CN115837188B

CN115837188B - Impurity filtering device for lubricating oil production and application method thereof

Info

Publication number: CN115837188B
Application number: CN202310135262.8A
Authority: CN
Inventors: 孙雅萍; 张男; 倪百利
Original assignee: Shandong Wanqi Energy Technology Co ltd
Current assignee: Shandong Wanqi Energy Technology Co ltd
Priority date: 2023-02-20
Filing date: 2023-02-20
Publication date: 2023-04-21
Anticipated expiration: 2043-02-20
Also published as: CN115837188A

Abstract

A device for filtering impurities in lubricating oil production and a use method thereof comprise a shell, a screen, an oil inlet pipe, a screen rotary driving assembly, an impurity dumping assembly, a rotary spray head assembly, an angle adjusting assembly, an outer liquid level sensor, an inner liquid level sensor, a control circuit and a lubricating oil circuit. Under the higher condition of screen cloth inside oil level, impurity dumping subassembly becomes the level from the slope, and rotatory nozzle assembly becomes vertical from the slope, can improve the dwell time of impurity and the mixture of lubricating oil on dumping the board to make the abundant follow dumping the board of lubricating oil composition in the mixture filter out through vertical jetting, reduce the lubricating oil content in the impurity.

Description

Impurity filtering device for lubricating oil production and application method thereof

Technical Field

The invention relates to lubricating oil production equipment, in particular to a lubricating oil impurity filtering device and a using method thereof.

Background

In the prior art, in the lubricating oil production process, impurities in the lubricating oil production process can be filtered by adopting a rotary drum screen, the lubricating oil is introduced into the screen, then the impurities are reserved in the screen and are led out, and then the filtered lubricating oil is led out from the outside of the screen. However, in actual production, because of the high viscosity of the lubricating oil, a large amount of lubricating oil remains in the impurities led out from the inside of the screen, and if the impurities are not further treated, the impurities are discarded, which leads to waste of the lubricating oil production; if the impurities are further separated, the process flow is complicated and the production cost is increased.

Therefore, it is necessary to design a filter device to separate the lubricating oil from the impurities well in the filtering step, thereby reducing the content of the lubricating oil in the impurities.

Disclosure of Invention

The invention aims to provide a lubricating oil production impurity filtering device and a using method thereof, which are used for solving the technical problems in the prior art.

The invention adopts the following technical scheme to realize the aim:

in one aspect, a lubricant production impurity filtering device is provided, comprising a shell, a screen, an impurity dumping assembly, a rotary spray head assembly and an angle adjusting assembly; the shell is provided with a front end plate and a rear end plate, the screen is rotatably arranged in the shell through a bearing, a cylindrical oil inlet space is formed by the screen and the rear end plate, and an oil outlet space is formed between the screen and the inner wall of the shell;

the impurity dumping assembly is arranged at the top of the oil inlet space and comprises a dumping plate, and the dumping plate is hinged to the rear end plate; a rotary spray head assembly is arranged on the shell and is positioned right above the impurity dumping assembly, and the rotary spray head assembly comprises a plurality of spray heads rotatably arranged on the shell; an angle adjusting assembly is arranged on the outer side of the rear end plate and comprises a winch drum, and a dumping plate control steel rope and a spray head control steel rope are respectively wound on the winch drum towards opposite directions; the end part of the pouring plate control steel cable is fixed at the end part of the pouring plate, and the end part of the spray head control steel cable is fixed with a rotary spray head assembly;

the angle adjusting component controls the impurity dumping component and the rotary nozzle component to be in two states, namely a retention state and a dumping state; in the retaining state, the winch drum controls the steel rope to control the dumping plate to be in a horizontal position through the dumping plate, the winch drum controls the steel rope to be in a vertical position through the spray head, and the spray head is perpendicular to the dumping plate; in the transition process from the detained state to the dumping state, the winch roller rotates clockwise, the dumping plate controls the steel cable to pull the dumping plate to rotate clockwise to be in a dumping posture, and meanwhile, the spray head controls the length of the steel cable to be released, so that the spray head rotates anticlockwise.

Preferably, the impurity dumping assembly further comprises a dumping base, a connecting base, a steel rope bolt, a first guide roller, a flexible connecting sleeve and a dumping through hole, wherein the dumping base is fixedly arranged on a rear end plate in the oil inlet space, the dumping plate is of a strip plate-shaped structure and extends along the length direction of the screen, the bottom of the dumping plate, which is close to the rear end plate, is provided with the connecting base, and the connecting base is hinged with the dumping base; a steel cable bolt and a first guide roller are sequentially arranged on the top surface of one end of the dumping plate, which is far away from the rear end plate; the rear end plate is provided with a dumping through hole relative to the dumping plate, a flexible connecting sleeve is arranged between the dumping through hole and the dumping plate, and the dumping plate body is of a screen mesh structure; the dumping plate controls the steel rope to wind on the winding drum anticlockwise, the end part of the steel rope extends out of the winding drum and then passes through the dumping through hole, then the steel rope extends along the dumping plate, and the steel rope is fixed on the steel rope bolt after bypassing the guide roller I.

Preferably, the rotary sprayer assembly includes a row of sprayer mounting holes arrayed along the length of the housing; the spray head mounting hole is in a horn mouth shape which faces the inner opening of the shell and penetrates through the inner part and the outer part of the shell; a spray head is rotatably arranged in each spray head mounting hole; the nozzles of the spray heads are opposite to the screen mesh at the bottom, the tail part of each spray head extends out of the shell, a control rod is hinged with the tail part of each spray head, and the spray heads can be synchronously rotated through the left-right translation of the control rod; one end of the control rod, which is far away from the rear end plate, is connected with an extension spring, and the other end of the extension spring is fastened and fixed with a spring bolt on the shell; a second guide roller is arranged on the shell relative to the tail part of the rotary spray head assembly; the spray head control steel cable is wound on the winding drum clockwise, and the end part of the spray head control steel cable extends upwards after extending out of the winding drum, and then bypasses the second guide roller and is fixed at the end part of the control rod, which faces the rear end plate.

Preferably, an outer liquid level sensor is provided on the front end plate in the oil outlet space, and an inner liquid level sensor is provided on the rear end plate in the oil inlet space.

Preferably, the device also comprises a lubricating oil path and an oil inlet pipe, wherein the lubricating oil path comprises an oil inlet pipe, an oil outlet pipe and a slag outlet pipe; the oil inlet pipeline is connected to the oil inlet pipe, and an oil inlet switching valve for controlling the opening and closing of oil inlet is arranged on the oil inlet pipeline; the oil outlet pipeline is connected to an oil outlet hole on the shell, and an oil pump for pumping oil is arranged on the oil outlet pipeline; the slag discharging pipeline is connected to the dumping through hole, impurities accumulated on the dumping plate are discharged from the slag discharging pipeline after passing through the dumping through hole, and a slag pump is arranged on the slag discharging pipeline.

Preferably, the screen comprises a screen end plate, a roller screen and a rotating ring; the roller screen is provided with a screen hole capable of filtering lubricating oil impurities; one end of the roller screen is fixedly provided with a screen end plate, and the other end of the roller screen is provided with a rotating ring; the center of the screen end plate is provided with a center through hole, one end of an oil inlet pipe is fixedly arranged at the center of the front end plate, the other end of the oil inlet pipe stretches into the center through hole of the screen end plate, a bearing is arranged between the screen end plate and the center through hole, the inner diameter of a rotating ring is consistent with the inner diameter of a roller screen, an inner ring of the rotating ring is rotatably arranged on a rear end plate of the shell through the bearing, and an outer ring of the rotating ring is provided with a gear ring; the screen cloth rotary driving assembly comprises a rotating motor, a rotating driving shaft and a driving gear, wherein the rotating motor is arranged on the outer side of the rear end plate relative to the screen cloth, the output shaft of the rotating motor is connected with the rotating driving shaft, the rotating driving shaft penetrates through the rear end plate to enter a space between the screen cloth and the shell, the driving gear is fixedly arranged at the end part of the rotating driving shaft, and the driving gear is meshed with the gear ring of the outer ring of the rotating ring.

Preferably, the automatic oil pumping device further comprises a control circuit, wherein the control circuit comprises a single-chip microcomputer controller, and the single-chip microcomputer controller is respectively in control connection with the outer liquid level sensor, the inner liquid level sensor, the rotating motor, the winch drum, the oil inlet switch valve, the oil pump and the slag pump.

On the other hand, the application method of the impurity filtering device for the lubricating oil production is also provided, wherein the liquid level in the oil inlet space is detected by an inner liquid level sensor and then the opening and closing of an oil inlet switch valve, the rotation of a winch drum and the start and stop of a slag pump are controlled by the detection of the liquid level; meanwhile, the liquid level difference between the oil inlet space and the oil outlet space is detected by an inner liquid level sensor and an outer liquid level sensor, and then the opening and closing of an oil inlet switch valve, the rotating speed of a rotating motor and the power of an oil pump are controlled according to the difference; setting the highest liquid level of the lubricating oil level in the oil inlet space as the oil inlet height of the oil inlet pipe, and setting the lowest liquid level as the height position of one fourth of the radius of the screen; the single chip microcomputer controller controls the impurity filtering device for lubricating oil production to comprise an oil inlet cycle, an oil filtering cycle and a delay cycle.

Preferably, the oil feed cycle is: when the internal liquid level sensor detects that the lubricating oil in the oil inlet space is the lowest liquid level, the oil inlet switch valve is opened, so that the oil level in the oil inlet space gradually reaches the highest liquid level from the lowest liquid level, and in the process of the oil level in the oil inlet space from the lowest liquid level to the highest liquid level, the winch drum rotates anticlockwise to control the tilting plate to be horizontal from the tilting, and the synchronous winch drum controls the spray head to be vertical from the tilting; the oil filtration cycle is as follows: when the inner liquid level sensor detects that the lubricating oil in the oil inlet space reaches the highest liquid level, the oil inlet switch valve is closed, the rotating motor and the oil pump are started, when the inner liquid level sensor detects that the lubricating oil in the oil inlet space starts to descend, the slag pump is started, the winch drum rotates clockwise to control the pouring plate to incline from the horizontal direction, and the synchronous winch drum controls the spray head to incline from the vertical direction.

Preferably, the delay cycle is: and when the outer liquid level is higher than the inner liquid level, the power of the oil pump is increased, the rotating speed of the rotating motor is increased, the inclined posture of the dumping plate and the nozzle is kept, so that the oil outlet efficiency of the oil outlet space is improved, and the oil inlet circulation is carried out until the liquid level of the oil outlet space is lower than the height position where the difference of the liquid level of the oil inlet space is larger than one quarter of the radius of the screen.

The beneficial effects of the invention are as follows:

1. according to the device, under the condition that the oil level in the screen is higher, the pouring plate is changed into the horizontal state from the inclination, and the spray head is changed into the vertical state from the inclination, so that the residence time of the mixture of impurities and lubricating oil on the pouring plate can be prolonged, lubricating oil components in the mixture are sufficiently filtered out from the pouring plate through vertical blowing, and the lubricating oil content in the impurities is reduced; when the oil level in the screen is lower, the impurity content on the pouring plate is relatively more, the fluidity of the impurity mixture is reduced, the pouring plate is controlled to incline at the moment, and the spray head is controlled to blow slag towards the slag discharging direction, so that the impurity discharging efficiency is improved; by detecting the height difference of the inner liquid level and the outer liquid level and simultaneously setting delay circulation, the height of the outer liquid level is ensured not to be higher than the height of the inner liquid level for a long time, and the filtering efficiency of the screen is improved;

2. this application is including hoist cylinder through setting up angle adjustment subassembly, and hoist cylinder goes up to twine respectively towards opposite direction has toppling over board control cable wire and shower nozzle control cable wire for only need control hoist cylinder at every turn rotate to a direction just can make in step to topple over board and shower nozzle and rotate in step, simplified synchronous rotation control's mode, and carry out coordinated cooperation control with this rotation process and liquid level's detection, make the liquid level in the filter equipment remain in the state that is favorable to straining oil, slagging-off and reduce lubricating oil content in the impurity all the time.

Drawings

FIG. 1a is a schematic view of the liquid level in the screen being low and the liquid level in the housing being below the lowest position of the screen;

FIG. 1b is a schematic view of the screen having a higher liquid level in the screen and a lower liquid level in the housing than the lowest position of the screen;

FIG. 1c is a schematic illustration of the liquid level in the housing being higher than the liquid level in the screen;

FIG. 2 is a schematic view of a structure of the impurity filtering device for lubricating oil production of the present application;

FIG. 3 is another schematic view of the impurity filtering device for lubricating oil production of the present application;

FIG. 4 is a schematic diagram of a control scheme for lube impurity filtration of the present application;

in the figure: the device comprises a shell 1, a screen 2, an oil inlet pipe 3, a screen rotary driving assembly 4, an impurity dumping assembly 5, a rotary spray head assembly 6, an angle adjusting assembly 7, an outer liquid level sensor 8, an inner liquid level sensor 9, a control circuit 10, a lubricating oil circuit 11, a front end plate 12, a rear end plate 13, a screen end plate 21, a roller screen 22, a rotary ring 23, a rotary motor 41, a rotary driving shaft 42, a driving gear 43, a dumping seat 51, a dumping plate 52, a connecting seat 53, a steel rope bolt 54, a guide roller one 55, a flexible connecting sleeve 56, a dumping through hole 57, a spray head mounting hole 61, a spray head 62, a control rod 63, a tension spring 64, a spring bolt 65, a guide roller two 66, a roller 71, a dumping plate control steel rope 72, a spray head control steel rope 73, an oil pipeline 111, an oil outlet pipeline 112, a slag outlet pipeline 113, an oil inlet switch valve 1111, an oil pump 1121, a slag pump 1131 and a singlechip controller 101.

Description of the embodiments

The following detailed description of the invention refers to the accompanying drawings and preferred embodiments.

As shown in fig. 1, in the conventional state, there are three states of the height of the oil level in the screen 2 of the filtering device and the housing 1: a. the liquid level in the screen 2 is low, and the liquid level in the shell 1 is lower than the lowest position of the screen; b. the liquid level in the screen 2 is higher, and the liquid level in the shell 1 is lower than the lowest position of the screen; c. the liquid level in the housing 1 is higher than the liquid level in the screen 2. Because the oil is always injected into the screen in the production process of the lubricating oil, the oil level in the filtering device is always in a state b, namely the oil level in the screen is higher due to the continuous oil injection; in the case of a screen with a long run of oil and less pumping power, it will normally be in state c, whereas state a is less present in the normal case. However, the present invention is to control the liquid level in the filter device in the state a as long as possible. Because, if the liquid level in the screen cloth is higher, the impurity oil content that derives on the screen cloth is high, if the liquid level in the shell is high, is unfavorable for the infiltration of lubricating oil in the screen cloth, production efficiency is low. The states b and c generally correspond to two working conditions of oiling and long-term filtering, so that the invention aims to control the states b and c to the state a by arranging inner and outer liquid level sensors.

The structure of the impurity filtering device for lubricating oil production according to the invention is schematically shown in fig. 2-3. The impurity filtering device for the production of the lubricating oil comprises a shell 1, a screen 2, an oil inlet pipe 3, a screen rotary driving assembly 4, an impurity dumping assembly 5, a rotary spray head assembly 6, an angle adjusting assembly 7, an outer liquid level sensor 8, an inner liquid level sensor 9, a control circuit 10 and a lubricating oil circuit 11. The shell 1 is of a hollow cylinder structure, the screen 2 is of a roller-shaped screen structure, the screen 2 is rotatably installed in the shell 1 through a bearing, and the oil inlet pipe 3 extends into the screen 2 from the end of the shell 1. The housing 1 has a front end plate 12 and a rear end plate 13. The screen 2 comprises a screen end plate 21, a roller screen 22 and a rotating ring 23. The roller screen 22 has mesh holes for filtering impurities of the lubricating oil, which allow only the lubricating oil to pass therethrough and retain the impurities inside the roller screen 22. One end of the roller screen 22 is fixedly provided with a screen end plate 21, and the other end of the roller screen 22 is provided with a rotating ring 23. The center of screen end plate 21 is provided with central through-hole, and oil feed pipe 3 one end fixed mounting is in the center of front end version 12, and the other end stretches into the central through-hole of screen end plate 21, is provided with the bearing between screen end plate 21 and the central through-hole. The inner diameter of the rotating ring 23 is identical to the inner diameter of the roller screen 22, the inner ring of the rotating ring 23 is rotatably mounted on the rear end plate 13 of the housing 1 through a bearing, and a gear ring is arranged on the outer ring of the rotating ring 23. The screen rotation driving unit 4 includes a rotary motor 41, a rotary driving shaft 42, and a driving gear 43, the rotary motor 41 is mounted on the outer side of the rear end plate 13 with respect to the screen 2, an output shaft of the rotary motor 41 is connected with the rotary driving shaft 42, the rotary driving shaft 42 passes through the rear end plate 13 to enter a space between the screen 2 and the housing 1, the driving gear 43 is fixedly mounted on an end portion of the rotary driving shaft 42, and the driving gear 43 is meshed with a gear ring of an outer ring of the rotary ring 23. The screen 2 can be rotated inside the housing 1 by driving the rotary motor 41.

The screen 2 and the rear end plate 13 form a cylindrical oil inlet space, an oil outlet space is formed between the screen 2 and the inner wall of the shell 1, unfiltered lubricating oil enters the oil inlet space through the oil inlet pipe 3, and then the unfiltered lubricating oil enters the oil outlet space after being filtered by the screen 2, and impurities are reserved on the roller screen 22. At the bottom of the housing 1, an oil outlet 14 is provided, and the filtered lubricating oil is drawn out from the oil outlet space through the oil outlet 14.

In the oil inlet space, an impurity dumping assembly 5 is also arranged. The impurity dumping assembly 5 is arranged at the top of the oil inlet space and comprises a dumping seat 51, a dumping plate 52, a connecting seat 53, a steel cable bolt 54, a first guide roller 55, a flexible connecting sleeve 56 and a dumping through hole 57. The pouring seat 51 is fixedly arranged on the rear end plate 13 in the oil inlet space, the pouring plate 52 is of a strip plate-shaped structure and extends along the length direction of the screen 2, the bottom of the pouring plate 52, which is close to the rear end plate 13, is provided with a connecting seat 53, and the connecting seat 53 is hinged with the pouring seat 51. On the top surface of the end of the pouring plate 52 remote from the rear end plate 13, a wire rope latch 54 and a guide roller one 55 are provided in this order. At the position of the rear end plate 13 with respect to the pouring plate 52, a pouring through hole 57 is provided, and a flexible connecting sleeve is provided between the pouring through hole 57 and the pouring plate 52. The plate body of the dumping plate 52 is also in a screen-shaped structure, so that lubricating oil can pass through the dumping plate to retain impurities.

A rotary shower head assembly 6 is provided on the housing 1 at a position directly above the impurity dumping assembly 5. The rotary sprayer assembly 6 includes a row of sprayer mounting holes 61 arrayed along the length of the housing. The head mounting hole 61 is in the shape of a bell mouth opening toward the inside of the housing 1 and penetrates the inside and outside of the housing 1. A head 62 is rotatably mounted in each head mounting hole 61. The nozzle of the spray head 62 faces the screen 2 at the bottom, and gas can be sprayed from the spray head 62 to blow impurities on the screen 62 onto the pouring plate 52. The tail of each spray head 62 extends out of the shell 1, a control rod 63 is hinged with the tail of each spray head 62, and the spray heads 62 can be synchronously rotated through the left-right translation of the control rod 63. At the end of the control rod 63 remote from the rear end plate 13, a tension spring 64 is connected, and the other end of the tension spring 64 is fixed to a latch 65 on the housing. In the condition that the control lever 63 is not controlled by the angle adjustment assembly 7, the tension spring 64 pulls the control lever 63 to the extreme position away from the rear end plate 13, at which time the nozzle of each spray head 62 rotates to the inclined extreme position toward the rear end plate 13. Further, a second guide roller 66 is mounted on the housing 1 with respect to the rear of the rotary head assembly 6.

On the outside of the rear end plate 13, an angle adjustment assembly 7 is provided. The angle adjustment assembly 7 includes a winding drum 71. The winch drum 71 is wound with a dump plate control wire 72 and a shower head control wire 73 in opposite directions, respectively. The dumping plate control steel cable 72 is wound on the winding drum 71 anticlockwise, and the end part of the dumping plate control steel cable extends out of the winding drum 71, passes through the dumping through hole 57, extends along the dumping plate 52, bypasses the first guide roller 55 and is fixed on the steel cable bolt 54; the head control wire 73 is wound around the winding drum 71 clockwise, and its end portion extends upward after extending out of the winding drum 71, and then is fixed at the end portion of the control lever 63 toward the rear end plate 13 after bypassing the guide roller two 66.

The angle adjusting component 7 controls the impurity dumping component 5 and the rotary nozzle component 6 to be in two states, namely a retaining state and a dumping state. In the detained state, the winch drum 71 controls the tilting plate 52 to be in a horizontal position through the tilting plate control steel cable 72, the winch drum 71 controls the spray head 62 to be in a vertical position through the spray head control steel cable 73, and the spray head 62 is perpendicular to the tilting plate 52; in the transition from the left-behind state to the toppling state, the winding drum 71 rotates clockwise, the toppling panel control cable 72 pulls the toppling panel 52 to rotate clockwise to assume the toppling posture, and the shower head control cable 73 releases the length, thereby rotating the shower head 62 counterclockwise. In the retention state, the impurities on the screen 2 are blown onto the pouring plate by the nozzle 62, and due to the vertical blowing of the nozzle 62 and the horizontal position of the pouring plate 52, the mixture of the impurities on the pouring plate 52 and the lubricating oil is retained on the pouring plate 52, and the lubricating oil in the mixture is fully oozed out of the pouring plate 52 in the retention process. In the pouring state, impurities on the pouring plate 52 are poured out of the pouring through holes 57 due to the air injection of the nozzle 62 to one side and the inclination of the pouring plate 52.

An outer liquid level sensor 8 is provided on the front end plate 12 in the oil outlet space, and an inner liquid level sensor 9 is provided on the rear end plate 13 in the oil inlet space. The outer liquid level sensor 8 and the inner liquid level sensor 9 are both conventional infrared ranging sensing devices, the outer liquid level sensor 8 is used for detecting the liquid level of the lubricating oil in the oil outlet space, and the inner liquid level sensor 9 is used for detecting the liquid level of the lubricating oil in the oil inlet space.

The lubricating oil path 11 of the present invention includes an oil inlet pipe 111, an oil outlet pipe 112, and a slag outlet pipe 113. Wherein, the oil inlet pipeline 111 is connected to the oil inlet pipe 3, and an oil inlet switch valve 1111 for controlling the opening and closing of oil inlet is arranged on the oil inlet pipeline 111; the oil outlet pipeline 112 is connected to the oil outlet hole 14, and an oil pump 1121 for pumping oil is arranged on the oil outlet pipeline 112; the slag discharging pipe 113 is connected to the pouring through hole 57, impurities accumulated on the pouring plate 52 are discharged from the slag discharging pipe 113 through the pouring through hole 57, and a slag pump 1131 is provided on the slag discharging pipe 113. The control circuit 10 comprises a single-chip microcomputer controller 101, and the single-chip microcomputer controller 101 is respectively in control connection with the outer liquid level sensor 8, the inner liquid level sensor 9, the rotating motor 41, the winch drum 71, the oil inlet switch valve 1111, the oil pump 1121 and the slag pump 1131.

The liquid level in the oil inlet space is detected through the internal setting of the singlechip controller 101 and then the opening and closing of the oil inlet switch valve 1111 and the rotation of the winch drum 71 and the start and stop of the slag pump 1131 are controlled through the detection of the liquid level; meanwhile, the single-chip controller 101 is internally provided with a liquid level difference value between the oil inlet space and the oil outlet space detected by the inner liquid level sensor 9 and the outer liquid level sensor 8, and then the opening and closing of the oil inlet switch valve 1111, the rotation speed of the rotary motor 41 and the power of the oil pump 1121 are controlled according to the difference value. The highest liquid level of the lubricating oil level in the oil inlet space is set to be the oil inlet height of the oil inlet pipe 3, and the lowest liquid level is set to be the height position of one fourth of the radius of the screen 2.

Fig. 4 shows a control manner of the impurity filtering of the lubricating oil according to the present application. The invention mainly comprises the following control cycle processes:

1. and (5) oil feeding circulation. When the internal liquid level sensor 9 detects that the lubricating oil in the oil inlet space is the lowest liquid level, the oil inlet switch valve 1111 is opened to gradually enable the oil level in the oil inlet space to reach the highest liquid level from the lowest liquid level, the winch drum 71 rotates anticlockwise to control the tilting plate 52 to be horizontal from the tilting and the synchronous winch drum 71 controls the spray head 62 to be vertical from the tilting in the process of the oil level in the oil inlet space from the lowest liquid level to the highest liquid level;

2. and (5) oil filtering circulation. When the inner liquid level sensor 9 detects that the lubricating oil in the oil inlet space reaches the highest liquid level, the oil inlet switch valve 1111 is closed, the rotary motor 41 and the oil pump 1121 are started, and when the inner liquid level sensor 9 detects that the lubricating oil in the oil inlet space starts to drop, the slag pump 1131 is started, and simultaneously the winch drum 71 rotates clockwise to control the tilting plate 52 to tilt from the horizontal direction, and the synchronous winch drum 71 controls the spray head 62 to tilt from the vertical direction.

3. Delay loops. And when the inner liquid level sensor 9 detects that the lubricating oil in the oil inlet space is the lowest liquid level, synchronously acquiring liquid level data of the outer liquid level sensor 8, calculating a difference value between the inner liquid level and the outer liquid level, when the outer liquid level is higher than the inner liquid level, increasing the power of the oil pump 1121, increasing the rotating speed of the rotating motor 41, maintaining the inclined posture of the dumping plate 52 and the spray head 62 to improve the oil outlet efficiency of the oil outlet space, and entering the oil inlet circulation until the liquid level of the oil outlet space is lower than the height position where the difference value of the liquid level of the oil inlet space is more than one quarter of the radius of the screen 2.

Through the above operation, under the condition that the oil level in the screen 2 is high, the pouring plate 52 can be changed from the inclination to the horizontal, and the spray head 62 is changed from the inclination to the vertical, so that the residence time of the mixture of impurities and lubricating oil on the pouring plate can be improved, lubricating oil components in the mixture are sufficiently filtered out of the pouring plate through vertical spraying, and the lubricating oil content in the impurities is reduced; when the oil level in the screen is lower, the impurity content on the pouring plate is relatively more, the fluidity of the impurity mixture is reduced, the pouring plate is controlled to incline at the moment, and the spray head is controlled to blow slag towards the slag discharging direction, so that the impurity discharging efficiency is improved; by detecting the height difference of the inner liquid level and the outer liquid level and simultaneously setting delay circulation, the height of the outer liquid level is ensured not to be higher than the height of the inner liquid level for a long time, and the filtering efficiency of the screen 2 is improved.

The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims

1. A device for filtering impurities in lubricating oil production comprises a shell, a screen, an impurity dumping assembly, a rotary nozzle assembly and an angle adjusting assembly; the shell is provided with a front end plate and a rear end plate, the screen is rotatably arranged in the shell through a bearing, a cylindrical oil inlet space is formed by the screen and the rear end plate, and an oil outlet space is formed between the screen and the inner wall of the shell; the method is characterized in that:

the angle adjusting component controls the impurity dumping component and the rotary nozzle component to be in two states, namely a retention state and a dumping state; in the retaining state, the winch drum controls the steel rope to control the dumping plate to be in a horizontal position through the dumping plate, the winch drum controls the steel rope to be in a vertical position through the spray head, and the spray head is perpendicular to the dumping plate; in the transition process from the detained state to the toppling state, the winch roller rotates clockwise, the toppling plate controls the steel cable to pull the toppling plate to rotate clockwise to form a toppling posture, and meanwhile, the spray head controls the length of the steel cable to be released, so that the spray head rotates anticlockwise;

the impurity dumping assembly further comprises a dumping base, a connecting base, a steel cable bolt, a first guide roller, a flexible connecting sleeve and a dumping through hole, wherein the dumping base is fixedly arranged on a rear end plate in the oil inlet space, the dumping plate is of a strip plate-shaped structure and extends along the length direction of the screen, the bottom of the dumping plate, which is close to the rear end plate, is provided with the connecting base, and the connecting base is hinged with the dumping base; a steel cable bolt and a first guide roller are sequentially arranged on the top surface of one end of the dumping plate, which is far away from the rear end plate; the rear end plate is provided with a dumping through hole relative to the dumping plate, a flexible connecting sleeve is arranged between the dumping through hole and the dumping plate, and the dumping plate body is of a screen mesh structure; the dumping plate controls the steel cable to wind on the winding drum anticlockwise, the end part of the steel cable extends out of the winding drum and then passes through the dumping through hole, then the steel cable extends along the dumping plate, bypasses the guide roller I and is fixed on the steel cable bolt;

the rotary spray head assembly comprises a row of spray head mounting holes arranged in an array along the length direction of the shell; the spray head mounting hole is in a horn mouth shape which faces the inner opening of the shell and penetrates through the inner part and the outer part of the shell; a spray head is rotatably arranged in each spray head mounting hole; the nozzles of the spray heads are opposite to the screen mesh at the bottom, the tail part of each spray head extends out of the shell, a control rod is hinged with the tail part of each spray head, and the spray heads can be synchronously rotated through the left-right translation of the control rod; one end of the control rod, which is far away from the rear end plate, is connected with an extension spring, and the other end of the extension spring is fastened and fixed with a spring bolt on the shell; a second guide roller is arranged on the shell relative to the tail part of the rotary spray head assembly; the spray head control steel cable is wound on the winding drum clockwise, and the end part of the spray head control steel cable extends upwards after extending out of the winding drum and then is fixed at the end part of the control rod, which faces the rear end plate, after bypassing the guide roller II;

an outer liquid level sensor is arranged on the front end plate in the oil outlet space, and an inner liquid level sensor is arranged on the rear end plate in the oil inlet space;

the device also comprises a lubricating oil path and an oil inlet pipe, wherein the lubricating oil path comprises an oil inlet pipe, an oil outlet pipe and a slag outlet pipe; the oil inlet pipeline is connected to the oil inlet pipe, and an oil inlet switching valve for controlling the opening and closing of oil inlet is arranged on the oil inlet pipeline; the oil outlet pipeline is connected to an oil outlet hole on the shell, and an oil pump for pumping oil is arranged on the oil outlet pipeline; the slag discharging pipeline is connected to the dumping through hole, impurities accumulated on the dumping plate are discharged from the slag discharging pipeline after passing through the dumping through hole, and a slag pump is arranged on the slag discharging pipeline.

2. A lubricating oil production impurity filtering apparatus as defined in claim 1, wherein: the screen comprises a screen end plate, a roller screen and a rotating ring; the roller screen is provided with a screen hole capable of filtering lubricating oil impurities; one end of the roller screen is fixedly provided with a screen end plate, and the other end of the roller screen is provided with a rotating ring; the center of the screen end plate is provided with a center through hole, one end of an oil inlet pipe is fixedly arranged at the center of the front end plate, the other end of the oil inlet pipe stretches into the center through hole of the screen end plate, a bearing is arranged between the screen end plate and the center through hole, the inner diameter of a rotating ring is consistent with the inner diameter of a roller screen, an inner ring of the rotating ring is rotatably arranged on a rear end plate of the shell through the bearing, and an outer ring of the rotating ring is provided with a gear ring; the screen cloth rotary driving assembly comprises a rotating motor, a rotating driving shaft and a driving gear, wherein the rotating motor is arranged on the outer side of the rear end plate relative to the screen cloth, the output shaft of the rotating motor is connected with the rotating driving shaft, the rotating driving shaft penetrates through the rear end plate to enter a space between the screen cloth and the shell, the driving gear is fixedly arranged at the end part of the rotating driving shaft, and the driving gear is meshed with the gear ring of the outer ring of the rotating ring.

3. A lubricating oil production impurity filtering apparatus as defined in claim 2, wherein: the control circuit comprises a single-chip microcomputer controller, and the single-chip microcomputer controller is respectively in control connection with the outer liquid level sensor, the inner liquid level sensor, the rotating motor, the winch drum, the oil inlet switch valve, the oil pump and the slag pump.

4. A method of using a lubricating oil production impurity filtering apparatus as claimed in claim 3, wherein: the single chip microcomputer controller is internally provided with a sensor for detecting the liquid level in the oil inlet space, and then the opening and closing of an oil inlet switch valve, the rotation of a winch drum and the start and stop of a slag pump are controlled through the detection of the liquid level; meanwhile, the liquid level difference between the oil inlet space and the oil outlet space is detected by an inner liquid level sensor and an outer liquid level sensor, and then the opening and closing of an oil inlet switch valve, the rotating speed of a rotating motor and the power of an oil pump are controlled according to the difference; setting the highest liquid level of the lubricating oil level in the oil inlet space as the oil inlet height of the oil inlet pipe, and setting the lowest liquid level as the height position of one fourth of the radius of the screen; the single chip microcomputer controller controls the impurity filtering device for lubricating oil production to comprise an oil inlet cycle, an oil filtering cycle and a delay cycle.

5. The method for using a lubricating oil production impurity filtering device as defined in claim 4, wherein: the oil inlet cycle is as follows: when the internal liquid level sensor detects that the lubricating oil in the oil inlet space is the lowest liquid level, the oil inlet switch valve is opened, so that the oil level in the oil inlet space gradually reaches the highest liquid level from the lowest liquid level, and in the process of the oil level in the oil inlet space from the lowest liquid level to the highest liquid level, the winch drum rotates anticlockwise to control the tilting plate to be horizontal from the tilting, and the synchronous winch drum controls the spray head to be vertical from the tilting; the oil filtration cycle is as follows: when the inner liquid level sensor detects that the lubricating oil in the oil inlet space reaches the highest liquid level, the oil inlet switch valve is closed, the rotating motor and the oil pump are started, when the inner liquid level sensor detects that the lubricating oil in the oil inlet space starts to descend, the slag pump is started, the winch drum rotates clockwise to control the pouring plate to incline from the horizontal direction, and the synchronous winch drum controls the spray head to incline from the vertical direction.

6. The method for using the lubricating oil production impurity filtering device according to claim 5, wherein: the delay cycle is: and when the outer liquid level is higher than the inner liquid level, the power of the oil pump is increased, the rotating speed of the rotating motor is increased, the inclined posture of the dumping plate and the nozzle is kept, so that the oil outlet efficiency of the oil outlet space is improved, and the oil inlet circulation is carried out until the liquid level of the oil outlet space is lower than the height position where the difference of the liquid level of the oil inlet space is larger than one quarter of the radius of the screen.