Suction nozzle capable of preventing water leakage through air return

Abstract

The utility model relates to the technical field of daily utensils, in particular to a suction nozzle capable of preventing water leakage through air return. A suction nozzle capable of preventing water leakage through air return comprises a suction nozzle body, a water outlet channel is formed in the suction nozzle body, and the water outlet channel upwards extends out of the upper portion of the suction nozzle body to form a suction part; the air return mechanism is arranged on the suction nozzle body and located on the side of the sucking part, and comprises a first air return channel and an air return structure arranged in the first air return channel; the first air return channel penetrates through the upper end face and the lower end face of the suction nozzle body, and a blocking piece protruding towards the interior of the first air return channel is arranged at the upper opening edge of the first air return channel. According to the utility model, through the combined action of the separation blade and the inner pit, water drops or water flows back from the hole formed in the first air return channel when the water cup falls down can be well prevented from flowing into the second air return channel, and the water drops or the water flows form return waves at the inner pit after being blocked at the separation blade and are gathered in the inner pit.

Description

Technical Field

[0001] The utility model relates to the technical field of daily utensils, in particular to an air return and water leakage-proof suction nozzle. 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 return air leakage-proof nozzle which can effectively block the backflow of water droplets and water flow in the return air channel and the return air channel will not be blocked during assembly. To solve the above technical problems, the utility model provides the following technical solutions:

[0005] A suction nozzle for returning air and preventing water leakage, the suction nozzle comprising:

[0006] A nozzle body, wherein the nozzle body is provided with a water outlet channel, and the water outlet channel extends upward from the upper part of the nozzle body to form a sucking portion;

[0007] The air return mechanism is arranged on the nozzle body and located on the side of the sucking part, and includes a first air return channel and an air return structure arranged in the first air return channel;

[0008] The first air return channel runs through the upper and lower end surfaces of the nozzle body, and a blocking piece protruding into the first air return channel is provided at the upper edge of the first air return channel.

[0009] The shape and length of the baffle can be changed and set according to actual needs, as long as its function is achieved.

[0010] On the basis of adopting the above technical solution, the utility model can also adopt the following further technical solution:

[0011] The channel wall of the first air return channel is provided with an inner pit sunken into the channel wall, and the inner pit is located between the baffle and the air return structure.

[0012] The nozzle body is also provided with a groove, the starting end of the groove is connected with the upper edge of the first return air channel, and the tail end of the groove is exposed to the outer surface of the nozzle body, and the groove forms a second return air channel on the nozzle body that is connected with the first return air channel.

[0013] A notch is provided at the upper edge of the first air return channel to form the starting end of the second air return channel, and the outer wall of the suction portion is provided with a second annular retaining ring protruding outward, and the tail end of the second air return channel is provided below the second annular retaining ring, and a notch is formed at the side wall of the second annular retaining ring. The formation of the notch enables the tail end of the second air return channel to still be connected to the outside air when the suction nozzle is assembled on the water cup, thereby ensuring the conduction of the second air return channel with the outside.

[0014] The upper edge of the first air return channel is provided with a first annular retaining ring protruding upward, and the first annular retaining ring also has a notch, and the notch of the first annular retaining ring and the notch of the upper edge of the first air return channel together form the starting end of the second air return channel. The notch of the upper edge of the first air return channel is smaller than the notch of the first annular retaining ring, that is, a small notch is formed on the upper edge of the first air return channel.

[0015] The air return mechanism is arranged at the rear side of the sucking part, and the second air return channel is the shortest path between the notch of the upper edge of the first air return channel and the second annular retaining ring.

[0016] The connection between the baffle and the channel wall of the first air return channel is a first arc portion, the opening formed by the notch and the channel wall of the first air return channel is a second arc portion, and the arc length of the first arc portion is not less than the arc length of the second arc portion.

[0017] The air return structure divides the first 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 diameter 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.

[0018] 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 peripheral sunken water tank can ensure that in the normal drinking scene, the water will not cover the air return hole, but enter the water tank first, preventing the problem of the air return hole being blocked by water and unable to absorb water. The air return structure has at least two holes. The holes can be of various forms and shapes, as long as they have the function of opening the holes.

[0019] 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, the diameter of the small hole is smaller than the diameter of the large hole, and the air return structure includes an annular inclined surface inclined from top to bottom toward the center, and a circular horizontal surface of the runway, and the large hole and the small hole are both opened on the horizontal surface. 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.

[0020] The upper end and the lower end of the water outlet channel are bent at an obtuse angle to form a bending portion. The lower end of the water outlet channel is a straw connecting cavity, and a straw is clamped in the straw connecting cavity. An inclination angle is formed between the straw connecting cavity and the vertical plane, and the angle of the inclination angle is 0-45°.

[0021] The straw connecting cavity is accommodated in the lower part of the nozzle body, or the straw connecting cavity extends out of the lower surface of the nozzle body, and the inner wall of the straw connecting cavity is provided with a concave annular clamping groove.

[0022] 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.

[0023] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0024] The utility model, through the combined effect of the baffle and the inner pit, can effectively prevent water droplets or water flow that flow back out of the hole opened in the first air return channel from flowing into the second air return channel when the water cup is tipped over when the suction nozzle is in use, that is, when the suction nozzle is assembled in the water cup for drinking. After the water droplets or water flow are blocked at the baffle, they form back waves at the inner pit and converge in the inner pit, so as to comprehensively prevent the problem of air return obstruction caused by water flowing into the second air return channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The utility model is a schematic diagram of the upper structure of an air return and water leakage-proof suction nozzle.

[0026] Figure 2 The utility model is a schematic diagram of the lower structure of an air return and water leakage prevention suction nozzle.

[0027] Figure 3 It is a rear view of an air return and water leakage-proof suction nozzle of the utility model.

[0028] Figure 4 The utility model is a suction nozzle for returning air and preventing water leakage Figure 3 Sectional view at the center A axis.

[0029] Figure 5 The utility model is a schematic diagram of the upper structure of a second embodiment of an air return and water leakage prevention suction nozzle.

[0030] Among them, the nozzle body 1, the water outlet channel 2, the sucking part 21, the second annular retaining ring 22, the notch 23, the bending part 24, the straw connecting cavity 25, the first return air channel 3, the retaining plate 31, the inner pit 32, the first annular retaining ring 33, the notch 34, the upper return air channel 35, the lower return air channel 36, the small notch 37, the groove 4, the return air structure 5, the hole 51, the annular inclined surface 52, the horizontal surface 53, and the water tank 6. DETAILED DESCRIPTION

[0031] In conjunction with the accompanying drawings, the air return and water leakage-proof suction nozzle provided by the utility model is further described.

[0032] Embodiment 1, as Figure 1-4 As shown, an air return and water leakage proof suction nozzle comprises a suction nozzle body 1 , on which a water outlet channel 2 is opened. The water outlet channel 2 extends upward from the upper part of the suction nozzle body 1 to form a sucking portion 21 .

[0033] Furthermore, the nozzle body 1 is provided with an air return mechanism, which is located on the back side of the sucking portion 21 . The air return mechanism includes a first air return channel 3 and an air return structure 5 provided in the first air return channel 3 .

[0034] Furthermore, the first air return channel 3 runs through the upper and lower end surfaces of the nozzle body 1 , and a blocking piece 31 protruding into the first air return channel 3 is provided at the upper edge of the first air return channel 3 .

[0035] Furthermore, the channel wall of the first air return channel 3 is provided with an inner pit 32 recessed into the channel wall, and the inner pit 32 is located between the baffle 31 and the air return structure.

[0036] Furthermore, a groove 4 is provided on the nozzle body 1, and the starting end of the groove 4 is connected with the upper edge of the first air return channel 3, and the tail end of the groove 4 is exposed to the outer surface of the nozzle body 1. Therefore, the groove 4 forms a second air return channel on the nozzle body 1 that is connected with the first air return channel 3, that is, the second air return channel is the groove 4 enabled from the functional level, and the first air return channel 3 and the second air return channel together constitute a complete air return channel.

[0037] Furthermore, a first annular retaining ring 33 protruding upward is provided at the upper edge of the first air return channel 3 , and a notch 34 is formed in the first annular retaining ring 33 to form a starting end of the second air return channel.

[0038] Furthermore, the outer side wall of the sucking portion 21 is provided with a second annular retaining ring 22 protruding outward, the tail end of the second air return channel is opened below the second annular retaining ring 22, and a notch 23 is formed at the side wall of the second annular retaining ring 22. The formation of the notch 23 enables the tail end of the second air return channel to still be connected to the outside air when the suction nozzle is assembled on the water cup, thereby ensuring the conduction of the second air return channel with the outside.

[0039] Furthermore, the second air return channel is the shortest path between the first annular retaining ring 33 and the second annular retaining ring 22 , which means that the second air return channel is arranged on the back side of the suction part.

[0040] Furthermore, the connection between the baffle 31 and the channel wall of the first return air channel 3 is a first arc-shaped portion, and the opening formed by the notch 34 and the channel wall of the first return air channel 3 is a second arc-shaped portion. The arc length of the first arc-shaped portion is not less than the arc length of the second arc-shaped portion, which means that the two ends of the baffle 31 are at least not shorter than the two ends of the notch 34, so as to ensure that water droplets or water flow will not flow into the second return air channel from the two ends of the baffle 31.

[0041] Furthermore, the air return structure 5 divides the first air return channel 3 into an upper air return channel 35 and a lower air return channel 36 , and the air return structure 5 is an inverted trapezoidal structure so that the caliber of the lower part of the upper air return channel 35 gradually decreases from top to bottom.

[0042] Furthermore, the air return structure 5 is provided with at least one hole 51 , and a water tank 6 is formed between the channel wall of the lower air return channel 35 and the air return structure 5 .

[0043] Furthermore, the hole 51 may be a large hole with a diameter of 0-1.5 mm, or a small hole with a diameter of 0-1.2 mm, or a combination of large holes and small holes. The number and arrangement of the large holes and small holes may be set according to actual conditions.

[0044] Furthermore, the air return structure 5 includes an annular inclined surface 52 inclined from top to bottom toward the center, and a runway circular horizontal surface 53, and the hole 51 is opened on the horizontal surface.

[0045] Furthermore, the upper and lower ends of the water outlet channel 2 are bent at an obtuse angle to form a bending portion 24, and the lower end of the water outlet channel 2 is a straw connecting cavity 25, and the straw connecting cavity 25 is clamped with a straw, and an inclination angle is formed between the straw connecting cavity 25 and the vertical plane, and the angle of the inclination angle is 0-45°.

[0046] Furthermore, the straw connection cavity 25 is accommodated in the lower part of the nozzle body 1, and the straw connection cavity 25 can also be arranged to extend out of the lower surface of the nozzle body 1. When the straw is inserted into the straw connection cavity 25, a concave annular clamping groove can be opened on the inner wall of the straw connection cavity 25, and a convex ring for fixing with the annular clamping groove is arranged on the outer side of the upper end of the straw to be connected, so as to facilitate the assembly of the straw into the straw connection cavity 25.

[0047] Furthermore, the water outlet at the upper end of the nozzle body 1 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 the water column is an elliptical cross-section water column, which then impacts the throat and causes choking when drinking water.

[0048] Embodiment 2, as Figure 5 As shown, the upper edge of the first air return channel 3 is not provided with a first annular retaining ring 33 protruding upward, that is, a small notch 37 is directly opened at the upper edge of the first air return channel 3, and this small notch 37 directly forms the starting end of the second air return channel.

[0049] At this time, the upper surface of the entire nozzle body 1 is a continuous arc surface, the surface is more fluid and smooth, and can be adapted to more types of covers. The rest is the same as the first embodiment.

[0050] 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 suction nozzle with air return and water leakage prevention, characterized in that The nozzle comprises: A nozzle body, wherein the nozzle body is provided with a water outlet channel, and the water outlet channel extends upward from the upper part of the nozzle body to form a sucking portion; The air return mechanism is arranged on the nozzle body and located on the side of the sucking part, and includes a first air return channel and an air return structure arranged in the first air return channel; The first air return channel runs through the upper and lower end surfaces of the nozzle body, and a blocking piece protruding into the first air return channel is provided at the upper edge of the first air return channel.

2. The air return and water leakage prevention nozzle according to claim 1, characterized in that The channel wall of the first air return channel is provided with an inner pit sunken into the channel wall, and the inner pit is located between the baffle and the air return structure.

3. The air return and water leakage prevention nozzle according to claim 1, characterized in that The nozzle body is also provided with a groove, the starting end of the groove is connected with the upper edge of the first return air channel, and the tail end of the groove is exposed to the outer surface of the nozzle body, and the groove forms a second return air channel on the nozzle body that is connected with the first return air channel.

4. The air return and water leakage prevention nozzle according to claim 3, characterized in that A notch is provided at the upper edge of the first air return channel to form the starting end of the second air return channel, and the outer wall of the suction portion is provided with a second annular retaining ring protruding outward, and the tail end of the second air return channel is provided below the second annular retaining ring, and a notch is formed at the side wall of the second annular retaining ring.

5. The air return and water leakage proof nozzle according to claim 4, characterized in that The air return mechanism is arranged at the rear side of the sucking part, and the second air return channel is the shortest path between the notch of the upper edge of the first air return channel and the second annular retaining ring.

6. The air return and water leakage prevention nozzle according to claim 4, characterized in that The connection between the baffle and the channel wall of the first air return channel is a first arc portion, the opening formed by the notch and the channel wall of the first air return channel is a second arc portion, and the arc length of the first arc portion is not less than the arc length of the second arc portion.

7. The air return and water leakage prevention nozzle according to claim 1, characterized in that The air return structure divides the first 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 diameter 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.

8. The air return and water leakage proof nozzle according to claim 7, characterized in that The hole is a large hole, or the hole is a small hole, or the hole is 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 air return structure includes an annular inclined surface inclined from top to bottom toward the center, and a runway circular horizontal surface. The large hole and the small hole are both opened on the horizontal surface.

9. The air return and water leakage prevention nozzle according to claim 7, 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. The lower end of the water outlet channel is a straw connecting cavity, and a straw is clamped in the straw connecting cavity. An inclination angle is formed between the straw connecting cavity and the vertical plane, and the angle of the inclination angle is 0-45°.

10. The air return and water leakage proof suction nozzle according to claim 9, characterized in that The straw connecting cavity is accommodated in the lower part of the nozzle body, or the straw connecting cavity extends out of the lower surface of the nozzle body, and the inner wall of the straw connecting cavity is provided with a concave annular clamping groove.

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