Milk conveying device of coffee machine

Abstract

The invention provides a coffee machine milk conveying device, and relates to the technical field of beverage machine milk conveying devices.The coffee machine milk conveying device comprises a mounting base, a mounting groove is formed in the upper surface of the mounting base, the inner wall surface of the mounting groove is rotationally connected with a lead screw body through a bearing, and the outer surface of the lead screw body is in threaded connection with a lead screw sleeve; the upper surface of the lead screw sleeve is fixedly connected with a push plate. The screw rod sleeve drives the push plate to get close to the backup plate and extrude the milk box under the action of the threads, the volume in the milk box is reduced, the pressure is increased, milk is added into the coffee machine through the insertion pipe and the milk conveying pipe, and no air enters the milk box, a milk pipeline and a milk pump in the milk conveying process; the milk can be kept at normal temperature without refrigeration, the fusion of the milk and coffee and the temperature of the coffee are not influenced, the good taste is ensured, refrigeration equipment is omitted, the product cost and the operation and maintenance cost are reduced, and the milk maker is green and energy-saving and does not occupy the counter area.

Description

Technical Field

[0001] The invention relates to the technical field of milk conveying devices for beverage machines, and in particular to a milk conveying device for a coffee machine. Background Art

[0002] The coffee machines currently sold in the market are generally equipped with a milk preparation function, so a milk box is required to provide milk for the coffee machine. As we all know, milk is a drink that is extremely easy to spoil. In order to extend the shelf life of milk, it is generally only possible to use a refrigeration method, that is, to equip each coffee machine with a small electronic refrigeration refrigerator to refrigerate and preserve the milk stored in the refrigerator. Despite this, the refrigeration preservation method still has its insurmountable problems.

[0003] However, in the prior art, the coffee machine uses a suction milk pump to pump the milk in the milk box into the coffee machine. While the milk is being pumped, an equal volume of air containing a large amount of bacteria enters the milk box and mixes with the milk. Although the milk box is in a refrigeration device, the bacteria entering the milk multiply more slowly due to the low temperature. However, the milk entering and remaining in the milk pipeline and the milk pump will multiply rapidly due to the lack of protection from the low temperature environment, and will also enter the milk box by backflow, causing the milk to deteriorate. Moreover, the temperature of the coffee is a very important taste indicator. For example, pouring the very low temperature milk after refrigeration into boiling coffee will directly affect the dissolution of the milk and the coffee, lower the temperature of the coffee, and affect the taste. In addition, the procurement and operation and maintenance costs of the refrigeration equipment are high, and it will also occupy site area when in use, which is defective. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that in the prior art, a coffee machine uses a suction milk pump to pump the milk in a milk box into the coffee machine. While the milk is being pumped, an equal volume of air containing a large amount of bacteria from the outside also enters the milk box and is mixed with the milk. Although the milk box is in a refrigeration device, the bacteria entering the milk will multiply more slowly due to the effect of the low temperature. However, the milk entering and remaining in the milk pipeline and the milk pump will multiply rapidly due to the lack of protection from the low temperature environment, and will also enter the milk box by backflow, causing the milk to deteriorate. Moreover, the temperature of the coffee is a very important taste indicator. For example, pouring the milk with a very low temperature after refrigeration into boiling coffee will directly affect the dissolution of the milk and the coffee, reduce the temperature of the coffee, and affect the taste. In addition, the purchase and operation and maintenance costs of the refrigerator are high, and it will also occupy site area when in use. There are technical problems such as defects. Therefore, a milk conveying device for a coffee machine is proposed.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a milk delivery device for a coffee machine, comprising a mounting seat, a mounting groove is formed on the upper surface of the mounting seat, a screw body is rotatably connected to the inner wall surface of the mounting groove through a bearing, a screw sleeve is threadedly connected to the outer surface of the screw body, a push plate is fixedly connected to the upper surface of the screw sleeve, a motor is fixedly connected to one side surface of the mounting seat, the output end of the motor is fixedly connected to one end of the screw body, and a support plate is fixedly connected to the upper surface of the mounting seat.

[0006] Furthermore, a damper is fixedly connected to one side surface of the push plate, one end of the damper is fixedly connected to a pressure plate, a spring is fixedly connected to one side surface of the pressure plate, and one end of the spring is fixedly connected to the outer surface of the push plate.

[0007] Furthermore, the inner wall surface of the spring is sleeved on the outer surface of the damper.

[0008] Furthermore, the inner wall surface of the installation groove is provided with two limiting slide grooves, the inner wall surfaces of the two limiting slide grooves are both slidably embedded with limiting sliders, and one side surface of the two limiting sliders is fixedly connected to the outer surface of the screw sleeve.

[0009] Furthermore, the opposing surfaces of the pressure plate and the backing plate are provided with a plurality of grooves, and rubber strips are embedded inside the plurality of grooves.

[0010] Furthermore, the plurality of grooves are distributed at equal intervals.

[0011] Compared with the prior art, the advantages and positive effects of the present invention are:

[0012] 1. In the present invention, when in use, the insertion tube connected to the upper end of the milk box is connected to the milk delivery tube through a quick connector, and then the milk box is placed on the upper surface of the mounting seat. When milk needs to be added, the motor drives the screw rod body to rotate through the bearing, and the push plate provides a supporting force for the screw rod sleeve, so that the screw rod sleeve drives the push plate close to the support plate under the action of the thread, squeezes the milk box, and the volume inside the milk box is reduced, and the pressure is increased, so that the milk is added to the coffee machine through the insertion tube and the milk delivery tube. During the milk delivery process, no air enters the milk box, the milk pipeline and the milk pump, and the quality of milk can be preserved without refrigeration. The milk is kept at room temperature, which does not affect the dissolution of milk and coffee and the temperature of coffee, and ensures a good taste. The refrigeration equipment is eliminated, the product cost and operation and maintenance costs are reduced, and it is green and energy-saving, and does not occupy the counter area.

[0013] 2. In the present invention, when the push plate moves, the pressure plate squeezes the milk box, and the rubber strips embedded in the multiple grooves equidistantly distributed inside fit with the milk box, evenly increasing the friction force to prevent the milk box from shifting after being subjected to force. The damper and the spring compress the stroke when the pressure plate squeezes the milk box to absorb kinetic energy and provide buffering to prevent the milk box from being damaged by excessive pressure and ensure normal milk extrusion. When the spring is subjected to a lateral force, the damper prevents the spring from bending to ensure the normal operation of the spring. When the screw sleeve moves, the two limit sliders slide inside the two limit slide grooves to prevent the push plate from rotating and rubbing against the upper surface of the mounting seat, thereby ensuring the stability of the structure and increasing the service life of components. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the three-dimensional structure of a milk delivery device for a coffee machine provided by the present invention;

[0015] Figure 2 A schematic cross-sectional three-dimensional structure diagram of a mounting base for a coffee machine milk delivery device provided by the present invention;

[0016] Figure 3 A schematic diagram of the three-dimensional structure of a damper of a milk delivery device of a coffee machine provided by the present invention;

[0017] Figure 4 A schematic top view of the three-dimensional structure of a pressing plate of a milk delivery device of a coffee machine provided by the present invention.

[0018] Legend: 1. Mounting seat; 2. Mounting groove; 3. Screw body; 4. Limit slide groove; 5. Motor; 6. Back plate; 7. Push plate; 8. Pressure plate; 9. Rubber strip; 10. Damper; 11. Spring; 12. Screw sleeve; 13. Limit slide block; 14. Groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example 1

[0021] like Figure 1-4As shown, the present invention provides a technical solution: a milk delivery device for a coffee machine, comprising a mounting seat 1, a mounting groove 2 is formed on the upper surface of the mounting seat 1, a screw body 3 is rotatably connected to the inner wall surface of the mounting groove 2 through a bearing, a screw sleeve 12 is threadedly connected to the outer surface of the screw body 3, a push plate 7 is fixedly connected to the upper surface of the screw sleeve 12, a motor 5 is fixedly connected to the surface of one side of the mounting seat 1, an output end of the motor 5 is fixedly connected to one end of the screw body 3, and a backing plate 6 is fixedly connected to the upper surface of the mounting seat 1.

[0022] In this embodiment, when in use, the insertion tube connected to the upper end of the milk box is connected to the milk delivery tube through a quick connector, and then the milk box is placed on the upper surface of the mounting base 1. When milk needs to be added, the motor 5 drives the screw body 3 to rotate through the bearing, and the push plate 7 provides a supporting force for the screw sleeve 12, so that the screw sleeve 12 drives the push plate 7 close to the support plate 6 under the action of the thread, squeezes the milk box, and the volume inside the milk box is reduced, and the pressure is increased, so that the milk is added to the coffee machine through the insertion tube and the milk delivery tube. During the milk delivery process, no air enters the milk box, the milk pipeline and the milk pump, so that the quality of milk can be preserved without refrigeration. The milk is kept at room temperature, which does not affect the dissolution of milk and coffee and the temperature of coffee, ensuring a good taste, eliminating refrigeration equipment, reducing product costs and operation and maintenance costs, being green and energy-saving, and not occupying counter area. The motor 5 is a common device in life, and a specific model can be selected according to needs, which will not be described in detail here.

[0023] Example 2

[0024] like Figure 1-4 As shown, a damper 10 is fixedly connected to one side surface of the push plate 7, one end of the damper 10 is fixedly connected to a pressure plate 8, a spring 11 is fixedly connected to one side surface of the pressure plate 8, one end of the spring 11 is fixedly connected to the outer surface of the push plate 7, the inner wall surface of the spring 11 is sleeved on the outer surface of the damper 10, two limiting slide grooves 4 are provided on the inner wall surface of the mounting groove 2, limiting sliders 13 are slidably embedded in the inner wall surfaces of the two limiting slide grooves 4, one side surface of the two limiting sliders 13 is fixedly connected to the outer surface of the screw sleeve 12, a plurality of grooves 14 are provided on the opposing surfaces of the pressure plate 8 and the back plate 6, rubber strips 9 are embedded in the interiors of the plurality of grooves 14, and the plurality of grooves 14 are equidistantly distributed.

[0025] In this embodiment, when the push plate 7 moves, the pressure plate 8 squeezes the milk carton, and the multiple grooves 14 equidistantly distributed inside the embedded rubber strip 9 fit with the milk carton, evenly increasing the friction force to prevent the milk carton from shifting after being subjected to force. The damper 10 and the spring 11 compress the stroke when the pressure plate 8 squeezes the milk carton, absorb kinetic energy, provide buffering, and prevent the milk carton from being damaged by excessive pressure, thereby ensuring normal milk extrusion. When the spring 11 is subjected to a lateral force, the damper 10 prevents the spring 11 from bending, thereby ensuring the normal operation of the spring 11. When the screw sleeve 12 moves, the two limit sliders 13 slide inside the two limit slide grooves 4 to prevent the push plate 7 from rotating and rubbing against the upper surface of the mounting seat 1, thereby ensuring the stability of the structure and increasing the service life of components.

[0026] Working principle: Figure 1-4 As shown, when in use, the insertion tube connected to the upper end of the milk box is connected to the milk delivery tube through a quick connector, and then the milk box is placed on the upper surface of the mounting seat 1. When milk needs to be added, the motor 5 drives the screw body 3 to rotate through the bearing, and the push plate 7 provides support for the screw sleeve 12, so that the screw sleeve 12 drives the push plate 7 close to the support plate 6 under the action of the thread, and the pressing plate 8 squeezes the milk box. The rubber strips 9 embedded inside the multiple grooves 14 are evenly distributed and fit with the milk box. The volume inside the milk box is reduced and the pressure is increased, so that the milk is added to the coffee machine through the insertion tube and the milk delivery tube. The damper 10 and the spring 11 compress the stroke when the pressing plate 8 squeezes the milk box to absorb kinetic energy. When the spring 11 is subjected to a lateral force, the damper 10 prevents the spring 11 from bending. When the screw sleeve 12 moves, the two limit sliders 13 slide inside the two limit slide grooves 4 to prevent the push plate 7 from rotating and fitting and rubbing against the upper surface of the mounting seat 1.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A milk delivery device for a coffee machine, comprising a mounting seat (1), Features: The upper surface of the mounting seat (1) is provided with a mounting groove (2), the inner wall surface of the mounting groove (2) is rotatably connected to a screw body (3) via a bearing, the outer surface of the screw body (3) is threadedly connected to a screw sleeve (12), the upper surface of the screw sleeve (12) is fixedly connected to a push plate (7), one side surface of the mounting seat (1) is fixedly connected to a motor (5), the output end of the motor (5) is fixedly connected to one end of the screw body (3), and the upper surface of the mounting seat (1) is fixedly connected to a backing plate (6).

2. A milk delivery device for a coffee machine according to claim 1, Features: A damper (10) is fixedly connected to one side surface of the push plate (7), one end of the damper (10) is fixedly connected to a pressure plate (8), one side surface of the pressure plate (8) is fixedly connected to a spring (11), and one end of the spring (11) is fixedly connected to the outer surface of the push plate (7).

3. A milk delivery device for a coffee machine according to claim 2, Features: The inner wall surface of the spring (11) is sleeved on the outer surface of the damper (10).

4. A coffee machine milk delivery device according to claim 1, Features: The inner wall surface of the installation groove (2) is provided with two limiting sliding grooves (4), and the inner wall surfaces of the two limiting sliding grooves (4) are both slidably embedded with limiting sliding blocks (13), and one side surface of the two limiting sliding blocks (13) is fixedly connected to the outer surface of the screw sleeve (12).

5. The milk delivery device for a coffee machine according to claim 2, Features: The opposing surfaces of the pressing plate (8) and the backing plate (6) are provided with a plurality of grooves (14), and rubber strips (9) are embedded inside the plurality of grooves (14).

6. A milk delivery device for a coffee machine according to claim 5, Features: The plurality of grooves (14) are distributed at equal intervals.

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