Splash-proof air breather valve with replaceable filter

Abstract

The utility model discloses a replaceable filter core's splashproof oil air breathing valve, including filter core connection casing, the lower extreme of filter core connection casing is the taper structure, and the inside lower extreme of filter core connection casing is provided with the support, the inside of filter core connection casing is provided with inner filter core and outer filter core, and the upper extreme of inner filter core and outer filter core is located the outside of filter core connection casing, and the upper extreme of inner filter core and outer filter core is even, and the lower extreme of inner filter core and outer filter core is sealedly connected with the inside bottom surface of filter core connection casing, and the upper extreme between inner filter core and outer filter core is provided with the upper end cap of its compression, and the outside diameter of upper end cap is greater than the outside diameter of filter core connection casing, and the splash oil liquid of speed reducer gear operation, and when passing through gas liquid net, oil liquid adheres metal mesh silk because inertia collision, gradually gathers into big liquid drop and separates because gravity settlement, and most oil liquid returns to oil tank after passing through inner filter core, avoids the outside leakage pollution of oil liquid, and moreover, the filter core of later period is more convenient to replace.

Description

Technical Field

[0001] This utility model relates to the field of reducer oil tank technology, specifically to a replaceable filter element anti-splash air breather valve. Background Technology

[0002] To reduce internal pressure, a venting device, called a breather valve, is installed on the oil tank of a speed reducer or speed reducer unit. After working for a period of time, due to internal pressure or gear splashing, lubricating oil will leak out from the breather valve, causing contamination to the machine body and the site. Existing devices either do not have the function of filtering gas, cannot introduce the filtered oil into the oil tank, or are inconvenient to replace the filter element. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a replaceable filter element anti-splash oil air breather valve. When the gear of the reducer runs and splashes oil, the oil adheres to the metal mesh due to inertial collision when passing through the air-liquid mesh. It gradually gathers into large droplets and then separates due to gravity. Most of the oil returns to the oil tank after passing through the inner filter element, avoiding external leakage and pollution of oil. Moreover, it is more convenient to replace the filter element later, which can effectively solve the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a replaceable filter element anti-splash air breather valve, comprising a filter element connecting housing, the lower end of which is a conical structure, a bracket provided at the lower inner end of the filter element connecting housing, an inner filter element and an outer filter element provided inside the filter element connecting housing, the upper ends of which are located outside the filter element connecting housing and are flush with each other, the lower ends of which are sealed to the inner bottom surface of the filter element connecting housing, and an upper end cap provided between the upper ends of the inner and outer filter elements to press them together, the outer diameter of the upper end cap being larger than the outer diameter of the filter element connecting housing, and a tensioning member provided between the center of the upper end cap and the center of the bracket, and a perforated ring provided on the inner bottom surface of the filter element connecting housing, the perforated ring having uniformly arranged through holes, and the perforated ring being located between the inner and outer filter elements. The oil filtered by the external filter element drips into the interior of the filter element connecting housing, and then flows back into the oil tank through the through holes on the perforated ring and the lower end of the inner filter element. Furthermore, the lower end of the filter element connecting housing is provided with an integrally connected connector, the outer side of the connector is provided with external threads, the outer side of the connection between the connector and the filter element connecting housing is provided with an annular groove, and a sealing ring is provided inside the annular groove.

[0005] Furthermore, two rubber sealing rings are affixed to the inner top surface of the upper cover, and the two rubber sealing rings are sealed to the upper ends of the inner filter element and the outer filter element.

[0006] Furthermore, the tensioning component includes a connecting rod, the lower end of which is welded to the center of the bracket, and a connecting sleeve is fixed to the center of the upper end cap. The inner side of the connecting sleeve is provided with an internal thread, and the connecting sleeve is connected to the upper end of the connecting rod by means of a threaded connection.

[0007] Furthermore, the outer filter element includes a filter element with a corrugated structure. The upper and lower ends of the filter element are provided with connecting rings. The inner filter element is made of wire mesh interlaced and wound on an inner support, and shaped by an outer support. One end is bonded to an end cap and a sealing strip, and the other end has wire mesh exposed. The wire mesh density is 120-180 kg / m³. The filter element of the outer filter element is made of oil-water separation fiber filter material.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: When the oil temperature inside the oil tank is too high, the gas filters the oil by passing through the inner and outer filter elements. The oil filtered by the outer filter element drips into the interior of the filter element connecting housing. The oil flows back into the oil tank through the through hole on the perforated ring and the lower end of the inner filter element. When the reducer gears run, the splashed oil passes through the gas-liquid mesh. Due to inertial collision, the oil adheres to the metal mesh wires and gradually gathers into large droplets. Then, it settles and separates due to gravity. Most of the oil returns to the oil tank after passing through the inner filter element. This replaceable filter element anti-splash air breather valve prevents oil leakage and pollution. Moreover, it makes it more convenient to replace the filter element later. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] In the diagram: 1. Filter element connecting housing, 2. Sealing ring, 3. Connector, 4. Bracket, 5. Perforated ring, 6. Outer filter element, 61. Connecting ring, 62. Filter element, 7. Connecting rod, 8. Inner filter element, 9. Rubber sealing ring, 10. Connecting sleeve, 11. Top cover. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0012] Please see Figure 1This utility model provides a technical solution: a replaceable filter element anti-splash air breather valve, including a filter element connecting housing 1. The lower end of the filter element connecting housing 1 has a conical structure. A bracket 4 is provided inside the lower end of the filter element connecting housing 1. An inner filter element 8 and an outer filter element 6 are provided inside the filter element connecting housing 1. The upper ends of the inner filter element 8 and the outer filter element 6 are located outside the filter element connecting housing 1 and are level with each other. The lower ends of the inner filter element 8 and the outer filter element 6 are sealed to the inner bottom surface of the filter element connecting housing 1. An upper end cap 11 is provided between the upper ends of the inner filter element 8 and the outer filter element 6 to press them together. The outer diameter of the upper end cap 11 is larger than the outer diameter of the filter element connecting housing 1, and the center of the upper end cap 11 is aligned with the center of the bracket 4. A tensioning element is provided between the inner filter element 8 and the outer filter element 6. A perforated ring 5 is provided on the inner bottom surface of the filter element connecting housing 1, with evenly distributed through holes on the perforated ring 5, located between the inner filter element 8 and the outer filter element 6. Oil filtered by the outer filter element 6 drips into the interior of the filter element connecting housing 1, and flows back into the oil tank through the through holes on the perforated ring 5 and the lower end of the inner filter element 8. An integrally connected connector 3 is provided at the lower end of the filter element connecting housing 1, with external threads on the outer side of the connector 3. An annular groove is provided on the outer side of the connection between the connector 3 and the filter element connecting housing 1, with a sealing ring 2 inside the annular groove. Two rubber sealing rings 9 are adhered to the inner top surface of the upper end cover 11, sealingly connecting the two rubber sealing rings 9 to the upper ends of the inner filter element 8 and the outer filter element 6. The tensioning element includes... The system includes a connecting rod 7, the lower end of which is welded to the center of the bracket 4. A connecting sleeve 10 is fixed to the center of the upper cover 11. The inner side of the connecting sleeve 10 is provided with an internal thread. The connecting sleeve 10 is connected to the upper end of the connecting rod 7 by a threaded connection. The connection and fixation between the connecting sleeve 10 and the connecting rod 7 makes the upper cover 11 press against the inner filter element 8 and the outer filter element 6, preventing rainwater from entering the oil tank and contaminating the oil when it rains. This avoids the defect of rainwater contamination of the oil when using the threaded external connection of the replaceable filter element commonly found on the market. The outer filter element 6 includes a filter element 62, which has a corrugated structure. The upper and lower ends of the filter element 62 are provided with connecting rings 61. The filter element 62 of the outer filter element 6 uses oil-water separation fiber filter media, while the inner filter element 8 uses wire mesh. Interlaced and wound on the inner support, shaped by the outer support, one end is bonded to the end cap and sealing strip, and the other end has the wire mesh exposed. The wire mesh density is 120-180 kg / m³. The outer filter layer 6 can separate the fine gas and liquid that were not separated by the inner filter element 8 when the oil-gas separation filter layer passes through the oil-gas separation filter layer. The coalesced oil enters the oil tank through the perforated ring. When the oil temperature inside the oil tank is too high, the gas filters the oil when it passes through the inner filter element 8 and the outer filter element 6. The replaceable filter element has an anti-splash air breather valve. When the gear reducer runs and splashes oil, the oil adheres to the metal mesh due to inertial collision when passing through the gas-liquid mesh. It gradually gathers into large droplets and then separates due to gravity. Most of the oil returns to the oil tank after passing through the inner filter element 8, avoiding external leakage and pollution of the oil. Moreover, it is more convenient to replace the filter element later.

[0013] During use: The reducer gears run and splash oil. When the oil temperature inside the tank is too high, the gas passes through the inner filter element 8 and the outer filter element 6 to filter the oil. The oil filtered by the outer filter element drips into the filter element connecting housing 1. The oil flows back into the tank through the through hole on the perforated ring 5 and the lower end of the inner filter element 8. When the reducer gears run and splash oil passes through the gas-liquid mesh, the oil adheres to the metal mesh due to inertia and gradually gathers into large droplets. Then, it settles and separates due to gravity. Most of the oil returns to the tank after passing through the inner filter element. When replacing the inner filter element 8 and the outer filter element 6, the upper end cover 11 is rotated to drive the connecting sleeve 10 to rotate, thereby separating the connecting sleeve 10 from the connecting rod 7. The upper end cover 11 and the connecting sleeve 10 are then removed. Then, the inner filter element 8 and the outer filter element 6 are replaced or cleaned. After the filter elements are installed, the connecting sleeve 10 is reconnected to the connecting rod 7. This completes the replacement or cleaning of the inner filter element 8 and the outer filter element 6, making cleaning more convenient.

[0014] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A replaceable filter element anti-splash air breather valve, comprising a filter element connecting housing (1), characterized in that: The lower end of the filter element connecting housing (1) has a tapered structure. A bracket (4) is provided inside the lower end of the filter element connecting housing (1). An inner filter element (8) and an outer filter element (6) are provided inside the filter element connecting housing (1). The upper ends of the inner filter element (8) and the outer filter element (6) are located outside the filter element connecting housing (1). The upper ends of the inner filter element (8) and the outer filter element (6) are flush. The lower ends of the inner filter element (8) and the outer filter element (6) are sealed to the bottom surface of the filter element connecting housing (1). Furthermore, an upper end cap (11) is provided between the upper ends of the inner filter element (8) and the outer filter element (6) to press them together. The outer diameter of the upper end cap (11) is larger than the outer diameter of the filter element connecting housing (1). A tensioning member is provided between the center of the upper end cap (11) and the center of the bracket (4). A perforated ring (5) is provided on the inner bottom surface of the filter element connecting housing (1). Through holes are evenly provided on the perforated ring (5), and the perforated ring (5) is located between the inner filter element (8) and the outer filter element (6).

2. The oil-splash-proof air breather valve with replaceable filter element according to claim 1, characterized in that: The lower end of the filter element connecting housing (1) is provided with an integrally connected connector (3). The outer side of the connector (3) is provided with an external thread. An annular groove is provided on the outer side of the connection between the connector (3) and the filter element connecting housing (1). A sealing ring (2) is provided inside the annular groove.

3. The oil-splash-proof air breather valve with replaceable filter element according to claim 1, characterized in that: Two rubber sealing rings (9) are pasted on the inner top surface of the upper cover (11), and the two rubber sealing rings (9) are sealed to the upper ends of the inner filter element (8) and the outer filter element (6).

4. The oil-splash-proof air breather valve with replaceable filter element according to claim 1, characterized in that: The tensioning component includes a connecting rod (7), the lower end of which is welded to the center of the bracket (4), and a connecting sleeve (10) is fixed to the center of the upper end cover (11). The inner side of the connecting sleeve (10) is provided with an internal thread, and the connecting sleeve (10) is connected to the upper end of the connecting rod (7) by means of threaded connection.

5. The oil-splash-proof air breather valve with replaceable filter element according to claim 1, characterized in that: The external filter element (6) includes a filter element (62), which has a corrugated structure, and connecting rings (61) are provided at the upper and lower ends of the filter element (62).

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