CN201888980U - Adjustable pressure relief valve and anaesthesia apparatus - Google Patents
Adjustable pressure relief valve and anaesthesia apparatus Download PDFInfo
- Publication number
- CN201888980U CN201888980U CN2010205565890U CN201020556589U CN201888980U CN 201888980 U CN201888980 U CN 201888980U CN 2010205565890 U CN2010205565890 U CN 2010205565890U CN 201020556589 U CN201020556589 U CN 201020556589U CN 201888980 U CN201888980 U CN 201888980U
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- valve
- guide groove
- spool
- adjustable pressure
- relief valve
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Abstract
The utility model discloses an adjustable pressure relief valve, which comprises a spool assembly and a valve body assembly, wherein the spool assembly is arranged inside the valve body assembly. The spool assembly is composed of a spool, a valve sheet, a valve rod and an elastic body, the valve rod is connected with the valve sheet and the elastic body is arranged between the valve rod and the spool. A pin is arranged on the outer surface of the spool. A nonlinear spiral guiding groove, which is arranged on the inner wall of the valve body of the valve body assembly or on a guiding sleeve of the spool assembly, guides the spool assembly to move. The adjustable pressure relief valve can improve adjusting accuracy of the target pressure relief range. Since the spool assembly and the valve body assembly can be combined into a whole, the adjustable pressure relief valve is convenient to be installed and adjusted.
Description
Technical field
This utility model relates to a kind of pressure-relief valve of adjustable pressure, especially a kind of pressure-relief valve of non-linear adjusting.
Background technology
Adjustable pressure-relief valve (being called for short the APL valve) is an adjustable valve of putting pressure that unloads that is applied to the respiratory system of anesthetic machine or respirator.Under manual mode, control is unloaded and is put pressure and should be no more than 125cmH in theory
2O commonly used the highlyest unloads that to put pressure be 70cmH
2O～75cmH
2O, and clinically, the doctor uses always unloads that to put pressure be 20cmH
2O～30cmH
2O, when unloading of surpass setting put pressure, valve should be able to be opened at once to unload and put, and avoided the patient airway hypertonia and damaged.
Existing APL valve unloads puts pressure and the spool lift is linear, and as shown in Figure 1, promptly the guide groove helical pitch of guide spool spiral lifting is constant, is similar to regular screw threads, and this APL valve is in design and make all comparatively easy.This kind APL valve is divided into two kinds of forms, and a kind of is that adjusting knob is finished the total travel adjusting within a circle, but at 30cmH
2Unload below the O that to put the pressure limit degree of regulation low, can not guarantee the degree of regulation in the total travel like this, another is that adjusting knob needs the multi-turn rotation just can finish the total travel adjusting, can guarantee good degree of regulation in the total travel, but regulate inconveniently, and do not meet within a circle, finishing total travel and regulating laws and regulations requirement of some zone.
Therefore, need a kind of can the circle with the interior total travel of finishing of exploitation to regulate, unload in low pressure and put the high adjustable pressure-relief valve of pressure limit degree of regulation one.
Summary of the invention
In order to solve the problems of the technologies described above, adjustable pressure-relief valve design of the present utility model has non-linear helical guide groove, can improve target and unload and put pressure limit degree of regulation, for example 30cmH
2The degree of regulation of the following release scope of O.
The utility model discloses a kind of adjustable pressure-relief valve, comprise core assembly and valve component, core assembly is positioned at valve component, valve component comprises valve body and valve seat, core assembly comprises spool, valve block, the valve rod that is connected with valve block and the elastomer between valve rod and spool, valve core outer surface has pin, core assembly also comprises the guide groove cover, spool is installed in the guide groove cover, guide groove is arranged with nonlinear helical guide groove, pin cooperates with helical guide groove, and the motion of spool is led, and wherein nonlinear helical guide groove is divided at least two sections groove sections.
The utility model discloses another kind of adjustable pressure-relief valve, comprise core assembly and valve component, core assembly is positioned at valve component, core assembly comprises spool, valve block, the valve rod that is connected with valve block and the elastomer between valve rod and spool, and valve core outer surface has pin, and valve component comprises valve body and valve seat, the inwall of valve body has nonlinear helical guide groove, pin cooperates with helical guide groove, and valve core movement is led, and wherein nonlinear helical guide groove is divided at least two sections groove sections.
Preferably, between valve rod and guide groove cover or between valve rod and the valve body sealing member is installed, isolate valve block and spool.
The utility model discloses a kind of core assembly of adjustable pressure-relief valve, comprise spool, valve block, the valve rod that is connected with valve block and the elastomer between valve rod and spool, valve core outer surface has pin, core assembly also comprises the guide groove cover, spool is installed in the guide groove cover, and guide groove is arranged with nonlinear helical guide groove, and pin cooperates with helical guide groove, motion to spool is led, and wherein nonlinear helical guide groove is divided at least two sections groove sections.
The invention also discloses a kind of anesthetic machine or respirator, used above-mentioned adjustable pressure-relief valve.Preferably, the valve seat of this adjustable pressure-relief valve and anesthetic machine or respirator releasable connection make adjustable pressure-relief valve to be connected with anesthetic machine or respirator with plugging.
After adopting such structure, adjustable pressure-relief valve of the present utility model has these benefits: 1. owing to adopted non-linear helical guide groove, the ratio that can improve some release pressure limit spool anglec of rotation and spool lift becomes big, and it is better to make valve regulate the precision of pressure in these scopes; 2. used independent guide groove cover, reduced on the one hand the difficulty of processing of part, the also convenient on the other hand sealing member of installing is isolated gas circuit and valve core movement part, prolongs valve service life; 3. core assembly and valve component can form an integral body, can independent dismounting, be convenient to installation, test, calibration, maintenance, replacing and the sterilization of adjustable pressure-relief valve.
Description of drawings
Fig. 1 is that the adjustable pressure-relief valve of prior art unloads the relation of putting pressure and spool lift.
Fig. 2 is that the adjustable pressure-relief valve of an embodiment of the present utility model unloads the relation of putting pressure and spool lift.
Fig. 3 is the guide groove cover and the spool sketch map of the adjustable pressure-relief valve of an embodiment of the present utility model.
Fig. 4 is the adjustable pressure-relief valve structural representation of an embodiment of the present utility model.
Fig. 5 is the explosive view of the adjustable pressure-relief valve of an embodiment of the present utility model.
The specific embodiment
Below in conjunction with the drawings and specific embodiments this utility model is further described.
As Fig. 3～shown in Figure 5, the adjustable pressure-relief valve of a specific embodiment of this utility model, comprise core assembly 3 and valve component 6, core assembly 3 is positioned at valve component 6, valve component 6 comprises valve body 601 and valve seat 603, core assembly 3 comprises spool 305, valve block 301, the valve rod 308 that is connected with valve block 301, the spring 304 between valve rod 308 and spool 301, pin 306 is arranged outside the spool 301, also comprise guide groove cover 303, guide groove cover 303 is provided with nonlinear helical guide groove 307, pin 306 slides along helical guide groove 307, and the motion of spool is led.The said nonlinear helical guide groove of this paper is divided at least two sections groove sections, in at least one groove section, spool is different with the ratio described in the adjacent slot section with the ratio of the lift of spool along the angle of helical guide groove rotation, promptly as shown in Figure 2, the variation of the ratio of the anglec of rotation and spool lift is discontinuous, and is nonlinear.
As shown in Figure 3, columnar guide groove overlaps 303 Surface Machining non-linear helical guide groove 307, and the pin 306 on the spool 305 is realized the axial lifting of spool and the compound motion that rotates in a circumferential direction under the guiding of guide groove 307.Guide groove 307 and pin 306 can be one, also can be a plurality of.Preferably, guide groove overlaps 303 surperficial symmetries and processes two guide grooves 307, and two pins should be arranged on the spool 305 mutually, makes the motion of spool more steady.
As shown in Figure 5, the valve component 6 of the adjustable pressure-relief valve of a specific embodiment of the present utility model comprises valve body 601 and valve seat 603, and valve seat 603 is fixedlyed connected with valve body 601, can fix by screw, also can be one-body molded.Valve port 605 is arranged on the valve seat 603, and after core assembly 3 was installed to valve component 6, valve block 301 was over against valve port 605.There is first sealing ring 602 valve body 601 outers, and there is second sealing ring 604 valve seat 603 outers, the sealing when being used for adjustable pressure-relief valve and can inserting gas return path with plugging.When the pressure in the gas return path was put pressure greater than unloading of setting, air pressure backed down valve block 301, discharges gas, and pressure descends in the gas return path, and valve block 301 is pushed down valve port 605 under spring 304 elastic force effects, stop gas release.It will be understood by those skilled in the art that the spring 304 here can use other can produce elastic material replacement, as long as can produce suitable elastic force, guarantees that the folding of valve block gets final product.
As shown in Figure 2, the adjustable pressure-relief valve of a specific embodiment of this utility model, non-linear helical guide groove forms nonlinear helical pitch, and it unloads pressure and the non-linear relation of spool lift of putting.Adjusting knob can be in a circle (360 °) finish total travel and regulate, promptly the guide groove helical pitch of guide spool spiral lifting changes, in some release pressure limit, the ratio of the angle that spool rotates along guide groove and the lift of spool is greater than the ratio of other release scopes.For example from 30cmH
2The O place changes, 30cmH
2The following scope helical pitch of O is less, 30cmH
2The above scope helical pitch of O is bigger, so Dui Ying 30cmH
2The following range regulation angle of O can increase more, helps improving 30cmH
2Unload the degree of regulation of the scope of putting below the O.Because the release pressure limit that the doctor uses always is 20cmH
2O～30cmH
2O also can just increase the ratio of this scope spool along the lift of the angle of guide groove rotation and spool.Based on same principle, those skilled in the art can strengthen the anglec of rotation and the ratio of spool lift in the scope that oneself needs as required, improve the interior pressure degree of regulation of this scope.
As shown in Figure 5, the adjustable pressure-relief valve of another specific embodiment of the present utility model is equipped with sealing member between valve rod and guide groove cover, isolate described valve block and spool.The sealing part can be a barrier film 302, on one side it is fixed in valve rod 308, another side is fixed in guide groove cover 303; Also can use the structure of sealing ring or sealing gasket, for example, add the gap that dwindles guide groove cover 307 and valve rod 308 man-hour, use the sealing ring sealing.Sealing member is kept apart APL valve top and the bottom, has avoided dust, mucus to enter the gap of moving component, hinders the motion even the stuck moving component of part, prolongs the service life of valve.
With reference to figure 4 and Fig. 5, the adjustable pressure-relief valve of another specific embodiment of the present utility model can not use independent guide groove cover, and nonlinear helical guide groove 307 is processed on other parts, for example open inwall, as long as have guide effect at valve body 601.This adjustable pressure-relief valve, comprise core assembly 3 and valve component 6, core assembly 3 is positioned at valve component 6, core assembly 3 comprises spool 305, valve block 301, the valve rod 308 that is connected with valve block, and the elastomer 304 between valve rod 308 and spool 305, valve core outer surface has pin 306, valve component 6 comprises valve body 601 and valve seat 603, the inwall of valve body 601 has nonlinear helical guide groove 307, pin 306 cooperates with helical guide groove 307, valve core movement is led, wherein nonlinear helical guide groove is divided at least two sections groove sections, in at least one groove section, spool is different with the ratio described in the adjacent slot section with the ratio of the lift of spool along the angle of helical guide groove rotation.In this adjustable pressure-relief valve, can between valve body 601 and valve rod 308, sealing member be installed, APL valve top and the bottom are kept apart, avoid dust, mucus to enter the gap of moving component, hinder the motion even the stuck moving component of part, prolong the service life of valve.Described sealing member can be barrier film, sealing ring or sealing gasket.
As shown in Figure 4 and Figure 5, the adjustable pressure-relief valve of a specific embodiment of this utility model uses axial limiting spare, and core assembly 3 and valve component 6 are connected to form monolithic construction.Valve rod 308 and guide groove cover 303 is connected by barrier film 302, and the guide groove of behind the spring 304 of packing into spool 305 being packed into overlaps 303, is assembled into core assembly 3.Core assembly 3 is packed in the valve body 601 of valve component 6, and guide groove 303 covers are resisted against the interior along last of valve body 601.Axial limiting spare, for example locating snap ring 2, pass spool 305, and push down guide groove cover 303, are screwed at valve body 601, with the core assembly axial limiting and be fixed in the valve component, form monolithic construction.Also can use other axial limiting spare, for example pad, or screw is as long as can be fixed in the valve body core assembly is spacing.Can also annular flange be set on valve body, be used to install knob 1.
The adjustable pressure-relief valve that assembling forms, insert mimic gas return path after, just can test the performance of this adjustable pressure-relief valve, and mark the release force value (promptly calibrating) of knob diverse location correspondence, and needn't insert anesthetic machine or respirator.This all-in-one-piece structure can independent dismounting, also is convenient to install, test, calibration, maintenance, changes and sterilization.
With reference to Fig. 4, the adjustable pressure-relief valve of a specific embodiment of the present utility model is realized to unloading the adjustment process of putting pressure being: by the rotation of knob 1, drive spool 305 and produce the motion that rotates in a circumferential direction, be subjected to the guiding of guide groove cover 303, when turning clockwise, spool 305 also will descend except that rotating in a circumferential direction clockwise vertically, so just compressed spring 304, the spring pressure that acts on the valve rod 308 is increased, and valve port 605 and the corresponding increase of valve block 301 contact pressures have improved to unload and have put pressure; Otherwise when being rotated counterclockwise, spool 305 also will rise except that rotating in a circumferential direction counterclockwise vertically, so just discharged spring 304, the pressure of the spring 304 that acts on the valve rod 308 is reduced, and valve port 605 and corresponding the reducing of valve block 301 contact pressures have reduced to unload and have put pressure.
As shown in Figures 2 and 3, owing to adopted non-linear guide groove, unload the scope of putting (30cmH for example in low pressure
2Unload the scope of putting below the O) increased the anglec of rotation of knob 1.Compare with existing adjustable pressure-relief valve shown in Figure 1, unload in low pressure and to put the same angle of scope knob 1 rotation, the spool stroke of APL valve with non-linear guide groove is littler, and then spring 304 compressed distances are littler, improved the low pressure of APL valve like this and unloaded the degree of regulation of the scope of putting.
With reference to figure 5, the invention also discloses a kind of core assembly of adjustable pressure-relief valve, comprise spool 305, valve block 301, the valve rod 308 that is connected with valve block, and the elastomer 304 between valve rod 308 and spool 305, spool 305 outer surfaces have pin 306, core assembly also comprises guide groove cover 303, spool 305 is installed in the guide groove cover 303, guide groove cover 303 is provided with nonlinear helical guide groove 307, pin 306 cooperates with helical guide groove 307, motion to spool 305 is led, nonlinear helical guide groove wherein is divided at least two sections groove sections, in at least one groove section, spool is different with the ratio described in the adjacent slot section with the ratio of the lift of spool along the angle of helical guide groove rotation.Preferably, between valve rod 308 and guide groove cover 303 sealing member can also be installed, for example diaphragm 302, on one side it is fixed in valve rod 308, another side is fixed in guide groove cover 303.
The invention also discloses a kind of anesthetic machine or respirator, this anesthetic machine or respirator have comprised the core assembly of disclosed adjustable pressure-relief valve of this utility model or adjustable pressure-relief valve.Those skilled in the art can understand, the valve component of the disclosed adjustable pressure-relief valve of this utility model can fixedly mount or be one-body molded on the main body of anesthetic machine or respirator, when using, testing or calibrating core assembly is installed in the valve component, when replacing or sterilization, only take off core assembly.Valve component also can be separately as a part, and the main body of its valve seat and anesthetic machine or respirator is releasable connection, and valve component and core assembly are by above-mentioned mode, and assembling forms monolithic construction.After the adjustable pressure-relief valve of monolithic construction inserts anesthetic machine or respirator, by the sealing of first sealing ring and realization of second sealing ring and gas return path.When needs are changed or during sterilization, the APL valve pulled up from anesthetic machine or respirator get final product convenient use.Can use locking nut 4, the valve component 6 and the knob 1 of adjustable pressure-relief valve better is fixed on anesthetic machine or the respirator, unscrewing nut 4 can unload easily.
Adjustable pressure-relief valve of the present utility model owing to used non-linear helical guide groove, can improve the degree of regulation in some release pressure limit.Adjustable pressure-relief valve of the present utility model has used independently guide groove nested structure, is convenient to install sealing member to isolate gas circuit and valve motion parts, prolongs valve service life.Adjustable pressure-relief valve of the present utility model is assembled into monolithic construction with core assembly and valve component, forms independently element, is convenient to install, tests, calibrates, keeps in repair, changes and sterilization.
More than by specific embodiment this utility model is illustrated, but this utility model is not limited to these specific embodiments.It will be understood by those skilled in the art that and to make various modifications to the present invention, be equal to replacement, change or the like that these conversion all should be within protection scope of the present invention as long as do not deviate from spirit of the present invention.
Claims (13)
1. adjustable pressure-relief valve, comprise core assembly and valve component, described core assembly is positioned at valve component, described valve component comprises valve body and valve seat, described core assembly comprises spool, valve block, the valve rod that is connected with described valve block, and the elastomer between described valve rod and described spool, described valve core outer surface has pin, it is characterized in that: described core assembly also comprises the guide groove cover, described spool is installed in the described guide groove cover, described guide groove is arranged with nonlinear helical guide groove, described pin cooperates with described helical guide groove, and the motion of described spool is led, and wherein said nonlinear helical guide groove is divided at least two sections groove sections.
2. adjustable pressure-relief valve according to claim 1 is characterized in that: described spool is provided with two pins, and described guide groove is arranged with two nonlinear helical guide grooves.
3. adjustable pressure-relief valve according to claim 1 is characterized in that: between described valve rod and the described guide groove cover sealing member is installed, isolates described valve block and described spool.
4. adjustable pressure-relief valve according to claim 3 is characterized in that: described sealing member is a diaphragm, one side described diaphragm be fixed in described valve rod, the another side of described diaphragm is fixed in described guide groove cover.
5. adjustable pressure-relief valve, comprise core assembly and valve component, described core assembly is positioned at described valve component, described core assembly comprises spool, valve block, valve rod that is connected with described valve block and the elastomer between described valve rod and described spool, described valve core outer surface has pin, described valve component comprises valve body and valve seat, it is characterized in that: the inwall of described valve body has nonlinear helical guide groove, described pin cooperates with described helical guide groove, described valve core movement is led, and wherein said nonlinear helical guide groove is divided at least two sections groove sections.
6. adjustable pressure-relief valve according to claim 5 is characterized in that: described spool is provided with two pins, and described guide groove is arranged with two nonlinear helical guide grooves.
7. adjustable pressure-relief valve according to claim 5 is characterized in that: between described valve rod and the described valve body sealing member is installed, isolates described valve block and described spool.
8. the core assembly of an adjustable pressure-relief valve, it is characterized in that: described core assembly comprises spool, valve block, the valve rod that is connected with described valve block and the elastomer between described valve rod and described spool, described valve core outer surface has pin, it is characterized in that: described core assembly also comprises the guide groove cover, described spool is installed in the described guide groove cover, described guide groove is arranged with nonlinear helical guide groove, described pin cooperates with described helical guide groove, motion to described spool is led, and wherein said nonlinear helical guide groove is divided at least two sections groove sections.
9. adjustable pressure-relief valve according to claim 8 is characterized in that: between described valve rod and the described guide groove cover diaphragm is installed, one side described diaphragm be fixed in described valve rod, the another side of described diaphragm is fixed in described guide groove cover.
10. an anesthetic machine is characterized in that: comprise each described adjustable pressure-relief valve of claim 1-7 or claim 8 or 9 described core assemblies.
11. anesthetic machine according to claim 10 is characterized in that: the valve seat of described adjustable pressure-relief valve and described anesthetic machine are releasable connection, and described adjustable pressure-relief valve can be connected with described anesthetic machine with plugging.
12. a respirator is characterized in that: comprise each described adjustable pressure-relief valve of claim 1-7 or claim 8 or 9 described core assemblies.
13. respirator according to claim 12 is characterized in that: the valve seat of described adjustable pressure-relief valve and described respirator are releasable connection, and described adjustable pressure-relief valve can be connected with described respirator with plugging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205565890U CN201888980U (en) | 2010-10-09 | 2010-10-09 | Adjustable pressure relief valve and anaesthesia apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205565890U CN201888980U (en) | 2010-10-09 | 2010-10-09 | Adjustable pressure relief valve and anaesthesia apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201888980U true CN201888980U (en) | 2011-07-06 |
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ID=44218455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205565890U Expired - Lifetime CN201888980U (en) | 2010-10-09 | 2010-10-09 | Adjustable pressure relief valve and anaesthesia apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201888980U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103877658A (en) * | 2012-12-21 | 2014-06-25 | 通用电气公司 | Detachable inspiratory relief valve |
| CN115999010A (en) * | 2022-12-07 | 2023-04-25 | 深圳市普博医疗科技股份有限公司 | Adjustable pressure relief valve and assembly method thereof |
-
2010
- 2010-10-09 CN CN2010205565890U patent/CN201888980U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103877658A (en) * | 2012-12-21 | 2014-06-25 | 通用电气公司 | Detachable inspiratory relief valve |
| US9452275B2 (en) | 2012-12-21 | 2016-09-27 | General Electric Company | Detachable inspiratory relief valve |
| CN103877658B (en) * | 2012-12-21 | 2017-01-04 | 通用电气公司 | A kind of relief valve assembly |
| CN115999010A (en) * | 2022-12-07 | 2023-04-25 | 深圳市普博医疗科技股份有限公司 | Adjustable pressure relief valve and assembly method thereof |
| CN115999010B (en) * | 2022-12-07 | 2024-09-06 | 深圳市普博医疗科技股份有限公司 | Adjustable pressure relief valve and assembly method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110706 |
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| CX01 | Expiry of patent term | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhu Bin Document name: Notice of expiration of patent right |
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| DD01 | Delivery of document by public notice |