Milk box foaming structure

Abstract

The utility model relates to the technical field of coffee making equipment, in particular to a milk box foaming structure. The device comprises a main body and a switching assembly, the main body is provided with a steam connector, a milk outlet pipe, a milk inlet pipe, a mixing air channel and an air inlet channel, the switching assembly comprises a base and a rotary valve, the base is communicated with the air inlet channel, the rotary valve comprises a rotary knob and a rotary shaft, the rotary shaft is inserted into the base and provided with a vent groove, and the tail end of the vent groove is provided with an air inlet. An air passing channel is arranged in the tail end body of the rotating shaft, a sealing sleeve is sleeved on the outer surface of the rotating shaft provided with the vent groove, the sealing sleeve extends to the air inlet and wraps the air inlet, and the head end of the vent groove is communicated with the outside. According to the switching assembly, the vent groove is used for air inflow, external air can better enter a product through the vent groove, the quality of milk foam needing to be beaten through the air is further improved, and due to the fact that a groove body of the vent groove is thin and air needs to be sucked from a gap between the rotary knob and the assembling shell, the milk foam can be better stirred. A part of dust can be prevented from entering the knob when air enters the knob, and pollutants are prevented from entering the main body.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee brewing equipment, in particular to a milk box foaming structure. Background Art

[0002] With the improvement of people's living standards, coffee has become one of the indispensable drinks in life, especially Italian coffee with whipped milk. The addition of whipped milk in different proportions can make different varieties of Italian coffee. At present, the existing milk whipping device is equipped with an air intake plate for air intake, and the air intake plate is generally installed inside the foamer, and multiple sealing structures are required to complete the sealing of the air intake channel. Often, a poor seal at a certain point will affect the foaming effect. And because the air intake plate is in the internal structure of the foamer, it is not easy to clean the air intake plate if milk is stained with the air intake plate, which may cause the residual milk to stink due to not being cleaned; and the agglomerated milk will block the air vents of the air intake plate, resulting in unstable foaming effect during use, affecting the user experience. Utility Model Content

[0003] The utility model aims to provide a milk box foaming structure with a detachable switching assembly for cleaning.

[0004] The above purpose is achieved in this way.

[0005] A milk box foaming structure comprises a main body and a switching component, the main body is provided with a steam joint, a milk outlet pipe and a milk inlet pipe, the main body is provided with a mixing air passage, one end of the main body is connected to the air inlet passage, the switching component comprises a base and a rotary valve, the base and the air inlet passage are sealed and connected, the rotary valve comprises a knob and a rotating shaft, the rotating shaft is inserted into the base body, a ventilation groove is provided on the surface of the rotating shaft, an air inlet is provided at the end of the ventilation groove, an air outlet is provided at the end end surface of the rotating shaft is provided, an air passage connecting the air inlet and the air outlet is provided in the end body of the rotating shaft, a sealing sleeve is sleeved on the outer surface of the rotating shaft provided with the ventilation groove, the sealing sleeve extends all the way to the air inlet and wraps the air inlet, the head end of the ventilation groove is connected with the outside world, the outside air enters the ventilation groove, travels along the ventilation groove to the air inlet, then enters the air passage, enters the base from the air outlet, and finally enters the main body.

[0006] The purpose of the utility model can also be optimized by adopting the following technical measures.

[0007] Preferably, a sealing ring is sleeved on the sealing sleeve, and the sealing ring seals the gap between the base and the fixing ring.

[0008] Preferably, the ventilation groove is arranged parallel to the axis of the rotary valve.

[0009] Preferably, a fan-shaped groove is provided between the end of the ventilation groove and the air inlet, and the fan-shaped groove is communicated with the ventilation groove.

[0010] After adopting the above technical solution, the switching component of the present utility model uses the ventilation groove for air intake. The arrangement of the ventilation groove can allow external gas to better enter the product interior, thereby improving the quality of the milk foam that needs to be whipped with gas. And because the groove body of the ventilation groove is relatively thin and it needs to inhale air from the gap between the knob and the assembly shell, it can resist the entry of part of the dust when the air enters the knob, preventing pollutants from entering the main body. Description of the Drawings

[0011] Figure 1 It is a schematic diagram of the switching component and the sealing sleeve.

[0012] Figure 2 It is a schematic diagram of the switching component with the sealing sleeve installed.

[0013] Figure 3 It is a sectional view taken along the line A-A of the switching component with the sealing sleeve installed.

[0014] Figure 4 It is a schematic diagram of the milk box foaming structure.

[0015] Figure 5 It is a schematic diagram of the parts that need to cooperate when the switching component is inserted into the main body.

[0016] Figure 6 It is a sectional view taken along the line B-B of the parts that need to cooperate when the switching component is inserted into the main body.

[0017] Figure 7 It is a sectional view taken along the line C-C of the parts that need to cooperate when the switching component is inserted into the main body.

[0018] Figure 8 It is an exploded view of the parts that need to cooperate when the switching component is inserted into the main body.

[0019] Figure 9 It is an exploded view of the milk box foaming structure.

[0020] In the figure: 1. Milk box; 2. Top cover; 3. Rotary valve; 31. Knob; 32. Rotary shaft; 321. Ventilation groove; 322. Air inlet; 323. Air outlet; 324. Fan-shaped groove; 33. Installation stop; 4. Steam joint; 5. Milk outlet pipe; 6. Assembly shell; 7. Milk inlet pipe; 8. Mixing air duct; 801. Steam inlet; 802. Milk outlet; 803. Second air inlet; 804. Milk inlet; 9. Air intake channel; 10. Base; 11. Sealing ring; 12. Sealing sleeve; 13. Fixed ring; 14. Top block; 15. Spring; 16. Top block mounting seat. Detailed Embodiments

[0021] Combined withFigure 9 , a foaming structure of a milk box 1, comprising a main body and a switching component. A steam joint 4, a milk outlet pipe 5 and a milk inlet pipe 7 are provided on the main body. The interfaces on the main body corresponding to the installation of the steam joint 4, the milk outlet pipe 5 and the milk inlet pipe 7 are respectively a steam inlet 801, a milk outlet 802 and a milk inlet 804. A mixing air passage 8 is provided inside the main body, and an air inlet passage 9 is connected to one end of the main body. The installation port of the main body connecting the air inlet passage 9 is a second air inlet 803.

[0022] Combined with Figure 8 , the switching component includes a base 10 and a rotary valve 3. The base 10 is in sealed cooperation with and communicated with the air inlet passage 9.

[0023] Combined with Figure 1 , the rotary valve 3 includes a knob 31 and a rotary shaft 32. The rotary shaft 32 is inserted into the body of the base 10. An air vent groove 321 is provided on the surface of the rotary shaft 32. The air vent groove 321 is arranged parallel to the axis of the rotary shaft 32. A sector groove 324 is provided between the end of the air vent groove 321 and an air inlet 322. The sector groove 324 is communicated with the air vent groove 321. Air flows out from the sector groove 324 after passing through the air vent groove 321 and enters the air inlet 322. The sector groove 324 can allow air to flow in to the maximum extent. The end of the air vent groove 321 is provided with the air inlet 322. An air outlet 323 is provided on the end face of the end of the rotary shaft 32. A air passage communicating the air inlet 322 and the air outlet 323 is provided inside the end of the rotary shaft 32.

[0024] Combined with Figure 2 , a sealing sleeve 12 is sleeved on the outer surface of the rotary shaft 32 where the air vent groove 321 is provided. The sealing sleeve 12 extends to the air inlet 322 and wraps the air inlet 322. A sealing ring 11 is also sleeved on the sealing sleeve 12. The sealing ring 11 seals the gap between the base 10 and a fixed ring 13. The fit between the fixed ring 13 and the rotary valve 3 is a clearance fit. External air can enter the air vent groove 321 through the gap. The first end of the air vent groove 321 is communicated with the outside. External air enters the air vent groove 321, travels along the air vent groove 321 to the air inlet 322, then enters the air passage, enters the base 10 from the air outlet 323, and finally enters the main body.

[0025] Combined with Figure 9 , a top block mounting seat 16 is provided inside the assembly shell 6. A top block 14 and a spring 15 are provided inside the top block mounting seat 16. The spring 15 is sleeved on the top block 14. When the entire foaming structure of the milk box is installed into the coffee machine, the top block 14 abuts against the corresponding groove in the coffee machine body to achieve the function of fixed connection.

Claims

1. A milk box foaming structure, comprising a main body and a switching component. A steam joint, a milk outlet pipe and a milk inlet pipe are provided on the main body. A mixing air duct is provided inside the main body. One end of the main body is connected with an air inlet channel. The switching component includes a base and a rotary valve. The base is in sealed cooperation with and communicated with the air inlet channel. The rotary valve includes a knob and a rotary shaft. The rotary shaft is inserted into the base body, and it is characterized in that: The surface of the rotating shaft is provided with a ventilation groove, the end of the ventilation groove is provided with an air inlet, the end face of the rotating shaft is provided with an air outlet, and an air passage connecting the air inlet and the air outlet is arranged inside the end of the rotating shaft. A sealing sleeve is sleeved on the outer surface of the rotating shaft where the ventilation groove is provided, and the sealing sleeve extends to the air inlet and wraps the air inlet. The head end of the ventilation groove is communicated with the outside, outside air enters the ventilation groove, travels along the ventilation groove to the air inlet, then enters the air passage, enters the base from the air outlet, and finally enters the main body.

2. The milk box foaming structure according to claim 1, characterized in that: A sealing ring is also sleeved on the sealing sleeve, and the sealing ring seals the gap between the base and the fixed ring.

3. The milk box foaming structure according to claim 1, characterized in that: The ventilation groove is arranged parallel to the axis of the rotating shaft.

4. The milk box foaming structure according to claim 1, characterized in that: A fan-shaped groove is arranged between the end of the ventilation groove and the air inlet, and the fan-shaped groove is communicated with the ventilation groove.

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