Hydraulic oil way system cleaning device

Abstract

The utility model particularly relates to a hydraulic oil way system cleaning device which comprises a dosing stirring tank with an adding opening for adding acid-base cleaning agents, a liquid inlet of the dosing stirring tank is connected with a water source, and an outlet of the dosing stirring tank is connected with an electromagnetic pulse cleaning machine. The electromagnetic pulse cleaning machine is further provided with a water outlet and a water return port which are connected with a pipeline to be cleaned, a sewage outlet for discharging sewage, a water inlet for supplementing water and a gas inlet for receiving compressed gas. The drain outlet is connected with a waste water tank, the water inlet is connected with a water source, the air inlet is connected with an air source, and the air source can provide heated compressed air. According to the utility model, the problem of high pipeline maintenance cost in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil circuit cleaning, in particular to a hydraulic oil circuit system cleaning device. Background Art

[0002] The hydraulic transmission system is an engineering technology that uses liquid as the working medium to transfer and control energy. It is a control and transmission method frequently used in industry and is flexible and convenient.

[0003] The hydraulic oil circuit is an important part of the hydraulic system, which is composed of oil pipes, oil pumps, oil tanks, valves, filters, etc.

[0004] Hydraulic oil pipes include copper pipes, steel pipes, rubber hoses, nylon pipes, plastic pipes and other types. These pipes have different characteristics and applicable environments. In the design and use of hydraulic systems, it is necessary to select the appropriate type of pipe according to the specific application scenario. For example, rubber hoses have good wear resistance and corrosion resistance, but rubber hoses have poor high temperature resistance. Steel pipes have the characteristics of high strength and resistance to high temperature and high pressure, but steel pipes have poor corrosion resistance. After the steel pipe has been used for a long time, the inner wall of the steel pipe will produce rust due to corrosion. After the rust peels off, it will flow with the hydraulic oil, which will have many adverse effects on the operation of the entire hydraulic oil circuit system and cause safety hazards.

[0005] In the prior art, a common solution is to replace the oil and the oil pipe. However, the longer the hydraulic oil pipe is, the greater the equipment cost for replacing the oil pipe. The longer the hydraulic oil pipe is, the more hydraulic oil will be stored inside the pipe, so the cost of replacing the oil is also greater.

[0006] In order to solve the above problems, people have been seeking an ideal technical solution. Utility Model Content

[0007] The utility model aims to solve the deficiencies of the prior art and thus provide a hydraulic oil circuit system cleaning device which can remove rust from the inner wall of a hydraulic oil circuit pipeline and reduce the corrosion rate of the pipeline.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0009] A hydraulic oil circuit system cleaning device, comprising a dosing stirring tank with an addition port for adding acidic and alkaline cleaning agents, the liquid inlet of the dosing stirring tank is connected to a water source, the outlet of the dosing stirring tank is connected to an electromagnetic pulse cleaning machine, and the electromagnetic pulse cleaning machine also has a water outlet and a water return port connected to a pipeline to be cleaned, a sewage outlet for discharging sewage, a water inlet for replenishing water, and an air inlet for receiving compressed gas;

[0010] The sewage outlet is connected to a wastewater tank, the water inlet is connected to a water source, and the air inlet is connected to an air source, and the air source can provide heated compressed gas;

[0011] The electromagnetic pulse cleaning machine has a built-in water tank and an air pipeline. The water inlet, water outlet, water return port and sewage outlet are all connected to the water tank. The air pipeline is connected to the air inlet and the pipeline to be cleaned through a control valve.

[0012] Based on the above, the outlet end of the waste water tank is connected to the waste liquid neutralization and external transportation device through a valve.

[0013] Based on the above, the gas source includes a main gas pipeline and a backup gas pipeline, and the main gas pipeline and the backup gas pipeline can be switchably connected to the air inlet of the electromagnetic pulse cleaning machine.

[0014] Based on the above, the gas source includes an air compressor, a gas tank and a heater, the air compressor is used to generate compressed gas, the gas tank is used to temporarily store compressed gas, and the heater is connected to the outlet end of the gas tank to heat the compressed gas.

[0015] Based on the above, the end of the pipeline to be cleaned is connected to the oil tank.

[0016] Based on the above, it also includes a three-way pipe, the three-way pipe has a first interface, a second interface and a third interface, the first interface is an air inlet interface, the second interface is connected to the pipeline to be observed, a partition is arranged in the third interface along the radial direction of the third interface, a through hole is arranged in the middle of the partition, a rope is passed through the through hole, a lightweight sphere is arranged on the end of the rope close to the second interface, the end of the rope away from the second interface is wound on a rotating wheel, the rotating wheel is located on the side of the partition away from the second interface and is rotatably installed on the inner wall of the third interface, an end cover is installed on the third interface, and the end cover blocks the third interface; the first interface is used to connect to the air inlet of the electromagnetic pulse cleaning machine, the second interface is used to connect to the pipeline to be cleaned, the lightweight sphere is used to install an endoscope, and the first interface is exposed as an operating port.

[0017] Based on the above, the end cover is assembled and connected with the third interface via a quick-release structure.

[0018] Based on the above, a filter is arranged between the water return port of the electromagnetic pulse cleaning machine and the pipeline to be cleaned.

[0019] Based on the above, the gas source is air or nitrogen.

[0020] Compared with the prior art, the utility model has outstanding substantive features and significant progress. Specifically, the utility model has the following advantages:

[0021] The hydraulic oil circuit system cleaning device of the utility model can realize multiple composite cleaning methods such as alkali washing and degreasing, desalination flushing, acid washing and compressed air blowing based on electromagnetic pulse cleaning machine on pipelines and hydraulic oil tanks, so as to clean impurities and rust from pipelines and oil tanks and prevent pipeline blockage from affecting the use of hydraulic oil circuits.

[0022] By setting up sewage treatment equipment, the pollution to the environment can be reduced.

[0023] The provided sphere and endoscope are used to inspect the inside of the pipe after cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of a hydraulic oil circuit system cleaning device according to an embodiment of the utility model, including pipelines.

[0025] Figure 2 The utility model is a schematic diagram of a hydraulic oil circuit system cleaning device according to an embodiment of the utility model, which includes a pipeline and an oil tank.

[0026] Figure 3 The utility model is a schematic diagram of a hydraulic oil circuit system cleaning device according to an embodiment of the utility model, which includes a three-way pipe, a rotating wheel, a sphere, a rope, an end cover and the like.

[0027] In the figure:

[0028] 11. Pipeline; 12. Fuel tank;

[0029] 21. Dosing and mixing tank; 22. Electromagnetic pulse cleaning machine; 23. Wastewater tank; 24. Water source; 25. Gas storage tank; 26. Air compressor; 27. Heater; 28. Waste liquid neutralization and transportation device;

[0030] 31. Rotating wheel; 32. Rope; 33. Sphere; 34. End cover; 35. Tee; 36. First interface; 37. Second interface; 38. Third interface; 39. Partition. DETAILED DESCRIPTION

[0031] Combine the following Figures 1 to 3 The technical solution of the utility model is further described in detail through specific implementation methods.

[0032] A hydraulic oil system cleaning device includes a dosing stirring tank 21 having an addition port for adding acidic and alkaline cleaning agents, the liquid inlet of the dosing stirring tank 21 is connected to a water source 24, the water source 24 is a water storage tank or a water pipe, etc., and the water source 24 can provide industrial soft water. The outlet of the dosing stirring tank 21 is connected to an electromagnetic pulse cleaning machine 22, preferably, the electromagnetic pulse cleaning machine 22 uses the SWM series electromagnetic pulse cleaning machine 22 of Zhengzhou Saiwei Electromechanical Equipment Co., Ltd.

[0033] The electromagnetic pulse cleaning machine 22 also has a water outlet and a water return port connected to the pipeline 11 to be cleaned, as well as a sewage outlet for discharging sewage, a water inlet for replenishing water, and an air inlet for receiving compressed gas.

[0034] The sewage outlet is connected to a wastewater tank 23, the outlet of the wastewater tank 23 is connected to a waste liquid neutralization and transport device 28, the water in the wastewater tank 23 is neutralized and then discharged into the waste liquid neutralization and transport device 28, the water inlet is connected to a water source 24, the air inlet is connected to an air source, and the air source can provide heated compressed gas. The air source is an air tank 25 or an air bag with an exhaust port and a heater 27, and an air compressor 26 is set at the air tank 25 and the air bag air inlet.

[0035] The hydraulic oil circuit system cleaning device also includes a three-way pipe 35, which has a first interface 36, a second interface 37 and a third interface 38. The first interface 36 is an air inlet interface, and the second interface 37 is connected to the pipeline to be observed 11 of the oil circuit system. A partition 39 is arranged in the radial direction of the third interface 38 in the third interface 38, and a through hole is arranged in the middle of the partition 39. A rope 32 is penetrated through the through hole, and the through hole can only allow the rope 32 to pass through. A lightweight sphere 33 is arranged on the end of the rope 32 close to the second interface 37, and the end of the rope 32 away from the second interface 37 is wound on the rotating wheel 31, and the rotating wheel 31 is located on the side of the partition 39 away from the second interface 37 and is rotatably installed on the inner wall of the third interface 38. An end cover 34 is installed on the third interface 38, and the end cover 34 blocks the third interface 38; the first interface is used to connect to the air inlet of the electromagnetic pulse cleaning machine, the second interface is used to connect to the pipeline to be cleaned, the lightweight sphere is used to install an endoscope, and the first interface is exposed as an operation port.

[0036] The endoscope is set on the light ball 33, and the movement of the ball 33 drives the endoscope to move; compressed air is introduced from the first interface 36 to blow the ball 33 to move from the second interface 37 into the pipe 11, so that the ball 33 and the endoscope move into the pipe 11, and the movement of the ball 33 drives the rope 32 to move, and the movement of the rope 32 causes the rotating wheel 31 to rotate forward; the endoscope enters the pipe 11, and the formation of the passivation film inside the pipe 11 can be observed with the endoscope; the rotating wheel 31 is rotated in the reverse direction to recycle the rope 32, so that the rope 32 is wound around the rotating wheel 31, and then the ball 33 and the endoscope are recovered. The passivation condition of the pipe 11 can also be checked by naked eye observation.

[0037] A filter is provided between the water return port of the electromagnetic pulse cleaning machine 22 and the pipe 11, and the filter is used to filter impurities in the liquid. When cleaning the oil tank 12 of the oil system, one end of the pipe 11 can be connected to the oil tank 12, and the other end of the pipe 11 can be connected to the filter and the electromagnetic pulse cleaning machine 22, thereby cleaning the oil tank 12 and filtering the hydraulic oil.

[0038] The hydraulic oil circuit system cleaning device of the embodiment of the utility model can perform alkaline washing and degreasing, desalting flushing, acid washing and compressed air blowing on the pipeline 11 and the hydraulic oil tank 12, so as to clean the impurities and rust of the pipeline 11 and the oil tank 12 and prevent the pipeline 11 from being blocked and affecting the use of the hydraulic oil circuit.

[0039] Example 1

[0040] Before implementing the hydraulic oil circuit system cleaning device of the embodiment of the utility model, in accordance with the GB / T25146-2010 standard, on-site materials and corrosion samples are extracted, pickling tests and corrosion tests are carried out, and the optimal cleaning agent and ratio are determined based on the test results to ensure that other harmful impurities or ions, such as chloride ions and heavy metal ions, are not introduced during the cleaning process.

[0041] Cleaning is performed by the following steps:

[0042] S100: alkaline washing and degreasing treatment is performed on the pipeline 11 with an alkaline washing liquid having a pH value greater than 12. Specifically, the pipeline 11 is subjected to alkaline washing and degreasing treatment with an alkaline washing liquid having a pH value greater than 12, the treatment time is not less than 20 hours, the temperature of the alkaline washing liquid is 80±5°C, and the alkaline washing liquid is pulsed forward and reversely, and the interval time for switching the flow direction of the alkaline washing liquid is not less than 2 hours; preferably, the temperature of the alkaline washing liquid is 80±5°C, and the alkaline washing and degreasing treatment time of the pipeline 11 is greater than 24 hours.

[0043] Assume that the pipeline 11 has two ends, which are a first end and a second end respectively. Initially, the cleaning liquid enters the pipeline 11 from the first end and is discharged from the pipeline 11 from the second end. This process is forward flushing. After the forward flushing continues for a period of time, the entry and discharge positions of the cleaning liquid are switched so that the cleaning liquid enters from the second end of the pipeline 11 and is discharged from the first end. This process is reverse flushing. The total process of forward flushing and reverse flushing is forward and reverse flushing. For example, when flushing the pipeline 11 forward and reversely, the cleaning liquid is introduced into the pipeline 11 in a pulsed manner, so that the cleaning liquid vibrates in a pulse and drives the pipeline 11 to vibrate in a pulse, and then the scale in the pipeline 11 vibrates and falls off. This process is forward and reverse pulse flushing.

[0044] S200: flush the pipe 11 with water to desalinate the pipe 11 and prevent a large amount of salt ions contained in the alkaline washing solution from remaining in the pipe 11. Specifically, according to the amount of water, add a corrosion inhibitor to the water at a ratio of 0.3%, increase the water temperature and circulate the flushing for more than two times, each time for no less than 20 minutes, and stop the water flushing when the flushed water meets the pH value of 7-9 and is clear and transparent without impurities. The corrosion inhibitor can form an anti-corrosion film on the surface of the pipe 11.

[0045] S300: Pickle the pipe 11 with a pickling solution. Specifically, the pipe 11 is first roughly cleaned with a pickling solution having a pH value of 2 and a temperature of T = 45°C-55°C, and then flushed in the forward and reverse directions. The pickling time is less than or equal to 12 hours; preferably, the rough cleaning time is 4 hours, and the flushing direction is switched every 1 hour during the forward and reverse flushing. The inner surface of the hydraulic oil pipe after pickling should be clean, without residual scale and rust, and without obvious metal coarse crystal precipitation. The average metal corrosion rate measured by the corrosion indicator sheet is less than 5.0g / (m2•h), and the total corrosion amount is less than 80g / m2. The flushing direction of the pickling solution is not switched during the rough cleaning.

[0046] S400: Add water into the pipe 11 to make the residual pickling liquid and water merge to form a dilute acid solution with a pH value of 4-4.5, rinse the pipe 11 with the dilute acid solution, and neutralize the dilute acid solution after rinsing to adjust the pH value to 9-9.5. In detail, stop step S400 when it is detected that there is basically no oil stain on the cleaned surface.

[0047] S500: Passivation liquid is introduced into the pipe 11 to passivate the inner wall of the pipe 11, so that a passivation film is formed on the inner wall of the pipe 11. In detail, the pipe 11 is filled with water at 80°C±5°C and added with the passivation liquid, and the pipe 11 is flushed forward and backward, and the interval between forward and reverse flushing is 2±0.5 hours; after the passivation is completed, the liquid in the pipe 11 is drained.

[0048] S600: Purge the pipeline 11 with heated industrial nitrogen or air pulses to dry the inner wall of the pipeline 11. Specifically, the heated industrial nitrogen or air pulse purges to increase the temperature in the pipeline 11 and accelerate the evaporation rate of the liquid in the pipeline 11. The industrial nitrogen or air used for purging does not contain oil and water.

[0049] S700: Check the passivation of the pipe 11. If the passivation of the inner wall of the pipe 11 does not meet the standard, continue the passivation treatment. In detail, use an endoscope to enter the pipe 11 for inspection. If the passivation film formed on the inner wall of the pipe 11 is uniform, the passivation of the inner wall of the pipe 11 meets the standard, and the pipe 11 is processed in the next step. If there is still rust in the pipe 11 or the passivation film is uneven, flush the passivation treatment until the passivation film is uniform.

[0050] S800: soaking the surface of the pipeline 11 with hydraulic oil to protect the pipeline 11 from rust. Specifically, the hydraulic oil is soaked on the surface of the pipeline 11 by manual application.

[0051] S900: Circulate the hydraulic oil to flush the pipe 11. During the oil circulation cleaning, use pulse cleaning or knock on the welds and bends of the pipe 11 to vibrate the pipe 11, thereby causing impurities on the inner wall of the pipe 11 to fall off. The hydraulic oil used to flush the pipe 11 is used hydraulic oil. During the flushing process, the hydraulic oil is circulated and filtered for 5 days ± 1 day. Stop filtering the oil after the oil quality reaches NAS grade 5 and the water content is qualified.

[0052] It should be noted that the process of the above steps S100-S900 belongs to a common cleaning method in the art, and this embodiment integrates the above methods for use through the designed hydraulic oil system cleaning device.

[0053] The pipeline 11 is degreased and descaled using alkaline cleaning solution and acid cleaning solution according to reasonable process parameters, and then the inner wall of the pipeline 11 is passivated using a passivation solution. After the passivation treatment, the formation of the passivation film on the inner wall of the pipeline 11 is checked. If the passivation film is uneven and complete, the passivation treatment is performed again to ensure the passivation quality, slow down the corrosion of the pipeline 11, and avoid the high maintenance cost of the pipeline 11 in the prior art.

[0054] The step of using an alkaline cleaning solution with a pH value greater than 12 to perform alkaline cleaning and degreasing treatment on the pipeline 11 can be achieved by using the dosing stirring tank 21, the electromagnetic pulse cleaning machine 22 and the water source 24 of the hydraulic oil circuit system cleaning device of the utility model embodiment. The alkaline cleaning agent is added from the addition port, and the water source 24 adds water to the dosing stirring tank 21 to dilute the alkaline cleaning agent to form the required alkaline cleaning solution. The electromagnetic pulse cleaning machine 22 passes the alkaline cleaning solution into the pipeline 11 in a pulsed manner. Initially, the alkaline cleaning solution enters the pipeline 11 from the water outlet of the electromagnetic pulse cleaning machine 22 and is recovered from the water return port. During reverse flushing, the water outlet and the water return port are exchanged so that the water outlet is used for water inlet and the water return port is used for water outlet. The alkaline cleaning solution is discharged into the wastewater tank 23 through the sewage outlet of the electromagnetic pulse cleaning machine 22.

[0055] The step of flushing the pipeline 11 with water can be achieved by the dosing stirring tank 21, the electromagnetic pulse cleaning machine 22 and the water source 24 of the hydraulic oil circuit system cleaning device of the embodiment of the utility model. The corrosion inhibitor is added to the dosing stirring tank 21, and the water of the water source 24 first flows through the dosing stirring tank 21, and then the water carries the corrosion inhibitor into the electromagnetic pulse cleaning machine 22, and the electromagnetic pulse cleaning machine 22 passes the water containing the corrosion inhibitor into the pipeline 11. The flushed water is discharged into the wastewater tank 23 through the sewage outlet of the electromagnetic pulse cleaning machine 22.

[0056] The step of pickling the pipeline 11 with the pickling liquid can be achieved by the dosing stirring tank 21, the electromagnetic pulse cleaning machine 22 and the water source 24 of the hydraulic oil circuit system cleaning device of the embodiment of the utility model. The acidic agent is added to the dosing stirring tank 21 from the addition port, and the water source 24 passes water into the dosing stirring tank 21 to dilute the acidic agent. The pickling liquid is discharged into the wastewater tank 23 through the sewage outlet of the electromagnetic pulse cleaning machine 22.

[0057] The step of adding water to the pipe 11 can be achieved by the electromagnetic pulse cleaning machine 22 and the water source 24 of the hydraulic oil circuit system cleaning device of the embodiment of the utility model. The flushed water is discharged into the waste water tank 23 through the sewage outlet of the electromagnetic pulse cleaning machine 22.

[0058] The step of passing the passivation liquid into the pipe 11 to passivate the inner wall of the pipe 11 can be achieved by the electromagnetic pulse cleaning machine 22 and the water source 24 of the hydraulic oil circuit system cleaning device of the embodiment of the utility model. The passivation agent is added to the dosing stirring tank 21 from the addition port. The passivation liquid is discharged into the waste water tank 23 through the sewage outlet of the electromagnetic pulse cleaning machine 22.

[0059] The step of using heated industrial nitrogen or air pulse to purge the pipeline 11 can be achieved by the electromagnetic pulse cleaning machine 22 and the air source of the hydraulic oil circuit system cleaning device of the embodiment of the utility model. The air source passes the heated dry gas from the air inlet into the electromagnetic pulse cleaning machine 22, and the electromagnetic pulse cleaning machine 22 passes the heated dry gas from the water outlet into the pipeline 11 in a pulse manner, and then recovers it from the water return port.

[0060] The step of checking the passivation of the pipeline 11 can be achieved by using the endoscope, electromagnetic pulse cleaning machine 22 and air source of the hydraulic oil circuit system cleaning device of the embodiment of the utility model.

[0061] The step of flushing the pipeline 11 with circulating hydraulic oil can be achieved by the electromagnetic pulse cleaning machine 22 of the hydraulic oil circuit system cleaning device of the embodiment of the utility model.

[0062] With the help of existing cleaning methods, the hydraulic oil system cleaning device is integrated to provide an integrated and efficient solution for cleaning pipes and mailboxes.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A hydraulic oil system cleaning device, characterized in that: It includes a dosing stirring tank with an addition port for adding acidic and alkaline cleaning agents, the liquid inlet of the dosing stirring tank is connected to a water source, the outlet of the dosing stirring tank is connected to an electromagnetic pulse cleaning machine, and the electromagnetic pulse cleaning machine also has a water outlet and a water return port connected to the pipeline to be cleaned, as well as a sewage outlet for discharging sewage, a water inlet for replenishing water, and an air inlet for receiving compressed gas; The sewage outlet is connected to a wastewater tank, the water inlet is connected to a water source, and the air inlet is connected to an air source, and the air source can provide heated compressed gas; The electromagnetic pulse cleaning machine has a built-in water tank and an air pipeline. The water inlet, water outlet, water return port and sewage outlet are all connected to the water tank. The air pipeline is connected to the air inlet and the pipeline to be cleaned through a control valve.

2. The hydraulic oil system cleaning device according to claim 1, characterized in that: The outlet end of the waste water tank is connected to the waste liquid neutralization and external transportation device through a valve.

3. The hydraulic oil system cleaning device according to claim 2 is characterized in that: The gas source comprises a main gas pipeline and a backup gas pipeline, and the main gas pipeline and the backup gas pipeline are switchably connected to the air inlet of the electromagnetic pulse cleaning machine.

4. The hydraulic oil system cleaning device according to claim 3 is characterized in that: The gas source includes an air compressor, a gas storage tank and a heater. The air compressor is used to generate compressed gas, the gas storage tank is used to temporarily store compressed gas, and the heater is connected to the outlet end of the gas storage tank to heat the compressed gas.

5. The hydraulic oil circuit system cleaning device according to any one of claims 1 to 4, characterized in that: The end of the pipeline to be cleaned is connected to the oil tank.

6. The hydraulic oil system cleaning device according to claim 5, characterized in that: It also includes a three-way pipe, which has a first interface, a second interface and a third interface, the first interface is an air inlet interface, the second interface is connected to a pipeline to be observed, a partition is arranged in the third interface along the radial direction of the third interface, a through hole is arranged in the middle of the partition, a rope is passed through the through hole, a lightweight sphere is arranged on the end of the rope close to the second interface, the end of the rope away from the second interface is wound on a rotating wheel, the rotating wheel is located on the side of the partition away from the second interface and is rotatably installed on the inner wall of the third interface, an end cover is installed on the third interface, and the end cover blocks the third interface; the first interface is used to connect to the air inlet of the electromagnetic pulse cleaning machine, the second interface is used to connect to the pipeline to be cleaned, the lightweight sphere is used to install an endoscope, and the first interface is exposed as an operating port.

7. The hydraulic oil system cleaning device according to claim 6, characterized in that: The end cover is assembled and connected with the third interface via a quick-release structure.

8. The hydraulic oil system cleaning device according to claim 7, characterized in that: A filter is arranged between the water return port of the electromagnetic pulse cleaning machine and the pipeline to be cleaned.

9. The hydraulic oil system cleaning device according to claim 7, characterized in that: The gas source is air or nitrogen.

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