CN219355932U - Material mixing device - Google Patents

Abstract

The utility model discloses a material mixing device, which comprises a material cylinder, a first feeding component, a second feeding component, a stirring component, an air inlet pipe and a safety valve, wherein the first feeding component is communicated with the material cylinder and is used for feeding materials; the second feeding component is communicated with the material cylinder and is used for feeding additives; the stirring assembly extends into the material cylinder and is used for stirring the mixed materials and the additives; the air inlet pipe is used for introducing sterile air into the material cylinder, and an air inlet valve is arranged on the air inlet pipe; the safety valve is installed with the material jar intercommunication, and the safety valve is used for maintaining the pressure of material jar invariable. The material mixing device continuously introduces sterile air into the material cylinder through the air inlet pipe, and when the pressure in the material cylinder exceeds a set value, the sterile air is discharged through the safety valve, so that the constant pressure in the material cylinder and the sterile environment are ensured, negative pressure suction foreign matters generated in the stirring and mixing process are avoided, and the material mixing process and the sterility of products are ensured.

Description

Material mixing device

Technical Field

The utility model relates to the technical field of food production and processing, in particular to a material mixing device.

Background

In the process of food and beverage processing, to achieve a specific process formula, multiple materials often need to be mixed and stirred. In the existing production process, the materials are mixed mainly in the following modes: the manual feeding and mixing are high in labor cost consumption, low in mixing efficiency and extremely prone to uneven mixing; the self-priming pump mixing system fully mixes and inputs materials through high-speed rotation shearing of the impeller, the method realizes mixing through negative pressure adsorption of the materials, the risk that foreign matters are inhaled into a reaction chamber to cause the materials to be polluted exists, and the components of the materials can be damaged by the high-speed shearing; the static mixer is used for cutting and shearing the fluid layer by layer through the fixed mixing unit and then remixing the fluid, so that the method has the advantages of shorter mixing time, uneven diffusion and low mixing efficiency.

Therefore, it is desirable to provide a material mixing device that is uniform and stable in mixed product and is not prone to contamination.

Disclosure of Invention

In order to solve at least one of the above technical problems, the utility model provides a material mixing device, which adopts the following technical scheme:

the material mixing device comprises a material cylinder, a first feeding assembly, a second feeding assembly, a stirring assembly, an air inlet pipe and a safety valve, wherein the first feeding assembly is communicated with the material cylinder and is used for feeding materials; the second feeding component is communicated with the material cylinder and is used for feeding additives; the stirring assembly stretches into the material cylinder and is used for stirring the mixed materials and the additives; the air inlet pipe is used for introducing sterile air into the material cylinder, and an air inlet valve is arranged on the air inlet pipe; the safety valve is communicated with the material cylinder, and is used for maintaining the constant pressure of the material cylinder.

In certain embodiments of the present utility model, the first feed assembly comprises a first feed tube in communication with the material cylinder and a first feed valve disposed on the first feed tube.

In certain embodiments of the present utility model, the second feed assembly comprises a second feed tube and a second feed valve, the second feed tube opening in a direction toward the inner wall of the material cylinder, the second feed valve being disposed on the second feed tube.

In some embodiments of the utility model, a detachable connection structure is arranged at one end of the second feeding pipe far away from the material cylinder, so as to connect the additive tank to facilitate feeding of the additive.

In certain embodiments of the utility model, the second feed assembly comprises a rotor pump for smooth output of high viscosity additive to the material cylinder, the rotor pump being disposed on the second feed tube.

In some embodiments of the utility model, the stirring assembly comprises a driving piece and a plurality of stirring blades, wherein the driving piece is connected with each stirring blade through a stirring shaft, and drives the stirring shaft to rotate so as to drive the stirring blades to mix the materials and additives in the material cylinder.

In certain embodiments of the utility model, the material mixing apparatus comprises a CIP cleaning system comprising a first cleaning tube in communication with the material bowl and a second cleaning tube in communication with the first cleaning tube at one end and removably connected to the second feed assembly at the other end.

In some embodiments of the utility model, the CIP cleaning system comprises a spray pipe, wherein the spray pipe is communicated with the material cylinder, a spray ball is arranged at one end of the spray pipe extending into the material cylinder, the spray ball is provided with a plurality of small holes, and the spray ball can rotate.

In some embodiments of the utility model, a material inlet for adding solid materials is arranged at the top of the material cylinder, and a cover plate is correspondingly arranged at the material inlet.

In some embodiments of the present utility model, the material mixing device includes a control component, the control component is electrically connected with the first feeding component, the control component is electrically connected with the second feeding component, the control component is electrically connected with the air inlet valve, and the control component is electrically connected with the stirring component.

The embodiment of the utility model has at least the following beneficial effects: the material mixing device continuously introduces sterile air into the material cylinder through the air inlet pipe, when the pressure in the material cylinder exceeds a set value, the sterile air is discharged through the safety valve, so that the constant pressure in the material cylinder and the sterile environment are ensured, negative pressure suction foreign matters generated in the material stirring and mixing process are avoided, the sterility of the material mixing process and products is ensured, and the material mixing device is simple and reliable in structure and can be widely applied to the technical field of food production and processing.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of a material mixing apparatus;

FIG. 2 is a schematic view of a material cylinder in the material mixing apparatus provided in FIG. 1;

fig. 3 is a schematic view of the material mixing device provided in fig. 1 in a cleaning state.

Reference numerals: 100. a material cylinder; 210. an air inlet pipe; 211. an intake valve; 212. a safety valve; 220. a cover plate; 310. a first feed tube; 311. a first feed valve; 320. a second feed tube; 321. a second feed valve; 322. a third feed valve; 323. a rotor pump; 324. a drain valve; 410. a first cleaning tube; 420. a second cleaning tube; 421. a first purge valve; 430. a bypass pipe; 431. a manual adjustment valve; 440. a shower pipe; 441. spraying balls; 500. a stirring assembly; 510. a driving member; 520. a stirring shaft; 521. stirring blades; 600. and a control assembly.

Detailed Description

Embodiments of the present utility model are described in detail below in conjunction with fig. 1-3, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functionality throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that, if the terms "center", "middle", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are used as directions or positional relationships based on the directions shown in the drawings, the directions are merely for convenience of description and for simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Features defining "first", "second" are used to distinguish feature names from special meanings, and furthermore, features defining "first", "second" may explicitly or implicitly include one or more such features. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the process of food and beverage processing, to achieve a specific process formula, multiple materials often need to be mixed and stirred. In the existing production process, the materials are mixed mainly in the following modes: the manual feeding and mixing are high in labor cost consumption, low in mixing efficiency and extremely prone to uneven mixing; the self-priming pump mixing system fully mixes and inputs materials through high-speed rotation shearing of the impeller, the method realizes mixing through negative pressure adsorption of the materials, the risk that foreign matters are inhaled into a reaction chamber to cause the materials to be polluted exists, and the components of the materials can be damaged by the high-speed shearing; the static mixer is used for cutting and shearing the fluid layer by layer through the fixed mixing unit and then remixing the fluid, so that the method has the advantages of shorter mixing time, uneven diffusion and low mixing efficiency.

The utility model relates to a material mixing device, which comprises a material cylinder 100, a first feeding component, a second feeding component, a stirring component 500, an air inlet pipe 210 and a safety valve 212, wherein the first feeding component is communicated with the material cylinder 100 and is used for feeding materials; a second feed assembly is in communication with the material cylinder 100, the second feed assembly for additive feed; the stirring assembly 500 extends into the material cylinder 100, and the stirring assembly 500 is used for stirring the mixed material and the additive; the air inlet pipe 210 is used for introducing sterile air into the material cylinder 100, and an air inlet valve 211 is arranged on the air inlet pipe 210; a relief valve 212 is mounted in communication with the material cylinder 100, the relief valve 212 being adapted to maintain the pressure of the material cylinder 100 constant. The material mixing device continuously introduces sterile air into the material cylinder 100 through the air inlet pipe 210, and when the pressure in the material cylinder 100 exceeds a set value, the sterile air is discharged through the safety valve 212, so that the constant pressure in the material cylinder 100 and the sterile environment are ensured, negative pressure suction foreign matters generated in the material stirring and mixing process are avoided, the sterility of the material mixing process and products is ensured, and the material mixing device is simple and reliable in structure and can be widely applied to the technical field of food production and processing.

In connection with the figures, the first feed assembly comprises a first feed pipe 310, the first feed pipe 310 being in communication with the material cylinder 100. In this embodiment, the first feeding pipe 310 performs the functions of inputting materials into the material cylinder 100 and outputting products after mixing in the material cylinder 100, specifically, the first feeding pipe 310 is communicated with the bottommost part of the material cylinder 100, so that the products in the material cylinder 100 after mixing are output, foam is avoided in the material feeding process, and the flavor and stability of the products are ensured.

It will be appreciated that the first feed pipe 310 is provided with a first feed valve 311, the first feed valve 311 being used to control the feed of material or the discharge of product. In this embodiment, the first feed valve 311 is provided as a pneumatic valve to control the opening and closing of the first feed pipe 310. It will be appreciated that the first feed valve 311 may also be provided in other forms such as a butterfly valve to control the flow rate of the feed of material or the discharge of product.

Referring to the drawings, the second feed assembly includes a second feed pipe 320, one end of which is connected to the additive tank and the other end of which is connected to the inside of the cylinder 100. Specifically, taking a double-skin milk production process as an example, milk enters the material jar 100 through the first feeding assembly, and egg liquid enters the material jar 100 through the second feeding tube 320. In this embodiment, the opening direction of the second feed pipe 320 is oriented toward the inner wall of the material cylinder 100, so that the additive, after exiting the second feed pipe 320, falls down along the inner wall of the material cylinder 100 until merging with the material. It will be appreciated that the second feed tube 320 opens toward the inner wall of the jar 100 to prevent the eggs from directly falling into the jar to create foam, thereby ensuring product flavor and stability.

It will be appreciated that a second feed valve 321 is provided on the second feed tube 320, the second feed valve 321 being used to control the feed of additives. In this embodiment, the second feeding valve 321 is configured as a butterfly valve, and the feeding speed of the additive can be adjusted according to the process while controlling whether the additive is fed or not.

Further, the end of the second feed tube 320 remote from the cylinder 100 is provided with a detachable connection structure to connect an additive tank for feeding of additives. In this embodiment, the end of the second feed tube 320 remote from the cylinder 100 is threaded to facilitate a sealed connection to the additive tank. It will be appreciated that the connection structure may also be provided as a snap-fit or otherwise.

Specifically, in this embodiment, the end portion of the second feeding tube 320 for connecting the additive tank is further provided with a saw-tooth structure along the tube circumference, so that the egg membrane is pierced when connecting the additive tank, and the egg liquid flows into the material cylinder 100 through the second feeding tube 320.

Further, the second feed assembly includes a rotor pump 323, the rotor pump 323 being for smoothly outputting the high viscosity additive to the material cylinder 100, the rotor pump 323 being provided on the second feed pipe 320. It will be appreciated that the rotor pump 323 is of low rotational speed and strong self priming capability and is suitable for delivering high viscosity additives. In this embodiment, the rotor pump 323 can make the egg liquid be conveyed into the material jar 100 smoothly without damaging the component structure, and ensure the flavor and stability of the product.

In some embodiments, the second feeding assembly further comprises a third feeding valve 322, the third feeding valve 322 is opened or closed synchronously with the rotor pump 323, the third feeding valve 322 is matched with the flow meter for use, when the flow meter detects that the feeding flow rate of the additive is lower than a set value, namely, the egg liquid box is judged to be close to be evacuated, the rotor pump 323 and the third feeding valve 322 are closed, feeding of the additive is stopped, and the feeding of the additive is restored after the additive box is waited to be replaced.

Specifically, in this embodiment, the first feeding pipe 310, the second feeding pipe 320, and the first cleaning pipe 410 are respectively provided with a flowmeter to monitor the pipeline flow in real time.

In some embodiments, the material mixing device includes a land valve 324, the land valve 324 for discharging residual additive between the rotor pump 323 and the third feed valve 322. In this embodiment, the drain valve 324 is provided as a pneumatic butterfly valve.

Referring to the drawings, the stirring assembly 500 comprises a driving member 510 and a plurality of stirring blades 521, wherein the driving member 510 is connected with each stirring blade 521 through a stirring shaft 520, and the driving member 510 drives the stirring shaft 520 to rotate so as to drive the stirring blades 521 to mix materials and additives in the material cylinder 100. In this embodiment, the driving member 510 is configured as a motor, and the motor drives the stirring shaft 520 to rotate at a constant speed, so as to uniformly mix the milk and the egg liquid in the material jar 100.

Further, the material mixing device comprises a CIP cleaning system, the CIP cleaning system comprises a first cleaning pipe 410 and a second cleaning pipe 420, the first cleaning pipe 410 is communicated with the material cylinder 100, one end of the second cleaning pipe 420 is communicated with the first cleaning pipe 410, and the other end of the second cleaning pipe 420 is detachably connected with the second feeding component. Specifically, in conjunction with the drawing, the cleaning liquid is introduced into the first cleaning pipe 410 and is divided into two paths, one path of the cleaning liquid is introduced into the material cylinder 100, and the other path of the cleaning liquid is transported to the second feeding pipe 320 through the second cleaning pipe 420, so that the second feeding pipe 320 is flooded to clean the additive feeding pipe. In this embodiment, the second cleaning pipe 420 is detachably connected to the second feeding pipe 320, specifically, when the material mixing device needs cleaning, the second feeding pipe 320 is disconnected from the additive tank, and the second cleaning pipe 420 is connected to the second feeding pipe 320 to fill the additive feeding pipe with the cleaning liquid.

Specifically, the CIP cleaning system includes a first cleaning valve 421, and in combination with the drawings, the first cleaning valve 421 is disposed on the second cleaning pipe 420 for controlling the flow of cleaning fluid from the first cleaning pipe 410 to the second cleaning pipe 420. In this embodiment, the first cleaning valve 421 is a pneumatic butterfly valve, and can control the flow rate of the cleaning liquid while controlling the circulation of the cleaning liquid.

Further, the CIP cleaning system includes a shower pipe 440, the shower pipe 440 is communicated with the material cylinder 100, and in combination with the drawings, in this embodiment, two shower pipes 440 are provided, and the two shower pipes 440 are uniformly arranged on the top of the material cylinder 100. Specifically, a spray ball 441 is disposed at one end of the spray pipe 440 extending into the material cylinder 100, the spray ball 441 is provided with a plurality of small holes, and the spray ball 441 is rotatable. In the spraying process, the rotary spraying ball 441 can uniformly spray the cleaning liquid at all corners in the material cylinder 100, so as to improve the cleaning effect.

Taking a specific cleaning procedure as an example, it should be noted that this embodiment is only illustrative and not a specific limitation of the utility model:

opening the drain valve 324 to drain the residual additive from the rotor pump 323 to the middle of the third feed valve 322;

removing the connection between the second feed pipe 320 and the additive tank, and communicating the second feed pipe 320 with the second purge pipe 420;

closing the air inlet valve 211, enabling clean water to enter the material tank 100 from the first feeding pipe 310, enabling cleaning liquid to be sprayed into the material tank 100 from the spraying system through the first cleaning pipe 410, and enabling the cleaning liquid to clean the additive pipeline through the second feeding pipe 320;

starting the stirring assembly 500 to drive the cleaning liquid in the material cylinder 100 to move, flushing residues in the cylinder, and thoroughly cleaning the material cylinder 100;

after the cleaning is completed, the air inlet valve 211 is opened, the cleaning solution in the material cylinder 100 is discharged from the first feeding pipe 310, the ground discharge valve 324 is opened, the residual cleaning solution in the additive pipeline is discharged, and the above cleaning steps are repeated until the cleaning requirement is reached.

In some embodiments, the CIP cleaning system includes a bypass pipe 430, and in conjunction with the figures, the bypass pipe 430 communicates at one end with the input of the rotor pump 323 and at the other end with the output of the rotor pump 323. It will be appreciated that when the purge flow is greater than the rated value of the rotor pump 323, the purge fluid will flow to the bypass pipe 430, avoiding damage to the rotor pump 323. Specifically, the bypass pipe 430 is correspondingly provided with a manual adjusting valve 431 for adjusting the bypass flow.

It may be appreciated that in some embodiments, the material mixing apparatus further includes a control component 600, where the control component 600 is electrically connected to the first feeding component, the control component 600 is electrically connected to the second feeding component, the control component 600 is electrically connected to the air inlet valve 211, the control component 600 is electrically connected to the stirring component 500, and the control component 600 may be a single-chip microcomputer, a PLC, a microcomputer, or other devices. In some embodiments, the control assembly 600 is electrically connected to each electrical element of the material mixing device, so as to implement the full-automatic operation of the material mixing device.

In some embodiments, a liquid level sensor is installed in the material cylinder 100 and is electrically connected to the control assembly 600, it can be understood that when the liquid level sensor detects that the liquid level in the material cylinder 100 meets a preset value, a signal is transmitted to the control assembly 600, and then the control assembly 600 closes the first feeding assembly and the second feeding assembly, opens the stirring assembly 500, and starts stirring and mixing the materials in the cylinder.

In some embodiments, a material inlet for adding solid material is provided at the top of the material cylinder 100, and a cover plate 220 is correspondingly provided at the material inlet. It will be appreciated that when the production process requires mixing of solid and liquid materials, the liquid material enters the cylinder 100 from the first feed tube 310 and the solid material enters the cylinder 100 from the feed port. Providing a feed port also facilitates instant viewing of conditions within the material cylinder 100 during production.

Based on the material mixing device provided by the utility model, the material mixing method comprises the following steps:

opening the air inlet valve 211 to fill the material cylinder 100 with sterile air, and keeping the material cylinder 100 in a positive pressure state;

when the pressure in the material cylinder 100 reaches a first preset pressure, starting a first feeding component to input materials into the material cylinder 100;

opening the second feeding assembly to input additives into the material cylinder 100, and then opening the stirring assembly 500 to uniformly mix the materials in the material cylinder 100 with the additives, wherein in the mixing process, the air inlet valve 211 keeps an open state to continuously input sterile air into the material cylinder 100;

and opening the first feeding assembly, and conveying the mixed product to the next process.

In the following, the utility model is described in detail with reference to a specific embodiment, it being noted that the following description is merely illustrative and not a specific limitation of the utility model. Taking the production process of double-skin milk as an example, the material is milk, the additive box is an egg liquid box, and a film for containing egg liquid is arranged in the box:

opening the air inlet valve 211 to enable sterile air to fill the material cylinder 100, keeping the material cylinder 100 in a positive pressure state, and discharging the sterile air from the safety valve 212 to the material cylinder 100 when the pressure exceeds a preset value;

opening the first feeding valve 311, allowing milk to enter the material cylinder 100 from the first feeding pipe 310, and when a liquid level sensor in the material cylinder 100 detects that the milk reaches a preset liquid level, feeding back a signal to the control assembly 600, and closing the first feeding valve 311 by the control assembly 600 to stop feeding the milk;

the second feeding pipe 320 is in threaded sealing connection with the additive box, the sawtooth structure punctures the film to enable egg liquid to flow into the second feeding pipe 320, the second feeding valve 321, the rotor pump 323 and the third feeding valve 322 are opened, the egg liquid is conveyed into the material cylinder 100 through the second feeding pipe 320, and the egg liquid flows in along the inner wall of the material cylinder 100;

after the rotor pump 323 is started, the driving piece 510 is started to drive the stirring shaft 520 and the stirring impeller to rotate at a constant speed, so that milk and egg liquid in the mixed material jar 100 are continuously stirred;

after the stirring is completed, the first feeding valve 311 is opened, the egg liquid and milk mixture flows out from the first feeding pipe 310 to the next process equipment, when the liquid level sensor detects that the mixture in the material cylinder 100 is completely discharged, a signal is fed back to the control component 600, and the control component 600 closes the first feeding valve 311, so that the process of material mixing is completed.

In the description of the present specification, if a description appears that makes reference to the term "one embodiment," "some examples," "some embodiments," "an exemplary embodiment," "an example," "a particular example," or "some examples," etc., it is intended that the particular feature, structure, material, or characteristic described in connection with the embodiment or example be included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (10)

1. A material mixing device, comprising:

a material cylinder (100);

a first feed assembly in communication with the material cylinder (100), the first feed assembly for material feed;

a second feed assembly in communication with the material cylinder (100), the second feed assembly for additive feed;

a stirring assembly (500), wherein the stirring assembly (500) extends into the material cylinder (100), and the stirring assembly (500) is used for stirring the mixed material and the additive;

the air inlet pipe (210) is used for introducing sterile air into the material cylinder (100), and an air inlet valve (211) is arranged on the air inlet pipe (210);

and the safety valve (212) is arranged in communication with the material cylinder (100), and the safety valve (212) is used for maintaining the pressure of the material cylinder (100) constant.

2. The material mixing device of claim 1, wherein: the first feeding assembly comprises a first feeding pipe (310) and a first feeding valve (311), the first feeding pipe (310) is communicated with the material cylinder (100), and the first feeding valve (311) is arranged on the first feeding pipe (310).

3. The material mixing device of claim 2, wherein: the second feeding assembly comprises a second feeding pipe (320) and a second feeding valve (321), the opening direction of the second feeding pipe (320) faces the inner wall of the material cylinder (100), and the second feeding valve (321) is arranged on the second feeding pipe (320).

4. A material mixing device according to claim 3, wherein: and a detachable connecting structure is arranged at one end of the second feeding pipe (320) away from the material cylinder (100) so as to be connected with an additive box to facilitate feeding of additives.

5. The material mixing device of claim 4, wherein: the second feed assembly comprises a rotor pump (323), the rotor pump (323) is used for smoothly outputting the additive with high viscosity to the material cylinder (100), and the rotor pump (323) is arranged on the second feed pipe (320).

6. The material mixing device of claim 1, wherein: the stirring assembly (500) comprises a driving piece (510) and a plurality of stirring blades (521), the driving piece (510) is connected with each stirring blade (521) through a stirring shaft (520), and the driving piece (510) drives the stirring shafts (520) to rotate so as to drive the stirring blades (521) to mix materials and additives in the material cylinder (100).

7. The material mixing device of claim 1, wherein: the material mixing device comprises a CIP cleaning system, the CIP cleaning system comprises a first cleaning pipe (410) and a second cleaning pipe (420), the first cleaning pipe (410) is communicated with the material cylinder (100), one end of the second cleaning pipe (420) is communicated with the first cleaning pipe (410), and the other end of the second cleaning pipe is detachably connected with the second feeding component.

8. The material mixing device of claim 7, wherein: CIP cleaning system includes shower (440), shower (440) with material jar (100) intercommunication, shower (440) stretch into one end of material jar (100) is provided with spray ball (441), a plurality of apertures have been seted up to spray ball (441), spray ball (441) rotatable.

9. The material mixing device of claim 7, wherein: the top of the material cylinder (100) is provided with a material inlet for adding solid materials, and the material inlet is correspondingly provided with a cover plate (220).

10. The material mixing device according to any one of claims 1 to 9, wherein: the material mixing device comprises a control assembly (600), wherein the control assembly (600) is electrically connected with the first feeding assembly, the control assembly (600) is electrically connected with the second feeding assembly, the control assembly (600) is electrically connected with the air inlet valve (211), and the control assembly (600) is electrically connected with the stirring assembly (500).