Gear box of water surface impeller type oxygenator saving lubricating oil

Abstract

The water surface impeller type oxygenator gear box of saving lubricating oil, including input shaft driven by motor rotation, output shaft connected with impeller, input shaft and output shaft are connected with planetary gear transmission mechanism, output shaft is supported by two bearings which are separated by certain distance, the inner chamber of gear box leaves transition area between two bearings, hollow body which is closed by shell is placed in transition area, and the hollow body occupies most space of transition area. The utility model has the advantages of greatly reducing the effective volume of transition area in gear box, making lubricating oil mainly exist in planetary gear transmission mechanism, only a little lubricating oil exists in transition area, greatly saving the use amount of lubricating oil, and reducing the whole weight and logistics cost of oxygenator. Furthermore, because there is only a little lubricating oil in transition area, the risk of lubricating oil in transition area permeating out from oil seal rubber ring of output shaft is reduced, the fishpond water is ensured not to be polluted by leaked lubricating oil, and the sanitary safety of aquatic products is improved.

Description

Technical Field

[0001] This utility model relates to a surface impeller aerator used in aquaculture, and more particularly to the gearbox of such aerator. Background Technology

[0002] Figure 1 This is a gearbox used in surface impeller aerators. This gearbox employs a planetary gear transmission mechanism. The input shaft 1 (motor shaft) drives the output shaft 3 to rotate via the planetary gear transmission mechanism 2, thereby rotating the aerator's impeller. A key feature of this gearbox is that the output shaft 3 is supported by two bearings 4 and 5 spaced a certain distance apart, forming a transition zone 6 within the gearbox's interior between the two bearings 4 and 5. Although there are no parts requiring lubrication within the transition zone 6, because the planetary gear transmission mechanism 2 is located above the transition zone 6, the lubricating oil in the planetary gear transmission mechanism 2 flows downwards into the transition zone 6. Therefore, the transition zone 6 must be filled with lubricating oil to ensure that the planetary gear transmission mechanism 2 is properly lubricated. Accumulating a large amount of lubricating oil in the transition zone 6 not only results in waste but also increases the overall weight of the aerator, thus increasing logistics costs. It also increases the risk of lubricating oil seeping out from the oil seal rubber ring 7 on the output shaft. Utility Model Content

[0003] The purpose of this invention is to improve upon the existing gearboxes described above and provide a gearbox for a water surface impeller aerator that saves lubricating oil.

[0004] This invention is implemented as follows: the gearbox of the water surface impeller aerator that saves lubricating oil includes an input shaft driven to rotate by a motor, an output shaft connected to the impeller, a planetary gear transmission mechanism connecting the input shaft and the output shaft, the output shaft being supported by two bearings spaced a certain distance apart, and a transition zone between the two bearings being left in the inner cavity of the gearbox. In particular, a hollow body with a closed outer shell is placed in the transition zone, and the hollow body occupies most of the space in the transition zone.

[0005] In the preferred embodiment, the hollow body is fitted onto the output shaft, and the outer peripheral wall of the hollow body is integrally formed with a groove.

[0006] The advantages of this invention are that the hollow body significantly reduces the effective volume of the transition zone within the gearbox, allowing the lubricating oil to remain primarily in the planetary gear transmission mechanism, with only a small amount remaining in the transition zone. This greatly saves on lubricating oil usage and reduces the overall weight and logistics costs of the aerator. Furthermore, because only a small amount of lubricating oil remains in the transition zone, the risk of lubricating oil seeping out from the oil seal rubber ring on the output shaft is reduced, ensuring that the fishpond water is not contaminated by leaked lubricating oil and improving the hygiene and safety of aquatic products. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the gearbox configured in an existing surface impeller aerator; Figure 2 This is a schematic diagram of the structure of the gearbox described in this utility model; Figure 3 Show separately Figure 1 Hollow body in the middle; Figure 4 yes Figure 3 A three-dimensional image. Detailed Implementation

[0008] To facilitate understanding of this utility model, the following embodiments provide a more comprehensive description of the present utility model. The embodiments illustrate implementation methods of the present utility model. However, the present utility model can be implemented in many different forms and is not limited to the implementation methods described in the embodiments.

[0009] See Figure 2 The gearbox of this invention includes an input shaft 1 driven to rotate by a motor, an output shaft 3 connected to an impeller, and a planetary gear transmission mechanism 2 connecting the input shaft 1 and the output shaft 3. Typically, the input shaft 1 is the motor's rotating shaft. The input shaft 1 drives the output shaft 3 to rotate via the planetary gear transmission mechanism 2, thereby driving the impeller of the aerator to rotate. The output shaft 3 is supported by two bearings 4 and 5 spaced a certain distance apart. A transition zone 6 is formed within the gearbox's inner cavity between the two bearings 4 and 5. Figure 2 The transition zone 6 shown is actually... Figure 1 The transition zone 6 is shown. A hollow body 8 with a closed shell is placed in the transition zone 6. The hollow body 8 occupies most of the space in the transition zone 6, for example, occupies 85% or more of the space in the transition zone, thereby greatly reducing the effective volume of the transition zone 6, so that most of the lubricating oil remains in the planetary gear transmission mechanism 2, and only a small amount of lubricating oil remains in the transition zone 6.

[0010] For the best implementation, see also Figure 2 , Figure 3 , Figure 4 The hollow body 8 is fitted onto the output shaft 3, and its outer peripheral wall is integrally formed with multiple grooves 8a. The grooves 8a act as reinforcing ribs, enhancing the strength of the hollow body 8. The entire hollow body 8 can be made of low-cost oil-resistant plastic using a blow molding process.

[0011] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of protection of this patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the scope of protection of this utility model. Therefore, the scope of protection of this utility model patent should be determined by the appended claims.

Claims

1. A gearbox for a water surface impeller aerator that saves lubricating oil, comprising an input shaft driven to rotate by a motor, an output shaft connected to an impeller, a planetary gear transmission mechanism connecting the input and output shafts, and the output shaft being supported by two bearings spaced a certain distance apart. The gearbox's inner cavity has a transition zone between the two bearings. Its characteristic is: A hollow body with a closed shell is placed in the transition zone, and the hollow body occupies most of the space in the transition zone.

2. The gearbox of the oil-saving water surface impeller aerator as described in claim 1, characterized in that: The hollow body is fitted onto the output shaft, and the outer peripheral wall of the hollow body is integrally formed with a groove.

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