Universal water connector structure for liquid heater

Abstract

The universal water receiving head structure comprises a water receiving head and a duckbill valve, the water receiving head comprises a connecting part and an inserting part, an air inlet channel enabling the interior of the connecting part to be communicated with the exterior of the connecting part is arranged at the bottom of the connecting part, and the upper portion of the duckbill valve is inserted into the air inlet channel in a sealed mode. A bearing part used for bearing the duckbill valve is arranged below the connecting part, and an air inlet structure corresponding to an air inlet in the duckbill valve is arranged on the bearing part. According to the technical scheme, the air inlet channel is arranged at the bottom of the connecting part, and the duckbill valve is mounted in the air inlet channel, so that compared with the structure that a ventilation end, a ventilation valve and an end cover are arranged on one side of an existing water receiving head, the outer contour size of the water receiving head can be reduced, a relatively small packaging box can be used for packaging during packaging, and the packaging cost can be reduced; components of the water receiving head are relatively few, the assembly process is simplified, and the production cost is reduced; in addition, a vertical straight-through air inlet structure is adopted, and therefore the air inlet amount and timeliness are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of water connection heads, in particular to a universal water connection head structure for liquid heaters. Background Art

[0002] The function of the water connection head is to serve as a device for transferring external water supply. After connecting it to a mineral water bottle and inserting one end of it into the water connection socket of a water dispenser, it forms a continuous water supply path for the entire water supply circuit. Chinese Patent CN211748904U discloses a water dispenser. Referring to its attached Figure 1 、 2 、4, and 5, it includes a water bottle 1 and a body 2 with a water outlet water path. The bottle mouth end of the water bottle 1 is provided with a water connection head 3. The water connection head 3 is provided with a laterally protruding ventilation end 303. A ventilation hole 301 is provided inside the water connection head 3. One end of the ventilation hole 301 is provided with a ventilation valve 31, and a end cover 32 is provided outside the ventilation valve 31. The outer contour size of this kind of water connection head is relatively large, the packaging volume is relatively large, and the cost is high; an air intake structure needs to be composed of a ventilation end, a ventilation valve, and an end cover, with many components and relatively high manufacturing costs; in addition, only one sealing ring is provided at the lower end of the water connection head. When the water connection head is connected with a water bottle and pulled out from the jack on the water connection seat, after the sealing ring is separated from the jack, when the ejector rod inside the water connection head fails to completely drive the water stop valve to reset under the action of the spring, it cannot play a water stop role, and there will be a short-term water leakage during the moment of pulling out. Content of the Utility Model

[0003] In order to overcome the existing technical defects and solve at least one of the above-mentioned technical problems, the purpose of the present utility model is to provide a universal water connection head structure for liquid heaters to solve the existing technical problems.

[0004] The technical solutions adopted by the present utility model to solve the technical problems are as follows:

[0005] According to one aspect of the present utility model, a universal water connection head structure for liquid heaters is designed, including: a water connection head and a duckbill valve. The water connection head includes a connection part and a plug-in part. An air intake passage for communicating its interior with the exterior is provided at the bottom of the connection part. The upper part of the duckbill valve is hermetically plugged into the air intake passage. A supporting part for supporting the duckbill valve is provided below the connection part, and an air intake structure corresponding to the air intake port on the duckbill valve is provided on the supporting part.

[0006] Adopting the above technical solution, by arranging an air inlet channel at the bottom of the connecting part and installing the duckbill valve in the air inlet channel, compared with the existing structure of arranging a ventilation end, a breathing valve and an end cover on one side of the water connection head, the outer contour size of the water connection head can be reduced, and a relatively small packaging box can be used for packaging during packaging, which can reduce the packaging cost. In addition, the components of this water connection head are relatively few, simplifying the assembly process and reducing the production cost; moreover, adopting a vertical direct air inlet structure, compared with the existing L-shaped air inlet structure, the travel distance of the air inlet channel is reduced, and the opening amplitude of the duckbill valve for reverse air inlet is increased, thereby ensuring the air intake volume and the timeliness of air intake.

[0007] In order to better solve the above technical defects, the present utility model also has a better technical solution:

[0008] In some embodiments, two O-ring grooves are provided on the plugging part, and O-ring seals are respectively sleeved in the two O-ring grooves. By arranging two O-ring seals, a better sealing effect can be achieved, and the problem of instant short-term water leakage during the process of pulling out the water connection head is eliminated.

[0009] In some embodiments, an internal thread and an annular groove are provided in the connecting part, and an annular seal is provided in the annular groove. The annular seal can prevent water leakage at the connection position between the mineral water bottle and the connecting part.

[0010] In some embodiments, a water outlet channel communicating with the inside of the connecting part is provided on the plugging part, a push rod is provided in the water outlet channel, a water stop valve for sealing the water outlet channel is connected to the upper end of the push rod, a spring is sleeved on the push rod, the upper end of the spring abuts against the stepped surface inside the plugging part, and the lower end abuts against the stepped surface at the lower end of the push rod.

[0011] In some embodiments, the air inlet structure is a through hole or a U-shaped notch.

[0012] In some embodiments, the duckbill valve is made of silica gel, and includes a base, a frustum provided on the top of the base, and a duckbill part provided on the frustum. An air inlet gap is provided at the top of the duckbill part. The air inlet channel is a round hole structure, and the frustum is inserted into the air inlet channel and is in sealed contact with the side wall of the air inlet channel.

[0013] In some embodiments, a convex part is provided at the bottom of the connecting part, and the air inlet channel penetrates through the convex part.

[0014] In some embodiments, the outer side of the water stop valve is in a conical structure, and the outer side surface of the water stop valve is in sealed contact with the conical surface at the upper end of the water outlet channel. Description of the Drawings

[0015] Figure 1 Schematic diagram of a liquid heater general water connection head structure provided by an embodiment of the present utility model;

[0016] Figure 2 Schematic diagram of another perspective of the general water connection head structure of a liquid heater;

[0017] Figure 3 Schematic cross-sectional view of the general water connection head structure of a liquid heater;

[0018] Figure 4 Schematic diagram of a duckbill valve;

[0019] Reference numerals:

[0020] 1. Water connection head; 11. Connection part; 111. Air inlet channel; 112. Protrusion; 12. Insertion part; 121. Water outlet channel; 13. Support part; 131. Air inlet structure; 2. Duckbill valve; 21. Base; 22. Frustum; 23. Duckbill part; 3. O-ring seal; 4. Annular seal; 5. Thumb rod; 6. Water stop valve; 7. Spring. Detailed implementation manners

[0021] To make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the detailed implementation manners and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present utility model. In addition, in the following descriptions, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0022] In the description of the present utility model, it should be understood that for the orientation descriptions, such as upper, lower, front, rear, left, right, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0023] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installation, connection, and fixed connection should be understood in a broad sense. Those skilled in the technical field can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0024] Reference Figures 1 to 4As shown in the figure, a general water connection head structure for a liquid heater provided by the utility model includes: a water connection head 1 and a duckbill valve 2. The water connection head 1 includes a connection part 11 and a plug-in part 12. An air inlet channel 111 for communicating the inside and the outside is provided at the bottom of the connection part 11. Among them, a convex part 112 is provided at the bottom of the connection part 11, and the air inlet channel 111 penetrates through the convex part 112. The upper part of the duckbill valve 2 is hermetically plugged into the air inlet channel 111. A supporting part 13 is provided below the connection part 11. The supporting part 13 is used to support the duckbill valve 2. The supporting part 13 is connected to the plug-in part 12. The supporting part 13 is in a plate-like structure in the shape of a circle, a semicircle or a quarter circle. An air inlet structure 131 corresponding to the air inlet of the duckbill valve 2 is provided on the supporting part 13. The air inlet structure 131 is a through hole or a U-shaped notch.

[0025] Further, the duckbill valve 2 is made of silica gel. The duckbill valve 2 includes a base 21, a frustum 22 provided on the top of the base 21, and a duckbill part 23 provided on the frustum 22. An air inlet gap is provided at the top of the duckbill part 23. The air inlet channel 111 can be a circular hole, a rectangular hole, a hexagonal hole, etc. In this embodiment, the air inlet channel 111 is preferably a circular hole. The frustum 22 is plugged into the air inlet channel 111 and is in sealing contact with the side wall of the air inlet channel 111.

[0026] Two O-ring grooves are provided on the plug-in part 12. One O-ring groove is located in the middle of the plug-in part 12, and the other is located in the lower part of the plug-in part 12. O-ring seals 3 are respectively sleeved in the two O-ring grooves.

[0027] Internal threads and an annular groove are provided in the connection part 11, and an annular seal 4 is provided in the annular groove.

[0028] A water outlet channel 121 communicating with the inside of the connection part 11 is provided on the plug-in part 12. A push rod 5 is provided in the water outlet channel 121. A water stop valve 6 for sealing the upper part of the water outlet channel 121 is connected to the upper end of the push rod 5. Among them, the water stop valve 6 is made of silica gel and is sleeved in the annular groove at the upper end of the push rod 5. A spring 7 is sleeved on the push rod 5. The upper end of the spring 7 abuts against the step surface in the plug-in part 12, and the lower end abuts against the step surface at the lower end of the push rod 5. The outer side of the water stop valve 6 is in a conical structure, and the outer side surface of the water stop valve 6 is in sealing contact with the conical surface at the upper end of the water outlet channel 121.

[0029] When the connection part 11 is connected to a mineral water bottle and the plug-in part 12 is inserted into the jack of the water receiving seat on the water dispenser, the abutting part in the water receiving seat will abut against the push rod 5 to move upward, the spring 7 is compressed, and the water outlet channel 121 is opened. When the pump body in the water dispenser pumps water from the mineral water bottle, the internal pressure of the mineral water bottle decreases, which forces the air inlet gap at the top of the duckbill valve 2 to open, allowing external air to enter the mineral water bottle to balance the internal pressure.

[0030] The above are only some embodiments of the present utility model. For those of ordinary skill in the art, without departing from the creative concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model.

Claims

1. A universal water connection head structure for a liquid heater, characterized in that: include: A water inlet and a duckbill valve, the water inlet comprising a connecting portion and a plug-in portion, the connecting portion having an air inlet duct at the bottom thereof communicating the inside with the outside, the duckbill valve having an upper sealing portion plugged into the air inlet duct, a supporting portion for supporting the duckbill valve being provided below the connecting portion, the supporting portion being provided with an air inlet structure corresponding to the air inlet on the duckbill valve.

2. A universal water connection head structure for a liquid heater according to claim 1, characterized in that: The plug-in portion is provided with two O-shaped grooves, and O-shaped sealing rings are respectively sleeved in the two O-shaped grooves.

3. A universal water connection head structure for a liquid heater according to claim 1 or 2, characterized in that: An internal thread and an annular groove are arranged in the connecting portion, and an annular sealing ring is arranged in the annular groove.

4. A universal water connection head structure for a liquid heater according to claim 1, characterized in that: The plug-in part is provided with a water outlet channel connected with the interior of the connecting part, and a push rod is provided in the water outlet channel. The upper end of the push rod is connected with a water stop valve for sealing the water outlet channel. A spring is sleeved on the push rod, and the upper end of the spring abuts against the step surface in the plug-in part, and the lower end abuts against the step surface at the lower end of the push rod.

5. The universal water connection head structure for a liquid heater according to claim 1, characterized in that: The air intake structure is a through hole or a U-shaped notch.

6. A universal water connection head structure for a liquid heater according to claim 1, characterized in that: The duckbill valve is made of silicone, and includes a base, a frustum arranged on the top of the base, and a duckbill portion arranged on the frustum. The top of the duckbill portion has an air intake gap. The air intake duct is a circular hole structure. The frustum is inserted into the air intake duct and is sealed against the side wall of the air intake duct.

7. A universal water connection head structure for a liquid heater according to claim 1, characterized in that: A bulge is provided at the bottom of the connecting portion, and the air inlet passes through the bulge.

8. A universal water connection head structure for a liquid heater according to claim 4, characterized in that: The outer side of the water stop valve is in a conical structure, and the outer side surface of the water stop valve is in sealing contact with the conical surface at the upper end of the water outlet channel.

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