Soybean milk machine and motor leakage-proof structure thereof

Abstract

The utility model provides a motor prevents water structure, including machine body, the liquid stirring chamber and motor installation cavity that are formed by a separating component in machine body is separated, a transmission power rotating shaft extends to liquid stirring chamber from motor installation cavity, and the shaft seal that is suitable for preventing liquid to motor installation cavity seepage is equipped between rotating shaft and separating component, and the shaft seal has the sealing lip sealed cooperation with rotating shaft, rotating shaft has the water baffle that is equipped in liquid stirring chamber, and water baffle rotates with rotating shaft, water baffle has the water retaining portion that circumferential encircles the outside of sealing lip, and the clearance between water retaining portion and sealing lip is less than the specified distance, so that when water baffle rotates at the set speed, the centrifugal force that water retaining portion generates can prevent liquid to penetrate sealing lip and seepage towards motor installation cavity. The utility model further provides a soybean milk machine of application this motor prevents water structure.

Description

Technical Field

[0001] This utility model relates to the field of beverage manufacturing equipment, specifically to a soymilk maker and its motor with a leak-proof structure. Background Technology

[0002] Beverage manufacturing equipment is widely used in the food service industry. For example, a soy milk maker uses a water jet created by stirring blades to thoroughly mix water and soy milk powder in a mixing tank to complete the soy milk making process. During the production and installation of a soy milk maker, it is difficult to ensure the concentricity of the motor shaft and shaft seal, resulting in gaps between them. During the soy milk making process, the stirring blades create a vortex in the mixing tank, causing water to be thrown into the gap between the motor shaft and shaft seal, leading to leakage. Existing technologies often suffer from side effects from sealing gaps and insufficient leak-proof performance. For example, increasing the interference fit of the shaft seal or improving the hardness of the silicone seal can ensure a gap-free connection between the motor shaft and the seal after installation; however, this increases friction, leading to noise during motor operation, shortened seal life, and eventual wear and tear, resulting in gaps that can still form between the motor shaft and the seal. Similarly, the method described in application number CN201220512904.9, which adds a water-spraying blade in front of the motor to block the water flow carried backward by the vortex, still leaves a gap between the motor shaft and the seal, and the blade cannot effectively block all water flow during the slurry-making process. Furthermore, in existing technologies, the shaft seal is exposed inside the mixing tank, while soy milk makers typically operate at high speeds. The high-speed water flow generated by the mixing blades directly impacts the shaft seal, easily causing damage. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a water-proof structure for a soymilk maker and its motor.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A leak-proof structure for a motor in a soymilk maker includes a body, a liquid stirring chamber and a motor mounting chamber separated by a partition member within the body, wherein a motor is disposed within the motor mounting chamber, and a power-transmitting shaft extends from the motor mounting chamber to the liquid stirring chamber. A shaft seal adapted to prevent liquid leakage into the motor mounting chamber is disposed between the shaft and the partition member, the shaft seal having a sealing lip that seals with the shaft. The shaft has a water-blocking ring disposed within the liquid stirring chamber, the water-blocking ring rotating with the shaft. The water-blocking ring has a water-blocking portion circumferentially surrounding the outside of the sealing lip, and the gap between the water-blocking portion and the sealing lip is less than a predetermined distance, so that when the water-blocking ring rotates at a set speed, the centrifugal force generated by its water-blocking portion can prevent liquid from penetrating the sealing lip and leaking towards the motor mounting chamber.

[0006] Furthermore, the gap between the water-blocking part and the sealing lip is less than 1.0 mm.

[0007] Furthermore, the water-blocking part abuts against the sealing lip.

[0008] Furthermore, the set speed is not less than 4000 revolutions per minute.

[0009] Furthermore, the outer side of the water-retaining ring has an inclined water-guiding surface, which is adapted to guide liquid away from the sealing lip.

[0010] Furthermore, the water guiding surface includes a first section and a second section, and in the extending direction of the water guiding surface, the first section is located upstream of the second section.

[0011] Furthermore, both the first and second segments are frustum-shaped side surfaces.

[0012] Furthermore, the diameter of the end truncated circle of the first segment is greater than the diameter of the beginning truncated circle of the second segment.

[0013] Furthermore, the inner side of the water-blocking ring has a mating hole, which forms an interference fit with the rotating shaft.

[0014] Furthermore, the rotating shaft is coaxially arranged with the output shaft of the motor and is fixedly connected to the output shaft of the motor.

[0015] Furthermore, the shaft also has a waterproof ring disposed within the motor mounting cavity, the waterproof ring being adapted to prevent liquid from flowing along the shaft toward the motor.

[0016] Furthermore, the waterproof ring has the same shape as the water-retaining ring.

[0017] A soymilk maker includes the aforementioned leak-proof motor structure.

[0018] Due to the adoption of the above technical solutions, this utility model has the following beneficial effects:

[0019] 1. When the water-blocking ring rotates, the water-blocking part generates centrifugal force on the liquid, preventing the liquid from penetrating the sealing lip and seeping into the motor mounting cavity, thereby preventing water leakage between the shaft and the shaft seal.

[0020] 2. The water-retaining ring can wrap the gap between the rotating shaft and the shaft seal, forming a double protection with the shaft seal, which enhances the waterproof effect. At the same time, it can prevent water from directly impacting the sealing lip and reduce the possibility of shaft seal failure.

[0021] 3. The water guide surface of the water-retaining ring can guide the water flow in the liquid mixing chamber away from the sealing lip, reducing the risk of water leakage.

[0022] 4. The water baffle can block the debris generated by the friction between the shaft seal and the rotating shaft, while the water baffle itself does not rub against the rotating shaft and therefore does not generate debris, thus ensuring food safety.

[0023] 5. The waterproof ring ensures that water will not enter the motor body in case of accidental leakage, thus preventing the motor from leaking electricity or being damaged.

[0024] 6. No need to increase the interference fit between the shaft seal and the rotating shaft, ensuring the life of the shaft seal, and the motor will not make obvious noise when running. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only involve some embodiments of this utility model, and are not intended to limit this utility model.

[0026] Figure 1 This is a 3D diagram of the motor's waterproof structure;

[0027] Figure 2 This is an exploded view of the motor's waterproof structure;

[0028] Figure 3 This is a cross-sectional view of the motor's waterproof structure;

[0029] Figure 4 This is a 3D view of the shaft seal;

[0030] Figure 5 This is a cross-sectional view of the shaft seal;

[0031] Figure 6 It is a 3D diagram of the water-retaining ring;

[0032] Figure 7 This is a cross-sectional view of the water-retaining ring. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] Unless otherwise defined, the technical or scientific terms used in this patent document shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model patent specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an," "a," or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" indicate that the element or object preceding "comprising" encompasses the element or object listed following "comprising" or its equivalents, and do not exclude other elements or objects. Terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are used only to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the features in the following embodiments can be combined with each other.

[0038] refer to Figure 1-5The present invention provides a motor leak-proof structure for a soymilk maker. The motor leak-proof structure includes a body A, a liquid stirring chamber B, and a motor mounting chamber C. Specifically, the body A includes a stirring tank 2, a partition member 6, and a frame 7. The frame 7 has a motor mounting plate 71. The partition member 6 is mounted on the motor mounting plate 71 and has a mounting base 61. The stirring tank 2 is mounted on the mounting base 61 and is located to the left of the partition member 6. The space inside the stirring tank 2 forms the liquid stirring chamber B. The space to the right of the partition member 6 and inside the frame 7 forms the motor mounting chamber C. The motor 8 is located in the motor mounting chamber C. A rotating shaft 81 extends from the motor mounting chamber C to the liquid stirring chamber B, and the power of the motor is transmitted to the stirring blades 3 via the rotating shaft 81. A shaft seal 5, suitable for preventing liquid leakage into the motor mounting chamber C, is disposed between the rotating shaft 81 and the partition member 6. The shaft seal 5 is fixedly mounted inside the mounting base 61 via an annular groove 51, and remains stationary when the rotating shaft 81 rotates. The shaft seal 5 has a funnel-shaped sealing lip 52, which is sealed to the rotating shaft 81. Preferably, the fit between the sealing lip 52 and the rotating shaft 81 is an interference fit to achieve a sealing and leak-proof effect; the shaft seal 5 should be made of an elastic and wear-resistant material, such as rubber or silicone.

[0039] refer to Figure 1-7 The rotating shaft 81 has a water-retaining ring 4 disposed on one side of the liquid stirring chamber B. The water-retaining ring 4 is installed near the shaft seal 5 and rotates with the rotating shaft 81. The water-retaining ring 4 has an annular water-retaining portion 41, which surrounds the outer side of the sealing lip 52. When the water-retaining ring 4 rotates at a set speed, the centrifugal force generated by the water-retaining portion 41 acts on the liquid, causing the liquid to move away from the sealing lip 52, thereby preventing the liquid from penetrating the sealing lip 52 and leaking towards the motor mounting cavity C. Specifically, the set speed is not less than 4000 revolutions per minute to ensure that the water-retaining portion 41 can generate sufficient centrifugal force when the water-retaining ring 4 rotates. Preferably, the water-retaining portion 41 has a flared structure adapted to the sealing lip 52, so that the water-retaining ring 4 does not interfere with the sealing lip 52 after installation. The water-retaining ring 4 should be made of a rigid material so that the water-retaining ring 4 can maintain a firm connection with the rotating shaft 81 and does not slip relative to it during rotation, thereby ensuring the stability and reliability of the waterproof performance.

[0040] refer to Figure 1-7 The gap between the water-blocking part 41 and the sealing lip 52 should be less than a specified distance, so that the centrifugal force generated by the rotation of the water-blocking part 41 can act on the liquid outside the sealing lip 52 to ensure the leak-proof effect. Preferably, the gap is set to less than 1.0 mm. The water-blocking part 41 can also abut against the sealing lip 52, that is, there is no gap between the water-blocking part 41 and the sealing lip 52, forming a double protection with the seal between the sealing lip 52 and the rotating shaft 81, further enhancing the leak-proof effect. In this embodiment, the water-blocking part 41 abuts against the sealing lip 52.

[0041] refer to Figure 1-7The outer side of the water-blocking ring 4 has an inclined water-guiding surface 42. Specifically, the stirring blade 3 is installed at the end of the rotating shaft 81 and is located on the left side of the liquid stirring chamber B. When the motor 8 is running, the stirring blade 3 forms a vortex in the liquid stirring chamber B, and the vortex causes the liquid to flow towards the sealing lip 52. The water-guiding surface 42 includes a first section 421 and a second section 422. The first section 421 is close to the stirring blade 3 and the second section 422 is close to the sealing lip 52. The extension direction of the water-guiding surface 42 is from the stirring blade 3 to the sealing lip 52, that is, the first section 421 is located upstream of the second section 422. Both the first surface 421 and the second surface 422 are frustum sides, and along the extending direction, the diameters of the truncated circles of the first surface 421 and the second surface 422 gradually increase. Thus, as the liquid flows towards the sealing lip 52, the slope 42 guides the liquid away from the sealing lip 52. Furthermore, the diameter of the truncated circle at the end of the first surface 421 is larger than the diameter of the truncated circle at the beginning of the second surface 422, giving the water-guiding surface 42 a stepped structure, which further enhances the water flow guidance effect. It should be understood that the water-guiding surface 42 can also be set to other suitable shapes, as long as it allows the liquid to move away from the sealing lip 52.

[0042] refer to Figure 1 , Figure 3 and Figure 6 The inner side of the water-blocking ring 4 has a mating hole 43 for assembly with the rotating shaft 81. Specifically, the mating hole 43 and the rotating shaft 81 form an interference fit to achieve a sealing and leak-proof effect, while ensuring that the water-blocking ring 4 is reliably fixed on the rotating shaft 81.

[0043] refer to Figure 1-3 In this embodiment, the motor 8 is mounted on the motor mounting plate 71, and the rotating shaft 81 is coaxially arranged with and fixedly connected to the output shaft of the motor 8. The output shaft of the motor 8 can also be connected to the rotating shaft 81 through other transmission methods, such as gear transmission or belt transmission, so that the motor 8 has a flexible installation position, and the rotating shaft 81 can meet the speed requirements of different models of soymilk makers.

[0044] refer to Figure 1 , Figure 2 , Figure 3 and Figure 6The rotating shaft 81 also has a waterproof ring 40 disposed within the motor mounting cavity C. In this embodiment, the motor mounting plate 71 has a through hole 72 through which the rotating shaft 81 passes. After installation, the waterproof ring 40 abuts against the motor mounting plate 71 and covers the through hole 72. The waterproof ring 40 and the motor 8 are located on opposite sides of the motor mounting plate 71. As a safety measure, in the event of accidental water leakage, the waterproof ring 40 can prevent liquid from entering the motor 8 along the rotating shaft 81, thereby protecting the motor 8 from leakage or damage and avoiding possible accidents and losses. Preferably, the waterproof ring 40 has the same shape as the water-retaining ring 4 to ensure waterproofing; the waterproof ring 40 and the water-retaining ring 4 can also have the same material and size, so that the waterproof ring 40 and the water-retaining ring 4 can be regarded as the same part, facilitating production and installation.

[0045] refer to Figure 1-3 This utility model provides a soymilk maker, including the aforementioned motor leak-proof structure. To realize the soymilk making process, the soymilk maker also includes a hopper 1 for feeding materials and a water inlet 21 for water inlet. The hopper 1 is installed above the mixing tank 2, and the water inlet 21 is located at the bottom left end of the mixing tank 2.

[0046] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A water-proof structure for a motor in a soymilk maker, comprising a body, a liquid stirring chamber and a motor mounting chamber formed by a partition member within the body, wherein a motor is disposed in the motor mounting chamber, and a power-transmitting shaft extends from the motor mounting chamber to the liquid stirring chamber, and a shaft seal adapted to prevent liquid from leaking into the motor mounting chamber is disposed between the shaft and the partition member, the shaft seal having a sealing lip that seals with the shaft. Its features are: The rotating shaft has a water-blocking ring disposed in the liquid stirring chamber, and the water-blocking ring rotates with the rotating shaft; wherein, the water-blocking ring has a water-blocking portion circumferentially surrounding the outside of the sealing lip, and the gap between the water-blocking portion and the sealing lip is less than a specified distance, so that when the water-blocking ring rotates at a set speed, the centrifugal force generated by its water-blocking portion can prevent liquid from penetrating the sealing lip and leaking toward the motor mounting cavity.

2. The motor waterproofing structure as described in claim 1, characterized in that, The gap between the water-blocking part and the sealing lip is less than 1.0 mm.

3. The motor waterproofing structure as described in claim 1 or 2, characterized in that, The water-blocking part abuts against the sealing lip.

4. The motor waterproofing structure as described in claim 1, characterized in that, The set speed is no less than 4000 revolutions per minute.

5. The motor waterproofing structure as described in claim 1, characterized in that, The outer side of the water-blocking ring has an inclined water-guiding surface, which is adapted to guide liquid away from the sealing lip.

6. The motor waterproofing structure as described in claim 5, characterized in that, The water guiding surface includes a first section and a second section, and in the extending direction of the water guiding surface, the first section is located upstream of the second section.

7. The motor waterproofing structure as described in claim 6, characterized in that, Both the first and second surfaces are frustum-shaped side surfaces.

8. The motor waterproofing structure as described in claim 7, characterized in that, The diameter of the end circle of the first segment is greater than the diameter of the beginning circle of the second segment.

9. The motor waterproofing structure as described in claim 1, characterized in that, The inner side of the water-blocking ring has a mating hole, which forms an interference fit with the rotating shaft; characterized in that the rotating shaft is coaxially arranged with and fixedly connected to the output shaft of the motor; characterized in that the rotating shaft also has a waterproof ring disposed in the motor mounting cavity, the waterproof ring being adapted to prevent liquid from flowing along the rotating shaft to the motor; characterized in that the waterproof ring has the same shape as the water-blocking ring.

10. A soy milk maker, characterized in that, Includes the motor waterproofing structure as described in any one of claims 1-9.

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