Hydraulic oil purifying and filling system

Abstract

The utility model relates to the technical field of shield tunneling machines, in particular to a hydraulic oil purifying and filling system which comprises an oil tank, the oil tank is connected with an oil inlet filtering assembly, the oil inlet filtering assembly is communicated with a vacuum separation tank, and hollow cylinders are distributed in the vacuum separation tank. The upper portion of the vacuum separating tank is connected with a water collecting assembly, the bottom of the vacuum separating tank is connected with a return oil filtering assembly, and the return oil filtering assembly is connected with the oil tank. The oil tank is further communicated with a standby oil tank through a pipeline, and the lower portion of the standby oil tank is connected with a filling assembly. According to the hydraulic oil purification device, impurities contained in hydraulic oil can be effectively removed, water in the hydraulic oil can be effectively removed, and the hydraulic oil can be purified and recycled; and meanwhile, hydraulic oil can be stored in a centralized manner and can be conveniently injected into a hydraulic oil tank of the shield tunneling machine.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shield machine technical field, concretely relates to a kind of hydraulic oil purification filling system. BACKGROUND

[0002] Shield machine is a kind of tunnel boring machine using shield method, mainly for railway, highway, subway and water conservancy etc. Tunnel construction of infrastructure project, shield machine can construct tunnel while tunneling "shield" (referring to supporting segment), distinguish from open construction method, shield machine sets light, machine, electricity, liquid, sensing, information technology in one, can efficiently complete tunnel excavation task.

[0003] Shield machine needs to be debugged after assembly, and hydraulic oil is needed when shield machine is debugged, and the main standards for judging whether hydraulic oil is qualified include hydraulic oil kinematic viscosity, hydraulic oil moisture content and impurity content in hydraulic oil. The time of shield machine debugging operation is relatively short compared with the service life of hydraulic oil, and the kinematic viscosity of hydraulic oil is not greatly affected, so the hydraulic oil used for shield machine debugging operation can be recycled, however, the moisture and impurity content in hydraulic oil will inevitably increase when shield machine is debugged, and the prior art has the problems of not removing impurities and moisture in hydraulic oil. At the same time, due to the fixed position of shield machine assembly station, hydraulic oil needs to be transported back and forth in oil drum, the labor intensity of workers is large, and the risk of hydraulic oil pollution is increased. SUMMARY

[0004] The utility model discloses to solve the problem of prior art that it is inconvenient to remove impurities and moisture in hydraulic oil, provide a kind of hydraulic oil purification filling system, the system can effectively remove the impurities contained in hydraulic oil, and effectively remove the moisture in hydraulic oil, to recycle and reuse for hydraulic oil purification;It can also store hydraulic oil centrally and conveniently fill hydraulic oil into shield machine hydraulic oil tank.

[0005] In order to achieve the above purpose, the technical scheme of the utility model is: a kind of hydraulic oil purification filling system, including oil tank, the oil tank is connected with oil inlet filter component, the oil inlet filter component is communicated with vacuum separation tank, and hollow cylinder is arranged in the inside of the vacuum separation tank. The hydraulic oil in oil tank can be delivered to vacuum separation tank by oil inlet filter component, and the hydraulic oil is filtered and heated in the process of delivering hydraulic oil, so that the moisture in the hydraulic oil entering the vacuum separation tank is vaporized into water vapor, and the hydraulic oil entering the vacuum separation tank can be thinned by the action of hollow cylinder.

[0006] The upper part of the vacuum separation tank is connected with a water collecting assembly, and the bottom of the vacuum separation tank is connected with an oil return filtering assembly, which is connected with the oil tank. The water collecting assembly can vacuumize the vacuum separation tank, so that the water in the hydraulic oil is boiled under the action of vacuum to facilitate vaporization, and the steam in the vacuum separation tank can be extracted and the condensed water is collected.

[0007] The oil tank is also connected with a standby oil tank through a pipeline, and the lower part of the standby oil tank is connected with a filling assembly. The purified hydraulic oil in the oil tank can be transported into the standby oil tank for standby, and the purified hydraulic oil in the standby oil tank can be transported into the shield machine hydraulic oil tank through the filling assembly.

[0008] Further, the oil inlet filtering assembly comprises an oil inlet pipeline, a first filter, a second filter and a heater. One end of the oil inlet pipeline is connected with the oil tank, and the other end extends into the vacuum separation tank and is connected with a spraying device. The first filter, the second filter and the heater are sequentially arranged on the oil inlet pipeline in the direction close to the vacuum separation tank, and the heater is electrically connected with a temperature controller. During the transportation of the hydraulic oil in the oil inlet pipeline, the first filter and the second filter can filter the impurities contained in the hydraulic oil in sequence, and the heater can heat the hydraulic oil to facilitate the vaporization of the hydraulic oil into water vapor, which can be uniformly sprayed into the vacuum separation tank through the spraying device.

[0009] Further, an oil inlet ball valve and an electromagnetic ball valve are arranged on the oil inlet pipeline. The oil inlet pipeline is connected with a standby pipeline, both ends of the standby pipeline are located on the two sides of the electromagnetic ball valve and are connected with the oil inlet pipeline, and a hand valve one is arranged on the standby pipeline. The oil inlet pipeline is also connected with an oil inlet detection pipeline, and an oil inlet detection ball valve is arranged on the oil inlet detection pipeline. When the electromagnetic ball valve is damaged and the oil inlet pipeline is closed, the hydraulic oil can be continuously transported through the standby pipeline. Through the action of the oil inlet detection pipeline and the oil inlet detection ball valve, the hydraulic oil transported into the vacuum separation tank can be sampled, so that the impurities and water contained in the filtered hydraulic oil transported into the vacuum separation tank can be detected.

[0010] Further, the water collecting assembly comprises a water storage tank one, a condenser, a water storage tank two and a vacuum pump. The water storage tank one is connected with the upper part of the vacuum separation tank through a pipeline. The upper part of the water storage tank one is connected with a steam pipeline, and the steam pipeline is connected with the water storage tank two. The condenser is arranged on the steam pipeline, and the suction end of the vacuum pump is connected with a suction pipeline, and the suction pipeline is connected with the upper part of the water storage tank two. The water storage tank one and the water storage tank two both collect water, and the condenser is used to cool the steam extracted from the vacuum separation tank to cool the gaseous water vapor into liquid.

[0011] Further, the bottom of the water storage tank one is communicated with a drain pipeline one, the drain pipeline one is provided with a manual valve two; the bottom of the water storage tank two is communicated with a drain pipeline two, the drain pipeline two is provided with a manual valve three, and the upper portion of the water storage tank two is provided with a liquid level sensor two. The water collected by the water storage tank one is conveniently drained through the drain pipeline one, the water collected by the water storage tank two is conveniently drained through the drain pipeline two, and the liquid level sensor two can detect the water level of the water storage tank two.

[0012] Further, the oil return filter assembly comprises an oil outlet pipeline, a gear pump and a three-stage filter, one end of the oil outlet pipeline is connected to the bottom of the vacuum separation tank and is communicated with the vacuum separation tank, the other end of the oil outlet pipeline is communicated with an oil return pipeline and an oil outlet detection pipeline, the gear pump and the three-stage filter are both arranged on the oil outlet pipeline, and a one-way valve is further arranged on the oil outlet pipeline, an oil return ball valve is arranged on the oil outlet pipeline, and an oil outlet ball valve is arranged on the oil outlet detection pipeline. The hydraulic oil in the vacuum separation tank can be pumped into the oil tank through the oil outlet pipeline and the oil return pipeline by the gear pump, and the three-stage filter can filter the purified hydraulic oil again; and the purified hydraulic oil is conveniently sampled through the oil outlet detection pipeline and the oil outlet ball valve, so that the impurities and moisture contained in the hydraulic oil returned to the oil tank can be conveniently detected.

[0013] Further, the top of the vacuum separation tank is provided with a vacuum gauge and a pressure gauge, the upper portion of the vacuum separation tank is provided with a temperature gauge, a mechanical liquid level switch and a liquid level sensor one, the middle portion of the vacuum separation tank is provided with a liquid level gauge, and the lower portion of the vacuum separation tank is provided with a liquid level switch; the bottom of the vacuum separation tank is further communicated with an oil discharge pipeline, and the oil discharge pipeline is provided with a manual ball valve. The vacuum gauge can detect the vacuum degree of the gas in the vacuum separation tank, the pressure gauge can detect the pressure in the vacuum separation tank, and the liquid level sensor one, the liquid level gauge and the liquid level switch can detect the liquid level of the hydraulic oil in the vacuum separation tank.

[0014] Further, the oil tank is communicated with an oil conveying pipeline, the other end of the oil conveying pipeline is communicated with a standby oil tank, and a butterfly valve is arranged on the oil conveying pipeline. The purified hydraulic oil in the oil tank can be conveyed into the standby oil tank through the oil conveying pipeline.

[0015] Further, the oil filling assembly comprises an oil filling pipeline, an oil filling pump and an oil filling filter element, one end of the oil filling pipeline is communicated with the standby oil tank, and the oil filling pump and the oil filling filter element are both arranged on the oil filling pipeline, and an oil filling ball valve is further arranged on the oil filling pipeline. The hydraulic oil in the standby oil tank can be conveyed into the shield machine hydraulic oil tank through the oil filling pipeline by the oil filling pump, and the oil filling filter element can further filter the hydraulic oil.

[0016] Through the above technical scheme, the utility model has the advantages that:

[0017] The utility model discloses rational structure, good use effect can effectively remove the impurity contained in hydraulic oil, and effectively separate the moisture in hydraulic oil, realize the effect of recycling and repeatedly using to hydraulic oil purification, can also store and conveniently fill hydraulic oil to shield machine hydraulic oil tank in the hydraulic oil of centralized storage, need not store the hydraulic oil in the oil drum and carry back and forth, can reduce the occupation area of site, reduce the labor intensity of staff, can also reduce the risk of hydraulic oil being contaminated.

[0018] The utility model discloses through oil tank and spare oil tank to the centralized storage of hydraulic oil, can through pipeline and deliver the hydraulic oil of shield machine debugging operation to oil tank, through filling assembly can deliver the hydraulic oil after purification in spare oil tank to shield machine hydraulic oil tank, to make the use of shield machine debugging operation, realize the effect of storing and conveniently filling hydraulic oil to shield machine hydraulic oil tank to the centralized storage of hydraulic oil, also realized the effect of recycling and repeatedly using to hydraulic oil, wherein the oil filter element of filling assembly can further remove the impurity in hydraulic oil.

[0019] The utility model discloses through water collecting component vacuum pump can carry out vacuumizing to vacuum separation tank, to make the hydraulic oil in oil tank deliver to vacuum separation tank through oil inlet filter component, the first filter and second filter can filter hydraulic oil in turn in the delivery process of hydraulic oil in oil inlet pipeline, filter the impurity contained in hydraulic oil, realize the effect of removing the impurity contained in hydraulic oil, and the heater plays the role of heating to the hydraulic oil to facilitate the vaporization of hydraulic oil into water vapor, and the hydraulic oil can be evenly sprayed in vacuum separation tank through the action of spraying device, to make the water content in hydraulic oil vaporize to a greater extent in vacuum separation tank.

[0020] The water collecting component vacuum pump of the utility model carries out vacuumizing to vacuum separation tank, and when the hydraulic oil is delivered to vacuum separation tank, the water content in the hydraulic oil can also be reduced in the boiling point under the action of vacuum, and the steam in vacuum separation tank can be extracted and condensed water is collected, wherein the water vapor is delivered to water storage tank one through pipeline, part of the water vapor is condensed into liquid water and is collected by water storage tank one, the remaining water vapor is delivered to water storage tank two through steam pipeline, and the water vapor delivered to water storage tank two is cooled by the condenser, to cool the gaseous water vapor into liquid, and then be collected by water storage tank two, to realize the effect of separating the water content in hydraulic oil. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of the utility model discloses a kind of hydraulic oil purification filling system.

[0022] The attached diagram is labeled as follows: 1. Oil tank; 2. Oil inlet pipe; 3. Oil inlet ball valve; 4. Primary filter; 5. Secondary filter; 6. Solenoid ball valve; 7. Heater; 8. Temperature controller; 9. Backup pipe; 10. Manual valve one; 11. Oil inlet detection pipe; 12. Oil inlet detection ball valve; 13. Spray device; 14. Vacuum separator; 15. Vacuum gauge; 16. Pressure gauge; 17. Temperature gauge; 18. Mechanical level switch; 19. Level sensor one; 20. Level gauge; 21. Level switch; 22. Oil drain pipe; 23. Manual ball valve; 24. 25 is water storage tank 1, 26 is manual valve 2, 27 is steam pipe, 28 is condenser, 29 is liquid level sensor 2, 30 is manual valve 3, 31 is air extraction pipe, 32 is vacuum pump, 33 is oil outlet pipe, 34 is gear pump, 35 is check valve, 36 is three-stage filter, 37 is return oil pipe, 38 is return oil ball valve, 39 is oil outlet detection pipe, 40 is oil outlet ball valve, 41 is oil delivery pipe, 42 is butterfly valve, 43 is spare oil tank, 44 is refueling pipe, 45 is refueling ball valve, 46 is refueling pump, and 47 is refueling filter element. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0024] like Figure 1 As shown, a hydraulic oil purification and filling system includes an oil tank 1, which is connected to an inlet filter assembly. The inlet filter assembly is connected to a vacuum separator 14, the interior of which is arranged with hollow cylinders. In this embodiment, the oil tank 1 is connected to a hydraulic oil pipeline. Through the hydraulic oil pipeline and under the action of a pump, hydraulic oil used for the commissioning and operation of the tunnel boring machine can be transported to the oil tank 1 for collection, so as to remove moisture and impurities contained in the hydraulic oil. The vacuum separator 14 contains multiple hollow cylinders, which are columnar structures with hollow interiors and open ends. The hollow cylinders are made of 1Cr18Ni9 material. The hollow cylinders can spread the hydraulic oil using the fluidity of the hydraulic oil, so that the hydraulic oil can vaporize its moisture to a greater extent in the vacuum separator 14. The hydraulic oil is transported to the vacuum separator 14 through the inlet filter assembly, which can filter impurities and heat the hydraulic oil.

[0025] The upper part of the vacuum knockout drum 14 is connected with a water collecting assembly, and the bottom part of the vacuum knockout drum 14 is connected with an oil return filtering assembly which is connected with the oil tank 1. In the embodiment, the water collecting assembly plays a role of vacuumizing the vacuum knockout drum 14, so that the hydraulic oil in the oil tank 1 can be conveniently fed into the vacuum knockout drum through the oil inlet filtering assembly, and the water collecting assembly can also condense and collect the separated water vapor; the oil return filtering assembly can feed the purified hydraulic oil back into the oil tank 1 to form a hydraulic oil circulation.

[0026] The oil tank 1 is also connected with a standby oil tank 43 through a pipeline, and the lower part of the standby oil tank 43 is connected with a filling assembly. In the embodiment, the standby oil tank 43 also plays a role of storing the hydraulic oil, and the purified hydraulic oil in the oil tank 1 can be fed into the standby oil tank 43 through the pipeline for storage, and the filling assembly can feed the purified hydraulic oil in the standby oil tank 43 into the hydraulic oil tank of the shield tunneling machine for use when the shield tunneling machine is debugged and operated.

[0027] The oil inlet filtering assembly comprises an oil inlet pipeline 2, a primary filter 4, a secondary filter 5 and a heater 7. One end of the oil inlet pipeline 2 is connected with the oil tank 1, and the other end extends into the vacuum knockout drum 14 and is connected with a spraying device 13. The primary filter 4, the secondary filter 5 and the heater 7 are sequentially arranged on the oil inlet pipeline 2 in a direction close to the vacuum knockout drum 14, and the heater 7 is electrically connected with a temperature controller 8. In the embodiment, the hydraulic oil in the oil tank 1 is fed into the vacuum knockout drum 14 through the oil inlet pipeline 2, and sequentially passes through the primary filter 4, the secondary filter 5 and the heater 7 during the feeding process. The primary filter 4 and the secondary filter 5 sequentially filter the impurities in the hydraulic oil, and then the heater 7 heats the oil temperature of the hydraulic oil to 60℃. The temperature controller 8 can control the oil temperature of the hydraulic oil heated by the heater 7, and the heater 7 is provided with a temperature sensor and a temperature table. The spraying device comprises a plurality of spraying pipes connected with the oil inlet pipeline 2, and a plurality of spraying heads are arranged on the spraying pipes to uniformly spray the hydraulic oil into the vacuum knockout drum 14.

[0028] The oil inlet pipeline 2 is further provided with an oil inlet ball valve 3 and an electromagnetic ball valve 6, and is communicated with a standby pipeline 9, both ends of the standby pipeline 9 are located on both sides of the electromagnetic ball valve 6 and are communicated with the oil inlet pipeline 2, and the standby pipeline 9 is provided with a hand valve one 10; the oil inlet pipeline 2 is further communicated with an oil inlet detection pipeline 11, and the oil inlet detection pipeline 11 is provided with an oil inlet detection ball valve 12. In the embodiment, the oil inlet ball valve 3 and the electromagnetic ball valve 6 play a role in opening and closing the oil inlet pipeline 2, and the electromagnetic ball valve 6 is in a normally open state, when the electromagnetic ball valve 6 is damaged and closes the oil inlet pipeline 2, the hydraulic oil can be transported into the oil inlet pipeline 2 through the standby pipeline 9 by opening the hand valve one 10, so that the hydraulic oil is transported across the electromagnetic ball valve 6; the oil inlet detection ball valve 12 plays a role in opening and closing the oil inlet detection pipeline 11, and opening the oil inlet detection ball valve 12 can sample the filtered hydraulic oil.

[0029] The water collecting assembly includes a water storage tank one 24, a condenser 27, a water storage tank two 28 and a vacuum pump 32, the water storage tank one 24 is communicated with the upper part of the vacuum separation tank 14 through a pipeline, the upper part of the water storage tank one 24 is communicated with a steam pipeline 26, the steam pipeline 26 is communicated with the water storage tank two 28, the condenser 27 is arranged on the steam pipeline 26, and the air inlet end of the vacuum pump 32 is communicated with a suction pipeline 31, and the suction pipeline 31 is communicated with the upper part of the water storage tank two 28. In the embodiment, the vacuum pump 32 is used for vacuumizing the vacuum separation tank 14, the inside of the vacuum separation tank 14 is in a vacuum state, the hydraulic oil in the oil tank 1 can be transported into the inside of the vacuum separation tank 14 through the oil inlet pipeline 2, and the moisture in the hydraulic oil is boiled at a reduced boiling point under the action of the vacuum, the moisture in the hydraulic oil is vaporized into water vapor at a temperature of 60 DEG C, and the water vapor in the vacuum separation tank 14 is introduced into the water storage tank one 24 through a pipeline while the vacuum pump 32 is vacuumizing the vacuum separation tank 14, part of the water vapor is condensed into water and collected by the water storage tank one 24 during the transportation process, and then the water vapor is transported into the water storage tank two 28 through the steam pipeline 26, and the condenser 27 is used for cooling the water vapor, so that the gaseous water vapor is cooled into liquid water and flows into the water storage tank two 28 to be collected, and the condenser 27 adopts an industrial fan and uses the industrial fan to cool the water vapor.

[0030] The bottom of the water storage tank 24 is communicated with a drain pipeline 1, and a manual valve 2 is arranged on the drain pipeline 1; the bottom of the water storage tank 2 is communicated with a drain pipeline 2, and a manual valve 3 is arranged on the drain pipeline 2; and the upper part of the water storage tank 2 is provided with a liquid level sensor 2. In the embodiment, the manual valve 2 is used to open and close the drain pipeline 1, and opening the manual valve 2 can make the water in the water storage tank 1 drain through the drain pipeline 1; the manual valve 3 is used to open and close the drain pipeline 2, and opening the manual valve 3 can make the water in the water storage tank 2 drain through the drain pipeline 2; and the liquid level sensor 2 is used to detect the liquid level in the water storage tank 2, and when the liquid level sensor 2 detects the liquid level of the water in the water storage tank 2, the manual valve 3 is opened to make the water in the water storage tank 2 drain.

[0031] The oil return filter assembly comprises an oil outlet pipeline 33, a gear pump 34 and a three-stage filter 36, one end of the oil outlet pipeline 33 is connected to the bottom of the vacuum separation tank 14 and communicated with the vacuum separation tank 14, the other end of the oil outlet pipeline 33 is communicated with an oil return pipeline 37 and an oil outlet detection pipeline 39; the gear pump 34 and the three-stage filter 36 are arranged on the oil outlet pipeline 33, and a one-way valve 35 is further arranged on the oil outlet pipeline 33; an oil return ball valve 38 is arranged on the oil return pipeline 37, and an oil outlet ball valve 40 is arranged on the oil outlet detection pipeline 39. In the embodiment, under the action of the gear pump 34, the purified hydraulic oil in the vacuum separation tank 14 can be conveyed to the oil tank 1 through the oil outlet pipeline 33 and the oil return pipeline 37, and the three-stage filter 36 filters the hydraulic oil again during the conveying process of the purified hydraulic oil in the oil outlet pipeline 33, the one-way valve 35 can prevent the hydraulic oil from flowing back in the oil outlet pipeline 33, and the oil return ball valve 38 is used to open and close the oil return pipeline 37; the oil outlet ball valve 40 is used to open and close the oil outlet detection pipeline 39, and opening the oil outlet ball valve 40 can sample the purified hydraulic oil.

[0032] The top of the vacuum separation tank 14 is provided with a vacuum gauge 15 and a pressure gauge 16, the upper part of the vacuum separation tank 14 is provided with a temperature gauge 17, a mechanical liquid level switch 18 and a liquid level sensor 1 19, the middle part of the vacuum separation tank 14 is provided with a liquid level gauge 20, and the lower part of the vacuum separation tank 14 is provided with a liquid level switch 21; the bottom of the vacuum separation tank 14 is further communicated with an oil drain pipeline 22, and a manual ball valve 23 is arranged on the oil drain pipeline 22. In the embodiment, the vacuum gauge 15 can detect the vacuum degree of the gas in the vacuum separation tank 14, the pressure gauge 16 can detect the pressure in the vacuum separation tank 14, the temperature gauge 17 can detect the temperature in the vacuum separation tank 14, and the liquid level sensor 1 19, the liquid level gauge 20 and the liquid level switch 21 can detect the liquid level of the hydraulic oil in the vacuum separation tank 14. Through the action of the oil drain pipeline 22 and the manual ball valve 23, the oil in the vacuum separation tank 14 can be drained to clean the vacuum separation tank 14.

[0033] In this embodiment, the mechanical hydraulic switch 18, the thermometer 17, the liquid level switch 21, the oil inlet ball valve 3, the temperature controller 8, the gear pump 34, the oil return ball valve 38, the liquid level sensor two 29 and the vacuum pump 32 are electrically connected with the PLC controller; wherein when the liquid level sensor one 19 detects the hydraulic oil in the vacuum separation tank 14, the mechanical hydraulic switch 18 feeds back the signal to the PLC controller, the PLC controller controls the oil inlet ball valve 3 and the vacuum pump 32 to be closed, and the heater 7 is also interlocked to be closed; when the thermometer 17 detects that the temperature inside the vacuum separation tank 14 reaches 65℃, the signal is fed back to the PLC controller, and the heater is also interlocked to be closed; when the hydraulic oil liquid level inside the vacuum separation tank 14 reaches the liquid level switch 21, the PLC controller controls the gear pump 34 to be closed to prevent the gear pump 34 from being sucked; when the liquid level sensor two 29 detects the liquid level of the water in the water storage tank two 29, the signal is fed back to the PLC controller, at this time, the manual valve three 30 needs to be opened to make the water in the water storage tank two 28 discharged through the water drainage pipeline two, and if the water is not discharged for 5 minutes, the PLC controller controls the vacuum pump 32 to be closed.

[0034] The oil tank 1 is communicated with an oil conveying pipeline 41, another end of the oil conveying pipeline 41 is communicated with a standby oil tank 43, and a butterfly valve 42 is arranged on the oil conveying pipeline 41. In this embodiment, when the hydraulic oil in the oil tank 1 is purified, the butterfly valve 43 can be opened, so that the hydraulic oil in the oil tank 1 is conveyed to the standby oil tank 43 through the conveying pipeline 41, so as to perform the hydraulic oil filling work, and meanwhile, the next hydraulic oil purification work is facilitated.

[0035] The filling assembly comprises an oil filling pipeline 44, an oil filling pump 46 and an oil filling filter element 47, one end of the oil filling pipeline 44 is communicated with the standby oil tank 43, the oil filling pump 46 and the oil filling filter element 47 are arranged on the oil filling pipeline 44, and an oil filling ball valve 45 is further arranged on the oil filling pipeline 44. In this embodiment, the oil filling ball valve 45 plays a role of opening and closing the oil filling pipeline 44, and under the action of the oil filling pump 46, the purified hydraulic oil in the standby oil tank 43 can be pumped into the shield machine hydraulic oil tank through the oil filling pipeline 44, so as to be used when the shield machine is debugged and operated, and the oil filling filter element 47 can filter the hydraulic oil again in the conveying process of the purified hydraulic oil in the oil filling pipeline 44, so as to effectively remove the impurities in the hydraulic oil.

[0036] The working principle of the utility model is as follows: shield machine debugging operation hydraulic oil is transported to oil tank 1 through pipeline, when purifying the hydraulic oil in oil tank 1, removing the impurities and moisture in the hydraulic oil, opening vacuum pump 32, vacuum pump 32 carries out vacuumizing to vacuum separation tank 14 through the pipeline between steam pipeline 26 and water storage tank one 24 and the pipeline between suction pipeline 31 and vacuum separation tank 14, so that the inside of vacuum separation tank 14 is in vacuum state, under the action of vacuum state in vacuum separation tank 14, the hydraulic oil in oil tank 1 is transported to vacuum separation tank 14 through oil inlet pipeline 2, and the hydraulic oil is sequentially filtered through primary filter 4, secondary filter 5 and heater 7, and then the oil temperature of the hydraulic oil is heated to 60 DEG C by heater 7.

[0037] The hydraulic oil is evenly sprayed to the inside of vacuum separation tank 14 through the spraying device, and the hollow cylinder thins the hydraulic oil, so that the water contained in the hydraulic oil can be vaporized to a greater extent in vacuum separation tank 14, after the hydraulic oil enters vacuum separation tank 14, the boiling point of the water in the hydraulic oil is lowered under the action of vacuum, and the water in the hydraulic oil is vaporized into water vapor at 60 DEG C; and while vacuum pump 32 is vacuumizing vacuum separation tank 14, the water vapor in vacuum separation tank 14 enters water storage tank one 24 through the pipeline, part of the water vapor is condensed into water in the conveying process and is collected by water storage tank one 24, and then the water vapor is transported to water storage tank two 28 through steam pipeline 26, the water vapor is cooled by condenser 27, the gaseous water vapor is cooled into liquid water, and flows into water storage tank two 28 to be collected, achieving the purpose of separating the water in the hydraulic oil.

[0038] When the hydraulic oil level in vacuum separation tank 14 exceeds hydraulic switch 21, the PLC controller controls gear pump 34 to start working, and gear pump 34 transports the purified hydraulic oil in vacuum separation tank 14 to oil tank 1 through oil outlet pipeline 33 and oil return pipeline 37, wherein the hydraulic oil is filtered again by tertiary filter 36.

[0039] When the liquid level sensor 19 detects the hydraulic oil in the vacuum separation tank 14, the mechanical hydraulic switch 18 feeds back a signal to the PLC controller, which controls the oil inlet ball valve 3 and the vacuum pump 32 to be closed, and the heater 7 is also interlocked to be closed; When the temperature table 17 detects that the temperature inside the vacuum separation tank 14 reaches 65℃, it will feed back a signal to the PLC controller, and the heater is also interlocked to be closed; When the hydraulic oil liquid level inside the vacuum separation tank 14 reaches the liquid level switch 21, the PLC controller controls the gear pump 34 to be closed to prevent the gear pump 34 from being empty, and when the hydraulic oil liquid level inside the vacuum separation tank 14 exceeds the hydraulic switch 21 again, the gear pump 34 restarts work; When the liquid level sensor 29 detects the liquid level of the water in the water storage tank 29, it will feed back a signal to the PLC controller, at which time the manual valve 30 needs to be opened to make the water in the water storage tank 28 discharge through the drain pipe 2, and if the water is not discharged for 5 minutes, the PLC controller controls the vacuum pump 32 to be closed.

[0040] When the hydraulic oil in the oil tank 1 is purified, the butterfly valve 43 is opened, and the hydraulic oil in the oil tank 1 is transported to the standby oil tank 43 through the conveying pipeline 41. After the hydraulic oil in the oil tank 1 is completely transported to the standby oil tank 43, the next hydraulic oil purification work cycle can be carried out. When the shield machine needs hydraulic oil during debugging and operation, the oil filling ball valve 45 and the oil filling pump 46 are opened, and the oil filling pump 46 pumps the hydraulic oil in the standby oil tank 43 into the shield machine hydraulic oil tank through the oil filling pipeline 44, and the oil filling filter element 47 filters the hydraulic oil during the conveying process.

[0041] The above-described embodiments are only preferred embodiments of the utility model, and do not limit the scope of the utility model, so that equivalent changes or modifications made according to the technical solutions described in the utility model patent range should be included in the utility model application patent range.

Claims

1. A hydraulic oil purifying and filling system comprising a tank (1), characterized in that, The oil tank (1) is connected with an oil inlet filtering assembly, the oil inlet filtering assembly is communicated with a vacuum separation tank (14), a hollow cylinder is arranged in the vacuum separation tank (14); The upper portion of the vacuum separation tank (14) is connected with a water collecting assembly, and the bottom of the vacuum separation tank (14) is connected with an oil return filtering assembly connected with the oil tank (1); The oil tank (1) is also communicated with a standby oil tank (43) through a pipeline, and the lower portion of the standby oil tank (43) is connected with a filling assembly.

2. A hydraulic fluid purifying and filling system according to claim 1, wherein The oil inlet filtering assembly comprises an oil inlet pipeline (2), a first filter (4), a second filter (5) and a heater (7), one end of the oil inlet pipeline (2) is communicated with the oil tank (1), the other end extends into the vacuum separation tank (14) and is connected with a spraying device (13), the first filter (4), the second filter (5) and the heater (7) are sequentially arranged on the oil inlet pipeline (2) in the direction close to the vacuum separation tank (14), and the heater (7) is electrically connected with a temperature controller (8).

3. The hydraulic fluid purifying and refilling system according to claim 2, wherein An oil inlet ball valve (3) and an electromagnetic ball valve (6) are further arranged on the oil inlet pipeline (2), the oil inlet pipeline (2) is communicated with a standby pipeline (9), both ends of the standby pipeline (9) are located on the two sides of the electromagnetic ball valve (6) and are communicated with the oil inlet pipeline (2), and a hand valve one (10) is arranged on the standby pipeline (9); the oil inlet pipeline (2) is also communicated with an oil inlet detection pipeline (11), and an oil inlet detection ball valve (12) is arranged on the oil inlet detection pipeline (11).

4. The hydraulic fluid purifying and refilling system according to claim 1, wherein The water collecting assembly comprises a water storage tank one (24), a condenser (27), a water storage tank two (28) and a vacuum pump (32), the water storage tank one (24) is communicated with the upper portion of the vacuum separation tank (14) through a pipeline, the upper portion of the water storage tank one (24) is communicated with a steam pipeline (26), the steam pipeline (26) is communicated with the water storage tank two (28), the condenser (27) is arranged on the steam pipeline (26), and the air inlet end of the vacuum pump (32) is communicated with a gas suction pipeline (31), and the gas suction pipeline (31) is communicated with the upper portion of the water storage tank two (28).

5. The hydraulic fluid purifying and refilling system according to claim 4, wherein The bottom of the water storage tank one (24) is communicated with a drainage pipeline one, the drainage pipeline one is provided with a hand valve two (25), the bottom of the water storage tank two (28) is communicated with a drainage pipeline two, the drainage pipeline two is provided with a hand valve three (30), and the upper portion of the water storage tank two (28) is provided with a liquid level sensor two (29).

6. The hydraulic fluid purifying and refilling system according to claim 1, wherein The oil return filter assembly comprises an oil outlet pipeline (33), a gear pump (34) and a three-stage filter (36), one end of the oil outlet pipeline (33) is connected to the bottom of the vacuum separation tank (14) and communicates with the vacuum separation tank (14), the other end of the oil outlet pipeline (33) is communicated with an oil return pipeline (37) and an oil outlet detection pipeline (39); the gear pump (34) and the three-stage filter (36) are both arranged on the oil outlet pipeline (33), and a one-way valve (35) is further arranged on the oil outlet pipeline (33); an oil return ball valve (38) is arranged on the oil return pipeline (37), and an oil outlet ball valve (40) is arranged on the oil outlet detection pipeline (39).

7. The hydraulic fluid purifying and refilling system according to claim 1, wherein A vacuum gauge (15) and a pressure gauge (16) are arranged on the top of the vacuum separation tank (14), a temperature gauge (17), a mechanical liquid level switch (18) and a liquid level sensor (19) are arranged on the upper portion of the vacuum separation tank (14), a liquid level meter (20) is arranged on the middle portion of the vacuum separation tank (14), and a liquid level switch (21) is arranged on the lower portion of the vacuum separation tank (14); a drain pipeline (22) is further communicated with the bottom of the vacuum separation tank (14), and a manual ball valve (23) is arranged on the drain pipeline (22).

8. The hydraulic fluid purifying and refilling system according to claim 1, wherein The oil tank (1) is communicated with an oil conveying pipeline (41), the other end of the oil conveying pipeline (41) communicates with a standby oil tank (43), and a butterfly valve (42) is arranged on the oil conveying pipeline (41).

9. The hydraulic fluid purifying and refilling system according to claim 8, wherein The oil filling assembly comprises an oil filling pipeline (44), an oil filling pump (46) and an oil filling filter element (47), one end of the oil filling pipeline (44) communicates with the standby oil tank (43), the oil filling pump (46) and the oil filling filter element (47) are both arranged on the oil filling pipeline (44), and an oil filling ball valve (45) is further arranged on the oil filling pipeline (44).

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