WO2022068291A1 - 防水装置、泵送系统、泵送机械和清洗方法 - Google Patents

防水装置、泵送系统、泵送机械和清洗方法 Download PDF

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Publication number
WO2022068291A1
WO2022068291A1 PCT/CN2021/102493 CN2021102493W WO2022068291A1 WO 2022068291 A1 WO2022068291 A1 WO 2022068291A1 CN 2021102493 W CN2021102493 W CN 2021102493W WO 2022068291 A1 WO2022068291 A1 WO 2022068291A1
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WO
WIPO (PCT)
Prior art keywords
valve
pressure
liquid
pipeline
assembly
Prior art date
Application number
PCT/CN2021/102493
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English (en)
French (fr)
Inventor
卢志学
徐周
王勇刚
Original Assignee
三一汽车制造有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202022207546.8U external-priority patent/CN212455508U/zh
Priority claimed from CN202011063417.4A external-priority patent/CN114321388A/zh
Application filed by 三一汽车制造有限公司 filed Critical 三一汽车制造有限公司
Priority to EP21873953.0A priority Critical patent/EP4145025A1/en
Priority to US17/928,730 priority patent/US20230272787A1/en
Publication of WO2022068291A1 publication Critical patent/WO2022068291A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/56—Other sealings for reciprocating rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/002—Sealings comprising at least two sealings in succession
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/40—Sealings between relatively-moving surfaces by means of fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N1/00—Constructional modifications of parts of machines or apparatus for the purpose of lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N2210/00—Applications
    • F16N2210/16—Pumps

Definitions

  • the present application relates to the technical field of waterproofing in pumping systems, and in particular, to a waterproofing device, a pumping system, a pumping machine and a cleaning method.
  • the waterproof device in the prior art does not have the function of pre-cleaning, that is, before the pumping operation of the pumping system, the waterproof device cannot complete the cleaning of its internal pressure chamber and the hydraulic pipeline and valve body connected to the pressure chamber.
  • the oil-water mixture impurities deposited in the pressure chamber can easily cause the spool of the overflow valve to be stuck or the action to be stuck, resulting in the overflow valve not being able to be opened or closed normally, and the sealing chamber (pressure chamber) cannot build pressure.
  • the seal of the piston rod is invalid, causing the external moisture to mix with the hydraulic oil in the gland of the waterproof device, resulting in the emulsification of the hydraulic oil.
  • the present application aims to solve at least one of the technical problems existing in the prior art or related technologies.
  • an object of the present application is to provide a waterproof device.
  • Another object of the present application is to provide a pumping system.
  • Another object of the present application is to provide a pumping machine.
  • an embodiment of the present application provides a waterproof device.
  • the oil cylinder includes a gland and a piston rod penetrated in the gland.
  • the waterproof device includes: a liquid inlet hole, which is provided on the gland; a liquid outlet hole , set on the gland, the liquid outlet hole and the liquid inlet hole are staggered; the sealing component, the sealing component is arranged between the gland and the piston rod; the liquid inlet component, the liquid inlet component is communicated with the liquid inlet hole; the liquid outlet component, The liquid outlet component is communicated with the liquid outlet hole; wherein, an annular pressure volume chamber is formed between the sealing component, the gland and the piston rod, the liquid inlet hole and the liquid outlet hole are both connected with the pressure volume chamber, and the liquid inlet component is used for the pressure volume chamber.
  • the cavity provides pressure oil, and the liquid outlet component is used to control the conduction or disconnection of the pressure cavity and the outside world.
  • the pressure oil entering from the liquid inlet holes can circulate in the pressure chamber and then flow out from the liquid outlet assembly, so that the liquid inlet assembly can affect the pressure chamber and the pressure chamber. Clean the hydraulic pipeline and valve body connected to the pressure chamber.
  • waterproof device in the above-mentioned embodiment provided by this application may also have the following additional technical features:
  • the liquid inlet assembly includes: an oil storage device; a liquid supply pipeline, one end of the liquid supply pipeline is connected with the liquid inlet hole, and the other end of the liquid supply pipeline is connected with the oil storage device;
  • the control valve group is arranged on the liquid supply pipeline to adjust the liquid supply pressure of the liquid supply pipeline.
  • the hydraulic pressure of the liquid supply pipeline is adjusted through the hydraulic control valve group, that is, the oil pressure entering the liquid inlet hole can be adjusted, so that the hydraulic oil with higher pressure can be driven into the pressure chamber.
  • the external moisture is brought into the hydraulic oil inside the waterproof device, causing the problem of hydraulic oil emulsification, thereby ensuring that the pumping work can be carried out normally.
  • the hydraulic control valve group includes: a reversing valve, the reversing valve has a first connection port, a second connection port and a third connection port, and the reversing valve passes through the first connection port and the second connection port It is connected to the liquid supply pipeline; the connecting pipeline, one end of the connecting pipeline is connected to the third connection port, and the other end of the connecting pipeline is connected to the liquid supply pipeline to form a connection point, and the connection point is located at the reversing valve and the liquid inlet hole. between; a first pressure reducing valve, the first pressure reducing valve is arranged on the liquid supply pipeline, and the first pressure reducing valve is located between the second connection port and the connection point.
  • the reversing operation of the reversing valve enables the hydraulic oil to enter the pressure chamber from the connecting pipeline, and the hydraulic oil does not pass through the first pressure reducing valve at this time, so that the higher pressure hydraulic
  • the oil is pumped into the pressure chamber, and the pressure chamber and the hydraulic pipes and valve bodies connected to it are cleaned, so as to ensure that the pressure chamber always has a sealing oil pressure, so that the sealing components can work normally and avoid the piston rod.
  • the sealing failure of the piston rod causes the external moisture to be brought into the hydraulic oil inside the waterproof device, resulting in the problem of hydraulic oil emulsification, thereby ensuring that the pumping work can be carried out normally.
  • the hydraulic control valve group further includes a second pressure reducing valve, the second pressure reducing valve is arranged on the connecting pipeline, and the preset pressure value of the second pressure reducing valve is higher than that of the first pressure reducing valve. Set pressure value.
  • the hydraulic oil enters the pressure chamber from the second pressure reducing valve, and the hydraulic oil does not pass through the first pressure reducing valve at this time, so that the higher pressure can be reduced.
  • the hydraulic oil is injected into the pressure chamber, and the pressure chamber and the hydraulic pipes and valve bodies connected to it are cleaned, so as to ensure that the pressure chamber always has a sealing oil pressure, so that the sealing components can work normally, avoiding the
  • the seal failure of the piston rod causes the piston rod to bring external moisture into the hydraulic oil inside the waterproof device, resulting in the problem of hydraulic oil emulsification, thereby ensuring that the pumping work can be carried out normally.
  • the provision of the second pressure reducing valve can adjust the supply pressure of the connecting pipeline, which can effectively avoid the problem that the supply pressure of the connecting pipeline is too high and damage the connecting pipeline, and at the same time ensure that the waterproof device is connected to the pressure cavity and the connection pipeline.
  • the hydraulic pipeline and valve body have better cleaning effect.
  • the hydraulic control valve group includes: a first pressure reducing valve, the first pressure reducing valve is arranged on the liquid supply pipeline; an on-off valve and a connecting pipeline, the on-off valve is arranged on the connecting pipeline, and the on-off valve is arranged on the connecting pipeline.
  • the valve is connected in parallel with the first pressure reducing valve on the liquid supply pipeline through the connecting pipeline; or, the hydraulic control valve group includes a pilot pressure reducing valve, and the pilot pressure reducing valve is arranged on the liquid supply pipeline.
  • the hydraulic oil enters the pressure chamber from the connecting pipeline, and the hydraulic oil does not pass through the first pressure reducing valve at this time, so that the higher pressure hydraulic oil can be pumped. into the pressure chamber, and clean the pressure chamber and the hydraulic pipes and valve bodies connected with it, so as to ensure that the pressure chamber always has a sealing oil pressure, so that the sealing components can work normally and avoid the sealing of the piston rod.
  • the failure causes the piston rod to bring external moisture into the hydraulic oil inside the waterproof device, resulting in the problem of hydraulic oil emulsification, thereby ensuring that the pumping work can be carried out normally.
  • the hydraulic oil with higher pressure stored in the oil storage device is driven into the pressure chamber through a pilot-operated pressure reducing valve to clean the pressure chamber and the hydraulic pipes and valve bodies connected with it, so as to ensure that the pressure chamber is always established.
  • the oil pressure is sealed, so that the sealing components can work normally, avoiding the problem of hydraulic oil emulsification caused by the piston rod bringing external moisture into the hydraulic oil inside the waterproof device due to the failure of the sealing of the piston rod, thereby ensuring the pumping work. can be performed normally.
  • the liquid inlet assembly further includes: a shut-off valve, the shut-off valve is arranged on the liquid supply pipeline, and the shut-off valve is located between the oil storage device and the hydraulic control valve group; an accumulator, the accumulator is arranged in the supply On the liquid pipeline, the accumulator is located between the oil storage device and the shut-off valve; the first one-way valve, the first one-way valve is arranged on the liquid supply pipeline, and is located between the hydraulic control valve group and the liquid inlet hole, the first one-way valve The one-way valve conducts unidirectionally along the liquid supply direction of the liquid supply pipeline.
  • the shut-off valve has the function of cutting off the oil flow.
  • the shut-off valve can be opened or closed to connect or close the accumulator and the reversing valve, so as to meet the control requirements of the liquid inlet component.
  • the accumulator can provide stable oil pressure for the liquid supply pipeline.
  • the accumulator can provide stable oil pressure for the liquid supply pipeline. The higher oil pressure ensures that the cleaning work can be carried out normally, thereby ensuring that the pumping work can be carried out normally.
  • the first one-way valve has a one-way flow function, so that the hydraulic oil in the liquid supply pipeline can only flow in the direction of the liquid supply, which prevents the hydraulic oil in the liquid return pipeline from flowing back into the liquid supply pipeline. Affect the normal operation of the liquid inlet components.
  • the liquid outlet assembly includes: a liquid return pipeline, one end of which is communicated with the liquid outlet hole; an overflow valve, the overflow valve is arranged on the liquid return pipeline, and the overflow valve is preset
  • the pressure value is lower than the preset pressure value of the second pressure reducing valve of the liquid inlet assembly, and higher than the preset pressure value of the first pressure reducing valve of the liquid inlet assembly;
  • the second one-way valve, the second one-way valve is set at On the liquid return pipeline and between the liquid outlet hole and the overflow valve, the second one-way valve conducts unidirectionally along the liquid return direction of the liquid return pipeline.
  • the second one-way valve has a one-way flow function, so that the hydraulic oil in the liquid return pipeline can only flow in the direction of the oil return, preventing external impurities from being stuck or jammed in the overflow valve. Reverse entry into the pressure chamber will affect the normal operation of the liquid outlet component, thereby ensuring that the waterproof device can work normally.
  • Set the preset pressure value of the overflow valve to be lower than the preset pressure value of the second pressure reducing valve, so that during the flushing operation, the overflow valve will overflow, so as to ensure that the waterproof device has no effect on the pressure chamber and the communication with it. Cleaning effect of hydraulic pipes and valve bodies.
  • the preset pressure value of the overflow valve is set to be higher than the preset pressure value of the first pressure reducing valve, so that during the pumping operation, the overflow valve will not overflow, thereby ensuring that the waterproof device can work normally.
  • the liquid inlet assembly reversing valve is an electromagnetic reversing valve liquid inlet assembly or a zero-leakage electromagnetic reversing valve liquid inlet assembly or a manual three-way ball valve liquid inlet assembly.
  • the electromagnetic reversing valve is a common executive electrical device in the field of electric control, and has the characteristics of simple structure, high reliability and high cost performance, which is convenient for the replacement and maintenance of the reversing valve in the later stage, thereby reducing the waterproof device. Manufacturing and maintenance costs.
  • the zero-leakage electromagnetic reversing valve has the characteristics of simple structure, high reliability and high cost performance, and also has a strong anti-leakage function, that is, the zero-leakage electromagnetic reversing valve has two
  • the one-way valve ensures that the hydraulic oil in the zero-leakage electromagnetic reversing valve can only flow in the preset direction, thereby ensuring the reliability and stability of the zero-leakage electromagnetic reversing valve.
  • the manual three-way ball valve has the characteristics of simple structure and high cost performance, and also has high reliability, that is, compared with the electromagnetic reversing valve, the manual three-way ball valve can be manually reversed directly, without the need for circuit control.
  • the reliability of the three-way ball valve is higher.
  • the technical solution of the second aspect of the present application provides a pumping system, the pumping system includes: a conveying cylinder;
  • the piston rod is connected with the piston rod of the conveying cylinder, and is used to drive the piston rod in the conveying cylinder to move, and the waterproof device is arranged on the end of the main oil cylinder close to the conveying cylinder.
  • the pumping system provided by the technical solution of the second aspect of the present application includes the waterproof device of any one of the technical solutions of the first aspect, it has all the beneficial effects of any of the above-mentioned technical solutions, and will not be repeated here.
  • the pumping system in the present application since the pumping system includes a waterproof device, the pumping system in the present application has the function of cleaning the pressure chamber and the hydraulic pipeline and valve body communicated with the pressure chamber, avoiding the need for existing In the technology, due to the sealing failure of the piston rod, the piston rod brings external moisture into the hydraulic oil inside the waterproof device, resulting in the problem of hydraulic oil emulsification, thereby ensuring that the pumping work can be carried out normally.
  • the technical solution of the third aspect of the present application further provides a pumping machine, including the waterproof device of any one of the technical solutions of the first aspect, or the above-mentioned pumping system.
  • the pumping machine since the pumping machine includes a waterproof device or a pumping system, the pumping machine in the present application has the function of cleaning the pressure chamber and the hydraulic pipeline and valve body communicated with the pressure chamber, The problem of hydraulic oil emulsification caused by the piston rod bringing external moisture into the hydraulic oil inside the waterproof device due to the sealing failure of the piston rod in the prior art is avoided, thereby ensuring that the pumping work can be carried out normally.
  • the technical solution of the fourth aspect of the present application provides a cleaning method.
  • the cleaning method is used for the pumping machine of any one of the technical solutions of the third aspect.
  • the component provides pressure oil for the pressure chamber, and controls the liquid outlet component to make the pressure chamber communicate with the outside world.
  • the cleaning method provided by the technical solution of the fourth aspect of the present application includes the pumping machine of the technical solution of the third aspect, it has all the beneficial effects of any of the above-mentioned technical solutions, and will not be repeated here.
  • the pressure chamber, the hydraulic pipeline and the valve body communicating with the pressure chamber can be cleaned.
  • Fig. 1 shows the structural schematic diagram of the waterproof device in the prior art
  • FIG. 2 shows a schematic structural diagram of a waterproof device according to Embodiment 1 of the present application
  • Fig. 3 shows a partial enlarged view of the waterproof device in Fig. 2;
  • FIG. 4 shows a schematic structural diagram of a waterproof device according to Embodiment 2 of the present application.
  • FIG. 5 shows a schematic structural diagram of a waterproof device according to Embodiment 3 of the present application.
  • FIG. 6 shows a schematic structural diagram of a waterproof device according to Embodiment 4 of the present application.
  • FIG. 7 shows a schematic structural diagram of a waterproof device according to Embodiment 5 of the present application.
  • FIG. 8 shows a schematic structural diagram of a waterproof device according to Embodiment 6 of the present application.
  • the pumping mechanism is the core part of the concrete delivery pump.
  • the reciprocating motion of the piston rod of the hydraulic cylinder drives the delivery cylinder and the concrete piston to realize the continuous operation of concrete suction and pumping.
  • the piston rod of the hydraulic cylinder is immersed in the washing chamber to clean, cool and lubricate.
  • the piston rod of the hydraulic cylinder is retracted, it is easy to bring the water in the washing chamber into the hydraulic oil, resulting in the emulsification and deterioration of the hydraulic oil. As shown in FIG.
  • a piston rod sealing device is generally used at present, that is, a pressure chamber 50 is formed by a set of lip seals 32 facing each other to seal the oil, and a set of dust rings 34 are used to block the intrusion of external pollutants. .
  • the lip seal ring 32 is close to the piston rod 20 under the action of the pressure oil.
  • the pressure chamber 50 The pressure continues to rise, and when it reaches the pressure set by the overflow valve 74 , the overflow valve 74 is opened, and the oil-water mixture in the pressure chamber 50 overflows to the washing chamber through the overflow valve 74 .
  • the washing chamber contains a large amount of sediment mixture, and the surface of the piston rod 20 immersed in the washing chamber will adhere to the surface of the piston rod 20 and other impurities such as sediment, and the dustproof ring 34 cannot completely scrape and squeeze it clean.
  • the sediment impurities on the surface of the piston rod 20 will enter the pressure chamber 50 under the scraping and squeezing of the lip seal 32, so the oil-water mixture scraped and squeezed in the pressure chamber contains a lot of impurities, and these mixtures are deposited in the pressure chamber In 50, when the pressure chamber 50 reaches the overflow pressure, the overflow valve 74 overflows, and impurities can easily cause the valve core of the overflow valve 74 to be directly stuck or the action is stuck, resulting in the overflow valve 74 not being able to open or close normally.
  • the sealing chamber cannot build pressure, which leads to excessive leakage of the system, and even leads to the emulsification of the system hydraulic oil caused by the failure of the sealing of the piston rod 20 .
  • the waterproof device in the prior art does not have the system pre-flushing function, and the oil-water mixed impurities deposited in the pressure chamber 50 are only opened to overflow when the pressure chamber 50 slowly reaches the set pressure of the overflow valve 74. It is easy to cause the spool of the overflow valve 74 to be stuck, making the waterproof device ineffective. The spool sticking of the overflow valve 74 is the biggest factor in the failure of the waterproof seal.
  • the present application and the embodiments of the present application provide a waterproof device for an oil cylinder.
  • the oil cylinder includes a gland 10 and a piston rod 20 penetrated in the gland 10
  • the waterproof device includes a The liquid hole 14 , the liquid outlet hole 16 , the sealing assembly 30 , the liquid inlet assembly 40 and the liquid outlet assembly 70 .
  • the liquid inlet hole 14 is provided on the pressed cover 10 .
  • the liquid outlet hole 16 is arranged on the pressing cover 10
  • the liquid outlet hole 16 and the liquid inlet hole 14 are arranged staggered
  • the sealing assembly 30 is arranged between the pressing cover 10 and the piston rod 20 .
  • the liquid inlet assembly 40 communicates with the liquid inlet hole 14 .
  • the liquid outlet assembly 70 communicates with the liquid outlet hole 16 .
  • An annular pressure chamber 50 is formed between the sealing assembly 30 , the gland 10 and the piston rod 20 , the liquid inlet hole 14 and the liquid outlet hole 16 are both communicated with the pressure chamber 50 , and the liquid inlet assembly 40 is used to provide the pressure chamber 50
  • the pressure oil, the liquid outlet component 70 is used to control the connection or disconnection of the pressure chamber 50 with the outside world.
  • the liquid outlet hole 16 and the liquid inlet hole 14 are arranged staggered, the pressure oil entering from the liquid inlet hole 14 can flow out from the liquid outlet assembly 70 after circulating in the pressure chamber 50 (by controlling the pressure chamber 50 and the liquid inlet hole 14 ). Therefore, the liquid inlet assembly 40 can clean the pressure chamber 50 and the hydraulic pipeline and valve body communicated with the pressure chamber 50 .
  • the waterproof device in the present application has the function of cleaning the pressure chamber 50 , and the liquid inlet assembly 40 injects hydraulic oil with a relatively high pressure into the pressure chamber 50 to perform high-pressure cleaning on the entire waterproof device to take away
  • the impurities deposited in the hydraulic pipeline, the valve body and the pressure chamber 50 prevent the valve core of the overflow element from being stuck or jammed by impurities during the pumping operation, resulting in the problem that the overflow element cannot be opened or closed normally .
  • the above-mentioned overflow element refers to the overflow valve 74 in this application.
  • the liquid inlet assembly includes an oil storage device 41 and a liquid supply pipeline 42 And the hydraulic control valve group 44.
  • the liquid supply pipeline 42 one end of the liquid supply pipeline 42 is connected with the liquid inlet hole 14, and the other end of the liquid supply pipeline 42 is connected with the oil storage device 41;
  • the hydraulic control valve group 44 the hydraulic control valve group 44 is arranged in the supply On the liquid pipeline 42, it is used to adjust the liquid supply pressure of the liquid supply pipeline 42;
  • the liquid outlet assembly 70 includes a liquid return pipeline 72, an overflow valve 74 and a second one-way valve 76, wherein the liquid return pipeline 72, One end of the liquid return line 72 is communicated with the liquid outlet hole 16 , and an overflow valve 74 is arranged on the liquid return line 72 .
  • the hydraulic pressure of the liquid supply pipeline is adjusted through the hydraulic control valve group 44, that is, the oil pressure entering the liquid inlet hole 14 can be adjusted, so that the hydraulic oil of higher pressure can be driven into the pressure chamber 50.
  • the relief valve 74 is opened to generate overflow, so as to clean the pressure chamber 50 and the hydraulic pipeline and valve body connected with it, so as to ensure that the pressure chamber 50 always has a sealing oil pressure, so that the sealing assembly 30 can Normal operation avoids the problem of hydraulic oil emulsification caused by the piston rod 20 bringing external moisture into the hydraulic oil inside the waterproof device due to the failure of the sealing of the piston rod, thereby ensuring that the pumping work can be carried out normally.
  • the hydraulic pressure of the liquid supply pipeline is adjusted through the hydraulic control valve group 44, that is, the oil pressure entering the liquid inlet hole 14 can be adjusted, so that the hydraulic oil of higher pressure can be driven into the pressure chamber 50.
  • the relief valve 74 is opened to generate overflow, so as to clean the pressure chamber 50 and the hydraulic pipeline and valve body connected with it, so as to ensure that the pressure chamber 50 always has a sealing oil pressure, so that the sealing assembly 30 can Normal operation avoids the problem of hydraulic oil emulsification caused by the piston rod 20 bringing external moisture into the hydraulic oil inside the waterproof device due to the failure of the sealing of the piston rod 20, thereby ensuring that the pumping work can be carried out normally.
  • the hydraulic control valve group 44 further includes a second pressure reducing valve 446 , the second pressure reducing valve 446 is arranged on the connecting pipeline 442 , and the second pressure reducing valve 446
  • the preset pressure value of the valve 446 is higher than the preset pressure value of the first pressure reducing valve 444 .
  • the hydraulic oil enters the pressure chamber 50 from the second pressure reducing valve 446. At this time, the hydraulic oil does not pass through the first pressure reducing valve 444, so that the higher pressure can be reduced.
  • the pressure hydraulic oil is injected into the pressure chamber 50 to open the relief valve 74 to generate overflow, thereby cleaning the pressure chamber 50 and the hydraulic pipes and valve bodies connected with it, so as to ensure that the pressure chamber is always established with
  • the oil pressure is sealed, so that the sealing assembly 30 can work normally, and the piston rod 20 will not bring external moisture into the hydraulic oil inside the waterproof device due to the failure of the sealing of the piston rod, resulting in the problem of emulsification of the hydraulic oil, thereby ensuring the pump
  • the delivery work can be carried out normally.
  • the provision of the second pressure reducing valve 446 can adjust the supply pressure of the connecting pipeline 442, which can effectively avoid the problem that the supply pressure of the connecting pipeline 442 is too high and cause the connecting pipeline 442 to be damaged, and at the same time ensure that the waterproof device has no effect on the pressure capacity of the connecting pipeline 442.
  • the cavity 50 and the hydraulic pipeline and valve body communicated with it have better cleaning effect.
  • the waterproof device when the pumping system is in normal operation, the waterproof device is in normal operation, and the hydraulic pressure enters the pressure chamber 50 from the first pressure reducing valve 444 , and the pressure value set by the first pressure reducing valve 444 is lower than that of the relief valve 74 .
  • the overflow pressure ensures that the pressure chamber 50 can maintain pressure, and the sealing assembly 30 of the waterproof device can normally seal the piston rod 20, thereby ensuring that the waterproof device can work normally.
  • the second pressure reducing valve 446 enters the pressure chamber 50 , and the pressure value set by the second pressure reducing valve 446 is higher than the overflow pressure of the overflow valve 74 , thus ensuring that the overflow valve 74 is opened and deposits in the pressure chamber 50
  • the oil-water mixture impurities can be discharged from the overflow valve 74 with the oil flow, so as to realize the self-cleaning function of the waterproof device.
  • the liquid inlet assembly 40 further includes a shut-off valve 46 , an accumulator 48 and a first one-way valve 49 .
  • the cut-off valve 46 is disposed on the liquid supply pipeline 42 , and the cut-off valve 46 is located between the oil storage device 41 and the hydraulic control valve group 44 .
  • the accumulator 48 is arranged on the liquid supply pipeline 42, and the accumulator 48 is located between the oil storage device 41 and the shut-off valve 46; the first one-way valve 49, the first one-way valve 49 is arranged on the liquid supply pipeline 42 , and is located between the hydraulic control valve group 44 and the liquid inlet hole 14 , and the first one-way valve 49 conducts unidirectionally along the liquid supply direction of the liquid supply pipeline 42 .
  • the cut-off valve 46 has the function of cutting off the oil flow. According to the actual situation, the cut-off valve 46 can be opened or closed to connect or close the accumulator 48 and the reversing valve, so as to meet the control requirements of the liquid inlet assembly 40 .
  • the accumulator 48 can provide stable oil pressure for the liquid supply pipeline. When the pressure chamber 50 and the hydraulic pipeline and valve body connected to the pressure chamber 50 need to be cleaned, the accumulator 48 is the liquid supply pipe.
  • the road stably provides high oil pressure to ensure that the cleaning work can be carried out normally, thereby ensuring that the pumping work can be carried out normally.
  • the first one-way valve 49 has a one-way flow function, so that the hydraulic oil in the liquid supply pipeline can only flow in the direction of the liquid supply, preventing the hydraulic oil in the liquid return pipeline from flowing back into the liquid supply pipeline As a result, the normal operation of the liquid inlet assembly 40 is affected.
  • the liquid outlet assembly 70 includes a liquid return line 72 , an overflow valve 74 and a second one-way valve 76 .
  • the liquid return line 72 is in communication with the liquid outlet hole 16 at one end.
  • the overflow valve 74 is arranged on the liquid return line 72, and the preset pressure value of the overflow valve 74 is lower than the preset pressure value of the second pressure reducing valve 446 of the liquid inlet assembly 40, and is higher than the first pressure value of the liquid inlet assembly 40.
  • a preset pressure value of the pressure reducing valve 444 is disposed on the liquid return line 72 and is located between the liquid outlet hole 16 and the overflow valve 74 .
  • the oil storage device 41 stores hydraulic oil with a relatively high pressure, and the oil pressure of the hydraulic oil in the oil storage device 41 and the accumulator 48 is higher than that of the first pressure reducing valve 444 and the second pressure reducing valve 446. set pressure and the relief pressure of the relief valve 74.
  • the reversing valve adopts an electromagnetic reversing valve 4411 .
  • the electromagnetic reversing valve 4411 is a common executive electrical device in the field of electronic control, and has the characteristics of simple structure, high reliability and high cost performance, which facilitates the replacement and maintenance of the reversing valve in the later stage, thereby reducing the manufacturing of waterproof devices. and maintenance costs.
  • the sealing assembly 30 includes two lip-shaped sealing rings 32 arranged opposite to each other, and the liquid inlet hole 14 and the liquid outlet hole 16 are located in the two lip-shaped sealing rings 32 . between the sealing rings 32 .
  • the lip seal 32 is deformed under the action of oil pressure, the lip portion of the lip seal 32 opens, and the lip seal 32 is connected to the outer peripheral surface of the piston rod 20 and the inner wall surface of the gland 10 .
  • the lip seal 32 is completely fitted with the outer peripheral surface of the piston rod 20 and the inner wall surface of the gland 10, thereby preventing the external moisture from entering the inner cavity of the gland 10 and preventing the moisture from entering the inner cavity of the gland 10.
  • the mixing of hydraulic oil causes the problem of emulsification and deterioration of hydraulic oil, thereby ensuring that the waterproof device can work normally.
  • liquid inlet hole 14 is arranged between the two oppositely arranged lip seals 32, so that the lip portion of the lip seal 32 faces the flow direction of the hydraulic oil, so that the lip portion can be opened quickly, Thereby, the stability and reliability of the sealing of the sealing assembly 30 are ensured, thereby ensuring that the waterproof device can work normally, and the liquid outlet hole 16 is arranged between the two oppositely arranged lip-shaped sealing rings 32 to facilitate the pressure relief of the pressure chamber 50 And the discharge of impurities such as oil-water mixture.
  • the sealing assembly 30 includes two dust rings 34 , and the two lip seal rings 32 are arranged between the two dust rings 34 .
  • the dustproof ring 34 can prevent external contaminants from entering the inner cavity of the gland 10 to contaminate the hydraulic oil, thereby ensuring that the waterproof device can work normally.
  • the electromagnetic reversing valve 4411 is energized, the second pressure reducing valve 446 is connected to the oil circuit, and the hydraulic oil with higher pressure enters the pressure chamber 50 through the second pressure reducing valve 446.
  • the set pressure of the pressure reducing valve 446 is higher than the overflow pressure of the overflow valve 74, the overflow valve 74 is opened, and the oil-water mixture impurities deposited in the pressure chamber 50 are directly overflowed through the overflow valve 74, so that the pressure chamber 50 is overflowed. 50 and the hydraulic pipeline and valve body communicated with the pressure chamber 50 perform cleaning operations.
  • the electromagnetic reversing valve 4411 is de-energized, the first pressure reducing valve 444 is connected to the oil circuit, and the hydraulic oil with higher pressure enters the pressure chamber 50 through the first pressure reducing valve 444.
  • the set pressure of a pressure reducing valve 444 is lower than the overflow pressure of the relief valve 74, the relief valve 74 is temporarily closed, and when the piston rod 20 reciprocates, the pressure of the pressure chamber 50 will be reduced by the oil scraping action of the lip seal 32. It rises slowly, and when the overflow pressure is reached, the overflow valve 74 opens again to overflow.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the reversing valve adopts a zero-leakage electromagnetic reversing valve 4413 .
  • the zero-leakage electromagnetic reversing valve 4413 has the characteristics of simple structure, high reliability and high cost performance, and also has a strong anti-leakage function, that is, the zero-leakage electromagnetic reversing valve 4413 is compared with the traditional electromagnetic reversing valve 4413.
  • the valve is provided with two one-way valves, which ensures that the hydraulic oil in the zero-leakage electromagnetic reversing valve can only flow in a preset direction, thereby ensuring the reliability and stability of the zero-leakage electromagnetic reversing valve 4413.
  • the reversing valve adopts a manual three-way ball valve 4415 .
  • the manual three-way ball valve 4415 has the characteristics of simple structure and high cost performance, and also has high reliability. Through circuit control, the reliability of the manual three-way ball valve 4415 is higher.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the hydraulic control valve group 44 includes a pilot-operated pressure reducing valve 449 , and the pilot-operated pressure reducing valve 449 is provided on the liquid supply pipeline 42 .
  • the hydraulic oil is driven into the pressure chamber 50 through the pilot-operated pressure reducing valve 449 to clean the pressure chamber 50 and the hydraulic pipeline and valve body connected with it, so as to ensure that the pressure chamber 50 is always established with sealing oil.
  • pressure so that the sealing assembly 30 can work normally, avoiding the problem of hydraulic oil emulsification caused by the piston rod 20 bringing external moisture into the hydraulic oil inside the waterproof device due to the failure of the sealing of the piston rod 20, thereby ensuring pumping Work can proceed normally.
  • the pilot-operated pressure reducing valve 449 has a control oil passage K, and the pressure of the pilot-operated pressure reducing valve 449 can be set through the control oil passage K.
  • the pressure of the pilot pressure reducing valve 449 is set to be lower than the relief pressure of the relief valve 74, and the pressure of the pilot pressure reducing valve 449 is set higher than the relief pressure of the relief valve 74 during the cleaning operation. flow pressure. In this way, the pressure of the pilot-operated pressure reducing valve 449 is set by the control oil passage K, thereby realizing the self-cleaning function of the waterproof device.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • Embodiment 5 The difference between Embodiment 5 and Embodiment 1 is as follows:
  • Embodiment 6 is a diagrammatic representation of Embodiment 6
  • the hydraulic control valve group 44 includes a first pressure reducing valve 444 , an on-off valve 448 and a connecting pipeline 442 .
  • the first pressure reducing valve 444 is provided on the liquid supply line 42 .
  • the on-off valve 448 is arranged on the connecting pipeline 442 , and the on-off valve 448 is connected to the liquid supply pipeline 42 in parallel with the first pressure reducing valve 444 through the connecting pipeline 442 .
  • the hydraulic oil enters the pressure chamber 50 from the connecting pipeline, and the hydraulic oil does not pass through the first pressure reducing valve 444 at this time, so that the higher pressure hydraulic oil can be discharged.
  • the oil circuit switching is realized by the reversing valve, which is convenient for reversing.
  • the deposited impurities can be washed away with high-pressure oil to improve the cleanliness of the hydraulic system.
  • the second one-way valve 76 is added to prevent impurities in the washing chamber from entering the pressure chamber reversely when the overflow valve 74 is stuck or blocked.
  • the pressure of the pilot pressure reducing valve 449 can be set according to actual needs, or the pressure of the first pressure reducing valve 444 and the second pressure reducing valve 446 can be set to realize the switching between the cleaning mode and the pumping mode.
  • the application also provides a pumping system, the pumping system includes: a conveying cylinder; a main oil cylinder, on which is provided the waterproof device for the oil cylinder according to any one of the technical solutions of the first aspect; wherein the piston of the main oil cylinder is The rod is connected with the piston rod of the conveying cylinder, and is used to drive the piston rod 20 in the conveying cylinder to move, and the waterproof device is arranged on the end of the main oil cylinder close to the conveying cylinder.
  • the pumping system in the present application since the pumping system includes a waterproof device, the pumping system in the present application has the function of cleaning the pressure chamber 50 and the hydraulic pipeline and valve body communicating with the pressure chamber 50, thereby avoiding the need for current cleaning.
  • the piston rod 20 due to the failure of the seal of the piston rod 20, the piston rod 20 brings external moisture into the hydraulic oil inside the waterproof device, resulting in the problem of emulsification of the hydraulic oil, thereby ensuring that the pumping work can be performed normally.
  • the pumping system provided by the technical solution of the second aspect of the present application includes the waterproof device of any one of the embodiments of the first aspect, it has all the beneficial effects of any of the above-mentioned embodiments, which will not be repeated here.
  • the present application also provides a pumping machine, including the waterproof device of any one of the embodiments of the first aspect, or the above-mentioned pumping system.
  • the pumping machine since the pumping machine includes a waterproof device or a pumping system, the pumping machine in this application has the function of cleaning the pressure chamber and the hydraulic pipeline and valve body communicated with the pressure chamber, avoiding the need for cleaning.
  • the piston rod due to the failure of the seal of the piston rod, the piston rod brings external moisture into the hydraulic oil inside the waterproof device, resulting in the emulsification of the hydraulic oil, thereby ensuring that the pumping work can be carried out normally.
  • the present application also provides a cleaning method for self-cleaning of the pumping system.
  • the cleaning method utilizes the above-mentioned pumping machinery for cleaning, and the cleaning method includes the step S10 of cleaning the pressure chamber 50 with the liquid inlet assembly 40 .
  • the cleaning step S10 in Embodiments 1 to 3 includes:
  • the overflow valve 74 is automatically opened to overflow and discharge impurities.
  • the cleaning step S10 in the fourth embodiment includes:
  • the cleaning step S10 in the fifth embodiment includes:
  • the cleaning step S10 in the fourth embodiment includes:
  • the overflow valve 74 is automatically opened to perform overflow to discharge impurities.
  • the liquid inlet assembly 40 can clean the pressure chamber 50 and the hydraulic pipelines and valve bodies communicated with the pressure chamber 50 .

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Abstract

一种用于油缸的防水装置，油缸包括压盖（10）和穿设于压盖（10）内的活塞杆（20），防水装置包括：进液孔（14），设置于该压盖（10）上；出液孔（16），设置于该压盖（10）上，出液孔（16）与进液孔（14）错开布置；密封组件（30），密封组件（30）设置于压盖（10）与活塞杆（20）之间；进液组件（40），进液组件（40）与进液孔（14）连通；出液组件（70），出液组件（70）与出液孔（16）连通。该防水装置的进液组件能够对压力容腔以及与压力容腔相连通的液压管路和阀体进行清洗，避免了现有技术中由于压力容腔内的杂质堵塞出液组件中的溢流元件而导致溢流元件无法正常地开启或关闭的问题，从而确保压力容腔始终建立有密封油压，使得密封组件能够正常工作，进而确保泵送工作能够正常进行。此外具有该防水装置的泵送系统、泵送机械和使用该防水装置的泵送机械的清洗方法被公开。

Description

防水装置、泵送系统、泵送机械和清洗方法
本申请要求于2020年09月30日提交到中国国家知识产权局的申请号为202011063417.4、发明名称为“防水装置、泵送系统、泵送机械和清洗方法”的中国专利申请的优先权，并要求于2020年09月30日提交到中国国家知识产权局的申请号为202022207546.8、发明名称为“防水装置、泵送系统和泵送机械”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及泵送系统中的防水技术领域，具体而言，涉及一种防水装置、泵送系统、泵送机械和清洗方法。
背景技术
现有技术中的防水装置不带预先清洗的功能，即在泵送系统泵送作业前，防水装置不能够完成其内部压力容腔以及与压力容腔相连通的液压管路和阀体的清洗，这样沉积于压力容腔内的油水混合物类杂质很容易造成溢流阀的阀芯卡死或动作卡顿，导致溢流阀无法正常开启或关闭，密封腔(压力容腔)无法建压，从而使活塞杆的密封失效，导致外部的水分与防水装置的压盖内的液压油混合，造成液压油乳化。
发明内容
本申请旨在至少解决现有技术或相关技术中存在的技术问题之一。
为此，本申请的一个目的在于提供一种防水装置。
本申请的另一个目的在于提供一种泵送系统。
本申请的另一个目的在于提供一种泵送机械。
本申请的另一个目的在于提供一种清洗方法。
为了实现上述目的，本申请的实施例提供了一种防水装置，油缸包括压盖和穿设于压盖内的活塞杆，防水装置包括：进液孔，设置于所压盖上；出液孔，设置于所压盖上，出液孔与进液孔错开布置；密封组件，密封组件设置于压盖 与活塞杆之间；进液组件，进液组件与进液孔连通；出液组件，出液组件与出液孔连通；其中，密封组件与压盖、活塞杆之间形成环形的压力容腔，进液孔和出液孔均与压力容腔连通，进液组件用于为压力容腔提供压力油，出液组件用于控制压力容腔与外界的导通或断开。
在该技术方案中，由于出液孔与进液孔错开布置，从进液孔进入的压力油可以在压力容腔中循环流动后从出液组件流出，因而进液组件能够对压力容腔以及与压力容腔相连通的液压管路和阀体进行清洗。这样避免了现有技术中由于压力容腔内的杂质堵塞出液组件中的溢流元件而导致溢流元件无法正常地开启或者关闭的问题，从而确保压力容腔始终建立有密封油压，使得密封组件能够正常地工作，避免了因活塞杆的密封失效而导致活塞杆将外部的水分带入防水装置内部的液压油中，导致液压油乳化的问题，进而确保泵送工作能够正常地进行。
另外，本申请提供的上述实施例中的防水装置还可以具有如下附加技术特征：
在上述技术方案中，进液组件包括：储油装置；供液管路，供液管路的一端与进液孔连通，供液管路另一端与储油装置连接；液控阀组，液控阀组设置在供液管路上，用于调节供液管路的供液压力。
在该技术方案中，通过液控阀组对供液管路的供液压力进行调节，即进入进液孔处的油压可调，这样可将较高压力的液压油打入压力容腔内，对压力容腔以及与其相连通的液压管道和阀体进行清洗，从而确保压力容腔始终建立有密封油压，使得密封组件能够正常地工作，避免了因活塞杆的密封失效而导致活塞杆将外部的水分带入防水装置内部的液压油中，导致液压油乳化的问题，进而确保泵送工作能够正常地进行。
在上述任一技术方案中，液控阀组包括：换向阀，换向阀具有第一连接口、第二连接口和第三连接口，换向阀通过第一连接口和第二连接口连接在供液管路上；连接管路，连接管路的一端与第三连接口连接，连接管路的另一端与供液管路相连接形成连接点，连接点位于换向阀和进液孔之间；第一减压阀，第一减压阀设置在供液管路上，第一减压阀位于第二连接口和连接点之间。
在该技术方案中，通过对换向阀进行换向操作，使得液压油从连接管路进 入到压力容腔内，此时液压油不经过第一减压阀，这样可将较高压力的液压油打入压力容腔内，对压力容腔以及与其相连通的液压管道和阀体进行清洗，从而确保压力容腔始终建立有密封油压，使得密封组件能够正常地工作，避免了因活塞杆的密封失效而导致活塞杆将外部的水分带入防水装置内部的液压油中，导致液压油乳化的问题，进而确保泵送工作能够正常地进行。
在上述任一技术方案中，液控阀组还包括第二减压阀，第二减压阀设置在连接管路上，第二减压阀的预设压力值高于第一减压阀的预设压力值。
在该技术方案中，通过对换向阀进行换向操作，使得液压油从第二减压阀进入到压力容腔内，此时液压油不经过第一减压阀，这样可将较高压力的液压油打入压力容腔内，对压力容腔以及与其相连通的液压管道和阀体进行清洗，从而确保压力容腔始终建立有密封油压，使得密封组件能够正常地工作，避免了因活塞杆的密封失效而导致活塞杆将外部的水分带入防水装置内部的液压油中，导致液压油乳化的问题，进而确保泵送工作能够正常地进行。另外，设置第二减压阀能够调节连接管路的供液压力，能够有效避免连接管路的供液压力过高而损坏连接管路的问题，同时确保防水装置对压力容腔以及与其相连通的液压管道和阀体具有较好的清洗效果。
在上述任一技术方案中，液控阀组包括：第一减压阀，第一减压阀设置在供液管路上；通断阀和连接管路，通断阀设置连接管路上，通断阀通过连接管路与第一减压阀并联连接在供液管路上；或者，液控阀组包括先导式减压阀，先导式减压阀设置在供液管路上。
在该技术方案中，通过对通断阀进行操作，使得液压油从连接管路进入到压力容腔内，此时液压油不经过第一减压阀，这样可将较高压力的液压油打入压力容腔内，对压力容腔以及与其相连通的液压管道和阀体进行清洗，从而确保压力容腔始终建立有密封油压，使得密封组件能够正常地工作，避免了因活塞杆的密封失效而导致活塞杆将外部的水分带入防水装置内部的液压油中，导致液压油乳化的问题，进而确保泵送工作能够正常地进行。储油装置内存储有较高压力的液压油通过先导式减压阀打入压力容腔，以对压力容腔以及与其相连通的液压管道和阀体进行清洗，从而确保压力容腔始终建立有密封油压，使得密封组件能够正常地工作，避免了因活塞杆的密封失效而导致活塞杆将外部 的水分带入防水装置内部的液压油中，导致液压油乳化的问题，进而确保泵送工作能够正常地进行。
在上述任一技术方案中，进液组件还包括：截止阀，截止阀设置在供液管路上，截止阀位于储油装置与液控阀组之间；蓄能器，蓄能器设置在供液管路上，蓄能器位于储油装置与截止阀之间；第一单向阀，第一单向阀设置在供液管路上，且位于液控阀组与进液孔之间，第一单向阀沿供液管路的供液方向单向导通。
在该技术方案中，截止阀具有截断油流的作用，可根据实际情况，开启或者关闭截止阀，以连通或者关闭蓄能器与换向阀，从而满足进液组件的控制要求。蓄能器能够为供液管路提供稳定的油压，当需要对压力容腔以及与压力容腔相连通的液压管路和阀体进行清洗时，蓄能器为供液管路稳定地提供较高的油压，从而确保清洗工作能够正常地进行，进而确保泵送工作能够正常地进行。另外，第一单向阀具有单向流通功能，这样使得供液管路中的液压油只能朝供液方向进行流动，避免了回液管路中的液压油回流到供液管路内而影响进液组件的正常工作。
在上述任一技术方案中，出液组件包括：回液管路，回液管路的一端与出液孔连通；溢流阀，溢流阀设置在回液管路上，溢流阀的预设压力值低于进液组件的第二减压阀的预设压力值，且高于进液组件的第一减压阀的预设压力值；第二单向阀，第二单向阀设置在回液管路上，且位于出液孔和溢流阀之间，第二单向阀沿回液管路的回液方向单向导通。
在该技术方案中，第二单向阀具有单向流通功能，这样使得回液管路中的液压油只能朝回油方向进行流动，防止外部的杂质在溢流阀卡滞或者卡塞时逆向进入压力容腔内而影响出液组件的正常工作，进而确保防水装置能够正常地工作。将溢流阀的预设压力值设置成低于第二减压阀的预设压力值，这样在冲洗作业时，溢流阀会溢流，从而确保防水装置对压力容腔以及与其相连通的液压管道和阀体的清洗效果。将溢流阀的预设压力值设置成高于第一减压阀的预设压力值，这样在泵送作业时，溢流阀不会溢流，从而确保防水装置能够正常地工作。
在上述任一技术方案中，进液组件换向阀为电磁换向阀进液组件或者零泄 漏电磁换向阀进液组件或者手动三通球阀进液组件。
在该技术方案中，电磁换向阀是电控领域通用的执行电器件，具有结构简单、可靠性高且性价比高的特点，这样便于换向阀后期的更换和维护，从而降低了防水装置的制造和维护成本。零泄漏电磁换向阀具有结构简单、可靠性高且性价比高的特点的同时，还具有较强的防泄漏功能，即零泄漏电磁换向阀相对于传统的电磁换向阀，设置有两个单向阀，这样确保零泄漏电磁换向阀中的液压油只能朝预设的方向流动，进而确保零泄漏电磁换向阀工作的可靠性和稳定性。手动三通球阀具有结构简单和性价比高的特点的同时，还具有较高的可靠性，即相对于电磁换向阀，可直接对手动三通球阀进行手动换向，无需通过电路控制，这样手动三通球阀的可靠性更高。
本申请第二方面的技术方案提供了一种泵送系统，泵送系统包括：输送缸；主油缸，主油缸上设置有如第一方面技术方案中任一项的防水装置；其中，主油缸的活塞杆与输送缸的活塞杆连接，用于够带动输送缸内的活塞杆运动，防水装置设置于主油缸上靠近输送缸的一端。
本申请第二方面的技术方案提供的泵送系统，因包括第一方面技术方案中任一项的防水装置，因而具有上述任一技术方案所具有的一切有益效果，在此不再赘述。
在上述方案中，由于泵送系统包括防水装置，这样使得本申请中的泵送系统具有对压力容腔以及与压力容腔相连通的液压管路和阀体进行清洗的功能，避免了现有技术中因活塞杆的密封失效而导致活塞杆将外部的水分带入防水装置内部的液压油中，导致液压油乳化的问题，进而确保泵送工作能够正常地进行。
本申请第三方面的技术方案还提供可一种泵送机械，包括第一方面技术方案的任一项的防水装置，或上述泵送系统。
在上述方案中，由于泵送机械包括防水装置或者泵送系统，这样使得本申请中的泵送机械具有对压力容腔以及与压力容腔相连通的液压管路和阀体进行清洗的功能，避免了现有技术中因活塞杆的密封失效而导致活塞杆将外部的水分带入防水装置内部的液压油中，导致液压油乳化的问题，进而确保泵送工作能够正常地进行。
本申请第四方面的技术方案提供了一种清洗方法，清洗方法用于第三方面技术方案中任一项的泵送机械，清洗方法包括：步骤S10，在泵送机械作业前，启动进液组件为压力容腔提供压力油，并控制出液组件使压力容腔与外界导通。
本申请第四方面的技术方案提供的清洗方法，因包括第三方面技术方案中的泵送机械，因而具有上述任一技术方案所具有的一切有益效果，在此不再赘述。
在上述方案中，通过上述步骤S10，能够对压力容腔以及与压力容腔相连通的液压管路和阀体进行清洗。这样避免了现有技术中由于压力容腔内的杂质堵塞出液组件中的溢流元件而导致溢流元件无法正常地开启或者关闭的问题，从而确保压力容腔始终建立有密封油压，使得密封组件能够正常地工作，避免了因活塞杆的密封失效而导致活塞杆将外部的水分带入防水装置内部的液压油中，导致液压油乳化的问题，进而确保泵送工作能够正常地进行。
本申请的附加方面和优点将在下面的描述部分中变得明显，或通过本申请的实践了解到。
附图说明
本申请的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1出了现有技术中的防水装置的结构示意图；
图2示出了根据本申请实施例一的防水装置的结构示意图；
图3示出了图2中的防水装置的局部放大视图；
图4示出了根据本申请实施例二的防水装置的结构示意图；
图5示出了根据本申请实施例三的防水装置的结构示意图；
图6示出了根据本申请实施例四的防水装置的结构示意图；
图7示出了根据本申请实施例五的防水装置的结构示意图；
图8示出了根据本申请实施例六的防水装置的结构示意图。
其中，图1至图8中附图标记与部件名称之间的对应关系为：
10、压盖；14、进液孔；16、出液孔；20、活塞杆；30、密封组件；32、 唇形密封圈；34、防尘圈；40、进液组件；41、储油装置；42、供液管路；44、液控阀组；4411、电磁换向阀；4412、第一连接口；4413、零泄漏电磁换向阀；4414、第二连接口；4415、手动三通球阀；4416、第三连接口；442、连接管路；444、第一减压阀；446、第二减压阀；448、通断阀；449、先导式减压阀；46、截止阀；48、蓄能器；49、第一单向阀；70、出液组件；72、回液管路；74、溢流阀；76、第二单向阀；50、压力容腔；60、连接点。
具体实施方式
为了能够更清楚地理解本申请的上述目的、特征和优点，下面结合附图和具体实施方式对本申请进行进一步的详细描述。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本申请，但是，本申请还可以采用其他不同于在此描述的其他方式来实施，因此，本申请的保护范围并不受下面公开的具体实施例的限制。
需要说明的是，泵送机构是混凝土输送泵的核心部分，通过液压缸活塞杆的往复运动带动输送缸及砼活塞实现混凝土吸料与泵料的连续作业。工作过程中，液压缸活塞杆浸泡在洗涤室中，起到清洗、冷却及润滑作用。液压缸活塞杆退回时，容易将洗涤室中的水带入液压油中，造成液压油乳化变质。如图1所示，目前一般采用活塞杆密封装置，即通过一组唇口相对的唇形密封圈32形成压力容腔50来封油，利用一组防尘圈34来阻隔外界污染物的侵入。唇形密封圈32在压力油的作用下紧贴活塞杆20，活塞杆20往复运动时，附着在活塞杆20上的油膜和水膜被密封圈刮下进入压力容腔50，压力容腔50压力不断升高，当升高到溢流阀74设定的压力时，溢流阀74开启，压力容腔50中的油水混合物通过溢流阀74溢流至洗涤室。由于泵送装置工作环境极其恶劣，洗涤室中含有大量泥沙混合物，浸泡在洗涤室中的活塞杆20表面会附着一些泥沙等杂质，防尘圈34无法将其完全刮挤干净，这些附着在活塞杆20表面的泥沙杂质会在唇形密封圈32的刮挤下进入压力容腔50中，所以压力容腔中刮挤下来的油水混合物中含有很多杂质，这些混合物沉积在压力容腔50中，在压力容腔50达到溢流压力时溢流阀74溢流，杂质很容易造成溢流阀 74的阀芯直接卡死或动作卡顿，导致溢流阀74无法正常开启或关闭，密封腔无法建压，从而导致系统泄流量过大，甚至导致活塞杆20的密封失效而造成的系统液压油乳化。
如图1所示，现有技术中的防水装置不带系统预先冲洗功能，沉积于压力容腔50的油水混合杂质在压力容腔50缓慢达到溢流阀74设定压力时才打开溢流，很容易造成溢流阀74的阀芯卡滞，使防水装置失效。溢流阀74的阀芯卡滞是防水密封失效的最大因素。
下面参照图2至图8描述根据本申请一些实施例的防水装置。
如图2至图8所示，本申请及本申请的实施例提供了一种用于油缸的防水装置，油缸包括压盖10和穿设于压盖10内的活塞杆20，防水装置包括进液孔14、出液孔16、密封组件30、进液组件40和出液组件70。其中，进液孔14设置于所压盖10上。出液孔16设置于所压盖10上，出液孔16与进液孔14错开布置，密封组件30设置于压盖10与活塞杆20之间。进液组件40与进液孔14连通。出液组件70与出液孔16连通。密封组件30与压盖10、活塞杆20之间形成环形的压力容腔50，进液孔14和出液孔16均与压力容腔50连通，进液组件40用于为压力容腔50提供压力油，出液组件70用于控制压力容腔50与外界的导通或断开。
上述设置中，由于出液孔16与进液孔14错开布置，从进液孔14进入的压力油可以在压力容腔50中循环流动后从出液组件70流出(通过控制压力容腔50与外界的导通或断开)，因而进液组件40能够对压力容腔50以及与压力容腔50相连通的液压管路和阀体进行清洗。这样避免了现有技术中由于压力容腔50内的杂质堵塞出液组件70中的溢流元件而导致溢流元件无法正常地开启或者关闭的问题，从而确保压力容腔始终建立有密封油压，使得密封组件30能够正常地工作，避免了因活塞杆的密封失效而导致活塞杆将外部的水分带入防水装置内部的液压油中，导致液压油乳化的问题，进而确保泵送工作能够正常地进行。
需要说明的是，本申请中的防水装置具有对压力容腔50的清洗功能，进液组件40向压力容腔50打入压力较高的液压油对整个防水装置进行一次高压清洗，以带走沉积在液压管路、阀体及压力容腔50中的杂质，从而防止泵送 工作时，溢流元件的阀芯被杂质卡滞或者卡塞，导致溢流元件无法正常地开启或者关闭的问题。上述溢流元件指的是本申请中的溢流阀74。
实施例一：
控制压力容腔50与外界的导通或断开的方式有多种，如图2和图3所示，本申请的实施例一中，进液组件包括储油装置41、供液管路42和液控阀组44。其中，供液管路42，供液管路42的一端与进液孔14连通，供液管路42另一端与储油装置41连接；液控阀组44，液控阀组44设置在供液管路42上，用于调节供液管路42的供液压力；出液组件70包括回液管路72、溢流阀74和第二单向阀76，其中，回液管路72，回液管路72的一端与出液孔16连通，溢流阀74设置在回液管路72上。
上述设置中，通过液控阀组44对供液管路的供液压力进行调节，即进入进液孔14处的油压可调，这样可将较高压力的液压油打入压力容腔50内，使溢流阀74打开，产生溢流，从而对压力容腔50以及与其相连通的液压管道和阀体进行清洗，从而确保压力容腔50始终建立有密封油压，使得密封组件30能够正常地工作，避免了因活塞杆的密封失效而导致活塞杆20将外部的水分带入防水装置内部的液压油中，导致液压油乳化的问题，进而确保泵送工作能够正常地进行。
如图2和图3所示，在本申请的实施例一中，液控阀组44包括换向阀、连接管路442和第一减压阀444。其中，换向阀具有第一连接口4412、第二连接口4414和第三连接口4416，换向阀通过第一连接口4412和第二连接口4414连接在供液管路42上。连接管路442的一端与第三连接口4416连接，连接管路442的另一端与供液管路42相连接形成连接点60，连接点60位于换向阀和进液孔14之间。第一减压阀444设置在供液管路42上，第一减压阀444位于第二连接口4414和连接点60之间。
上述设置中，通过液控阀组44对供液管路的供液压力进行调节，即进入进液孔14处的油压可调，这样可将较高压力的液压油打入压力容腔50内，使溢流阀74打开，产生溢流，从而对压力容腔50以及与其相连通的液压管道和阀体进行清洗，从而确保压力容腔50始终建立有密封油压，使得密封组件30能够正常地工作，避免了因活塞杆20的密封失效而导致活塞杆20将外部的水 分带入防水装置内部的液压油中，导致液压油乳化的问题，进而确保泵送工作能够正常地进行。
如图2和图3所示，在本申请的实施例一中，液控阀组44还包括第二减压阀446，第二减压阀446设置在连接管路442上，第二减压阀446的预设压力值高于第一减压阀444的预设压力值。
上述设置中，通过对换向阀进行换向操作，使得液压油从第二减压阀446进入到压力容腔50内，此时液压油不经过第一减压阀444，这样可将较高压力的液压油打入压力容腔50内，使溢流阀74打开，产生溢流，从而对压力容腔50以及与其相连通的液压管道和阀体进行清洗，从而确保压力容腔始终建立有密封油压，使得密封组件30能够正常地工作，避免了因活塞杆的密封失效而导致活塞杆20将外部的水分带入防水装置内部的液压油中，导致液压油乳化的问题，进而确保泵送工作能够正常地进行。另外，设置第二减压阀446能够调节连接管路442的供液压力，能够有效避免连接管路442的供液压力过高而导致连接管路442损坏的问题，同时确保防水装置对压力容腔50以及与其相连通的液压管道和阀体具有较好的清洗效果。
需要说明的是，泵送系统正常作业时，防水装置正常工作，液压从第一减压阀444进入到压力容腔50内，第一减压阀444设定的压力值小于溢流阀74的溢流压力，这样确保压力容腔50能够保压，防水装置的密封组件30能够正常地密封活塞杆20，从而确保防水装置能够正常地工作。泵送系统正常作业前，需要对防水装置内部的压力容腔50以及与压力容腔50相连通的液压管路和阀体进行清洗，通过对换向阀进行换向操作，使得液压油从第二减压阀446进入到压力容腔50内，第二减压阀446设定的压力值高于溢流阀74的溢流压力，这样确保溢流阀74开启，沉积在压力容腔50内的油水混合物类杂质能够随油流从溢流阀74排出，从而实现防水装置的自清洗功能。
如图2和图3所示，在本申请的实施例一中，进液组件40还包括截止阀46、蓄能器48和第一单向阀49。其中，截止阀46设置在供液管路42上，截止阀46位于储油装置41与液控阀组44之间。蓄能器48设置在供液管路42上，蓄能器48位于储油装置41与截止阀46之间；第一单向阀49，第一单向阀49设置在供液管路42上，且位于液控阀组44与进液孔14之间，第一单向 阀49沿供液管路42的供液方向单向导通。
上述设置中，截止阀46具有截断油流的作用，可根据实际情况，开启或者关闭截止阀46，以连通或者关闭蓄能器48与换向阀，从而满足进液组件40的控制要求。蓄能器48能够为供液管路提供稳定的油压，当需要对压力容腔50以及与压力容腔50相连通的液压管路和阀体进行清洗时，蓄能器48为供液管路稳定地提供较高的油压，从而确保清洗工作能够正常地进行，进而确保泵送工作能够正常地进行。另外，第一单向阀49具有单向流通功能，这样使得供液管路中的液压油只能朝供液方向进行流动，避免了回液管路中的液压油回流到供液管路内而影响进液组件40的正常工作。
如图2和图3所示，在本申请的实施例一中，出液组件70包括回液管路72、溢流阀74和第二单向阀76。其中，回液管路72，回液管路72的一端与出液孔16连通。溢流阀74设置在回液管路72上，溢流阀74的预设压力值低于进液组件40的第二减压阀446的预设压力值，且高于进液组件40的第一减压阀444的预设压力值。第二单向阀76设置在回液管路72上，且位于出液孔16和溢流阀74之间，第二单向阀76沿回液管路72的回液方向单向导通。
上述设置中，第二单向阀76具有单向流通功能，这样使得回液管路中的液压油只能朝回油方向进行流动，防止外部的杂质在溢流阀卡滞或者卡塞时逆向进入压力容腔50内而影响出液组件的正常工作，进而确保防水装置能够正常地工作。将溢流阀74的预设压力值设置成低于第二减压阀446的预设压力值，这样在冲洗作业时，溢流阀74会溢流，从而确保防水装置对压力容腔50以及与其相连通的液压管道和阀体的清洗效果。将溢流阀74的预设压力值设置成高于第一减压阀444的预设压力值，这样在泵送作业时，溢流阀74不会溢流，从而确保防水装置能够正常地工作。
需要说明的是，储油装置41内存储有较高压力的液压油，储油装置41和蓄能器48内液压油的油压高于第一减压阀444、第二减压阀446预设的压力以及溢流阀74的溢流压力。
具体地，如图2所示，在本申请的实施例一中，换向阀采用电磁换向阀4411。上述设置中，电磁换向阀4411是电控领域通用的执行电器件，具有结构简单、可靠性高且性价比高的特点，这样便于换向阀后期的更换和维护，从 而降低了防水装置的制造和维护成本。
具体地，如图2和图3所示，在本申请的实施例一中，密封组件30包括两个相对设置的唇形密封圈32，进液孔14和出液孔16位于两个唇形密封圈32之间。
上述设置中，唇形密封圈32在油压的作用下，发生变形，唇形密封圈32的唇形部分张开，唇形密封圈32与活塞杆20的外周面和压盖10的内壁面过盈配合，这样唇形密封圈32与活塞杆20的外周面和压盖10的内壁面完全贴合，从而防止外部的水分进入到压盖10的内腔内，避免水分与内腔内的液压油混合而造成液压油乳化变质的问题，进而确保防水装置能够正常地工作。另外，将进液孔14设置在两个相对设置的唇形密封圈32之间，使得唇形密封圈32的唇形部分朝向液压油的流动方向，这样方便唇形部分能够快速地张开，从而确保密封组件30密封的稳定性和可靠性，进而确保防水装置能够正常地工作，将出液孔16设置在两个相对设置的唇形密封圈32之间，便于压力容腔50的泄压以及油水混合物类杂质的排出。
具体地，如图2和图3所示，在本申请的实施例一中，密封组件30包括两个防尘圈34，两个唇形密封圈32设置在两个防尘圈34之间。上述设置中，防尘圈34能够防止外界污染物进入到压盖10的内腔内污染液压油，从而确保防水装置能够正常地工作。
下面描述一下实施例一中的防水装置的工作过程：
泵送作业前，选择清洗模式，电磁换向阀4411得电，第二减压阀446接入油路，较高压力的液压油经第二减压阀446进入压力容腔50，因第二减压阀446设定压力高于溢流阀74的溢流压力，溢流阀74开启，压力容腔50内沉积的油水混合物类杂质直接通过溢流阀74进行溢流，这样对压力容腔50以及与压力容腔50相连通的液压管路和阀体起到清洗作业。
泵送作业时，切换泵送模式，电磁换向阀4411失电，第一减压阀444接入油路，较高压力的液压油经第一减压阀444进入压力容腔50，因第一减压阀444设定压力小于溢流阀74的溢流压力，溢流阀74暂时关闭，活塞杆20往复运动时，压力容腔50的压力在唇形密封圈32的刮油作用下会缓慢升高，达到溢流压力时溢流阀74再打开溢流。
实施例二：
实施例二与实施例一的区别如下：
具体地，如图4所示，在本申请的实施例二中，换向阀采用零泄漏电磁换向阀4413。
上述设置中，零泄漏电磁换向阀4413具有结构简单、可靠性高且性价比高的特点的同时，还具有较强的防泄漏功能，即零泄漏电磁换向阀4413相对于传统的电磁换向阀，设置有两个单向阀，这样确保零泄漏电磁换向阀中的液压油只能朝预设的方向流动，进而确保零泄漏电磁换向阀4413工作的可靠性和稳定性。
实施例二与实施例一的其他结构相同，此处不再赘述。
实施例三：
实施例三与实施例一的区别如下：
如图5所示，在本申请的实施例三中，换向阀采用手动三通球阀4415。上述设置中，手动三通球阀4415具有结构简单和性价比高的特点的同时，还具有较高的可靠性，即相对于电磁换向阀，可直接对手动三通球阀4415进行手动换向，无需通过电路控制，这样手动三通球阀4415的可靠性更高。
实施例三与实施例一的其他结构相同，此处不再赘述。
实施例四：
实施例四与实施例一的区别如下：
如图6所示，在本申请的实施例四中，液控阀组44包括先导式减压阀449，先导式减压阀449设置在供液管路42上。
上述设置中，液压油通过先导式减压阀449打入压力容腔50，以对压力容腔50以及与其相连通的液压管道和阀体进行清洗，从而确保压力容腔50始终建立有密封油压，使得密封组件30能够正常地工作，避免了因活塞杆20的密封失效而导致活塞杆20将外部的水分带入防水装置内部的液压油中，导致液压油乳化的问题，进而确保泵送工作能够正常地进行。
需要说明的是，先导式减压阀449具有控制油路K，通过控制油路K可以设定先导式减压阀449的压力。泵送作业时，将先导式减压阀449的压力设定为小于溢流阀74的溢流压力，清洗作业时将先导式减压阀449的压力设定 为高于溢流阀74的溢流压力。这样利用控制油路K设定先导式减压阀449的压力，从而实现了防水装置的自清洗功能。
实施例四与实施例一的其他结构相同，此处不再赘述。
实施例五：
实施例五与实施例一的区别如下：
如图7所示，在本申请的实施例五中，液控阀组44不包括第二减压阀446。
实施例五与实施例一的其他结构相同，此处不再赘述。
实施例六：
实施例六与实施例一的区别如下：
如图8所示，在本申请的实施例六中，液控阀组44包括第一减压阀444、通断阀448和连接管路442。第一减压阀444设置在供液管路42上。通断阀448设置连接管路442上，通断阀448通过连接管路442与第一减压阀444并联连接在供液管路42上。
上述设置中，通过对通断阀448进行操作，使得液压油从连接管路进入到压力容腔50内，此时液压油不经过第一减压阀444，这样可将较高压力的液压油打入压力容腔50内，对压力容腔50以及与其相连通的液压管道和阀体进行清洗，从而确保压力容腔50始终建立有密封油压，使得密封组件30能够正常地工作，避免了因活塞杆20的密封失效而导致活塞杆20将外部的水分带入防水装置内部的液压油中，导致液压油乳化的问题，进而确保泵送工作能够正常地进行。
本申请中的防水装置具有以下优点：
1、采用换向阀实现了油路切换，换向方便。
2、带清洗功能，能将沉积杂质利用高压油冲走，提高液压系统的清洁度。
3、有效地防止溢流阀74的阀芯卡滞，提高了防水装置工作的可靠性，降低了因阀芯卡塞而引发的液压油泄漏和乳化发生的概率。
4、增加第二单向阀76，能防止洗涤室中的杂质在溢流阀74卡滞或者卡塞时逆向进入压力容腔
5、可根据实际需要设定先导式减压阀449的压力，或者设定第一减压阀444和第二减压阀446的压力，以实现清洗模式与泵送模式的切换。
本申请还提供了一种泵送系统，泵送系统包括：输送缸；主油缸，主油缸上设置有如第一方面技术方案中任一项的用于油缸的防水装置；其中，主油缸的活塞杆与输送缸的活塞杆连接，用于够带动输送缸内的活塞杆20运动，防水装置设置于主油缸上靠近输送缸的一端。
上述设置中，由于泵送系统包括防水装置，这样使得本申请中的泵送系统具有对压力容腔50以及与压力容腔50相连通的液压管路和阀体进行清洗的功能，避免了现有技术中因活塞杆20的密封失效而导致活塞杆20将外部的水分带入防水装置内部的液压油中，导致液压油乳化的问题，进而确保泵送工作能够正常地进行。
本申请第二方面的技术方案提供的泵送系统，因包括第一方面实施例中任一项的防水装置，因而具有上述任一实施例所具有的一切有益效果，在此不再赘述。
本申请还提供了一种泵送机械，包括第一方面实施例中任一项的防水装置，或上述泵送系统。
上述设置中，由于泵送机械包括防水装置或者泵送系统，这样使得本申请中的泵送机械具有对压力容腔以及与压力容腔相连通的液压管路和阀体进行清洗的功能，避免了现有技术中因活塞杆的密封失效而导致活塞杆将外部的水分带入防水装置内部的液压油中，导致液压油乳化的问题，进而确保泵送工作能够正常地进行。
本申请还提供了一种清洗方法，用于泵送系统的自清洗，清洗方法利用上述的泵送机械进行清洗，清洗方法包括利用进液组件40对压力容腔50进行清洗的步骤S10。
具体地，在实施例一至三中的清洗的步骤S10包括：
S01：设定第二减压阀446的压力值；
S03：对换向阀进行通电；
S05：将液压油打入压力容腔50进行清洗；
S07：溢流阀74自动开启，进行溢流，将杂质排出。
具体地，在实施例四中的清洗的步骤S10包括：
S02：设定先导式减压阀449的压力值；
S04：将液压油打入压力容腔50进行清洗；
S06：溢流阀74自动开启，进行溢流，将杂质排出。
具体地，在实施例五中的清洗的步骤S10包括：
S11：对换向阀进行通电；
S13：将液压油打入压力容腔50进行清洗；
S15：溢流阀74自动开启，进行溢流，将杂质排出。
具体地，在实施例四中的清洗的步骤S10包括：
S12：开启通断阀448；
S14：将液压油打入压力容腔50进行清洗；
S16：溢流阀74自动开启，进行溢流，将杂质排出。
从以上的描述中，可以看出，由于进液组件40能够对压力容腔50以及与压力容腔50相连通的液压管路和阀体进行清洗。这样避免了现有技术中由于压力容腔50内的杂质堵塞出液组件70中的溢流元件而导致溢流元件无法正常地开启或者关闭的问题，从而确保压力容腔始终建立有密封油压，使得密封组件30能够正常地工作，避免了因活塞杆的密封失效而导致活塞杆将外部的水分带入防水装置内部的液压油中，导致液压油乳化的问题，进而确保泵送工作能够正常地进行。
在本申请中，术语“第一”、“第二”、“第三”仅用于描述的目的，而不能理解为指示或暗示相对重要性；术语“多个”则指两个或两个以上，除非另有明确的限定。术语“安装”、“相连”、“连接”、“固定”等术语均应做广义理解，例如，“连接”可以是固定连接，也可以是可拆卸连接，或一体地连接；“相连”可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
本申请的描述中，需要理解的是，术语“上”、“下”、“左”、“右”、“前”、“后”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或单元必须具有特定的方向、以特定的方位构造和操作，因此，不能理解为对本申请的限制。
在本说明书的描述中，术语“一个实施例”、“一些实施例”、“具体实施例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或特点包含于 本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或实例。而且，描述的具体特征、结构、材料或特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (11)

  1. 一种用于油缸的防水装置，所述油缸包括压盖(10)和穿设于所述压盖(10)内的活塞杆(20)，其中，所述防水装置包括：
    进液孔(14)，设置于所压盖(10)上；
    出液孔(16)，设置于所压盖(10)上，所述出液孔(16)与所述进液孔(14)错开布置；
    密封组件(30)，所述密封组件(30)设置于所述压盖(10)与所述活塞杆(20)之间；
    进液组件(40)，所述进液组件(40)与所述进液孔(14)连通；
    出液组件(70)，所述出液组件(70)与所述出液孔(16)连通；
    其中，所述密封组件(30)与所述压盖(10)、所述活塞杆(20)之间形成环形的压力容腔(50)，所述进液孔(14)和所述出液孔(16)均与所述压力容腔(50)连通，所述进液组件(40)用于为所述压力容腔(50)提供压力油，所述出液组件(70)用于控制所述压力容腔(50)与外界的导通或断开。
  2. 根据权利要求1所述的防水装置，其中，所述进液组件(40)包括：
    储油装置(41)；
    供液管路(42)，所述供液管路(42)的一端与所述进液孔(14)连通，所述供液管路(42)另一端与所述储油装置(41)连接；
    液控阀组(44)，所述液控阀组(44)设置在所述供液管路(42)上，用于调节所述供液管路(42)的供液压力。
  3. 根据权利要求2所述的防水装置，其中，所述液控阀组(44)包括：
    换向阀，所述换向阀具有第一连接口(4412)、第二连接口(4414)和第三连接口(4416)，所述换向阀通过所述第一连接口(4412)和所述第二连接口(4414)连接在所述供液管路(42)上；
    连接管路(442)，所述连接管路(442)的一端与所述第三连接口(4416)连接，所述连接管路(442)的另一端与所述供液管路(42)相连接形成连接点(60)，所述连接点(60)位于所述换向阀和所述进液孔(14)之间；
    第一减压阀(444)，所述第一减压阀(444)设置在所述供液管路(42)上，所述第一减压阀(444)位于所述第二连接口(4414)和所述连接点(60) 之间。
  4. 根据权利要求3所述的防水装置，其中，所述液控阀组(44)还包括第二减压阀(446)，所述第二减压阀(446)设置在所述连接管路(442)上，所述第二减压阀(446)的预设压力值高于所述第一减压阀(444)的预设压力值。
  5. 根据权利要求2所述的防水装置，其中，所述液控阀组(44)包括：
    第一减压阀(444)，所述第一减压阀(444)设置在所述供液管路(42)上；
    通断阀(448)和连接管路(442)，所述通断阀(448)设置所述连接管路(442)上，所述通断阀(448)通过所述连接管路(442)与所述第一减压阀(444)并联连接在所述供液管路(42)上；
    或者，所述液控阀组(44)包括先导式减压阀(449)，所述先导式减压阀(449)设置在所述供液管路(42)上。
  6. 根据权利要求2所述的防水装置，其中，所述进液组件(40)还包括：
    截止阀(46)，所述截止阀(46)设置在所述供液管路(42)上，所述截止阀(46)位于所述储油装置(41)与所述液控阀组(44)之间；
    蓄能器(48)，所述蓄能器(48)设置在所述供液管路(42)上，所述蓄能器(48)位于所述储油装置(41)与所述截止阀(46)之间；
    第一单向阀(49)，所述第一单向阀(49)设置在所述供液管路(42)上，且位于所述液控阀组(44)与所述进液孔(14)之间，所述第一单向阀(49)沿所述供液管路(42)的供液方向单向导通。
  7. 根据权利要求1至6中任一项所述的防水装置，其中，所述出液组件(70)包括：
    回液管路(72)，所述回液管路(72)的一端与所述出液孔(16)连通；
    溢流阀(74)，所述溢流阀(74)设置在所述回液管路(72)上，所述溢流阀(74)的预设压力值低于所述进液组件(40)的第二减压阀(446)的预设压力值，且高于所述进液组件(40)的第一减压阀(444)的预设压力值；
    第二单向阀(76)，所述第二单向阀(76)设置在所述回液管路(72)上，且位于所述出液孔(16)和所述溢流阀(74)之间，所述第二单向阀(76)沿 所述回液管路(72)的回液方向单向导通。
  8. 根据权利要求3或4所述的防水装置，其中，所述换向阀为电磁换向阀(4411)或者零泄漏电磁换向阀(4413)或者手动三通球阀(4415)。
  9. 一种泵送系统，其中，所述泵送系统包括：
    输送缸；
    主油缸，所述主油缸上设置有如权利要求1至8中任一项所述的防水装置；
    其中，所述主油缸的活塞杆与所述输送缸的活塞杆连接，用于够带动所述输送缸内的活塞杆运动，所述防水装置设置于所述主油缸上靠近所述输送缸的一端。
  10. 一种泵送机械，其中，包括如权利要求1至8中任一项所述的防水装置，或包括权利要求9所述的泵送系统。
  11. 一种泵送机械的清洗方法，其中，所述清洗方法用于权利要求10所述的泵送机械，所述清洗方法包括：
    步骤S10，在所述泵送机械作业前，启动所述进液组件(40)为所述压力容腔(50)提供压力油，并控制所述出液组件(70)使所述压力容腔(50)与外界导通。
PCT/CN2021/102493 2020-09-30 2021-06-25 防水装置、泵送系统、泵送机械和清洗方法 WO2022068291A1 (zh)

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