A high-precision negative pressure lubricating oil filtering device

Abstract

The application discloses a kind of negative pressure type high-precision lubricating oil filtering device, it is related to lubricating oil filtering device field, and its technical solution main point is: including initial filter tank, heating tank, oil storage tank, ultrafiltration membrane filtering device and vacuum assembly, ultrafiltration membrane filtering device includes filter box and ultrafiltration membrane assembly, installation groove is opened in filter box, and a plurality of installation grooves are equipped with filter core gland, filter core gland is equipped with three-way pipe, and three-way pipe is provided with ultrafiltration oil outlet pipe and backflush pipe mouth.The application adopts high-precision membrane filtration technology, can directly filter the suspended particles in lubricating oil, improve the use effect of lubricating oil, extract air in vacuum assembly, by negative pressure filtration technology, so that filtration speed is faster and impurities after filtration is not easy to adhere to ultrafiltration filter core, and air compressor gas source is connected with backflush pipe mouth by operator, can separate the impurities adhered to ultrafiltration filter core from ultrafiltration filter core, so that ultrafiltration filter core can be used for a long time, reduce the cost of production.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of lubricating oil filtering device, more particularly, it relates to a negative pressure type high-precision lubricating oil filtering device. BACKGROUND

[0002] Lubricating oil is used in various types of vehicles, mechanical equipment to reduce friction, protect the liquid or semi-solid lubricant of mechanical and machining parts, mainly plays the role of lubrication, auxiliary cooling, rust prevention, cleaning, sealing and buffering.

[0003] Lubricating oil in transportation, storage and circulation lubrication, inevitably into all kinds of sundries, in order to keep the lubricating oil clean, improve the lubricating efficiency, so before refueling and lubricating oil circulation process must be filtered, the existing lubricating oil filtering device in industrial filter element precision is basically 1 microns, in the process of using positive pressure filtration, the filtered filter material is easy to block the filter hole of industrial filter element, so that the filter element cannot be used for a long time, and needs to be replaced many times, resulting in high cost, and the lubricating oil to be filtered generally contains some suspended particles, such as oxidized colloid (0.75-0.35 microns), so that the industrial filter element with a precision of 1 micron cannot filter them, so that there are still many impurities in the filtered lubricating oil, thereby affecting the application effect of the lubricating oil.

[0004] Therefore, a new scheme needs to be proposed to solve this problem. SUMMARY

[0005] In view of the deficiencies of the prior art, the purpose of the present application is to provide a negative pressure type high-precision lubricating oil filtering device.

[0006] The above technical purpose of the present application is realized by the following technical scheme: a negative pressure type high-precision lubricating oil filtering device, comprising a primary filter tank, a heating tank, an oil storage tank, an ultrafiltration membrane filtering device and a vacuum assembly, the ultrafiltration membrane filtering device comprises a filter box body and an ultrafiltration membrane assembly, a plurality of mounting grooves for mounting the ultrafiltration membrane assembly are formed on the filter box body, a filter element gland for closing the mounting groove is detachably connected to each of the plurality of mounting grooves, a three-way pipe in communication with the filter box body is arranged on the top of the filter element gland, the three-way pipe is arranged in T shape, an ultrafiltration oil outlet pipe and a backflush pipe opening are arranged at the left and right ends of the three-way pipe respectively, an ultrafiltration oil outlet solenoid valve close to the ultrafiltration oil outlet and a backflush solenoid valve close to the backflush pipe opening are arranged on the three-way pipe, the ultrafiltration oil outlet pipe is connected with the vacuum assembly, the ultrafiltration membrane assembly comprises an ultrafiltration filter element, and an ultrafiltration filter hole with a pore size less than 0.2 microns is arranged on the ultrafiltration filter element.

[0007] By adopting the above technical scheme, when the operator filters the lubricating oil, high-precision membrane filtration technology is adopted, the pore size of the ultrafiltration filter core is less than 0.2 microns, the suspended particles in the lubricating oil can be directly filtered, the treated lubricating oil is relatively clean, the use effect of the lubricating oil is improved, the air in the vacuum assembly is extracted, a negative pressure is formed in the vacuum assembly, the ultrafiltration oil pipe is connected with the vacuum assembly, the lubricating oil is directly filtered through the ultrafiltration filter core and then enters the vacuum assembly, the negative pressure filtration technology is adopted, the filtration speed is fast, and the impurities after filtration are not easy to adhere to the ultrafiltration filter core due to gravity, and the backflushing pipe opening is arranged on the three-way pipe, the operator can connect the air compressor source with the backflushing pipe opening and separate the impurities adhered to the ultrafiltration filter core from the ultrafiltration filter core, so that the ultrafiltration filter core can be used for a long time, the use time of the ultrafiltration filter core is increased, and the production cost is reduced.

[0008] The application further provides that: the primary filter tank comprises a primary filter body, a primary filter closed cover, a primary filter oil outlet pipe, an oil inlet pipe, a filter bag and a filter electromagnetic valve, the primary filter closed cover is installed above the primary filter body, the filter electromagnetic valve is arranged above the primary filter closed cover, the oil inlet pipe and the primary filter oil outlet pipe are installed on the primary filter body, an oil inlet electromagnetic valve is installed on the oil inlet pipe, a backflow pipe one is arranged between the oil inlet electromagnetic valve and the oil inlet pipe, the filter bag comprises a mounting ring and a filter screen, an annular mounting seat located below the oil inlet pipe is installed on the inner circumferential wall of the primary filter body, a plurality of T-shaped embedded blocks are installed below the mounting ring, a plurality of embedded grooves same as the number of the embedded blocks are formed in the mounting seat, a rotating groove is formed in one side wall of the same direction of the embedded grooves, neither the embedded grooves nor the rotating groove is communicated with the bottom surface of the mounting seat, a rubber ring abutting against the outer circumferential wall of the mounting ring is installed on the mounting seat, and a rotating handle groove is formed in the inner side wall of the mounting ring.

[0009] By adopting the above technical scheme, the operator opens the oil inlet electromagnetic valve, so that the lubricating oil directly passes through the filter bag and enters the next process from the primary filter oil outlet pipe, the arrangement of the filter electromagnetic valve enables the operator to put air into the primary filter body when opening the primary filter closed cover, thereby facilitating the operator to open the primary filter closed cover, when the operator needs to replace the filter bag, the operator embeds the embedded blocks installed below the mounting ring into the embedded grooves, at this time, the rubber ring on the mounting seat abuts against the outer end of the mounting ring, the operator rotates the mounting ring by inserting the hand into the handle groove, so that the embedded blocks enter the rotating grooves, the filter bag can be quickly installed on the mounting seat by clamping rotation, the arrangement facilitates the operator to quickly install the filter bag, the rubber ring seals the outer circumferential wall of the mounting ring, the lubricating oil is not easy to enter the embedded grooves, and the arrangement of the handle groove provides a force point for the operator to rotate the mounting ring, so that the operator rotates the mounting ring more labor-saving.

[0010] The application is further provided with: the heating tank comprises a heating main tank, a heating oil inlet pipe, a heating oil outlet pipe and three heating rods, the heating oil inlet pipe is connected with the primary filtration oil outlet pipe through the oil pump one, the heating oil inlet pipe is located at the bottom of the heating main tank, the heating oil outlet pipe is located at the upper part of the heating main tank, and the three heating rods are evenly arranged in the heating main tank.

[0011] By adopting the above technical scheme, the oil pump one is connected, and the oil pump one provides power for the lubricating oil, so that the lubricating oil in the primary filtration tank can quickly enter the heating main tank, the number of the heating rods in the heating main tank is three, so that the heating of the lubricating oil in the heating main tank is more uniform, and the heating efficiency in the heating main tank is improved.

[0012] The application is further provided with: the oil storage tank comprises an oil tank main body, an oil storage inlet pipe, an oil storage outlet pipe, a first liquid level controller, an air inlet pipe and an air outlet pipe, the oil storage inlet pipe is fixedly connected with the heating oil outlet pipe, and the air inlet pipe and the air outlet pipe are located at the upper end of the oil tank main body.

[0013] By adopting the above technical scheme, the oil tank main body plays a role in storing oil, serves as an intermediate process of the heating tank and the ultrafiltration membrane filtration device, and the first liquid level controller is arranged so that when the liquid level of the oil tank main body is high, the first liquid level controller controls the oil pump one to stop working, so that the liquid level in the oil tank main body no longer rises, and when the liquid level in the oil tank main body is low, the first liquid level controller controls the oil pump one to work, so that the liquid level in the oil tank main body rises, so that the first liquid level controller can automatically control the oil pump one, thereby preventing the oil level in the oil tank main body from being too high.

[0014] The application is further provided with: the filter box body is fixedly connected with a box bottom air outlet pipe and a box top air outlet pipe which are in communication with the inside, the number of the air inlet pipes is two, the two air inlet pipes are fixedly connected with the box bottom air outlet pipe and the box top air outlet pipe respectively, the filter box body is provided with an ultrafiltration oil inlet pipe and an ultrafiltration oil outlet pipe, the ultrafiltration oil inlet pipe is fixedly connected with the oil storage outlet pipe, the top of the filter box body is lower than the position where the oil storage outlet pipe is located, the bottom of the filter box body is provided with a reflux pipe two which is fixedly connected with a reflux pipe one, a circulating pump is arranged between the reflux pipe one and the reflux pipe two, and a plurality of adsorption nets for adsorbing particles are arranged on the inner wall of the filter box body.

[0015] By adopting the technical scheme, the top of the filter box is lower than the position where the oil storage and discharge pipe is located, so that the filter box can always keep the state of full oil, the gas outlet pipe at the bottom of the box and the gas outlet pipe at the top of the box are connected with the two gas inlet pipes respectively, so that the lubricating oil in the filter box is not easy to have bubbles, the filtering effect of the ultrafiltration filter element is improved, the circulation pump is connected with the reflux pipe one and the reflux pipe two, so that the lubricating oil in the filter box can flow back to the primary filter tank, so that the lubricating oil can flow back to the heating tank, the temperature of the oil is ensured, the impurities separated from the ultrafiltration filter element by the air compressor source can be adsorbed by the adsorption net, so that the impurities will not be suspended in the lubricating oil in the filter box, the use frequency of the backflushing process is reduced, and the service life of the ultrafiltration filter element is further improved.

[0016] The application is further provided that: the installation grooves are arranged close to the side walls of the filter box, the inner circumferential wall of the filter box is provided with a plurality of mounting blocks, the adsorption net comprises a fixing frame and an adsorption body, the mounting block is provided with a containing cavity for placing the fixing frame, a through groove is formed in the inner wall of the containing cavity away from the filter box, and a handle groove is formed in the inner side of the fixing frame.

[0017] By adopting the technical scheme, when the operator needs to replace the adsorption net, the operator puts the adsorption net into the installation groove and arranges the fixing frame close to the inner wall of the filter box, so as to put the adsorption net into the containing cavity, the through groove is formed in the side wall of the containing cavity, so that the adsorption body can be more easily contacted with the impurities, and the handle groove is arranged to facilitate the operator to take out the fixing frame from the containing cavity.

[0018] The application is further provided that: the vacuum assembly comprises a vacuum tank body, a vacuum tank oil inlet pipe, an oil outlet pipe, a vacuum pump, a vacuum tank air inlet and a vacuum tank air outlet, the vacuum tank oil inlet pipe is fixedly connected with the ultrafiltration oil outlet pipe through a vacuum electromagnetic valve, the vacuum tank air inlet and the vacuum tank air outlet are arranged at the upper end of the vacuum tank body, an air filter is connected between the vacuum pump and the vacuum air outlet, a second liquid level controller is fixedly connected to the vacuum tank body, a vacuum oil inlet tank is arranged between the vacuum tank oil inlet pipe and the vacuum tank body, a pressure gauge is arranged on the vacuum oil inlet tank, and a second oil pump is arranged on the oil outlet pipe.

[0019] Through the above technical scheme, the operator can extract the gas in the vacuum tank main body by the vacuum pump until the pressure gauge on the vacuum oil inlet tank reaches the standard, the second liquid level controller controls the vacuum electromagnetic valve, when the liquid level in the vacuum tank main body is high, the second liquid level controller controls the vacuum valve to be closed, and the vacuum tank air inlet and the oil pump two are opened, so that the lubricating oil in the vacuum tank main body goes out from the oil outlet pipe, when the filtered oil in the filter box body needs to be extracted, the vacuum tank air inlet is closed, and the vacuum electromagnetic valve is closed, the vacuum pump is opened to extract the gas in the vacuum tank main body, and the setting of the air filter can absorb the moisture in the gas in the vacuum tank main body, so as to not affect the use of the vacuum pump.

[0020] The application is further provided with: the lower end of the tee pipe is provided with a plurality of nozzles, the plurality of nozzles are distributed in a circular array around the central axis of the tee pipe, the plurality of nozzles are of the same size and all face different directions of the inner peripheral wall of the ultrafiltration filter element.

[0021] Through the above technical scheme, when the operator uses the backflush process to separate the impurities on the ultrafiltration filter element from the ultrafiltration filter element, the air compressor air source will spray air from each nozzle, because the nozzles are of the same size and face different directions of the ultrafiltration filter element, so that the impurities in different directions of the ultrafiltration filter element are cleaned more thoroughly.

[0022] The application is further provided with: the oil storage tank is provided with a controller, and the control lines of the first liquid level controller, the second liquid level controller, the oil pump one, the oil pump two, the ultrafiltration oil outlet electromagnetic valve, the backflush electromagnetic valve, the filter electromagnetic valve, the oil inlet electromagnetic valve and the vacuum electromagnetic valve are connected to the controller.

[0023] Through the above technical scheme, the controller controls the working process of each electromagnetic valve body, which is convenient for the operator to operate.

[0024] The application is further provided with: the mounting groove includes a circular groove and a square groove, the length of the square groove is greater than the diameter of the circular groove, the square groove is arranged at the middle position of the circular groove, and the square groove is in communication with the circular groove.

[0025] Through the above technical scheme, the square groove is arranged to facilitate the operator to put the adsorption net into the filter box body, and the circular groove is arranged to provide a larger moving space for the operator to place the adsorption net into the containing groove.

[0026] In summary, the present application has the following beneficial effects: when the operator filters the lubricating oil, high-precision membrane filtration technology is adopted, the pore size of the ultrafiltration filter core is less than 0.2 microns, the suspended particles in the lubricating oil can be directly filtered, the treated lubricating oil is relatively clean, the use effect of the lubricating oil is improved, the air in the vacuum assembly is extracted, thereby forming negative pressure in the vacuum assembly, the ultrafiltration oil pipe is connected with the vacuum assembly, the vacuum assembly directly passes the lubricating oil through the ultrafiltration filter core into the vacuum assembly, through the negative pressure filtration technology, the filtration speed is fast, and the impurities after filtration are not easy to adhere to the ultrafiltration filter core due to gravity, and the backflush pipe port is arranged on the tee pipe, the operator can connect the air compressor gas source with the backflush pipe port and separate the impurities adhered to the ultrafiltration filter core from the ultrafiltration filter core, so that the ultrafiltration filter core can be used for a long time, the use time of the ultrafiltration filter core is increased, and the production cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a structural schematic view of the present application;

[0028] Figure 2 It is a structural schematic view of the ultrafiltration membrane filtration device and the circulating pump in the present application;

[0029] Figure 3 It is a sectional view of the ultrafiltration membrane filtration device in the present application;

[0030] Figure 4 It is a structural schematic view of the oil storage tank in the present application;

[0031] Figure 5 It is a sectional view of the heating tank in the present application;

[0032] Figure 6 It is a sectional view of the primary filter tank in the present application;

[0033] Figure 7 It is a partial exploded view of the primary filter tank in the present application;

[0034] Figure 8 It is a structural schematic view of the oil delivery pump two and the vacuum assembly in the present application.

[0035] In the figure: 1, primary filter tank; 2, heating tank; 3, oil storage tank; 4, ultrafiltration membrane filter device; 5, vacuum assembly; 6, filter box body; 7, mounting groove; 8, filter core gland; 9, tee pipe; 10, ultrafiltration oil outlet pipe; 11, backflush pipe opening; 12, ultrafiltration oil outlet solenoid valve; 13, backflush solenoid valve; 14, ultrafiltration filter core; 15, ultrafiltration filter hole; 16, primary filter main body; 17, primary filter closure cover; 18, primary filtration oil outlet pipe; 19, oil inlet pipe; 20, filter bag; 21, through filter solenoid valve; 22, oil inlet solenoid valve; 23, return pipe one; 24, mounting ring; 25, filter screen; 26, mounting seat; 27, embedded block; 28, embedded groove; 29, rotation groove; 30, rubber ring; 31, rotation handle groove; 32, heating main body tank; 33, heating oil inlet pipe; 34, heating oil outlet pipe; 35, heating rod; 36, oil pump one; 37, oil tank main body; 38, oil storage oil inlet pipe; 39, oil storage oil outlet pipe; 40, first liquid level controller; 41, air inlet pipe; 42, air outlet pipe; 43, tank bottom air outlet pipe; 44, tank top air outlet pipe; 45, ultrafiltration oil inlet pipe; 46, return pipe two; 47, circulating pump; 48, adsorption screen; 49, mounting block; 50, fixing frame; 51, adsorption body; 52, containing cavity; 53, through groove; 54, handle groove; 55, vacuum tank main body; 56, vacuum tank oil inlet pipe; 57, oil outlet pipe; 58, vacuum pump; 59, vacuum tank air inlet; 60, vacuum tank air outlet; 61, vacuum solenoid valve; 62, air filter; 63, second liquid level controller; 64, vacuum oil inlet tank; 65, pressure gauge; 66, oil pump two; 67, circular groove; 68, square groove. DETAILED DESCRIPTION

[0036] The application will be described in detail below with reference to the drawings and examples.

[0037] A negative pressure type high-precision lubricating oil filter device, such as Figures 1-3As shown, including the initial filter tank 1, heating tank 2, oil tank 3, ultrafiltration membrane filter device 4 and vacuum assembly 5, ultrafiltration membrane filter device 4 includes filter box 6 and ultrafiltration membrane assembly, filter box 6 is provided with a plurality of installation groove 7 for installing ultrafiltration membrane assembly, installation groove 7 includes circular groove 67 and square groove 68, the length of square groove 68 is greater than the diameter of circular groove 67, square groove 68 is arranged in the middle position of circular groove 67 and the direction groove is communicated with circular groove 67, a plurality of installation groove 7 is detachably connected with filter core gland 8 for closing installation groove 7, filter core gland 8 top is provided with three-way pipe 9 communicated with filter box 6, three-way pipe 9 is T-shaped, the left and right ends of three-way pipe 9 are respectively provided with ultrafiltration oil outlet pipe 10 and backflush pipe 11, three-way pipe 9 is provided with ultrafiltration oil outlet electromagnetic valve 12 close to ultrafiltration oil outlet and backflush electromagnetic valve 13 close to backflush pipe 11, ultrafiltration oil outlet pipe 10 is connected with vacuum assembly 5, ultrafiltration membrane assembly includes ultrafiltration filter core 14, ultrafiltration filter core 14 is provided with ultrafiltration filter hole 15 with pore size of 0.18 microns, three-way pipe 9 lower end is provided with a plurality of spout, a plurality of spout is distributed in circular array with three-way pipe 9 center axis as axis, a plurality of spout is same and all towards the different direction of ultrafiltration filter core 14 inner wall.

[0038] As shown in the figure, Figures 6-7 The initial filter tank 1 includes an initial filter body 16, an initial filter closure cover 17, an initial filter oil outlet pipe 18, an oil inlet pipe 19, a filter bag 20 and a filter electromagnetic valve 21. The initial filter closure cover 17 is installed above the initial filter body 16. The filter electromagnetic valve 21 is arranged above the initial filter closure cover 17. The oil inlet pipe 19 and the initial filter oil outlet pipe 18 are installed on the initial filter body 16. The oil inlet pipe 19 is provided with an oil inlet electromagnetic valve 22. The oil inlet electromagnetic valve 22 and the oil inlet pipe 19 are provided with a backflow pipe 23. The filter bag 20 includes a mounting ring 24 and a filter screen 25. The inner wall of the initial filter body 16 is provided with an annular mounting seat 26 below the oil inlet pipe 19. The mounting ring 24 is provided with a plurality of T-shaped embedded blocks 27. The mounting seat 26 is provided with embedded grooves 28 with the same number as the embedded blocks 27. The side walls of the same direction of the embedded grooves 28 are provided with rotating grooves 29. The embedded grooves 28 and the rotating grooves 29 are not communicated with the bottom surface of the mounting seat 26. The mounting seat 26 is provided with a rubber ring 30 abutting the outer wall of the mounting ring 24. The inner wall of the mounting ring 24 is provided with a rotating handle groove 31.

[0039] As shown in the figure, Figure 5 The heating tank 2 includes a heating main tank 32, a heating oil inlet pipe 33, a heating oil outlet pipe 34 and heating rods 35. The heating oil inlet pipe 33 is connected with the initial filter oil outlet pipe 18 through an oil pump 36. The heating oil inlet pipe 33 is located at the bottom of the heating main tank 32. The heating oil outlet pipe 34 is located at the upper part of the heating main tank 32. The number of heating rods 35 is three. The three heating rods 35 are uniformly arranged in the heating main tank 32.

[0040] As Figure 4 shown, the oil tank 3 includes the tank body 37, the oil storage inlet pipe 38, the oil storage outlet pipe 39, the first liquid level controller 40, the air inlet pipe 41 and the air outlet pipe 42, the oil storage inlet pipe 38 is connected with the heating outlet pipe 34 by bolts, the air inlet pipe 41 and the air outlet pipe 42 are located at the upper end of the tank body 37, the oil tank 3 is provided with an observation window for observing the internal condition of the oil tank 3, the controller is installed on the oil tank 3, the control lines of the first liquid level controller 40, the second liquid level controller 63, the oil transfer pump one 36, the oil transfer pump two 66, the ultrafiltration oil outlet electromagnetic valve 12, the backflushing electromagnetic valve 13, the filter passing electromagnetic valve 21, the oil inlet electromagnetic valve 22 and the vacuum electromagnetic valve 61 are connected on the controller.

[0041] As Figures 1-3 shown, the filter box body 6 is provided with the tank bottom air outlet pipe 43 and the tank top air outlet pipe 44 which are communicated with the inside, the number of the air inlet pipe 41 is two, the two air inlet pipes 41 are respectively connected with the tank bottom air outlet pipe 43 and the tank top air outlet pipe 44 by bolts, the filter box body 6 is provided with the ultrafiltration oil inlet pipe 45, the ultrafiltration oil inlet pipe 45 is connected with the oil storage outlet pipe 39 by bolts, the top of the filter box body 6 is lower than the position where the oil storage outlet pipe 39 is located, the bottom of the filter box body 6 is provided with the backflow pipe two 46 which is fixedly connected with the backflow pipe one 23, the circulation pump 47 is arranged between the backflow pipe one 23 and the backflow pipe two 46, a plurality of adsorption nets 48 for adsorbing particles are arranged on the inner circumferential wall of the filter box body 6, a plurality of installation grooves 7 are arranged close to the side wall of the filter box body 6, a plurality of installation blocks 49 are arranged on the inner circumferential wall of the filter box body 6, the adsorption net 48 comprises a fixing frame 50 and an adsorption body 51, the installation block 49 is provided with a containing cavity 52 for placing the fixing frame 50, a through slot 53 is arranged on the inner wall of the containing cavity 52 away from the filter box body 6, a handle slot 54 is arranged on the inner side of the fixing frame 50.

[0042] As Figure 8 shown, the vacuum assembly 5 comprises the vacuum tank body 55, the vacuum tank oil inlet pipe 56, the oil outlet pipe 57, the vacuum pump 58, the vacuum tank air inlet 59 and the vacuum tank air outlet 60, the vacuum tank oil inlet pipe 56 is provided with the vacuum electromagnetic valve 61 between the ultrafiltration oil outlet pipe 10, the number of the ultrafiltration oil outlet pipe 10 is four, the four ultrafiltration oil outlet pipes 10 are fixedly connected with the vacuum tank oil inlet pipe 56 through the connecting pipe, the vacuum tank air inlet 59 and the vacuum tank air outlet 60 are arranged at the upper end of the vacuum tank body 55, the air filter 62 is connected between the vacuum pump 58 and the vacuum air outlet, the cooling machine for cooling the vacuum pump 58 is arranged on the vacuum pump 58, the second liquid level controller 63 is connected on the vacuum tank body 55 by bolts, the vacuum oil inlet tank 64 is arranged between the vacuum tank oil inlet pipe 56 and the vacuum tank body 55, the pressure gauge 65 is arranged on the vacuum oil inlet tank 64, the oil transfer pump two 66 is arranged on the oil outlet pipe 57.

[0043] Working process: the operator opens the oil inlet electromagnetic valve 22, so that the lubricating oil directly passes through the filter bag 20 and enters the next process from the primary filter oil outlet pipe 18, the setting of the filter electromagnetic valve 21 enables the operator to open the primary filter closure cover 17, so that the operator can put air into the primary filter body 16, thereby facilitating the operator to open the primary filter closure cover 17, when the operator needs to replace the filter bag 20, the operator inserts the embedded block 27 into the embedded groove 28 by installing the mounting ring 24, at this time the rubber ring 30 on the mounting seat 26 is in contact with the outer end of the mounting ring 24, the operator rotates the mounting ring 24 by inserting his hand into the handle groove 54, so that the embedded block 27 enters the rotating groove 29, and the filter bag 20 is quickly installed on the mounting seat 26 by clamping rotation, which facilitates the operator to quickly install the filter bag 20, the setting of the rubber ring 30 enables the outer peripheral wall of the mounting ring 24 to be sealed, and the lubricating oil is not easy to enter the embedded groove 28, the setting of the handle groove 54 provides a force point for the operator to rotate the mounting ring 24, so that the operator rotates the mounting ring 24 more labor-saving, and the lubricating oil passing through the filter bag 20 can filter out larger particles to reduce the pressure of subsequent filtration.

[0044] The subsequent lubricating oil enters the heating main body tank 32 through the oil pump 36, and is connected through the oil pump 36, which provides power for the lubricating oil, so that the lubricating oil in the primary filter tank 1 can quickly enter the heating main body tank 32, and the number of heating rods 35 in the heating main body tank 32 is three, so that the heating of the lubricating oil in the heating main body tank 32 is more uniform, thereby improving the heating efficiency of the heating main body tank 32, and after heating, entering the oil storage tank 3.

[0045] The oil tank body 37 serves as an oil storage function, as an intermediate process of the heating tank 2 and the ultrafiltration membrane filter device 4, the setting of the first liquid level controller 40 enables the first liquid level controller 40 to control the oil pump 36 to stop working when the liquid level of the oil tank body 37 is high, so that the liquid level in the oil tank body 37 no longer rises, and the lubricating oil in the oil tank body 37 enters the filter box 6 through the oil storage outlet pipe 39, when the liquid level in the oil tank body 37 is low, the first liquid level controller 40 controls the oil pump 36 to work, so that the liquid level in the oil tank body 37 rises, which enables the first liquid level controller 40 to automatically control the oil pump 36, thereby preventing the oil level in the oil tank body 37 from being too high.

[0046] The top of the filter box 6 is lower than the position where the oil storage and discharge pipe 39 is located, so that the filter box 6 can always maintain a full oil state, and the bottom gas outlet pipe 43 and the top gas outlet pipe 44 are connected with the two air inlet pipes 41 respectively, so that the lubricating oil in the filter box 6 is not easy to exist bubbles, improve the filtering effect of the ultrafiltration filter core 14, the return pipe one 23 and the return pipe two 46 are connected through the circulating pump 47, so that the lubricating oil in the filter box 6 can flow back to the primary filter tank 1, so that the lubricating oil can flow back to the heating tank 2 again, ensure the temperature of the oil, the filter box 6 adopts high-precision membrane filtration technology, the aperture of the ultrafiltration filter core 14 is less than 0.2 microns, the suspended particles in the lubricating oil can be directly filtered, so that the treated lubricating oil is relatively clean, thereby improving the use effect of the lubricating oil, the air in the vacuum assembly 5 is extracted, so that the negative pressure is formed in the vacuum assembly 5, the ultrafiltration oil outlet pipe 10 is connected with the vacuum assembly 5, so that the vacuum assembly 5 directly passes the lubricating oil through the ultrafiltration filter core 14 and then into the vacuum assembly 5, through the negative pressure filtration technology, the filtration speed is faster, and the impurities after filtration are not easy to adhere to the ultrafiltration filter core 14 due to the action of gravity, and the backflush pipe port 11 is arranged on the three-way pipe 9, the operator can connect the air compressor gas source with the backflush pipe port 11 and separate the impurities adhered to the ultrafiltration filter core 14 from the ultrafiltration filter core 14, so that the ultrafiltration filter core 14 can be used for a long time, the use time of the ultrafiltration filter core 14 is increased and the production cost is reduced, the impurities separated from the ultrafiltration filter core 14 by the air compressor gas source can be adsorbed by the adsorption net 48, so that the impurities will not be suspended in the lubricating oil in the filter box 6 in large quantities, the use frequency of the backflush process is reduced, and the service life of the ultrafiltration filter core 14 is further improved.

[0047] When the operator needs to replace the adsorption net 48, the operator puts the adsorption net 48 into the square slot 68, and the fixed frame 50 is attached to the inner wall of the filter box 6, so as to put the adsorption net 48 into the containing cavity 52, the through slot 53 is arranged on the side wall of the containing cavity 52, so that the adsorption body 51 can be more easily contacted with the impurities, the handle slot 54 is arranged to facilitate the operator to take out the fixed frame 50 from the containing cavity 52, the square slot 68 is arranged to facilitate the operator to put the adsorption net 48 into the filter box 6, and the circular slot 67 is arranged to provide a larger moving space for the operator to put the adsorption net 48 into the containing slot.

[0048] The nozzles are distributed in a circular array around the central axis of the three-way pipe 9, when the operator uses the backflush process to separate the impurities on the ultrafiltration filter core 14 from the ultrafiltration filter core 14, the air compressor gas source will spray air from each nozzle, because the nozzles are the same size and face different directions of the ultrafiltration filter core 14, so that the impurities in different directions of the ultrafiltration filter core 14 are cleaned more cleanly.

[0049] The operator can draw the gas in the vacuum tank body 55 through the vacuum pump 58 until the pressure gauge 65 on the vacuum oil inlet tank 64 reaches the standard. The second liquid level controller 63 controls the vacuum electromagnetic valve 61. When the liquid level in the vacuum tank body 55 is high, the second liquid level controller 63 controls the vacuum valve to be closed, and the vacuum tank air inlet 59 and the oil pump two 66 are opened, so that the lubricating oil in the vacuum tank body 55 goes out from the oil outlet pipe 57. When the filtered oil in the filter tank body 6 needs to be drawn, the vacuum tank air inlet 59 is closed, and the vacuum electromagnetic valve 61 is closed. The vacuum pump 58 is opened to draw the gas in the vacuum tank body 55. The air filter 62 is arranged to absorb the moisture in the gas in the vacuum tank body 55, so as not to affect the use of the vacuum pump 58.

[0050] The above is only the preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled persons in the art, some improvements and refinements without departing from the principles of the present application shall also be considered as the protection scope of the present application.

Claims

1. A negative pressure high-precision lubricating oil filtration device, characterized in that: The utility model provides a filter device, including primary filter tank (1), heating tank (2), oil storage tank (3), ultrafiltration membrane filter device (4) and vacuum assembly (5), the ultrafiltration membrane filter device (4) includes filter box (6) and ultrafiltration membrane assembly, install the groove (7) for installing ultrafiltration membrane assembly on the filter box (6), the same number of filter core gland (8) for closing the installation groove (7) is detachably connected on the same number of installation groove (7), the filter core gland (8) top is provided with the three -way pipe (9) with filter box (6) inner communication, the three -way pipe (9) is T -shaped setting, the left and right two ends of three -way pipe (9) are provided with ultrafiltration oil outlet pipe (10) and backflush pipe mouth (11) respectively, the three -way pipe (9) is equipped with the ultrafiltration oil outlet solenoid valve (12) of setting close to ultrafiltration oil outlet and the backflush solenoid valve (13) of setting close to backflush pipe mouth (11), the ultrafiltration oil outlet pipe (10) is connected with vacuum assembly (5), the ultrafiltration membrane assembly includes ultrafiltration filter core (14), is provided with the ultrafiltration filter hole (15) of aperture less than 0.2 microns on the ultrafiltration filter core (14); The primary filter tank (1) includes a primary filter body (16), a primary filter closure cover (17), a primary filter oil outlet pipe (18), an oil inlet pipe (19), a filter bag (20), and a filter electromagnetic valve (21). The primary filter closure cover (17) is installed above the primary filter body (16). The filter electromagnetic valve (21) is arranged above the primary filter closure cover (17). The oil inlet pipe (19) and the primary filter oil outlet pipe (18) are installed on the primary filter body (16). An oil inlet solenoid valve (22) is installed on the oil inlet pipe (19). A backflow pipe I (23) is arranged between the oil inlet solenoid valve (22) and the oil inlet pipe (19). The filter bag (20) includes a mounting ring (24) and a filter screen (25). An annular mounting seat (26) is installed on the inner circumferential wall of the primary filter body (16) below the oil inlet pipe (19). A plurality of T-shaped embedded blocks (27) are installed below the mounting ring (24). A plurality of embedded grooves (28) are arranged on the mounting seat (26) in the same number as the embedded blocks (27). A rotating groove (29) is arranged on the side wall in the same direction of the embedded grooves (28). The embedded grooves (28) and the rotating groove (29) are not in communication with the bottom surface of the mounting seat (26). A rubber ring (30) is installed on the mounting seat (26) to abut against the outer circumferential wall of the mounting ring (24). A rotating handle groove (31) is arranged on the inner side wall of the mounting ring (24). The heating tank (2) includes a heating main body tank (32), a heating oil inlet pipe (33), a heating oil outlet pipe (34), and a heating rod (35). The heating oil inlet pipe (33) is connected to the primary filter oil outlet pipe (18) through a oil pump I (36). The heating oil inlet pipe (33) is located at the bottom of the heating main body tank (32). The heating oil outlet pipe (34) is located at the upper part of the heating main body tank (32). The number of heating rods (35) is three. The three heating rods (35) are evenly arranged in the heating main body tank (32). The oil storage tank (3) comprises an oil tank body (37), an oil storage inlet pipe (38), an oil storage outlet pipe (39), a first liquid level controller (40), an air inlet pipe (41) and an air outlet pipe (42), the oil storage inlet pipe (38) is fixedly connected with the heating oil outlet pipe (34), and the air inlet pipe (41) and the air outlet pipe (42) are located at the upper end of the oil tank body (37); The filter box (6) is fixedly connected with a box bottom air outlet pipe (43) and a box top air outlet pipe (44) in communication with the inside, the number of the air inlet pipes (41) is two, the two air inlet pipes (41) are fixedly connected with the box bottom air outlet pipe (43) and the box top air outlet pipe (44) respectively, the filter box (6) is provided with an ultrafiltration inlet pipe (45), the ultrafiltration inlet pipe (45) is fixedly connected with the oil storage outlet pipe (39), the top of the filter box (6) is lower than the position where the oil storage outlet pipe (39) is located, the bottom of the filter box (6) is provided with a reflux pipe two (46) fixedly connected with the reflux pipe one (23), a circulating pump (47) is arranged between the reflux pipe one (23) and the reflux pipe two (46), and a plurality of adsorption nets (48) for adsorbing particles are arranged on the inner circumferential wall of the filter box (6).

2. The negative pressure type high-precision lubricating oil filtering device according to claim 1, characterized in that: A plurality of mounting grooves (7) are arranged close to the side wall of the filter box (6), a plurality of mounting blocks (49) are arranged on the inner circumferential wall of the filter box (6), the adsorption net (48) comprises a fixing frame (50) and an adsorption body (51), the mounting block (49) is provided with a containing cavity (52) for placing the fixing frame (50), a through groove (53) is formed in the inner wall of the containing cavity (52) away from the filter box (6), and a handle groove (54) is formed in the inner side of the fixing frame (50).

3. The negative pressure type high-precision lubricating oil filtering device according to claim 1, characterized in that: The vacuum assembly (5) comprises a vacuum tank body (55), a vacuum tank oil inlet pipe (56), an oil outlet pipe (57), a vacuum pump (58), a vacuum tank air inlet (59) and a vacuum tank air outlet (60), the vacuum tank oil inlet pipe (56) is fixedly connected with the ultrafiltration oil outlet pipe (10) through a vacuum electromagnetic valve (61), the vacuum tank air inlet (59) and the vacuum tank air outlet (60) are arranged at the upper end of the vacuum tank body (55), the vacuum pump (58) is connected with the vacuum air outlet and is provided with an air filter (62), the vacuum tank body (55) is fixedly connected with a second liquid level controller (63), the vacuum tank oil inlet pipe (56) and the vacuum tank body (55) are provided with a vacuum oil inlet tank (64), the vacuum oil inlet tank (64) is provided with a pressure gauge (65), and the oil outlet pipe (57) is provided with a second oil pump (66).

4. The negative pressure type high-precision lubricating oil filtering device according to claim 3, characterized in that: The three-way pipe (9) is provided with a plurality of spray nozzles at the lower end, the plurality of spray nozzles are arranged in a circumferential array around the central axis of the three-way pipe (9), the plurality of spray nozzles are of the same size and all face different directions of the inner circumferential wall of the ultrafiltration filter element (14).

5. The negative pressure type high-precision lubricating oil filtering device according to claim 1, characterized in that: The oil storage tank (3) is provided with a controller, and control lines of the first liquid level controller (40), the second liquid level controller (63), the oil delivery pump one (36), the oil delivery pump two (66), the ultrafiltration oil outlet electromagnetic valve (12), the backflushing electromagnetic valve (13), the filter passing electromagnetic valve (21), the oil inlet electromagnetic valve (22) and the vacuum electromagnetic valve (61) are connected to the controller.

6. The negative pressure type high-precision lubricating oil filtering device according to claim 2, characterized in that: The mounting groove (7) comprises a circular groove (67) and a square groove (68), the length of the square groove (68) is greater than the diameter of the circular groove (67), the square groove (68) is arranged at the middle position of the circular groove (67), and the square groove (68) communicates with the circular groove (67).

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