CN214341786U

CN214341786U - Sealing mechanism of milk foam machine

Info

Publication number: CN214341786U
Application number: CN202022022569.1U
Authority: CN
Inventors: 郑召良
Original assignee: Ningbo Turando Electrical Appliance Co ltd
Current assignee: Ningbo Turando Electrical Appliance Co ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-10-08
Anticipated expiration: 2030-09-15

Abstract

The sealing mechanism of the milk foam machine comprises a sealing piece and a sealing retainer, wherein the sealing piece is sleeved on a stirring rotating shaft of the milk foam machine and is provided with a first tightening part, and the sealing retainer fastens the first tightening part and the stirring rotating shaft together. The utility model has the advantages that on one hand, the sealing element and the stirring rotating shaft are tightened by the simple sealing retaining piece to realize sealing, and multiple sealing is realized by the plurality of tightening surfaces, and the air pressure in the gap between the adjacent tightening surfaces is skillfully utilized to further prevent liquid from permeating; on the other hand, the sealing is realized by utilizing the interference fit and the larger friction force between the elastic piece and the stirring rotating shaft, and the sealing effect is better than that of the scheme that the friction force at each position between the sealing piece and the stirring rotating shaft is the same in the prior art.

Description

Sealing mechanism of milk foam machine

Technical Field

The utility model relates to a small-size electronic equipment of steeping of suckleing especially relates to small-size machine of steeping of suckleing or the sealing mechanism who steeps the cup of suckleing.

Background

The principle of the milk foam machine is simple, but milk for milk foam is in a liquid state, and the motor is positioned below the whole device, so that the problem that the milk foam machine needs to solve is how to prevent the liquid from leaking. Among the prior art, the pivot drive of being connected with the motor is used for stiring the spring coil or other stirring heads of milk bubble, and the sealed of adopting between pivot and the cup that holds milk usually solves by various sealing washers, nevertheless when the high-speed rotation of pivot, still can't guarantee effectively sealed between pivot and the sealing washer, leads to milk infiltration, influences the motor operation even.

Chinese utility model patent with publication number CN209499489U discloses an upper and lower seal structure of milk bubble machine, sealing washer and mounting hole interference fit, sealing washer adopt elastic sealing material to make, including being located the first sealing of appearance intracavity and being located the second sealing under the chamber diapire, be equipped with ring groove between first sealing and the second sealing, ring groove with the diapire looks joint that holds the chamber is equipped with first annular groove on the first sealing. It realizes the sealed between pivot and the diapire through two part structures that link to each other from top to bottom, but still has a plurality of gaps between pivot and the sealing washer, and between sealing washer and the diapire to because partly of sealing washer has stretched into and holds intracavity portion, can influence the quality of beating milk bubble.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a simple structure and sealed effectual milk bubble machine's sealing mechanism is provided to overcome the complicated defect of prior art seal structure.

The utility model provides a technical scheme that above-mentioned technical problem adopted does:

the sealing mechanism of the milk foam machine comprises a sealing piece and a sealing retainer, wherein the sealing piece is sleeved on a stirring rotating shaft of the milk foam machine and is provided with a first tightening part, and the sealing retainer fastens the first tightening part and the stirring rotating shaft together.

Further, the first tightening part is in interference fit with the stirring rotating shaft.

Further, the first tightening part is in close contact with the connecting part of the stirring rotating shaft under the pressing action of the seal holder.

Further, the sealing element is provided with a second tightening part, and the second tightening part is in interference fit with the stirring rotating shaft.

Further, the first tightening parts and the seal holders are arranged in pairs, and the number of the first tightening parts is one pair or more than one pair.

Further, the sealing member has an upper surface directly contacting the liquid and a step surface not directly contacting the liquid, the step surface being connected to the upper surface by an axial side wall, the step surface being located below the upper surface and having a diameter larger than that of the upper surface.

Furthermore, the upper surface upwards exposes out of the bottom surface of the liquid containing space of the milk foam machine, and the side wall is in interference fit with the bottom surface.

Further, the diameter of the step surface is larger than the diameter of the connection part of the stirring rotating shaft and the motor.

Further, a gap is formed between the second tightening part and the first tightening part.

Further, the sealing member and the seal holder are both made of silicone.

Compared with the prior art, the utility model has the advantages that on one hand, the sealing piece and the stirring rotating shaft are tightened by the simple sealing retainer to realize sealing, and multiple sealing is realized by the plurality of tightening surfaces, and the air pressure in the gap between the adjacent tightening surfaces is skillfully utilized to further prevent liquid from permeating; on the other hand, utilize interference fit and great frictional force between elastic component and the stirring pivot to realize sealed, it is better than the equal same scheme seal effect of frictional force everywhere between sealing member and the stirring pivot among the prior art.

Drawings

FIG. 1 is a schematic view of the overall structure of the sealing mechanism of the milk foam machine of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

fig. 3 is a schematic sectional structure view of the sealing member of the sealing mechanism of the milk foaming machine of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Referring to fig. 1-2, the sealing mechanism of the milk frother of the present invention includes a sealing member 100, the sealing member 100 is sleeved on a stirring rotating shaft 200, and the sealing mechanism further includes a sealing holder 300 for fastening the sealing member 100 and the stirring rotating shaft 200 together. The stirring shaft 200 penetrates the sealing member 100, and the stirring shaft 200 exposes a stirring portion 210 above the sealing member 100, and the stirring portion 210 is used for connecting a blade or a spring ring for milk foam. The sealing member 100 has a first tightening portion 130, and in one embodiment, the first tightening portion 130 is in interference fit with the stirring rotating shaft 200, that is, the diameter of the first tightening portion 130 in a natural state without external force is smaller than that of the stirring rotating shaft 200, and when in sleeve fit with the stirring rotating shaft 200, the first tightening portion 130 presses the outer surface of the stirring rotating shaft 200. In another embodiment, the first tightening part 130 is in close contact with the connection part 220 of the stirring rotating shaft 200 by the pressing action of the seal holder 300, and the connection part 220 is located below the sealing member 100 and is in close contact with the sealing member 100; in other embodiments, the first tightening portion 130 itself is interference-fitted with the stirring rotating shaft 200 while achieving a more close contact with the connecting portion 220 of the stirring rotating shaft 200 by the pressing action of the seal holder 300.

In one embodiment, the stirring rotating shaft 200 has other contact surfaces besides the first tightening part 130 is in close contact with the sealing member 100, for example, at the connection between the stirring part 210 and the connecting part 220, the sealing member 100 has the second tightening part 101, and the second tightening part 101 is in interference fit with the stirring rotating shaft 200, so that the stirring rotating shaft 200 and the sealing member 100 have two seals, and a second layer of sealing effect is achieved. In one embodiment, both seal 100 and seal retainer 300 are made of a resilient, corrosion resistant material, such as silicone. In one embodiment, the seal retainer 300 is a silicone gasket. In other embodiments, the seal retainer 300 may also be other components capable of tightening the extrusion seal, such as an adjustable diameter snap ring or some clamp.

In one embodiment, a gap 102 is formed between the second tightening part 101 and the first tightening part 130, and the gap 102 forms a relatively sealed space with a certain air pressure inside after assembly, so that liquid can be further prevented from seeping down along the axial direction of the stirring rotating shaft 200.

The seal 100 has an upper surface 110 in direct contact with the liquid and a step surface 120 not in direct contact with the liquid, the upper surface 110 and the step surface 120 being connected by an axially extending sidewall 103, the step surface 120 being located below the upper surface 110 and having a diameter greater than the diameter of the upper surface 110. The cup wall 600 of the milk foaming machine forms a space A inside, the space A is used for containing liquid such as milk and the like which needs to be stirred, the bottom 400 of the space A is provided with a bottom surface 410 and a connecting side surface 420, the upper surface 110 is slightly exposed out of the bottom surface 410 upwards, and the side wall 103 is in interference fit with the bottom surface 410. The connecting side 420 is fixedly and hermetically connected to the bottom of the cup wall 600, and in one embodiment, the connecting side 420 is welded to the cup wall 600. A motor 500 connected with the stirring rotating shaft 200 is disposed below the bottom surface 410, and is used for driving the stirring rotating shaft 200 to rotate. The diameter of the step surface 120 is larger than the diameter of the connection 230 between the stirring rotating shaft 200 and the motor 500, so that even if a small amount of liquid seeps through the side wall 103, the liquid is blocked by the step surface 120 and does not seep into the motor 500 through the connection 230 between the stirring rotating shaft 200 and the motor 500, and even if the leaked liquid is thrown to the outside by the centrifugal force when the motor 500 rotates at a high speed, thereby protecting the normal operation of the motor 500.

Claims

1. Milk bubble machine sealing mechanism, its characterized in that: the sealing element is sleeved on a stirring rotating shaft of the milk foaming machine and provided with a first tightening part, and the sealing element fastens the first tightening part and the stirring rotating shaft together.

2. The milk frother sealing mechanism of claim 1, further comprising: the first tightening part is in interference fit with the stirring rotating shaft.

3. The milk frother sealing mechanism of claim 1, further comprising: the first tightening part is in close contact with the connecting part of the stirring rotating shaft under the extrusion action of the seal retainer.

4. The milk frother sealing mechanism of any of claims 1-3, wherein: the sealing element is provided with a second tightening part, and the second tightening part is in interference fit with the stirring rotating shaft.

5. The milk frother sealing mechanism of any of claims 1-3, wherein: the first tightening parts and the seal holders are arranged in pairs, and the number of the first tightening parts is one pair or more than one pair.

6. The milk frother sealing mechanism of any of claims 1-3, wherein: the sealing element is provided with an upper surface which is in direct contact with liquid and a step surface which is not in direct contact with the liquid, the step surface is connected with the upper surface through an axial side wall, and the step surface is positioned below the upper surface and has a diameter larger than that of the upper surface.

7. The milk frother sealing mechanism of claim 6, further comprising: the upper surface is upwards exposed out of the bottom surface of the liquid containing space of the milk foam machine, and the side wall is in interference fit with the bottom surface.

8. The milk frother sealing mechanism of claim 7, further comprising: the diameter of the step surface is larger than the diameter of the joint of the stirring rotating shaft and the motor.

9. The milk frother sealing mechanism of claim 4, further comprising: a gap is formed between the second tightening part and the first tightening part.

10. The milk frother sealing mechanism of claim 1, further comprising: the sealing element and the sealing retaining element are both made of silica gel.