Pre-filtering device of oil-gas separator

Abstract

The utility model provides a pre-filtering device of an oil-gas separator, which belongs to the field of oil-gas separation, and comprises a shell, a gas inlet and a gas outlet distributed on two sides of the shell, an engine oil reflux inlet distributed on the bottom side of the shell, and a partition plate fixed in the shell and dividing the shell into a gas inlet cavity and a gas outlet cavity, the air inlet cavity is communicated with the air inlet, and the air outlet cavity is communicated with the air outlet; and the rotational flow pipe is arranged in the shell, penetrates through the partition plate and comprises a rotational flow part on the top side of the partition plate and a separation part on the bottom side of the partition plate. According to the oil-gas separator pre-filtering device, the centrifugal acting force of the rotational flow pipe is adopted, the flowing speed of airflow is increased, the contact area of oil gas and the inner wall of the rotational flow pipe is increased, oil gas can be better separated and filtered, and the engine oil filtering effect of the oil-gas separator pre-filtering device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil gas separation technical field especially relates to an oil gas separator prefiltering device. BACKGROUND

[0002] Oil gas separators are widely used in various internal combustion engines, which separate and treat the oil gas discharged by the engine, reduce oil consumption, and reduce environmental pollution.

[0003] Patent No. 202320811827.5 discloses a nozzle type engine oil gas separator prefiltering device, which belongs to the field of engine parts and comprises a transversely arranged prefiltering shell, a prefiltering air inlet pipe arranged at one end of the prefiltering shell, a prefiltering air outlet pipe arranged at the other end of the prefiltering shell, a prefiltering baffle arranged in the prefiltering shell, and an oil return channel arranged in the middle of the prefiltering shell. The vertical section of the prefiltering shell gradually increases and then gradually decreases from the prefiltering air inlet pipe to the prefiltering air outlet pipe.

[0004] The above device filters oil gas through the prefiltering baffle, but not all small oil droplets will collide with the prefiltering baffle when the oil gas passes through the prefiltering baffle, which affects the separation effect of the oil gas. INVENTION CONTENTS

[0005] In view of the above problems, the utility model provides an oil gas separator prefiltering device.

[0006] An oil gas separator prefiltering device comprises a shell, an air inlet and an air outlet are arranged on both sides of the shell, and an oil return port is arranged on the bottom side of the shell. The oil gas separator prefiltering device further comprises a partition plate fixed in the shell, which divides the shell into an air inlet cavity and an air outlet cavity, the air inlet cavity is communicated with the air inlet, and the air outlet cavity is communicated with the air outlet; a cyclone tube is arranged in the shell and passes through the partition plate, and comprises a cyclone part on the top side of the partition plate and a separation part on the bottom side of the partition plate.

[0007] In a preferred embodiment, the separation part comprises two concentric cylinders, the two concentric cylinders are fixed by a support rod, and a spiral wing plate is arranged on the inner concentric cylinder.

[0008] In a preferred embodiment, the partition plate comprises: a mounting plate, which is arranged perpendicularly to the shell and coincides with the central axis of the shell, and is used for mounting the cyclone tube; side partition plates, which are arranged on both sides of the mounting plate and are arranged on the top side and the bottom side of the mounting plate, and the side partition plate on the bottom side is provided with a through hole, and the through hole is arranged at the bottom end of the side partition plate.

[0009] In a preferred embodiment, the oil-gas separator pre-filter device further comprises: a plurality of first pre-filter plates arranged between the cyclone portion and the gas inlet, adjacent two first pre-filter plates are arranged at equal intervals, and any first pre-filter plate has a cross section in the shape of a bent plate with an included angle of α, and α is equal to 130-145°.

[0010] In a preferred embodiment, the oil-gas separator pre-filter device further comprises: a plurality of second pre-filter plates arranged between the separation portion and the gas outlet, adjacent two second pre-filter plates are arranged at equal intervals, and any second pre-filter plate has a cross section in the shape of a bent plate with an included angle of α, and α is equal to 130-145°.

[0011] In a preferred embodiment, any first pre-filter plate and / or second pre-filter plate has an included angle of β with the shell, and α is equal to 100-120°.

[0012] In a preferred embodiment, any first pre-filter plate and / or second pre-filter plate is provided with a felt layer.

[0013] In a preferred embodiment, the cyclone pipe is detachable from the top side of the shell.

[0014] In the present application, oil-gas enters the shell from the gas inlet, then passes through the gas cavity, and then enters the cyclone pipe, and the rotating airflow is generated in the cyclone hole of the cyclone portion at the top side of the cyclone pipe, and then the oil mist particles in the gas are subjected to the centrifugal force, move and settle at the bottom of the shell, so that oil-gas separation is realized, and finally the gas is discharged through the gas outlet, and the organic liquid is returned through the organic oil return port. The device uses the centrifugal force of the cyclone pipe to increase the flow speed of the airflow, increase the contact area between the oil-gas and the inner wall of the cyclone pipe, and is more conducive to separating and filtering the oil-gas, and improves the filtering effect of the oil-gas separator pre-filter device. BRIEF DESCRIPTION OF DRAWINGS

[0015] The following description of the exemplary embodiments will be read in conjunction with the accompanying drawings, in which the other characteristic features and advantages of the present application will become apparent. The accompanying drawings incorporated in and forming a part of the specification illustrate embodiments of the present application and, together with the description, serve to explain the principles of the application. In these drawings, like reference numerals are used to represent similar elements. The drawings in the following description are some embodiments of the present application, not all embodiments. For those skilled in the art, other drawings can be obtained from these drawings without creative labor.

[0016] Figure 1 The structure diagram of the oil-gas separator pre-filter device of the present application;

[0017] Figure 2 The structure diagram of the cyclone pipe of the oil-gas separator pre-filter device of the present application.

[0018] Fig. 10, housing; 11, air inlet; 12, air outlet; 13, organic oil return port; 20, partition plate; 100, air inlet cavity; 101, air outlet cavity; 30, cyclone tube; 31, cyclone part; 32, separation part; 321, concentric cylinder; 322, support rod; 323, spiral wing plate; 21, mounting plate; 22, side partition plate; 221, through hole; 40, first pre-filter plate; 41, second pre-filter plate. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model. It should be noted that, in the case of no conflict, the embodiments in the application and the features in the embodiments can be combined with each other at will.

[0020] The oil-gas separator pre-filter device will be described in detail below in combination with the drawings and embodiments. EMBODIMENT

[0021] An oil-gas separator pre-filter device includes a housing 10, air inlets 11 and air outlets 12 are distributed on both sides of the housing 10, and organic oil return ports 13 are distributed on the bottom side of the housing 10. The oil-gas separator pre-filter device further includes a partition plate 20 fixed in the housing 10, which divides the housing 10 into an air inlet cavity 100 and an air outlet cavity 101. The air inlet cavity 100 is in communication with the air inlets 11, and the air outlet cavity 101 is in communication with the air outlets 12. A cyclone tube 30 is arranged in the housing 10 and passes through the partition plate 20, including a cyclone part 31 on the top side of the partition plate 20 and a separation part 32 on the bottom side of the partition plate 20.

[0022] The cyclone tube 30 is detachable from the top side of the housing 10.

[0023] When working, oil gas enters the inside of the housing 10 from the air inlets 11, then passes through the air inlet cavity 100, and then enters the cyclone tube 30. Rotating gas flow is generated in the cyclone hole of the cyclone part 31 on the top side of the cyclone tube 30, and then

[0024] The oil mist particles in the gas are subjected to centrifugal force, move and settle to the bottom of the shell 10, oil-gas separation is realized, and finally the gas is discharged through the gas outlet 12 and the organic oil is returned through the organic oil return port 13. The device uses the centrifugal force of the cyclone tube 30 to increase the flow speed of the gas flow, increase the contact area between the oil gas and the inner wall of the cyclone tube 30, and is more conducive to separating and filtering the oil gas, thereby improving the filtering effect of the oil-gas separator pre-filter device. Embodiment

[0025] Embodiment 2 is a specific embodiment of Embodiment 1, and the improvements include that the separation part 32 includes two concentric cylinders 321, the two concentric cylinders 321 are fixed by a support rod 322, and a spiral wing plate 323 is arranged outside the inner concentric cylinder 321.

[0026] During operation, after the oil gas generates a rotating gas flow through the cyclone tube 30, when passing through the separation part 32, the gas flow rotates, and two rotating motions are generated inside and outside the concentric cylinder 321. At this time, the area of the separation part 32 is increased, so that the gas flow is more easily contacted with the shell wall under the centrifugal force, and the spiral wing plate 323 is additionally arranged to further improve the centrifugal force, thereby improving the filtering effect of the oil-gas separator pre-filter device. Embodiment

[0027] Embodiment 3 is a specific embodiment of Embodiment 1, and specifically includes that the partition plate 20 includes: a mounting plate 21, which is arranged perpendicularly to the shell 10 and coincides with the central axis of the shell 10, and is used for mounting the cyclone tube 30; and side partition plates 22, which are respectively arranged on both sides of the mounting plate 21 and are arranged on the top side and the bottom side of the mounting plate 21, and the side partition plate 22 on the bottom side is provided with a through hole 221, which is arranged at the bottom end of the side partition plate 22.

[0028] During operation, in the area of the gas inlet cavity 100, the oil gas liquid will adhere to the inner side of the shell 10 and flow to the organic oil return port 13 through the through hole 221 along the inner wall of the shell. Embodiment

[0029] Embodiment 4 is a specific embodiment of Embodiment 1, and specifically includes that the oil-gas separator pre-filter device further includes: a plurality of first pre-filter plates 40, which are arranged between the cyclone part 31 and the gas inlet 11, and adjacent two first pre-filter plates 40 are arranged at equal intervals, and the cross section of any first pre-filter plate 40 is in a bent plate structure, and the included angle of the bent plate is α, which is equal to 130-145°.

[0030] By additionally arranging the first pre-filter plate 40, the organic oil in the oil gas in the gas inlet cavity 100 area adheres to the first pre-filter plate 40 and flows to the organic oil return port 13 through the through hole 221 under the action of gravity, and the oil gas is filtered through several layers of first pre-filter plates 40, thereby further improving the filtering effect of the oil-gas separator pre-filter device.

[0031] Any first pre-filter plate 4 has an angle β with the shell 10, wherein α is equal to 100-120°.

[0032] Any first pre-filter plate 40 is provided with a felt layer.

[0033] The bent plate structure is integrally formed by two structure plates, and the length of the structure plate close to the top side of the shell is less than the length of the structure plate away from the top side of the shell. Embodiment

[0034] Embodiment 5 is a specific embodiment of Embodiment 1, specifically comprising: the gas separator pre-filter device further comprises: a plurality of second pre-filter plates 41 arranged between the separation part 32 and the gas outlet 12, adjacent two second pre-filter plates 41 are arranged at equal intervals, and any second pre-filter plate 41 has a cross-section in a bent plate structure, and the bent plate has an angle α, wherein α is equal to 130-145°.

[0035] By adding the second pre-filter plate 41, the oil gas in the gas outlet cavity 101 area has organic oil attached to the second pre-filter plate 41, and flows to the organic oil return port 13 through the through hole 221 under the action of gravity, and the filtering effect of the oil gas separator pre-filter device on the oil is further improved after filtering through several layers of second pre-filter plates 41.

[0036] Any second pre-filter plate 41 has an angle β with the shell 10, wherein α is equal to 100-120°.

[0037] Any second pre-filter plate 41 is provided with a felt layer.

[0038] The bent plate structure is integrally formed by two structure plates, and the length of the structure plate close to the top side of the shell is less than the length of the structure plate away from the top side of the shell.

[0039] It should be noted that, in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, no limitation arising

[0040] The above examples are only used to illustrate the technical solutions of the present application and are not limiting, and the present application has been described in detail only with reference to the preferred embodiments. It should be understood by those skilled in the art that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. An oil-gas separator pre-filter device, comprising a housing (10), an air inlet (11) and an air outlet (12) distributed on both sides of the housing (10), and an oil return port (13) distributed on the bottom side of the housing (10), characterized in that: The oil-gas separator pre-filter device also includes: a partition plate (20) fixed in the shell (10) to separate the shell (10) into an air inlet cavity (100) and an air outlet cavity (101), wherein the air inlet cavity (100) is in communication with the air inlet (11), and the air outlet cavity (101) is in communication with the air outlet (12); A cyclone tube (30) is arranged in the housing (10) and passes through the partition plate (20), and comprises a cyclone portion (31) on the top side of the partition plate (20) and a separation portion (32) on the bottom side of the partition plate (20).

2. The oil-gas separator pre-filter device according to claim 1, characterized in that: The separation portion (32) comprises two concentric cylinders (321), the two concentric cylinders (321) are fixed by a support rod (322), and a spiral wing plate (323) is provided on the inner concentric cylinder (321).

3. The oil-gas separator pre-filter device according to claim 1, characterized in that: The partition plate (20) comprises: A mounting plate (21) is arranged perpendicular to the housing (10) and coincides with the central axis of the housing (10), and is used for mounting the swirl tube (30); Side partitions (22) are respectively arranged on both sides of the mounting plate (21) and on the top and bottom sides of the mounting plate (21), and the side partition (22) on the bottom side is provided with a through hole (221), and the through hole (221) is opened at the bottom end of the side partition (22).

4. The oil-gas separator pre-filter device according to claim 1, characterized in that: The oil-gas separator pre-filter device also includes: A plurality of first pre-filter plates (40) are arranged between the swirl portion (31) and the air inlet (11), and two adjacent first pre-filter plates (40) are arranged at equal intervals, and a cross section of any first pre-filter plate (40) is a bent plate structure, and an angle of the bent plate is α, which is actually equal to 130-145°.

5. The oil-gas separator pre-filter device according to claim 4, characterized in that: The oil-gas separator pre-filter device also includes: A plurality of second pre-filter plates (41) are arranged between the separation portion (32) and the air outlet (12), and two adjacent second pre-filter plates (41) are arranged at equal intervals, and a cross section of any second pre-filter plate (41) is a bent plate structure, and the bent plate angle is α, which is actually equal to 130-145°.

6. The oil-gas separator pre-filter device according to claim 5, characterized in that: An included angle between any one of the first pre-filter plate (40) and / or the second pre-filter plate (41) and the housing (10) is β, wherein α is equal to 100-120°.

7. The oil-gas separator pre-filter device according to claim 5, characterized in that: Any one of the first pre-filter plate (40) and / or the second pre-filter plate (41) is provided with a felt layer.

8. The oil-gas separator pre-filter device according to claim 1, characterized in that: The cyclone tube (30) is detachable from the top side of the housing (10).

Images