CN213757905U

CN213757905U - Novel milk foam machine

Info

Publication number: CN213757905U
Application number: CN202022402440.3U
Authority: CN
Inventors: 许善秀
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-07-23
Anticipated expiration: 2030-10-26

Abstract

The utility model relates to a novel milk foam machine, which comprises a shell, a container which is arranged in the shell and is used for containing milk, a stirring component which is arranged in the container, and a driving device which is used for driving the stirring component to move; and a ceramic heating structure for heating the container is arranged in the shell. The utility model designs a novel milk foam machine, which can uniformly heat milk in the container, is not easy to burn and reduce the cost by arranging a ceramic heating structure in the shell for heating the container; meanwhile, the energy storage device is arranged in the shell of the milk foam machine, so that the problem that the traditional milk foam machine needs a power supply seat with a power line to be used, and the problem that the traditional milk foam machine is inconvenient to use and store is solved.

Description

Novel milk foam machine

Technical Field

The utility model relates to a technical field of milk bubble machine especially relates to a novel milk bubble machine.

Background

With the improvement of living standard, people have higher and higher demand on beverages, and the milk beverage or coffee beverage after being stirred and frothed has much better mouthfeel than the original product without being frothed, so the market has higher and higher demand on the milk frothed beverage. At present, the types of household appliances for stirring or foaming milk on the market are more.

Some common milk foam machines in the market generally use a heating plate or a heating pipe for heating, but the heating plate or the heating pipe is used for heating, so that on one hand, the production cost of the heating plate or the heating pipe is high, and on the other hand, milk of the milk foam machine is heated unevenly and is easily burnt; meanwhile, the conventional milk foam machine is generally provided with a power supply seat at the bottom, and is connected to a household socket through a power line of the power supply seat to supply power, so that the milk foam machine is not only required to be used in a place with the socket, but also limited in use area and limited by the power line, and is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The to-be-solved technical problem of the utility model is to provide a novel milk bubble machine, through set up in the casing and give the ceramic heating structure of container heating, the ceramic heating structure is hugged closely the container sets up, can make milk liquid in the container is heated evenly, is difficult to be burnt and is stuck with paste, simultaneously, compares traditional heating device more for energy-conservation to greatly reduced the cost.

(II) technical scheme

The utility model adopts a scheme for solving the technical problems and is a novel milk foam machine which comprises a shell, a container which is arranged in the shell and is used for containing milk, a stirring component which is arranged in the container and a driving device which is used for driving the stirring component to move; and a ceramic heating structure for heating the container is arranged in the shell.

Preferably, the driving device is a driving motor.

Preferably, the container is provided with a filling opening for milk addition.

By adopting the scheme, the ceramic heating structure for heating the container is arranged in the shell, so that the milk in the container is uniformly heated and is not easily burnt, and the energy is saved, and the cost is greatly reduced.

Further, the ceramic heating structure is arranged at the bottom of the container.

Furthermore, the ceramic heating structure comprises a ceramic heating sheet and a pressing plate, and the ceramic heating sheet is arranged between the bottom of the container and the pressing plate.

Preferably, the ceramic heating sheet is a PTC heating body, so that the ceramic heating sheet is small in thermal resistance, high in heat exchange efficiency and more energy-saving, and meanwhile, the surface of the traditional heater is not reddened, and the safety performance is good.

By adopting the scheme, the pressing plate is adopted to cling the ceramic heating sheet to the bottom of the container, so that the heating of the ceramic heating sheet to the container is more stable, the milk in the container is heated more uniformly, the foaming effect is good, and the taste of the milk foam is good.

Further, the ceramic heating structure comprises a ceramic heating film covering the outer side wall of the container, and the height range of the ceramic heating film is 3-5 cm.

Preferably, the ceramic heating film is a PTC heating body, so that the ceramic heating film is small in thermal resistance, high in heat exchange efficiency and more energy-saving, and meanwhile, the surface of the traditional heater is not reddened, and the safety performance is good.

Preferably, the ceramic heating film is arranged between the shell and the container and is tightly attached to the outer wall of the container, so that milk in the container is uniformly heated, the foaming effect is good, and the milk foam has good taste.

Further, a temperature detection device which is in contact with the container and is used for detecting the temperature of the container is arranged in the shell.

Preferably, the temperature detecting device is a temperature sensor or a temperature sensor.

Preferably, the pressing plate is provided with a through hole for the temperature detection device to pass through, so that the temperature detection device is in contact with the bottom of the container, and the temperature detection accuracy of the temperature detection device on milk in the container is guaranteed.

Furthermore, an energy storage device for providing power for the driving device is arranged in the shell, and the driving device is electrically connected with the energy storage device.

Preferably, the energy storage device comprises a battery pack or a mobile power supply.

Preferably, a charging port for charging the energy storage device is arranged on the housing.

Preferably, the charging port is a MICRO-USB port, and the charging port is externally connected with a protector for safety.

By adopting the scheme, the power supply seat with the power line is required to be connected with the traditional milk foam machine for use through the built-in energy storage device in the shell, so that the problems of inconvenient use and storage caused by the fact that the traditional milk foam machine is used with the power supply seat with the power line are solved.

Furthermore, the energy storage device is connected with a control structure, and the control structure comprises a control circuit board electrically connected with the energy storage device and a switch button used for triggering the control circuit board.

Preferably, the control circuit board is disposed in the housing, and the switch button is disposed outside the housing.

Preferably, the control circuit board is a PCB board.

By adopting the scheme, the control circuit board is used for controlling the energy storage device to release electric energy, so that the driving device is started to drive the stirring assembly to operate; the switch button is used for controlling the connection or disconnection of the control circuit board and the energy storage device.

Further, the driving device is provided with a driving shaft, and one end of the driving shaft facing to the container is connected with the stirring assembly.

Furthermore, the stirring assembly comprises a rotating shaft inserted into the driving shaft, a stirring piece sleeved on the rotating shaft, and a stirring spring arranged at the outer edge of the stirring piece.

Preferably, the stirring spring is a spiral elastic member surrounding an outer edge of the stirring member.

Preferably, the stirring piece is provided with a groove for mounting the rotating shaft, and the bottom of the container is provided with a through hole for accommodating the rotating shaft.

Preferably, the stirring piece with pivot interference fit guarantees the rotation of pivot drives during the rotation of stirring piece, the stirring piece is difficult for breaking away from.

By adopting the scheme, the structure can quickly generate milk foam, and the milk foam can be uniformly stirred to improve the mouthfeel.

Furthermore, the bottom of the shell is detachably provided with a bottom cover, the top of the shell is provided with a top cover, and a sealing ring is arranged between the top cover and the container.

Preferably, the top cap extends towards one end of the container to form a sealing end, the sealing ring is mounted on the outer wall of the sealing end, and the outer wall of the sealing ring is in contact with the inner wall of the container.

Preferably, the top cover is arranged at the upper end of the liquid filling opening of the container and used for sealing the liquid filling opening and preventing the milk from splashing in the operation process of the milk foaming machine.

By adopting the scheme, the bottom cover and the shell are detachably mounted, so that the detachment and the mounting of the milk foam machine as well as the subsequent maintenance and replacement are facilitated; due to the arrangement of the sealing ring, the sealing performance of the top cover on the container is enhanced, milk in the container is prevented from splashing in the using process, meanwhile, the top cover can be prevented from being separated from the container, and the safety is improved.

More specifically, an energy storage fixing frame used for fixing the energy storage device and a driving fixing frame used for fixing the driving device which are matched with each other are arranged in the shell; one end, far away from the drive fixing frame, of the energy storage fixing frame is matched with the bottom cover, and one end, far away from the energy storage fixing frame, of the drive fixing frame is matched with the bottom of the container.

Preferably, the container and the driving fixing frame are in magnetic suspension connection.

Preferably, the temperature detection device is arranged at the bottom of the container, and an elastic piece is sleeved outside the temperature detection device; and one side of the driving fixing frame facing the container extends to form an installation groove for accommodating the temperature detection device.

More specifically, the driving fixing frame comprises a first annular body with an opening arranged at one end close to the energy storage fixing frame, and a plurality of L-shaped supporting pieces are formed by extending the outer wall of the first annular body outwards and towards the container;

the energy storage fixing frame comprises a second annular body with an opening at one end, openings extending out of the energy storage device are formed in two opposite sides of the outer wall of the second annular body, meanwhile, a supporting part is formed by extending the outer wall outwards, a circular table matched with the driving fixing frame is formed by extending the end, close to the driving fixing frame, of the second annular body outwards, and a supporting table with a cross-shaped opening is arranged at the bottom of the circular table;

the round platform and the driving fixing frame are combined to form an installation cavity for installing a driving device.

Preferably, the two opposite sides of the outer wall of the energy storage fixing frame are provided with openings for the energy storage device to extend out, so that the energy storage device can be ensured to be in contact with the control circuit board and the charging port, and the energy storage device is discharged and charged.

Preferably, the L-shaped supporting pieces are provided with through holes.

Preferably, the outer wall of the driving fixing frame extends outwards to form a supporting table with a through hole.

Preferably, the outer wall of the circular truncated cone extends outwards to form two support columns with through holes, one of the support columns is matched with the support table, and the through holes of the support columns are communicated with the through holes of the support table; the other support column is connected with the L-shaped support piece, and the L-shaped support piece is provided with a through hole communicated with the through hole of the support column.

(III) advantageous effects

Compared with the prior art, the utility model designs a novel milk foam machine, which can uniformly heat milk in the container, is not easy to burn and reduce the cost by arranging a ceramic heating structure in the shell for heating the container; meanwhile, an energy storage device is arranged in the shell of the milk foam machine, so that the problem that the traditional milk foam machine needs to be used by a power supply seat with a power line is solved, and the problems of inconvenient use and storage are solved.

Drawings

FIG. 1 is an exploded view of a novel milk frother in a first embodiment;

FIG. 2 is a cross-sectional view of a novel milk frother (embodying a ceramic heater chip) according to one embodiment;

FIG. 3 is an enlarged view of the point A in FIG. 2;

FIG. 4 is a cross-sectional view of a novel milk frother (embodying a temperature sensing device) in accordance with one embodiment;

FIG. 5 is an enlarged view of the point B in FIG. 4;

FIG. 6 is a sectional view of a novel milk frother of the second embodiment;

fig. 7 is a schematic view of the driving mount of the present invention;

fig. 8 is a schematic view of the energy storage fixing frame of the present invention;

fig. 9 is a schematic view of the energy storage fixing frame of the present invention (embodying a cylinder);

fig. 10 is a schematic view of the bottom cover of the present invention.

Description of reference numerals: 1. a housing; 11. a bottom cover; 111. an abutment post; 112. a support frame; 12. a top cover; 121. a seal ring; 122. sealing the end; 13. a charging port; 14. a protective member; 2. a container; 3. a stirring assembly; 31. a rotating shaft; 32. a stirring member; 321. a groove; 33. a stirring spring; 4. a drive device; 41. a drive shaft; 42. driving the fixed frame; 421. mounting grooves; 423. a boss; 424. perforating; 425. a first annular body; 5. a ceramic heating structure; 51. a ceramic heating plate; 52. pressing a plate; 6. a temperature detection device; 61. an elastic member; 7. an energy storage device; 71. an energy storage fixing frame; 711. a support portion; 711-1, cylindrical; 712. a circular truncated cone; 712-1, support columns; 713. a support table; 714. a second annular body; 8. a control structure; 81. a control circuit board; 82. and a button is switched on and off.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

as shown in fig. 1-3, the novel milk frother of the present embodiment includes a housing 1, a container 2 disposed in the housing 1 for containing milk, a stirring assembly 3 disposed in the container 2, and a driving device 4 for driving the stirring assembly 3 to move; a ceramic heating structure 5 for heating the container 2 is arranged in the shell 1. Preferably, the driving device 4 is a driving motor. In this embodiment, the ceramic heating structure 5 is disposed at the bottom of the container 2, and the ceramic heating structure 5 includes a ceramic heating plate 51 and a pressing plate 52, and the ceramic heating plate 51 is disposed between the bottom of the container 2 and the pressing plate 52; adopt the clamp plate 52 will ceramic heating plate 51 hugs closely in the bottom of container 2 for ceramic heating plate 51 is more stable to the heating of container 2, and the milk heating in container 2 is more even, and foaming effect is good, and the taste of milk bubble is good. Preferably, the ceramic heating sheet 51 is a PTC heating body, which has small thermal resistance, high heat exchange efficiency, and better energy saving performance, and meanwhile, the surface of the conventional heater does not become red, and the safety performance is good. By adopting the structure, the ceramic heating structure 5 for heating the container 2 is arranged in the shell 1, so that the milk in the container 2 is heated uniformly and is not easy to burn, and the energy is saved, and the cost is greatly reduced.

As shown in fig. 1, 4 to 5, a temperature detection device 6 that is in contact with the container 2 and detects the temperature of the container 2 is provided in the housing 1, and preferably, the temperature detection device 6 is a temperature sensor or a temperature sensor. In this embodiment, the temperature detection device 6 is a temperature sensor, and the temperature detection device 6 is disposed at the bottom of the container 2 near the ceramic heating sheet 51.

As shown in fig. 2, an energy storage device 7 for providing power to the driving device 4 is disposed in the housing 1, and the driving device 4 is electrically connected to the energy storage device 7. Preferably, the energy storage device 7 includes a battery pack or a mobile power source. In this embodiment, energy memory 7 adopts the group battery, has solved traditional milk bubble machine and has needed the power socket of connecting the strip power cord to use to the use that leads to and accomodate inconvenient problem. Meanwhile, a charging port 13 for charging the energy storage device 7 is arranged on the housing 1. Preferably, the charging port 13 is a MICRO-USB interface, and the protection member 14 is externally connected to the charging port 13 for safety.

As shown in fig. 2-3, a control structure 8 is connected to the energy storage device 7, and the control structure 8 includes a control circuit board 81 electrically connected to the energy storage device 7 and a switch button 82 for activating the control circuit board 81. Preferably, the control circuit board 81 is disposed in the housing 1, and the control circuit board 81 is a PCB; the switch button 82 is provided outside the housing 1. By adopting the structure, the control circuit board 81 is used for controlling the energy storage device 7 to release electric energy, so that the driving device 4 is started to drive the stirring assembly 3 to operate; the switch button 82 is used for controlling the connection or disconnection of the control circuit board 81 and the energy storage device 7.

As shown in fig. 3, the driving device 4 has a driving shaft 41, and one end of the driving shaft 41 facing the container 2 is connected to the stirring assembly 3. The stirring assembly 3 comprises a rotating shaft 31 inserted into the driving shaft 41, a stirring piece 32 sleeved on the rotating shaft 31, and a stirring spring 33 arranged on the outer edge of the stirring piece 32. Preferably, the stirring spring 33 is a spiral elastic member that is wound around the outer edge of the stirring member 32. Preferably, the stirring member 32 is provided with a groove 321 for mounting the rotating shaft 31, and the bottom of the container 2 is provided with a through hole (not shown) for receiving the rotating shaft 31 therethrough. Preferably, the stirring part 32 is in interference fit with the rotating shaft 31, so that the rotation of the rotating shaft 31 drives the stirring part 32 to rotate, and the stirring part 32 is not easy to separate. Above-mentioned structure can produce milk bubble fast to can stir evenly and improve the taste.

As shown in fig. 1, a bottom cover 11 is detachably mounted at the bottom of the housing 1, which is beneficial for detachment and installation of the milk foaming machine, and subsequent maintenance and replacement, a top cover 12 is disposed at the top of the housing 1, and a sealing ring 121 is disposed between the top cover 12 and the container 2. Preferably, the top cap 12 is extended toward one end of the container 2 to form a sealing end 122, the outer wall of the sealing end 122 is provided with the sealing ring 121, and the outer wall of the sealing ring 121 is in contact with the inner wall of the container 2. Due to the arrangement of the sealing ring 121, the sealing performance of the top cover 12 on the container 2 is enhanced, milk in the container 2 is prevented from splashing in the using process, meanwhile, the top cover 12 can be prevented from being separated from the container 2, and the safety is improved. Preferably, the container 2 is provided with a filling opening for adding milk, and the top cover 12 is arranged at the upper end of the filling opening of the container 2 and used for sealing the filling opening and preventing the milk from splashing in the operation process of the milk foaming machine.

As shown in fig. 1, 4-5, 7-10, more specifically, an energy storage fixing frame 71 for fixing the energy storage device 7 and a driving fixing frame 42 for fixing the driving device 4 are also arranged in the housing 1, and are matched with each other; one end of the energy storage fixing frame 71, which is far away from the driving fixing frame 42, is matched with the bottom cover 11, and one end of the driving fixing frame 42, which is far away from the energy storage fixing frame 71, is matched with the bottom of the container 2. Preferably, the container 2 is connected with the driving fixing frame 42 in a magnetic suspension manner. More specifically, the temperature detection device 6 is arranged at the bottom of the container 2, and an elastic member 61 is sleeved outside the temperature detection device 6; and, a mounting groove 421 for accommodating the temperature detection device 6 is formed in one side of the driving fixing frame 42 facing the container 2 in an extending manner. In this embodiment, one end of the driving fixing frame 42 is matched with the pressing plate 52, and the pressing plate 52 is provided with a through hole for installing the temperature detection device 6, through which the installation groove 421 of the driving fixing frame 42 passes, so that the temperature detection device 6 is in contact with the bottom of the container 2, thereby ensuring the accuracy of detecting the temperature of the milk in the container 2 by the temperature detection device 6. More specifically, the driving fixing frame 42 is a first annular body 425 having an opening near one end of the energy storage fixing frame 71, and a plurality of L-shaped supporting members 422 are formed by extending an outer wall of the first annular body 425 outward and toward the container 2; the energy storage fixing frame 71 is a second annular body 714 with an opening at one end, and openings for the energy storage device 7 to extend out are arranged at two opposite sides of the outer wall of the second annular body 714, so that the energy storage device 7 can be ensured to be in contact with the control circuit board 61 and the charging port 11, and the discharging and charging of the energy storage device 7 are realized; meanwhile, a supporting portion 711 is formed by extending the outer wall outwards, a circular truncated cone 712 which is exactly matched with the driving fixing frame 42 is formed by extending one end of the second ring-shaped body 714 close to the driving fixing frame 42 outwards, and a supporting platform 713 with a cross-shaped opening is arranged at the bottom of the circular truncated cone 712; the circular truncated cone 712 and the driving fixing frame 42 are combined to form a mounting cavity for mounting the driving device 4. Specifically, the L-shaped supporting members 422 are provided with through holes; a boss 423 with a through hole is formed by extending the outer wall of the driving fixing frame 42; the outer wall of the circular truncated cone 712 extends outwards to form two support columns 712-1 with through holes, wherein one support column 712-1 is matched with the boss 423, and the through hole of the support column 712-1 is communicated with the through hole of the boss 423; the other supporting post 712-1 is in contact with the L-shaped supporting member 422, and the L-shaped supporting member 422 is provided with a through hole communicating with the through hole of the supporting post 712-1. Preferably, any one of the L-shaped supporters 422 is provided with the mounting groove 421. More specifically, a cylinder 711-1 having a through hole is disposed in the support portion 711 of the energy storage fixing frame 71, an abutting column 111 contacting with the cylinder 711-1 is formed by extending the inner side of the bottom cover 8 upward, the abutting column 111 is provided with a through groove communicating with the through hole of the cylinder 711-1, two support frames 112 for supporting the energy storage device 7 are extended from the inner side of the bottom cover 8, and the two support frames 112 have arc-shaped recesses correspondingly disposed. Preferably, the upper end of the driving holder 42 has a through hole 424 for the driving shaft 41 of the driving device 4 to pass through.

Example two:

as shown in fig. 6, the present embodiment is different from the first embodiment in that the ceramic heating structure 5 includes a ceramic heating film covering the outer sidewall of the container 2, and the height of the ceramic heating film is in a range of 3-5 cm. Preferably, the ceramic heating film is a PTC heating body, so that the ceramic heating film is small in thermal resistance, high in heat exchange efficiency and more energy-saving, and meanwhile, the surface of the traditional heater is not reddened, and the safety performance is good. The ceramic heating film is arranged between the shell 1 and the container 2 and is tightly attached to the outer wall of the container 2, so that milk in the container 2 is uniformly heated, the foaming effect is good, and the milk foam has good taste. In this embodiment, the temperature detector 6 is a temperature sensor.

It should be noted that the ceramic heating structure 5 of the first embodiment is disposed at the bottom of the container 2, and the ceramic heating structure 5 of the second embodiment is covered on the outer sidewall of the container 2, but the technical solution of the present invention is not limited to that the ceramic heating structure 5 is only disposed at the bottom of the container 2 or covered on the outer sidewall of the container 2, and the ceramic heating structure 5 may be a structure covered on the outer sidewall and the bottom of the container 2.

The utility model discloses a theory of operation:

the switch button 82 is pressed, so that the control circuit board 81 is communicated with the energy storage device 7, the control circuit board 81 controls the energy storage device 7 to release electric energy, the driving device 4 is started, the driving shaft 41 of the driving device 4 drives the rotating shaft 31 of the stirring component 3 to rotate, the rotating shaft 31 drives the stirring piece 32 and the stirring spring 33 sleeved on the outer edge of the stirring piece 32 to rotate, and milk contained in the container 2 is stirred to foam.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A novel milk frother which is characterized in that: the novel milk foam machine comprises a shell (1), a container (2) which is arranged in the shell (1) and used for containing milk, a stirring component (3) which is arranged in the container (2), and a driving device (4) which is used for driving the stirring component (3) to move; and a ceramic heating structure (5) for heating the container (2) is arranged in the shell (1).

2. The novel milk frother of claim 1, characterized in that: the ceramic heating structure (5) is arranged at the bottom of the container (2); the ceramic heating structure (5) comprises a ceramic heating sheet (51) and a pressing plate (52), wherein the ceramic heating sheet (51) is arranged at the bottom of the container (2) and between the pressing plate (52).

3. The novel milk frother of claim 1, characterized in that: the ceramic heating structure (5) comprises a ceramic heating film covering the outer side wall of the container (2), and the height range of the ceramic heating film is 3-5 cm.

4. A novel milk frother as claimed in any one of claims 1 to 3, characterised in that: the shell (1) is internally provided with a temperature detection device (6) which is in contact with the container (2) and is used for detecting the temperature of the container (2).

5. The novel milk frother of claim 1, characterized in that: an energy storage device (7) for providing power for the driving device (4) is arranged in the shell (1), and the driving device (4) is electrically connected with the energy storage device (7).

6. The novel milk frother of claim 5, characterized in that: energy memory (7) are connected with control structure (8), control structure (8) including with control circuit board (81) that energy memory (7) electricity is connected with be used for triggering shift knob (82) of control circuit board (81).

7. The novel milk frother of claim 1, characterized in that: the drive device (4) has a drive shaft (41), and one end of the drive shaft (41) facing the container (2) is connected to the stirring assembly (3).

8. The novel milk frother of claim 7, characterized in that: the stirring assembly (3) comprises a rotating shaft (31) inserted into the driving shaft (41), a stirring piece (32) sleeved on the rotating shaft (31), and a stirring spring (33) arranged at the outer edge of the stirring piece (32).

9. The novel milk frother of claim 1, characterized in that: the bottom of the shell (1) is detachably provided with a bottom cover (11), the top of the shell (1) is provided with a top cover (12), and a sealing ring (121) is arranged between the top cover (12) and the container (2).

10. The novel milk frother of claim 5, characterized in that: an energy storage fixing frame (71) used for fixing the energy storage device (7) and a driving fixing frame (42) used for fixing the driving device (4) which are matched with each other are also arranged in the shell (1);

the driving fixing frame (42) comprises a first annular body (425) with an opening arranged at one end close to the energy storage fixing frame (71), and a plurality of L-shaped supporting pieces (422) are formed by extending the outer wall of the first annular body (425) outwards and towards the direction of the container (2);

the energy storage fixing frame (71) comprises a second annular body (714) with an opening at one end, two opposite sides of the outer wall of the second annular body (714) are provided with openings from which the energy storage devices (7) extend, meanwhile, the outer wall extends outwards to form a supporting part (711), one end, close to the driving fixing frame (42), of the second annular body (714) extends outwards to form a circular table (712) which is just matched with the driving fixing frame (42), and the bottom of the circular table (712) is provided with a supporting table (713) with a cross-shaped opening;

the round platform (712) and the driving fixing frame (42) are combined to form an installation cavity for installing the driving device (4).