CN105972296B - A kind of lubricating method of main piston rod, air shut-off valve and guiding valve pair - Google Patents
A kind of lubricating method of main piston rod, air shut-off valve and guiding valve pair Download PDFInfo
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- CN105972296B CN105972296B CN201610553440.9A CN201610553440A CN105972296B CN 105972296 B CN105972296 B CN 105972296B CN 201610553440 A CN201610553440 A CN 201610553440A CN 105972296 B CN105972296 B CN 105972296B
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- valve
- sealing plate
- piston rod
- main piston
- shoe cream
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Pens And Brushes (AREA)
Abstract
The invention discloses the lubricating methods of a kind of main piston rod, air shut-off valve and guiding valve pair, it is different from the prior art, by balanced valve and balance pipe, described balance pipe the upper end being set to be on lubricating oil liquid level on main piston rod ontology, lower end is communicated by balanced valve with valve chamber.The present invention can be achieved to send the lubricating oil stored in main piston to each oil site, in emergency braking, vehicle is parked for a long time or air brake valve guiding valves chamber pressure such as storage and transportation after the completion of the experiment is low or zero pressure state under, discharge the pressure time delay in shoe cream room, reach balance with guiding valve chamber pressure, it avoids trying hard to keep because of shoe cream room internal pressure and holds high pressure, and valve chamber is in caused by low pressure or zero-pressure at this time, lubricating oil is largely discharged through oil site in the case that particularly guiding valve pair plane has damage, oil storage is eventually led to exhaust the short time the problem of, so as to fulfill long lasting for lubrication.
Description
Technical field
The present invention relates to valve body structure technical field, more particularly to a kind of main piston rod, air shut-off valve and guiding valve pair
Lubricating method.
Background technology
It is existing that using 120 valves as the air shut-off valve of representative, its crucial control mechanism guiding valve synetion lubrication can not be real in utilization
Now prolonged continuous lubrication and there is work surface damage, influence stability.Simultaneously and air shut-off valve turn(a)round, is short
One of the major reasons.
For the lubrication strategies of guiding valve pair in air shut-off valve, those skilled in the art are studied it is necessary to further,
To improve the lubrication circumstances of guiding valve pair.
Invention content
The present invention provides the lubricating method of a kind of main piston rod, air shut-off valve and guiding valve pair, for solving above-mentioned carry
The problem of crucial control mechanism guiding valve pair insufficient lubrication in the air shut-off valve gone out.
The lubricating method of a kind of main piston rod provided by the invention, air shut-off valve and guiding valve pair passes through following technical essential
To solve the problems, such as：A kind of main piston rod including main piston rod ontology, is provided with shoe cream room on the main piston rod ontology, also wraps
Include balanced valve and balance pipe；
The balanced valve includes valve seat and slide mass, and the valve seat is cylindrical in shape, and the slide mass is located at the hollow area of valve seat
In domain, the slide mass can be moved along the length direction of valve seat；
The both ends of valve seat are both provided with sealing plate, and two blocks of sealing plates are respectively sealing plate A and sealing plate B, are both provided on two blocks of sealing plates
For fluid disengaging hollow region through-hole, and the slide mass move to contacted with sealing plate A when, the slide mass does not influence
The flow of media ability of through-hole on sealing plate A, when the slide mass is moved to and contacted with sealing plate B, the slide mass makes on sealing plate B
The flow of media ability of through-hole declines；
One end of the balance pipe is connected with through-hole on sealing plate A, the other end of balance pipe with shoe cream room into connected relation, and
The tie point of balance pipe and shoe cream room is located at the upside of shoe cream room.
Shoe cream room on main piston rod is set to the upper end of main piston rod, shoe cream room for containing lubricating oil, shoe cream room with
The working face of guiding valve is connected by oil circuit, and slide face is bonded with slide valve buckle and to form guiding valve pair, and guiding valve pair is present in valve chamber.
In the prior art, special lubricating structure is not provided in conventional air shut-off valve, guiding valve pair is lubricated
Lubricating oil is applied directly on working face.Oil lubrication only by being attached to guiding valve minor face.Lubricating oil cannot continue in this way
Supply will form dry grinding by slow consumption for a long time, cause guiding valve secondary impaired too early.
In this structure, be preferably arranged to the slide mass as steel ball, the upside of shoe cream room by balance pipe and balanced valve with
Valve chamber communicates, i.e. the outer end of through-hole is communicated with valve chamber on sealing plate B, in this way, when guiding valve chamber pressure increases, slide mass is with gas
Flow roll is entered by the through-hole on sealing plate B in valve seat to sealing plate A, air, and balance pipe is entered using the through-hole on sealing plate A
In, the air pressure increase so that in the air chamber is entered finally into the air chamber in shoe cream room；Simultaneously as guiding valve intraventricular pressure
It is connected with shoe cream room bottom through guiding valve pair, guiding valve, in this case, lubricating oil is only capable of flowing into guiding valve pair under dead weight, that is, examines
Consider lubricating oil viscosity used by air shut-off valve, lubricating oil is unstable to guiding valve secondary flow at this time, is easily interfered by bubble
The lubrication needs of guiding valve pair cannot be met.When guiding valve chamber pressure reduces, slide mass is rushed at sealing plate B by shoe cream room upper air,
At this point, since slide mass declines the flow of media ability of through-hole on sealing plate B, the air on shoe cream room top releases lubricating oil, with
The lubricating oil of upper release can be used for the lubrication of guiding valve pair, and shoe cream room upper air air pressure reduction may be configured as passing through during this
The mode of the slow pressure release of through-hole on sealing plate B, and during slow pressure release, lubricating oil can enter cunning by the bottom of shoe cream room
In the oil circuit of valve, finally so that lubricating oil is pushed into guiding valve pair, lubricating oil is continuously applied in guiding valve pair and forms continuous oil film
Purpose, the pressure release mode provided using this case not only realized pressure and is lubricated oily fuel feeding to guiding valve pair, while can will
The discharge of shoe cream room air pressure reaches equal with valve chamber air pressure.Simultaneously in the balancing valve structure of this programme, sealing plate A and envelope
Through-hole on plate B is not easy to be blocked.
I.e. this programme at work, when air shut-off valve inflate alleviate when, valve chamber air pressure rise through balanced valve with
Faster speed is directly entered the top of lubricating oil liquid level in shoe cream room through balance pipe；It is sliding when air shut-off valve pressure m
Valve chamber pressure decline, at this time the pressure air on lubricating oil liquid level top while by lubricating oil force feed to working face through balanced valve
Slowly delay discharge, is finally down to the pressure identical with valve chamber, reaches new balance.Realize：It avoids because in shoe cream room
Pressure keeps high pressure, and valve chamber is in caused by low pressure or zero-pressure at this time, and particularly guiding valve pair plane has the situation of damage
Lower lubricating oil is largely discharged through working face, oil storage is eventually led to exhaust the short time the problem of, so as to fulfill long lasting for profit
It is sliding.
Using the realization method of upper sealing plate A as when slide mass rolls to sealing plate A and is contacted with sealing plate A, slide mass does not block envelope
The circulation area of through-hole on plate A；The realization method of sealing plate B is any one in the following manner：When slide mass rolls to sealing plate B simultaneously
When being contacted with sealing plate B, the part circulation area of through-hole, slide mass block the part of through-hole on sealing plate B on slide mass blocking sealing plate B
After circulation area, blocked on sealing plate B after all circulation areas of through-hole with through-hole disengaging, slide mass short time on sealing plate B immediately,
It is detached from immediately with through-hole on sealing plate B.
As those skilled in the art, more than slide mass can also be set as the forms such as cylinder.More than balance pipe can be used
The form of individual pipeline or the intercommunicating pore being set on main piston rod ontology.
Further technical solution is：
As a kind of integrated design scheme, the balance pipe and balanced valve may be contained in piston bar body.
Blind round hole is provided on the outside of the main piston rod ontology, internal thread is provided on the blind round hole, it is described
Valve seat is is provided with externally threaded cylinder, and the sealing plate A is in the form of annular discs, and multiple through-holes are provided on sealing plate A, and valve seat is blind with circle
Hole is threadedly coupled, and one end that sealing plate A is goed deep into blind round hole by valve seat is pressed on the bottom of blind round hole, and the sealing plate B is in the form of annular discs,
Through-hole on sealing plate B is located at the center of sealing plate B, and sealing plate B is fixed on the end of valve seat；
The balance pipe is the hole being arranged on main piston rod ontology, and the one end in the hole is located at the upside of shoe cream room,
The other end in the hole and the bottom connection of blind round hole.
More than structure provides the specific implementation of balanced valve and balance pipe, i.e. it is blind to be threadedly connected to the circle for valve seat
Kong Zhonghou, balanced valve are connected as a single entity with main piston rod ontology, while balance pipe also is located on main piston rod ontology, this allows for this
The main piston rod that case provides has compact structure, convenient for being transformed to obtain the knot of this case offer on existing air shut-off valve
Structure.
One end that sealing plate A is goed deep into blind round hole by valve seat is pressed on the bottom of blind round hole, in this way, Yi Shang balance pipe can be by two
The straight pipe of Duan Xianglian is formed：The one section therein rear side for being located at sealing plate A, inwardly drilled by the side of main piston rod ontology and
Into another section of top by main piston rod ontology drills downwards.
Since the through-hole on sealing plate A is multiple, and multiple through-holes are annularly uniformly distributed relative to the center of circle of sealing plate A, this just makes
Shoe cream room hydraulic oil upper air is obtained in pressurising, is such as set as 4/5ths of a diameter of valve seat barrel bore of slide mass,
The center of circle of sealing plate A is located on the axis of valve seat cylinder, and when slide mass is rolled at sealing plate A, slide mass does not connect with through-hole on sealing plate A
It touches, you can slide mass does not influence the negotiability of through-hole on sealing plate A during good realization more than pressurising.
4/5ths of a diameter of valve seat barrel bore of slide mass are such as set as, the center of circle of sealing plate B is located at valve seat cylinder
Axis on, when shoe cream room hydraulic oil upper air releases stress, gas may be such that slip body portion to the thrust of slide mass
Block the through-hole on sealing plate B so that the pressure air slow release of shoe cream room, the pressure air on shoe cream room top will lubrication at this time
Oil pressure send the normal continuous lubrication that guiding valve pair is realized to working face.
As those skilled in the art, with upper sealing plate B when using metallic plate, do not need to the end face of through-hole on sealing plate B
It processes to be bonded completely with the surface of slide mass, in this way, after may be such that the through-hole on slide mass contact sealing plate B, can also lead to
The through-hole crossed on sealing plate B carries out pressure release.
Using this structure, due to being conveniently replaceable sealing plate A, sealing plate B and slide mass, i.e., for specific air shut-off valve, adopt
Specific lubricating oil when replacing various forms of slide masses, sealing plate A or sealing plate B, can easily meet best guiding valve
Secondary lubricating requirement.
For ease of the assembling and manufacture of this structure, the sealing plate B is an integral structure with valve seat.I.e. sealing plate B and valve seat can
By manufacturing process such as overall processing, 3D printing, welding, strength and bucklings, the two forms an entirety.
To cause slide mass under smaller thrust gas, can smoothly be rolled to sealing plate A or sealing plate B, the circle
The axis of blind hole is located at horizontal direction.
For ease of drilling balance pipe on main piston rod ontology, the upper end of the main piston rod ontology is further fixed on as storage
The end cap of oil pocket head cover.More than fixed form can be the forms such as threaded connection, welding, clamping, but need to ensure end cap and master
The combinatorial surface of piston bar body is sealing surface, in this way, when being threadedly coupled and be clamped as used, the shape of mating sealing ring can be used
Formula.
Meanwhile the invention also discloses a kind of air shut-off valve, the air shut-off valve includes control valve body, is fixed on
The slide valve buckle on valve body, the graduating valve with the guiding valve of slide valve buckle composition guiding valve pair and guiding valve cooperation are controlled, further includes to take up an official post
The main piston rod that one scheme of meaning provides, the main piston rod are located on the balanced valve on sealing plate B for guiding valve to be driven to slide
Through-hole communicated with the air chamber of valve chamber.Since this air shut-off valve employs main piston rod as provided above, pass through main work
Balanced valve on stopper rod generates the lubricating system for being different from the prior art, not only may be such that the guiding valve pair of air shut-off valve can
It forces by oil, and shoe cream room upper pressure air is allowed slowly to be delayed through balanced valve discharge, be finally down to identical with valve chamber
Pressure.
Meanwhile the present invention also provides a kind of lubricating method of guiding valve pair, for coordinating guiding valve pair in air shut-off valve
Face is lubricated, and the lubricating method on the main piston rod ontology of air shut-off valve by setting upper end closed, lower end and guiding valve
The shoe cream room that pair communicates, and the liquid level of shoe cream room lubricating oil at work is located at the upper end of shoe cream room hereinafter, in shoe cream room
Top obtains an air chamber；
And a balance pipe is set, one end of the balance pipe is connected with the upper end of shoe cream room, and the other end of balance pipe connects
Connect a balanced valve, communicating passage of the balanced valve as the air chamber and air chamber on the shoe cream room of valve chamber；
In the air chamber internal pressure increase of valve chamber, the balanced valve is used to implement the air on shoe cream room from balance pipe
Chamber imports air；
When guiding valve chamber pressure declines, the pressure air on lubricating oil liquid level top is by lubricating oil force feed to working face at this time
It is discharged simultaneously through balanced valve, is finally down to the pressure identical with valve chamber, reaches new balance.
The structure of main piston rod and air shut-off valve provided by the invention, it is intended to using a kind of structural improvement air of optimization
The lubrication circumstances of the guiding valve pair of control valve, and during Yi Shang structure realization goal of the invention, the profit dependent on the guiding valve pair that this case provides
Sliding method.
The invention has the advantages that：
Main piston rod provided by the invention, is different from the prior art, gentle in the volume that shoe cream room upper air is compressed
Press it is equal in the case of, the pressure release mode provided using this case is not only realized and oily fuel feeding is lubricated to guiding valve pair, while can lead to
Overbalance pipe, balanced valve so that oil storage cavity pressure is equal with valve chamber air pressure, that is, realize：It avoids trying hard to keep because of shoe cream room internal pressure
High pressure is held, and valve chamber is in caused by low pressure or zero-pressure at this time, particularly guiding valve pair plane lubricates in the case of having damage
Oil is largely discharged through working face, oil storage is eventually led to exhaust the short time the problem of, so as to fulfill long lasting for lubrication.
Meanwhile the invention also discloses a kind of air shut-off valve, since this air shut-off valve employs master as provided above
Piston rod by the balanced valve on main piston rod, generates the lubricating system for being different from the prior art, not only may be such that air control
The guiding valve pair of valve can be forced by oil, and shoe cream room upper pressure air is allowed slowly to be delayed through balanced valve discharge, be finally down to
The pressure identical with valve chamber.
The structure of main piston rod and air shut-off valve provided by the invention, it is intended to using a kind of structural improvement air of optimization
The lubrication circumstances of the guiding valve pair of control valve, and during Yi Shang structure realization goal of the invention, the profit dependent on the guiding valve pair that this case provides
Sliding method.
Description of the drawings
Fig. 1 is a kind of installation diagram of one specific embodiment of air shut-off valve of the present invention；
Fig. 2 is a kind of structure partial sectional view of one specific embodiment of main piston rod of the present invention.
Number in figure is followed successively by：1st, balance pipe, 2, balanced valve, 3, shoe cream room, 4, main piston rod ontology, 5, sealing plate A, 6,
Slide mass, 7, valve seat.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but the present invention structure be not limited only to it is following
Embodiment.
Embodiment 1：
As depicted in figs. 1 and 2, a kind of main piston rod including main piston rod ontology 4, is set on the main piston rod ontology 4
There is shoe cream room 3, further include balanced valve 2 and balance pipe 1；
The balanced valve 2 includes valve seat 7 and slide mass 6, and the valve seat 7 is cylindrical in shape, and the slide mass 6 is located at valve seat 7
In hollow region, the slide mass 6 can be moved along the length direction of valve seat 7；
The both ends of valve seat 7 are both provided with sealing plate, and two blocks of sealing plates are respectively sealing plate A5 and sealing plate B, are respectively provided on two blocks of sealing plates
Be useful for fluid disengaging hollow region through-hole, and the slide mass 6 move to contacted with sealing plate A5 when, the slide mass 6
The flow of media ability of through-hole on sealing plate A5 is not influenced, when the slide mass 6 is moved to and is contacted with sealing plate B, the slide mass 6
Decline the flow of media ability of through-hole on sealing plate B；
One end of the balance pipe 1 is connected with through-hole on sealing plate A5, and the other end of balance pipe 1 and shoe cream room 3 are closed into connecting
System, and the tie point of balance pipe 1 and shoe cream room 3 is located at the upside of shoe cream room 3.
Shoe cream room 3 on main piston rod is set to the upper end of main piston rod, and shoe cream room 3 is used to contain lubricating oil, shoe cream room 3
It is connected with the working face of guiding valve by oil circuit, and slide face is bonded with slide valve buckle and to form guiding valve pair, guiding valve pair is present in valve chamber
In.
In the prior art, special lubricating structure is not provided in conventional air shut-off valve, guiding valve pair is lubricated
Lubricating oil is applied directly on working face.Oil lubrication only by being attached to guiding valve minor face.Lubricating oil cannot continue in this way
Supply will form dry grinding by slow consumption for a long time, cause guiding valve secondary impaired too early.
In this structure, the upside of shoe cream room 3 is communicated by balance pipe 1 and balanced valve 2 with valve chamber, i.e. through-hole on sealing plate B
Outer end communicated with valve chamber, in this way, the downside of gas compression face air cavity pressure increase when, slide mass 6 is rolled with air-flow
To sealing plate A5, air is entered by the through-hole on sealing plate B in valve seat 7, and balance pipe 1 is entered using the through-hole on sealing plate A5
In, the air pressure increase so that in the air chamber is entered finally into the air chamber in shoe cream room 3；Simultaneously as in valve chamber
Pressure is connected through guiding valve pair, guiding valve with 3 bottom of shoe cream room.When guiding valve chamber pressure reduces, 3 upper air of shoe cream room is by slide mass 6
Sealing plate B is rushed at, at this point, since slide mass 6 declines the flow of media ability of through-hole on sealing plate B, the air on 3 top of shoe cream room pushes away
Go out lubricating oil, the lubricating oil released above can be used for the lubrication of guiding valve pair, and 3 upper air air pressure of shoe cream room reduces during this
It may be configured as by way of the slow pressure release of through-hole on sealing plate B, and during slow pressure release, lubricating oil can be by shoe cream room
Bottom is entered in the oil circuit of guiding valve, is finally reached so that lubricating oil is pushed into guiding valve pair, lubricating oil is continuously applied to guiding valve
The purpose of continuous oil film is formed in pair, not only reduces the maintenance frequency of air shut-off valve, while air shut-off valve is not being tieed up
In the case of shield, it may be such that guiding valve pair can be realized by good lubrication long lasting for profit in longer time section
It is sliding.
I.e. this programme at work, when air shut-off valve inflate alleviate when, valve chamber air pressure rise through balanced valve 2 with
Faster speed is directly entered the top of lubricating oil liquid level in shoe cream room 3 through balance pipe 1；When air shut-off valve pressure m,
Guiding valve chamber pressure decline, at this time the pressure air on lubricating oil liquid level top while by lubricating oil force feed to working face through balance
The slowly delay discharge of valve 2, is finally down to the pressure identical with valve chamber, reaches new balance.Realize：It avoids because of shoe cream room
3 internal pressures, which are tried hard to keep, holds high pressure, and valve chamber is in caused by low pressure or zero-pressure at this time, and particularly guiding valve pair plane has the feelings of damage
Lubricating oil is largely discharged through working face under condition, eventually leads to oil storage exhaust the short time the problem of, so as to fulfill long lasting for
Lubrication.
Using the realization method of upper sealing plate A5 as when slide mass 6 rolls to sealing plate A5 and is contacted with sealing plate A5, slide mass 6 does not block up
Fill in the circulation area of through-hole on sealing plate A5；The realization method of sealing plate B is any one in the following manner：When slide mass 6 rolls to
Sealing plate B and when being contacted with sealing plate B, slide mass 6 block the part circulation area of the upper through-holes of sealing plate B, on the blocking sealing plate of slide mass 6 B
It after the part circulation area of through-hole, is detached from immediately with through-hole on sealing plate B, through-hole is all on 6 short time of slide mass blocking sealing plate B
After circulation area, it is detached from immediately with through-hole on sealing plate B.
Embodiment 2：
As depicted in figs. 1 and 2, the present embodiment is further qualified on the basis of embodiment 1：The main piston rod ontology
4 outside is provided with blind round hole, internal thread is provided on the blind round hole, the valve seat 7 is is provided with externally threaded circle
Cylinder, the sealing plate A5 is in the form of annular discs, and multiple through-holes are provided on sealing plate A5, and valve seat 7 is threadedly coupled with blind round hole, sealing plate A5 by
One end that valve seat 7 gos deep into blind round hole is pressed on the bottom of blind round hole, and the sealing plate B is in the form of annular discs, and the through-hole on sealing plate B is located at
The center of sealing plate B, sealing plate B are fixed on the end of valve seat 7；
The balance pipe 1 is the hole being arranged on main piston rod ontology 4, and the one end in the hole is located at the upper of shoe cream room 3
Side, the other end in the hole and the bottom connection of blind round hole.
More than structure provides the specific implementation of balanced valve 2 and balance pipe 1, i.e. valve seat 7 is threadedly connected to the circle
After in shape blind hole, balanced valve 2 is connected as a single entity with main piston rod ontology 4, while balance pipe 1 also is located on main piston rod ontology 4, this
The main piston rod for allowing for this case offer has compact structure, convenient for being transformed to obtain this case on existing air shut-off valve
The structure of offer.
One end that sealing plate A5 is goed deep into blind round hole by valve seat 7 is pressed on the bottom of blind round hole, in this way, Yi Shang balance pipe 1 can
It is made of two sections of connected straight pipes：The one section therein rear side for being located at sealing plate A5, is inwardly bored by the side of main piston rod ontology 4
It makes, another section of top by main piston rod ontology 4 drills downwards.
Since the through-hole on sealing plate A5 is multiple, and multiple through-holes are annularly uniformly distributed relative to the center of circle of sealing plate A5, this is just
So that 3 hydraulic oil upper air of shoe cream room in pressurising, is such as set as five points of 7 barrel bore of a diameter of valve seat of slide mass 6
Four, the center of circle of sealing plate A5 is located on the axis of 7 cylinder of valve seat, when slide mass 6 is rolled at sealing plate A5, slide mass 6 not with sealing plate
The upper through-hole contacts of A5, you can slide mass 6 does not influence the negotiability of through-hole on sealing plate A5 during good realization more than pressurising.
4/5ths of 7 barrel bore of a diameter of valve seat of slide mass 6 are such as set as, the center of circle of sealing plate B is located at valve seat 7 and justifies
On the axis of cylinder, when 3 hydraulic oil upper air of shoe cream room releases stress, gas may be such that slide mass 6 to the thrust of slide mass 6
Through-hole on partial occlusion sealing plate B so that the pressure air energy Enough slow releases of shoe cream room 3, the at this time pressure on 3 top of shoe cream room
Air lubricates lubricating oil force feed to working face, the normal continuous of realization guiding valve pair.
As those skilled in the art, with upper sealing plate B when using metallic plate, do not need to the end face of through-hole on sealing plate B
It processes to be bonded completely with the surface of slide mass 6, in this way, after may be such that the through-hole that slide mass 6 is embedded on sealing plate B, also can
Pressure release is carried out by the through-hole on sealing plate B.
Using this structure, due to being conveniently replaceable sealing plate A5, sealing plate B and slide mass 6, i.e., for specific air shut-off valve,
The specific lubricating oil used, when replacing various forms of slide masses 6, sealing plate A5 or sealing plate B, can easily meet best
Guiding valve pair lubricating requirement.
For ease of the assembling and manufacture of this structure, the sealing plate B is an integral structure with valve seat 7.That is sealing plate B and valve seat 7
Can integral structure be formed by casting.
To cause slide mass 6 under smaller thrust gas, can smoothly be rolled to sealing plate A5 or sealing plate B, the circle
The axis of shape blind hole is located at horizontal direction.
For ease of drilling balance pipe 1 on main piston rod ontology 4, the upper end of the main piston rod ontology 4 is further fixed on making
End cap for 3 head cover of shoe cream room.
Embodiment 3：
This case is made on the basis of any one technical solution that the present embodiment is provided in any of the above one embodiment into
One step limits, and as depicted in figs. 1 and 2, the present embodiment also discloses a kind of air shut-off valve, and the air shut-off valve includes control
Valve body, the slide valve buckle being fixed on control valve body, the restraining with the guiding valve of slide valve buckle composition guiding valve pair and guiding valve cooperation
Valve further includes the main piston rod that one scheme of any of the above provides, and the main piston rod is for driving guiding valve to slide, the balance
The through-hole being located on valve 2 on sealing plate B is communicated with the air chamber of valve chamber.Since this air shut-off valve employs master as provided above
Piston rod by the balanced valve 2 on main piston rod, generates the lubricating system for being different from the prior art, not only may be such that air control
The guiding valve pair of valve processed can be forced by oil, and shoe cream room upper pressure air is allowed slowly to be delayed through balanced valve discharge, most final decline
To the pressure identical with valve chamber, that is, realize：It avoids trying hard to keep because of shoe cream room internal pressure and holds high pressure, and valve chamber is in low pressure at this time
Or caused by zero-pressure, lubricating oil is largely discharged through working face in the case that particularly guiding valve pair plane has damage, is eventually led to
Oil storage is exhaust the problem of the short time, so as to fulfill long lasting for lubrication.
Embodiment 4：
A kind of lubricating method of guiding valve pair is present embodiments provided, which is used for guiding valve pair in air shut-off valve
Mating surface is lubricated, the lubricating method by the main piston rod ontology 4 of air shut-off valve set upper end closed, lower end with
The shoe cream room 3 that guiding valve pair communicates, and the liquid level of the lubricating oil at work of shoe cream room 3 is located at the upper end of shoe cream room 3 hereinafter, to store up
The top of oil pocket 3 obtains an air chamber；
And a balance pipe 1 is set, one end of the balance pipe 1 is connected with the upper end of shoe cream room 3, balance pipe 1 it is another
One balanced valve 2 of end connection, the balanced valve 2 lead to as the connection of the air chamber and air chamber on the shoe cream room 3 of valve chamber
Road；
In the air chamber internal pressure increase of valve chamber, the balanced valve 2 is used to implement from balance pipe 1 on shoe cream room 3
Air chamber imports air；
When guiding valve chamber pressure declines, the pressure air on lubricating oil liquid level top is by lubricating oil force feed to working face at this time
It is discharged simultaneously through balanced valve 2, is finally down to the pressure identical with valve chamber, reaches new balance.
The above content is combine specific preferred embodiment to the further description of the invention made, it is impossible to assert this
The specific embodiment of invention is confined to these explanations.For those of ordinary skill in the art to which the present invention belongs,
The other embodiment obtained in the case where not departing from technical scheme of the present invention, should be included within the scope of the present invention.
Claims (8)
1. a kind of main piston rod, including main piston rod ontology（4）, the main piston rod ontology（4）On be provided with shoe cream room（3）,
It is characterized in that, further include balanced valve（2）And balance pipe（1）；
The balanced valve（2）Including valve seat（7）And slide mass（6）, the valve seat（7）It is cylindrical in shape, the slide mass（6）Positioned at valve
Seat（7）Hollow region in, the slide mass（6）It can be along valve seat（7）Length direction movement；
Valve seat（7）Both ends be both provided with sealing plate, two blocks of sealing plates are respectively sealing plate A（5）And sealing plate B, it is respectively provided on two blocks of sealing plates
It is useful for the through-hole of fluid disengaging hollow region, and the slide mass（6）It is moving to and sealing plate A（5）During contact, the slip
Body（6）Sealing plate A is not influenced（5）The flow of media ability of upper through-hole, in the slide mass（6）It moves to when being contacted with sealing plate B, institute
State slide mass（6）Decline the flow of media ability of through-hole on sealing plate B；
The balance pipe（1）One end and sealing plate A（5）Upper through-hole is connected, balance pipe（1）The other end and shoe cream room（3）Cheng Lian
Clearance system, and balance pipe（1）With shoe cream room（3）Tie point be located at shoe cream room（3）Upside；
The slide mass（6）For steel ball or cylinder.
A kind of 2. main piston rod according to claim 1, which is characterized in that the balance pipe（1）And balanced valve（2）It is all provided with
It is placed in main piston rod ontology（4）On.
A kind of 3. main piston rod according to claim 2, which is characterized in that the main piston rod ontology（4）Outside set
Blind round hole is equipped with, internal thread, the valve seat are provided on the blind round hole（7）It is described to be provided with externally threaded cylinder
Sealing plate A（5）It is in the form of annular discs, sealing plate A（5）On be provided with multiple through-holes, valve seat（7）It is threadedly coupled with blind round hole, sealing plate A（5）
By valve seat（7）The one end for stretching into blind round hole is pressed on the bottom of blind round hole, and the sealing plate B is in the form of annular discs, the through-hole on sealing plate B
Positioned at the center of sealing plate B, sealing plate B is fixed on valve seat（7）End；
The balance pipe（1）To be arranged on main piston rod ontology（4）On hole, and the one end in the hole is located at shoe cream room（3）'s
Upside, the other end in the hole and the bottom connection of blind round hole.
4. a kind of main piston rod according to claim 3, which is characterized in that the sealing plate B and valve seat（7）For integral type knot
Structure.
5. a kind of main piston rod according to claim 3, which is characterized in that the axis of the blind round hole is located at level side
To.
A kind of 6. main piston rod according to claim 3, which is characterized in that the main piston rod ontology（4）Upper end also
It is fixed with as shoe cream room（3）The end cap of head cover.
7. a kind of air shut-off valve is slided including control valve body, the slide valve buckle being fixed on control valve body, with slide valve buckle composition
The guiding valve of valve pair, the graduating valve with guiding valve cooperation, which is characterized in that further include the master described in any one in claim 1 to 6
Piston rod, the main piston rod is for driving guiding valve to slide, the balanced valve（2）Upper through-hole and valve chamber on sealing plate B
Air chamber communicate.
8. a kind of lubricating method of guiding valve pair, for being lubricated to guiding valve pair mating surface in air shut-off valve, which is characterized in that
The lubricating method passes through the main piston rod ontology in air shut-off valve（4）Upper setting upper end closed, lower end are communicated with guiding valve pair
Shoe cream room（3）, and shoe cream room（3）The liquid level of lubricating oil is located at shoe cream room at work（3）Upper end hereinafter, in shoe cream room
（3）Top obtain an air chamber；
And a balance pipe is set（1）, the balance pipe（1）One end and shoe cream room（3）Upper end be connected, balance pipe（1）'s
The other end connects a balanced valve（2）, the balanced valve（2）Air chamber and the shoe cream room as valve chamber（3）Upper air
The communicating passage of chamber；
In the air chamber internal pressure increase of valve chamber, the balanced valve（2）It is used to implement by balance pipe（1）To shoe cream room（3）On
Air chamber import air；
When guiding valve chamber pressure declines, the pressure air on lubricating oil liquid level top is while by lubricating oil force feed to working face at this time
Through balanced valve（2）Discharge, is finally down to the pressure identical with valve chamber, reaches new balance.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| CN105972296B true CN105972296B (en) | 2018-07-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106439076B (en) * | 2016-12-26 | 2019-04-05 | 成都海瑞斯轨道交通设备有限公司 | A kind of main piston rod and air shut-off valve with type of respiration lubrication system |
| 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 |
| CN111229784B (en) * | 2020-03-02 | 2021-05-21 | 刘跃伟 | Forming process and forming equipment of biomass derived fuel (RDF) |
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| CN105972296A (en) | 2016-09-28 |
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