CN105972296A - Main piston rod, air control valve and lubricating method for slide valve pair - Google Patents
Main piston rod, air control valve and lubricating method for slide valve pair Download PDFInfo
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- CN105972296A CN105972296A CN201610553440.9A CN201610553440A CN105972296A CN 105972296 A CN105972296 A CN 105972296A CN 201610553440 A CN201610553440 A CN 201610553440A CN 105972296 A CN105972296 A CN 105972296A
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- valve
- shrouding
- piston rod
- main piston
- hole
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
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- 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
Abstract
The invention discloses a main piston rod, an air control valve and a lubricating method for a slide valve pair. Compared with the prior art, a balance valve and a balance pipe are arranged on a main piston rod body, the upper end of the balance pipe is located above the lubricating oil liquid level, and the lower end of the balance pipe is communicated with a slide valve chamber through the balance valve. Accordingly, lubricating oil stored in a main piston can be delivered to all lubricating points, in the low pressure state or zero pressure state, caused by emergency braking or long-time vehicle stopping or air braking value storing and transporting after a test is completed, of the slide valve chamber, the pressure in an oil storage cavity is discharged in a delayed mode to achieve balance with that in the slide valve chamber, therefore, the problem that a large amount of the lubricating oil is drained through the lubricating points to cause the stored oil to be exhausted in a short time due to the fact that the pressure in the oil storage cavity is kept high and the pressure in the slide valve chamber is low or zero, and particularly on the condition that the plane of the slide valve pair is damaged is avoided, and then long-time continuous lubricating is achieved.
Description
Technical field
The present invention relates to valve body structure technical field, particularly relate to the lubricating method that a kind of main piston rod, air shut-off valve and guiding valve are secondary.
Background technology
The existing air shut-off valve with 120 valves as representative its crucial controlling organization guiding valve synetion lubrication in utilization cannot realize long continuous lubrication and occur that work surface damages, and affects stability.It also it is simultaneously one of air shut-off valve turn(a)round short major reason.
For the lubrication strategies that guiding valve in air shut-off valve is secondary, those skilled in the art are necessary further to be studied, the lubrication circumstances secondary to improve guiding valve.
Summary of the invention
The invention provides the lubricating method that a kind of main piston rod, air shut-off valve and guiding valve are secondary, for the problem solving the crucial controlling organization guiding valve pair insufficient lubrication in air shut-off valve set forth above.
The secondary lubricating method of a kind of main piston rod that the present invention provides, air shut-off valve and guiding valve solves problem by techniques below main points: a kind of main piston rod, including main piston rod body, it is provided with shoe cream room on described main piston rod body, also includes balanced valve and balance pipe；
Described balanced valve includes that valve seat and slide mass, described valve seat are tubular, and described slide mass is positioned at the hollow region of valve seat, and described slide mass can move along the length direction of valve seat；
The two ends of valve seat are provided with shrouding, two blocks of shroudings are respectively shrouding A and shrouding B, the through hole for fluid turnover hollow region it is provided with on two blocks of shroudings, and described slide mass is when moving to contact with shrouding A, described slide mass does not affect the medium negotiability of through hole on shrouding A, when described slide mass moves to contact with shrouding B, described slide mass makes the medium negotiability of through hole on shrouding B decline；
One end of described balance pipe is connected with through hole on shrouding A, and the other end of balance pipe becomes connected relation with shoe cream room, and the junction point of balance pipe and shoe cream room is positioned at the upside of shoe cream room.
Shoe cream room on main piston rod is arranged at the upper end of main piston rod, and shoe cream room is used for containing lubricating oil, and shoe cream room is connected by oil circuit with the work surface of guiding valve, and slide face and slide valve buckle laminating form guiding valve pair, and guiding valve pair is present in valve chamber.
In prior art, being not provided with special lubricating structure in conventional air shut-off valve, the lubricating oil being lubricated guiding valve pair is applied directly on work surface.Only by being attached to the oil lubrication of guiding valve minor face.So lubricating oil can not get sustainable supply, will be formed dry grinding by slow consumption, cause guiding valve pair the most impaired for a long time.
In this structure, being preferably arranged to described slide mass is steel ball, the upside of shoe cream room is communicated with valve chamber by balance pipe and balanced valve, on i.e. shrouding B, the outer end of through hole communicates with valve chamber, so, when valve chamber pressure increases, slide mass rolls to shrouding A with air-flow, air through hole on shrouding B enters in valve seat, then the through hole on shrouding A enters in balance pipe, makes the air pressure in described air chamber increase in entering finally into the air chamber in shoe cream room；Simultaneously, turn on bottom secondary, guiding valve and shoe cream room through guiding valve owing to valve chamber is intrinsic pressure, in the case of this, lubricating oil is only capable of flowing in guiding valve pair under deadweight, the lubricating oil viscosity i.e. used in view of air shut-off valve, now lubricating oil is unstable to guiding valve secondary flow, easily can not be met, by bubble interference, the lubrication needs that guiding valve is secondary.When valve chamber pressure reduces, slide mass is rushed at shrouding B by shoe cream room upper air, now, owing to slide mass makes the medium negotiability of through hole on shrouding B decline, the air on shoe cream room top releases lubricating oil, the lubricating oil more than released can be used for the lubrication that guiding valve is secondary, and reduction of shoe cream room upper air air pressure is provided through the mode of the slow pressure release of through hole on shrouding B during this, and during slow pressure release, lubricating oil can be entered in the oil circuit of guiding valve by the bottom of shoe cream room, lubricating oil is finally made to be pushed into guiding valve secondary, lubricating oil is applied in the purpose forming continuous oil film in guiding valve pair continuously, the pressure release mode using this case to provide not only achieves pressure and guiding valve pair is lubricated oil fuel feeding, shoe cream room air pressure can be discharged simultaneously and reach equal with valve chamber air pressure.Simultaneously in the balancing valve structure of this programme, the through hole on shrouding A and shrouding B is difficult to blocked.
I.e. this programme is operationally, and when air shut-off valve inflation is alleviated, valve chamber air pressure rises through balanced valve with the top of lubricating oil liquid level in balance pipe is directly entered shoe cream room of speed faster；When air shut-off valve pressure m, valve chamber pressure declines, and now the pressure air of lubricating oil ullage is discharged through the slow time delay of balanced valve while lubrication pressure is delivered to work surface, is finally down to the pressure identical with valve chamber, reaches new balance.I.e. achieve: avoiding tries hard to keep because shoe cream room is intrinsic pressure holds high pressure, and now valve chamber is in low pressure or zero-pressure and causes, in the case of particularly guiding valve pair plane has damage, lubricating oil is discharged in a large number through work surface, ultimately results in the problem that oil storage exhausted in the short time, thus realizes long lasting for lubrication.
With the implementation of upper sealing plate A for when slide mass rolls to shrouding A and contacts with shrouding A, slide mass does not block the circulation area of through hole on shrouding A；The implementation of shrouding B is any one in the following manner: when slide mass rolls to shrouding B and contacts with shrouding B, on slide mass blocking shrouding B on the part circulation area of through hole, slide mass blocking shrouding B after the part circulation area of through hole, immediately with on shrouding B through hole depart from, the slide mass short time blocking shrouding B on through hole all circulation areas after, depart from through hole on shrouding B immediately.
As those skilled in the art, above slide mass can also be set to the forms such as cylinder.Above balance pipe can use single pipeline or the form of intercommunicating pore being arranged on main piston rod body.
Further technical scheme is:
As a kind of integrated design scheme, described balance pipe and balanced valve may be contained within piston rod body.
The outside of described main piston rod body is provided with blind round hole, it is provided with female thread on described blind round hole, described valve seat is for being provided with externally threaded cylinder, described shrouding A is in the form of annular discs, and shrouding A is provided with multiple through hole, and valve seat is threadeded with blind round hole, shrouding A is goed deep into one end of blind round hole by valve seat and is pressed on the bottom of blind round hole, described shrouding B is in the form of annular discs, and the through hole on shrouding B is positioned at the center of shrouding B, and shrouding B is fixed on the end of valve seat；
Described balance pipe is the hole being arranged on main piston rod body, and the one end in described hole is positioned at the upside of shoe cream room, the other end in described hole and the bottom connection of blind round hole.
Above structure provides the specific implementation of balanced valve and balance pipe, after during i.e. valve seat is threadedly connected to described blind round hole, balanced valve is connected as a single entity with main piston rod body, balance pipe also is located on main piston rod body simultaneously, this main piston rod allowing for this case and providing has compact structure, it is simple to transform to obtain the structure that this case provides on existing air shut-off valve.
Shrouding A is goed deep into one end of blind round hole by valve seat and is pressed on the bottom of blind round hole, so, above balance pipe can be made up of two sections of connected straight lengths: one section of rear side being positioned at shrouding A therein, inwardly being drilled by the side of main piston rod body and form, another section is drilled downwards by the top of main piston rod body and forms.
Owing to the through hole on shrouding A is multiple, and the center of circle that multiple through hole is relative to shrouding A is the most uniform, this allows for shoe cream room hydraulic oil upper air when pressurising, as being set to 4/5ths of a diameter of valve seat barrel bore of slide mass, the center of circle of shrouding A is positioned on the axis of valve seat cylinder, when slide mass is rolled at shrouding A, slide mass does not contacts with through hole on shrouding A, and when can well realize above pressurising, slide mass does not affect the negotiability of through hole on shrouding A.
As being set to 4/5ths of a diameter of valve seat barrel bore of slide mass, the center of circle of shrouding B is positioned on the axis of valve seat cylinder, when shoe cream room hydraulic oil upper air release pressure, gas can make the through hole on slide mass partial occlusion shrouding B to the thrust of slide mass, the pressure air making shoe cream room slowly discharges, now lubrication pressure is delivered to work surface by the pressure air on shoe cream room top, it is achieved the normal continuous lubrication that guiding valve is secondary.
As those skilled in the art, with upper sealing plate B when using metallic plate, it is not necessary to process the end face of through hole on shrouding B to fit completely, so with the surface of slide mass, after can making the through hole on slide mass contact shrouding B, also can carry out pressure release by the through hole on shrouding B.
Use this structure, owing to being conveniently replaceable shrouding A, shrouding B and slide mass, i.e. for specific air shut-off valve, the specific lubricating oil of employing, when changing the slide mass of multi-form, shrouding A or shrouding B, all can meet optimal guiding valve pair lubricating requirement easily.
For ease of assembling and the manufacture of this structure, described shrouding B and valve seat are integral type structure.I.e. shrouding B and valve seat can pass through the manufacturing process such as overall processing, 3D printing, welding, strength and buckling, and both form an entirety.
For making slide mass under less thrust gas, can roll to shrouding A or shrouding B smoothly, the axis of described blind round hole is positioned at horizontal direction.
For ease of drilling balance pipe on main piston rod body, the upper end of described main piston rod body is further fixed on the end cap as shoe cream room top cover.Above fixed form can being the forms such as threaded, welding, clamping, but need to ensure that end cap is sealing surface with the combinatorial surface of main piston rod body, so, during as used threaded and clamping, can use the form of supporting sealing ring.
Simultaneously, the invention also discloses a kind of air shut-off valve, the graduating valve that the slide valve buckle that described air shut-off valve includes control valve valve body, be fixed on the control valve valve body guiding valve secondary with slide valve buckle composition guiding valve coordinates with guiding valve, also include the main piston rod that one scheme of any of the above provides, described main piston rod is used for driving guiding valve to slide, and the through hole described balanced valve being positioned on shrouding B communicates with the air chamber of valve chamber.Owing to this air shut-off valve have employed main piston rod as provided above, by the balanced valve on main piston rod, produce the lubricating system being different from prior art, the guiding valve pair that not only can make air shut-off valve can be forced by oil, and allow shoe cream room upper pressure air discharge through the slow time delay of balanced valve, finally it is down to the pressure identical with valve chamber.
Simultaneously, present invention also offers the lubricating method that a kind of guiding valve is secondary, for coordinating face to be lubricated guiding valve pair in air shut-off valve, this lubricating method is by the shoe cream room arranging upper end closed on the main piston rod body of air shut-off valve, lower end leads to guiding valve parafacies, and the liquid level of shoe cream room operationally lubricating oil is positioned at below the upper end of shoe cream room, obtain an air chamber with the top at shoe cream room；
And a balance pipe is set, one end of described balance pipe is connected with the upper end of shoe cream room, and the other end of balance pipe connects a balanced valve, and described balanced valve is as the air chamber of valve chamber and the communicating passage of air chamber on described shoe cream room；
Air chamber at valve chamber is intrinsic pressure when increasing, and described balanced valve is imported air by balance pipe air chamber on shoe cream room for realizing；
When valve chamber pressure declines, now the pressure air of lubricating oil ullage is discharged through balanced valve while lubrication pressure is delivered to work surface, is finally down to the pressure identical with valve chamber, reaches new balance.
Main piston rod that the present invention provides and the structure of air shut-off valve, it is intended to use the structure of a kind of optimization to improve the lubrication circumstances that the guiding valve of air shut-off valve is secondary, and when above structure realizes goal of the invention, depend on the lubricating method of the guiding valve pair that this case provides.
The method have the advantages that
The main piston rod that the present invention provides, it is different from prior art, the volume compressed in shoe cream room upper air and air pressure equal in the case of, the pressure release mode using this case to provide not only realizes guiding valve pair is lubricated oil fuel feeding, balance pipe can be passed through simultaneously, balanced valve makes oil storage cavity pressure equal with valve chamber air pressure, i.e. achieve: avoiding tries hard to keep because shoe cream room is intrinsic pressure holds high pressure, and now valve chamber is in low pressure or zero-pressure and causes, in the case of particularly guiding valve pair plane has damage, lubricating oil is discharged in a large number through work surface, ultimately result in the problem that oil storage exhausts in the short time, thus realize long lasting for lubrication.
Simultaneously, the invention also discloses a kind of air shut-off valve, owing to this air shut-off valve have employed main piston rod as provided above, by the balanced valve on main piston rod, produce the lubricating system being different from prior art, the guiding valve pair that not only can make air shut-off valve can be forced by oil, and allows shoe cream room upper pressure air discharge through the slow time delay of balanced valve, is finally down to the pressure identical with valve chamber.
Main piston rod that the present invention provides and the structure of air shut-off valve, it is intended to use the structure of a kind of optimization to improve the lubrication circumstances that the guiding valve of air shut-off valve is secondary, and when above structure realizes goal of the invention, depend on the lubricating method of the guiding valve pair that this case provides.
Accompanying drawing explanation
Fig. 1 is the installation diagram of one specific embodiment of a kind of air shut-off valve of the present invention；
Fig. 2 is the structure partial sectional view of one specific embodiment of a kind of main piston rod of the present invention.
Numbering in figure is followed successively by: 1, balance pipe, and 2, balanced valve, 3, shoe cream room, 4, main piston rod body, 5, shrouding A, 6, slide mass, 7, valve seat.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but the structure of the present invention is not limited only to following example.
Embodiment 1:
As depicted in figs. 1 and 2, a kind of main piston rod, including main piston rod body 4, described main piston rod body 4 is provided with shoe cream room 3, also includes balanced valve 2 and balance pipe 1；
Described balanced valve 2 includes valve seat 7 and slide mass 6, and described valve seat 7 is in tubular, and described slide mass 6 is positioned at the hollow region of valve seat 7, and described slide mass 6 can move along the length direction of valve seat 7；
The two ends of valve seat 7 are provided with shrouding, two blocks of shroudings are respectively shrouding A5 and shrouding B, the through hole for fluid turnover hollow region it is provided with on two blocks of shroudings, and described slide mass 6 is when moving to contact with shrouding A5, described slide mass 6 does not affect the medium negotiability of through hole on shrouding A5, when described slide mass 6 moves to contact with shrouding B, described slide mass 6 makes the medium negotiability of through hole on shrouding B decline；
One end of described balance pipe 1 is connected with through hole on shrouding A5, and the other end of balance pipe 1 becomes connected relation with shoe cream room 3, and the junction point of balance pipe 1 and shoe cream room 3 is positioned at the upside of shoe cream room 3.
Shoe cream room 3 on main piston rod is arranged at the upper end of main piston rod, and shoe cream room 3 is used for containing lubricating oil, and shoe cream room 3 is connected by oil circuit with the work surface of guiding valve, and slide face and slide valve buckle laminating form guiding valve pair, and guiding valve pair is present in valve chamber.
In prior art, being not provided with special lubricating structure in conventional air shut-off valve, the lubricating oil being lubricated guiding valve pair is applied directly on work surface.Only by being attached to the oil lubrication of guiding valve minor face.So lubricating oil can not get sustainable supply, will be formed dry grinding by slow consumption, cause guiding valve pair the most impaired for a long time.
In this structure, the upside of shoe cream room 3 is communicated with valve chamber by balance pipe 1 and balanced valve 2, on i.e. shrouding B, the outer end of through hole communicates with valve chamber, so, when air chamber pressure in the downside of gas compression face increases, slide mass 6 rolls to shrouding A5 with air-flow, and air through hole on shrouding B enters in valve seat 7, during through hole on shrouding A5 enters into balance pipe 1 again, the air pressure in described air chamber in entering finally into the air chamber in shoe cream room 3, is made to increase；Simultaneously as turn on bottom intrinsic pressure, the guiding valve secondary through guiding valve of valve chamber and shoe cream room 3.nullWhen valve chamber pressure reduces，Slide mass 6 is rushed at shrouding B by shoe cream room 3 upper air，Now，Owing to slide mass 6 makes the medium negotiability of through hole on shrouding B decline，The air on shoe cream room 3 top releases lubricating oil，The lubricating oil more than released can be used for the lubrication that guiding valve is secondary，And reduction of shoe cream room 3 upper air air pressure is provided through the mode of the slow pressure release of through hole on shrouding B during this，And during slow pressure release，Lubricating oil can be entered into by the bottom of shoe cream room in the oil circuit of guiding valve，Finally reach so that lubricating oil is pushed into guiding valve pair，Lubricating oil is applied in the purpose forming continuous oil film in guiding valve pair continuously，Not only reduce the maintenance frequency of air shut-off valve，Simultaneously in the case of air shut-off valve is not safeguarded，Can make guiding valve pair all can be by good lubrication within the longer time period，I.e. realize long lasting for lubrication.
I.e. this programme is operationally, and when air shut-off valve inflation is alleviated, valve chamber air pressure rises through balanced valve 2 with the top of lubricating oil liquid level in balance pipe 1 is directly entered shoe cream room 3 of speed faster；When air shut-off valve pressure m, valve chamber pressure declines, and now the pressure air of lubricating oil ullage is discharged through the slow time delay of balanced valve 2 while lubrication pressure is delivered to work surface, is finally down to the pressure identical with valve chamber, reaches new balance.I.e. achieve: avoid because intrinsic pressure the trying hard to keep of shoe cream room 3 holds high pressure, and now valve chamber is in low pressure or zero-pressure and causes, in the case of particularly guiding valve pair plane has damage, lubricating oil is discharged in a large number through work surface, ultimately results in the problem that oil storage exhausted in the short time, thus realizes long lasting for lubrication.
With the implementation of upper sealing plate A5 for when slide mass 6 rolls to shrouding A5 and contacts with shrouding A5, slide mass 6 does not block the circulation area of through hole on shrouding A5；The implementation of shrouding B is any one in the following manner: when slide mass 6 rolls to shrouding B and contacts with shrouding B, after slide mass 6 blocks the part circulation area of through hole on shrouding B, slide mass 6 blocks the part circulation area of through hole on shrouding B, immediately with on shrouding B through hole depart from, slide mass 6 short time blocking shrouding B on through hole all circulation areas after, depart from through hole on shrouding B immediately.
Embodiment 2:
As depicted in figs. 1 and 2, the present embodiment is further qualified on the basis of embodiment 1: the outside of described main piston rod body 4 is provided with blind round hole, it is provided with female thread on described blind round hole, described valve seat 7 is for being provided with externally threaded cylinder, described shrouding A5 is in the form of annular discs, multiple through hole it is provided with on shrouding A5, valve seat 7 is threadeded with blind round hole, shrouding A5 is goed deep into one end of blind round hole by valve seat 7 and is pressed on the bottom of blind round hole, described shrouding B is in the form of annular discs, through hole on shrouding B is positioned at the center of shrouding B, and shrouding B is fixed on the end of valve seat 7；
Described balance pipe 1 is the hole being arranged on main piston rod body 4, and the one end in described hole is positioned at the upside of shoe cream room 3, the other end in described hole and the bottom connection of blind round hole.
Above structure provides balanced valve 2 and the specific implementation of balance pipe 1, after during i.e. valve seat 7 is threadedly connected to described blind round hole, balanced valve 2 is connected as a single entity with main piston rod body 4, balance pipe 1 also is located on main piston rod body 4 simultaneously, this main piston rod allowing for this case and providing has compact structure, it is simple to transform to obtain the structure that this case provides on existing air shut-off valve.
Shrouding A5 is goed deep into one end of blind round hole by valve seat 7 and is pressed on the bottom of blind round hole, so, above balance pipe 1 can be made up of two sections of connected straight lengths: one section of rear side being positioned at shrouding A5 therein, inwardly being drilled by the side of main piston rod body 4 and form, another section is drilled downwards by the top of main piston rod body 4 and forms.
Owing to the through hole on shrouding A5 is multiple, and the center of circle that multiple through hole is relative to shrouding A5 is the most uniform, this allows for shoe cream room 3 hydraulic oil upper air when pressurising, as being set to 4/5ths of a diameter of valve seat 7 barrel bore of slide mass 6, the center of circle of shrouding A5 is positioned on the axis of valve seat 7 cylinder, when slide mass 6 is rolled at shrouding A5, slide mass 6 does not contacts with through hole on shrouding A5, and when can well realize above pressurising, slide mass 6 does not affect the negotiability of through hole on shrouding A5.
As being set to 4/5ths of a diameter of valve seat 7 barrel bore of slide mass 6, the center of circle of shrouding B is positioned on the axis of valve seat 7 cylinder, when shoe cream room 3 hydraulic oil upper air release pressure, gas can make the through hole on slide mass 6 partial occlusion shrouding B to the thrust of slide mass 6, the pressure air making shoe cream room 3 can slowly discharge, now lubrication pressure is delivered to work surface by the pressure air on shoe cream room 3 top, it is achieved the normal continuous lubrication that guiding valve is secondary.
As those skilled in the art, with upper sealing plate B when using metallic plate, it is not necessary to process the end face of through hole on shrouding B to fit completely, so with the surface of slide mass 6, after slide mass 6 can be made to embed the through hole on shrouding B, also can carry out pressure release by the through hole on shrouding B.
Use this structure, owing to being conveniently replaceable shrouding A5, shrouding B and slide mass 6, i.e. for specific air shut-off valve, the specific lubricating oil of employing, when changing the slide mass 6 of multi-form, shrouding A5 or shrouding B, optimal guiding valve pair lubricating requirement all can be met easily.
For ease of assembling and the manufacture of this structure, described shrouding B and valve seat 7 are integral type structure.I.e. shrouding B and valve seat 7 can form integral structure by casting.
For making slide mass 6 under less thrust gas, can roll to shrouding A5 or shrouding B smoothly, the axis of described blind round hole is positioned at horizontal direction.
For ease of drilling balance pipe 1 on main piston rod body 4, the upper end of described main piston rod body 4 is further fixed on the end cap as shoe cream room 3 top cover.
Embodiment 3:
This case is further qualified on the basis of any one technical scheme that one embodiment of any of the above provides by the present embodiment, as depicted in figs. 1 and 2, the present embodiment also discloses a kind of air shut-off valve, the graduating valve that the slide valve buckle that described air shut-off valve includes control valve valve body, be fixed on the control valve valve body guiding valve secondary with slide valve buckle composition guiding valve coordinates with guiding valve, also include the main piston rod that one scheme of any of the above provides, described main piston rod is used for driving guiding valve to slide, and the through hole that described balanced valve 2 is positioned on shrouding B communicates with the air chamber of valve chamber.Owing to this air shut-off valve have employed main piston rod as provided above, by the balanced valve 2 on main piston rod, produce the lubricating system being different from prior art, the guiding valve pair that not only can make air shut-off valve can be forced by oil, and allow shoe cream room upper pressure air discharge through the slow time delay of balanced valve, finally it is down to the pressure identical with valve chamber, i.e. achieve: avoiding tries hard to keep because shoe cream room is intrinsic pressure holds high pressure, and now valve chamber is in low pressure or zero-pressure and causes, in the case of particularly guiding valve pair plane has damage, lubricating oil is discharged in a large number through work surface, ultimately result in the problem that oil storage exhausts in the short time, thus realize long lasting for lubrication.
Embodiment 4:
Present embodiments provide the lubricating method that a kind of guiding valve is secondary, this lubricating method is for coordinating face to be lubricated guiding valve pair in air shut-off valve, this lubricating method is by the shoe cream room 3 arranging upper end closed on the main piston rod body 4 of air shut-off valve, lower end leads to guiding valve parafacies, and the liquid level of shoe cream room 3 operationally lubricating oil is positioned at below the upper end of shoe cream room 3, obtain an air chamber with the top at shoe cream room 3；
And a balance pipe 1 is set, one end of described balance pipe 1 is connected with the upper end of shoe cream room 3, and the other end of balance pipe 1 connects a balanced valve 2, and described balanced valve 2 is as the air chamber of valve chamber and the communicating passage of air chamber on described shoe cream room 3；
Air chamber at valve chamber is intrinsic pressure when increasing, and described balanced valve 2 is imported air by the balance pipe 1 air chamber on shoe cream room 3 for realizing；
When valve chamber pressure declines, now the pressure air of lubricating oil ullage is discharged through balanced valve 2 while lubrication pressure is delivered to work surface, is finally down to the pressure identical with valve chamber, reaches new balance.
Above content is to combine the further description that the present invention is made by concrete preferred implementation, it is impossible to assert that the detailed description of the invention of the present invention is confined to these explanations.For general technical staff of the technical field of the invention, other embodiments drawn under without departing from technical scheme, should be included in protection scope of the present invention.
Claims (8)
1. a main piston rod, including main piston rod body (4), described main piston rod body (4) is provided with shoe cream room (3), it is characterised in that also include balanced valve (2) and balance pipe (1)；
Described balanced valve (2) includes valve seat (7) and slide mass (6), and described valve seat (7) is in tubular, and described slide mass (6) is positioned at the hollow region of valve seat (7), and described slide mass (6) can move along the length direction of valve seat (7)；
The two ends of valve seat (7) are provided with shrouding, two blocks of shroudings are respectively shrouding A(5) and shrouding B, the through hole for fluid turnover hollow region it is provided with on two blocks of shroudings, and described slide mass (6) is moving to and shrouding A(5) when contacting, described slide mass (6) does not affect shrouding A(5) the medium negotiability of upper through hole, when described slide mass (6) moves to contact with shrouding B, described slide mass (6) makes the medium negotiability of through hole on shrouding B decline；
One end of described balance pipe (1) and shrouding A(5) upper through hole is connected, and the other end of balance pipe (1) becomes connected relation with shoe cream room (3), and the junction point of balance pipe (1) and shoe cream room (3) is positioned at the upside of shoe cream room (3).
A kind of main piston rod the most according to claim 1, it is characterised in that described balance pipe (1) and balanced valve (2) may be contained within piston rod body (4).
A kind of main piston rod the most according to claim 2, it is characterized in that, the outside of described main piston rod body (4) is provided with blind round hole, it is provided with female thread on described blind round hole, described valve seat (7) is for being provided with externally threaded cylinder, described shrouding A(5) in the form of annular discs, shrouding A(5) on be provided with multiple through hole, valve seat (7) is threadeded with blind round hole, shrouding A(5) goed deep into one end of blind round hole by valve seat (7) and be pressed on the bottom of blind round hole, described shrouding B is in the form of annular discs, through hole on shrouding B is positioned at the center of shrouding B, shrouding B is fixed on the end of valve seat (7)；
Described balance pipe (1) is for being arranged on the hole on main piston rod body (4), and the one end in described hole is positioned at the upside of shoe cream room (3), the other end in described hole and the bottom connection of blind round hole.
A kind of main piston rod the most according to claim 3, it is characterised in that described shrouding B and valve seat (7) are integral type structure.
A kind of main piston rod the most according to claim 3, it is characterised in that the axis of described blind round hole is positioned at horizontal direction.
A kind of main piston rod the most according to claim 3, it is characterised in that the upper end of described main piston rod body (4) is further fixed on the end cap as shoe cream room (3) top cover.
7. an air shut-off valve, the graduating valve coordinated with guiding valve including the guiding valve that control valve valve body, the slide valve buckle that is fixed on control valve valve body are secondary with slide valve buckle composition guiding valve, it is characterized in that, also include the main piston rod described in any one in claim 1 to 6, described main piston rod is used for driving guiding valve to slide, and the through hole that described balanced valve (2) is positioned on shrouding B communicates with the air chamber of valve chamber.
8. the lubricating method that a guiding valve is secondary, for coordinating face to be lubricated guiding valve pair in air shut-off valve, it is characterized in that, this lubricating method is by the shoe cream room (3) arranging upper end closed on the main piston rod body (4) of air shut-off valve, lower end leads to guiding valve parafacies, and the liquid level of shoe cream room (3) operationally lubricating oil is positioned at below the upper end of shoe cream room (3), obtain an air chamber with the top at shoe cream room (3)；
And a balance pipe (1) is set, one end of described balance pipe (1) is connected with the upper end of shoe cream room (3), the other end of balance pipe (1) connects a balanced valve (2), and described balanced valve (2) is as the communicating passage of the air chamber air chamber upper with described shoe cream room (3) of valve chamber；
Air chamber at valve chamber is intrinsic pressure when increasing, and described balanced valve (2) is imported air by the balance pipe (1) air chamber on shoe cream room (3) for realizing；
When valve chamber pressure declines, now the pressure air of lubricating oil ullage is discharged through balanced valve (2) while lubrication pressure is delivered to work surface, is finally down to the pressure identical with valve chamber, reaches new balance.
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| CN201610553440.9A CN105972296B (en) | 2016-07-14 | 2016-07-14 | A kind of lubricating method of main piston rod, air shut-off valve and guiding valve pair |
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| CN201610553440.9A CN105972296B (en) | 2016-07-14 | 2016-07-14 | A kind of lubricating method of main piston rod, air shut-off valve and guiding valve pair |
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| CN105972296A true CN105972296A (en) | 2016-09-28 |
| CN105972296B CN105972296B (en) | 2018-07-06 |
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| CN110805489A (en) * | 2019-11-07 | 2020-02-18 | 广西擎芯动力科技有限公司 | Ignition type in-cylinder direct injection heavy oil engine air pump integrated overflow pressure stabilizing valve |
| CN111229784A (en) * | 2020-03-02 | 2020-06-05 | 刘跃伟 | Forming process and forming equipment of biomass derived fuel (RDF) |
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| CN105972296B (en) | 2018-07-06 |
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