CN218338206U - Milk heating frothing rod for coffee machine - Google Patents

Abstract

The utility model provides a milk heating frothing rod for coffee machine, which comprises a steam nozzle, a flexible steam pipe, a steam pipe shell and an elastic sleeve, wherein the upper end of the steam nozzle extends into the lower end of the steam pipe shell, the lower end of the elastic sleeve is connected with the lower end of the steam nozzle in a wrapping way, and the upper end of the elastic sleeve is connected with the steam pipe shell; the steam pipe shell is connected to the coffee machine shell, one end of the flexible steam pipe is connected with one end of the steam nozzle in the steam pipe shell, and the other end of the flexible steam pipe penetrates out of the other end of the steam pipe shell and then is connected with an outlet of the electromagnetic valve in the coffee machine; the lower end of the elastic sleeve is also connected with a mixing pipe which is used for sucking milk, mixing the milk with steam, heating the mixture and generating milk bubbles; an air inlet channel communicated to the inner cavity of the mixing pipe is formed in the outer wall of the mixing pipe or the elastic sleeve. The utility model provides a coffee machine milk heating frothing pole can effectively avoid scalding the hand risk to take place, guarantees the security performance.

Description

Milk heating frothing rod for coffee machine

Technical Field

The utility model belongs to the technical field of the coffee machine technique and specifically relates to a milk heating frothing pole for coffee machine.

Background

When drinking coffee, a layer of milk foam (milk foam for short) is added on the surface of the coffee, so that the taste can be enhanced. The milk frother is an appliance for making milk froths on a coffee machine. The milk foam device in the prior art comprises a mixing cavity, a steam pipe, a gas pipe, a milk pipe and a milk tank, wherein the milk tank is communicated with the mixing cavity through the milk pipe, the mixing cavity is provided with a milk foam outlet, and the steam pipe and the gas pipe are both directly or indirectly communicated with the mixing cavity. The milk frother in the prior art is required to be provided with the milk tank which is generally accommodated in the coffee machine shell, so that the scarce space in the coffee machine shell is more crowded, and the whole volume of the coffee machine is increased; in addition, the milk is stored in the milk tank, and may go bad after a long time, which affects the taste and health, even blocks the milk conveying pipe, and the user experience is poor; moreover, each time milk is added to the milk container, the coffee maker generally needs to open the shell of the coffee maker, which is inconvenient to operate, and the milk container contained in the shell is troublesome to clean.

In order to solve the above defects in the prior art, the applicant developed a steam rod for preparing milk foam on a coffee machine in the last few years, with the patent number of CN212878945U, which is simpler in structure and occupies less space compared with the original milk foam device structure in which a milk tank needs to be placed; the following drawbacks still exist: because the steam pipe is the hard pipe that directly exposes, because the steam temperature is high, can cause the steam pipe wall to scald, when the operation of holding the ox teatcup below the steam pole, the user can take place to scald the risk when accidentally bumping into the steam pipe.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem be, in order to overcome at least one defect among the prior art, provide a coffee machine milk heating frothing pole, can effectively avoid scalding the hand risk to take place, guarantee the security performance.

In order to solve the above problems, the present invention provides a milk heating frothing rod for coffee machine, which comprises a steam nozzle, a flexible steam pipe, a steam pipe shell and an elastic sleeve, wherein the upper end of the steam nozzle extends into the lower end of the steam pipe shell, the lower end of the elastic sleeve is connected to the lower end of the steam nozzle in a wrapping manner, and the upper end of the elastic sleeve is connected to the steam pipe shell to realize the connection between the steam nozzle and the steam pipe shell; the steam pipe shell is connected to the coffee machine shell, one end of the flexible steam pipe is connected with one end of the steam nozzle in the steam pipe shell, and the other end of the flexible steam pipe penetrates out of the other end of the steam pipe shell and then is connected with an electromagnetic valve outlet in the coffee machine; the lower end of the elastic sleeve is also connected with a mixing pipe which is used for sucking milk, mixing and heating the milk and steam and generating milk foam; and an air inlet channel communicated to the inner cavity of the mixing pipe is formed in the outer wall of the mixing pipe or the elastic sleeve.

Compared with the prior art, the milk heating frothing rod for the coffee machine has the following advantages:

the utility model discloses a structure through steam pipe casing and flexible steam pipe has replaced the structure that original stereoplasm jet pipe adds the nozzle in the coffee machine milk heating frothing pole structure, and high temperature steam enters into the hybrid tube through flexible steam pipe in the in-service use to the steam pipe casing is overlapped outside flexible steam pipe, has realized thermal isolation, when the handheld cow teatcup of user carries out the bubbling operation, can not take place to scald the risk even if touch the steam pipe casing carelessly, guarantees user's safety; in addition, an elastic sleeve is sleeved outside the lower end of the steam pipe shell, the connection between the steam pipe shell and the steam nozzle is realized through the elastic sleeve, and the appearance is attractive; and meanwhile, the steam nozzle is effectively protected.

As an improvement, one end of the steam nozzle, which is positioned in the steam pipe shell, is provided with a splicing column for splicing a flexible steam pipe, a spring is sleeved outside the splicing column, and when one end of the flexible steam pipe is connected outside the splicing column, the spring is sleeved and limited on the outer wall of the connection part of the flexible steam pipe and the splicing column. In the improved structure, the quick plug connection of the flexible steam pipe and the steam nozzle is effectively realized through the plug column; and a spring is sleeved on the outer wall of the connecting part of the flexible steam pipe and the insertion column and used for clamping and limiting the flexible steam pipe and the insertion column, so that the connection stability of the flexible steam pipe and the insertion column is ensured.

And in the improvement, an outward convex limit ring is arranged on the outer wall of the middle part of the steam nozzle, the lower end of the elastic sleeve is sleeved outside the lower end of the steam nozzle, a limit step is arranged in the inner cavity of the elastic sleeve, the lower end of the limit ring is matched on the limit step, and the upper end surface of the limit ring is abutted against the lower end surface of the steam pipe shell. In the improved structure, the limit ring is used for realizing

And the steam pipe shell comprises a vertical pipe body and a transverse pipe body communicated with the vertical pipe body, the upper end of the vertical pipe body is higher than the transverse pipe body, the upper end of the elastic sleeve is sleeved outside the vertical pipe body, and a through hole for the transverse pipe body to penetrate out is formed in the side wall of the upper end of the elastic sleeve. In the above-mentioned improvement structure, elastic sleeve's special structural design makes the lower extreme of vertical body penetrate elastic sleeve from the through-hole, and when penetrating horizontal body and the contact of through-hole diapire, then break elastic sleeve upper end off with the fingers and thumb, make its suit the upper end of vertical body higher than the outside of horizontal body part can, realize through elastic sleeve that the connection of steam nozzle and steam pipe casing is fixed.

In another improvement, the mixing pipe comprises a metal outer pipe and a mixing inner pipe, the upper end of the metal outer pipe is sleeved on the outer wall of the lower end of the elastic sleeve, the mixing inner pipe is assembled in the inner cavity of the lower end of the metal outer pipe, a mixing cavity is formed between the upper end of the mixing inner pipe and the lower end face of the elastic sleeve, and the gas outlet of the steam nozzle extends into the mixing cavity; a first channel for sucking up milk is arranged between the outer wall of the mixing inner tube and the inner wall of the metal outer tube, and a second channel for spraying out milk foam is arranged in the middle of the mixing inner tube. In the improved structure, the metal outer pipe structure increases the appearance attractiveness; the mixing chamber is arranged to enable the milk to be fully frothed.

In another improvement, a positioning insertion tube is arranged at the lower end of the elastic sleeve, and the diameter of the positioning insertion tube is smaller than that of the elastic sleeve, so that a positioning boss protruding out of the outer wall of the positioning insertion tube is formed on the lower end surface of the elastic sleeve; when the metal outer pipe is sleeved outside the positioning insertion pipe, the top surface of the metal outer pipe is abutted against the lower end surface of the positioning boss, a gap communicated with the mixing cavity is reserved between the inner wall of the metal outer pipe and the outer wall of the positioning insertion pipe, and an air inlet groove communicated to the gap is formed in the lower end surface of the positioning boss, so that the air inlet channel is formed. In the above-mentioned improved structure, the location boss sets up and carries out axial spacing after being used for the metal outer tube suit to terminal surface shaping air inlet groove under the boss of location, convenient processing, the appearance is pleasing to the eye.

And the outer wall of the mixing inner pipe is provided with a plurality of rib plates which are radially distributed and axially extend along the mixing inner pipe, and the outer side wall of each rib plate is matched with the inner wall of the metal outer pipe. In the improved structure, the arrangement of the rib plates enables the inner mixing pipe to be limited in the radial direction in the outer metal pipe, so that the stable gap between the inner mixing pipe and the outer metal pipe is ensured, and the smooth suction of milk is ensured; and the rib plate can also effectively enhance the strength of the assembling structure of the mixed inner pipe and the metal outer pipe.

And the radial outer ends of the plurality of rib plates are respectively provided with a clamping groove, an elastic clamping ring is assembled in the plurality of clamping grooves, and the outer wall of the elastic clamping ring is tightly supported and limited on the inner wall of the metal outer pipe. In the improved structure, the mixed inner pipe and the metal outer pipe are supported and limited through the elastic clamping ring, so that the structure is simple and the installation is convenient; other fasteners are not needed for connection, the cost is reduced, and the attractive appearance is ensured.

Preferably, the flexible steam pipe is a silicone tube, and the elastic sleeve is a silicone sheath. In the structure, the flexible steam pipe and the elastic sleeve are made of silica gel materials, so that the performance is more stable.

Drawings

FIG. 1 is a schematic view of a half-section structure of a milk heating frothing rod for a coffee maker of the present invention;

FIG. 2 is a schematic view of an explosion structure of the milk heating frothing rod for the coffee maker of the present invention;

FIG. 3 is an enlarged view of the structure at X in FIG. 1;

FIG. 4 is a schematic view of the steam pipe casing structure of the present invention;

fig. 5 is a schematic structural view of the elastic sleeve of the present invention;

FIG. 6 is another schematic angular structure of the elastic sleeve of FIG. 5;

FIG. 7 is a schematic view of the structure of the mixing inner tube of the present invention;

fig. 8 is a working state diagram of the milk heating frothing rod for the coffee maker of the present invention.

Description of reference numerals:

1. a steam nozzle; 2. a flexible steam pipe; 3. a steam tube housing; 3.1, a vertical pipe body; 3.1.1, open slot; 3.2, a transverse pipe body; 4. an elastic sleeve; 4.1, through holes; 5. inserting the column; 6. a spring; 7. a limiting ring; 8. a limiting step; 9. a metal outer tube; 10. mixing the inner pipe; 11. a mixing chamber; 12. a first channel; 13. a second channel; 14. positioning the cannula; 14.1, an annular step; 14.1.1, gap; 14.2, an upper collar; 14.3, a lower collar; 15. positioning the boss; 15.1, an air inlet groove; 16. a rib plate; 16.1, a clamping groove; 17. an elastic collar; 18. an intake passage.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it should be noted that the terms "upper end", "lower side", "outside", "middle part", "outer side wall", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply 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 limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

As shown in fig. 1 and 2, the utility model provides a milk heating frothing rod for coffee machine, which comprises a steam nozzle 1, a flexible steam pipe 2, a steam pipe shell 3 and an elastic sleeve 4; the upper end of the steam nozzle 1 extends into the lower end of the steam pipe shell 3, in addition, the lower end of the elastic sleeve 4 is connected to the lower end of the steam nozzle 1 in a wrapping mode, the upper end of the elastic sleeve 4 is connected with the steam pipe shell 3, and the connection between the steam nozzle 1 and the steam pipe shell 3 is realized through the elastic sleeve 4; one end of a flexible steam pipe 2 is connected with one end of the steam nozzle 1 positioned in the steam pipe shell 3, the upper end of the steam pipe shell 3 is connected on the coffee machine shell, and the other end of the flexible steam pipe 2 penetrates out of the other end of the steam pipe shell 3 and then is connected with an electromagnetic valve outlet in the coffee machine; on the other hand, a mixing tube for sucking milk and mixing it with steam to heat and generate milk foam is connected to the lower end of the elastic sleeve 4.

Specifically, as shown in fig. 2 and 3, an insertion column 5 for inserting the flexible steam pipe 2 is arranged at the end part of the steam nozzle 1, which is located in the steam pipe shell 3, and the outer part of the insertion column 5 is sleeved with a spring 6, when one end of the flexible steam pipe 2 is connected to the outer part of the insertion column 5, the spring 6 is sleeved and limited on the outer wall of the connection part of the flexible steam pipe 2 and the insertion column 5, so that the clamping limitation on the outer wall of the connection part of the flexible steam pipe 2 is realized, the stability of the connection structure of the flexible steam pipe 2 and the steam nozzle 1 is ensured, the use and installation performance is improved, and the potential safety hazard caused by the disconnection of the connection part of the flexible steam pipe 2 and the steam nozzle 1 is avoided.

On the other hand, in the structure, in order to further improve the convenience of connecting the steam nozzle 1 and the steam pipe shell 3, the outer wall of the middle part of the steam nozzle 1 is provided with a convex limiting ring 7, the lower end of the elastic sleeve 4 is sleeved outside the lower end of the steam nozzle 1, and a corresponding limiting step 8 is arranged in the inner cavity of the elastic sleeve 4; when the two parts are assembled, the steam nozzle 1 is firstly penetrated into the mounting hole at the lower end of the steam pipe shell 3 from bottom to top until the upper end surface of the limiting ring 7 is abutted against the lower end surface of the steam pipe shell 3, and then the elastic sleeve 4 is sleeved from bottom to top, so that the lower end of the limiting ring 7 is matched on the corresponding limiting step 8 in the inner cavity of the elastic high pipe, and the axial limiting is realized; after the upper end of the elastic sleeve 4 is connected with the steam pipe shell 3, the synchronous and stable connection of the steam nozzle 1 and the steam pipe shell 3 can be realized.

In addition, steam nozzle 1 is integral injection molding structure in this embodiment, and conical venthole also is direct molding on steam nozzle 1 promptly, compares in original structure and passes through a spiro union form at the lower extreme of steam pipe and connect a nozzle structure and compare, and the structure is simpler, and processing is convenient, and is with low costs.

More specifically, as shown in fig. 1, 2 and 4, in this embodiment, the steam pipe shell 3 includes a vertical pipe body 3.1 and a horizontal pipe body 3.2 communicated with the vertical pipe body 3.1, the upper end of the vertical pipe body 3.1 is higher than the horizontal pipe body 3.2, the upper end of the elastic sleeve 4 is sleeved outside the vertical pipe body 3.1, and a through hole 4.1 for the horizontal pipe body 3.2 to penetrate out is formed in a side wall of the upper end of the elastic sleeve 4. More specifically, in the structure, one end of the flexible steam pipe 2 is required to be inserted and limited with the insertion column 5 in the assembling process, then the spring 6 is sleeved on the outer wall of the connection part of the flexible steam pipe 2 and the insertion column 5, the other end of the flexible steam pipe 2 penetrates through the vertical pipe body 3.1 and then penetrates out of the transverse pipe body 3.2 after the belt is firmly connected, and then the elastic sleeve 4 is sleeved; therefore, in order to facilitate the flexible steam pipe 2 to penetrate through the vertical pipe body 3.1 and the inner cavity of the transverse pipe body 3.2 which are vertically arranged, the outer wall of one side, away from the transverse pipe body 3.2, of the vertical pipe is provided with the open groove 3.1.1 in the structure, as shown in fig. 4, the flexible steam pipe 2 is more convenient to bend from the inner cavity of the vertical pipe body 3.1 to enter the transverse pipe body 3.2.

On the other hand, when the elastic sleeve 4 is sleeved in the structure, the lower end of the vertical pipe body 3.1 needs to penetrate through the through hole 4.1 in the side wall of the elastic sleeve 4, at this time, because the elastic sleeve 4 is elastic, the upper end part of the elastic sleeve 4 can be bent towards one side away from the vertical pipe body 3.1 along the position of the through hole 4.1 until the elastic sleeve is sleeved to a set position, the bent part of the upper end of the elastic sleeve 4 is pulled back towards the vertical pipe body 3.1 until the inner hole of the upper end of the elastic sleeve 4 is assembled at the upper end of the vertical pipe body 3.1 and is higher than the outer part of the transverse pipe body 3.2, at this time, one end of the transverse pipe body 3.2 close to the vertical pipe body 3.1 is matched with the through hole 4.1, so that the connection of the elastic sleeve 4 is realized, and the steam nozzle 1 is firmly connected with the steam pipe shell 3 through the elastic sleeve 4, so that the structure is simple and the assembly and the disassembly are convenient. In this embodiment, a gap 14.1.1 communicating with the through hole 4.1 is formed on the side wall of the elastic sleeve 4 and below the through hole 4.1, as shown in fig. 6, so that the vertical pipe body 3.1 can be more conveniently inserted into the through hole 4.1 for assembly.

As shown in fig. 1 and 2, in the present embodiment, the mixing tube includes an outer metal tube 9 and an inner mixing tube 10, wherein an upper end of the outer metal tube 9 is sleeved on an outer wall of a lower end of the elastic sleeve 4, the inner mixing tube 10 is fitted in an inner cavity of the lower end of the outer metal tube 9, a mixing cavity 11 is formed between an upper end of the inner mixing tube 10 and a lower end surface of the elastic sleeve 4, and an air outlet at a lower end of the steam nozzle 1 extends into the mixing cavity 11; in addition, a first channel 12 for sucking up milk is arranged between the outer wall of the mixing inner tube 10 and the inner wall of the metal outer tube 9, and a second channel 13 for ejecting milk bubbles is arranged in the middle of the mixing inner tube 10; in addition, the outer wall of the mixing tube or the elastic sleeve 4 is provided with an air inlet passage 18 communicated with the mixing cavity 11. As shown in fig. 8, when the cup containing milk is placed under the mixing tube and the lower end of the mixing tube is immersed under the liquid level, high temperature steam is firstly discharged through the steam nozzle 1, and the steam takes away the air in the mixing chamber 11 to form a negative pressure area, so that the milk in the cup is sucked into the mixing chamber 11 along the first passage 12 upwards, and the air simultaneously flows into the mixing chamber 11 due to the air inlet passage 18 through the mixing chamber 11, in other words, the air, the high temperature steam and the milk are mixed in the mixing chamber 11 to form milk bubbles, and then the milk bubbles are sprayed into the cup containing milk through the second passage 13, so that the milk in the cup is quickly formed into milk bubbles. Shown in fig. 8, the representative steam flow direction with the number (1); the representative milk flow direction with the number (2); with the number (3) representing the outside air flow direction; the representative milk foam flow direction with the number (4).

More specifically, in the above structure, the lower end of the elastic sleeve 4 is provided with the positioning insertion tube 14, and the diameter of the positioning insertion tube 14 is smaller than that of the elastic sleeve 4, so that the lower end surface of the elastic sleeve 4 forms the positioning boss 15 protruding out of the outer wall of the positioning insertion tube 14; when the metal outer pipe 9 is sleeved outside the positioning insertion pipe 14, the top surface of the metal outer pipe 9 abuts against the lower end surface of the positioning boss 15, a gap communicated with the mixing cavity 11 is reserved between the inner wall of the metal outer pipe 9 and the outer wall of the positioning insertion pipe 14, and an air inlet groove 15.1 communicated with the gap is formed in the lower end surface of the positioning boss 15, so that the arrangement of the air inlet groove 15.1 in the structure is convenient to process, and the attractiveness of the outer wall of the mixing pipe cannot be influenced; meanwhile, the positioning boss 15 can limit the vertical sleeving position of the metal outer pipe 9. More specifically, as shown in fig. 5, an annular step 14.1 is provided on an outer wall of the positioning insertion tube 14 near one end of the elastic sleeve 4, a notch 14.1.1 extending in the axial direction and communicating with the air inlet groove 15.1 is provided on the annular step 14.1, and an upper end opening portion of the metal outer tube 9 is sleeved outside the annular step 14.1; in addition, an upper clamping ring 14.2 and a lower clamping ring 14.3 which are protruded outwards are further arranged on the outer wall of the positioning insertion tube 14, when the metal outer tube 9 is installed, the inner wall of the metal outer tube 9 is clamped with the upper clamping ring 14.2 and the lower clamping ring 14.3, and similarly, the upper clamping ring 14.2 and the lower clamping ring 14.3 are not of a whole-circle protruding structure, so that after the metal outer tube 9 is inserted and matched with the positioning insertion tube 14, an air inlet channel 18 is formed between the inner wall of the metal outer tube 9 and the outer wall of the positioning insertion tube 14, and external air can enter the mixing cavity 11 from the air inlet groove 15.1.

In addition, as shown in fig. 7, a plurality of ribs 16 which are radially distributed and axially extend are arranged on the outer peripheral wall of the mixing inner tube 10, and the outer side wall of each rib 16 is abutted against the inner wall of the lower end of the metal outer tube 9 to ensure stable connection; and all be equipped with draw-in groove 16.1 at the radial outer end of a plurality of floor 16, and the elastic collar 17 is equipped with in a plurality of draw-in grooves 16.1, and the outer wall of elastic collar 17 props tightly spacing on the inner wall of metal outer tube 9, further guarantees the stability of mixed inner tube 10 and metal outer tube 9 cartridge structure to simple to operate, directly will be equipped with the mixed inner tube 10 of elastic collar 17 and insert the lower extreme of metal outer tube 9 can.

In this embodiment, the preferred flexible steam pipe 2 is a silicone tube, and the elastic sleeve 4 is a silicone sheath.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present invention.

Claims (9)

1. The utility model provides a coffee machine milk heating froth pole which characterized in that: the steam nozzle comprises a steam nozzle (1), a flexible steam pipe (2), a steam pipe shell (3) and an elastic sleeve (4), wherein the upper end of the steam nozzle (1) extends into the lower end of the steam pipe shell (3), the lower end of the elastic sleeve (4) is connected to the lower end of the steam nozzle (1) in a wrapping mode, and the upper end of the elastic sleeve (4) is connected with the steam pipe shell (3) so as to realize the connection of the steam nozzle (1) and the steam pipe shell (3); the steam pipe shell (3) is connected to the coffee machine shell, one end of the flexible steam pipe (2) is connected with one end, located in the steam pipe shell (3), of the steam nozzle (1), and the other end of the flexible steam pipe (2) penetrates out of the other end of the steam pipe shell (3) and then is connected with an electromagnetic valve outlet in the coffee machine; the lower end of the elastic sleeve (4) is also connected with a mixing pipe which is used for sucking milk, mixing the milk with steam and heating the milk and generating milk bubbles; an air inlet channel (18) communicated to the inner cavity of the mixing pipe is formed in the outer wall of the mixing pipe or the elastic sleeve (4).

2. A milk heating froth wand for a coffee machine according to claim 1, wherein: one end of the steam nozzle (1) in the steam pipe shell (3) is provided with a plug-in column (5) for plugging a flexible steam pipe (2), a spring (6) is sleeved outside the plug-in column (5), and when one end of the flexible steam pipe (2) is connected to the outside of the plug-in column (5), the spring (6) is sleeved and limited on the outer wall of the connection part of the flexible steam pipe (2) and the plug-in column (5).

3. A milk heating froth wand for a coffee machine according to claim 1, wherein: the steam nozzle is characterized in that an outward-protruding limiting ring (7) is arranged on the outer wall of the middle of the steam nozzle (1), the lower end of the elastic sleeve (4) is sleeved outside the lower end of the steam nozzle (1), a limiting step (8) is arranged in the inner cavity of the elastic sleeve (4), the lower end of the limiting ring (7) is matched on the limiting step (8), and the upper end face of the limiting ring (7) is abutted against the lower end face of the steam pipe shell (3).

4. A milk heating froth wand for a coffee machine according to claim 1, wherein: the steam pipe casing (3) include one vertical body (3.1) and one with horizontal body (3.2) of vertical body (3.1) intercommunication, just the upper end of vertical body (3.1) is higher than horizontal body (3.2), the upper end suit of elastic sleeve (4) is in the outside of vertical body (3.1), just be equipped with on the lateral wall of elastic sleeve (4) upper end and be used for supplying through-hole (4.1) that horizontal body (3.2) were worn out.

5. A milk heating froth wand for a coffee machine according to claim 1, wherein: the mixing pipe comprises a metal outer pipe (9) and a mixing inner pipe (10), the upper end of the metal outer pipe (9) is sleeved on the outer wall of the lower end of the elastic sleeve (4), the mixing inner pipe (10) is assembled in the inner cavity of the lower end of the metal outer pipe (9), a mixing cavity (11) is formed between the upper end of the mixing inner pipe (10) and the lower end face of the elastic sleeve (4), and the air outlet of the steam nozzle (1) extends into the mixing cavity (11); a first channel (12) for sucking up milk is arranged between the outer wall of the mixing inner tube (10) and the inner wall of the metal outer tube (9), and a second channel (13) for spraying out milk foam is arranged in the middle of the mixing inner tube (10).

6. A milk heating froth wand for a coffee machine according to claim 5, wherein: a positioning insertion pipe (14) is arranged at the lower end of the elastic sleeve (4), and the diameter of the positioning insertion pipe (14) is smaller than that of the elastic sleeve (4), so that a positioning boss (15) protruding out of the outer wall of the positioning insertion pipe (14) is formed on the lower end surface of the elastic sleeve (4); when the metal outer pipe (9) is sleeved outside the positioning insertion pipe (14), the top surface of the metal outer pipe (9) is abutted against the lower end surface of the positioning boss (15), a gap communicated with the mixing cavity (11) is reserved between the inner wall of the metal outer pipe (9) and the outer wall of the positioning insertion pipe (14), and an air inlet groove (15.1) communicated to the gap is formed in the lower end surface of the positioning boss (15) to form the air inlet channel (18).

7. A milk heating froth wand for a coffee machine according to claim 5, wherein: the outer peripheral wall of the mixing inner pipe (10) is provided with a plurality of rib plates (16) which are radially distributed and axially extend along the mixing inner pipe, and the outer side wall of each rib plate (16) is matched with the inner wall of the metal outer pipe (9).

8. A milk heating froth wand for a coffee machine according to claim 7, wherein: the radial outer end of the rib plate (16) is provided with a clamping groove (16.1), the clamping groove (16.1) is internally provided with an elastic clamping ring (17), and the outer wall of the elastic clamping ring (17) is tightly supported and limited on the inner wall of the metal outer pipe (9).

9. A milk heating froth wand for a coffee machine according to claim 1, wherein: the flexible steam pipe (2) is a silicone tube, and the elastic sleeve (4) is a silicone sheath.

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