CN201469859U - Safety valve, respirator and anesthetic machine - Google Patents
Safety valve, respirator and anesthetic machine Download PDFInfo
- Publication number
- CN201469859U CN201469859U CN2009201730896U CN200920173089U CN201469859U CN 201469859 U CN201469859 U CN 201469859U CN 2009201730896 U CN2009201730896 U CN 2009201730896U CN 200920173089 U CN200920173089 U CN 200920173089U CN 201469859 U CN201469859 U CN 201469859U
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- valve
- valve body
- magnet
- spool
- gas
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Abstract
The embodiment of the utility model provides a safety valve. The safety valve comprises a valve body, a first magnet, and a second magnet, wherein the valve body is provided with an air channel, and a valve core arranged in the air channel for opening or closing the air channel; the first magnet is arranged in the valve body; the second magnet is arranged on the valve core for attracting the first magnet along the direction for closing the air channel; the air channel includes an upper cavity and a lower cavity; a valve port section is arranged between the upper cavity and the lower cavity; the valve core is arranged on the valve port section; and the contact surface between the valve core and the valve port is a planar surface. The utility model also provides a respirator and an anesthetic machine using the safety vale. The safety valve can keep balance air pressure in the air channel, and has good air tightness in the sealing state, thereby preventing the patient from being injured by the air pressure and achieving safe and reliable operation.
Description
Technical field
This utility model relates to a kind of relief valve, especially utilizes magnetic force to come medical relief valve and a kind of respirator and the anesthetic machine of adjustments of gas pressure.
Background technology
Generally, self ventilation appears or during the oxygenate dysfunction, majority is to adopt the means of mechanical ventilation to make the patient recover ventilation as the patient.In the mechanical ventilation process, if having foreign body in the gas circuit of anesthetic machine or respirator,, thereby make that the air pressure in the gas circuit is too high just then breathing circuit might be stopped up by foreign body, cause the air pressure patient harm, even threaten patient's life.
For the problems referred to above, general at present employing relief valve device solves.Known relief valve is a baroswitch, is made up of valve body, spool, valve spring, adjustment lid, tightening cover, gas passage, air inlet, gas outlet etc.When the gas pressure in the gas circuit surpassed limits value, gas can be discharged through the gas outlet and be reduced air pressure, to guarantee patient safety.Spool is as the functional component of unlatching in the relief valve with closed gas passage, and its quality influence is to the function of whole relief valve.The spool working surface is arc normally, arcual spool is because in uneven thickness, and material shrinks and very easily causes working surface deviation theory size after the injection moulding, causes spool can not closely contact with valve port, make the function of relief valve not reach designing requirement, thereby threaten patient's life and health.
The utility model content
The technical problems to be solved in the utility model provides a kind of relief valve, even it also can discharge gas with reduction air pressure under the very large situation of gas flow, thereby keep the gas pressure equilibrium in the gas circuit, when closure state, spool combines closely with valve port portion, and seal is preferable.For this reason, this utility model is by the following technical solutions:
A kind of relief valve is provided among the embodiment of the present utility model, has comprised: valve body, inside is provided with gas passage, and spool, is located in the gas passage of valve body, with the closure or openness gas passage, also comprises: first magnet is arranged in the valve body; And second magnet, be arranged on the spool, and attract first Magnet along the direction of closed institute body passage, the gas passage of valve body comprises epicoele, cavity of resorption, have the valve port portion between epicoele and cavity of resorption on the valve body, spool is arranged in the valve port portion, and the contact surface of spool and valve port is plane.
Preferably, also comprise valve gap, be arranged on the valve body, and the capping epicoele.
Preferably, valve gap is provided with the gas outlet of gas passage; The air inlet of gas passage is arranged on the valve body, is connected with cavity of resorption.
Preferably, the protruding ringwise lip shape of valve port.
Preferably, valve gap and valve body top interlocking; Have groove on the periphery of valve gap, valve body top interior week have convex tendon, the convex tendon of valve body embeds in the groove of valve gap.
Preferably, first Magnet is bonded and fixed at the bottom of valve body.
Also a kind of respirator of this utility model and anesthetic machine adopt above-mentioned relief valve.
This utility model is owing to the distance between magnetic force and two Magnet is inversely proportional to, distance between two Magnet is big more, magnetic force is more little, so when spool is opened the distance make between lower magnet when increasing gradually, the magnetic force that last lower magnet produced dies down gradually, make spool in opening process, not produce excessive pressure effect, thereby guaranteed the equilibrium of gas pressure in the gas circuit the gas in the gas circuit.When relief valve does not reach the opening pressure of setting, spool with closely cooperate with valve port portion, the air-tightness of relief valve is better, and when relief valve reaches the opening pressure of setting, spool and valve port part from, can guarantee that like this gas flow is more unobstructed, thereby avoid the generation of the situation of air pressure patient harm.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes the application's a part, and illustrative examples of the present utility model and explanation thereof are used to explain this utility model, do not constitute improper qualification of the present utility model.In the accompanying drawings:
Fig. 1 has schematically shown the structure according to the relief valve of an embodiment of the present utility model;
The embodiment that Fig. 2 has schematically shown relief valve among Fig. 1 along B-B to sectional structure;
Fig. 3 has schematically shown the valve cover structure according to the relief valve of an embodiment of this utility model.
The specific embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe this utility model in detail.
Fig. 1 has schematically shown the structure according to the relief valve of an embodiment of the present utility model, and as shown in Figure 1, relief valve of the present utility model comprises valve body 1, spool 2 and valve gap 4.The top of valve body 1 is open ports, by this valve gap 4 lid positions, take off valve gap 4 after, can take out or put into the spool 2 that describes in detail later from the open ports of valve body 1.The inside of valve body 1 is cavity, and this cavity is divided into epicoele 11 and lateral dimension less than the cavity of resorption 13 of epicoele 11, also has the valve port portion 12 between epicoele 11 and cavity of resorption 13 on the valve body 1, and spool 2 is positioned at the epicoele 11 of valve body 1, and the bottom is arranged in the valve port portion 12.Most important improvement of the present utility model is that spool 2 is planar shaped with the surface that valve port 12 contacts, prior art is owing to can occur after the spool injection moulding shrinking, the curved working face of arc spool may not keep theoretical size, thereby it is not tight with valve port 12 closures, thereby cause gas leakage, the spool 2 of relief valve of the present utility model is structures of planar shaped with the contact surface of valve port 12, makes spool 2 tight with cooperating of valve port 12 like this, and air-tightness is better.
Above-mentioned cavity constitutes gas passage 6, on the sidewall of valve body 1 bottom (being the close diapire of valve body 1), offer a plurality of air inlets 8 at this, on valve gap 4, offer a plurality of gas outlets 9, and the two ends of gas passage 6 communicate with air inlet 8 and gas outlet 9 respectively, thereby constitute whole gas turnover path.
In conjunction with referring to Fig. 2 and Fig. 3, the position and the number of gas outlet 9 and air inlet 8 are not limited, all can be provided with according to practical situation, for example, gas outlet 9 also can be arranged on the sidewall of close valve gap 4 of valve body 1, as long as make air inlet 8 and gas outlet 9 lay respectively at the both sides up and down of spool 2, to utilize spool 2 conductings or to disconnect gas passage 6.
Optimal way is that the open ports on valve gap 4 and valve body 1 top promptly connects by closely cooperating by the mode of interlocking.
Further the manner of execution to spool 2 is described in detail.Be provided with Magnet (second magnet) 3 in spool 2 inside, the bottom of valve body 1 is provided with lower magnet (first magnet) 7, air inlet 8 is (being on the sidewall of cavity of resorption 13 of valve body 1) between last Magnet 3 and the lower magnet 7, epicoele 11 bottoms (the valve port portion 12 between epicoele 11 and the cavity of resorption 13) that can utilize captivation between Magnet 3 and the lower magnet 7 that spool 2 is moved downward to be resisted against valve body 1, thereby confining gas passage 6, and open and during conducting gas passage 6, then air inlet 8 communicates with gas passage 6 when spool 2.
As shown in Figure 1, a circle groove 10 is arranged on the periphery of this utility model valve gap 4, the interior Zhou Youyi circle convex tendon 19 on valve body 2 tops, valve body 2 embeds corresponding groove 10 with valve gap 4 tops with convex tendon 19, thus the fixed easily assembling of realization is closed.
Preferably, can make spool 2 and last Magnet 3 one-body molded, for example, make in the Magnet 3 Unitarily molded spools 2.
The protruding ringwise lip shape of valve port portion 12.Like this, when gas pressure hour, spool 2 can be tighter the sealing valve port, air-tightness is preferable, and in the time of in big flow gas flows into gas circuit, the interior gas pressure of gas circuit surpasses spool 2 opening pressures of setting, and spool 2 is opened, gas 9 discharges from the gas outlet by gas passage 6 more promptly.
As preferred implementation of the present utility model, as shown in Figure 1, lower magnet 7 is adhesively fixed with the bottom of valve body 1.Connection is tightr like this, and lower magnet 7 also can be fixed on the bottom of valve body 1 by alternate manners such as the clampings that is spirally connected certainly.
Before using relief valve of the present utility model, to adjust the opening pressure value that distance between Magnet 3 and the lower magnet 7 is set spool 2 earlier.After the distance between last Magnet 3 and the lower magnet 7 was determined, reuse glue was bonded in lower magnet 7 bottom of valve body 1.
In the time of in small-flow gas flows into gas circuit, because gas pressure is lower than spool 2 opening pressures of setting, so spool 2 is failure to actuate.
When the gas flow in the gas circuit is very big, gas pressure in the gas circuit just can surpass spool 2 opening pressures of setting, spool 2 left valve port and moved up this moment, gas is just through the air inlet 8 of valve body 1 bottom, gas passage 6 by valve body 1 middle part flows out from the gas outlet 9 on the valve gap 4, thereby the gas pressure in the gas circuit is reduced.
This utility model also provides a kind of respirator and anesthetic machine, adopts above-mentioned relief valve.
This utility model adopts the magnetic force of going up between Magnet 3 and the lower magnet 7 to control the unlatching of spool 2.Because the distance between magnetic force and two Magnet is inversely proportional to, so the distance between two Magnet is big more, magnetic force is more little.When big flow gas flows into gas circuit, the distance of moving on the spool 2 is big more, the distance that last Magnet 3 and lower magnet are 7 is also just big more, the magnetic force that two Magnet are produced is more little, so spool 2 is in moving process, can not produce excessive pressure effect, thereby guarantee the equilibrium of gas pressure in the gas circuit the gas in the gas circuit.When relief valve does not reach the opening pressure of setting, spool with closely cooperate with valve port portion, the air-tightness of relief valve is better, and when relief valve reaches the opening pressure of setting, spool and valve port part from, can guarantee that like this gas flow is more unobstructed, thereby avoid the generation of the situation of air pressure patient harm.
The above is a preferred embodiment of the present utility model only, is not limited to this utility model, and for a person skilled in the art, this utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (8)
1. relief valve comprises:
Valve body (1), inside are provided with gas passage (6), and
Spool (2) is located in the described gas passage (6) of described valve body (1), with the described gas passage of closure or openness (6),
It is characterized in that: also comprise:
First magnet (7) is arranged on the described valve body (1); And
Second magnet (3) is arranged on the described spool (2), and attracts described first Magnet (7) along the direction of closed described gas passage (6);
The gas passage (6) of described valve body (1) comprises epicoele (11), cavity of resorption (13), has the valve port portion (12) that is positioned between described epicoele (11) and the cavity of resorption (13) on the described valve body (1), and described spool (2) is arranged in the described valve port portion (12); And described spool (2) is plane with the contact surface of described valve port (13).
2. relief valve according to claim 1 is characterized in that,
Also comprise valve gap (4), be arranged on the described valve body (1), and the described epicoele of capping (11).
3. relief valve according to claim 2 is characterized in that:
Described valve gap (4) is provided with the gas outlet (9) of described gas passage (6);
The air inlet (8) of described gas passage (6) is arranged on the described valve body (1), is connected with described cavity of resorption (13).
4. relief valve according to claim 1 is characterized in that,
The protruding ringwise lip shape of described valve port (13).
5. relief valve according to claim 2 is characterized in that,
Described valve gap (4) and the interlocking of described valve body (1) top;
Have groove (10) on the periphery of described valve gap (4), described valve body (1) top have convex tendon (19) an interior week, the convex tendon (19) of described valve body (1) embeds in the groove (10) of described valve gap (4).
6. relief valve according to claim 1 is characterized in that,
Described first magnet (7) is bonded and fixed at the bottom of described valve body (1).
7. a respirator is characterized in that, adopts the described relief valve of claim 1-6.
8. an anesthetic machine is characterized in that, adopts the described relief valve of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201730896U CN201469859U (en) | 2009-09-08 | 2009-09-08 | Safety valve, respirator and anesthetic machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201730896U CN201469859U (en) | 2009-09-08 | 2009-09-08 | Safety valve, respirator and anesthetic machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201469859U true CN201469859U (en) | 2010-05-19 |
Family
ID=42406097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201730896U Expired - Lifetime CN201469859U (en) | 2009-09-08 | 2009-09-08 | Safety valve, respirator and anesthetic machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201469859U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012045264A1 (en) * | 2010-10-09 | 2012-04-12 | 深圳迈瑞生物医疗电子股份有限公司 | Oxygen battery base assembly, oxygen battery assembly and anesthesia machine |
-
2009
- 2009-09-08 CN CN2009201730896U patent/CN201469859U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012045264A1 (en) * | 2010-10-09 | 2012-04-12 | 深圳迈瑞生物医疗电子股份有限公司 | Oxygen battery base assembly, oxygen battery assembly and anesthesia machine |
| CN102441213A (en) * | 2010-10-09 | 2012-05-09 | 深圳迈瑞生物医疗电子股份有限公司 | Oxygen cell holder component, oxygen cell component and anesthesia machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100519 |
|
| CX01 | Expiry of patent term |