CN219517477U

CN219517477U - Stop valve and breathing machine

Info

Publication number: CN219517477U
Application number: CN202320170274.XU
Authority: CN
Inventors: 庞剑锋; 唐克锋; 唐彬桢
Original assignee: Ambulanc Shenzhen Tech Co Ltd
Current assignee: Ambulanc Shenzhen Tech Co Ltd
Priority date: 2023-01-31
Filing date: 2023-01-31
Publication date: 2023-08-15
Anticipated expiration: 2033-01-31

Abstract

The utility model belongs to the technical field of stop valves, and particularly relates to a stop valve and a breathing machine, wherein the stop valve comprises a shell, a valve cover and a one-way valve component; the valve cover is arranged on the shell, a first valve cavity for medium inflow and a second valve cavity for medium outflow are arranged in the shell, the check valve assembly comprises a check valve diaphragm, a check valve bracket and a pushing piece, the first valve cavity is provided with a valve port, the check valve bracket is arranged in the valve port, and a channel is arranged on the check valve bracket; the one-way valve diaphragm is connected to the one-way valve bracket and can seal the channel to separate the first valve cavity from the second valve cavity; the pushing piece is inserted into the channel, and the one-way valve membrane can open the channel when being pushed by the pushing piece, so that the first valve cavity is communicated to the second valve cavity through the channel. According to the utility model, when the breathing machine works normally, the one-way valve diaphragm seals the channel, the first valve cavity is not communicated with the second valve cavity, and the stop valve is in a normally closed state, so that the power consumption of the breathing machine can be reduced, and the endurance time of the breathing machine can be prolonged.

Description

Stop valve and breathing machine

Technical Field

The utility model belongs to the technical field of stop valves, and particularly relates to a stop valve and a breathing machine.

Background

The breathing machine is generally provided with a stop valve, and the main function of the breathing machine is that the breathing machine can be opened to release air when the air pressure of the air suction end is too high so as to protect a patient.

Most of the existing stop valves are normally open, namely, when the breathing machine works normally to treat patients, the stop valve needs to be electrified or inflated to enable the stop valve to be in a closed state, so that the power consumption of the breathing machine can be greatly increased. Particularly when transporting the patient, the breathing machine relies on the battery to work, and battery electric quantity is limited, and the stop valve consumption is big, can reduce the duration of use time of battery, brings great risk for the patient.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: aiming at the problems that in the prior art, the stop valve is in a closed state due to the need of electrifying or inflating, and the power consumption of the breathing machine is increased, the stop valve and the breathing machine are provided.

In order to solve the technical problems, in one aspect, an embodiment of the present utility model provides a stop valve, including a housing, a valve cover, and a check valve assembly;

the valve cover is arranged on the shell, a first valve cavity for medium inflow and a second valve cavity for medium outflow are arranged in the shell, the one-way valve assembly comprises a one-way valve membrane, a one-way valve bracket and a pushing piece, the first valve cavity is provided with a valve port, the one-way valve bracket is arranged in the valve port, and a channel is arranged on the one-way valve bracket in a penetrating way;

the one-way valve diaphragm is connected to the one-way valve bracket, and can seal the channel to block the first valve cavity and the second valve cavity;

the pushing piece is inserted into the channel, and the one-way valve membrane can open the channel when being pushed by the pushing piece, so that the first valve cavity is communicated with the second valve cavity through the channel.

Optionally, the housing includes a first casing and a second casing, the second casing is disposed around the first casing, the first valve cavity is disposed inside the first casing, the second valve cavity is formed between an outer circumferential surface of the first casing and an inner circumferential surface of the second casing, the check valve bracket is connected to the first casing, and the valve cover is mounted to the second casing.

Optionally, the one-way valve membrane comprises an annular connecting part and a membrane connected to the annular connecting part, the one-way valve bracket comprises a bracket main body and a flange arranged around the first end of the bracket main body, and the channel is arranged in the bracket main body;

the flange is connected to the first shell, the annular connecting portion is sleeved on the outer side of the support body, the outer peripheral surface of the annular connecting portion abuts against the inner peripheral surface of the first shell, and the diaphragm is attached to the second end of the support body.

Optionally, the membrane includes first membrane and the second membrane of relative setting, first end of first membrane with the first end of second membrane is connected on the cyclic annular connecting portion, the second end of first membrane with the second end of second membrane is close to each other and forms V-arrangement structure, the second end of support main part fits in the V-arrangement structure.

Optionally, an annular groove is formed in the bracket main body, and the annular connecting part is embedded in the annular groove;

a plurality of vertical ribs are arranged in the annular groove, a plurality of limiting grooves are formed in the annular connecting portion, and each vertical rib is arranged in the corresponding limiting groove.

Optionally, the pushing member includes a docking portion and a plurality of pressing pieces connected to the docking portion, the channels are provided in plurality, and each pressing piece is provided in a corresponding channel.

Optionally, the stop valve further comprises a driving assembly for driving the pushing member to move;

the driving assembly comprises an electromagnet module, a push rod and a sealing piece, wherein the electromagnet module is arranged on the valve cover, and the push rod penetrates through the valve cover and is connected with the electromagnet module and the butt joint part;

the sealing piece is sleeved outside the ejector rod and used for sealing between the ejector rod and the valve cover.

Optionally, the stop valve further includes an inner gasket, the second housing includes a first portion and a second portion, the first portion protrudes from the second portion in the outer circumferential direction, a junction of the first portion and the second portion has a step, the inner gasket is disposed on the step, and the valve cover is disposed in the first portion and abuts against the inner gasket.

Optionally, the shell further comprises an air inlet pipeline and an air outlet pipeline, the air inlet pipeline is connected to the first shell, the air outlet pipeline is connected to the second shell, and when the first valve cavity and the second valve cavity are conducted, the air inlet pipeline is communicated with the air outlet pipeline.

On the other hand, the embodiment of the utility model provides a breathing machine, which comprises the stop valve.

According to the stop valve provided by the embodiment of the utility model, the one-way communication from the first valve cavity to the second valve cavity is realized through the channel of the one-way valve support, no air leakage is needed when the breathing machine works normally, the one-way valve diaphragm seals the channel, the first valve cavity cannot be communicated with the second valve cavity, air entering the first valve cavity cannot flow out through the second valve cavity, the stop valve is in a normally closed state, and the stop valve is kept in a closed state when the breathing machine is not electrified or inflated, so that the normal operation of the breathing machine is ensured, the problem that the power consumption of the breathing machine is greatly increased due to the fact that the conventional stop valve is closed through electrifying or inflating is avoided, the effect of reducing the power consumption of the breathing machine is realized, and the duration of the breathing machine is prolonged.

When the air pressure of the breathing machine is too high and air needs to be discharged, the pushing piece pushes the one-way valve membrane to not close the channel any more, the stop valve can be opened, and the air in the first valve cavity is discharged from the stop valve after passing through the channel, so that air discharge is realized, and the air pressure is reduced.

Drawings

FIG. 1 is a schematic illustration of a shut-off valve according to an embodiment of the present utility model;

FIG. 2 is an enlarged schematic view at A in FIG. 1;

FIG. 3 is an exploded view of a shut-off valve provided in an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view of a shut-off valve according to an embodiment of the present utility model;

fig. 5 is a schematic view of a check valve membrane and a check valve holder according to an embodiment of the present utility model.

Reference numerals in the specification are as follows:

1. a housing; 11. a first housing; 111. a first valve chamber; 12. a second housing; 121. a first portion; 122. a second portion; 123. a second valve chamber; 124. a chute; 125. a clamping groove; 13. an air intake duct; 14. an air outlet pipe;

2. a valve cover; 21. a limiting piece; 22. a protrusion;

3. a one-way valve assembly; 31. a one-way valve diaphragm; 311. an annular connecting part; 3111. a limit groove; 312. a membrane; 3121. a first membrane; 3122. a second membrane; 32. a check valve bracket; 321. a holder main body; 3211. a channel; 3212. an annular groove; 3213. vertical ribs; 322. a flange; 33. a pushing member; 331. a butt joint part; 332. tabletting;

4. a drive assembly; 41. an electromagnet module; 42. a push rod; 43. a seal;

5. an inner gasket.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

As shown in fig. 1 to 5, the stop valve provided by an embodiment of the present utility model includes a housing 1, a valve cover 2, and a check valve assembly 3, where the valve cover 2 is mounted on the housing 1, a first valve cavity 111 for medium inflow and a second valve cavity 123 for medium outflow are disposed in the housing 1, the first valve cavity 111 can be unidirectionally communicated with the second valve cavity 123 through the check valve assembly 3, the first valve cavity 111 is connected with an air inlet end, the second valve cavity 123 is connected with an air outlet end, and the first valve cavity 111 and the second valve cavity 123 can be controlled to be in a blocking or conducting state through the check valve assembly 3, so as to realize blocking or circulation of the medium.

The check valve assembly 3 comprises a check valve membrane 31, a check valve support 32 and a pushing piece 33, the first valve cavity 111 is provided with a valve port, the check valve support 32 is arranged in the valve port, a channel 3211 is arranged on the check valve support 32 in a penetrating way, the check valve support 32 blocks the valve port, and the first valve cavity 111 and the second valve cavity 123 can be communicated through the channel 3211.

The check valve membrane 31 is connected to the check valve bracket 32, the check valve membrane 31 can close the channel 3211 to block the first valve cavity 111 and the second valve cavity 123, the pushing member 33 is inserted into the channel 3211, and the check valve membrane 31 can open the channel 3211 when pushed by the pushing member 33, so that the first valve cavity 111 is communicated with the second valve cavity 123 through the channel 3211. Specifically, the first end of the channel 3211 is located in the first valve cavity 111, the second end of the channel 3211 communicates with the second valve cavity 123, the check valve membrane 31 can close the first end of the channel 3211, and at this time, the first valve cavity 111 and the second valve cavity 123 cannot communicate through the channel 3211 and are blocked by the check valve membrane 31. The pusher 33 is inserted from the second end of the channel 3211, and the pusher 33 is able to move along the channel 3211 and push the one-way valve membrane 31 out of closing the channel 3211, so that the first valve chamber 111 and the second valve chamber 123 communicate through the channel 3211.

According to the stop valve provided by the embodiment of the utility model, the one-way valve bracket 32 is arranged at the valve port, the one-way communication from the first valve cavity 111 to the second valve cavity 123 is realized through the channel 3211 of the one-way valve bracket 32, no air leakage is needed when the breathing machine works normally, the one-way valve diaphragm 31 seals the channel 3211, the first valve cavity 111 cannot be communicated with the second valve cavity 123, air entering the first valve cavity 111 cannot flow out through the second valve cavity 123, the stop valve is kept in a normally closed state, the stop valve is not needed to be electrified or inflated, the normal operation of the breathing machine can be ensured, the problem that the power consumption of the breathing machine is greatly increased due to the fact that the conventional stop valve is closed through electrification or inflation is avoided, the effect of reducing the power consumption of the breathing machine is realized, and the duration of the breathing machine is prolonged.

When the air pressure of the respirator is too high and needs to be leaked, the pushing member 33 pushes the one-way valve membrane 31 to not close the channel 3211, the stop valve is in an open state, and the air entering the first valve cavity 111 enters the second valve cavity 123 after passing through the channel 3211, and is further discharged from the stop valve to be leaked, so that the air pressure is reduced.

In an embodiment, as shown in fig. 3 and 4, the housing 1 includes a first casing 11 and a second casing 12, the second casing 12 is disposed around the first casing 11, a first end of the first casing 11 is disposed in the second casing 12 in an axial direction of the first casing 11, a second end of the first casing 11 is exposed and protrudes from the second casing 12, the first valve chamber 111 is disposed inside the first casing 11, the second valve chamber 123 is formed between an outer circumferential surface of the first casing 11 and an inner circumferential surface of the second casing 12, the check valve bracket 32 is connected to the first casing 11, and the valve cover 2 is mounted on the second casing 12.

In an embodiment, as shown in fig. 4, the first housing 11 and the second housing 12 are both in a cylindrical structure with an opening at one end, the first valve cavity 111 is a cylindrical cavity, the second valve cavity 123 is an annular cavity surrounding the first housing 11, the valve port is an opening of the first housing 11, the check valve bracket 32 is disposed at the valve port of the first housing 11, the valve cover 2 is connected at the opening of the second housing 12, and the valve cover 2 can close the opening of the second housing 12.

In an embodiment, as shown in fig. 2 and 3, a limiting member 21 is disposed on an outer circumferential surface of the valve cover 2, a protrusion 22 is disposed on the limiting member 21, the protrusion 22 protrudes from the limiting member 21 in an axial direction of the valve cover 2, the protrusion 22 and the limiting member 21 are in an integrally formed structure, a sliding groove 124 and a clamping groove 125 communicated with the sliding groove 124 are disposed on an inner wall of the second housing 12, the limiting member 21 is disposed in the sliding groove 124, and the protrusion 22 is disposed in the clamping groove 125. When the valve cover 2 is mounted on the second housing 12, the limiting member 21 needs to be aligned with the sliding groove 124, the valve cover 2 is rotated, the limiting member 21 enters into the sliding groove 124 and moves along the sliding groove 124 until the protrusion 22 is blocked in the blocking groove 125, at this time, the valve cover 2 is rotated in place and connected to the second housing 12.

Preferably, the protrusion 22 is disposed at a middle portion of the stopper 21, and a portion of the stopper 21 located at a front end of the protrusion 22 has a guiding function along a rotation direction, so that the stopper 21 is conveniently inserted into the sliding groove 124, and a height of the portion of the stopper 21 in an axial direction of the valve cover 2 is gradually increased toward the protrusion 22.

In an embodiment, as shown in fig. 3 and 5, the check valve diaphragm 31 includes an annular connecting portion 311 and a diaphragm 312 connected to the annular connecting portion 311, the check valve bracket 32 includes a bracket body 321 and a flange 322 disposed around a first end of the bracket body 321, the channel 3211 is disposed through the bracket body 321, the flange 322 is connected to the first housing 11, preferably, an outer edge of the flange 322 is aligned with an outer circumference of the first housing 11, and the flange 322 is fixedly connected to the first housing 11 by a screw.

As shown in fig. 4, the annular connecting portion 311 is sleeved on the outer side of the bracket body 321, the outer peripheral surface of the annular connecting portion 311 abuts against the inner peripheral surface of the first housing 11, the annular connecting portion 311 is connected between the bracket body 321 and the inner peripheral surface of the first housing 11 in an interference manner, and has a sealing function to prevent the gas in the first valve cavity 111 from overflowing, and the diaphragm 312 is attached to the second end of the bracket body 321 to close the channel 3211.

In an embodiment, the check valve membrane 31 is made of a silica gel material, the annular connecting portion 311 is sleeved on the bracket main body 321, and then the check valve bracket 32 is inserted into the first housing 11, so as to realize interference connection of the annular connecting portion 311.

In an embodiment, as shown in fig. 5, the membrane 312 includes a first membrane 3121 and a second membrane 3122 disposed opposite to each other, the first end of the first membrane 3121 and the first end of the second membrane 3122 are symmetrically connected to the annular connection portion 311, the second end of the first membrane 3121 and the second end of the second membrane 3122 are close to each other to form a V-shaped structure, the second end of the support body 321 is adapted to the V-shaped structure, and the second end of the support body 321 is also V-shaped.

In one embodiment, the first membrane 3121 and the second membrane 3122 are semi-circular.

In an embodiment, as shown in fig. 5, the bracket body 321 is provided with an annular groove 3212, the annular connecting portion 311 is embedded in the annular groove 3212, a plurality of vertical ribs 3213 are disposed in the annular groove 3212, the annular connecting portion 311 is provided with a plurality of limiting grooves 3111, each vertical rib 3213 is disposed in a corresponding limiting groove 3111, and relative rotation between the annular connecting portion 311 and the bracket body 321 can be avoided through the limiting grooves 3111 and the vertical ribs 3213.

In an embodiment, as shown in fig. 3 and 4, the pushing member 33 includes a butt joint portion 331 and a plurality of pressing pieces 332 connected to the butt joint portion 331, the channel 3211 is provided with a plurality of pressing pieces 332, each pressing piece 332 is disposed in a corresponding channel 3211, when the pushing member 33 pushes, the pressing pieces 332 follow movement, and since the first membrane 3121 and the second membrane 3122 are made of silicone, the pressing pieces 332 can push the first membrane 3121 and the second membrane 3122 to bend, so that the channel 3211 is no longer blocked. After the pressing piece 332 returns, the first membrane 3121 and the second membrane 3122 reseal the channel 3211, and the first membrane 3121 and the second membrane 3122 can be tightly pressed against the support body 321 under the action of the gas in the first valve cavity 111, so as to prevent air leakage.

In one embodiment, the bracket body 321 has a cavity therein, at least one partition is disposed in the cavity, the channel 3211 is formed by separating the cavities by the partition, and at least two channels 3211 are disposed.

In an embodiment, as shown in fig. 3 and 4, the stop valve further includes a driving component 4 for driving the pushing member 33 to move, the abutting portion 331 is connected to the driving component 4, and the pushing member 33 is connected to the driving component 4 through the abutting portion 331.

The driving assembly 4 comprises an electromagnet module 41, a push rod 42 and a sealing piece 43, the electromagnet module 41 is installed on the valve cover 2, the butt joint part 331 is arranged in the second valve cavity 123 and located inside the valve cover 2, the push rod 42 penetrates through the valve cover 2 and is connected with the electromagnet module 41 and the butt joint part 331, after the electromagnet module 41 is electrified, the push rod 42 can be driven to move, the push rod 42 pushes the pushing piece 33 to move towards the one-way valve membrane 31, the pressing piece 332 pushes the first membrane 3121 and the second membrane 3122 to deform and bend, and a channel 3211 is opened.

As shown in fig. 4, the sealing member 43 is sleeved on the outside of the stem 42 for sealing between the stem 42 and the valve cover 2. The sealing element 43 is made of a silica gel material and can be stretched and contracted, and when the ejector rod 42 moves, the sealing element 43 is stretched along with the movement of the ejector rod 42, and meanwhile, the sealing performance is not affected.

In an embodiment, the electromagnet module 41 has a conventional structure, and specifically includes a moving magnet, a static magnet and a spring, where after the electromagnet module 41 is energized, the moving magnet can drive the ejector rod 42 to move, and after the electromagnet module is de-energized, the spring is helpful for returning the moving magnet and the ejector rod 42.

In an embodiment, as shown in fig. 3 and 4, the stop valve further includes an inner gasket 5, the second housing 12 includes a first portion 121 and a second portion 122, the inner diameter of the first portion 121 is larger than the inner diameter of the second portion 122, the first portion 121 protrudes from the second portion 122 in the outer circumferential direction, a step is formed at the junction of the first portion 121 and the second portion 122, the inner gasket 5 is disposed on the step, and the valve cover 2 is connected in the first portion 121 and abuts against the inner gasket 5.

In an embodiment, as shown in fig. 1 and fig. 4, the housing 1 further includes an air inlet pipe 13 and an air outlet pipe 14, the air inlet pipe 13 is connected to the first housing 11, the air outlet pipe 14 is connected to the second housing 12, gas enters the first valve cavity 111 through the air inlet pipe 13, gas in the second valve cavity 123 flows out through the air outlet pipe 14, and when the first valve cavity 111 and the second valve cavity 123 are conducted, the air inlet pipe 13 is sequentially connected to the air outlet pipe 14 through the first valve cavity 111 and the second valve cavity 123.

In another aspect, an embodiment of the present utility model provides a breathing machine, including the stop valve of the above embodiment.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. A stop valve is characterized by comprising a shell, a valve cover and a one-way valve assembly;

the valve cover is arranged on the shell, a first valve cavity for medium inflow and a second valve cavity for medium outflow are arranged in the shell, the one-way valve assembly comprises a one-way valve membrane, a one-way valve bracket and a pushing piece, the first valve cavity is provided with a valve port, the one-way valve bracket is arranged in the valve port, and a channel is arranged on the one-way valve bracket;

2. The shut-off valve of claim 1, wherein the housing comprises a first housing and a second housing, the second housing being disposed around the first housing, the first valve chamber being disposed inside the first housing, the second valve chamber being formed between an outer peripheral surface of the first housing and an inner peripheral surface of the second housing, the check valve bracket being attached to the first housing, the valve cover being mounted to the second housing.

3. The shut-off valve of claim 2 wherein said check valve diaphragm includes an annular connection and a diaphragm attached to said annular connection, said check valve carrier including a carrier body and a flange disposed about a first end of said carrier body, said passageway being disposed within said carrier body;

4. A shut-off valve according to claim 3 wherein said diaphragm comprises oppositely disposed first and second diaphragms, said first and second diaphragm first ends being connected to said annular connection, said first and second diaphragm second ends being adjacent one another to form a V-shaped configuration, said bracket body second end fitting within said V-shaped configuration.

5. The shutoff valve of claim 3 wherein the bracket body is provided with an annular groove, the annular connection being embedded in the annular groove;

6. The shut-off valve of claim 1 wherein said pusher member includes a docking portion and a plurality of tabs coupled to said docking portion, said channel being provided in plurality, each of said tabs being disposed in a corresponding one of said channels.

7. The shut-off valve of claim 6, further comprising a drive assembly for driving movement of the pusher;

8. The shut-off valve of claim 2 further comprising an inner gasket, wherein the second housing comprises a first portion and a second portion, the first portion protruding circumferentially beyond the second portion, the junction of the first portion and the second portion having a step, the inner gasket being disposed on the step, the valve cover being disposed within the first portion and abutting the inner gasket.

9. The shut-off valve of claim 2 wherein said housing further comprises an inlet conduit connected to said first housing and an outlet conduit connected to said second housing, said inlet conduit communicating with said outlet conduit when said first and second valve chambers are in communication.

10. A ventilator comprising a shut-off valve according to any one of claims 1-9.