Vehicle-mounted oil and gas separation and recovery device

Abstract

The application provides a vehicle-mounted oil-gas separation and recovery device, and belongs to the technical field of oil-gas separation and recovery.The device comprises an oil tank, a separator assembly, an adjusting assembly, a driving assembly, a main separation cylinder assembly, a sponge plate, a lifting assembly, a compression block assembly, an exhaust pipeline and a PLC control system.The separator assembly is located at the rear end of the oil tank.The adjusting assembly is located at the top of the separator assembly and is connected with the separator assembly.The driving assembly is located at the bottom of the separator assembly and is connected with the separator assembly.The main separation cylinder assembly is located in the separator assembly and is fixedly connected with the separator assembly.The sponge plate is located in the main separation cylinder assembly and is connected with the main separation cylinder assembly.The lifting assembly is located at the top of the main separation cylinder assembly and is connected with the main separation cylinder assembly.The compression block assembly is located in the sponge plate.The exhaust pipeline is connected with the separator assembly.The device effectively improves the oil-gas separation efficiency through multiple separation processes such as primary separation, collision separation, sponge adsorption separation and wire mesh defoaming, and makes the oil-gas separation more thorough.

Description

Technical Field

[0001] This invention belongs to the field of oil and gas separation and recovery technology, and specifically relates to a vehicle-mounted oil and gas separation and recovery device. Background Technology

[0002] With the rapid growth in car ownership, the demand for gasoline consumption is constantly increasing, making efforts to reduce pollution from car use increasingly urgent. Due to the volatile nature of gasoline, the amount of gasoline vapors escaping from the fuel tank during use, especially during refueling, is increasing at an alarming rate every year. Test results show that approximately 1.5 grams of gasoline vapors evaporate for every liter of gasoline added to a car. As vehicle exhaust emissions become increasingly stringent, the amount of gasoline vapors evaporating during refueling has surpassed that of vehicle exhaust, becoming a major source of volatile organic compounds (VOCs).

[0003] In existing technologies, a small carbon canister is equipped in the vehicle's fuel system. This canister is used to adsorb the oil and gas emissions caused by heat loss and daytime losses, but not for adsorbing oil and gas during the refueling process. Therefore, the existing vehicle system cannot recover the oil and gas during refueling, resulting in resource waste and environmental pollution. Even if the oil and gas during refueling is introduced into the carbon canister in the existing vehicle fuel system through an external pipeline, although some oil and gas separation can be achieved, the small carbon canister cannot handle the large amount of oil and gas generated during refueling and the separation is incomplete. In addition, additional devices or methods are needed to solve the problem of activated carbon regeneration.

[0004] Patent document CN116571023B discloses a pre-oil-gas separation device, including an oil-gas separation mechanism, a lubricating oil tank, a first conduit disposed on the lubricating oil tank, and an oil-gas separation component disposed at the end of the first conduit; a collection mechanism, including an air box disposed in the middle of the first conduit, and a collection component disposed on the air box; and a filtration mechanism, including a receiving component disposed on the air box, a one-way valve disposed on the receiving component, and an oil pipe disposed between the one-way valve and the lubricating oil tank. The filter plate is composed of high-density stainless steel ultrafine foil strips, which can effectively separate part of the lubricating oil in the air. The inclined plate is designed to better limit the oil residue and can effectively guide foreign objects in the oil into the sludge discharge pipe for easy discharge of oil residue. The sludge guide groove can effectively discharge oil residue. The motor is designed to better drive the device. The second gear is rotatably connected to the filter box through a bearing. Although this patent can pre-treat oil and gas, its separation method is too complicated. The patent uses both gears and belts, which leads to inconvenience in maintenance and a large footprint, making it unsuitable for automotive systems. In addition, this patent cannot complete oil and gas recovery. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide an on-board oil-gas separation and recovery device, which effectively solves the problem that existing on-board systems cannot recover oil and gas during the refueling process, resulting in resource waste and environmental pollution. Even if the oil and gas during the refueling process are introduced into the carbon canister of the existing on-board vehicle fuel system through an external pipeline, although some oil-gas separation can be achieved, the small carbon canister cannot handle the large amount of oil and gas generated during refueling and the separation is incomplete. In addition, additional devices or methods are required to solve the problem of activated carbon regeneration.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an on-board oil-gas separation and recovery device, comprising an oil tank, a separator assembly, an adjustment assembly, a drive assembly, a main separator cylinder assembly, a sponge plate, a lifting assembly, a pressing block assembly, an exhaust pipe, and a PLC control system; the separator assembly is located at the rear end of the oil tank; the adjustment assembly is located at the top of the separator assembly and connected thereto; the drive assembly is located at the bottom of the separator assembly and connected thereto; the main separator cylinder assembly is located inside the separator assembly and fixedly connected thereto; the sponge plate is located inside the main separator cylinder assembly and connected thereto; the lifting assembly is located at the top of the main separator cylinder assembly and connected thereto; the pressing block assembly is located inside the sponge plate; and the exhaust pipe is connected to the separator assembly.

[0007] As a further improvement of the present invention, the oil tank includes an oil tank inlet, an oil and gas discharge pipe and an oil return pipe. The oil and gas discharge pipe is located at the top of the oil tank and communicates with it. The oil return pipe is located on one side of the oil tank and communicates with it. A one-way valve and a pressure sensor are provided on the oil and gas discharge pipe. The pressure sensor is located at the rear end of the one-way valve. A first solenoid valve is provided on the oil return pipe.

[0008] As a further improvement of the present invention, the separator assembly includes an outer cylinder, a separation top plate, a separation bottom plate, and an oil storage pipe. The separation top plate is located at the top of the outer cylinder and connected thereto. The separation bottom plate is located at the bottom of the outer cylinder and connected thereto. The oil storage pipe is located at the bottom of the separation bottom plate and connected thereto. The other end of the oil storage pipe is connected to the return oil pipe. A liquid level sensor is provided on the oil storage pipe. An oil and gas inlet and an exhaust outlet are provided on the outer cylinder. The oil and gas inlet is connected to the oil and gas discharge pipe. The exhaust outlet is connected to the exhaust pipe. A wire mesh demister is provided inside the exhaust outlet.

[0009] As a further improvement of the present invention, the top separating plate is provided with a first through hole and a vent, and the bottom separating plate is provided with a second through hole.

[0010] As a further improvement of the present invention, the drive assembly includes a variable frequency motor, a rotating shaft, rotating blades, a bearing housing assembly, and a rotating bracket. The variable frequency motor is connected to the rotating shaft via a coupling. The rotating blades and the bearing housing assembly are both fixedly connected to the rotating shaft. A rotating bracket is provided at the top of the rotating shaft, and a tapered opening is provided at the center of the top of the rotating bracket.

[0011] As a further improvement of the present invention, the main separating cylinder assembly includes a bottom connecting plate, a first cylinder, a second cylinder, an oblique sealing cap, and a sponge plate pressure plate. The bottom connecting plate is located between the two bearing seat assemblies. The bottom connecting plate is provided with a third through hole and a fourth through hole. The first cylinder is located on top of the bottom connecting plate and is fixedly connected to it. The third through hole is located inside the first cylinder, and the fourth through hole is located outside the first cylinder. The first cylinder is provided with a fifth through hole. The second cylinder is located on top of the first cylinder and is fixedly connected to it. The bottom folded edge of the second cylinder is provided with a sixth through hole. An oblique sealing cap is provided at the connection between the first cylinder and the second cylinder. The sponge plate pressure plate is provided inside the second cylinder. The lower surface of the sponge plate pressure plate, the inner wall of the second cylinder, and the inner surface of the bottom plate folded edge of the second cylinder form a sponge placement area. The sponge plate pressure plate is provided with a seventh through hole.

[0012] As a further improvement of the present invention, the lifting assembly includes a guide plate, a spring, a lifting shaft, a linkage plate, and a lifting block. The lifting shaft passes through the guide plate and the linkage plate. One end of the spring is connected to the guide plate, and the other end is connected to the top folded edge of the second cylinder. A tapered end is provided at one end of the lifting shaft near the lifting block. The linkage plate and the lifting block are detachably connected.

[0013] As a further improvement of the present invention, the pressing block assembly includes a limiting block and a moving block. The limiting block is fixedly connected to the rotating shaft. A guide groove is provided on the limiting block. The moving block is provided with a U-shaped groove. A sliding boss is provided at the bottom of the moving block. A sponge board abutment surface is provided on the side of the moving block away from the rotating shaft.

[0014] As a further improvement of the present invention, the exhaust pipe is provided with a second solenoid valve and a safety valve.

[0015] The present invention also provides a method of using an on-board oil-gas separation and recovery device, the method of use including the following methods: daily oil-gas separation and recovery method S1, rapid oil-gas separation and recovery method S2, and sponge plate periodically compressed method S3;

[0016] The routine oil and gas separation and recovery method S1 includes the following steps:

[0017] S11, oil and gas enter the interior of the separator assembly through the oil and gas discharge pipe, and the heavier oil falls into the oil storage pipe, realizing the initial separation of oil and gas.

[0018] S12, part of the oil-containing gas enters the second cylinder through the fourth and sixth through holes, and the other part first enters the second cylinder through the third through hole, then through the fifth through hole and the sixth through hole, and achieves a second oil-gas separation through collision;

[0019] S13, the oil-containing gas entering the second cylinder enters the sponge plate, and the oil is absorbed by the sponge plate, realizing the third oil-gas separation.

[0020] S14, the gas enters the exhaust port and undergoes the fourth oil-gas separation through the wire mesh demister;

[0021] The rapid oil and gas separation and recovery method S2 includes the following steps:

[0022] S21, as the oil and gas in the oil tank continue to enter the separator assembly, when the gas pressure in the separator assembly rises to the preset high value of the pressure sensor, the pressure sensor will feed back the signal to the PLC control system and start the variable frequency motor.

[0023] In step S22, the variable frequency motor drives the rotating shaft to rotate, and several rotating blades rotate to generate centrifugal force, making the initial oil-gas separation in step S11 more obvious. At the same time, the collision frequency in step S12 is more frequent, and the second oil-gas separation effect is enhanced.

[0024] S23, the rotation of the shaft causes the linkage plate, lifting block and pressing block assembly to rotate synchronously, and the oil in the inclined sealing cover falls into the bottom of the separator assembly through the sponge plate;

[0025] S24, after a preset time, the rotation of the variable frequency motor is stopped, the second solenoid valve is opened, and the pressurized gas in the separator assembly is discharged through the exhaust port. When the pressure of the pressurized gas in the separator assembly drops to the preset low value of the pressure sensor, the second solenoid valve is closed.

[0026] The method S3 for periodically compressing the sponge board includes the following steps:

[0027] S31, by adjusting the position of the component to move down, the guide plate, lifting shaft, linkage plate and lifting block are moved down as a whole, the spring is compressed, the conical end engages with the conical opening, the downward movement of the lifting block causes the moving block to move towards the sponge plate along the length of the guide groove, the sponge plate that is in contact with the sponge plate is compressed, and the oil is squeezed into the bottom of the separator component.

[0028] S32, start the variable frequency motor and make it run at low speed, the sponge board is continuously squeezed in the circumferential direction;

[0029] S33, after a preset time, stops the operation of the variable frequency motor, returns the adjustment components to their initial state, and the guide plate, lifting shaft, linkage plate and lifting block are all reset under the action of springs.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] (1) The present invention provides an on-board oil and gas separation and recovery device. Through the setting of an oil tank, a separator assembly, an adjustment assembly, a drive assembly, a main separation cylinder assembly, a sponge plate, a lifting assembly, a pressing block assembly, an exhaust pipe and a PLC control system, the efficient oil and gas separation and recovery device can reduce the emission of oil and gas in automobiles, especially during the refueling process. The recovered oil can be reused after separation and recovery, saving resources and reducing pollution to the environment.

[0032] (2) The vehicle-mounted oil-gas separation and recovery device provided by the present invention effectively improves the efficiency of oil-gas separation through multiple separation processes such as initial separation, collision separation, sponge adsorption separation and wire mesh defoaming, making the oil-gas separation more thorough and maximizing resource recovery. In addition, the entire device has a simple structure, is easy to operate, occupies little space, and meets the requirements of vehicle-mounted system installation.

[0033] (3) The present invention provides an on-board oil and gas separation and recovery device, which can automatically start and stop the drive component according to the change of oil and gas volume and the change of pressure inside the separator component, so as to achieve rapid oil and gas separation and recovery.

[0034] (4) The present invention provides an on-board oil-gas separation and recovery device. By coordinating the adjustment component, the lifting component and the pressing block component, the sponge plate is periodically compressed and squeezed, which can quickly send the oil adsorbed in the sponge plate into the oil storage pipe and restore the oil adsorption function of the sponge plate in time. Compared with the traditional filter replacement or carbon regeneration function, it saves costs. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall invention;

[0036] Figure 2 This is a schematic diagram of the separator assembly structure of the present invention;

[0037] Figure 3 This is a three-dimensional schematic diagram of the present invention after removing the oil tank, separator assembly and exhaust pipe;

[0038] Figure 4 This is a half-sectional structural schematic diagram of the main separation cylinder assembly of the present invention;

[0039] Figure 5 This is a schematic diagram of the inclined sealing cap and sponge plate pressure plate structure of the present invention;

[0040] Figure 6 This is a schematic diagram of the lifting assembly and clamping block assembly of the present invention;

[0041] Figure 7 This is a schematic diagram of the lifting component structure of the present invention;

[0042] Figure 8 This is a schematic diagram of the limiting block structure of the present invention;

[0043] Figure 9 This is a schematic diagram of the structure of the movable block of the present invention;

[0044] Figure 10 This is a schematic diagram of the sponge board of the present invention in its normal state;

[0045] Figure 11 This is a schematic diagram of the sponge board of the present invention in a compressed state.

[0046] In the diagram: 100, oil tank; 110, oil tank inlet; 120, oil and gas discharge pipe; 121, one-way valve; 122, pressure sensor; 130, return oil pipe; 131, first solenoid valve; 200, separator assembly; 210, outer cylinder; 211, oil and gas inlet; 212, exhaust port; 213, wire mesh demister; 220, top separator plate; 221, first through hole; 230, bottom separator plate; 231, second through hole; 240, oil storage pipe; 241, liquid level sensor; 300, adjusting assembly; 310, adjusting screw; 320, adjusting nut; 400, drive assembly; 410, variable frequency motor; 420, rotating shaft; 430, rotating blade; 440, bearing housing assembly; 450, rotating bracket; 451, conical inlet; 500. Main separating cylinder assembly; 510. Bottom connecting plate; 511. Third through hole; 512. Fourth through hole; 520. First cylinder; 521. Fifth through hole; 530. Second cylinder; 531. Sixth through hole; 540. Slanted sealing cap; 550. Sponge board pressure plate; 551. Seventh through hole; 600. Sponge board; 700. Lifting assembly; 710. Guide plate; 720. Spring; 730. Lifting shaft; 731. Conical end; 740. Linkage plate; 750. Lifting block; 800. Pressing block assembly; 810. Limiting block; 811. Guide groove; 820. Moving block; 821. U-shaped groove; 822. Sliding boss; 823. Sponge board contact surface; 900. Exhaust pipe; 901. Second solenoid valve; 902. Safety valve. Detailed Implementation

[0047] 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.

[0048] It should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "inner", and "outer" indicate orientation or positional relationships only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0049] It should be understood that, in the description of the invention, it should be noted that, unless otherwise explicitly specified and limited, the terms “installation,” “connection,” and “linking” should be interpreted broadly.

[0050] Example 1

[0051] See appendix Figures 1 to 11 The vehicle-mounted oil-gas separation and recovery device provided in this embodiment 1 includes an oil tank 100, a separator assembly 200, an adjustment assembly 300, a drive assembly 400, a main separation cylinder assembly 500, a sponge plate 600, a lifting assembly 700, a pressing block assembly 800, an exhaust pipe 900, and a PLC control system.

[0052] The oil tank 100 includes an oil tank inlet 110, an oil and gas discharge pipe 120, and an oil return pipe 130. The oil and gas discharge pipe 120 is located at the top of the oil tank 100 and is connected to it. The oil return pipe 130 is located on one side of the oil tank 100 and is connected to it. A one-way valve 121 and a pressure sensor 122 are installed on the oil and gas discharge pipe 120. The pressure sensor 122 is located at the rear end of the one-way valve 121. A first solenoid valve 131 is installed on the oil return pipe 130. When refueling, a large amount of oil and gas is generated, which will cause the oil and gas pressure in the oil tank 100 to rise. The oil and gas generated in the oil tank 100 can be quickly introduced into the separator assembly 200 through the one-way valve 121.

[0053] Furthermore, in order to ensure that the oil and gas in the fuel tank 100 do not leak out, an auxiliary refueling pipe can be installed at the fuel tank inlet 110, and a one-way valve can be installed on the auxiliary refueling pipe.

[0054] The separator assembly 200 is located at the rear end of the oil tank 100. The separator assembly 200 includes an outer cylinder 210, a top separator plate 220, a bottom separator plate 230, and an oil storage pipe 240. The outer cylinder 210 is a hollow structure and is fixed by supports (not shown in the figure). The top separator plate 220 is located at the top of the outer cylinder 210 and is fixedly connected to it. The bottom separator plate 230 is located at the bottom of the outer cylinder 210 and is fixedly connected to it. The oil storage pipe 240 is located at the bottom of the bottom separator plate 230 and communicates with it. The other end of the oil storage pipe 240 is connected to the return oil pipe. The oil storage pipe 240 is connected to the oil storage pipe 240, and a liquid level sensor 241 is installed on the oil storage pipe 240. The outer cylinder 210 is provided with an oil and gas inlet 211 and an exhaust port 212. The oil and gas inlet 211 is connected to the oil and gas discharge pipe 120, and the exhaust port 212 is connected to the exhaust pipe 900. A wire mesh demister 213 is installed inside the exhaust port 212. The separation top plate 220 is provided with a first through hole 221 and a vent. A vent valve (not shown in the figure) is connected to the vent and is used for maintenance of the entire device. The separation bottom plate 230 is provided with a second through hole 231.

[0055] When the oil level in the oil storage pipe 240 is higher than the high level set by the level sensor 241, the level sensor 241 sends a signal to the PLC control system to open the first solenoid valve 131. The oil in the oil storage pipe 240 enters the oil tank 100 through the return oil pipe 130. When the level drops to the low level set by the level sensor 241, the first solenoid valve 131 is closed. Since there is always oil in the oil storage pipe 240 (except in the initial state), the gas in the separator assembly 200 cannot enter the oil tank 100 through the return oil pipe 130.

[0056] The adjusting assembly 300 is located on top of and connected to the separator assembly 200, and extends into the interior of the separator assembly 200. The adjusting assembly 300 includes an adjusting screw 310 and an adjusting nut 320, and the adjusting screw 310 extends into the interior of the outer cylinder 210 through a first through hole.

[0057] The drive assembly 400 is located at the bottom of the separator assembly 200 and connected to it. The drive assembly 400 extends into the interior of the separator assembly 200. The drive assembly 400 includes a variable frequency motor 410, a rotating shaft 420, a rotating blade 430, a bearing housing assembly 440, and a rotating bracket 450. The variable frequency motor 410 is connected to the rotating shaft 420 via a coupling. The rotating blade 430 and the bearing housing assembly 440 are both fixedly connected to the rotating shaft 420. The rotating bracket 450 is provided on the top of the rotating shaft 420, and a tapered opening 451 is provided at the center of the top of the rotating bracket.

[0058] The main separating cylinder assembly 500 is located inside and fixedly connected to the separator assembly 200. The main separating cylinder assembly 500 includes a bottom connecting plate 510, a first cylinder 520, a second cylinder 530, an inclined sealing cap 540, and a sponge plate pressure plate 550. The bottom connecting plate 510 is located between two bearing seat assemblies 440, and has a third through hole 511 and a fourth through hole 512. The first cylinder 520 is located on top of the bottom connecting plate 510 and is fixedly connected to it. The third through hole 511 is located inside the first cylinder 520, and the fourth through hole 512 is located outside the first cylinder 520. The first cylinder 520 has a fifth through hole 512. 21. The second cylinder 530 is located on top of the first cylinder 520 and is fixedly connected to it. A sixth through hole 531 is provided on the bottom folded edge of the second cylinder 530. An oblique sealing cap 540 is provided at the connection between the first cylinder 520 and the second cylinder 530. A sponge board pressure plate 550 is provided inside the second cylinder 530. The lower surface of the sponge board pressure plate 550, the inner wall of the second cylinder 530, and the inner surface of the bottom plate folded edge of the second cylinder 530 form a sponge placement area for placing the sponge board 600. The sponge board 600 can be fixed in the sponge placement area by various existing technologies such as bonding. A seventh through hole 551 is provided on the sponge board pressure plate 550.

[0059] It should be noted that the bearing housing assembly 440 of the present invention includes a bearing housing and its matching bearing. With the arrangement of two bearing housing assemblies 440, the bottom connecting plate 510 and the outer cylinder 210 are fixed in relative position, that is, the main separating cylinder assembly 500 and the outer cylinder 210 are fixedly connected.

[0060] The lifting assembly 700 is located on top of and connected to the main separating cylinder assembly 500. The lifting assembly 700 includes a guide plate 710, a spring 720, a lifting shaft 730, a linkage plate 740, and a lifting block 750. The lifting shaft 730 passes through the guide plate 710 and the linkage plate 740. One end of the spring 720 is connected to the guide plate 710, and the other end is connected to the top folded edge of the second cylinder 530. A tapered end 731 is provided at the end of the lifting shaft 730 near the lifting block 750. The linkage plate 740 and the lifting block 750 are detachably connected.

[0061] The clamping block assembly 800 is located inside the sponge board 600. The clamping block assembly 800 includes a limiting block 810 and a moving block 820. The limiting block 810 is fixedly connected to the rotating shaft 420. The main body of the limiting block 810 has an inverted T-shaped structure and a guide groove 811 is provided on the limiting block 810. The main body of the moving block 820 has an L-shaped structure. A U-shaped groove 821 is provided on the upper surface of the moving block 820. A sliding boss 822 is provided on the bottom of the moving block 820. A sponge board abutment surface 823 is provided on the side of the moving block 820 away from the rotating shaft 420.

[0062] The exhaust pipe 900 is connected to the separator assembly 200. The exhaust pipe 900 is equipped with a second solenoid valve 901 and a safety valve 902. The safety valve 902 is located at the front end of the second solenoid valve 901.

[0063] The present invention also provides a method of using an on-board oil-gas separation and recovery device, the method of use including the following methods: daily oil-gas separation and recovery method S1, rapid oil-gas separation and recovery method S2, and sponge plate periodically compressed method S3;

[0064] The routine oil and gas separation and recovery method S1 includes the following steps:

[0065] S11, the oil and gas in the oil tank 100 enter the interior of the separator assembly 200 through the oil and gas discharge pipe 120, and its speed and direction change. The heavier oil falls into the oil storage pipe 240, realizing the initial separation of oil and gas.

[0066] S12, part of the oil-containing gas enters the second cylinder 530 through the fourth through hole 512 and the sixth through hole 531, and the other part first enters the second cylinder 530 through the third through hole 511, and then through the fifth through hole 521 and the sixth through hole 531, and achieves the second oil-gas separation through collision;

[0067] S13, the oil-containing gas entering the second cylinder 530 enters the sponge plate 600, and the oil is absorbed by the sponge plate 600, thus achieving the third oil-gas separation.

[0068] S14, the gas enters the exhaust port 212 and passes through the wire mesh demister 213 to achieve the fourth oil-gas separation;

[0069] The rapid oil and gas separation and recovery method S2 includes the following steps:

[0070] S21, as the oil and gas in the oil tank 100 continue to enter the separator assembly 200, when the gas pressure in the separator assembly 200 rises to the preset high value of the pressure sensor 122, the pressure sensor 122 will feed the signal back to the PLC control system and start the variable frequency motor 410.

[0071] In step S22, the variable frequency motor 410 drives the rotating shaft 420 to rotate, and several rotating blades 430 rotate to generate centrifugal force, making the initial oil-gas separation in step S11 more obvious. At the same time, the collision frequency in step S12 is more frequent, and the second oil-gas separation effect is enhanced.

[0072] S23, the rotation of the rotating shaft 420 causes the linkage plate 740, lifting block 750 and pressing block assembly to rotate synchronously, and the oil in the inclined sealing cover 540 falls into the bottom of the separator assembly 200 through the sponge plate 600.

[0073] S24, after a preset time, the rotation of the variable frequency motor 410 is stopped, the second solenoid valve 901 is opened through the PLC system, and the pressurized gas in the separator assembly 200 is discharged through the exhaust port 212. When the pressure of the pressurized gas in the separator assembly 200 drops to the preset low value of the pressure sensor 122, the second solenoid valve 901 is closed through the PLC system.

[0074] The method S3 for periodically compressing the sponge board includes the following steps:

[0075] S31, by adjusting the position of component 300 downward, guide plate 710, lifting shaft 730, linkage plate 740 and lifting block 750 are moved downward as a whole, spring 720 is compressed, tapered end 731 engages with tapered opening 451, the downward movement of lifting block 750 causes moving block 820 to move along the length direction of guide groove 811 towards sponge plate 600, sponge plate 600 in contact with sponge plate abutment surface 823 is compressed, oil is squeezed into the bottom of separator component 200;

[0076] S32, start the variable frequency motor 410 to make it run at low speed, and the sponge board 600 is continuously squeezed in the circumferential direction.

[0077] S33, after a preset time, the operation of the variable frequency motor 410 is stopped, the adjustment component 300 is returned to its initial state, and the guide plate 710, lifting shaft 730, linkage plate 740 and lifting block 750 are all reset under the action of spring 720.

[0078] It is easy to understand that during the second oil-gas separation process through collision, the oil-gas mixture can collide back and forth between the third through hole 511, the fourth through hole 512, the fifth through hole 521 and the sixth through hole 531.

[0079] Furthermore, during the periodic compression of the sponge board, the current system uses a low-speed variable frequency motor 410. The holes corresponding to the adjusting screw 310 and the lifting shaft 730 are clearance-fitted. When the sponge board is periodically compressed, the guide plate 710 and adjusting screw 310 do not rotate, while the lifting shaft 730 rotates. Therefore, the adjusting screw 310 needs to be replaced periodically. In larger vehicles with sufficient installation space, two electric push rods can be installed on the top of the separating top plate 220. The guide plate 710 can be replaced with a piston, and the extension shafts of the two electric push rods can be connected to the pistons. Lifting and lowering can then be achieved via the electric push rods, eliminating the need for the spring 720.

[0080] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vehicle-mounted oil-gas separation and recovery device, comprising an oil tank (100), characterized in that, It also includes a separator assembly (200), an adjusting assembly (300), a drive assembly (400), a main separator cylinder assembly (500), a sponge plate (600), a lifting assembly (700), a pressing block assembly (800), an exhaust pipe (900), and a PLC control system; the separator assembly (200) is located at the rear end of the oil tank (100); the adjusting assembly (300) is located at the top of the separator assembly (200) and connected to it; the drive assembly (400) is located at the top of the separator assembly (500). The main separator assembly (500) is located inside the separator assembly (200) and fixedly connected to it; the sponge plate (600) is located inside the main separator assembly (500) and connected to it; the lifting assembly (700) is located at the top of the main separator assembly (500) and connected to it; the pressing block assembly (800) is located inside the sponge plate (600); the exhaust pipe (900) is connected to the separator assembly (200); The oil tank (100) includes an oil tank inlet (110), an oil and gas discharge pipe (120), and an oil return pipe (130). The oil and gas discharge pipe (120) is located at the top of the oil tank (100) and communicates with it. The oil return pipe (130) is located on one side of the oil tank (100) and communicates with it. A one-way valve (121) and a pressure sensor (122) are provided on the oil and gas discharge pipe (120). The pressure sensor (122) is located at the rear end of the one-way valve (121). A first solenoid valve (131) is provided on the oil return pipe (130). The separator assembly (200) includes an outer cylinder (210), a top separator plate (220), a bottom separator plate (230), and an oil storage pipe (240). The top separator plate (220) is located at the top of and connected to the outer cylinder (210). The bottom separator plate (230) is located at the bottom of and connected to the outer cylinder (210). The oil storage pipe (240) is located at the bottom of and communicates with the bottom separator plate (230). The other end is connected to the return oil pipe (130). A liquid level sensor (241) is installed on the oil storage pipe (240). An oil and gas inlet (211) and an exhaust port (212) are installed on the outer cylinder (210). The oil and gas inlet (211) is connected to the oil and gas discharge pipe (120). The exhaust port (212) is connected to the exhaust pipe (900). A wire mesh demister (213) is installed inside the exhaust port (212). The drive assembly (400) includes a variable frequency motor (410), a rotating shaft (420), a rotating blade (430), a bearing housing assembly (440), and a rotating bracket (450). The variable frequency motor (410) is connected to the rotating shaft (420) via a coupling. The rotating blade (430) and the bearing housing assembly (440) are both fixedly connected to the rotating shaft (420). A rotating bracket (450) is provided on the top of the rotating shaft (420), and a tapered opening (451) is provided at the center of the top of the rotating bracket. The main separating cylinder assembly (500) includes a bottom connecting plate (510), a first cylinder (520), a second cylinder (530), an oblique sealing cap (540), and a sponge plate pressure plate (550). The bottom connecting plate (510) is located between the two bearing seat assemblies (440). The bottom connecting plate (510) is provided with a third through hole (511) and a fourth through hole (512). The first cylinder (520) is located on top of the bottom connecting plate (510) and is fixedly connected to it. The third through hole (511) is located inside the first cylinder (520), and the fourth through hole (512) is located outside the first cylinder (520). The first cylindrical body (530) is located at the top of the first cylindrical body (520) and is fixedly connected to it. The second cylindrical body (530) is provided with a sixth through hole (531) on the bottom folded edge. The first cylindrical body (520) and the second cylindrical body (530) are provided with a slanted sealing cap (540) at the connection between the first cylindrical body (520) and the second cylindrical body (530). The second cylindrical body (530) is provided with a sponge board pressure plate (550) inside. The lower surface of the sponge board pressure plate (550), the inner wall of the second cylindrical body (530) and the inner surface of the bottom plate folded edge of the second cylindrical body (530) form a sponge placement area. The sponge board pressure plate (550) is provided with a seventh through hole (551). The lifting assembly (700) includes a guide plate (710), a spring (720), a lifting shaft (730), a linkage plate (740), and a lifting block (750). The lifting shaft (730) passes through the guide plate (710) and the linkage plate (740). One end of the spring (720) is connected to the guide plate (710), and the other end is connected to the top flange of the second cylinder (530). A tapered end (731) is provided at one end of the lifting shaft (730) near the lifting block (750). The linkage plate (740) and the lifting block (750) are detachably connected. The exhaust pipe (900) is equipped with a second solenoid valve (901) and a safety valve (902); The liquid level sensor (241) sends a signal to the PLC control system; the pressure sensor (122) feeds the signal back to the PLC control system.

2. The vehicle-mounted oil-gas separation and recovery device according to claim 1, characterized in that, The top separating plate (220) is provided with a first through hole (221) and a vent, and the bottom separating plate (230) is provided with a second through hole (231).

3. The vehicle-mounted oil-gas separation and recovery device according to claim 2, characterized in that, The clamping block assembly (800) includes a limiting block (810) and a moving block (820). The limiting block (810) is fixedly connected to the rotating shaft (420). The limiting block (810) is provided with a guide groove (811). The moving block (820) is provided with a U-shaped groove (821). The bottom of the moving block (820) is provided with a sliding boss (822). The side of the moving block (820) away from the rotating shaft (420) is provided with a sponge board abutment surface (823).

4. The method of using the vehicle-mounted oil-gas separation and recovery device according to claim 3, characterized in that, The method of use includes the following methods: daily oil and gas separation and recovery method S1, rapid oil and gas separation and recovery method S2, and sponge plate periodically compressed method S3; The routine oil and gas separation and recovery method S1 includes the following steps: S11, oil and gas enter the interior of the separator assembly (200) through the oil and gas discharge pipe (120), and the heavier oil falls into the oil storage pipe (240), thus achieving the initial separation of oil and gas; S12, part of the oil-containing gas enters the second cylinder (530) through the fourth through hole (512) and the sixth through hole (531), and the other part first enters the second cylinder (530) through the third through hole (511), then through the fifth through hole (521) and the sixth through hole (531), and achieves a second oil-gas separation through collision; S13, the oil-containing gas entering the second cylinder (530) enters the sponge plate (600), and the oil is absorbed by the sponge plate (600), thus achieving the third oil-gas separation; S14, the gas enters the exhaust port (212) and achieves the fourth oil-gas separation through the wire mesh demister (213); The rapid oil and gas separation and recovery method S2 includes the following steps: S21, as the oil and gas in the oil tank (100) continue to enter the separator assembly (200), when the gas pressure in the separator assembly (200) rises to the preset high value of the pressure sensor (122), the pressure sensor (122) feeds the signal back to the PLC control system and starts the variable frequency motor (410). S22, the variable frequency motor (410) drives the rotating shaft (420) to rotate, and several rotating blades (430) rotate, generating centrifugal force, making the initial separation of oil and gas in step S11 more obvious, and at the same time, the collision frequency in step S12 is more frequent, and the second oil and gas separation effect is enhanced. S23, the rotation of the shaft (420) causes the linkage plate (740), lifting block (750) and pressing block assembly to rotate synchronously, and the oil in the inclined sealing cover (540) falls into the bottom of the separator assembly (200) through the sponge plate (600); S24, after a preset time, stop the rotation of the variable frequency motor (410), open the second solenoid valve (901), and discharge the pressurized gas in the separator assembly (200) through the exhaust port (212). When the pressure of the pressurized gas in the separator assembly (200) drops to the preset low value of the pressure sensor (122), close the second solenoid valve (901). The method S3 for periodically compressing the sponge board includes the following steps: S31, by adjusting the position of the component (300) downward, the guide plate (710), lifting shaft (730), linkage plate (740) and lifting block (750) are moved downward as a whole, the spring (720) is compressed, the conical end (731) engages with the conical opening (451), the downward movement of the lifting block (750) causes the moving block (820) to move along the length direction of the guide groove (811) towards the sponge plate (600), the sponge plate (600) in contact with the sponge plate contact surface (823) is compressed, and the oil is squeezed into the bottom of the separator component (200); S32, start the variable frequency motor (410) to make it run at low speed, and the sponge board (600) is continuously squeezed in the circumferential direction; S33, after a preset time, the operation of the variable frequency motor (410) is stopped, the adjustment component (300) is returned to the initial state, and the guide plate (710), lifting shaft (730), linkage plate (740) and lifting block (750) are all reset under the action of spring (720).

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