CN202223712U - Low pressure alarm valve - Google Patents
Low pressure alarm valve Download PDFInfo
- Publication number
- CN202223712U CN202223712U CN2011203723288U CN201120372328U CN202223712U CN 202223712 U CN202223712 U CN 202223712U CN 2011203723288 U CN2011203723288 U CN 2011203723288U CN 201120372328 U CN201120372328 U CN 201120372328U CN 202223712 U CN202223712 U CN 202223712U
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- Prior art keywords
- valve
- low pressure
- valve body
- diaphragm
- flow path
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- Expired - Fee Related
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Abstract
The utility model relates to a low pressure alarm valve on a breathing machine. The low pressure alarm valve comprises a valve upper cover, a valve body and a valve lower cover, wherein a pneumatic actuator is arranged on the upper side of the valve body; the pneumatic actuator and the upper part of the valve body form an air chamber; a first spring is sleeved in the valve upper cover and is pressed against the pneumatic actuator; a valve rod and an air flow path are arranged in the valve body; the valve lower cover is provided with an air pipeline which is butted with the air flow path of the valve body; a conical valve core is arranged at the lower end of the valve rod; a second spring is sleeved on the lower part of the conical valve core and is butted against the air pipeline of the valve lower cover; a joint of the valve lower cover and the air flow path of the valve body is clamped with an X-ring which is positioned on the upper side of the conical valve core and is attached to a conical surface; the upper end of the valve rod extends into the air chamber and is butted against the pneumatic actuator; and the air outlet pipeline of the air flow path of the valve body is provided with a low pressure alarm mechanism. The low pressure alarm valve has the advantages of small flow resistance of the valve core, precise alarm and small errors.
Description
Technical field
This utility model relates to medical breathing machine, particularly relates to a kind of air pressure and sends the low pressure alarming valve of warning when on the low side.
Background technology
Respirator of the prior art generally adopts the electronic control low-pressure alarm device, needs the power supply power supply, and needs electronic device such as pressure transducer to combine with single-chip microcomputer, so limited by Power Supplies Condition, can not be used for the respirator of pneumatic gas-control.
CN200910064434 discloses a kind of Pneumatic pressure low-pressure alarming device; Said device comprises that pressure detecting mechanism, microswitch valve and alarm mechanism three parts are through threeway; From source of the gas output two-way gas; One the road delivers to the gas source inlet detection bleed pressure of pressure-detecting device, and the driving air-flow of the gas source air inlet of microswitch valve as alarm device delivered on another road.Its weak point is that the movable resistance of spool is big, valve body structure big, the warning error is big.
Summary of the invention
The purpose of this utility model is to overcome the deficiency of prior art, provides the little movable resistance of a kind of valve core diameter little low pressure alarming valve.
The technical solution of this utility model is: this low pressure alarming valve comprises valve upper cover, valve body, valve lower cover; Said valve body top is equipped with pneumatic actuator, and air chamber is formed at this pneumatic actuator and valve body top, is with first spring in the said valve upper cover and is connected on the pneumatic actuator; Be provided with valve rod and gas flow path in the said valve body; Its special character is, is covered with the gas piping that docks with the gas flow path of valve body under the said valve, and the bottom of valve rod is provided with taper valve core; Second spring housing is located under the taper valve core and valve lower cover gas piping butt; The joint card of valve lower cover gas piping and valve body gas flow path is established the star-like circle that is positioned at taper valve core top and fits with taper surface, and said valve rod upper end is stretched into air chamber and is connected on the pneumatic actuator, and the gas flow path outlet pipe of said valve body is provided with low pressure alarming mechanism.
As preferably: said low pressure alarming mechanism comprises the vapour lock, vapour lock sealing ring, the vapour lock cover plate that link to each other with the gas flow path outlet pipe of valve body, is fixed on the duckbilled flap valve on the vapour lock cover plate and covers on the lid on the duckbilled flap valve.
As preferably: said pneumatic actuator is made up of diaphragm, diaphragm screw, diaphragm nut, and wherein the diaphragm screw passes diaphragm and the diaphragm nut is fastening.
As preferably: the upper end of said valve rod is provided with little prominent circle, and little prominent circle top cover is useful on the O type circle of avoiding gas to leak into valve body.
As preferably: said valve upper cover, valve lower cover are connected with the valve body screw respectively.
As preferably: said valve upper cover one side has an aperture.
It is little that the spool of this utility model has a diameter, the advantage that movable resistance is little, little to air resistance, said low pressure alarming valve have report to the police accurately, advantage that error is little.
Description of drawings
Fig. 1 is the exploded view of this utility model low pressure alarming valve.
Fig. 2 is the profile of this utility model low pressure alarming valve.
The primary clustering symbol description:
The star-like circle of the little prominent circle of valve upper cover 1 valve body 2 valve lower covers 3 gas pipings 31 valve rods 4 taper valve cores 41 42 gas flow paths, 5 pneumatic actuator 6 diaphragms, 61 diaphragm screw 62 diaphragm nuts, 63 pore 7 first springs, 8 second springs 9 10 low pressure alarming mechanisms 11 vapour locks, 111 vapour lock sealing rings, 112 vapour lock cover plates, 113 duckbilled flap valves, 114 lids, 115 O type circles, 12 apertures, 13 screws 14.
The specific embodiment
This utility model is done further detailed description below in conjunction with accompanying drawing:
See also Fig. 1, shown in Figure 2; This low pressure alarming valve comprises valve upper cover 1, valve body 2, valve lower cover 3; Be provided with valve rod 4, gas flow path 5 in the said valve body 2; Said valve body 2 tops are equipped with the pneumatic actuator of being made up of diaphragm 61, diaphragm nut 63, diaphragm screw 62 6; Wherein diaphragm screw 62 passes diaphragm 61 and fixes said pneumatic actuator 6 and valve body 2 tops formation air chamber with diaphragm nut 63.Said air chamber one side is provided with pore 7, is used to import gas.Be provided with first spring 8 in the said valve upper cover 1; First spring 8 is connected on the diaphragm nut 63; Said valve lower cover 3 is provided with the gas piping 31 that docks with the gas flow path 5 of valve body 2, and said valve rod 4 bottoms are provided with taper valve core 41, and second spring 9, valve rod 4 upper ends that taper valve core 41 lower end suits are connected on the gas piping 31 of valve lower cover 3 are provided with little prominent circle 10; Be with on the little prominent circle 10 and prevent that gas from leaking into the O type circle 12 in the valve body 2, air chamber is stretched in valve rod 4 upper ends.The gas flow path 5 outlet pipe places of valve body 2 are provided with by the vapour lock that links to each other with outlet pipe 111, vapour lock sealing ring 112, vapour lock cover plate 113, are fixed on the duckbilled flap valve 114 on the vapour lock cover plate 113 and cover on the low pressure alarming mechanism 11 that the lid 115 on the duckbilled flap valve 114 is formed.Said valve upper cover 1 one sides have an aperture 13, and when gas compressing diaphragm 61, the gas of diaphragm 61 tops is discharged from aperture 13.Diaphragm screw 62 on the said diaphragm 61, diaphragm nut 63 have been avoided the damage of first spring 8 and 4 pairs of diaphragms 61 of valve rod, and said valve upper cover 1, valve lower cover 3 are connected with valve body 2 through screw 14 respectively.
Operation principle: the low pressure alarming valve is when original state, and valve rod 4 is under the Spring balanced effect of first spring 8, second spring 9, and diaphragm unit 6 presses down valve rod 4, and the taper valve core 41 of valve rod 4 bottoms breaks away from star-like circle 10, and the low pressure alarming valve is in opening state; After gas feeds from the pore on valve body 2 tops 7; When the elastic force that is not enough to overcome first spring 8 upwards draws high; Diaphragm unit 6 still presses down valve rod 4, and the taper valve core 41 of valve rod 4 bottoms still breaks away from star-like circle 10, and the low pressure alarming valve is in opening state; Gas flow path 5 gas outlets that the air communication that feeds from valve lower cover 3 is crossed valve body 2 are imported the duckbilled flap valve into through vapour lock and are spread out of the gas song, produce and report to the police; When gas pressure overcomes the elastic force of first spring 8, diaphragm unit 6 moves up, and valve rod 4 moves up under the elastic force effect of second spring 9, and taper valve core 41 is fitted with star-like circle 10, blocks the gas passage, and low pressure alarming mechanism 11 does not have the air flow stream mistake, does not report to the police.The elastic force of said first spring 8 is regulated according to the pressure limit that need detect.
The above is merely the preferred embodiment of this utility model, and all equalizations of being done according to this utility model claim scope change and modify, and all should belong to the covering scope of this utility model claim.
Claims (6)
1. low pressure alarming valve; Comprise valve upper cover, valve body, valve lower cover, said valve body top is provided with pneumatic executive module, and air chamber is formed at this pneumatic actuator and valve body top; Being set with first spring in the said valve upper cover is connected on the pneumatic executive module; Be provided with spool and gas flow path in the said valve body, it is characterized in that: be covered with the gas piping that docks with the gas flow path of valve body under the said valve, spool is formed by bar, with the integrated bullet of this bar; Second spring housing be located on the cylinder of spool bullet lower end and with the circular heavy stand butt of valve lower cover; Valve lower cover and valve body faying face are provided with the star-like sealing ring that fits with spool bullet surface, and said spool upper end is stretched into air chamber and is connected on the pneumatic executive module, and the gas flow path outlet pipe of said valve body is provided with low pressure alarming mechanism.
2. low pressure alarming valve according to claim 1 is characterized in that: said low pressure alarming mechanism comprises the O RunddichtringO that links to each other successively with the gas flow path outlet pipe of valve body, vapour lock, O RunddichtringO, cover plate, with the duckbilled flap valve of cover plate interference fit and cover on the lid on the duckbilled flap valve.
3. low pressure alarming valve according to claim 1 is characterized in that: said pneumatic actuator is made up of diaphragm, diaphragm screw, diaphragm nut, and wherein the diaphragm screw passes diaphragm and the diaphragm nut is fastening.
4. low pressure alarming valve according to claim 3 is characterized in that: the position, the center of circle of said diaphragm screw is provided with a concave spherical surface, and the head end of spool top corresponding diaphragm screw concave spherical surface is a hemisphere.
5. low pressure alarming valve according to claim 1 is characterized in that: the middle-end of said valve rod radially is shaped to the prominent circle of convex hoop shape, and prominent circle top is with the O RunddichtringO of isolating air chamber and gas flow path; Said prominent circle is used to prevent coming off of O RunddichtringO.
6. low pressure alarming valve according to claim 1 is characterized in that: said valve upper cover one side has an aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203723288U CN202223712U (en) | 2011-09-28 | 2011-09-28 | Low pressure alarm valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203723288U CN202223712U (en) | 2011-09-28 | 2011-09-28 | Low pressure alarm valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202223712U true CN202223712U (en) | 2012-05-23 |
Family
ID=46074323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203723288U Expired - Fee Related CN202223712U (en) | 2011-09-28 | 2011-09-28 | Low pressure alarm valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202223712U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111188943A (en) * | 2020-03-03 | 2020-05-22 | 中国船舶重工集团公司第七0七研究所九江分部 | Mechanical pneumatic pressure alarm device |
-
2011
- 2011-09-28 CN CN2011203723288U patent/CN202223712U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111188943A (en) * | 2020-03-03 | 2020-05-22 | 中国船舶重工集团公司第七0七研究所九江分部 | Mechanical pneumatic pressure alarm device |
| CN111188943B (en) * | 2020-03-03 | 2021-08-20 | 中国船舶重工集团公司第七0七研究所九江分部 | Mechanical pneumatic pressure alarm device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20140928 |
|
| EXPY | Termination of patent right or utility model |