CN107237906A - A kind of air-channel system of Pressure Relief Valve and medicine equipment - Google Patents
A kind of air-channel system of Pressure Relief Valve and medicine equipment Download PDFInfo
- Publication number
- CN107237906A CN107237906A CN201710592166.0A CN201710592166A CN107237906A CN 107237906 A CN107237906 A CN 107237906A CN 201710592166 A CN201710592166 A CN 201710592166A CN 107237906 A CN107237906 A CN 107237906A
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- valve
- inner chamber
- valve element
- pressure relief
- bonnet
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- 239000003814 drug Substances 0.000 title claims abstract description 14
- 230000033001 locomotion Effects 0.000 claims description 32
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 11
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 11
- 238000013016 damping Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- 206010002091 Anaesthesia Diseases 0.000 claims description 4
- 230000037005 anaesthesia Effects 0.000 claims description 4
- 210000004072 lung Anatomy 0.000 claims description 4
- 229920006324 polyoxymethylene Polymers 0.000 claims description 4
- 230000003746 surface roughness Effects 0.000 claims description 4
- 230000001788 irregular Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000005484 gravity Effects 0.000 abstract description 15
- 230000009471 action Effects 0.000 abstract description 3
- 210000003660 reticulum Anatomy 0.000 description 76
- 239000000463 material Substances 0.000 description 6
- 230000009467 reduction Effects 0.000 description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000013536 elastomeric material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- F16K17/06—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 special arrangements for adjusting the opening pressure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/20—Valves specially adapted to medical respiratory devices
- A61M16/208—Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
- A61M16/209—Relief valves
-
- 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
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Pulmonology (AREA)
- Heart & Thoracic Surgery (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Emergency Medicine (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Safety Valves (AREA)
Abstract
The invention provides a kind of Pressure Relief Valve and the air-channel system of medicine equipment, Pressure Relief Valve includes：Valve body, the valve body has a first inner chamber opened up along the valve body bearing of trend and the air inlet and exhaust outlet that are connected with the first inner chamber；Valve element support member, bearing of trend of the valve element support member along the valve body is fixed in the first inner chamber；And valve element, it is connected between the valve element and the valve element support member by axis hole gap, and the valve element can be slided along the bearing of trend of the valve body relative to the valve element support member, the valve element is used to block the air inlet or make to connect between the air inlet and the first inner chamber.The Pressure Relief Valve that the present invention is provided is solved when the Pressure Relief Valve with valve element is horizontally mounted in the prior art due to the problem of control accuracy is low caused by the Action of Gravity Field influence of valve element.
Description
Technical field
The invention belongs to valve field, the air-channel system of more particularly to a kind of Pressure Relief Valve and medicine equipment.
Background technology
Pressure Relief Valve is a kind of safety valve being installed on the parts such as pressure vessel or valve pipe, when pressure vessel or
When the pressure value of valve pipe exceedes the numerical value that Pressure Relief Valve is set, the Pressure Relief Valve can be automatically turned on drainage pressure,
The pressure in pressure vessel or valve pipe is set to continue rise, it is ensured that the safety of pressure vessel or valve pipe.Work as pressure
When pressure value in force container or valve pipe is down to certain numerical value, Pressure Relief Valve is closed automatically again.
In medicine equipment or other field, often use control pressure is smaller (to typically refer to control pressure in 10-
In the range of 70mbar) Pressure Relief Valve, for example for Anesthesia machine breathing circuit pressure security control, lung ventilator breathing circuit
Pressure security control and rescue breathing equipment the field such as circuit pressure security control, due to the pressure releasing in these fields
The control pressure of valve is smaller, therefore the requirement to control accuracy is higher.
At present, it is main that pressure is controlled using spring Pressure Relief Valve.Spring Pressure Relief Valve typically has
Spring and entity valve element, when the gas pressure value outside Pressure Relief Valve reaches certain numerical value, the gas meeting outside Pressure Relief Valve
The entity valve element for acting on Pressure Relief Valve is moved it, and makes spring-compressed, and the now movement of entity valve element causes pressure to let out
The gas put outside valve opening, Pressure Relief Valve is released from Pressure Relief Valve, so as to avoid the gas of the gas outside Pressure Relief Valve
Pressure value is too high；When atmospheric pressure value is reduced to safety value, compression spring can recover deformation so that entity valve element is returned to initial position,
Spring Pressure Relief Valve is closed.
When spring Pressure Relief Valve is horizontally mounted, the Action of Gravity Field due to entity valve element by itself is offset downward,
Cause spring Pressure Relief Valve not to be turned on and off under actual setting pressure, the control of spring Pressure Relief Valve can be influenceed
Precision processed, therefore, to ensure control accuracy, for medicine equipment or the higher field of other control accuracy requirements, prior art
Middle spring Pressure Relief Valve when in use typically can only be vertically-mounted along gravity direction, makes entity valve element and spring along gravity
Direction is set.However, vertically-mounted also bring some problems：On the one hand, for the Medical Devices that some volumes are limited, erect
Straight install causes spring Pressure Relief Valve to occupy more operating spaces；On the other hand, this also constrains spring pressure
The use scope of bleeder valve.
The content of the invention
It is an object of the present invention to provide a kind of Pressure Relief Valve, it is intended to solve Pressure Relief Valve level in the prior art
Due to the problem of control accuracy is low caused by the Action of Gravity Field of entity valve element during installation.
In order to solve the above technical problems, the invention provides a kind of Pressure Relief Valve, including：Valve body, the valve body has
One first inner chamber opened up along the valve body bearing of trend and the air inlet and exhaust outlet connected with the first inner chamber；Valve element
Support member, bearing of trend of the valve element support member along the valve body is fixed in the first inner chamber；And valve element, the valve
Be connected between core and the valve element support member by axis hole gap, and the valve element can along the valve body bearing of trend phase
Slided for the valve element support member, the valve element is used to block the air inlet or makes the air inlet and the first inner chamber
Between connect.
Further, the valve element support member has one to extend along the second inner chamber that direction is opened up, the one of the valve element
Part is equipped with the second inner chamber by axis hole gap.
Further, the valve element has one to extend along the 3rd inner chamber that direction is opened up, the one of the valve element support member
Part is equipped with the 3rd inner chamber by axis hole gap.
Further, the Pressure Relief Valve also includes flexible member, and the flexible member is arranged at the first inner chamber
It is interior；When being slided when the valve element towards the direction away from the air inlet, the flexible member is compressed by the valve element, the air inlet
Mouth between first inner chamber with connecting；When the flexible member recovers deformation, the valve element is in the presence of the flexible member
Slided towards the direction of the close air inlet and block the air inlet.
Further, the valve body includes the first bonnet, valve casing and the second bonnet, one end of the valve casing and described first
Bonnet is connected, and the other end of the valve casing is connected with second bonnet, and first bonnet, valve casing and the second bonnet enclose shape
Into the first inner chamber, the air inlet is opened on second bonnet and connected with the first inner chamber, the exhaust outlet
It is opened on the side wall of the valve casing and is connected with the first inner chamber.
Further, one end of first bonnet and the valve casing is detachably connected, second bonnet and the valve
The other end of shell is detachably connected or integrated setting.
Further, the Pressure Relief Valve also includes the regulation of flexible member and the regulation deformation of elastic components amount
Mechanism, the governor motion is connected through first bonnet and with the valve element support member；The flexible member is arranged at institute
State in first inner chamber, the two ends of the flexible member are respectively arranged on the governor motion and the valve element, when the valve element
When being slided towards the direction away from the air inlet, the flexible member is compressed by the valve element, the air inlet and first inner chamber
Between connect；When the flexible member recovers deformation, the valve element enters in the presence of the flexible member towards described in
Slide and block the air inlet in the direction of gas port.
Further, the flexible member is spring, and the spring housing is located on the valve element support member and the valve element,
Its two ends is respectively arranged on the governor motion and the valve element.
Further, the valve element includes valve rod and is arranged at the bonnet of described valve rod one end, one of the valve rod
Divide and be equipped with by axis hole gap in the second inner chamber, another part of the valve rod and the bonnet extend institute
Second inner chamber is stated, the flexible member is sheathed on the valve element support member and the valve rod, and one end of the flexible member is set
It is placed on the bonnet, the other end is arranged on the governor motion, the bonnet is used to block the air inlet or made described
Connected between air inlet and the first inner chamber.
Further, the valve casing has a connecting interface, the connecting interface two close to the end of second bonnet
End is connected with the first inner chamber and the air inlet respectively, and the bonnet is used to block the connecting interface or makes the connection
Connected between interface and the first inner chamber.
Further, the interface of the first inner chamber and the connecting interface is provided with one first circular protrusion, described
Bonnet is cylinder, and the diameter of first circular protrusion is more than the diameter of the connecting interface and is less than the straight of the bonnet
Footpath, the bonnet is used in sealing contact or separate and do not contact with first circular protrusion with first circular protrusion.
Further, the governor motion includes adjustment portion and rotating part, and one end of the adjustment portion runs through described first
Bonnet is installed on one end of the rotating part, and the other end of the rotating part is connected with the valve element support member, the rotating part
The groove that matches provided with one with the flexible member of the other end, the other end of the flexible member is arranged at the groove
In, the axial direction that the adjustment portion makes it along the valve body for adjusting the rotating part is moved back and forth.
Further, the adjustment portion includes regulation damping ring and adjusting rod, and one end of the adjusting rod is through described the
One bonnet is installed on one end of the rotating part, and the regulation damping ring is sheathed on the other end of the adjusting rod.
Further, the rotating part and the valve element support member integrated setting.
Further, the rotating part outer surface is provided with external screw thread, and the first inner chamber is close to the portion of first bonnet
Divide with the internal thread matched with the external screw thread, the length of the internal thread is more than the externally threaded length, the rotation
Transfer part is connected with the valve body screw thread, and the adjustment portion is used for the rotation for adjusting the rotating part.
Further, the rotating part offers a hole, the shape of one end of the adjustment portion close to the part of its one end
Shape and size and the shape and size of described hole, which match and run through first bonnet, to be arranged in described hole, described to adjust
The one end in section portion is rotated for driving the rotating part to rotate.
Further, the shape of cross section of described hole is ellipse, regular polygon or irregular shape.
Further, the valve element uses the one or more in polytetrafluoroethylene (PTFE), nylon and polyformaldehyde to be mixed.
Further, it is micro- that the surface roughness Rz values on the surface that the valve element support member is contacted with the valve element are less than 3.2
Rice.
Further, the gap width that the axis hole gap between the valve element and the valve element support member coordinates is 0-
0.15mm。
Further, the second inner chamber is stepped cylindrical body, and it is included along the valve body bearing of trend and away from institute
The 4th sub- inner chamber and the 5th sub- inner chamber close to the air inlet of air inlet are stated, the diameter of the 5th sub- inner chamber is more than described
The diameter of 4th sub- inner chamber a, part for the valve element is equipped with the 4th sub- inner chamber and described by axis hole gap
Intracavitary in five sons.
Further, intermediate location, the transition part are also included between the 5th sub- inner chamber and the 4th sub- inner chamber
The diameter of position is tapered into along the direction close to the 4th sub- inner chamber.
Further, the part of the 5th sub- inner chamber away from the 4th sub- inner chamber is provided with one second circular protrusion, institute
The diameter for stating the second circular protrusion is equal to the diameter of the 4th sub- inner chamber.
Further, the outer surface of the valve element in the 5th sub- inner chamber is provided with one the 3rd circular protrusion,
The diameter of 3rd circular protrusion is more than the diameter of second circular protrusion.
Further, second circular protrusion and/or the 3rd circular protrusion are flexible.
Present invention also offers a kind of air-channel system of medicine equipment, contain Pressure Relief Valve as described above, the pressure
Power bleeder valve is horizontal positioned.
Further, the medical instrument system is Anesthesia machine or lung ventilator.
Compared with prior art, the invention provides a kind of Pressure Relief Valve and the air-channel system of medicine equipment, the pressure
Power bleeder valve solved by setting valve element support member, effectively the Pressure Relief Valve with valve element during being horizontally mounted by
, so can be with the problem of control accuracy is low caused by being influenceed by valve element gravity, it is ensured that Pressure Relief Valve can be horizontally mounted
More operating spaces are saved for user, and are horizontally mounted also so that the operational control of Pressure Relief Valve more meets general behaviour
Work is accustomed to, in the medicine equipment or other field that may be applicable to high-precision control.
Secondly, valve element is using light weight and the material (such as polytetrafluoroethylene (PTFE)) with self-lubricity is made, and can further reduce
Gravity influences, and improves the control accuracy of Pressure Relief Valve.
Furthermore, the second inner chamber of valve element support member uses high bright and clean inner surface (surface roughness Rz values are less than 3.2 microns),
The frictional force between valve element and second inner chamber can be further reduced, control essence of the Pressure Relief Valve when being horizontally mounted is improved
Degree.
In addition, the present invention can be quantitatively controlled the Opening pressure of Pressure Relief Valve also by setting governor motion.
Brief description of the drawings
Fig. 1 is a kind of structure sectional view schematic diagram for Pressure Relief Valve that one embodiment of the invention is provided；
Fig. 2 is the rotating part and valve element support member integrated setting for a kind of Pressure Relief Valve that one embodiment of the invention is provided
When structural representation；
Fig. 3 is a kind of schematic appearance for Pressure Relief Valve that one embodiment of the invention is provided；
Description of reference numerals：
1- valve bodies；2- valve element support members；3- valve elements；4- flexible members；5- governor motions；6- intake interfaces；In 10- first
Chamber；101- internal threads；11- air inlets；12- exhaust outlets；The bonnets of 13- first；14- valve casings；141- connecting interfaces；The rings of 142- first
Shape projection；The bonnets of 15- second；16- sealing rings；20- second inner chambers；The sub- inner chambers of 201- the 4th；The sub- inner chambers of 202- the 5th；203- mistakes
Cross position；The circular protrusions of 204- second；The inner chambers of 30- the 3rd；31- bonnets；32- valve rods；The circular protrusions of 33- the 3rd；51- is adjusted
Portion；511- adjusts damping ring；512- adjusting rods；52- rotating parts；521- grooves；522- external screw threads；523- holes.
Embodiment
Below in conjunction with the drawings and specific embodiments to a kind of Pressure Relief Valve proposed by the present invention and the gas circuit of medicine equipment
System is described in further detail.According to following explanation and claims, advantages and features of the invention will become apparent from.Need
Bright, accompanying drawing is using very simplified form and uses non-accurately ratio, only conveniently, lucidly to aid in illustrating
The purpose of the embodiment of the present invention.Same or analogous reference represents same or analogous part in accompanying drawing.
Fig. 1 is a kind of schematic diagram for Pressure Relief Valve that one embodiment of the invention is provided.Fig. 2 is that one embodiment of the invention is carried
Structural representation when a kind of rotating part of the Pressure Relief Valve supplied is with valve element support member integrated setting；Fig. 3 is the present invention one
A kind of schematic appearance for Pressure Relief Valve that embodiment is provided.It refer to Fig. 1 and Fig. 2 and Fig. 3, a kind of Pressure Relief Valve,
Including valve body 1, valve element support member 2 and valve element 3；The valve body 1 has a first inner chamber opened up along the bearing of trend of valve body 1
10 and the air inlet 11 and exhaust outlet 12 that are connected with the first inner chamber 10；The prolonging along the valve body 1 of valve element support member 2
Direction is stretched to be fixed in the first inner chamber 10；Coordinated between the valve element 3 and the valve element support member 2 by axis hole gap and connected
Connect, and the valve element 3 can be slided along the bearing of trend of the valve body 1 relative to the valve element support member 2, the valve element 3 is used for
Block the air inlet 11 or make to connect between the air inlet 11 and the first inner chamber 10.In the present embodiment, the valve
Body is cylinder, and the air inlet 11 can be arranged at the one end of the valve body 1 vertically, and the exhaust outlet 12 can be arranged on
The valve body 1 is on its axial side wall, and gas can enter the first inner chamber 10, Ran Houcong from the exhaust outlet 12
The exhaust outlet 12 flows out the first inner chamber 10.In another embodiment, the valve body 10 can also be other shapes, for example
Cube or hexagon cylinder etc..
In the present embodiment, it is connected between the valve element 3 and the valve element support member 2 for axis hole gap, both it
Between have gap, the valve element support member 2 can support the valve element 3, enable extension side of the valve element 3 along the valve body 1
To placement, when the Pressure Relief Valve horizontal positioned, you can realize that valve element 3 has the valve element support member 2 to carry in horizontal positioned
The support force of confession, the support force can offset influence of the gravity for valve element 3, it is to avoid the valve element downward bias caused by gravity
Move, be conducive to improving control accuracy when Pressure Relief Valve is horizontally mounted.
Wherein, the axis hole gap between the valve element 3 and the valve element support member 2 is connected, and can be the valve element 3
The outside of the valve element support member 2 is socketed in, the valve element 3 has one to extend along the 3rd inner chamber 30 that direction is opened up, described
A part for valve element support member 2 is equipped with the 3rd inner chamber 30 by axis hole gap.As preferred or
The valve element support member 2 is socketed in the outside of the valve element 3, and the valve element support member 2 has one to extend along what direction was opened up
Second inner chamber 20 a, part for the valve element 3 is equipped with the second inner chamber 20 by axis hole gap.The present embodiment is excellent
Choosing uses second scheme, and the valve element support member 2 is socketed in the outside of the valve element 3, and a part for so described valve element 3 can
To be contained in valve element support member 2 so that the valve element support member 2 can preferably provide support to the valve element 3, reduce valve
The gravity influence of core 3 itself.
The valve body 1 may include the first bonnet 13, the bonnet 15 of valve casing 14 and second, one end of the valve casing 14 and described the
One bonnet 13 is connected, and the other end of the valve casing 14 is connected with second bonnet 15, first bonnet 13, valve casing 14 and
Two bonnets 15 are enclosed to form the first inner chamber 10, and the air inlet 11 is opened on second bonnet 15 and with described first
Inner chamber 10 is connected, and the exhaust outlet 12 is opened on the side wall of the valve casing 14 and through the side wall of the valve casing 141, is made described
Exhaust outlet 12 is connected with the first inner chamber 10.One end of first bonnet 13 and the valve casing 14 is preferably detachably to connect
Connect, the other end of second bonnet 15 and the valve casing 14 is preferably to be detachably connected or integrated setting.Herein, the valve
One end of shell 14 and the other end refer to two ends relative on the bearing of trend of valve casing 14.
It will be arranged to be detachably connected between valve casing 14 described in first bonnet 13, when Pressure Relief Valve assembling
When, first bonnet 13 is opened, after the component in the first inner chamber 10 is installed, you can connection first bonnet 13
With the valve casing 14.
The quantity of the exhaust outlet 12 may be configured as one or more, for example, symmetrical two are set on the valve casing 14
Exhaust outlet 12 (i.e. two exhaust outlets 12 are distributed along the radial symmetric of valve casing 14), can make the gas in the first inner chamber 10 rapid
Discharge, improves the sensitivity of Pressure Relief Valve.
In the present embodiment, it can be connected by screw between second bonnet 15 and the valve casing 14, or
It is detachably connected or integrated setting (i.e. the two is integrally formed), certainly, second bonnet 15 and the valve casing 14
Limitation can be refused this using other modes connection, the present invention.Preferably, between second bonnet 15 and the valve casing 14
Except the air inlet 11 with addition to the position that the first inner chamber 10 is connected, remainder is tightly connected, such as by described
Set sealing ring 16 to be tightly connected to realize between second bonnet 15 and the valve casing 14, be so conducive to preventing the air inlet
The connecting portion of 11 gas from second bonnet 15 and the valve casing 14 is spilt, it is to avoid the control essence of influence Pressure Relief Valve
Degree.
In addition, in the present embodiment one and institute can also be installed in the one end of second bonnet 15 away from the valve casing 14
The intake interface 6 of the connection of air inlet 11 is stated, the purpose for setting the intake interface 6 is in order that ambient atmos pipeline easily leads to
The intake interface 6 is crossed to install with Pressure Relief Valve.
In the present embodiment, the Pressure Relief Valve can also include a flexible member 4, and the flexible member 4 is arranged at
In the first inner chamber 10.The flexible member 4 can be arranged in the periphery of the valve element 3, the present embodiment, the elasticity member
Part is set around the valve element 3, and two ends are respectively arranged on the valve element 3 and portion of the valve body 1 away from the air inlet 11
On point.
When being slided when the valve element 3 towards the direction away from the air inlet 11, the flexible member 4 is pressed by the valve element 3
Contract and moved with the valve element 3 towards the direction away from the air inlet 11, between the air inlet 11 and first inner chamber 10
Connection；When the flexible member 4 recovers deformation, the valve element 3 is in the presence of the flexible member 4 towards close to the air inlet
Slide and block the air inlet 11 in the direction of mouth 11.The flexible member 4 can give the offer effect of valve element 3 when compressing
Power, the active force is supplied to the pressure of the valve element 3 to offset with the gas at the air inlet 11, and limitation valve element 3 is unrestricted
Towards away from air inlet 11 direction move；On the other hand, when the gas pressure at the air inlet 11 reduces, the elasticity
Element 4 can recover deformation and provide thrust to the valve element 3, promote the valve element 3 to be reset to the closure air inlet 11.Another
In one embodiment, the flexible member 4 can also be arranged between the valve element 3 and the air inlet 11, and its two ends is set respectively
Put on the valve element 3 and the valve body is on the part of the air inlet 11.
With continued reference to shown in Fig. 1, the Pressure Relief Valve may also include the regulation machine for adjusting the deformation quantity of flexible member 4
Structure 5, the governor motion 5 is connected through first bonnet 13 and with the valve element support member 2.The flexible member 4 is distinguished
It is arranged on the governor motion 5 and the valve element 3.When being slided when the valve element 3 towards the direction away from the air inlet 11, institute
State flexible member 4 to be compressed by the valve element 3, connected between the air inlet 11 and first inner chamber 10；When the flexible member 4 is extensive
During complex deformation, the valve element 3 slides towards the direction of the close air inlet 11 in the presence of the flexible member 4 and blocks institute
Air inlet 11 is stated, makes to seal between the air inlet 11 and the first inner chamber 10 and does not connect.Wherein, the flexible member 4
Two ends can both be connected and fixed with the valve element 3 and the governor motion 5, can also only with the valve element 3 and described
The contact of governor motion 5, which sets to be in, is not connected to fixed state.
The setting of adjustment structure 5 is the initial deformation amount for regulation elasticity element 4, can so be arranged as required to pressure
The Opening pressure of power bleeder valve, for example, after it is compressed using the regulation elasticity element 4 of governor motion 5, flexible member 4 can court
The valve element 3 is applied pressure to close to the direction of air inlet 11, so, only when the admission pressure of air inlet 11 is more than elasticity
During the pressure that element 4 applies, the valve element 3 can just be moved towards the direction away from the air inlet 11, so that air inlet 11
Connected with the first inner chamber 10, because the first inner chamber 10 is connected with exhaust outlet 12, gas will pass through the exhaust outlet 12
Discharge, so that completing Pressure Relief Valve opens the work of gas of releasing, therefore, the effect of governor motion 5 is exactly to adjust
The deformation quantity of flexible member 4, so as to set the Opening pressure of Pressure Relief Valve.
As a nonrestrictive example, the flexible member 4 can be spring, and the spring housing is located at the valve element
On support member 2 and the valve element 3, its two ends is respectively arranged on the governor motion 5 and the valve element 3.Pressure with spring
The spring Pressure Relief Valve that power bleeder valve can be referred to as in spring Pressure Relief Valve, the present embodiment is provided with valve element support member
2, it can be achieved to be horizontally mounted and with higher control accuracy.For pressure pilot-operated type relief valve, with valve element
Spring Pressure Relief Valve valve general structure it is more compact integrated, and can realize and be horizontally mounted, add such have it is real
The advantage of the Pressure Relief Valve of body valve element and use scope.
The valve element 3 may include valve rod 32 and be arranged on the bonnet 31 of described one end of valve rod 32.The one of the valve rod 32
Part is equipped with the second inner chamber 20 by axis hole gap, another part and the bonnet 31 of the valve rod 32
Extend the second inner chamber 20, the flexible member 4 (such as spring) is sheathed on the valve element support member 2 and the valve rod 32
On, one end of the flexible member 4 (such as spring) can be connected with being arranged on the bonnet 31 with the bonnet 31,
Setting can also be only contacted with the bonnet 31, contact, which is set, can equally enable the bonnet 31 to provide active force to institute
Stating flexible member 4 compresses it, and the other end is arranged on the governor motion 5, and the bonnet 31 is used to block the air inlet
11 or make to connect between the air inlet 11 and the first inner chamber 10.
The bonnet 31 be, for example, cylindrical-shaped structure, rectangular configuration or hexgonal structure, as long as can realize valve element 3 with
The sealing of air inlet 11.The radial dimension of the bonnet 31 is more than the flexible member 4 (such as spring) and the air inlet
11 radial dimension, so that the flexible member 4 can be contacted with the bonnet 31, and enters in the bonnet 31 towards away from described in
During the direction movement of gas port 11, the flexible member 4 can be compressed by the bonnet 31, meanwhile, in the bonnet 31 towards close
During the direction movement of the air inlet 11, the bonnet 31 can block the air inlet 11 completely.It should be understood that valve element 3 is not
Be only limitted to the structure of bonnet and valve rod, if valve element 3 can realize closure air inlet 31 and valve element 3 away from air inlet 31 make into
Gas port 31 is connected with the first inner chamber 10, such as, and the valve element 3 can also be single cylindrical structural, its diameter
More than the radial width of the air inlet 11, meanwhile, flexible member 4 (such as spring) is connected with the end of the valve element of cylinder, is made
When cylindrical spool is moved away from the air inlet 11, flexible member 4 can be compressed.
Preferably, the valve element 3 in the present embodiment can be hollow, to mitigate the weight that valve element 3 is overall,
So that valve element 3 in horizontal positioned by gravity factor influenceed further reduction.
Fig. 1 is refer to, the valve casing 14 has a connecting interface 141, the company close to the end of second bonnet 15
The two ends of connection interface 141 are connected with the first inner chamber 10 and the air inlet 11 respectively, and the bonnet 31 is used to block the company
Connection interface 141 makes to connect between the connecting interface 141 and the first inner chamber 10.
Specifically, the size of bonnet 31 described in the present embodiment is more than the size of the connecting interface 141.When the valve
When bearing of trend (axial direction) of the core 3 along the valve body 1 is towards close to the slip of the direction of the air inlet 11, the bonnet 31 can cover
Cover and block the connecting interface 141 and do not connected so that being sealed between the connecting interface 141 and the first inner chamber 10, from
And cause the air inlet 11 is also sealed between the first inner chamber 10 not connect；When the bonnet 31 is towards away from the air inlet
During the direction movement of mouth 11, connected between the connecting interface 141 and the first inner chamber 10, so as to also cause the air inlet
Connected between 11 and the second inner chamber 10.
In the present embodiment, by setting connecting interface 141, can cause the valve casing 14 and second bonnet 15 it
Between contact site become smaller, 31 need of bonnet of so described valve element 3 block i.e. salable after the connecting interface 141
The air inlet 11 and the first inner chamber 10, beneficial to being tightly connected between the valve casing 14 and second bonnet 15, prevent
Only the gas of air inlet 11 is spilt from connecting portion.
Wherein, it can be dashed forward on the interface of the first inner chamber 10 and the connecting interface 141 provided with one first ring-type
142 are played, the diameter of first circular protrusion 142 is more than the diameter of the connecting interface 141 and less than the chi of the bonnet 31
Very little, when the bonnet 31 is cylinder, the diameter of first circular protrusion 142 is less than the diameter of the bonnet 31.It is described
Bonnet 31 is used in sealing contact or separate and do not contact with first circular protrusion 142 with first circular protrusion 142.Set
When the purpose of first circular protrusion 142 is in order that valve element 3 seals the connecting interface 141, valve element 3 only need to be with first ring
Shape projection 142 is in sealing contact to be can be achieved to seal the connecting interface 141, reduces contact area, and further reinforcement is close
Seal effect.
In the present embodiment, the governor motion 5 may include adjustment portion 51 and rotating part 52, and the adjustment portion 51 is used to adjust
The rotating part 52 is so that its axial direction along the valve body 1 is moved back and forth.Specifically, one end of the adjustment portion 51 is along valve
Body 1 axially penetrates through one end that first bonnet 13 is installed on the rotating part 52, the other end of the rotating part 52 and institute
State valve element support member 2 to connect, the other end of the rotating part 52 is provided with a groove 521 matched with the flexible member 4, institute
The other end for stating flexible member 4 is arranged in the groove 521.In the present embodiment by the advance of the rotating part 52 (i.e. to
Moved close to the direction of air inlet 11) pressure is applied to the flexible member 4, realize the mesh for improving pressure releasing valve opening pressure
, meanwhile, when the rotating part 52 is retreated and (moved to the direction away from air inlet 11), the flexible member 4 can be gradually extensive
Complex deformation, realizes the purpose of reduction pressure releasing valve opening pressure.
The adjustment portion 51 further may include regulation damping ring 511 and adjusting rod 512, one end of the adjusting rod 512
One end of the rotating part 52 is installed on through first bonnet 13, the regulation damping ring set 511 is located at the adjusting rod
On 512 other end.The regulation damping ring 511 is set, the Opening pressure of Pressure Relief Valve demarcation can be subjected to and shown
Come, further facilitate the use of Pressure Relief Valve.
In the present embodiment, the rotating part 52 and the integrated setting of valve element support member 2, i.e., the two is to be integrally formed
So that more compact structure.It should be noted that being not limited to integrated setting between rotating part 52 and the valve element support member 2, also may be used
To make the rotating part 52 be linked together with the valve element support member 2 by the mode such as snapping connection, welding, for reality
The existing rotating part 52 is synchronized with the movement with the valve element support member 2.
With reference to shown in Fig. 1 and Fig. 2, the outer surface of rotating part 52 is provided with external screw thread 522, and the first inner chamber 10 is close to institute
Stating the part of the first bonnet 13 has the internal thread 101 matched with the external screw thread 522, and the length of the internal thread 101 is big
In the length of the external screw thread 522, the rotating part 52 is threadedly coupled with the valve body 1, and the adjustment portion 51 is used to adjust institute
Rotating part 52 is stated to rotate.When the adjustment portion 51 is used to adjusting the rotating part 52 and rotated, may be such that the external screw thread 522 with
Matching is screwed or unscrewed between the internal thread 101, so as to realize that the rotating part 52 is straight on the axial direction of valve body 1
Line is moved, because the groove 521 on the rotating part 52 contacts setting with the flexible member 4, therefore the rotating part 52
Linear motion can drive the flexible member 4 to compress or recover deformation.
Primary Reference Fig. 2, the rotating part 52 offers a hole 523, the adjustment portion 51 close to the part of its one end
One end shape and size and the shape and size of described hole 523 match, one end of the adjustment portion 51 is through described
First bonnet 13 enters in described hole 523, and one end of the adjustment portion 51 is rotated for driving the rotating part 52 to rotate.Institute
The shape of cross section for stating hole 523 is preferably ellipse, regular polygon or irregular shape, by setting hole 523, and by institute
The cross section for stating hole 523 is arranged to non-circular, when the adjustment portion 51 rotates, because the shape of described hole 523 is limited,
The rotation of adjustment portion 51 can drive the rotating part 52 to rotate.
In preferred scheme, the valve element 3 is using light weight and the material with self-lubricity is made.The quality of the valve element 3 is got over
Small, it is influenceed smaller by gravity factor, during simultaneous with self-lubricity, can further reduce valve element 3 and the valve element support member 2
Between frictional force so that substantially reduced during valve core movement by External force interference factor, improve the control accuracy of Pressure Relief Valve.
Typical light weight and material with self-lubricity feature is polytetrafluoroethylene (PTFE) (PTFE), nylon and polyformaldehyde (POM), can be used
The valve element 3 is made in one or more combination in above-mentioned three kinds of materials, and the valve element 3 is preferred to use polytetrafluoroethylene (PTFE) and is made,
Certainly, other known light weights can also be used and the valve element 3 is made in the material with self-lubricity.
Further, the surface roughness Rz values on the surface that the valve element support member 2 is contacted with the valve element 3 are less than 3.2
Micron.The valve element support member 2 is arranged to high smooth finish surface with the surface that the valve element 3 is contacted, can reduce the valve element 3 with
Frictional force between it, further improves the control accuracy of Pressure Relief Valve.
The gap width that axis hole gap between the valve element 3 and the valve element support member 2 coordinates is 0-0.15mm.By gap
Value is arranged on 0-0.15mm, on the basis of machining accuracy is ensured the valve element support member 2 can be enabled to support as far as possible
The valve element 3, makes the holding level of valve element 3, reduction valve element 3 in motion process by gravity factor influence, improve and press
The control accuracy of power bleeder valve.
Further, the second inner chamber 20 is preferably stepped cylindrical body, and it is included along the valve body bearing of trend simultaneously
The 4th sub- inner chamber 201 away from the air inlet 11 and the 5th sub- inner chamber 202 close to air inlet 11, the 5th sub- inner chamber
202 diameter is more than the diameter of the described 4th sub- inner chamber 201, the part of the valve element 3 by axis hole gap be equipped with
In the 4th sub- inner chamber 201 and the 5th sub- inner chamber 202.The second inner chamber 20 is arranged to two parts, and it is described
The diameter of 5th sub- inner chamber 202 is more than the diameter of the described 4th sub- inner chamber 201, is to further reduce the valve element 3 and institute
The contact area between second inner chamber 20 is stated, the valve element 3 being arranged in the second inner chamber 20 divide into two parts, one
Divide and be located in the described 4th sub- inner chamber 201 and be in contact with it, the 4th sub- inner chamber 201 supports the valve element 3, another part position
In the described 5th sub- inner chamber 202, but by the diameter of the described 5th sub- inner chamber 202 is more than the described 4th sub- inner chamber 201 and institute
The diameter of valve element 3 is stated, therefore this part valve element in the described 5th sub- inner chamber 202 is in vacant state, reduces the valve
Contact area between core 3 and the second inner chamber 20, so as to reduce the friction between the valve element 3 and the second inner chamber 20
Power, improves the control accuracy of Pressure Relief Valve.
In preferred scheme, intermediate location 203 is also included between the 5th sub- inner chamber 202 and the 4th sub- inner chamber 201,
The diameter of the intermediate location 203 is tapered into along the direction close to the described 4th sub- inner chamber 201.The presence of intermediate location 203
Be in order that interface between the 5th sub- inner chamber 202 and the 4th sub- inner chamber 201 is more smooth, prevent the valve
The end of core 3 in motion process when touching the intermediate location 203 by excessive drag effects.
Wherein, the described 5th part of the sub- inner chamber 202 away from the described 4th sub- inner chamber 201 is provided with one second circular protrusion
204, the diameter of second circular protrusion 204 is equal to the diameter of the described 4th sub- inner chamber 201.Second circular protrusion 204
Effect be and the described 4th sub- inner chamber 201 coordinates the support valve element 3 so that the valve element portion in the second inner chamber 20
There is support at the two ends divided.
In the present embodiment, the outer surface of the valve element 3 in the described 5th sub- inner chamber 202 is provided with one and described the
The 3rd circular protrusion 33 that one annular projection 204 matches, the diameter of the 3rd circular protrusion 33 is more than second ring-type
The diameter of projection 204.The effect of 3rd circular protrusion 33 is the valve element 3 to be carried out spacing, prevents the 3rd ring-type
Projection 33 deviates from the described 5th sub- inner chamber 202, so as to control the valve element 3 to be moved to close to the direction of air inlet 11
Distance, prevents the valve element 3 from deviating from the described 5th sub- inner chamber 202.
With reference to Fig. 1 and Fig. 2, second circular protrusion 204 and/or the 3rd circular protrusion 33 use elastomeric material system
Into.One or two in both is arranged into elastomeric material to be made, can conveniently when mounted, by the 3rd circular protrusion
33 squeeze into the 4th sub- inner chamber via second circular protrusion 204.
Present invention also offers a kind of air-channel system of medicine equipment, contain Pressure Relief Valve as described above, the pressure
Power bleeder valve is horizontal positioned.Wherein, the medical instrument system is preferably Anesthesia machine or lung ventilator.
In summary, the invention provides a kind of Pressure Relief Valve, by setting valve element support member, tool is effectively solved
There is the Pressure Relief Valve of valve element the problem of control accuracy is low caused by during being horizontally mounted due to being influenceed by valve element gravity,
It ensure that Pressure Relief Valve can be horizontally mounted, so can save more operating spaces for user, and be horizontally mounted and also make
The operational control of Pressure Relief Valve more meets general operating habit, may be applicable to high-precision control medicine equipment or
In other field.
Secondly, valve element is using light weight and the material with self-lubricity is made, and can further reduce gravity influence, improve pressure
The control accuracy of power bleeder valve.
Furthermore, the surface that valve element support member is contacted with valve element uses high smooth finish surface, can further reduce valve element and valve element
Frictional force between support member, improves control accuracy of the Pressure Relief Valve when being horizontally mounted.
In addition, the present invention can be quantitatively controlled the Opening pressure of Pressure Relief Valve also by setting governor motion.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims
Scope.
Claims (27)
1. a kind of Pressure Relief Valve, it is characterised in that including：
Valve body, the valve body has a first inner chamber opened up along the valve body bearing of trend and connected with the first inner chamber
Air inlet and exhaust outlet；
Valve element support member, bearing of trend of the valve element support member along the valve body is fixed in the first inner chamber；And
Valve element, is connected between the valve element and the valve element support member by axis hole gap, and the valve element can be along described
The bearing of trend of valve body is slided relative to the valve element support member, and the valve element is used to block the air inlet or makes the air inlet
Mouth between the first inner chamber with connecting.
2. a kind of Pressure Relief Valve according to claim 1, it is characterised in that the valve element support member has one to prolong along it
The second inner chamber that direction is opened up is stretched, a part for the valve element is equipped with the second inner chamber by axis hole gap.
3. a kind of Pressure Relief Valve according to claim 1, it is characterised in that the valve element has one to extend along direction
The 3rd inner chamber opened up a, part for the valve element support member is equipped with the 3rd inner chamber by axis hole gap.
4. a kind of Pressure Relief Valve according to claim 2, it is characterised in that also including flexible member, the elasticity member
Part is arranged in the first inner chamber；When being slided when the valve element towards the direction away from the air inlet, the flexible member quilt
The valve element compression, is connected between the air inlet and first inner chamber；When the flexible member recovers deformation, the valve element exists
Slided in the presence of the flexible member towards the direction of the close air inlet and block the air inlet.
5. a kind of Pressure Relief Valve according to claim 2, it is characterised in that the valve body includes the first bonnet, valve casing
With the second bonnet, one end of the valve casing is connected with first bonnet, and the other end of the valve casing connects with second bonnet
Connect, first bonnet, valve casing and the second bonnet enclose to form the first inner chamber, the air inlet is opened in second valve
Cover and connected with the first inner chamber, the exhaust outlet is opened on the side wall of the valve casing and connected with the first inner chamber
It is logical.
6. a kind of Pressure Relief Valve according to claim 5, it is characterised in that first bonnet and the one of the valve casing
End is detachably connected, and the other end of second bonnet and the valve casing is detachably connected or integrated setting.
7. a kind of Pressure Relief Valve according to claim 5, it is characterised in that also described including flexible member and regulation
The governor motion of deformation of elastic components amount, the governor motion is connected through first bonnet and with the valve element support member；
The flexible member is arranged in the first inner chamber, and the two ends of the flexible member are respectively arranged at the governor motion and institute
State on valve element, when being slided when the valve element towards the direction away from the air inlet, the flexible member is compressed by the valve element, institute
State and connected between air inlet and first inner chamber；When the flexible member recovers deformation, the valve element is in the flexible member
Slided under effect towards the direction of the close air inlet and block the air inlet.
8. a kind of Pressure Relief Valve according to claim 7, it is characterised in that the flexible member is spring, the bullet
Spring is sheathed on the valve element support member and the valve element, and its two ends is respectively arranged on the governor motion and the valve element.
9. a kind of Pressure Relief Valve according to claim 8, it is characterised in that the valve element includes valve rod and is arranged at
The bonnet of described valve rod one end a, part for the valve rod is equipped with the second inner chamber by axis hole gap, described
Another part of valve rod and the bonnet extend the second inner chamber, and the flexible member is sheathed on the valve element support member
On the valve rod, one end of the flexible member is arranged on the bonnet, and the other end is arranged on the governor motion, institute
Stating bonnet is used to block the air inlet or make to connect between the air inlet and the first inner chamber.
10. a kind of Pressure Relief Valve according to claim 9, it is characterised in that the valve casing is close to second bonnet
End have a connecting interface, the connecting interface two ends are connected with the first inner chamber and the air inlet respectively, described
Bonnet is used to block the connecting interface or make to connect between the connecting interface and the first inner chamber.
11. a kind of Pressure Relief Valve according to claim 10, it is characterised in that the first inner chamber connects with described
The interface of mouth is provided with one first circular protrusion, and the bonnet is cylinder, and the diameter of first circular protrusion is more than institute
State connecting interface diameter and less than the bonnet diameter, the bonnet be used for first circular protrusion it is in sealing contact or
Separate and do not contact with first circular protrusion.
12. a kind of Pressure Relief Valve according to claim 8, it is characterised in that the governor motion include adjustment portion and
Rotating part, one end of the adjustment portion is installed on one end of the rotating part through first bonnet, the rotating part it is another
One end is connected with the valve element support member, and the other end of the rotating part is provided with a groove matched with the flexible member,
The other end of the flexible member is arranged in the groove, and the adjustment portion makes it along the valve for adjusting the rotating part
The axial direction of body is moved back and forth.
13. a kind of Pressure Relief Valve according to claim 12, it is characterised in that the adjustment portion includes regulation damping ring
And adjusting rod, one end of the adjusting rod is installed on one end of the rotating part, the regulation damping through first bonnet
Ring set is on the other end of the adjusting rod.
14. a kind of Pressure Relief Valve according to claim 12, it is characterised in that the rotating part is supported with the valve element
Part integrated setting.
15. a kind of Pressure Relief Valve according to claim 12, it is characterised in that the rotating part outer surface is provided with outer spiral shell
Line, the first inner chamber has the internal thread matched with the external screw thread, the interior spiral shell close to the part of first bonnet
The length of line is more than the externally threaded length, and the rotating part is connected with the valve body screw thread, and the adjustment portion is used to adjust
The rotation of the rotating part.
16. a kind of Pressure Relief Valve according to claim 15, it is characterised in that the rotating part is close to the portion of its one end
A hole is separately provided with, the shape and size of one end of the adjustment portion and the shape and size of described hole match and run through
First bonnet is arranged in described hole, and one end of the adjustment portion is rotated for driving the rotating part to rotate.
17. a kind of Pressure Relief Valve according to claim 16, it is characterised in that the shape of cross section of described hole is ellipse
Circular, regular polygon or irregular shape.
18. a kind of Pressure Relief Valve according to claim 1, it is characterised in that the valve element uses polytetrafluoroethylene (PTFE), Buddhist nun
One or more in dragon and polyformaldehyde are mixed.
19. a kind of Pressure Relief Valve according to claim 1, it is characterised in that the valve element support member and the valve element
The surface roughness Rz values on the surface of contact are less than 3.2 microns.
20. a kind of Pressure Relief Valve according to claim 1, it is characterised in that the valve element and the valve element support member
Between axis hole gap coordinate gap width be 0-0.15mm.
21. a kind of Pressure Relief Valve according to claim 2, it is characterised in that the second inner chamber is stepped cylindrical
Body, it includes along the valve body bearing of trend and the 4th sub- inner chamber away from the air inlet and the 5th close to the air inlet
Sub- inner chamber, the diameter of the 5th sub- inner chamber is more than the diameter of the 4th sub- inner chamber, and a part for the valve element passes through axis hole
Gap is equipped with intracavitary in the 4th sub- inner chamber and the 5th son.
22. a kind of Pressure Relief Valve according to claim 21, it is characterised in that the 5th sub- inner chamber and the described 4th
Also include intermediate location between sub- inner chamber, the diameter of the intermediate location gradually becomes along the direction close to the 4th sub- inner chamber
It is small.
23. a kind of Pressure Relief Valve according to claim 21, it is characterised in that the 5th sub- inner chamber is away from described
The part of four sub- inner chambers is provided with one second circular protrusion, and the diameter of second circular protrusion is equal to the straight of the 4th sub- inner chamber
Footpath.
24. a kind of Pressure Relief Valve according to claim 23, it is characterised in that the institute in the 5th sub- inner chamber
The outer surface for stating valve element is provided with one the 3rd circular protrusion, and the diameter of the 3rd circular protrusion is more than second circular protrusion
Diameter.
25. a kind of Pressure Relief Valve according to claim 24, it is characterised in that second circular protrusion and/or institute
State the 3rd circular protrusion flexible.
26. a kind of air-channel system of medicine equipment, contains the Pressure Relief Valve as described in claim any one of 1-25, the pressure
Power bleeder valve is horizontal positioned.
27. a kind of air-channel system of medicine equipment according to claim 26, it is characterised in that the medical instrument system
For Anesthesia machine or lung ventilator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710592166.0A CN107237906B (en) | 2017-07-19 | 2017-07-19 | Pressure relief valve and medical instrument's gas circuit system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710592166.0A CN107237906B (en) | 2017-07-19 | 2017-07-19 | Pressure relief valve and medical instrument's gas circuit system |
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| CN107237906A true CN107237906A (en) | 2017-10-10 |
| CN107237906B CN107237906B (en) | 2024-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710592166.0A Active CN107237906B (en) | 2017-07-19 | 2017-07-19 | Pressure relief valve and medical instrument's gas circuit system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108758038A (en) * | 2018-08-17 | 2018-11-06 | 上海宝亚安全装备股份有限公司 | A kind of respirator concealed safety valve gear |
| CN110594218A (en) * | 2019-07-15 | 2019-12-20 | 无锡市汉为液压气动有限公司 | Expansion valve core, hydraulic lock structure with expansion valve core and sealing method of hydraulic lock structure |
| WO2021134355A1 (en) * | 2019-12-30 | 2021-07-08 | 深圳迈瑞生物医疗电子股份有限公司 | Pressure limiting valve and anesthesia machine |
| EP3895752A1 (en) * | 2020-04-15 | 2021-10-20 | Hospital Sant Joan de Deu | Respirator valve |
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| CN110594218A (en) * | 2019-07-15 | 2019-12-20 | 无锡市汉为液压气动有限公司 | Expansion valve core, hydraulic lock structure with expansion valve core and sealing method of hydraulic lock structure |
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