CN114470879A - Gas-liquid-solid three-phase cyclone separation device with automatic exhaust valve and separation method thereof - Google Patents
Gas-liquid-solid three-phase cyclone separation device with automatic exhaust valve and separation method thereof Download PDFInfo
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- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 7
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- 239000012071 phase Substances 0.000 abstract description 25
- 239000012535 impurity Substances 0.000 abstract description 14
- 239000007790 solid phase Substances 0.000 abstract description 5
- 238000005191 phase separation Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 57
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0042—Degasification of liquids modifying the liquid flow
- B01D19/0052—Degasification of liquids modifying the liquid flow in rotating vessels, vessels containing movable parts or in which centrifugal movement is caused
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0031—Degasification of liquids by filtration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0042—Degasification of liquids modifying the liquid flow
- B01D19/0052—Degasification of liquids modifying the liquid flow in rotating vessels, vessels containing movable parts or in which centrifugal movement is caused
- B01D19/0057—Degasification of liquids modifying the liquid flow in rotating vessels, vessels containing movable parts or in which centrifugal movement is caused the centrifugal movement being caused by a vortex, e.g. using a cyclone, or by a tangential inlet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
- B01D36/045—Combination of filters with centrifugal separation devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/044—Removal or measurement of undissolved gas, e.g. de-aeration, venting or bleeding
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- Cyclones (AREA)
Abstract
The invention provides a gas-liquid-solid three-phase cyclone separation device with an automatic exhaust valve and a separation method thereof. The cyclone main body is subjected to cyclone action, gas-phase impurities enter the automatic exhaust valve to be discharged, and solid-phase impurities sink into the filtering filter element connected with the lower end of the cyclone main body to perform secondary filtration on oil. The invention discharges gas phase impurities in one way through the automatic exhaust valve, separates solid phase impurities, realizes three-phase separation, reduces the separation cost and improves the separation efficiency.
Description
Technical Field
The invention relates to the technical field of hydraulic oil liquid filtering equipment, in particular to a gas-liquid-solid three-phase cyclone separation device with an automatic exhaust valve and a separation method thereof.
Background
The hydraulic transmission is widely applied to the fields of engineering machinery, aerospace, mobile robots and the like; with the rapid development of the manufacturing industry in China, high pressure, high speed and high reliability become important trends of the development of hydraulic technology. Contamination of hydraulic oil is a major source of hydraulic system failure and can cause serious damage to hydraulic components and systems. At present, 75-90% of faults in a hydraulic system are caused by hydraulic oil pollution. In the operation process of a hydraulic system, the abrasion of components, the mixing of external pollutants and the gas separation under the pressure change are main sources of hydraulic oil pollution. Based on this, it is necessary to research the separation of gas and solid pollutants in oil.
In current hydraulic systems, filters are mainly used for contaminant separation. The existing filter device has the problems of large volume and heavy weight. The core element of the filter has short service life and is difficult to clean for recycling, which causes a certain waste of resources. Meanwhile, the existing filtering device does not have the gas removal function basically, and air mixed in oil easily enters a hydraulic system again through a filter element. In response to these problems, development and improvement of degassing and lightweight structures of the current filtering apparatus are indispensable.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a gas-liquid-solid three-phase cyclone separation device with an automatic exhaust valve and a method thereof, which can realize gas-liquid-solid three-phase cyclone separation through the automatic exhaust valve, a cyclone main body and a filtering filter element, can realize automatic exhaust, are beneficial to removing impurities in oil, reduce separation steps, save equipment cost and improve separation efficiency.
The invention provides a gas-liquid-solid three-phase cyclone separation device with an automatic exhaust valve, which comprises the automatic exhaust valve, an oil return flow dividing cavity, a cyclone main body and a filtering filter element, wherein the oil return flow dividing cavity is positioned at the lower end of the automatic exhaust valve, an upper top plate of a head part in the oil return flow dividing cavity is connected with the lower end of a lower shell of the exhaust valve in the automatic exhaust valve, the cyclone main body is positioned in the oil return flow dividing cavity, the upper end of a mixing cavity main body in the cyclone main body is connected with the upper top plate of the oil return flow dividing cavity, the filtering filter element is positioned at the lower end of the cyclone main body, and a conical flow guide pipe of the cyclone main body is connected with a one-way valve in the filtering filter element. Automatic exhaust valve, it includes casing, float and float end cover under tegillum, discharge valve upper cover, the discharge valve, the upper end of discharge valve upper cover with tegillum connects, changes automatic exhaust valve's exhaust pressure through adjusting tegillum, the lower extreme of discharge valve upper cover with the upper end fixed connection of casing under the discharge valve, the lower extreme interface of casing is the trapezium structure under the discharge valve, the upper end of float is equipped with the boss, the inside of float is equipped with the cavity, the boss with the inside second installation end of discharge valve upper cover is connected, the outer lane of float end cover is equipped with barb structure, the lower extreme of float with barb structure fixed connection. The oil return flow dividing cavity comprises an upper top plate, a head upper top plate, a first cylindrical cavity, a second cylindrical cavity, a head lower bottom plate and an oil return port flange, the upper end of the first cylindrical cavity is fixedly connected with the head upper top plate, the lower end of the first cylindrical cavity is fixedly connected with the head lower bottom plate, a first mounting end of the first cylindrical cavity is fixedly connected with a first mounting end of the second cylindrical cavity, a second mounting end of the second cylindrical cavity is fixedly connected with an oil return pipeline of a hydraulic system through the oil return port flange, a through hole is formed in the middle of the head upper top plate, and the through hole is fixedly connected with the upper top plate. The swirler main part, it includes water conservancy diversion mouth, hybrid chamber main part, oil tank flange, filter core switching flange and toper honeycomb duct, the upper end of hybrid chamber main part outer wall is equipped with the water conservancy diversion mouth, the cross-section of water conservancy diversion mouth is the rectangle, reduces the inside gas gathering of swirler main part and the formation of short circuit flow, the first installation end of hybrid chamber main part outer wall with oil tank flange fixed connection, the second installation end of hybrid chamber main part outer wall with the first installation end fixed connection of filter core switching flange, the inside lower extreme of hybrid chamber main part is equipped with the toper honeycomb duct. The filter element comprises a one-way valve and a filter element, an outer flange of the one-way valve is fixedly connected with a second mounting end of the filter element adapter flange, and the lower end of the one-way valve is fixedly connected with the upper end inside the filter element.
Preferably, the float is positioned inside the lower exhaust valve shell, the outer diameter of the float is larger than that of the float end cover, the outer diameter of the float is smaller than that of the inner diameter of the lower exhaust valve shell, and the outer ring of the float is uniformly provided with grooves along the radial direction.
It is preferable that axes of the small cap, the exhaust valve upper cap, the exhaust valve lower housing, the spring, the ball, the gasket, the float, and the float end cap are on the same straight line.
Preferably, the axes of the upper top plate, the head upper top plate, the first cylindrical cavity and the head lower bottom plate are on the same straight line.
Preferably, the axes of the mixing cavity main body, the oil tank connecting flange, the filter element adapter flange and the conical flow guide pipe are on the same straight line; the axes of the one-way valve and the filter element are on the same straight line.
Preferably, the taper of the tapered draft tube is a 60 ° taper angle.
Preferably, the installation axes of the conical flow guide pipe of the cyclone main body and the lower shell of the exhaust valve in the automatic exhaust valve are on the same straight line, so that gas gathering and central gas column formation are facilitated.
In a second aspect of the invention, a separation method of the gas-liquid-solid three-phase cyclone separation device with the automatic exhaust valve is provided, which comprises the following steps:
s1, sending oil mixed with gas and solid in a hydraulic system into an oil return flow cavity, and entering a cyclone main body from a flow guide port to form a cyclone with a certain tangential speed;
s2, gas separation: the solid is separated to the wall surface in the mixing cavity main body through the cyclone main body, and meanwhile, gas forms a gas column between the conical flow guide pipe and the lower shell of the exhaust valve and enters the automatic exhaust valve through the buoyancy;
s3, in the automatic exhaust valve, when the buoyancy of the floater reaches a certain value, the floater descends, and the gas pushes up the small ball and is exhausted through the gap between the spring and the small cover;
s4, liquid separation: after the gas is discharged in step S3, the float rises under the action of buoyancy, the boss on the upper surface of the float is attached to the lower surface of the upper cover of the exhaust valve, and at this time, the oil is separated through the flow guide port with the rectangular inlet;
s5, solid separation: and finally, under the action of the rotational flow of the cyclone main body, the solid descends along the wall surface of the mixing cavity main body and enters a dirt storage tank formed by the conical flow guide pipe and the mixing cavity main body.
Compared with the prior art, the invention has the following advantages:
1. the invention realizes the discharge of gas separated from oil from the system through the connection of the inner floater of the automatic exhaust valve, the sealing gasket, the upper cover of the exhaust valve, the steel ball and the spring.
2. According to the cyclone separator, the return oil flow is uniformly distributed to the two inlets of the cyclone main body through the return oil flow dividing cavity, so that the center of a cyclone flow field is favorably superposed with the axis of the cyclone main body, and the gas separation efficiency is improved.
3. According to the cyclone separator, the cyclone strength is improved, the axis of a flow field is stabilized, the integral separation is facilitated, the separation stability and efficiency are improved, and the rectangular inlet can reduce the bubble aggregation and the short-circuit flow formation at the top of the cyclone separator.
4. When the oil return flow is 250L/min, the invention can realize the separation of solid pollutants with the diameter of more than 30 mu m, the separation efficiency can reach more than 93 percent, and the gas removal efficiency can reach 89 percent.
5. The bottom of the cyclone separator is provided with the conical flow guide pipe, so that a ring groove for containing particles separated by cyclone is formed between the conical structure and the outer wall while the formation of a central gas column is facilitated; the check valve at the bottom of the cyclone main body provides back pressure for cyclone, and the separation efficiency of the cyclone can be improved.
6. The invention is beneficial to reducing the replacement frequency of the filtering equipment, reducing the loss of the hydraulic element, improving the separation efficiency and discharging certain mixed air from the system while reducing the separation cost, and has the advantages of simple structure, strong operability, high practicability and the like.
7. The conical guide pipe and the filter element are detachably connected through threads, the conical guide pipe and the filter element can be suitable for flow under various working conditions, the whole material has certain pressure resistance, and the conical guide pipe and the filter element are suitable for various oil tanks, wherein the conical structure and the filter element can be replaced to adapt to different oil conditions, the application field is widened, and the use cost is reduced.
Drawings
FIG. 1 is an overall structural view of a gas-liquid-solid three-phase cyclone separation device with an automatic exhaust valve and a method thereof;
FIG. 2 is an overall cross-sectional view of a gas-liquid-solid three-phase cyclonic separating apparatus and method of the present invention having an automatic vent valve;
FIG. 3 is a structural diagram of an automatic exhaust valve in the gas-liquid-solid three-phase cyclone separation device and method with the automatic exhaust valve according to the present invention;
FIG. 4 is a sectional view of an automatic vent valve in the gas-liquid-solid three-phase cyclone separation device and method with the automatic vent valve according to the present invention;
FIG. 5 is a structural diagram of an oil return flow cavity in the gas-liquid-solid three-phase cyclone separation device with an automatic exhaust valve and the method of the invention;
FIG. 6 is a sectional view of an oil return flow-dividing chamber in the gas-liquid-solid three-phase cyclone separation device and method with automatic exhaust valves according to the present invention;
FIG. 7 is a structural diagram of a cyclone main body in the gas-liquid-solid three-phase cyclone separation device with an automatic exhaust valve and the method of the invention;
FIG. 8 is a cross-sectional view of a cyclone body in the gas-liquid-solid three-phase cyclonic separating apparatus and method of the present invention having an automatic exhaust valve;
FIG. 9 is a structural diagram of a filter element in the gas-liquid-solid three-phase cyclone separation device with an automatic exhaust valve and the method thereof.
The main reference numbers:
the automatic exhaust valve comprises an automatic exhaust valve 1, a small cover 11, an exhaust valve upper cover 12, an exhaust valve lower shell 13, a spring 14, a small ball 15, a sealing gasket 16, a floater 17, a floater end cover 18, an oil return diversion cavity 2, an upper top plate 21, a head upper top plate 22, a first cylindrical cavity 23, a second cylindrical cavity 26, a head lower bottom plate 24, an oil return port flange 25, a cyclone body 3, a diversion port 31, a mixing cavity body 32, an oil tank connecting flange 33, a filter element adapter flange 34, a conical diversion pipe 35, a filtering filter element 4, a one-way valve 41 and a filter element 42.
Detailed Description
The technical contents, structural features, attained objects and effects of the present invention are explained in detail below with reference to the accompanying drawings.
As shown in figure 1 and combined figure 2, the gas-liquid-solid three-phase cyclone separation device with the automatic exhaust valve comprises the automatic exhaust valve 1, an oil return flow dividing cavity 2, a cyclone main body 3 and a filtering filter element 4, wherein the cyclone main body 3, the oil return flow dividing cavity 2 and the automatic exhaust valve 1 are made of high-strength aluminum so as to ensure corrosion resistance, oxidation resistance and light weight. The oil return flow dividing cavity 2 is positioned at the lower end of the automatic exhaust valve 1, an upper top plate 22 at the head part of the oil return flow dividing cavity 2 is connected with the lower end of the exhaust valve lower shell 13 of the automatic exhaust valve 1 through threads, the cyclone main body 3 is positioned in the oil return flow dividing cavity 2, the upper end of a mixing cavity main body 32 of the cyclone main body 3 is connected with an upper top plate 21 of the oil return flow dividing cavity 2, the filtering filter element 4 is positioned at the lower end of the cyclone main body 3, and a conical flow guide pipe 35 of the cyclone main body 3 is connected with a one-way valve 41 in the filtering filter element 4.
The top of the oil return flow cavity 2 is provided with an automatic exhaust valve 1, and unidirectional exhaust is realized through the connection of a floater 17, a small ball 15, a spring 14 and a small cover 11. The automatic exhaust valve 1 is connected with the oil return flow dividing cavity 2 through threads. The oil return flow dividing cavity 2 is internally provided with a cyclone main body 3, gas-phase impurities enter the automatic exhaust valve 1 to be discharged through the cyclone effect, and solid-phase impurities sink into a ring groove below the cyclone main body 3. The cyclone main body 3 is connected with a filter element 4 downwards for secondary filtration of oil. Through the automatic exhaust valve 1, gas phase impurities are discharged in a one-way mode, solid phase impurities can be separated, three-phase separation is achieved, separation cost is reduced, and separation efficiency is improved.
The automatic exhaust valve 1, as shown in fig. 3 and 4, comprises a small cover 11, an exhaust valve upper cover 12, an exhaust valve lower shell 13, a spring 14, a small ball 15, a sealing gasket 16, a floater 17 and a floater end cover 18, wherein before the gas is exhausted, the floater 17 is propped against the bottom of the exhaust valve upper cover 12 under the action of buoyancy, the sealing gasket 16 is compressed to realize sealing, and when the gas gathers at the upper part of the automatic exhaust valve 1, the floater 17 descends to realize exhaust.
The upper end of the exhaust valve upper cover 12 is connected with the small cover 11 through threads, the exhaust pressure of the automatic exhaust valve 1 is changed by adjusting the small cover 11, the lower end of the exhaust valve upper cover 12 is fixedly connected with the upper end of the exhaust valve lower shell 13 through threads, the lower end interface of the exhaust valve lower shell 13 is of a trapezoidal structure, the first end of the spring 14 is located at the center inside the small cover 11, the first end of the spring 14 is fixedly connected with the center inside the small cover 11, the second end of the spring 14 and the small ball 15 are sequentially located at the first mounting end inside the exhaust valve upper cover 12 from top to bottom, the upper end of the floater 17 is provided with a boss, the inside of the floater 17 is provided with a cavity, the boss is connected with the second mounting end inside the exhaust valve upper cover 12 through a sealing gasket 16, the outer ring of the floater end cover 18 is uniformly provided with four barb structures, and the lower end of the floater 17 is fixedly connected with the barb structures through buckles.
Specifically, the material of the float 17 should be light material such as nylon, and the average density should be reduced by providing an internal cavity, the float 17 is located inside the exhaust valve lower casing 13, the outer diameter of the float 17 is greater than the outer diameter of the float end cover 18, further, in order to ensure that the float 17 can slide smoothly inside the exhaust valve lower casing 13, the outer diameter of the float 17 is 1mm smaller than the inner diameter of the exhaust valve lower casing 13, the outer ring of the float 17 is uniformly provided with grooves along the radial direction, and the outer ring of the float 17 is attached to the inner wall of the exhaust valve lower casing 13. The axes of the small cover 11, the exhaust valve upper cover 12, the exhaust valve lower shell 13, the spring 14, the small ball 15, the sealing gasket 16, the floater 17 and the floater end cover 18 are on the same straight line.
The oil return flow dividing cavity 2 can uniformly distribute the oil return flow to inlets of the flow guide openings 31 in the two cyclone main bodies 3, so that the centers of the cyclone flow fields are superposed with the axis of the cyclone main bodies 3, and the gas separation efficiency is improved. As shown in fig. 5 and 6, the hydraulic cylinder comprises an upper top plate 21, a head upper top plate 22, a first cylindrical cavity 23, a second cylindrical cavity 26, a head lower bottom plate 24 and an oil return flange 25, wherein the upper end of the first cylindrical cavity 23 is fixedly connected with the head upper top plate 22 through welding, the lower end of the first cylindrical cavity 23 is fixedly connected with the head lower bottom plate 24 through welding, a first mounting end of the first cylindrical cavity 23 is fixedly connected with a first mounting end of the second cylindrical cavity 26, a second mounting end of the second cylindrical cavity 26 is fixedly connected with an oil return pipeline of a hydraulic system through the oil return flange 25, a through hole is formed in the middle of the head upper top plate 23, and the through hole is fixedly connected with the upper top plate 21.
Specifically, the axes of the upper top plate 21, the head upper top plate 22, the first cylindrical cavity 23, and the head lower plate 24 are on the same straight line.
The cyclone body 3, as shown in fig. 7 and 8, comprises a diversion opening 31, a mixing chamber body 32, the oil tank connecting flange plate 33, the filter element adapter flange 34 and the conical guide pipe 35 are arranged, the upper end of the outer wall of the mixing cavity main body 32 is provided with a guide opening 31, the section of the guide opening 31 is rectangular, the cyclone main body 3 adopts the double-rectangular guide opening 31 as an inlet to realize tangential inflow of oil, so that the formation of rotational flow is facilitated, the gas gathering inside the cyclone main body 3 and the formation of short-circuit flow are reduced, the first mounting end of the outer wall of the mixing cavity main body 32 is fixedly connected with the oil tank connecting flange plate 33 through welding, the second mounting end of the outer wall of the mixing cavity main body 32 is fixedly connected with the first mounting end of the filter element adapter flange 34, and the lower end face of the mixing cavity main body 32, the upper end face of the filter element adapter flange 32 and the outer side face of the conical guide pipe 35 form a dirt storage groove, so that the deposition of solid pollutants is facilitated; the lower end of the interior of the mixing chamber main body 32 is provided with a conical draft tube 35.
Specifically, the axes of the mixing cavity main body 32, the oil tank connecting flange 33, the filter element adapter flange 34 and the conical flow guide pipe 35 are on the same straight line; the axes of the one-way valve and the filter element are on the same straight line, in a preferred embodiment of the invention, the diameter of the cyclone main body 3 is 90mm, the taper of the tapered guide pipe 35 adopts a 60-degree taper angle, and the threaded connection is adopted to facilitate replacement. The installation axis of the conical guide pipe 35 of the cyclone main body 3 and the lower exhaust valve shell 13 of the automatic exhaust valve 1 is required to be on the same straight line, which is beneficial to the formation of gas gathering and central gas column and improves the initial efficiency.
The filtering core 4, as shown in fig. 9, includes a check valve 41 and a filter core 42, the check valve 41 can provide back pressure for the cyclone main body 3 to improve the cyclone separation efficiency, the check valve 41 is located in the center of the cavity of the filter core 42, the outer flange of the check valve 41 is fixedly connected with the second mounting end of the filter core adapter flange 34 through a filter core bolt, and the lower end of the check valve 41 is fixedly connected with the upper end inside the filter core 42.
The gas-liquid-solid three-phase cyclone separation device and method with the automatic exhaust valve of the invention are further described by combining the following embodiments:
the specific working process of the device is realized as follows:
firstly, when a hydraulic system starts to work, oil mixed with gas and solid impurities in the hydraulic system enters an oil return flow dividing cavity 2 of the device, enters a cyclone main body 3 from two flow guide ports 31, and forms a cyclone through a certain tangential speed.
Then, the cyclone main body 3 separates the particles with larger density and hydraulic oil to the vicinity of the wall surface in the mixing chamber main body 32 by the cyclone effect, and the mixed air in the oil is gathered at the center of the mixing chamber main body 32 under the cyclone effect to form an air column between the conical flow guide pipe 35 and the exhaust valve lower shell 13, and enters the automatic exhaust valve 1 by the buoyancy effect.
Because the gas entering the automatic exhaust valve 1 is gathered between the exhaust valve upper cover 12 and the floater 17 under the action of buoyancy, certain pressure is formed on the upper surface of the floater 17 at the moment, when the pressure reaches a certain value, the floater 17 begins to descend, and the gas pushes up the small ball 15 and is discharged through the gap between the spring 14 and the small cover 11, so that the gas separation effect in the hydraulic system is realized.
In the process, in order to ensure that only gas phase is discharged and liquid phase is not discharged, a one-way exhaust valve is additionally arranged on the upper section of the exhaust valve upper cover 12. A floater 17 is arranged in the exhaust valve, and the average density of the floater 17 is reduced by the design of a cavity arranged in the floater 17; after the gas phase is gathered, the upper end surface of the floater 17 is under the action of pressure, the integral buoyancy is reduced, the floater 17 sinks, the automatic exhaust valve 1 is opened, and the gas escapes.
Then after the gas is discharged, the liquid is discharged, at the moment, the floater 17 rises under the action of buoyancy, the boss on the upper surface is attached to the lower surface of the exhaust valve upper cover 12 to realize sealing, and the tangential speed plays an important role in the process of separating gas-solid impurities from hydraulic oil. In order to obtain higher tangential speed when oil enters the cyclone main body 3, the diversion port 31 with a rectangular inlet is adopted, the diameter of the lower exhaust valve shell 13 is properly increased, and the inlet area of the bottom surface of the lower exhaust valve shell 13 is increased by designing a chamfer, so that the influence of short-circuit flow at the lower section of the lower exhaust valve shell 13 on the separation efficiency is reduced.
And finally, solid is separated, because the conical guide pipe 35 is arranged at the bottom of the cyclone main body 3, when the cyclone is favorable for formation, a dirt storage groove for containing the particles separated by the cyclone is formed between the conical guide pipe 35 and the mixing cavity main body 32, solid impurities can descend along the wall surface of the mixing cavity main body 32 under the action of the cyclone and enter the dirt storage groove at the bottom, and therefore separation of gas, liquid and solid phases is realized. The remaining impurities not separated are subjected to a secondary filtration in the filter cartridge 42 below the cyclone body 3, thus guaranteeing the cleanliness of the oil at the final outlet.
Through the working process, unidirectional exhaust is realized through the automatic exhaust valve, higher initial efficiency can be realized, leakage of oil is avoided, and oil loss is reduced; meanwhile, solid impurities can fall along the wall surface to enter the bottom annular groove under the action of rotational flow, so that gas-liquid-solid three-phase separation is realized. The gas-liquid-solid three-phase cyclone separator with the automatic exhaust device improves the removal efficiency of oil pollutants, prolongs the service life of the filter element, realizes the separation of oil gas, and the internal conical guide pipe and the lower filter element are replaceable elements, so that the applicable working condition is widened, the use cost is saved, and the reliability of a hydraulic system is improved.
The above examples are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims (8)
1. A gas-liquid-solid three-phase cyclone separation device with an automatic exhaust valve comprises the automatic exhaust valve, an oil return flow dividing cavity, a cyclone main body and a filtering filter element, wherein the oil return flow dividing cavity is positioned at the lower end of the automatic exhaust valve, an upper top plate of a head part in the oil return flow dividing cavity is connected with the lower end of a lower shell of an exhaust valve in the automatic exhaust valve, the cyclone main body is positioned inside the oil return flow dividing cavity, the upper end of a mixing cavity main body in the cyclone main body is connected with the upper top plate of the oil return flow dividing cavity, the filtering filter element is positioned at the lower end of the cyclone main body, a conical flow guide pipe of the cyclone main body is connected with a one-way valve in the filtering filter element,
the automatic exhaust valve comprises a small cover, an exhaust valve upper cover, an exhaust valve lower shell, a floater and a floater end cover, wherein the upper end of the exhaust valve upper cover is connected with the small cover, the exhaust pressure of the automatic exhaust valve is changed by adjusting the small cover, the lower end of the exhaust valve upper cover is fixedly connected with the upper end of the exhaust valve lower shell, the lower end interface of the exhaust valve lower shell is of a trapezoidal structure, a boss is arranged at the upper end of the floater, a cavity is arranged in the floater, the boss is connected with a second mounting end in the exhaust valve upper cover, a barb structure is arranged on the outer ring of the floater end cover, and the lower end of the floater is fixedly connected with the barb structure;
the oil return flow dividing cavity comprises an upper top plate, a head upper top plate, a first cylindrical cavity, a second cylindrical cavity, a head lower bottom plate and an oil return port flange, the upper end of the first cylindrical cavity is fixedly connected with the head upper top plate, the lower end of the first cylindrical cavity is fixedly connected with the head lower bottom plate, a first mounting end of the first cylindrical cavity is fixedly connected with a first mounting end of the second cylindrical cavity, a second mounting end of the second cylindrical cavity is fixedly connected with an oil return pipeline of a hydraulic system through the oil return port flange, a through hole is formed in the middle of the head upper top plate, and the through hole is fixedly connected with the upper top plate;
the cyclone main body comprises a flow guide port, a mixing chamber main body, an oil tank connecting flange plate, a filter element adapter flange and a conical flow guide pipe, wherein the flow guide port is arranged at the upper end of the outer wall of the mixing chamber main body, the section of the flow guide port is rectangular, so that the gas aggregation and the short-circuit flow formation in the cyclone main body are reduced, the first mounting end of the outer wall of the mixing chamber main body is fixedly connected with the oil tank connecting flange plate, the second mounting end of the outer wall of the mixing chamber main body is fixedly connected with the first mounting end of the filter element adapter flange, and the conical flow guide pipe is arranged at the lower end in the mixing chamber main body; the filter element comprises a one-way valve and a filter element, the outer flange of the one-way valve is fixedly connected with the second mounting end of the filter element adapter flange, and the lower end of the one-way valve is fixedly connected with the upper end inside the filter element.
2. The gas-liquid-solid three-phase cyclone separation device with the automatic exhaust valve as claimed in claim 1, wherein the floater is positioned inside the lower exhaust valve shell, the outer diameter of the floater is larger than that of the end cover of the floater, the outer diameter of the floater is smaller than that of the inner diameter of the lower exhaust valve shell, and the outer ring of the floater is uniformly provided with grooves along the radial direction.
3. The gas-liquid-solid three-phase cyclone separation device with the automatic exhaust valve as claimed in claim 1 or 2, wherein in the automatic exhaust valve, a first end of a spring is positioned at the center of the inside of the small cover, a second end of the spring and a small ball are positioned at a first mounting end of the inside of the upper cover of the exhaust valve from top to bottom, and the axes of the small cover, the upper cover of the exhaust valve, the lower shell of the exhaust valve, the spring, the small ball, a sealing gasket, the floater and the end cover of the floater are on the same straight line.
4. The gas-liquid-solid three-phase cyclonic separating apparatus having an automatic exhaust valve as claimed in claim 1, wherein the axes of the upper top plate, the head upper top plate, the first cylindrical chamber and the head lower bottom plate are on the same straight line.
5. The gas-liquid-solid three-phase cyclone separation device with the automatic exhaust valve according to claim 1, wherein the axes of the mixing cavity main body, the oil tank connecting flange, the filter element adapter flange and the conical flow guide pipe are on the same straight line; the axes of the one-way valve and the filter element are on the same straight line.
6. Gas-liquid-solid three-phase cyclonic separating apparatus with automatic air vent valves as claimed in claim 1 or 5, wherein the taper of the tapered draft tube is a 60 ° taper angle.
7. The gas-liquid-solid three-phase cyclone separation device with the automatic exhaust valve as claimed in claim 1, wherein the conical flow guide pipe of the cyclone main body and the installation axis of the lower shell of the exhaust valve in the automatic exhaust valve are on the same straight line, so as to facilitate the formation of gas accumulation and a central gas column.
8. A separation method of a gas-liquid-solid three-phase cyclone separation device with an automatic exhaust valve according to any one of claims 1 to 7, characterized by comprising the following steps:
s1, sending oil mixed with gas and solid in a hydraulic system into an oil return flow cavity, and entering a cyclone main body from a flow guide port to form a cyclone with a certain tangential speed;
s2, gas separation: the solid is separated to the wall surface in the mixing cavity main body through the cyclone main body, and meanwhile, gas forms a gas column between the conical flow guide pipe and the lower shell of the exhaust valve and enters the automatic exhaust valve through the buoyancy;
s3, in the automatic exhaust valve, when the buoyancy of the floater reaches a certain value, the floater descends, and the gas pushes up the small ball and is exhausted through the gap between the spring and the small cover;
s4, liquid separation: after the gas is discharged in step S3, the float rises under the action of buoyancy, the boss on the upper surface of the float is attached to the lower surface of the upper cover of the exhaust valve, and at this time, the oil is separated through the flow guide port with the rectangular inlet;
s5, solid separation: and finally, under the action of the rotational flow of the cyclone main body, the solid descends along the wall surface of the mixing cavity main body and enters a dirt storage tank formed by the conical flow guide pipe and the mixing cavity main body.
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| CN202210200240.0A CN114470879A (en) | 2022-03-02 | 2022-03-02 | Gas-liquid-solid three-phase cyclone separation device with automatic exhaust valve and separation method thereof |
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| CN202210200240.0A CN114470879A (en) | 2022-03-02 | 2022-03-02 | Gas-liquid-solid three-phase cyclone separation device with automatic exhaust valve and separation method thereof |
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| CN111911487A (en) * | 2020-06-24 | 2020-11-10 | 燕山大学 | Exhaust valve |
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| JP2001020318A (en) * | 1999-07-08 | 2001-01-23 | Mitsubishi Heavy Ind Ltd | Waters purifying method and waters purifying system and dam soil discharging system |
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Application publication date: 20220513 |