Ventilation pipe with oil blocking structure

Abstract

The utility model discloses a breather pipe with an oil baffle structure. The breather pipe comprises a breather pipe main body, a flange base and an oil baffle plate, and the breather pipe main body and the oil baffle plate are respectively arranged on the opposite sides of the flange base. A gas conveying cavity used for gas conveying is formed in the breather pipe body. And an air inlet through hole communicated with the air transmission cavity is formed in the flange base. The trapezoidal oil baffle plate is arranged at the air inlet end of the breather pipe main body, so that the probability that liquid oil in an oil tank splashes into the breather pipe main body is effectively reduced, and leakage of the liquid oil is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of vent pipes, and in particular relates to a vent pipe with an oil retaining structure. Background Art

[0002] In the existing oil delivery system, the oil is delivered through the movement of the piston or the movement of the cam. Under the influence of the piston movement, the gas contained in the oil in the oil tank gradually expands. In order to ensure that the air pressure in the oil tank is balanced during use, an air outlet is opened on the oil tank and a vent pipe is set to ensure the air pressure inside and outside the tank is balanced.

[0003] However, under the influence of piston movement, the oil in the oil tank will move in a circular direction along the inner wall of the oil tank, causing the oil to splash. The splashed liquid oil can easily enter the vent pipe and be discharged synchronously with the output gas. The outflow of liquid oil in the oil tank will increase the burden of the filter element at the outlet of the vent pipe and reduce the service life of the filter element. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art, the utility model provides a vent pipe with an oil retaining structure to solve the technical problem that the liquid oil in the oil tank is easily splashed into the vent pipe during operation.

[0005] To achieve the above purpose, the specific technical solution of the utility model is as follows:

[0006] A vent pipe with an oil baffle structure comprises a vent pipe body, a flange base and an oil baffle plate. The interior of the vent pipe body forms a gas delivery cavity for gas delivery. The flange base is provided with an air inlet hole connected to the gas delivery cavity. The vent pipe body and the oil baffle plate are respectively installed on both sides of the flange base.

[0007] Furthermore, the oil baffle plate comprises an integrally formed top oil baffle section, a middle oil baffle section and a bottom oil baffle section, and the inner edges of the top oil baffle section and the bottom oil baffle section are both welded and fixed to the flange base.

[0008] Furthermore, the inner edge of the top oil blocking section is higher than or flush with the top of the air inlet hole.

[0009] Furthermore, the inner edge of the bottom oil blocking section is higher than the bottom of the air inlet through hole, and the inner edge of the bottom oil blocking section and the inner wall of the air inlet through hole form an oil drain hole.

[0010] Furthermore, the side cross-section of the oil baffle is trapezoidal.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] 1. The utility model provides a trapezoidal oil baffle at the air inlet end of the vent pipe body, thereby effectively reducing the probability of liquid oil in the oil tank splashing into the vent pipe body and reducing the leakage of liquid oil.

[0013] 2. The utility model installs the vent pipe body in an inclined shape. At the same time, the inner edge of the bottom oil baffle section in the oil baffle plate is set higher than the bottom of the air intake hole, so that the inner edge of the bottom oil baffle section and the inner wall of the air intake hole form an oil drain hole. A small amount of oil splashed from the side of the oil baffle plate into the vent pipe body slides downward along the inner wall of the vent pipe body under the action of gravity, and flows back into the oil cavity through the oil drain hole, thereby avoiding the accumulation of oil in the vent pipe body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a top view of the structure of the utility model;

[0016] Figure 3 For the utility model Figure 2 Sectional view in the AA direction;

[0017] Figure 4 It is a schematic diagram of the relative positions of the bottom oil baffle section and the air intake through hole in the utility model.

[0018] Figure numerals: 1. ventilation pipe body; 2. flange base; 2-1. air inlet hole; 3. oil baffle plate; 3-1. top oil baffle section; 3-2. middle oil baffle section; 3-3. bottom oil baffle section; 4. oil drain hole. DETAILED DESCRIPTION

[0019] The utility model will be further described below in conjunction with the accompanying drawings.

[0020] like Figure 1 and 2 As shown, a vent pipe with an oil baffle structure includes a vent pipe body 1, a flange base 2 and an oil baffle plate 3. An air inlet hole is provided on the flange base 2. The two ends of the flange base 2 are respectively an air inlet end and an air outlet end. The oil baffle plate 3 and the vent pipe body 1 are respectively installed at the air inlet end and the air outlet end of the flange base 2. The interior of the vent pipe body 1 constitutes an air delivery cavity for gas delivery. The oil baffle plate 3 is used to prevent the oil baffle liquid from splashing into the air delivery cavity during the oscillation process.

[0021] like Figure 3 As shown, the side cross section of the oil baffle plate 3 is trapezoidal. The oil baffle plate 3 includes an integrally formed top oil baffle section 3-1, a middle oil baffle section 3-2 and a bottom oil baffle section 3-3. The inner edges of the top oil baffle section 3-1 and the bottom oil baffle section 3-3 are both welded and fixed to the flange base 2.

[0022] like Figure 3 and 4 As shown, the inner edge of the top oil blocking section 3-1 is higher than or flush with the top of the air intake hole, completely shielding the top area of ​​the air intake hole 2-1 to prevent splashing oil from entering from the top of the air intake hole. The inner edge of the bottom oil blocking section 3-3 is higher than the bottom of the air intake hole 2-1. The inner edge of the bottom oil blocking section 3-3 and the inner wall of the air intake hole 2-1 form an oil drain hole 4. The liquid oil in the vent pipe body 1 flows back into the oil tank from the oil drain hole 4.

[0023] During installation, the air outlet end of the vent pipe body 1 is higher than the end where the vent pipe body 1 is connected to the flange base 2, so that the vent pipe body 1 is inclined. A small amount of oil splashed from the side of the oil baffle 3 into the vent pipe body 1 will slide downward along the inner wall of the vent pipe body 1 under the action of gravity and flow back into the oil chamber through the oil drain hole 4.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A vent pipe with an oil retaining structure, comprising a vent pipe body (1) and a flange base (2); the interior of the vent pipe body (1) forms an air delivery cavity; the flange base (2) is provided with an air inlet hole (2-1) connected to the air delivery cavity; the characteristics are: It also includes an oil baffle plate (3); the vent pipe body (1) and the oil baffle plate (3) are respectively installed on both sides of the flange base (2).

2. The vent pipe with an oil retaining structure according to claim 1, characterized in that: The oil baffle plate (3) comprises an integrally formed top oil baffle section (3-1), a middle oil baffle section (3-2) and a bottom oil baffle section (3-3); the inner edges of the top oil baffle section (3-1) and the bottom oil baffle section (3-3) are both welded and fixed to the flange base (2).

3. The vent pipe with an oil retaining structure according to claim 2, characterized in that: The inner edge of the top oil blocking section (3-1) is higher than or flush with the top of the air intake hole (2-1).

4. The vent pipe with an oil retaining structure according to claim 2, characterized in that: The inner edge of the bottom oil blocking section (3-3) is higher than the bottom of the air intake hole (2-1); the inner edge of the bottom oil blocking section (3-3) and the inner wall of the air intake hole (2-1) form an oil drain hole (4).

5. The vent pipe with an oil retaining structure according to claim 1, characterized in that: The side cross section of the oil baffle plate (3) is trapezoidal.

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