CN110195791A - A kind of bidirection press control valve - Google Patents
A kind of bidirection press control valve Download PDFInfo
- Publication number
- CN110195791A CN110195791A CN201810163729.9A CN201810163729A CN110195791A CN 110195791 A CN110195791 A CN 110195791A CN 201810163729 A CN201810163729 A CN 201810163729A CN 110195791 A CN110195791 A CN 110195791A
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- valve
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- pressure
- piston
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Classifications
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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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/105—Three-way check or safety valves with two or more closure members
-
- 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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0413—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of closure plates
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0473—Multiple-way safety valves
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/048—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded combined with other safety valves, or with pressure control devices
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0493—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with a spring other than a helicoidal spring
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
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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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0008—Mechanical means
- F16K37/0016—Mechanical means having a graduated scale
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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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention discloses a kind of bidirection press control valves, including fluid non-return valve and pressure-control valve, the fluid non-return valve includes first fluid import, the first valve chamber, the second valve chamber, spool, the first elastic component and first fluid outlet, the spool limit is arranged in the second valve chamber, movably along fluid flow direction one-way conduction fluid non-return valve；The pressure-control valve includes third valve chamber, the 4th valve chamber, second elastic component and piston, the third valve chamber is connected to the second valve chamber of fluid non-return valve, the piston limit is arranged in the 4th valve chamber, completely cut off third valve chamber and the 4th valve chamber, the cavity wall of the 4th valve chamber is exported equipped with second fluid.Bidirection press control valve of the present invention can efficiently control, indicate Fluid pressure, easy to operate, improve safety and validity.
Description
Technical field
The invention belongs to medical instruments fields, and in particular to a kind of bidirection press control valve can be used for the finger of Fluid pressure
Show and controls.
Background technique
Pipeline is often needed to use in surgical operation and inputs fluid to patient, and such as gas, liquid, fluid is fallen in order to prevent
Stream, people design the check valve of one-way conduction, and fluid can be inputted along the direction designed in advance, if reverse fluid flow
It then will lead to closed check valve, to realize one-directional fluid flow.However, these non-return valve functions are relatively single, it is unable to control
Or the pressure of instruction fluid.For example, the breathing of general anesthesia disease is controlled by respirator in operation, trachea cannula be connection sufferer air flue and
The connecting tube of anesthetic gases and oxygen.There are existing defects in existing design, may result in clinical patient and gas occurs during surgery
Intraluminal pressure is excessive, oppresses inner bronchial wall, causes inner wall hyperemia, oedema after operation.Severe complication patient can lead to breathing
Difficult, stopping, it is dead.It can only by virtue of experience operate tracheae due to lacking suitable pressure instruction and control device, doctor and insert
Pipe, this brings very big risk to surgery anesthesia patient.
Summary of the invention
The present invention can be used for the finger of Fluid pressure in view of the shortcomings of the prior art, provide a kind of bidirection press control valve
Show and control, can either indicate that doctor rationally adjusts intraluminal Fluid pressure, and being capable of the intraluminal fluid pressure of security control
Power is no more than warning value, easy to operate, avoids clinical complication, has greatly ensured the safety of patient.
Specific technical solution of the present invention is as follows:
A kind of bidirection press control valve, including fluid non-return valve and pressure-control valve,
The fluid non-return valve includes first fluid import, the first valve chamber, the second valve chamber, spool, the first elastic component and first-class
Body outlet, the both ends of first elastic component are only against on the valve body of spool and the second valve chamber respectively, and spool is made to close the first valve
The channel of chamber and the second valve chamber, the spool can move one-way conduction fluid non-return valve along fluid flow direction；
The pressure-control valve includes third valve chamber, the 4th valve chamber, the second elastic component and piston, the third valve chamber and fluid list
It is connected to the second valve chamber of valve, the piston limit is arranged in the 4th valve chamber, completely cuts off third valve chamber and the 4th valve chamber, the second bullet
Property part both ends respectively only be against on the valve body of piston and the 4th valve chamber, there are can move along pressure direction when pressure difference for piston two sides
It is dynamic.Piston is fitted closely with pressure-control valve inner wall, it is preferred that is coated with lubricating oil between piston and control valve inner wall, to the greatest extent may be used
The frictional force of piston Yu pressure-control valve inner wall can be reduced.
Second fluid is equipped in the cavity wall for the 4th valve chamber that piston moves through to export.It can be exported according to second fluid
Position and the warning value for needing to control Fluid pressure calculate, second elastic component of the selection with corresponding coefficient of elasticity；It can also basis
It needs to control the warning value of Fluid pressure and the coefficient of elasticity of the second elastic component, calculates in the position of pressure value lower piston displacement
It sets, corresponding position setting second fluid exports on the 4th valve chamber.Above-mentioned design may make alert more than pressure when Fluid pressure
When ring value, piston is displaced just to be exported by second fluid, and third valve chamber is made to be in communication with the outside.
Fluid of the present invention is liquid or gas, the bidirection press control valve can be used for air pressure or hydraulic instruction with
Control.
Bidirection press control valve of the present invention is in use, fluid is passed through from the first fluid import of fluid non-return valve entrance
The first valve chamber is crossed, pressure is generated to spool, pushes spool to move along fluid flow direction, leads the first valve chamber with the second valve chamber
Logical, fluid enters the second valve chamber, and a part of fluid transfers to the pipeline being attached thereto through first fluid outlet, and a part of fluid enters
Third valve chamber generates pressure to piston, pushes piston mobile.As Fluid pressure is when increasing to or being more than pressure warning value,
Piston displacement is more than second fluid outlet port, and third valve chamber is communicated with the atmosphere, and fluid is released from second fluid outlet, makes the
Fluid pressure moment in three valve chambers is lower, and lower than the warning value of Fluid pressure, piston is under the elastic force of the second elastic component through
Two fluid outlets are moved back toward third valve chamber, keep third valve chamber closed with the external world, restore cavity fluid pressure to reasonable setting
Range.
First elastic component of the present invention has suitable elasticity coefficient, so that when fluid injects and pushes spool, valve
Core does not exceed the position that the second valve chamber is connected to third valve chamber under the elastic force of the first elastic component.
Preferably, the third valve chamber is connected to the front of the second valve chamber of fluid non-return valve, to guarantee pressure-control valve
Interior Fluid pressure and whole Fluid pressure are consistent, uniform, indicate the pressure of pressure-control valve more accurate with pressure control.
The methods of this field routine can be used in the present invention and structure limits spool and piston, keep spool limited
It cannot be introduced into the first valve chamber, make piston is limited to cannot be introduced into third valve chamber, such as make the first valve chamber and the second valve chamber connectivity part the
One valve chamber cavity cross-section is less than the section of spool；It is less than third valve chamber and the 4th valve chamber connectivity part third valve chamber cavity cross-section to live
The section of plug.Or it can be further provided with the first limited block in the connectivity part of the first valve chamber and the second valve chamber, spool is set to first
Between elastic component and the first limited block, the both ends of the first elastic component are only against on the valve body of spool and the second valve chamber respectively, spool
It is only against on the first limited block, makes the channel of spool closing the first valve chamber and the second valve chamber；The third valve chamber and the 4th valve chamber
Connectivity part be equipped with the second limited block, piston is set between the second elastic component and the second limited block, the both ends of the second elastic component point
It Zhi not be against on the valve body of piston and the 4th valve chamber, piston is only against on the second limited block.
A specific technical solution of the invention, the spool further include gasket, and gasket passes through the first elastic component
Elastic force, palette can reinforce the airtightness of spool, prevent fluid from flowing backward in the communicating position of the first valve chamber and the second valve chamber.
A specific technical solution of the invention, the spool further includes valve rod, and the valve rod is stretched in the first valve chamber,
Valve rod is equipped with block, and spool is limited when block can be moved to the first valve chamber and the second valve chamber connectivity part with spool and continues to be displaced.
When block can prevent fluid flow rate/pressure excessive, spool is detached from operating position by impact.
A specific technical solution of the invention, the pressure-control valve are transparent material, and the pressure is unidirectionally controlled
Valve body or shell are equipped with Data Identification, and the piston can move in the coverage area of the Data Identification.It can basis
The relationship between displacement that the Fluid pressure that Fluid pressure and piston are subject to generates calculates, setting Data Identification.In use,
Operator can pass through transparent valve body and accurately and real-time indicate Fluid pressure according to the corresponding Data Identification in position of piston.It is excellent
Choosing, the Data Identification is colour code or scale strip.
First elastic component of the present invention and/or second is selected from spring, pressure spring, tabletting, corrugated sheets, silica gel, rubber
One or more of glue, preferably spring.
A specific scheme of the invention, pressure-control valve also have piston rod, and second elastic component is spring, bullet
Spring is worn only to be against on the front end valve body of piston and the 4th valve chamber on the piston rod, whole when piston rod can guarantee spring stress
Body structure is more stable, will not cause to be detached from because of stress deformation and only support position, correspondingly, the 4th valve chamber front end corresponds to piston
The position of bar has opening, and when piston is mobile with Fluid pressure, piston rod is stretched out from opening, makes the movement of piston will not be by
Resistance.
A specific technical solution of the invention, the bidirection press control valve, further includes pressure sensor and data
Display, the pressure sensor is connect with first elastic component and/or the second elastic component, for detecting the elastic element
Elastic force；The data display equipment is arranged on the outer wall of the fluid non-return valve and/or pressure-control valve, and the data are shown
Device is connect with the pressure sensor.
Another object of the present invention is to provide a kind of trachea cannula, including cannula interface, trachea cannula tube body, air bag,
The gentle capsule air inlet of air bag tube body, is connected with bidirection press control valve of the present invention, Bidirectional pressure at air bag air inlet
The first fluid outlet of the fluid non-return valve of force control valve is connect with air bag air inlet.
Bidirection press control valve of the present invention can be used for the instruction and control of Fluid pressure, can generally meet fluid work
The requirement of industry tool.Particularly, it can be used for medical field, a concrete application field of the invention can be used for trachea cannula.
The invention has the advantages that
Bidirection press control valve of the present invention, structure is simple, easy to use, can efficiently control Fluid pressure, work as stream
Body pressure be greater than warning value when, can rapid discharge, restore normal pressure.Also, bidirection press control valve uses transparent material,
Can effectively indicate pressure according to the position of piston, facilitate operator's control, adjustment pressure, improve operation safety and effectively
Property.
Detailed description of the invention
Fig. 1 is the structure cut-away view of bidirection press control valve described in the embodiment of the present invention 1.
Fig. 2 is the structure cut-away view of bidirection press control valve described in the embodiment of the present invention 2.
Fig. 3 is the structure cut-away view of bidirection press control valve described in the embodiment of the present invention 3.
Fig. 4 is the structure cut-away view of bidirection press control valve described in the embodiment of the present invention 4.
Fig. 5 is the structure cut-away view of bidirection press control valve described in the embodiment of the present invention 5.
Fig. 6 is the structural schematic diagram of trachea cannula described in the embodiment of the present invention 8.
Specific embodiment
Illustrate specific steps of the invention by the following examples, but is not limited by the example.
Term as used in the present invention generally there are those of ordinary skill in the art usually to manage unless otherwise indicated
The meaning of solution.
The present invention is described in further detail combined with specific embodiments below and referring to data.It should be understood that these embodiments are only
It is in order to demonstrate the invention, rather than to limit the scope of the invention in any way.
In following embodiment, the various processes and method being not described in detail are conventional methods as known in the art.
Embodiment 1
A kind of bidirection press control valve, as shown in Figure 1, including fluid non-return valve 1 and pressure-control valve 2, the fluid non-return valve 1
Including first fluid import 3, the first valve chamber 4, the second valve chamber 5, spool 6, the first elastic component 7 and first fluid outlet 8, the valve
Core limit is arranged in the second valve chamber, and the both ends of first elastic component 7 are only against the valve body of spool 6 and the second valve chamber respectively
On, so that spool 6 is closed the channel of the first valve chamber and the second valve chamber, the spool 6 can move one-way conduction along fluid flow direction
Fluid non-return valve；
The pressure-control valve 2 includes third valve chamber 9, the 4th valve chamber 10, the second elastic component 11 and piston 12, the third valve chamber
9 are connected to the second valve chamber 5 of fluid non-return valve, and the limit of piston 12 is arranged in the 4th valve chamber, with pressure-control valve inner wall
It fits closely, completely cuts off third valve chamber and the 4th valve chamber, the both ends of the second elastic component 11 are only against piston 12 and the 4th valve chamber respectively
Valve body on, there are move when pressure difference along pressure direction for piston two sides.Preferably, it is coated between piston and control valve inner wall
Lubricating oil reduces the frictional force of piston and pressure-control valve inner wall as far as possible.
4th valve cavity wall is equipped with second fluid outlet 13.Can according to second fluid export position and need to control
The warning value of Fluid pressure calculates, second elastic component of the selection with corresponding coefficient of elasticity；Fluid pressure can also be controlled as needed
The coefficient of elasticity of the warning value of power and the second elastic component is calculated in the position of pressure value lower piston displacement, in the 4th valve chamber
Upper corresponding position setting second fluid exports.So that piston is displaced process just when Fluid pressure is more than pressure warning value
Second fluid outlet, makes third valve chamber be in communication with the outside.
First elastic component of the present invention has suitable elasticity coefficient, so that when fluid injects and pushes spool, valve
Core does not exceed the position being connected to more than the second valve chamber with third valve chamber under the elastic force of the first elastic component.
Bidirection press control valve of the present invention is in use, fluid is passed through from the first fluid import 3 of fluid non-return valve entrance
The first valve chamber 4 is crossed, pressure is generated to spool 6, pushes spool 6 to move along fluid flow direction, makes the first valve chamber 4 and the second valve chamber
5 conductings, fluid enter the second valve chamber 5, and a part of fluid transfers to the pipeline being attached thereto, a part stream through first fluid outlet 8
Body enters third valve chamber 9, generates pressure to piston 12, pushes piston 12 mobile.With increasing to or more than pressure for Fluid pressure
When power warning value, the displacement of piston 12 is more than second fluid outlet port 13, and third valve chamber 9 is communicated with the atmosphere, and fluid is from second
Fluid outlet 13 releases, and the Fluid pressure moment in third valve chamber is made to be lower, and lower than the warning value of Fluid pressure, piston 12 is
It is moved back through second fluid outlet 13 toward third valve chamber 9 under the elastic force of two elastic components 11, keeps third valve chamber 9 closed with the external world, make chamber
Fluid pressure restores to zone of reasonableness.
The methods and structure that this field routine can be used limit spool and piston, make spool is limited can not be into
Enter the first valve chamber, makes piston is limited to cannot be introduced into third valve chamber, such as make the first valve chamber and second the first valve chamber of valve chamber connectivity part
Cavity cross-section is less than the section of spool；Third valve chamber and the 4th valve chamber connectivity part third valve chamber cavity cross-section is set to be less than cutting for piston
Face.
The elastic component is selected from one or more of spring, pressure spring, tabletting, corrugated sheets, silica gel, rubber, excellent
Select spring.
Embodiment 2
As shown in Fig. 2, the pressure-control valve also has piston rod 15, second elasticity in the structure basis of embodiment 1
Part is spring, and spring is worn only to be against on the front end valve body of piston and the 4th valve chamber on the piston rod, and piston rod can guarantee bullet
When spring stress, overall structure is more stable, will not cause to be detached from because of stress deformation and only support position, correspondingly, the 4th valve chamber
The position that front end corresponds to piston rod has opening 14, and when piston is mobile with Fluid pressure, piston rod 15 is stretched out from opening 14,
It is not blocked the movement of piston.
Embodiment 3
As shown in figure 3, being equipped with the first limit in the connectivity part of the first valve chamber and the second valve chamber in the structure basis of embodiment 2
Block 16, spool 6 are set between the first elastic component 7 and the first limited block 16, and the both ends of the first elastic component 7 are only against spool 6 respectively
On the valve body of the second valve chamber, spool 6 is only against on the first limited block 16, and spool is made to close the logical of the first valve chamber and the second valve chamber
Road；The junction of the third valve chamber and the 4th valve chamber is equipped with the second limited block 17, and piston 12 is set to the second elastic component 11 and the
Between two limited blocks 17, the both ends of the second elastic component 11 are only against on the valve body of piston 12 and the 4th valve chamber respectively, and piston 12 stops
It is against on the second limited block 17.
Embodiment 4
As shown in figure 4, being additionally provided with gasket 18 on spool in the structure basis of embodiment 3, gasket passes through the first elasticity
The elastic force of part, palette can be reinforced between the first valve chamber and the second valve chamber in the communicating position of the first valve chamber and the second valve chamber
Airtightness.
Embodiment 5
As shown in figure 5, the spool further includes valve rod 19 in the structure basis of embodiment 4, the valve rod is stretched in the first valve
Intracavitary, valve rod is equipped with block 20, when block can be moved to the first valve chamber and the second valve chamber connectivity part with spool limitation spool after
Continuous displacement.When block can prevent fluid flow rate/pressure excessive, spool is detached from operating position by impact.
Embodiment 6
In the structure basis of embodiment 1-5, pressure-control valve uses transparent material, pressure unidirectionally controlled valve body or shell
It is equipped with Data Identification, the piston can move in the coverage area of the Data Identification.Can according to Fluid pressure and
The relationship between displacement that the Fluid pressure that piston is subject to generates calculates, setting Data Identification.In use, operator can pass through
Transparent valve body accurately and real-time indicates Fluid pressure according to the corresponding Data Identification in position of piston.Preferably, the data
It is identified as colour code or scale strip.
Embodiment 7
In the structure basis of embodiment 1-6, bidirection press control valve further includes pressure sensor and data display equipment, the pressure
Force snesor is connect with first elastic component and/or the second elastic component, for detecting the elastic force of the elastic element；The number
It is arranged on the outer wall of the fluid non-return valve and/or pressure-control valve according to display, the data display equipment and the pressure
Sensor connection.
Embodiment 8
A kind of trachea cannula, as shown in fig. 6, including cannula interface 21, trachea cannula tube body 22, air bag 23,24 and of air bag tube body
Air bag air inlet 25 is connected with the described in any item bidirection press control valve of 1-7 of the embodiment of the present invention in air bag air inlet, double
It exports to the first fluid of the fluid non-return valve of pressure-control valve and is connect with air bag air inlet.
Claims (10)
1. a kind of bidirection press control valve, it is characterised in that including fluid non-return valve and pressure-control valve,
The fluid non-return valve includes first fluid import, the first valve chamber, the second valve chamber, spool, the first elastic component and first-class
Body outlet, the spool limit are arranged in the second valve chamber, and the both ends of first elastic component are only against spool and second respectively
On the valve body of valve chamber, make the channel of spool closing the first valve chamber and the second valve chamber, the spool is movably along fluid flowing side
To one-way conduction fluid non-return valve；
The pressure-control valve includes third valve chamber, the 4th valve chamber, the second elastic component and piston, the third valve chamber and fluid list
It is connected to the second valve chamber of valve, the piston limit is arranged in the 4th valve chamber, completely cuts off third valve chamber and the 4th valve chamber, the second bullet
Property part both ends respectively only be against on the valve body of piston and the 4th valve chamber, there are can move along pressure direction when pressure difference for piston two sides
It is dynamic；
The cavity wall of 4th valve chamber is exported equipped with second fluid.
2. bidirection press control valve as described in claim 1, it is characterised in that the of the third valve chamber and fluid non-return valve
The front of two valve chambers is connected to.
3. bidirection press control valve as described in claim 1, it is characterised in that the spool further includes gasket, and gasket can
The communicating position of the first valve chamber and the second valve chamber is fitted in by the resilient seal of the first elastic component.
4. bidirection press control valve as described in claim 1, it is characterised in that the spool further includes valve rod, and the valve rod is stretched
It opens up in the first valve chamber, valve rod is equipped with block, and block can be moved to the first valve chamber and the second valve chamber connectivity part time limit with spool
Spool processed continues to be displaced.
5. bidirection press control valve as described in claim 1, it is characterised in that the pressure-control valve is transparent material, described
The unidirectionally controlled valve body of pressure or shell are equipped with Data Identification, and the piston can be in the coverage area of the Data Identification
Interior movement.
6. bidirection press control valve as described in claim 1, it is characterised in that first elastic component and/or the second elastic component
Selected from one or more of spring, pressure spring, tabletting, corrugated sheets, silica gel, rubber.
7. bidirection press control valve as described in claim 1, it is characterised in that the pressure-control valve also has piston rod, institute
Stating the second elastic component is spring, and spring is worn only to be against on the front end valve body of piston and the 4th valve chamber on the piston rod, described the
The position that four valve chamber front ends correspond to piston rod is equipped with opening.
8. such as the described in any item bidirection press control valves of claim 1-7, it is characterised in that further include pressure sensor sum number
According to display, the pressure sensor is connect with first elastic component and/or the second elastic component, for detecting the elasticity member
The elastic force of part；The data display equipment is arranged on the outer wall of the fluid non-return valve and/or pressure-control valve, and the data are aobvious
Show that device is connect with the pressure sensor.
9. a kind of trachea cannula, including the gentle capsule air inlet of cannula interface, trachea cannula tube body, air bag, air bag tube body, feature
It is the connection such as described in any item bidirection press control valves of claim 1-8, the bidirection press control at air bag air inlet
The first fluid outlet of the fluid non-return valve of valve processed is connect with air bag air inlet.
10. application of the bidirection press control valve in trachea cannula as described in claim any one of 1-8.
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| CN201810163729.9A CN110195791A (en) | 2018-02-27 | 2018-02-27 | A kind of bidirection press control valve |
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| CN201810163729.9A CN110195791A (en) | 2018-02-27 | 2018-02-27 | A kind of bidirection press control valve |
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| CN201810163729.9A Pending CN110195791A (en) | 2018-02-27 | 2018-02-27 | A kind of bidirection press control valve |
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| CN111075953A (en) * | 2019-10-07 | 2020-04-28 | 阿特拉斯·科普柯空气动力股份有限公司 | Flush valve, dust collector and dust collection system |
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