Steam type milk bar

Abstract

The utility model relates to a steam type milk bar which comprises a nozzle body which is in a hollow tube shape, and the upper end of the outer side of the nozzle body extends to form a circle of step portion. The sleeve is in a hollow pipe shape and sleeves the outer side of the nozzle body, the upper end of the inner side is in threaded connection with the outer side of the step part, and the sleeve can rotate around the axial direction of the nozzle body and generate threaded displacement in the axial direction of the nozzle body; first through holes are formed in the side surfaces of the sleeves; the inner side of the sleeve and the outer side of the nozzle body are spaced to form a first cavity, and a second cavity is formed in the inner side of the sleeve and located at the lower end of the nozzle body and communicates with the first cavity and the nozzle body. When the sleeve is rotated to the first position, the first through hole is completely covered by the outer side of the step part, the first through hole is disconnected from the first cavity, and milk is heated only through steam when the first through hole is disconnected from the first cavity. When the sleeve is rotated to the second position, the first through hole is at least partially communicated with the first cavity, air enters the first cavity from the first through hole, air, steam and milk are mixed in the second cavity during communication, foam is generated in the milk, the structure is simple, and installation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of milk stick technology, and in particular to a steam-type milk stick. Background Technology

[0002] Steam-powered milk wands are typically installed at the interface of the steam generator in coffee or beverage machines. They generally include a nozzle body, a sleeve fixedly fitted around the outside of the nozzle body, and an adjustment device fitted around the outside of the sleeve. An air passage is formed between the sleeve and the nozzle body, with an air inlet in the thicker part of the sleeve wall communicating with the air passage. In use, steam enters the nozzle body and is sprayed onto the milk. The adjustment device moves between an open and closed position relative to the sleeve, thus covering or opening the air inlet. When the air inlet is open, air enters the air passage through the inlet and mixes with the steam and milk, creating milk foam. When the air inlet is covered by the adjustment device, air does not enter the air passage; only the steam heats the milk.

[0003] The above-mentioned steam-type milk stick technical solution requires three components to be nested together in sequence, and the outermost adjustment device must be made of elastic material with a specific structure. In addition, there are certain requirements for the friction between the adjustment device and the sleeve in order to make the adjustment device stably open or close the air inlet. This makes the design and production costs high.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model discloses a steam-type milk stick to solve the problems of complex structure and high design and production costs associated with steam-type milk sticks.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A steam-type milk stick, comprising: a nozzle body, which is hollow and tubular, with a stepped portion extending from its upper outer end; a sleeve, which is also hollow and tubular, fitted onto the outside of the nozzle body, with its upper inner end threadedly connected to the outer side of the stepped portion; the sleeve is rotatable around the axial direction of the nozzle body and capable of threaded displacement along the axial direction of the nozzle body; a first through hole is formed on the side of the sleeve; a first cavity is formed between the inner side of the sleeve and the outer side of the nozzle body; a second cavity is formed at the lower end of the nozzle body on the inner side of the sleeve; the second cavity connects the first cavity and the nozzle body; wherein, when the sleeve is rotated to a first position, the first through hole is completely covered by the outer side of the stepped portion, and the first through hole is disconnected from the first cavity; when the sleeve is rotated to a second position, the first through hole at least partially connects to the first cavity.

[0008] A further technical solution is that an annular groove is formed on the outer side of the upper end of the stepped portion, and a first extension is provided on the upper end of the inner side of the sleeve, with the first extension being threadedly connected to the annular groove.

[0009] A further technical solution is that a cover plate is provided at the upper end of the stepped portion, and the outer diameter of the cover plate is larger than the inner diameter of the first extension portion.

[0010] A further technical solution is that the steam-type milk stick also includes a screw, which passes through the cover plate and is threadedly connected to the stepped portion.

[0011] A further technical solution is that a connecting pipe is threaded to the upper end of the nozzle body, and the connecting pipe passes through the cover plate.

[0012] A further technical solution is that the nozzle body includes: a tube section, threadedly connected to the lower end of the connecting tube; and a nozzle section, threadedly connected to the lower end of the tube section.

[0013] A further technical solution is that a second extension extends from the lower inner end of the sleeve, and the second extension is sleeved on the outer side of the nozzle body; a second through hole is opened on the second extension, and the second through hole connects the first cavity and the second cavity.

[0014] A further technical solution is that the steam-type milk stick includes: two sealing rings, which are snapped onto the outside of the nozzle body, one of which is located at the upper end of the first through hole, and the other of which is located at the second extension.

[0015] A further technical solution is that the first through hole is an inverted cone shape.

[0016] A further technical solution is that a cover is provided on the outside of the sleeve, and a third through hole is opened on the inner side of the lower end of the cover, and the third through hole is connected to the first through hole.

[0017] The beneficial effects of this utility model embodiment are as follows:

[0018] (I) The steam-type milk stick of this utility model, by sleeved on the outside of the nozzle body, with the upper inner end threadedly connected to the outer side of the stepped portion, allows the sleeve to rotate around the axial direction of the nozzle body and generate threaded displacement along the axial direction of the nozzle body. When the sleeve is rotated to the first position, the first through hole is completely covered by the outer side of the stepped portion, disconnecting the first through hole from the first cavity. When disconnected, no air impacts the milk with the steam to generate milk foam, achieving heating of the milk only by steam. When the sleeve is rotated to the second position, the first through hole at least partially connects to the first cavity, and steam is injected from the nozzle body into the second cavity, generating negative pressure that drives air from the first through hole into both the first and second cavities. When connected, air, steam, and milk mix in the second cavity, generating foam in the milk. The structure is simple, and installation and operation are convenient.

[0019] (ii) Furthermore, by connecting the first extension on the inner side of the sleeve to the annular groove thread on the outer side of the step, the lower limit of the sleeve rotation is restricted. By providing a cover plate on the step, the outer diameter of the cover plate is larger than the inner diameter of the first extension, thus restricting the upper limit of the sleeve rotation, which is convenient for the operator to use.

[0020] (iii) Furthermore, since the sleeve is fitted onto the nozzle body and the cover plate is screwed onto the step, disassembly is only required by first pinching the cover plate and rotating it to remove the nozzle body and sleeve from the connecting pipe, then removing the cover plate, and finally rotating the sleeve off the nozzle body. This makes installation and disassembly convenient. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the internal structure of the sleeve in the first position of the steam-type milk stick of this utility model.

[0022] Figure 2 This is a schematic diagram of the internal structure of the steam-type milk stick of this utility model when the sleeve is in the second position.

[0023] Figure 3 This is a schematic diagram of the internal structure of the sleeve in the first position of the steam-type milk stick of this utility model.

[0024] In the picture:

[0025] 1. Nozzle body; 11. Tube section; 111. Stepped section; 1111. Annular groove; 12. Nose section; 13. Cover plate; 131. Screw; 14. Sealing ring; 2. Sleeve; 21. First through hole; 22. First extension; 23. Second extension; 231. Second through hole; 24. Cover body; 241. Third through hole; 201. First cavity; 202. Second cavity; 3. Connecting pipe. Detailed Implementation

[0026] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the device proposed by this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this utility model will become clearer according to the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, only used to conveniently and clearly assist in illustrating the purpose of the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only used to complement the content disclosed in the specification, for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0028] First embodiment:

[0029] This embodiment discloses a steam-type milk stick.

[0030] like Figure 1 and Figure 2 As shown, the steam-type milk stick includes a nozzle body 1 and a sleeve 2.

[0031] The nozzle body 1 is a hollow tube with a stepped section 111 extending from the upper outer side. Specifically, the nozzle body 1 is a circular tube with a nozzle at the lower end.

[0032] The sleeve 2 is a hollow tubular shape, fitted onto the outside of the nozzle body 1. Its upper inner end is threadedly connected to the outer side of the stepped portion 111. The sleeve 2 can rotate around the axial direction of the nozzle body 1 and generate threaded displacement along the axial direction of the nozzle body 1. A first through hole 21 is formed on the side of the sleeve 2. A first cavity 201 is formed between the inner side of the sleeve 2 and the outer side of the nozzle body 1. A second cavity 202 is located at the lower end of the nozzle body 1 on the inner side of the sleeve 2, and the second cavity 202 connects the first cavity 201 and the nozzle body 1. Figure 1 As shown, when the sleeve 2 is rotated to the first position, the first through hole 21 is completely covered by the outer side of the stepped portion 111, and the first through hole 21 is disconnected from the first cavity 201. Figure 2 As shown, when the sleeve 2 is rotated to the second position, the first through hole 21 is at least partially connected to the first cavity 201.

[0033] For example, a second extension 23 extends from the lower inner end of the sleeve 2, and the second extension 23 is fitted onto the outer side of the nozzle body 1. A second through hole 231 is formed on the second extension 23, connecting the first cavity 201 and the second cavity 202. Both the upper and lower ends of the sleeve 2 are fitted onto the outer side of the nozzle body 1, improving the stability of the milk stick during use. Figure 3As shown, preferably, the first through hole 21 is an inverted cone shape. Since the width of the inverted cone through hole varies greatly, the air intake adjustment is more obvious when the first through hole 21 is connected to the first cavity 201.

[0034] like Figure 1 and Figure 2 As shown, the nozzle body 1 is further connected to a connecting tube 3 by a thread at its upper end. The nozzle body 1 includes a tube portion 11 and a nozzle portion 12. The tube portion 11 is threaded to the lower end of the connecting tube 3, and the nozzle portion 12 is threaded to the lower end of the tube portion 11. A stepped portion 111 is provided on the upper outer side of the tube portion 11. The various components of the nozzle body 1 can be disassembled and replaced, especially the nozzle portion 12, which is in long-term contact with milk, reducing replacement costs.

[0035] like Figure 1 and Figure 2 As shown, the steam-type milk stick further includes a sealing ring 14. There are two sealing rings 14, which are snapped onto the outside of the nozzle body 1. One sealing ring 14 is located at the upper end of the first through hole 21, and the other sealing ring 14 is located at the second extension 23. The sealing rings 14 make the sleeve 2 and the nozzle body 1 in a sealed contact, ensuring that no air will seep in from between the nozzle body 1 and the sleeve 2 when heating only the milk, and that no dense foam will be generated in the milk, thereby improving the sealing performance of the steam-type milk stick.

[0036] like Figure 1 and Figure 2 As shown, a cover 24 is further provided on the outside of the sleeve 2. A third through hole 241 is opened on the inner side of the lower end of the cover 24. The third through hole 241 is connected to the first through hole 21. Since the opening of the third through hole 241 faces downward, it reduces the entry of external dust into the milk stick and ensures the quality of the milk.

[0037] In this embodiment, by sleeve 2 being fitted onto the outside of nozzle body 1, with its upper inner end threadedly connected to the outside of step portion 111, sleeve 2 can rotate around the axial direction of nozzle body 1 and generate threaded displacement along the axial direction of nozzle body 1. When sleeve 2 is rotated to the first position, the first through hole 21 is completely covered by the outside of step portion 111, disconnecting the first through hole 21 from the first cavity 201. When disconnected, no air impacts the milk with steam to generate milk foam, achieving heating of the milk only by steam. When sleeve 2 is rotated to the second position, the first through hole 21 at least partially connects to the first cavity 201. Steam is injected from nozzle body 1 into the second cavity 202, generating negative pressure that drives air from the first through hole 21 into both the first and second cavities 201 and 202. When connected, air, steam, and milk mix within the second cavity 202, generating foam in the milk. The structure is simple, and installation and operation are convenient.

[0038] Second embodiment:

[0039] Based on the first embodiment, the second embodiment further optimizes and refines the nozzle body 1 and the sleeve 2.

[0040] A ring groove 1111 is formed on the outer side of the upper end of the stepped portion 111, and a first extension portion 22 is provided on the upper side of the inner side of the sleeve 2. The first extension portion 22 is threadedly connected to the ring groove 1111.

[0041] Furthermore, a cover plate 13 is provided at the upper end of the stepped portion 111, and the outer diameter of the cover plate 13 is larger than the inner diameter of the first extension portion 22. For example, the steam-type milk stick also includes a screw 131, which passes through the cover plate 13 and is threadedly connected to the stepped portion 111. Of course, in other embodiments of this utility model, the cover plate 13 can also be fastened to the stepped portion 111, as long as it satisfies the requirement that the cover plate 13 and the stepped portion 111 can be installed and fixed and are easy to disassemble; this utility model does not impose further limitations in this regard.

[0042] Furthermore, a connecting pipe 3 is threaded onto the upper end of the nozzle body 1, and the connecting pipe 3 passes through the cover plate 13. The other end of the connecting pipe 3 is connected to the steam interface of the coffee machine, and steam is input to the milk wand through the connecting pipe 3.

[0043] In this embodiment, by threading the first extension 22 on the inner side of the sleeve 2 to the annular groove 1111 on the outer side of the step 111, the lower limit of the rotation of the sleeve 2 is restricted. By providing a cover plate 13 on the step 111, the outer diameter of the cover plate 13 is larger than the inner diameter of the first extension 22, thus restricting the upper limit of the rotation of the sleeve 2, which is convenient for the operator to use.

[0044] Meanwhile, since the sleeve 2 is fitted outside the nozzle body 1 and the cover plate 13 is screwed onto the step 111, disassembly is easy. Simply pinch the cover plate 13 and rotate it to remove the nozzle body 1 and sleeve 2 from the connecting pipe 3, then remove the cover plate 13, and finally rotate the sleeve 2 off the nozzle body 1. Installation and disassembly are convenient.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A steam-type milk stick, characterized in that, The steam-type milk stick includes: The nozzle body is a hollow tube with a stepped section extending from the upper outer side; A sleeve, which is a hollow tube, is fitted onto the outside of the nozzle body. The upper end of the inner side is threadedly connected to the outer side of the stepped portion. The sleeve can rotate around the axial direction of the nozzle body and generate threaded displacement along the axial direction of the nozzle body. A first through hole is opened on the side of the sleeve. A first cavity is formed between the inner side of the sleeve and the outer side of the nozzle body. A second cavity is located at the lower end of the nozzle body on the inner side of the sleeve. The second cavity connects the first cavity and the nozzle body. When the sleeve is rotated to the first position, the first through hole is completely covered by the outer side of the stepped portion, and the first through hole is disconnected from the first cavity; when the sleeve is rotated to the second position, the first through hole is at least partially connected to the first cavity.

2. The steam-type milk stick according to claim 1, characterized in that: A ring groove is formed on the outer side of the upper end of the stepped portion, and a first extension is provided on the upper end of the inner side of the sleeve, with the first extension threadedly connected to the ring groove.

3. The steam-type milk stick according to claim 2, characterized in that: A cover plate is provided at the upper end of the stepped portion, and the outer diameter of the cover plate is larger than the inner diameter of the first extension portion.

4. The steam-type milk stick according to claim 3, characterized in that: The steam-type milk stick also includes a screw that passes through the cover plate and is threaded into the stepped portion.

5. The steam-type milk stick according to claim 3, characterized in that: The nozzle body is threadedly connected to a connecting pipe at its upper end, and the connecting pipe passes through the cover plate.

6. The steam-type milk stick according to claim 5, characterized in that, The nozzle body includes: a tube portion threadedly connected to the lower end of the connecting tube; and a nozzle portion threadedly connected to the lower end of the tube portion.

7. The steam-type milk stick according to claim 1, characterized in that: A second extension extends from the lower inner end of the sleeve and is fitted onto the outer side of the nozzle body; a second through hole is formed on the second extension and the second through hole connects the first cavity and the second cavity.

8. The steam-type milk stick according to claim 7, characterized in that, The steam-type milk stick includes two sealing rings, which are engaged on the outside of the nozzle body. One of the sealing rings is positioned at the upper end of the first through hole, and the other sealing ring is positioned at the second extension.

9. The steam-type milk stick according to claim 1, characterized in that: The first through hole is inverted conical in shape.

10. The steam-type milk stick according to claim 1, characterized in that: A cover is also provided on the outside of the sleeve, and a third through hole is opened on the inner side of the lower end of the cover, which is connected to the first through hole.

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