Novel gearbox air filter

Abstract

The utility model relates to a novel gearbox air filter which comprises a gearbox body, a connecting pipe and an air filter body, one end of the connecting pipe is connected to the top of the gearbox body, the other end of the connecting pipe is connected to the bottom of the air filter body, and the air filter body is communicated with an inner cavity of the gearbox body through the connecting pipe. And an annular sealing plate connected with the outer wall of the connecting pipe is arranged at the bottom of the air filter body. According to the air filter, the filter screen is arranged in the ventilation cap of the air filter body, bubbles in oil can be removed through the filter screen, then lubricating oil is subjected to impurity treatment through the filter element, then the lubricating oil can enter the backflow channel through the first oil return hole and flow back into the connecting pipe through the second oil return hole, and the lubricating oil can be recycled. Therefore, the lubricating oil can flow back into the gear box body in the connecting pipe for repeated use under the action of gravity, and the problems that the lubricating oil drips above the gear box body, so that the surface of the gear box body is polluted, and oil is wasted are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gear box ventilation, in particular to a novel gear box air filter. Background Art

[0002] The existing Chinese patent application CN203421148U discloses an air filter and a reducer. The patent sets the air cap away from the inner wall of the box body, so as to maintain a long distance from the oil in the box body, thereby avoiding the oil in the box body from overflowing along the channel in the air cap, helping to keep the air filter clean, and preventing the air cap from adhering to dust in the air, thereby reducing the occurrence of air cap channel blockage, and greatly reducing the cost of air cap maintenance and replacement.

[0003] Although the above-mentioned public patent proposes a solution to the problem of oil overflow, in actual use, a large number of oil droplets stirred up by the high-speed rotation of the gears will continue to splash into the exhaust holes of the filter, and the exhaust holes will still be blocked for a long time. As a result, a large amount of gas will accumulate in the gear box after the exhaust holes are blocked, generating positive pressure. Due to the pressure change in the gear box, oil leaks out at both ends of the exhaust holes and drips directly onto the top of the gear box, causing pollution to the surface of the gear box and waste of lubricating oil. Utility Model Content

[0004] The utility model provides a novel gear box air filter to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A new gearbox air filter comprises a gearbox body, a connecting pipe and an air filter body, one end of the connecting pipe is connected to the top of the gearbox body, and the other end of the connecting pipe is connected to the bottom of the air filter body, the air filter body is communicated with the inner cavity of the gearbox body through the connecting pipe, and the bottom of the air filter body is provided with an annular sealing plate connected to the outer wall of the connecting pipe, a reflux channel is formed between the annular sealing plate, the connecting pipe and the air filter body, a first oil return hole communicated with the reflux channel is provided at the bottom of the air filter body, a second oil return hole communicated with the reflux channel is provided on the outer wall of the connecting pipe, and an air vent communicated with the reflux channel is provided on the surface of the annular sealing plate.

[0007] Preferably, a filter screen is provided inside the air permeable cap of the air filter body, and a filter element is provided on the outer edge of the filter screen.

[0008] Preferably, the first oil return hole is provided on a side of the filter element away from the filter screen.

[0009] Preferably, the filter screen is arranged at one end of the connecting pipe.

[0010] Preferably, the second oil return hole is arranged at a position that fits the bottom of the annular sealing plate.

[0011] Preferably, the air vent is arranged at a position that fits the bottom of the first oil return hole.

[0012] Preferably, the annular sealing plate is connected to the outer wall of the connecting pipe and the bottom of the air filter body in a circular ring shape.

[0013] Preferably, the annular sealing plate is conically connected to the outer wall of the connecting pipe and the bottom of the air filter body.

[0014] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0015] In the utility model, a filter screen is arranged in the air cap of the air filter body, so that the filter screen can remove bubbles in the oil, and then the lubricating oil passes through the filter element to process impurities, and then can enter the reflux channel through the first oil return hole, and return to the connecting pipe through the second oil return hole, so that the lubricating oil can be returned to the gear box body in the connecting pipe under the action of gravity for repeated use, thereby avoiding the problem of lubricating oil dripping on the top of the gear box body, causing pollution to the surface of the gear box body and waste of oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of the first embodiment of the utility model;

[0017] Figure 2 This is a structural schematic diagram of the second embodiment of the present utility model.

[0018] In the figure: 1. gearbox body; 2. connecting pipe; 3. air filter body; 4. annular sealing plate; 5. reflux channel; 6. first oil return hole; 7. second oil return hole; 8. air vent; 9. filter screen; 10. filter element. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure. Example

[0021] like Figure 1-2 As shown, the utility model provides a novel gearbox air filter, comprising a gearbox body 1, a connecting pipe 2 and an air filter body 3, one end of the connecting pipe 2 is connected to the top of the gearbox body 1, and the other end of the connecting pipe 2 is connected to the bottom of the air filter body 3, the air filter body 3 is communicated with the inner cavity of the gearbox body 1 through the connecting pipe 2, and the bottom of the air filter body 3 is provided with an annular sealing plate 4 connected to the outer wall of the connecting pipe 2, a reflux channel 5 is formed between the annular sealing plate 4, the connecting pipe 2 and the air filter body 3, a first oil return hole 6 communicating with the reflux channel 5 is opened at the bottom of the air filter body 3, a second oil return hole 7 communicating with the reflux channel 5 is opened on the outer wall of the connecting pipe 2, and an air vent 8 communicating with the reflux channel 5 is opened on the surface of the annular sealing plate 4.

[0022] Specifically, at least two of the first oil return hole 6, the second oil return hole 7 and the air vent 8 are provided, which can speed up the return of the lubricating oil and avoid the problem of long return time. The connecting pipe 2 can be increased in length compared with the existing size, so that the connecting pipe 2 can effectively avoid oil splashing after being lengthened.

[0023] In this embodiment, a filter screen 9 is arranged inside the air permeable cap of the air filter body 3, and the filter screen 9 is arranged at one end of the connecting pipe 2. A filter element 10 is arranged on the outer edge of the filter screen 9, and the first oil return hole 6 is opened on the side of the filter element 10 away from the filter screen 9, which is beneficial to the removal of bubbles in the oil after the oil passes through the filter screen 9, and after being processed by the filter element 10, the oil returns to the gear box body 1 through the first oil return hole 6, and the filter element 10 mainly processes impurities such as dust adhered to the oil. The processing technology is an existing conventional technology, which has been widely used in this field and is well known to those skilled in the art. Therefore, this article does not elaborate on the processing of the filter element 10.

[0024] In this embodiment, the second oil return hole 7 is arranged at a position that fits with the bottom of the annular sealing plate 4, and the air hole 8 is arranged at a position that fits with the bottom of the first oil return hole 6, so that the air hole 8 can ensure ventilation, avoid gas accumulation in the gear box body 1, and reduce the problem of oil leakage caused by pressure changes in the box; and the position design of the second oil return hole 7 is conducive to the reflux of oil that flows into the reflux channel 5 through the first oil return hole 6, avoiding oil dripping on the top of the gear box body 1, causing surface contamination of the gear box body 1 and waste of oil.

[0025] In this embodiment, the annular sealing plate 4 is connected to the outer wall of the connecting pipe 2 and the bottom of the air filter body 3 in a circular ring shape. Example

[0026] like Figure 2As shown, based on the first embodiment, the annular sealing plate 4 is conically connected to the outer wall of the connecting pipe 2 and the bottom of the air filter body 3. The annular sealing plate 4 adopts a conical design, so that the refluxed lubricating oil can more easily flow back into the gearbox body 1.

[0027] The working principle and use process of the utility model are as follows: when in use, when the gears inside the gear box body 1 stir up the splashing lubricating oil during the high-speed rotation, the lubricating oil enters the air filter body 3 along the connecting pipe 2, and then can first remove the bubbles in the oil through the filter screen 9, and then the impurities in the oil are processed through the filter element 10, and then can enter the reflux channel 5 through the first oil return hole 6, and return to the connecting pipe 2 through the second oil return hole 7, so that the lubricating oil can flow back to the gear box body 1 in the connecting pipe 2 under the action of gravity for repeated use, avoiding the lubricating oil dripping on the top of the gear box body 1, causing the surface pollution of the gear box body 1 and the waste of oil.

[0028] In the present utility model, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The term "and / or" used in this article includes any and all combinations of one or more related listed items. The terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0029] It should be noted that when an element is referred to as being "assembled on", "installed on", "fixed on" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0030] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A new type of gearbox air filter, characterized in that: The invention comprises a gearbox body (1), a connecting pipe (2) and an air filter body (3), wherein one end of the connecting pipe (2) is connected to the top of the gearbox body (1), and the other end of the connecting pipe (2) is connected to the bottom of the air filter body (3); the air filter body (3) is connected to the inner cavity of the gearbox body (1) through the connecting pipe (2); an annular sealing plate (4) connected to the outer wall of the connecting pipe (2) is provided at the bottom of the air filter body (3); a return channel (5) is formed between the annular sealing plate (4), the connecting pipe (2) and the air filter body (3); a first oil return hole (6) connected to the return channel (5) is provided at the bottom of the air filter body (3); a second oil return hole (7) connected to the return channel (5) is provided on the outer wall of the connecting pipe (2); and a vent hole (8) connected to the return channel (5) is provided on the surface of the annular sealing plate (4).

2. A novel gearbox air filter according to claim 1, characterized in that: A filter screen (9) is arranged inside the air permeable cap of the air filter body (3), and a filter element (10) is arranged on the outer edge of the filter screen (9).

3. A novel gearbox air filter according to claim 2, characterized in that: The first oil return hole (6) is disposed on a side of the filter element (10) away from the filter screen (9).

4. A novel gearbox air filter according to claim 2, characterized in that: The filter screen (9) is arranged at one end of the connecting pipe (2).

5. A novel gearbox air filter according to claim 1, characterized in that: The second oil return hole (7) is arranged at a position that fits the bottom of the annular sealing plate (4).

6. A novel gearbox air filter according to claim 1, characterized in that: The air vent (8) is arranged at a position that fits in with the bottom of the first oil return hole (6).

7. A novel gearbox air filter according to claim 1, characterized in that: The annular sealing plate (4) is connected to the outer wall of the connecting pipe (2) and the bottom of the air filter body (3) in a circular ring shape.

8. A novel gearbox air filter according to claim 1, characterized in that: The annular sealing plate (4) is conically connected to the outer wall of the connecting pipe (2) and the bottom of the air filter body (3).

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