Roots type high-pressure supercharger with oil mist separation function

Abstract

The invention relates to a Roots type high-pressure supercharger with an oil mist separation function, which is characterized in that a first sealing cavity is formed on a driving side, a second sealing cavity is formed on a non-driving side, and a feeding pipe, the first sealing cavity and the second sealing cavity are communicated through an air pressure balance assembly; according to the device, the internal pressure difference is balanced, so that the sealing has very good reliability and long service life, and the device is suitable for being used under the high-pressure working condition, and is suitable for being used under the high-pressure working condition, and the pressure difference between the internal pressure of the oil tank and the exhaust pressure of the supercharger is not larger than the pressure difference between the inlet and the outlet of the supercharger. And the Roots type high-pressure supercharger can ensure better internal and external pressure difference without being completely sealed in the pressure container, and is convenient to overhaul and maintain.

Description

Technical Field

[0001] The invention relates to the technical field of supercharging equipment, and in particular to a Roots-type high-pressure supercharger with an oil mist separation function. Background Art

[0002] In hydrogen, natural gas or compressed air adsorption drying devices, considering the drying effect and zero gas consumption, the finished dry gas is generally used for adsorbent regeneration. The gas pressure after regeneration is reduced, and this part of the gas needs to be pressurized to return to the system, otherwise it will be a huge waste, so a small flow high-pressure boosting device is needed. Because the medium pressure is high, the gas sealing requirements are high, but the flow rate is not large, and the boost is not large (less than 1 bar). Roots-type high-pressure booster is very suitable for the needs of this working condition.

[0003] Due to the high cost of high-pressure Roots superchargers, some companies currently put ordinary Roots superchargers into a high-pressure pressure vessel as a whole, so that the Roots supercharger can obtain a working environment similar to that under normal atmospheric pressure, without the need for additional high-pressure resistant design. This solution has significant technical defects. The oil mist generated by the lubrication system of the supercharger forms a stable aerosol with the target gas in a high-pressure closed environment. The lack of an efficient gas-liquid separation mechanism leads to mixed contamination of the lubricating oil phase and the gas phase medium. In addition, the high-pressure environment can intensify the wall deposition of oil mist particles, causing carbonization and consolidation of oil stains, which not only reduces the regeneration efficiency of the adsorbent, but also causes abnormal wear of the equipment. In addition, this solution encapsulates the supercharger as a whole in a pressure vessel, and the system as a whole needs to be depressurized during fault inspection and repair, making it difficult to achieve rapid isolation and directional maintenance of key components. Summary of the invention

[0004] Based on the above description, the present invention provides a Roots-type high-pressure supercharger with an oil mist separation function to solve the technical problem in the prior art that the supercharger is placed inside a pressure vessel, causing inconvenience in maintenance.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: A Roots-type high-pressure supercharger with an oil mist separation function, comprising a pump body, a magnetic coupling, a rotor assembly, a synchronous transmission assembly, an oil tank and an air pressure balance assembly; A boosting chamber is formed inside the pump body, and a feed pipe and a discharge pipe are respectively arranged at both ends of the boosting chamber, and the pump body has a driving side and a non-driving side opposite to each other; The rotor assembly comprises a driving rotor and a driven rotor, both of which are rotatably arranged on the pump body, the front end of the driving rotor extends from the driving side and the rear end extends from the non-driving side; the rear end of the driven rotor extends from the non-driving side; The magnetic coupling is installed at the front end of the driving rotor, and the synchronous transmission assembly is installed at the rear end of the rotor assembly, for synchronous rotation of the driving rotor and the driven rotor; Among them, the magnetic coupling and the pump body form a first sealed cavity, and the front end of the driving rotor is built into the first sealed cavity; the oil tank is arranged on the non-driving side of the pump body, and the oil tank and the pump body form a second sealed cavity, and the synchronous transmission assembly is built into the second sealed cavity, and the air pressure balance assembly connects the feed pipe, the first sealed cavity and the second sealed cavity.

[0006] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: The Roots-type high-pressure supercharger provided by the present invention forms a first sealed cavity with a pump body through a magnetic coupling, and a second sealed cavity including a synchronous transmission component is arranged on the non-driving side. Combined with the oil mist filter connection design of the air pressure balance component, the following technical effects are achieved: 1) Through the double-seal cavity isolation and directional filtration of the air pressure balance component, the lubricating oil mist and the conveying medium are effectively separated to avoid adsorbent contamination; 2) The independent cavity structure of the magnetic coupling and synchronous transmission assembly supports zoned pressure relief maintenance to ensure continuous operation of the system; 3) The air pressure balance component dynamically adjusts the pressure of the sealing chamber, reduces the high-pressure sealing load, and extends the life of the equipment.

[0007] Under high-pressure conditions, the device takes into account both the medium purification needs and the economic efficiency of operation and maintenance.

[0008] Based on the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the synchronous transmission assembly includes a driving gear and a driven gear, the driving gear is installed at the rear end of the driving rotor; the driven gear is installed at the rear end of the driven rotor, the driving gear and the driven gear are meshed and transmitted with a transmission ratio of 1.

[0010] Furthermore, the pump body includes a driving side wall plate, a pump casing and a non-driving side wall plate. Both sides of the pump casing are open. The driving side wall plate and the non-driving side wall plate are respectively sealed and installed on both sides of the pump casing to form a booster chamber.

[0011] Furthermore, the magnetic coupling includes an active terminal, a sealing cover and a passive terminal, the passive terminal is connected to the front end of the driving rotor, the sealing cover is installed on the outside of the passive terminal and forms a seal with the driving side wall panel, the active terminal is rotatably arranged on the outside of the sealing cover, and the active terminal and the passive terminal are transmitted by magnetic force.

[0012] Furthermore, a coupling shield is arranged on the outer side of the magnetic coupling, and the coupling shield is arranged on the driving side wall plate.

[0013] Furthermore, the air pressure balancing assembly includes a pressure balancing tube, a front end of which is connected to the first sealed cavity and the air intake pipe via a first pipeline, a rear end of which is connected to the second sealed cavity via a second pipeline, and a pressure gauge is provided on the first pipeline; an oil mist filtering structure is provided inside the pressure balancing tube.

[0014] Furthermore, two driving side bearing holes are formed on the driving side wall plate, and the front ends of the driving rotor and the driven rotor are arranged in correspondence with the bearings in the two driving side bearing holes, and the driving side bearing holes are isolated from the boost chamber.

[0015] Furthermore, two non-driving side bearing holes are formed on the non-driving side wall plate, and the rear ends of the driving rotor and the driven rotor are correspondingly connected to the bearings arranged in the two non-driving side bearing holes, and the non-driving side bearing holes are isolated from the boost chamber.

[0016] Furthermore, the driving side bearing hole and the non-driving side bearing hole are sealed to the corresponding rotors through piston ring seals and oil seals.

[0017] Furthermore, the piston ring seal includes a piston ring and a ring support frame, the ring support frame is fixed on the corresponding rotor shaft and rotates with the shaft, and the piston ring is floatingly sleeved on the corresponding rotor shaft.

[0018] Furthermore, the oil seal is arranged between the piston ring seal and the bearing.

[0019] Furthermore, an oil collecting hole is formed at the lower end of the non-driving side wall plate, and the oil collecting hole is arranged corresponding to the two non-driving side bearing holes and is located between the piston ring seal and the oil seal. The Roots-type high-pressure supercharger also includes a sealing inspection component, and the sealing inspection component includes a conduit and an oil sight glass, and the conduit connects the oil collecting hole and the oil sight glass.

[0020] Furthermore, a heat dissipation component for dissipating heat from the oil tank is provided on a side of the oil tank away from the pump body.

[0021] Furthermore, the heat dissipation assembly includes a fan and an outer cover, the outer cover is installed on the outer side of the oil tank, and the fan is arranged on the outer cover.

[0022] Furthermore, the outer side wall of the oil tank is formed with heat dissipation fins. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1A schematic diagram of the three-dimensional structure of a Roots-type high-pressure supercharger provided in an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure from another perspective; Figure 3 A rear view of a Roots-type high-pressure supercharger provided in an embodiment of the present invention; Figure 4 for Figure 3 Schematic diagram of the cross section in the middle DD direction; Figure 5 for Figure 3 Schematic diagram of the cross section in the EE direction; Figure 6 for Figure 3 Schematic diagram of the cross section in the FF direction; Figure 7 It is a schematic diagram of the three-dimensional structure of the oil tank in the embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0026] It will be appreciated that spatial relationship terms such as "under", "beneath", "below", "under", "above", "above", etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as "on" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90° or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0027] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0028] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0029] like Figure 1-Figure 6 As shown, the present application provides a Roots-type high-pressure supercharger with an oil mist separation function, which includes a pump body 10, a magnetic coupling 20, a rotor assembly 30, a synchronous transmission assembly 40, an oil tank 50 and an air pressure balance assembly 60.

[0030] A pressurizing chamber 10 a is formed inside the pump body 10 , and a feed pipe 110 and a discharge pipe 120 are respectively disposed at two ends of the pressurizing chamber 10 a . The pump body 10 has a driving side 101 and a non-driving side 102 that are opposite to each other.

[0031] The rotor assembly 30 includes a driving rotor 31 and a driven rotor 32. Both the driving rotor 31 and the driven rotor 32 are rotatably arranged on the pump body 10. The front end of the driving rotor 31 extends from the driving side 101 and the rear end extends from the non-driving side 102; the rear end of the driven rotor 32 extends from the non-driving side 102.

[0032] The magnetic coupling 20 is installed at the front end of the driving rotor 31 , and the synchronous transmission assembly 40 is installed at the rear end of the rotor assembly 30 , so as to drive the rotor 31 and the driven rotor 32 to rotate synchronously.

[0033] Among them, the magnetic coupling 20 and the pump body 10 form a first sealed cavity A, and the front end of the driving rotor 31 is built into the first sealed cavity A; the oil tank 50 is arranged on the non-driving side 102 of the pump body 10, the oil tank 50 and the pump body 10 form a second sealed cavity B, the synchronous transmission assembly 40 is built into the second sealed cavity B, and the air pressure balance assembly 60 connects the feed pipe 110, the first sealed cavity A and the second sealed cavity B.

[0034] The Roots-type high-pressure supercharger provided in the present application forms a first sealed cavity A on the driving side 101 and a second sealed cavity B on the non-driving side 102. The feed pipe 110, the first sealed cavity A and the second sealed cavity B are connected through the air pressure balance component 60, so that the pressure increase generated by the temperature rise of the oil tank 50 is released to the inlet of the supercharger through the air pressure balance component 60, so that the difference between the internal pressure of the oil tank 50 and the exhaust pressure of the supercharger is not greater than the inlet and outlet pressure difference of the supercharger. After balancing the internal pressure difference, the device has very good reliability and life of the seal, and is suitable for use under high-pressure conditions. Moreover, the Roots-type high-pressure supercharger does not need to be completely enclosed in the pressure vessel to ensure a good internal and external pressure difference, which is convenient for inspection and maintenance.

[0035] In an embodiment of the present application, the synchronous transmission assembly 40 includes a driving gear 41 and a driven gear 42. The driving gear 41 is installed at the rear end of the driving rotor 31; the driven gear 42 is installed at the rear end of the driven rotor 32. The driving gear 41 and the driven gear 42 are meshed for transmission and the transmission ratio is 1.

[0036] Specifically, the pump body 10 includes a driving side wall plate 11, a pump casing 12 and a non-driving side wall plate 13. The two sides of the pump casing 12 are open. The driving side wall plate 11 and the non-driving side 13 wall plates are respectively sealed and installed on both sides of the pump casing 12 to form a boost chamber 10a, wherein the driving side wall plate 11 and the non-driving side 13 wall plates are tightened and fixed with tensioning bolts.

[0037] It is understandable that the driving rotor 31 and the driven rotor 32 are formed with Roots impeller structures at positions corresponding to the pump housing 12 , and the extrusion and pressurization inside the boosting chamber 10 a are achieved through the rotation of the Roots impeller structures of the driving rotor 31 and the driven rotor 32 .

[0038] In a preferred embodiment of the present application, the magnetic coupling 20 includes an active terminal 21, a sealing cover 22 and a passive terminal 23. The passive terminal 23 is connected to the front end of the driving rotor 31. The sealing cover of the sealing cover 22 is installed on the outer side of the passive terminal 23 and forms a seal with the driving side wall panel 11. The active terminal 21 is rotatably arranged on the outer side of the sealing cover 22, and the active terminal 21 and the passive terminal 23 are transmitted by magnetic force.

[0039] A seal is formed between the sealing cover 22 and the driving side wall plate 11, and the rotation of the passive terminal 23 is driven by the magnetic force of the active terminal 21, so that the external driving mechanism and the working part of the supercharger are completely separated, ensuring that the working part of the supercharger is not affected by changes in the external environmental air pressure.

[0040] Preferably, a coupling shield 14 is provided on the outer side of the magnetic coupling 20 , and the coupling shield 14 is provided on the driving side wall plate 11 .

[0041] In an embodiment of the present application, the air pressure balance assembly 60 includes a pressure balance tube 61, the front end of the pressure balance tube 61 is connected to the first sealed cavity A and the intake pipe 110 through a first pipeline 62, the rear end of the pressure balance tube 61 is connected to the second sealed cavity B through a second pipeline 63, and a pressure gauge 64 is provided on the first pipeline 62.

[0042] When the supercharger is working, the driving gear 41 and the driven gear 42 inside the oil tank 50 rotate at high speed to generate high temperature, causing the air pressure inside the second sealed chamber B to rise sharply, the gas to expand, and the air flow enters the first sealed chamber A through the pressure balance pipe 61, so that the pressure at the front and rear ends of the pump body 10 is balanced, and the pressure balance pipe 61 is connected to the intake pipe 110, so that the pressure increase caused by the temperature rise of the oil tank 50 is released to the supercharger inlet through the pressure balance pipe 61, ensuring that the difference between the internal pressure of the oil tank 50 and the exhaust pressure of the supercharger is not greater than the inlet and outlet pressure difference of the supercharger, effectively balancing the pressure at various locations inside the pump body 10, thereby forming a closed shell resistant to high pressure. The setting of the barometer 64 can monitor the internal pressure of the supercharger in real time, and can immediately detect and deal with the abnormal increase in air pressure caused by pipeline blockage or the abnormal decrease in air pressure caused by pipeline leakage.

[0043] In a preferred embodiment of the present application, an oil mist filtering structure is provided inside the pressure balance pipe 61, which can effectively filter and absorb the oil mist or other impurities in the airflow to ensure smooth flow of the airflow pipeline.

[0044] As the preferred installation method for the driving rotor 31 and the driven rotor 32 in the present application, two driving side bearing holes 11a are formed on the driving side wall plate 11, and the front ends of the driving rotor 31 and the driven rotor 32 are respectively connected to the bearings Z in the two driving side bearing holes 11a, and the driving side bearing holes 11a are isolated from the boost chamber 10a.

[0045] Two non-driving side bearing holes 13a are formed on the non-driving side wall plate 13, and the rear ends of the driving rotor 31 and the driven rotor 32 are correspondingly connected to the bearings Z arranged in the two non-driving side bearing holes 13a, and the non-driving side bearing holes 13a are isolated from the boost chamber 10a.

[0046] According to the above structural description, the first sealed chamber A is composed of the space between the sealing cover 22 and the coupling guard 14 and the internal space of the two driving side bearing holes 11a, and the second sealed chamber B is composed of the internal space of the oil tank 50 and the internal space of the two non-driving side bearing holes 13a.

[0047] In the present application, the driving side bearing hole 11a and the supercharging chamber 10a are isolated, and the non-driving side bearing hole 13a and the supercharging chamber 10a are isolated in the following manner: The driving side bearing hole 11 a and the non-driving side bearing hole 13 a are sealed to the corresponding rotors by a piston ring seal 15 and an oil seal 16 .

[0048] Preferably, the piston ring seal 15 includes a piston ring and a ring support frame. The ring support frame is fixed on the shaft of the corresponding rotor and rotates with the shaft. The piston ring is made of a material with self-lubricating properties and is floatingly mounted on the corresponding rotor shaft. More preferably, multiple piston rings are used in combination, which has good sealing effect and long service life.

[0049] Among them, the oil seal 16 is arranged between the piston ring seal 15 and the bearing Z. When the internal pressure of the supercharger is suddenly unbalanced and there is a maximum sealing pressure difference, it can well seal the lubricating oil and balance the internal pressure of the oil tank 50 by releasing the air pressure through the pressure balance pipe 61.

[0050] In order to cope with various sudden internal seal failures caused by tooling, the Roots-type high-pressure supercharger of the present application is also provided with a seal inspection assembly 70, and its installation and connection method is as follows: an oil collecting hole 13b is formed at the lower end of the non-driving side wall plate 13, and the oil collecting hole 13b is arranged corresponding to the two non-driving side bearing holes 13a, and is located between the piston ring seal 15 and the oil seal 16. The seal inspection assembly 70 includes a conduit 71 and an oil sight glass 72, and the conduit 71 connects the oil collecting hole 13b and the oil sight glass 72.

[0051] The oil sight glass 72 can be used to observe the oil level changes of the lubricating oil, determine the leakage of the lubricating oil, and ensure the safe and reliable operation of the equipment. Preferably, an oil level detection instrument can also be installed at the same time for automatic detection and control.

[0052] In the embodiments of the present application, Figure 7 As shown, in order to enhance the heat dissipation of the oil tank 50 , the oil tank 50 is made of aluminum alloy with better heat dissipation performance, and heat dissipation fins 51 are formed on the side wall of the oil tank 50 .

[0053] More preferably, a heat dissipation assembly 80 for dissipating heat from the oil tank 50 is provided on one side of the oil tank 50 away from the pump body 10. It is understandable that the heat dissipation of the oil tank 50 can be achieved by air cooling or water cooling. In this embodiment, air cooling is used as an example. The heat dissipation assembly 80 includes a fan 81 and an outer cover 82. The outer cover 82 is covered on the outer side of the oil tank 50, and the fan 81 is provided on the outer cover 82.

[0054] When the Roots-type high-pressure supercharger provided by the present application is in use, the working medium (high-pressure gas) enters the supercharging chamber 10a through the air inlet pipe 110. The torque is input to the front end of the driving rotor 31 through the magnetic coupling 20. Under the action of the synchronous transmission system 40, the Roots impellers on the driving rotor 31 and the driven rotor 32 rotate to do work, so that the working medium (high-pressure gas) is pressurized and discharged from the air outlet pipe 120.

[0055] It should be noted that the Roots-type high-pressure booster provided in this application adopts a high-pressure resistant design in terms of connection and sealing requirements, and must pass a high-pressure air-tightness test before leaving the factory.

[0056] The invention fundamentally avoids the shaft seal leakage problem of the high-pressure supercharger and solves the problem of oil mist contamination of the medium in the prior art. It has high reliability, compact structure and convenient maintenance.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A Roots-type high-pressure supercharger with oil mist separation function, characterized in that: It includes a pump body, a magnetic coupling, a rotor assembly, a synchronous transmission assembly, an oil tank and an air pressure balance assembly; A boosting chamber is formed inside the pump body, and a feed pipe and a discharge pipe are respectively arranged at both ends of the boosting chamber, and the pump body has a driving side and a non-driving side opposite to each other; The rotor assembly comprises a driving rotor and a driven rotor, both of which are rotatably arranged on the pump body, the front end of the driving rotor extends from the driving side and the rear end extends from the non-driving side; the rear end of the driven rotor extends from the non-driving side; The magnetic coupling is installed at the front end of the driving rotor, and the synchronous transmission assembly is installed at the rear end of the rotor assembly, for synchronous rotation of the driving rotor and the driven rotor; Among them, the magnetic coupling and the pump body form a first sealed cavity, and the front end of the driving rotor is built into the first sealed cavity; the oil tank is arranged on the non-driving side of the pump body, and the oil tank and the pump body form a second sealed cavity, and the synchronous transmission assembly is built into the second sealed cavity, and the air pressure balance assembly connects the feed pipe, the first sealed cavity and the second sealed cavity and performs oil mist separation.

2. The Roots-type high-pressure supercharger with oil mist separation function according to claim 1, characterized in that: The synchronous transmission assembly includes a driving gear and a driven gear, wherein the driving gear is mounted at the rear end of the driving rotor; the driven gear is mounted at the rear end of the driven rotor, and the driving gear and the driven gear are meshed and transmitted with a transmission ratio of 1.

3. The Roots-type high-pressure supercharger with oil mist separation function according to claim 2, characterized in that: The pump body comprises a driving side wall plate, a pump casing and a non-driving side wall plate. Both sides of the pump casing are open. The driving side wall plate and the non-driving side wall plate are respectively sealed and installed on both sides of the pump casing to form a boosting chamber.

4. The Roots-type high-pressure supercharger with oil mist separation function according to claim 3, characterized in that: The magnetic coupling includes an active terminal, a sealing cover and a passive terminal. The passive terminal is connected to the front end of the driving rotor. The sealing cover of the sealing cover is installed on the outer side of the passive terminal and forms a seal with the driving side wall plate. The active terminal is rotatably arranged on the outer side of the sealing cover. The active terminal and the passive terminal are transmitted by magnetic force.

5. The Roots-type high-pressure supercharger with oil mist separation function according to claim 3, characterized in that: A coupling shield is arranged on the outer side of the magnetic coupling, and the coupling shield is arranged on the driving side wall plate.

6. The Roots-type high-pressure supercharger with oil mist separation function according to claim 3, characterized in that: The air pressure balancing assembly includes a pressure balancing tube, the front end of which is connected to the first sealed cavity and the air intake pipe via a first pipeline, the rear end of which is connected to the second sealed cavity via a second pipeline, and an air pressure gauge is provided on the first pipeline; an oil mist filtering structure is provided inside the pressure balancing tube.

7. The Roots-type high-pressure supercharger with oil mist separation function according to claim 3, characterized in that: Two driving side bearing holes are formed on the driving side wall plate, and the front ends of the driving rotor and the driven rotor are arranged in correspondence with the bearings in the two driving side bearing holes, and the driving side bearing holes are isolated from the boost chamber.

8. The Roots-type high-pressure supercharger with oil mist separation function according to claim 3, characterized in that: Two non-driving side bearing holes are formed on the non-driving side wall plate, and the rear ends of the driving rotor and the driven rotor are correspondingly connected to the bearings arranged in the two non-driving side bearing holes, and the non-driving side bearing holes are isolated from the boost chamber.

9. The Roots-type high-pressure supercharger with oil mist separation function according to claim 3, characterized in that: The driving side bearing hole and the non-driving side bearing hole are sealed to the corresponding rotors through piston ring seals and oil seals.

10. The Roots-type high-pressure supercharger with oil mist separation function according to claim 9, characterized in that: The piston ring seal comprises a piston ring and a ring support frame, wherein the ring support frame is fixed on the shaft of the corresponding rotor and rotates with the shaft, and the piston ring is floatingly sleeved on the corresponding rotor shaft.

11. The Roots-type high-pressure supercharger with oil mist separation function according to claim 10, characterized in that: The oil seal is arranged between the piston ring seal and the bearing.

12. The Roots-type high-pressure supercharger with oil mist separation function according to claim 11, characterized in that: An oil collecting hole is formed at the lower end of the non-driving side wall plate, and the oil collecting hole is arranged corresponding to the two non-driving side bearing holes and is located between the piston ring seal and the oil seal. The Roots-type high-pressure supercharger also includes a sealing inspection component, and the sealing inspection component includes a conduit and an oil sight glass. The conduit connects the oil collecting hole and the oil sight glass.

13. The Roots-type high-pressure supercharger with oil mist separation function according to claim 12, characterized in that: A heat dissipation component for dissipating heat from the oil tank is arranged on one side of the oil tank away from the pump body. The heat dissipation component comprises a fan and an outer cover. The outer cover is mounted on the outer side of the oil tank, and the fan is arranged on the outer cover.

14. The Roots-type high-pressure supercharger with oil mist separation function according to claim 13, characterized in that: The outer side wall of the oil tank is formed with heat dissipation fins.

Images