11 and a lower air return channel 12.

[0029] Furthermore, the water outlet 13 at the upper end of the nozzle body 1 is in a flat track shape, so that when the nozzle is closed to discharge water, the water flows out in a fan shape.

[0030] Furthermore, the inner wall of the water outlet channel 14 of the nozzle body 1 is provided with a protruding triangular body 18. The design of the triangular body 18 can actively seal water when the nozzle body 1 is bent, and close the water outlet channel 14, thereby achieving the function of actively sealing water when the nozzle body 1 is bent.

[0031] Furthermore, the diameter of the water outlet channel 14 of the nozzle body 1 gradually decreases from the triangular body 18 to the upper water outlet 13 to gradually reduce the water flow rate.

[0032] Furthermore, the upper end and the lower end of the water outlet channel 14 are bent at an obtuse angle to form a bent portion 15 , and the lower end of the water outlet channel 14 is a straw connecting cavity 16 .

[0033] Furthermore, an inclination angle α is formed between the straw connecting cavity 16 and the vertical surface, and the inclination angle α is 0-45°.

[0034] Furthermore, the straw connecting cavity 16 is accommodated in the lower part of the nozzle body.

[0035] Furthermore, the air return structure 2 is an inverted trapezoidal structure so that the diameter of the lower part of the upper air return channel 11 gradually decreases from top to bottom. The air return structure 2 is provided with two large holes 21 and three small holes 22, and a water trough 23 is formed between the channel wall of the lower air return channel 12 and the air return structure 2.

[0036] Furthermore, the diameter of the large hole 21 is 0-1.5 mm, the diameter of the small hole 22 is 0-1.2 mm, and the diameter of the small hole 22 is smaller than the diameter of the large hole 21 .

[0037] Furthermore, the air return structure 2 includes an annular inclined surface 24 inclined from top to bottom toward the center, and a runway circular horizontal surface 25 , and the large holes 21 and the small holes 22 are both opened on the horizontal surface 25 .

[0038] Furthermore, the straw connecting cavity 16 is clamped with a straw 3 , wherein an inner wall of the straw connecting cavity 16 is provided with a concave annular clamping groove 17 , and an outer wall of the upper end of the straw 3 is provided with a convex annular clamping strip 31 .

[0039] Furthermore, the nozzle body 1 is also provided with a limiting plate 4 extending in a horizontal plane, and a handle 41 is provided on the lower surface of the limiting plate 4 to facilitate the disassembly of the nozzle body 1 .

[0040] Embodiment 2, as Figure 6 As shown, the straw connection cavity 16 extends out of the lower surface of the nozzle body 1, and the straw 3 is inserted into the bottom end of the straw connection cavity 16 and connected to the nozzle body 1. Others are the same as those in the first embodiment.

[0041] The present invention has been illustrated and described with reference to the preferred embodiments. However, it will be understood by those skilled in the art that various changes in form and details may be made within the scope of the claims.

Claims

1. A completely valveless suction nozzle, comprising a hollow suction nozzle body, wherein the hollow portion of the suction nozzle body forms a water outlet channel, characterized in that An air return channel is provided on the side of the nozzle body, and an air return structure is provided at the lower part of the air return channel to separate the air return channel into an upper air return channel and a lower air return channel. The air return structure is an inverted trapezoidal structure so that the caliber of the lower part of the upper air return channel gradually decreases from top to bottom. The air return structure is provided with at least one hole, and a water trough is formed between the channel wall of the lower air return channel and the air return structure.

2. A completely valveless nozzle according to claim 1, characterized in that The air return structure has at least two holes.

3. A completely valveless nozzle according to claim 1 or 2, characterized in that The hole is a large hole, or a small hole, or a combination of a large hole and a small hole. The diameter of the large hole is 0-1.5 mm, the diameter of the small hole is 0-1.2 mm, and the diameter of the small hole is smaller than that of the large hole.

4. A completely valveless suction nozzle according to claim 3, characterized in that The air return structure comprises an annular inclined surface inclined from top to bottom toward the center, and a circular horizontal surface of the runway, and the large holes and the small holes are both opened on the horizontal surface.

5. A completely valveless suction nozzle according to claim 1 or 2, characterized in that The upper water outlet of the nozzle body is a flat runway circle, the inner wall of the water outlet channel of the nozzle body is provided with a protruding self-sealing structure, and the diameter of the water outlet channel of the nozzle body gradually decreases from the self-sealing structure to the upper water outlet.

6. A completely valveless suction nozzle according to claim 1 or 2, characterized in that The upper end and the lower end of the water outlet channel are bent at an obtuse angle to form a bending portion, and the lower end of the water outlet channel is a straw connecting cavity, and a straw is clamped in the straw connecting cavity.

7. A completely valveless suction nozzle according to claim 6, characterized in that An inclination angle is formed between the straw connecting cavity and the vertical surface, and the inclination angle is 0-45°.

8. A completely valveless suction nozzle according to claim 6, characterized in that The straw connecting cavity is accommodated in the lower part of the suction nozzle body, or the straw connecting cavity extends out of the lower surface of the suction nozzle body.

9. A completely valveless suction nozzle according to claim 6, characterized in that The inner wall of the straw connecting cavity is provided with a concave annular clamping groove, and the outer wall of the upper end of the straw is provided with a convex annular clamping strip.

10. A completely valveless suction nozzle according to claim 1 or 2, characterized in that The nozzle body is further provided with a limiting piece extending in a horizontal plane, and a handle is provided on the lower surface of the limiting piece.

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