Anti-splashing centrifugal oil-gas separator

Abstract

The invention discloses an anti-splashing centrifugal oil-gas separator which comprises a shell provided with a partition plate, the partition plate divides the shell into a first cavity and a second cavity, the partition plate is provided with a first bearing seat, a first bearing is arranged in the first bearing seat, and the shell is provided with a first outlet; comprising a rotating shaft and a rotor arranged on the rotating shaft in a sleeving mode, the rotating shaft is arranged in the first bearing in a penetrating mode, and the rotor is located in the first cavity; the exhaust pipe is in sealed connection with the first outlet, and a gas collection port is formed in the part, located in the shell, of the exhaust pipe; the baffle is provided with a first through hole, the baffle is arranged on the rotating shaft in a sleeving mode and located between the rotor and the partition plate, the outer edge of the baffle extends towards the partition plate to form a first side plate, and a first oil return channel for oil liquid to pass through is formed between the first side plate and the partition plate. According to the separator, a baffle is arranged on a partition plate, and an oil separation cavity wrapping a first bearing is formed. The thrown-out oil liquid is blocked in the oil separation cavity by the oil separation cover, so that the thrown-out oil liquid is prevented from being in contact with gas moving at a high speed in the first cavity again.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fluid purification, in particular to a centrifugal oil-gas separator capable of preventing splashing. BACKGROUND

[0002] In the oil return structure of the existing oil-gas separator, the separated oil flows down along the shell wall during the operation of the oil-gas separation device, is collected to the center part through the upper surface of the bearing seat, and is discharged to the lower cavity through the gap between the inner and outer rings of the bearing. However, during the operation of the separator, the bearing is in a high-speed rotating state, and the oil flowing to the gap between the inner and outer rings of the bearing is easily splashed, causing the oil to mix with the gas again, resulting in secondary pollution and reducing the separation efficiency.

[0003] CN223510994U discloses a structure for preventing oil splashing and an oil-gas separator. The structure for preventing oil splashing uses a protective cover to cover the bearing, which prevents the oil from being splashed by the high-speed rotating bearing. However, during the operation of the separator, the gas inside the shell is also in a high-speed rotating state due to the high-speed rotation of the rotor. The oil flowing along the surface of the partition plate is easily blown up by the high-speed moving gas, causing the separated oil to mix with the gas again.

[0004] CN115596534B discloses an oil-gas separator and an engine. During the operation of the oil-gas separator disclosed in the application, the oil is splashed by the oil-gas separation filter element to the splashing channel through centrifugal force, and flows into the storage groove along the splashing channel. The oil in the storage groove is separated by the oil-water separation filter material, and then flows into the cavity through the inflow hole. Under the high-speed rotation of the oil-gas separation filter element, the oil will also splash into the space surrounded by the oil-gas separation filter element, the outer peripheral wall and the bottom sealing plate. If the gap between the center through hole of the bottom sealing plate of the gas outlet cavity assembly and the rotating shaft assembly is too large in the scheme, the oil cannot be blocked from being splashed by the bearing. If the gap between the center through hole of the bottom sealing plate of the gas outlet cavity assembly and the rotating shaft assembly is too small or even dynamically sealed, the oil accumulated in the space cannot enter the cavity, but can only be splashed by the rotating shaft assembly to mix with the gas, causing secondary pollution, or be directly splashed into the gas outlet to be discharged, causing waste. SUMMARY

[0005] In order to overcome the defects in the prior art, the present application provides a centrifugal oil-gas separator capable of preventing splashing. The centrifugal oil-gas separator comprises a partition plate, a first bearing, a second bearing, a first cavity, a second cavity, a first oil return channel, a first shaft, a second shaft, a first oil-gas separation filter element, a second oil-gas separation filter element, a splashing channel, a storage groove, an oil-water separation filter material, an inflow hole, a gas outlet, a first shaft seal, a second shaft seal, a first bearing seal, a second bearing seal, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole, a second oil return hole, a first oil return channel, a second oil return channel, a first oil return groove, a second oil return groove, a first oil return hole

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: a splash-proof centrifugal oil-gas separator, comprising:

[0007] The housing has a partition inside, which divides the housing into a first cavity and a second cavity. The partition is provided with a first bearing seat, and the first bearing seat is provided with a first bearing. The housing is provided with a first outlet.

[0008] An oil-gas separation device, comprising a rotating shaft and a rotor sleeved on the rotating shaft, the rotating shaft passing through a first bearing, and the rotor located within a first cavity;

[0009] An exhaust pipe is located below the oil-gas separator and is sealed to the first outlet. The portion of the exhaust pipe inside the housing is provided with a gas collection port.

[0010] A baffle is provided with a first through hole. The baffle is sleeved on the rotating shaft through the first through hole and is located between the rotor and the partition. The outer edge of the baffle extends toward the partition to form a first side plate. A first return oil channel is formed between the first side plate and the partition to allow oil to pass through.

[0011] The baffle forms the edge of the first through hole and extends along the axial direction of the rotating shaft by a first predetermined length to form a second side plate. The baffle has a second oil return channel that passes through the baffle along the axial direction of the rotating shaft. The baffle includes a first plate and a second plate. The first plate is located between the exhaust pipe and the partition. The second plate is connected to the first plate. At least a portion of the second plate is inclined toward the oil-gas separator. The first through hole is provided on the second plate. The outer edge of the baffle extends toward the side away from the partition by a third predetermined length to form a fourth side plate. The fourth side plate has a gap with the inner wall of the housing. The fourth side plate has a second through hole for the exhaust pipe to pass through.

[0012] Through the above technical solution, the anti-splash centrifugal oil-gas separator is equipped with an oil-separating cover consisting of a baffle and a first side plate on the partition plate, forming an oil-separating cavity that covers the first bearing. The separated oil flows down the inner wall of the shell and enters the oil-separating cavity through the first oil return channel. The oil that is thrown out due to the rotation of the first bearing is blocked by the oil-separating cover in the oil-separating cavity, preventing the thrown-out oil from coming into contact with the high-speed moving gas in the first cavity again, thereby preventing the separated oil from being secondary contaminated, and also preventing the oil from being thrown into the gas collecting port. After the oil settles in the oil-separating cavity, it is discharged into the second cavity through the gap between the inner and outer rings of the bearing.

[0013] Meanwhile, the separated oil flows down along the gap between the inner wall of the shell and the fourth side plate, and then enters the oil separator through the first oil return channel, which can prevent the oil from flowing into the gas collection port along the exhaust pipe.

[0014] By using the above technical solution, the second side plate increases the relative area between the oil separator and the rotating shaft, further reducing the possibility of oil being thrown out from the gap between the rotating shaft and the oil separator.

[0015] Furthermore, the second plate forms the edge of the first through hole and extends a second predetermined length along the axial direction of the rotating shaft to form a third side plate.

[0016] Through the above technical solution, the increased gap between the oil separator and the first bearing by the inclined second plate further reduces the possibility of oil being thrown out from the gap between the shaft and the oil separator.

[0017] Furthermore, the first side plate or the housing is provided with a positioning block, which is located between the inner wall of the first side plate and the housing.

[0018] Through the above technical solution, the positioning block can fix the oil separator cover relative to the housing.

[0019] Furthermore, the housing includes:

[0020] A first housing, having an inlet and a first outlet, and a second bearing housing inside the first housing, with a second bearing housed therein;

[0021] A second housing is sealed to the first housing, and the second housing is provided with a second outlet for liquid to flow out.

[0022] The partition is disposed between the first housing and the second housing, and the rotating shaft passes through the first bearing and the second bearing.

[0023] Furthermore, the distance between the fourth side plate and the inner wall of the housing is greater than 1 mm and less than 2 / 3 of the housing radius. If the distance is less than 1 mm, the separated oil cannot flow freely between the fourth side plate and the inner wall of the housing. If the distance is greater than 2 / 3 of the housing radius, the exhaust pipe's gas collection port will be too close to the rotating shaft. Since the gas density inside the housing increases from the rotation axis due to high rotation, the proximity of the gas collection port to the rotating shaft is detrimental to the discharge of the separated waste gas.

[0024] Furthermore, the upper edge of the fourth side plate does not exceed the lower edge of the rotor to prevent the separated oil from directly entering the space enclosed by the rotor and the fourth side plate.

[0025] By employing the above technical solutions, the beneficial effects of the present invention are as follows:

[0026] 1. The anti-splash centrifugal oil-gas separator disclosed in this application has an oil-separating cover composed of a baffle and a first side plate on the partition plate, which encloses an oil-separating cavity that covers the first bearing. The separated oil flows down along the inner wall of the shell and enters the oil-separating cavity through the first oil return channel. The oil that is thrown out due to the rotation of the first bearing is blocked in the oil-separating cavity by the oil-separating cover, which prevents the thrown-out oil from coming into contact with the high-speed moving gas in the first cavity again, thereby preventing the separated oil from being contaminated secondary, and also preventing the oil from being thrown into the gas collecting port.

[0027] 2. This application is provided with a fourth side plate that is connected to the baffle and has a gap between it and the inner side wall of the housing. The exhaust pipe passes through the second through hole of the fourth side plate. The separated oil flows down along the gap between the inner side wall of the housing and the fourth side plate, and then enters the oil separation chamber through the first oil return channel. This can prevent the oil from flowing into the gas collection port along the exhaust pipe.

[0028] To make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the outer shell of the anti-splash centrifugal oil-gas separator in an embodiment of the present invention;

[0031] Figure 2 This is a cross-sectional view of the anti-splash centrifugal oil-gas separator in an embodiment of the present invention;

[0032] Figure 3 This is a cross-sectional view of a splash-proof centrifugal oil-gas separator with a raised oil-blocking cover in an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the structure of the oil separator in an embodiment of the present invention.

[0034] The reference numerals in the above figures are as follows: 1. Housing; 11. First housing; 111. First bearing; 112. First outlet; 113. Second bearing; 114. Inlet; 12. Second housing; 2. Partition; 31. Shaft; 32. Rotor; 4. Exhaust pipe; 41. Air collection port; 5. Baffle; 51. First side plate; 511. Oil return hole; 512. Positioning block; 52. Second side plate; 53. First plate; 54. Second plate; 55. Third plate; 56. Third side plate; 57. Fourth side plate; 571. Second through hole; 58. Second oil return channel; 59. First through hole. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] It should be noted that in the description of this invention, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0037] Example: This example discloses a splash-proof centrifugal oil-gas separator, comprising:

[0038] The housing 1 has a partition 2 inside, which divides the housing into a first cavity and a second cavity. The partition 2 is provided with a first bearing seat, and a first bearing 111 is provided inside the first bearing seat. The housing 1 is provided with a first outlet 112.

[0039] An oil-gas separation device, comprising a rotating shaft 31 and a rotor 32 sleeved on the rotating shaft, wherein the rotating shaft 31 passes through the first bearing 111 and the rotor 32 is located in the first cavity;

[0040] Exhaust pipe 4, which is sealed to the first outlet 112, and the portion of exhaust pipe 4 located inside the housing 1 is provided with a gas collection port 41, which is used to collect the gas separated by the oil-gas separator.

[0041] Baffle 5, which has a first through hole 59, is sleeved on the rotating shaft 31 through the first through hole 59 and is located between the rotor 32 and the partition 2. The outer edge of the baffle 5 extends toward the partition 2 to form a first side plate 51, and a first return oil channel for oil supply is formed between the first side plate 51 and the partition 2.

[0042] In some feasible embodiments, the first side plate 51 contacts the partition plate 2, and a plurality of oil return holes 511 are provided on the surface of the first side plate 51 in contact with the partition plate 2. Each oil return hole 511 is spaced apart along the periphery of the first side plate 51 to form the first oil return channel.

[0043] Through the above technical solution, the anti-splash centrifugal oil-gas separator has an oil-separating cover composed of a baffle 5 and a first side plate 51 on the partition 2, forming an oil-separating cavity that covers the first bearing 111. The separated oil flows down the inner wall of the shell 1 and enters the oil-separating cavity through the first oil return channel. The oil that is thrown out due to the rotation of the first bearing 111 is blocked in the oil-separating cavity by the oil-separating cover, preventing the thrown-out oil from coming into contact with the high-speed moving gas in the first cavity again, thereby preventing the separated oil from being secondary contaminated, and also preventing the oil from being thrown into the gas collecting port 41. After the oil in the oil-separating cavity settles, it is discharged to the second cavity through the gap between the inner and outer rings of the bearing.

[0044] Combination Figure 1 , 2 As shown, the housing 1 includes:

[0045] A first housing 11 is provided with an inlet 114 and a first outlet 112. A second bearing seat is provided inside the first housing 11, and a second bearing 113 is provided inside the second bearing seat. The inlet 114 is used to receive the oil-gas mixture to be separated.

[0046] The second housing 12 is sealed to the first housing 11, and the second housing 12 is provided with a second outlet for liquid to flow out.

[0047] The first housing 11 and the second housing 12 are connected and fixed by bolts and sealing rings. The partition 2 is disposed between the first housing 11 and the second housing 12. The rotating shaft 31 passes through the first bearing 111 and the second bearing 113. The portion of the rotating shaft 31 that extends out of the first bearing 111 is used to connect to a drive device. Under the drive of the drive device, the rotor 32 rotates with the rotating shaft 31, thereby separating oil and gas.

[0048] In some feasible embodiments, such as Figure 2As shown, the baffle 5 forms the edge of the first through hole 59 and extends a first preset length along the axial direction of the rotating shaft 31 to form the second side plate 52.

[0049] By using the above technical solution, the second side plate 52 is set to increase the relative area between the oil separator and the rotating shaft 31, which further reduces the possibility of oil being thrown out from the gap between the rotating shaft 31 and the oil separator.

[0050] In some feasible embodiments, combined with Figure 3 , 4 As shown, the baffle 5 includes:

[0051] First plate 53, the first plate 53 is parallel to the partition;

[0052] The second plate 54 is connected to the first plate 53, and the side of the second plate 54 facing away from the first plate 53 is inclined toward the rotor 32.

[0053] The third plate 55 is connected to the second plate 54 on the side opposite to the first plate 53. The third plate 55 is parallel to the partition 2. The first through hole 59 is provided on the third plate 55. The third plate 55 forms the edge of the first through hole 59 and extends along the axial direction of the rotating shaft 31 for a second preset length to form the third side plate 56.

[0054] It should be noted that the exhaust pipe 4 inside the housing 1 is located below the oil-gas separator, and the first plate 53 is located below the exhaust pipe 4. The first plate 53 and the third plate 55 are annular, and the second plate 54 is a hollow frustum. The upper and lower edges of the second plate 54 are connected to the third plate 55 and the first plate 53, respectively. The third side plate 56 is a hollow cylinder that covers the rotating shaft 31.

[0055] Through the above technical solution, the increased gap between the oil separator and the first bearing by the inclined second plate 54 further reduces the possibility of oil being thrown out from the gap between the rotating shaft 31 and the oil separator.

[0056] Understandably, the oil-gas separator separates oil and gas using the centrifuge principle. The gas inside the casing 1 forms a unidirectional airflow as the separator rotates. The separated oil, influenced by the airflow, flows obliquely down the inner wall of the casing 1. Some of the oil, flowing to the exhaust pipe 4, is further influenced by the airflow and converges along the outer side of the exhaust pipe 4 towards the gas collecting port 41, ultimately dripping onto the baffle 5 or being directly drawn back into the exhaust pipe 4. Therefore, in some feasible embodiments, combined with... Figure 3 , 4As shown, the outer edge of the baffle 5 extends a third predetermined length toward the side opposite to the partition 2 to form a fourth side plate 57. The fourth side plate 57 has a gap with the inner wall of the housing 1, and the fourth side plate 57 is provided with a second through hole 571 for the exhaust pipe 4 to pass through. The outer wall of the exhaust pipe 4 is sealed to the wall surface forming the second through hole 571.

[0057] With the above technical solution, when the separated oil flows through the exhaust pipe 4, it cannot flow along the exhaust pipe 4 due to the obstruction of the fourth side plate 57. Instead, it can only flow downward along the shell 1 or the fourth side plate 57 and then enter the oil separation chamber through the first oil return channel. This can prevent the oil from flowing into the gas collection port 41 along the exhaust pipe 4.

[0058] It should be noted that the upper edge of the fourth side plate 57 does not exceed the lower edge of the rotor 32, so as to prevent the separated oil from directly entering the space enclosed by the rotor 32 and the fourth side plate 57.

[0059] The distance between the fourth side plate 57 and the inner wall of the housing 1 is greater than 1 mm and less than 2 / 3 of the housing radius. If the distance is less than 1 mm, the separated oil cannot flow freely between the fourth side plate 57 and the inner wall of the housing 1. If the distance is greater than 20 mm, the gas collection port 41 of the exhaust pipe 4 will be too close to the rotating shaft 31. Due to the high rotation, the gas density inside the housing 1 increases from the rotating shaft 31 to the surrounding area. The proximity of the gas collection port 41 to the rotating shaft 31 is not conducive to the discharge of the separated waste gas.

[0060] It should be noted that, based on commonly used oil-gas separators, the distance between the fourth side plate 57 and the inner wall of the housing 1 can be set between 1mm and 20mm.

[0061] In some feasible embodiments, such as Figure 4 As shown, a plurality of positioning blocks 512 are spaced apart on the periphery of the first side plate 51. In the separator state, the positioning blocks 512 are located between the first side plate 51 and the inner wall of the housing 1.

[0062] Through the above technical solution, in the separator state, the positioning block 512 can fix the oil separator cover relative to the housing 1, thereby ensuring that the fourth side plate 57 and the inner wall of the housing 1 maintain a distance.

[0063] In some feasible embodiments, the baffle 5 is provided with a second oil return channel 58, which extends through the baffle 5 along the axial direction of the rotating shaft 31.

[0064] like Figure 4As shown, the second oil return channel 58 is disposed on the first plate 53. With this design, the oil that is fed into the space enclosed by the rotor 32 and the fourth side plate 57 by the airflow can flow into the oil separator chamber from the second oil return channel 58.

[0065] Specific embodiments have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this invention. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A splash-proof centrifugal oil-gas separator, characterized in that, include: The housing has a partition inside, which divides the housing into a first cavity and a second cavity. The partition is provided with a first bearing seat, and the first bearing seat is provided with a first bearing. The housing is provided with a first outlet. An oil-gas separation device, comprising a rotating shaft and a rotor sleeved on the rotating shaft, the rotating shaft passing through a first bearing, and the rotor located within a first cavity; An exhaust pipe is located below the oil-gas separator and is sealed to the first outlet. The portion of the exhaust pipe inside the housing is provided with a gas collection port. A baffle is provided with a first through hole. The baffle is sleeved on the rotating shaft through the first through hole and is located between the rotor and the partition. The outer edge of the baffle extends toward the partition to form a first side plate. A first return oil channel is formed between the first side plate and the partition to allow oil to pass through. The baffle forms the edge of the first through hole and extends along the axial direction of the rotating shaft by a first predetermined length to form a second side plate. The baffle has a second oil return channel that passes through the baffle along the axial direction of the rotating shaft. The baffle includes a first plate and a second plate. The first plate is located between the exhaust pipe and the partition. The second plate is connected to the first plate. At least a portion of the second plate is inclined toward the oil-gas separator. The first through hole is provided on the second plate. The outer edge of the baffle extends toward the side away from the partition by a third predetermined length to form a fourth side plate. The fourth side plate has a gap with the inner wall of the housing. The fourth side plate has a second through hole for the exhaust pipe to pass through.

2. The anti-splash centrifugal oil-gas separator as described in claim 1, characterized in that, The second plate forms the edge of the first through hole and extends a second predetermined length along the axial direction of the rotating shaft to form a third side plate.

3. The anti-splash centrifugal oil-gas separator as described in claim 1, characterized in that, The first side plate or the housing is provided with a positioning block, which is located between the inner wall of the first side plate and the housing.

4. The anti-splash centrifugal oil-gas separator as described in claim 1, characterized in that, The housing includes: A first housing, having an inlet and a first outlet, and a second bearing housing inside the first housing, with a second bearing housed therein; A second housing is sealed to the first housing, and the second housing is provided with a second outlet for liquid to flow out. The partition is disposed between the first housing and the second housing, and the rotating shaft passes through the first bearing and the second bearing.

5. The anti-splash centrifugal oil-gas separator as described in claim 1, characterized in that, The distance between the fourth side plate and the inner wall of the shell is greater than 1 mm and less than 2 / 3 of the radius of the shell.

6. The anti-splash centrifugal oil-gas separator as described in claim 1, characterized in that, The upper edge of the fourth side plate does not exceed the lower edge of the rotor.

Images