CN216198570U - Oil-water separator - Google Patents

Abstract

The utility model belongs to the technical field of fuel oil cleaning, and discloses an oil-water separator which comprises a base, a shell, an upper end cover, a lower end cover, a central tube and a filter element, wherein the base and the shell form a cavity, the side wall of the upper end cover is connected with the inner wall of the shell, the side wall of the lower end cover is connected with the inner wall of the base in a sealing manner, the cavity is divided into a dirty oil cavity and a water collecting cavity by the lower end cover, an oil outlet hole is formed in the lower end cover, an oil outlet structure is arranged in the base, the oil outlet hole is sleeved on the circumferential direction of the oil outlet structure and is connected with the oil outlet structure in a sealing manner, a clean oil cavity in the central tube is communicated with the oil outlet structure, a hydrophobic net is arranged on the side wall of the central tube in a penetrating manner, the hydrophobic net and the central tube are integrally formed, the filter element is sleeved on the circumferential direction of the central tube, and two ends of the filter element are respectively abutted against the upper end cover and the lower end cover. The oil-water separator can effectively intercept impurities and water in fuel oil, improve the water separation efficiency of the fuel oil, and ensure the working efficiency and reliability of a fuel oil system.

Description

An oil-water separator

technical field

The utility model relates to the technical field of fuel oil cleaning, in particular to an oil-water separator.

Background technique

In recent years, due to the increasingly strict requirements of vehicle emission regulations, the cleanliness and high efficiency of the fuel system play a crucial role in the performance of the engine. Therefore, the functions of each component of the fuel system must be improved.

The oil-water separator is an important part of the engine fuel system. Its function is to filter out impurities, water and other pollutants in the fuel, provide clean fuel, prevent the rust and blockage of the fuel injection nozzle, and reduce the impact on the engine cylinder liner and piston rings. It ensures smooth operation of the engine, improves reliability and prolongs the service life of the engine. However, due to the influence of oil, the existing fuel filter often suffers from insufficient water separation or even failure after a period of use, making it difficult to ensure the normal operation of the fuel system.

Therefore, there is an urgent need for an oil-water separator to solve the above problems.

Utility model content

The purpose of the utility model is to provide an oil-water separator, which can effectively intercept impurities and water in the fuel oil, improve the efficiency of water separation, and ensure the high efficiency and reliability of the fuel oil system.

For this purpose, the utility model adopts the following technical solutions:

An oil-water separator, comprising a base, a casing, an upper end cover, a lower end cover, a central pipe and a filter element, the base and the casing are detachably connected, the base and the casing form a chamber, and the side of the upper end cover The wall is connected with the inner wall of the casing, the side wall of the lower end cover is sealed with the inner wall of the base, the lower end cover separates the chamber into a dirty oil chamber and a water collection chamber, and the lower end cover is provided with An oil outlet hole, an oil outlet structure is arranged in the base, the oil outlet hole is sleeved in the circumferential direction of the oil outlet structure, and the oil outlet hole is sealedly connected with the oil outlet structure, and the central pipe One end is in contact with the upper end cover, and the other end is connected with the oil outlet hole. The clean oil cavity inside the central pipe is communicated with the oil outlet structure, and the side wall of the central pipe is provided with a hydrophobic mesh. The hydrophobic mesh is integrally formed with the central pipe, the filter element is sleeved in the circumferential direction of the central pipe, and both ends of the filter element are respectively in contact with the upper end cover and the lower end cover.

Preferably, the outer wall of the central pipe is provided with a liquid guiding structure, the liquid guiding structure is disposed along the axial direction of the central pipe, and one end of the central pipe close to the lower end cap is provided with a first drainage hole, the The lower end cover is provided with a second drainage hole, the first drainage hole communicates with the second drainage hole, the second drainage hole communicates with the water collecting cavity, and the liquid guiding structure can guide water to the first drainage hole. A drain hole.

Preferably, the liquid guiding structure includes a plurality of first liquid guiding plates and a plurality of second liquid guiding plates, a plurality of the first liquid guiding plates are arranged at intervals along the axial direction of the central tube, and a plurality of the second liquid guiding plates are arranged at intervals along the axial direction of the central tube, the first liquid guide plate and the second liquid guide plate are arranged in alignment, and the first liquid guide plate and the second liquid guide plate form a V-shaped structure A liquid guiding groove is formed between the adjacent first liquid guiding plates and the second liquid guiding plates, and the liquid guiding groove near the first drainage hole communicates with the first drainage hole.

Preferably, a plurality of the liquid guiding grooves are arranged in alignment along the axial direction of the central pipe.

Preferably, the liquid guiding structure further includes a first support plate and a second support plate, one end of the first support plate and one end of the second support plate are connected to one end of the central pipe, and the first support plate is connected to one end of the central pipe. The other end of the support plate and the other end of the second support plate are connected to the other end of the central pipe, a plurality of the first liquid guide plates are respectively connected to the first support plate, and a plurality of the second liquid guide plates are respectively connected to the first support plate. The plates are respectively connected with the second support plates.

Preferably, the liquid guiding structure further includes a plurality of third supporting plates, and the third supporting plates are arranged between two adjacent liquid guiding grooves.

Preferably, the inner wall of the base is provided with a first sealing surface along the circumferential direction, the side wall of the lower end cover is provided with a first sealing groove along the circumferential direction, and the first sealing groove is provided with a first sealing ring, and The first sealing ring is in contact with the first sealing surface.

Preferably, the outer wall of the oil outlet structure is provided with a second sealing surface coaxial with the first sealing surface in the circumferential direction, the oil outlet hole is provided with a second sealing groove in the circumferential direction, the second sealing surface is A second sealing ring is arranged in the sealing groove, and the second sealing ring is in contact with the second sealing surface.

Preferably, a vertical surface, a supporting surface and a horizontal surface are arranged in the oil outlet hole, the supporting surface is arranged above the vertical surface, the horizontal surface is arranged below the vertical surface, and the central pipe A snap portion is provided near one end of the lower end cover, the snap portion extends into the oil outlet, and the end face of the snap portion abuts against the support surface, the end face and the vertical face and the lateral surface forms the second sealing groove.

Preferably, a circular tube is arranged in the oil cleaning chamber along the axial direction of the central tube, one end of the circular tube is sealedly connected to the end of the central tube close to the lower end cap, and the other end is connected to the upper end cap There are gaps in between.

The beneficial effects of the present utility model:

The oil-water separator provided by the utility model, when in use, passes the fuel oil into the dirty oil cavity, the filter element filters the impurities in the fuel oil and collects the small particle water in the fuel oil, and the small particle water in the fuel oil is collected when passing through the filter element. The central pipe supports the filter element to increase the compressive strength of the filter element, and then the fuel passes through the hydrophobic net that runs through the side wall of the central pipe. The fuel in the clean oil chamber flows out through the oil outlet structure for the use of the fuel system. By integrally forming the hydrophobic net and the central pipe, the number of parts is reduced, the assembly of components is simple, and the cost is low. The oil-water separator can effectively intercept impurities and water in the fuel oil, improve the efficiency of water separation in the fuel oil, and ensure the high efficiency and reliability of the fuel system.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following will briefly introduce the accompanying drawings used in the description of the embodiments of the present invention. Obviously, the drawings in the following description are only of the present invention. In some embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to the content of the embodiments of the present invention and these drawings without creative efforts.

Fig. 1 is the structural representation of the oil-water separator provided by the utility model;

Fig. 2 is the structural representation one of the central pipe in the present utility model;

Fig. 3 is the structural representation two of the central pipe in the present utility model;

Fig. 4 is the structural schematic diagram 1 of the middle and lower end caps of the present invention;

Fig. 5 is the second structural schematic diagram of the middle and lower end caps of the present invention;

Fig. 6 is the structural representation of the base in the present utility model;

Fig. 7 is a partial enlarged view at A in 1;

FIG. 8 is a partial enlarged view of B in 1. FIG.

In the picture:

100, base; 101, oil outlet structure; 1011, second sealing surface; 102, first sealing surface; 200, shell; 300, upper end cover; 400, lower end cover; 401, oil outlet; 4011, vertical surface; 4012 4013, transverse surface; 402, the second drainage hole; 403, the first sealing groove; 404, the first sealing ring; 405, the second sealing groove; 406, the second sealing ring; 500, the center pipe; 501 503, the first liquid guide plate; 5032, the second liquid guide plate; 5033, the liquid guide groove; 5034, the first support plate; 5035, the second support plate; 5036, the third support plate; 504, the first drainage hole; 505, the clip part; 5051, the end face; 506, the round pipe; 600, the filter element; 700, the chamber; 701, the dirty oil chamber; cavity.

Detailed ways

The present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the present invention.

In the description of the present invention, unless otherwise expressly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or a fixed connection. It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be an internal connection between two elements or an interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features The features are not in direct contact but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

In the description of this embodiment, the terms "up", "down", "left", "right" and other azimuth or positional relationships are based on the azimuth or positional relationship shown in the accompanying drawings, which are only for the convenience of description and simplifying operations. Rather than indicating or implying that the indicated device or element must have a particular orientation, be constructed and operate in a particular orientation, it should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for distinction in description, and have no special meaning.

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the present invention, but should not be construed as a limitation of the present invention.

The technical solutions of the present utility model will be further described below with reference to the accompanying drawings and through specific embodiments.

As shown in FIGS. 1 to 8 , this embodiment provides an oil-water separator, including a base 100 , a casing 200 , an upper end cover 300 , a lower end cover 400 , a central pipe 500 and a filter element 600 , wherein the base 100 and the casing 200 can be The base 100 and the casing 200 form a chamber 700, the side wall of the upper end cover 300 is connected with the inner wall of the casing 200, the side wall of the lower end cover 400 is sealed with the inner wall of the base 100, and the lower end cover 400 separates the chamber 700 from the dirty The oil chamber 701 and the water collecting chamber 702, the lower end cover 400 is provided with an oil outlet hole 401, the base 100 is provided with an oil outlet structure 101, and the oil outlet hole 401 is sleeved in the circumferential direction of the oil outlet structure 101, and the oil outlet hole 401 and The oil outlet structure 101 is sealed and connected, one end of the central pipe 500 is in contact with the upper end cover 300, the other end of the central pipe 500 is connected with the oil outlet hole 401, and the clean oil chamber 501 inside the central pipe 500 is communicated with the oil outlet structure 101. The side wall of 500 is provided with a hydrophobic mesh 502, which is integrally formed with the central pipe 500, the filter element 600 is sleeved in the circumferential direction of the central pipe 500, and the two ends of the filter element 600 are respectively in contact with the upper end cover 300 and the lower end cover 400. , the central pipe 500 supports the filter element 600 .

In the oil-water separator provided in this embodiment, when in use, the fuel is passed into the dirty oil cavity 701 , the filter element 600 filters the impurities in the fuel and collects small particles of water in the fuel, and the small particles of water in the fuel pass through the filter element 600 The central pipe 500 supports the filter element 600 to increase the pressure resistance of the filter element 600, and then the fuel passes through the hydrophobic net 502 arranged through the side wall of the central pipe 500, and the hydrophobic net 502 intercepts the large particles of water collected by the filter element 600. , the fuel enters the clean oil cavity 501 of the central pipe 500, and the fuel in the clean oil cavity 501 flows out through the oil outlet structure 101 for use in the fuel system. The assembly of components is simple and the cost is low. The oil-water separator can effectively intercept impurities and water in the fuel oil, improve the efficiency of water separation in the fuel oil, and ensure the high efficiency and reliability of the fuel system.

In this embodiment, the outer wall of the central pipe 500 is provided with a liquid guiding structure 503 , and the liquid guiding structure 503 is disposed along the axial direction of the central pipe 500 . The end of the central pipe 500 close to the lower end cover 400 is provided with a first drainage hole 504 , and the lower end cover 400 is provided with a first drainage hole 504 . There is a second drainage hole 402 , the first drainage hole 504 communicates with the second drainage hole 402 , the second drainage hole 402 communicates with the water collecting cavity 702 , and the liquid guiding structure 503 can guide water to the first drainage hole 504 . Through the above structure, the water intercepted by the hydrophobic net 502 flows to the first drainage hole 504 through the guide of the liquid guiding structure 503, and then flows into the water collecting cavity 702 through the second drainage hole 402, so as to prevent the water from staying in the dirty oil cavity 701 and affecting the filter element 600 and the interception effect of the hydrophobic mesh 502.

In a specific embodiment, the liquid guiding structure 503 includes a plurality of first liquid guiding plates 5031 and a plurality of second liquid guiding plates 5032 . The liquid plates 5032 are arranged at intervals along the axial direction of the central tube 500 , the first liquid guiding plate 5031 and the second liquid guiding plate 5032 are arranged in alignment, and the first liquid guiding plate 5031 and the second liquid guiding plate 5032 form a V-shaped structure, which is opposite to the second liquid guiding plate 5032 . A liquid guiding groove 5033 is formed between the adjacent first liquid guiding plate 5031 and the second liquid guiding plate 5032 , and the liquid guiding groove 5033 close to the first drainage hole 504 communicates with the first drainage hole 504 . In use, because the density of the water intercepted by the hydrophobic net 502 is higher than that of the fuel oil, the water flows downward along the V-shaped structure formed by the first liquid guide plate 5031 and the second liquid guide plate 5032 and through the liquid guide groove 5033, reducing the The flow path of water on the liquid-conducting structure 503 avoids the situation that water may pass through the hydrophobic mesh 502 under the action of pressure, resulting in poor water separation effect. As a preferred technical solution, several liquid guide grooves 5033 are aligned along the axial direction of the central pipe 500. Through the above structure, the intercepted water flows directly from top to bottom along the liquid guide grooves 5033 to the water collecting cavity 702, ensuring that Water separation effect.

Optionally, the liquid guiding structure 503 further includes a first support plate 5034 and a second support plate 5035, one end of the first support plate 5034 and one end of the second support plate 5035 are connected to one end of the central pipe 500, and the first support plate 5034 The other end of the second support plate 5035 is connected to the other end of the central pipe 500, a plurality of first liquid guide plates 5031 are respectively connected to the first support plate 5034, and a plurality of second liquid guide plates 5032 are respectively connected to the second support plate 5035 connection. By connecting the two ends of the first support plate 5034 and the two ends of the second support plate 5035 with the two ends of the central pipe 500, the stability of the first support plate 5034 and the second support plate 5035 is ensured; The plates 5031 are respectively connected with the first support plates 5034. The first support plates 5034 support the first liquid guide plate 5031 to ensure the stability of the first liquid guide plate 5031. Several second liquid guide plates 5032 are respectively connected to the second support plate 5031. The plates 5035 are connected, and the second support plate 5035 supports the second liquid guide plate 5032 to ensure the stability of the second liquid guide plate 5032 . As a preferred technical solution, the liquid guiding structure 503 further includes a plurality of third supporting plates 5036 , and the third supporting plates 5036 are arranged between two adjacent liquid guiding grooves 5033 .

In a specific embodiment, a circular tube 506 is disposed in the clean oil chamber 501 of the central tube 500 along the axial direction of the central tube 500. There is a gap between the other end of 506 and the upper end cap 300 . During use, after the fuel enters the clean oil chamber 501 through the hydrophobic net 502, it will stay in the area between the circular tube 506 and the hydrophobic net 502. As the fuel entering this area increases, the fuel level rises, and the fuel flows through the circle. The gap between the pipe 506 and the upper end cover 300 flows to the oil outlet structure 101 through the channel in the circular pipe 506 . Through the above structure, during the rise of the fuel oil level, the water in the fuel oil that is not intercepted by the hydrophobic net 502 will be deposited downward because its density is greater than that of the fuel oil, and the fuel oil will flow upward and through the gap, thereby further improving the water seperate effect.

In this embodiment, the inner wall of the base 100 is provided with a first sealing surface 102 in the circumferential direction, the side wall of the lower end cover 400 is provided with a first sealing groove 403 in the circumferential direction, and a first sealing ring 404 is provided in the first sealing groove 403. And the first sealing ring 404 is in contact with the first sealing surface 102 . Through the above structure, the sealing performance between the side wall of the lower end cover 400 and the inner wall of the base 100 can be improved, and the circulation between the dirty oil chamber 701 and the water collecting chamber 702 can be blocked.

Optionally, the outer wall of the oil outlet structure 101 is provided with a second sealing surface 1011 coaxial with the first sealing surface 102 in the circumferential direction, and the oil outlet hole 401 is provided with a second sealing groove 405 in the circumferential direction. A second sealing ring 406 is disposed inside 405 , and the second sealing ring 406 is in contact with the second sealing surface 1011 . Through the above structure, the sealing performance between the oil outlet hole 401 and the oil outlet structure 101 can be improved, and the circulation between the clean oil chamber 501 and the water collecting chamber 702 can be blocked; the second sealing surface 1011 and the first sealing surface 102 are coaxial. The arrangement can ensure the sealing effect of the second sealing ring 406 , and because the second sealing surface 1011 is coaxial with the first sealing surface 102 , it is more labor-saving when inserting and pulling out the filter element 600 .

In a specific embodiment, the oil outlet hole 401 is provided with a vertical surface 4011, a supporting surface 4012 and a transverse surface 4013, the supporting surface 4012 is provided above the vertical surface 4011, the transverse surface 4013 is provided below the vertical surface 4011, and the center One end of the tube 500 close to the lower end cover 400 is provided with a clamping part 505, the clamping part 505 extends into the oil outlet hole 401, and the end surface 5051 of the clamping part 505 is in contact with the supporting surface 4012, the end surface 5051, the vertical surface 4011 and the horizontal surface 4013 forms the second sealing groove 405. Through the above structure, the center tube 500 and the lower end cover 400 together form the second sealing groove 405, which can well ensure the coaxiality of the first sealing ring 404 and the second sealing ring 406, so that the first sealing ring 404 and the second sealing ring 406 can be well coaxial. The sealing effect of the sealing ring 406 is improved, and the insertion and removal of the filter element 600 is very labor-saving.

When the oil-water separator provided in this embodiment is used, the first sealing ring 404 is used to block the flow between the dirty oil chamber 701 and the water collecting chamber 702 , and the second sealing ring 406 is used to block the water collecting chamber 702 and the clean oil chamber 501 The filter element 600 is used to filter the impurities in the fuel oil in the dirty oil chamber 701 and collect the water in the fuel oil. The central pipe 500 is used to support the filter element 600 and increase the compressive strength of the filter element 600. The hydrophobic net 502 is used to intercept the filter element. 600 gathered water. When working, first, the fuel in the dirty oil chamber 701 passes through the filter element 600, the impurities in the fuel are filtered and intercepted by the filter element 600, and the small particles of water in the fuel are aggregated into large particles of water when passing through the filter element 600, and secondly, the fuel passes through the filter element 600. The hydrophobic net 502 on the central pipe 500 flows to the clean oil chamber 501, and the large particles of water collected by the filter element 600 are intercepted by the hydrophobic net 502. Finally, because the density of the water is higher than that of the fuel oil, the water intercepted by the hydrophobic net 502 flows along the first guide. The liquid plate 5031 and the second liquid guide plate 5032 then flow downward into the water collecting cavity 702 through the liquid guide groove 5033 , the first drainage hole 504 and the second drainage hole 402 in sequence.

The oil-water separator provided in this embodiment has the following advantages: in this embodiment, the hydrophobic mesh 502 is integrally formed on the central pipe 500 through a mold, so that the number of parts is reduced, the assembly of components is simple, and the cost is low; this embodiment adopts the first liquid guide The plate 5031 and the second liquid guide plate 5032 form a V-shaped structure, and the intercepted water flows along the first liquid guide plate 5031 and the second liquid guide plate 5032, and flows to the water collecting chamber from top to bottom through the liquid guide groove 5033. 702, to ensure the water separation effect; in this embodiment, the second sealing groove 405 is set on the lower end cover 400, which can well ensure the coaxiality of the first sealing ring 404 and the second sealing ring 406, so that the first sealing ring The sealing effect of the 404 and the second sealing ring 406 is good, and the insertion and removal of the filter element 600 becomes more labor-saving.

Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. There is no need and cannot be exhaustive of all implementations here. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims (10)

1. The oil-water separator is characterized by comprising a base (100), a shell (200), an upper end cover (300), a lower end cover (400), a central pipe (500) and a filter element (600), wherein the base (100) is detachably connected with the shell (200), the base (100) and the shell (200) form a cavity (700), the side wall of the upper end cover (300) is connected with the inner wall of the shell (200), the side wall of the lower end cover (400) is hermetically connected with the inner wall of the base (100), the lower end cover (400) divides the cavity (700) into a dirty oil cavity (701) and a water collecting cavity (702), an oil outlet (401) is formed in the lower end cover (400), an oil outlet structure (101) is arranged in the base (100), the oil outlet (401) is sleeved on the circumferential direction of the oil outlet structure (101), and the oil outlet (401) is hermetically connected with the oil outlet structure (101), the one end of center tube (500) with upper end cover (300) butt, the other end with oil outlet (401) are connected, inside clean oil pocket (501) of center tube (500) with oil outlet structure (101) communicate with each other, the lateral wall of center tube (500) runs through and is provided with hydrophobic net (502), hydrophobic net (502) with center tube (500) integrated into one piece, filter core (600) cover is established in the circumference of center tube (500), just the both ends of filter core (600) respectively with upper end cover (300) and lower end cover (400) butt.

2. The oil-water separator according to claim 1, wherein a liquid guiding structure (503) is arranged on an outer wall of the central tube (500), the liquid guiding structure (503) is arranged along an axial direction of the central tube (500), a first drain hole (504) is arranged at one end of the central tube (500) close to the lower end cover (400), a second drain hole (402) is arranged on the lower end cover (400), the first drain hole (504) is communicated with the second drain hole (402), the second drain hole (402) is communicated with the water collecting cavity (702), and the liquid guiding structure (503) can guide water to the first drain hole (504).

3. The oil-water separator according to claim 2, wherein the liquid guiding structure (503) comprises a plurality of first liquid guiding plates (5031) and a plurality of second liquid guiding plates (5032), the plurality of first liquid guiding plates (5031) are arranged at intervals along the axial direction of the center pipe (500), the plurality of second liquid guiding plates (5032) are arranged at intervals along the axial direction of the center pipe (500), the first liquid guiding plates (5031) and the second liquid guiding plates (5032) are arranged in an aligned manner, the first liquid guiding plates (5031) and the second liquid guiding plates (5032) form a V-shaped structure, a liquid guiding groove (5033) is formed between the adjacent first liquid guiding plates (5031) and the adjacent second liquid guiding plates (5032), and the liquid guiding groove (5033) near the first drainage hole (504) is communicated with the first drainage hole (504).

4. The separator according to claim 3, wherein the liquid guiding grooves (5033) are aligned with each other along the axis of the central tube (500).

5. The separator according to claim 3, wherein the liquid guide structure (503) further comprises a first support plate (5034) and a second support plate (5035), one end of the first support plate (5034) and one end of the second support plate (5035) are connected to one end of the central tube (500), the other end of the first support plate (5034) and the other end of the second support plate (5035) are connected to the other end of the central tube (500), the first liquid guide plates (5031) are respectively connected to the first support plate (5034), and the second liquid guide plates (5032) are respectively connected to the second support plate (5035).

6. The separator as claimed in claim 3, wherein the liquid guiding structure (503) further comprises a plurality of third supporting plates (5036), and the third supporting plates (5036) are disposed between two adjacent liquid guiding grooves (5033).

7. The oil-water separator according to claim 1, wherein a first sealing surface (102) is circumferentially formed on an inner wall of the base (100), a first sealing groove (403) is circumferentially formed on a side wall of the lower end cover (400), a first sealing ring (404) is arranged in the first sealing groove (403), and the first sealing ring (404) abuts against the first sealing surface (102).

8. The oil-water separator according to claim 7, wherein a second sealing surface (1011) coaxial with the first sealing surface (102) is circumferentially formed on an outer wall of the oil outlet structure (101), a second sealing groove (405) is circumferentially formed in the oil outlet hole (401), a second sealing ring (406) is arranged in the second sealing groove (405), and the second sealing ring (406) abuts against the second sealing surface (1011).

9. The oil-water separator according to claim 8, characterized in that a vertical surface (4011), a support surface (4012) and a transverse surface (4013) are arranged in the oil outlet hole (401), the support surface (4012) is arranged above the vertical surface (4011), the transverse surface (4013) is arranged below the vertical surface (4011), a clamping portion (505) is arranged at one end, close to the lower end cover (400), of the central pipe (500), the clamping portion (505) extends into the oil outlet hole (401), an end surface (5051) of the clamping portion (505) abuts against the support surface (4012), and the end surface (5051), the vertical surface (4011) and the transverse surface (4013) form the second sealing groove (405).

10. The oil-water separator as claimed in any one of claims 1-9, wherein a circular tube (506) is arranged in the oil cleaning chamber (501) along the axial direction of the central tube (500), one end of the circular tube (506) is connected with one end of the central tube (500) close to the lower end cover (400) in a sealing manner, and a gap exists between the other end of the circular tube and the upper end cover (300).

Images