CN107789716B

CN107789716B - Pressure switch valve for breathing device

Info

Publication number: CN107789716B
Application number: CN201610784752.0A
Authority: CN
Inventors: 王志军
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-08-30
Filing date: 2016-08-30
Publication date: 2021-01-22
Anticipated expiration: 2036-08-30
Also published as: CN107789716A

Abstract

The invention discloses a pressure switch valve, which comprises a valve body, wherein the valve body comprises an input cavity provided with an input port and an adjusting cavity provided with an output port, the input cavity and the adjusting cavity are separated by a baffle, an opening is formed in the baffle, a first plug body corresponding to the opening is arranged on the opening, an elastic side wall is arranged on the side wall of the adjusting cavity, the elastic side wall is connected with the first plug body through a pull rod, the elastic side wall drives the first plug body to open and close the pair of openings under the action of pressure, in addition, a second plug body corresponding to the output port is arranged on the output port, the second plug body is connected with an external control mechanism, and the second plug body performs opening and closing movement on the output port under the action of the external control mechanism, so that a gas-liquid shunt balance. Has the advantages that: the invention can provide oxygen ventilation quantity in equal proportion to air suction, realizes automatic variable control of oxygen suction, avoids the phenomena of low flow and high flow when oxygen is sucked, effectively ensures the oxygen supply requirement of a user, improves the applicability of the device, and is beneficial to popularization and application in the market.

Description

Pressure switch valve for breathing device

Technical Field

The invention relates to the technical field of medical equipment, in particular to a pressure switch valve for a breathing device.

Background

With the progress of scientific technology and the rapid development of economy, the application of the oxygen generator is more and more extensive, especially in Europe and America, a small household oxygen generator has become a very popular health care product for many years, and a good oxygen generator is selected to help people scientifically develop oxygen health care; so as to achieve the purposes of treating diseases, relieving symptoms, promoting recovery, preventing pathological changes and promoting health.

In addition, clinical practice proves that the oxygen therapy can play an effective treatment role on acute and chronic ischemic-hypoxic diseases of various clinical families and secondary diseases caused by hypoxia by using the unique treatment mechanism of the oxygen therapy; proper oxygen inhalation, improving microcirculation, reducing respiratory system load required for maintaining a certain alveolar gas oxygen partial pressure, reducing myocardial load required for maintaining a certain arterial blood oxygen partial pressure, and the like; therefore, the oxygen therapy and the oxygen health care have irreplaceable important functions and wide development prospects in the aspects of clinical medicine, preventive medicine, emergency medicine, geriatric medicine, rehabilitation and health care medicine and the like.

The existing oxygen delivery switches of oxygen generators are provided with a plurality of gears, and are adjusted to the oxygen delivery gears equivalent to the required amount of a patient as much as possible according to the requirement of the patient, but the oxygen flow required by blood oxygen exchange cannot be effectively provided when the constant oxygen output with low flow is realized; when the oxygen is output at a constant high flow rate, the oxygen inhalator can be provided with great positive exhalation resistance due to the high flow rate.

Aiming at the relevant problems in the prior art, no effective solution is provided at present.

Disclosure of Invention

It is an object of the present invention to provide a pressure switching valve for a breathing apparatus that overcomes the above-mentioned deficiencies of the prior art.

The technical scheme of the invention is realized as follows:

the utility model provides a pressure switch valve for respiratory device, includes the valve body, the valve body is including the input chamber that is provided with the input port and the regulation chamber that is provided with the delivery outlet, the input chamber with be separated by through the baffle between the regulation chamber, and, be provided with the opening on the baffle, be provided with on the opening with the cock body that the opening corresponds is first, be provided with the elasticity lateral wall on the lateral wall in regulation chamber, the elasticity lateral wall pass through the pull rod with cock body one is connected, and, the elasticity lateral wall drives a pair of opening of cock body and is the switching motion under the effect of pressure, in addition, be provided with on the delivery outlet with the cock body two that the delivery outlet corresponds, cock body two is connected with external control mechanism, and under external control mechanism's the effect, is the switching motion to the delivery outlet.

Optionally, the elastic side wall is located on a side wall of the adjustment cavity that is in contact with the outside.

Optionally, the elastic side wall is on the baffle, and the elastic side wall and the opening are respectively located at two side ends of the baffle.

Optionally, the link comprises a lever.

Optionally, the lever is located within the adjustment cavity.

Optionally, the elastic sidewall includes: elastic film, elastic sheet or elastic plastic.

Optionally, the opening and the outlet are of a frustum or conical structure.

Optionally, the external control mechanism includes a negative pressure control valve, and a negative pressure sensing device is arranged on the negative pressure control valve.

Optionally, the negative pressure control valve includes: needle valve, rotary valve, half ball valve, slide valve, hydrodynamic balance valve, direct-acting solenoid valve, step-by-step direct-acting solenoid valve, or pilot operated solenoid valve.

Optionally, the negative pressure sensing device includes: piston, metal diaphragm chamber, tower membrane, magnetism even or pressure sensor.

The invention has the beneficial effects that: this system is connected through the pipeline and user's end of breathing in, through with the produced negative pressure instant trigger external control mechanism (negative pressure induction system and negative pressure control valve) of user end of breathing in, make external control mechanism control cock body two open the input port, change the pressure in adjusting the intracavity, and then trigger elastic side wall control cock body one and open the opening, make the fluid in the input chamber enter into in proper order and adjust the chamber and the end of breathing in, the oxygen ventilation volume with breathing in the equal proportion is provided, oxygen inspiratory automatic variable control has been realized, the phenomenon of low flow and high flow appears when having avoided inhaling oxygen takes place, user's oxygen supply requirement has effectively been guaranteed, furthermore, this system has also avoided directly using the too big problem of negative pressure control system's pressure at the end of breathing in, the suitability of device has been improved, be favorable to the popularization and the application in market.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a first schematic structural diagram of a pressure switching valve for a respiratory device according to an embodiment of the present invention;

fig. 2 is a second schematic structural diagram of a pressure switching valve for a breathing apparatus according to an embodiment of the present invention.

In the figure:

1. a valve body; 2. an input port; 3. an input chamber; 4. an output port; 5. an adjustment chamber; 6. a baffle plate; 7. an opening; 8. a first plug body; 9. a resilient side wall; 10. a pull rod; 11. a plug body II; 12. an external control mechanism.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.

According to an embodiment of the present invention, a pressure switching valve for a breathing apparatus is provided.

As shown in fig. 1-2, a pressure switch valve for a breathing apparatus according to an embodiment of the present invention includes a valve body 1, the valve body 1 includes an input chamber 3 having an input port 2 and an adjustment chamber 5 having an output port 4, the input chamber 3 and the adjustment chamber 5 are separated by a baffle 6, the baffle 6 is provided with an opening 7, the opening 7 is provided with a plug 8 corresponding to the opening 7, a side wall of the adjustment chamber 5 is provided with an elastic side wall 9, the elastic side wall 9 is connected to the plug 8 through a pull rod 10, the elastic side wall 9 drives the plug 8 to open and close the opening 7 under pressure, the output port 4 is provided with a plug 11 corresponding to the output port 4, the plug 11 is connected to an external control mechanism 12, and under the action of the external control mechanism 12, the output port 4 is opened and closed, and a gas-liquid shunt balance control switch can be realized.

During specific use, be connected to the user end of breathing in through the pipeline with external control mechanism 12, external control mechanism 12 controls cock body two 11 and opens delivery outlet 4 simultaneously, and delivery outlet 4 opens the back, the pressure in adjusting chamber 5 then can reduce, at this moment, elasticity lateral wall 9 outside face pressure will be greater than the pressure of medial surface, elasticity lateral wall 9 is then under the effect of pressure, compress, promote pull rod 10, make and break away from between cock body 8 and the opening 7, gap or breach appear, thereby make the oxygen in the input chamber 3 enter into adjusting chamber 5, flow out in the delivery outlet 4, and then the inspiratory automatic variable control of oxygen has been realized.

In one embodiment, the pressure switch valve for the breathing apparatus can take different configurations, for example, as shown in fig. 1-2, the elastic side wall 9 is a side wall of the regulating chamber 5 that is in contact with the outside, in which case the pressure of the elastic side wall 9 is derived from the external atmospheric pressure, of course, the elastic side wall 9 is the baffle plate 6, in which case the pressure of the elastic side wall 9 is derived from the atmospheric pressure in the input chamber 3, and for good opening and closing of the opening 7, the elastic side wall 9 and the opening 7 can be arranged opposite to each other, in particular, at both side ends of the baffle plate 6.

In one embodiment, to facilitate the pushing and pulling of the plug body 8, the connecting rod 10 can be a lever, and the opening and closing movement of the plug body 8 and the opening 7 can be realized through the lever principle. While the lever may be positioned within the adjustment chamber 5 or within the input chamber 3, in this particular example, it is preferably positioned within the adjustment chamber 3.

In one embodiment, the elastic sidewall 9 can be a pressure elastic condition, and in a specific application, it can be an elastic film, an elastic sheet, or an elastic plastic.

Claims

1. A pressure switch valve for a breathing device is characterized by comprising a valve body, wherein the valve body comprises an input cavity and an adjusting cavity, the input cavity is provided with an input port, the adjusting cavity is provided with an output port, the input cavity and the adjusting cavity are separated by a baffle, the baffle is provided with an opening, a first plug body corresponding to the opening is arranged on the opening, an elastic side wall is arranged on the side wall of the adjusting cavity, the elastic side wall is connected with the first plug body through a pull rod, the elastic side wall drives the first plug body to open and close the opening under the action of pressure, in addition, a second plug body corresponding to the output port is arranged on the output port, and the second plug body is connected with an external control mechanism and performs opening and closing movement on the output port under the action of the external control mechanism; the elastic side wall is positioned on one side wall of the adjusting cavity, which is in contact with the outside.

2. The pressure switch valve for a respiratory device of claim 1, wherein the elastic sidewall is on the baffle, and the elastic sidewall and the opening are located at both side ends of the baffle, respectively.

3. The pressure switch valve for a respiratory device of claim 2, wherein the pull rod comprises a lever.

4. The pressure switch valve for a respiratory device of claim 3, wherein the lever is located within the regulation cavity.

5. The pressure switch valve for a respiratory device of claim 1, wherein the resilient sidewall comprises:

elastic film, elastic sheet or elastic plastic.

6. The pressure switch valve for a respiratory device of claim 1, wherein the opening and the output port are of a frustoconical or conical configuration.

7. A pressure switch valve for a respiratory apparatus according to any one of claims 1 to 6, wherein the external control mechanism comprises a negative pressure control valve having a negative pressure sensing means provided thereon.

8. The pressure switching valve for a respiratory apparatus according to claim 7, wherein the negative pressure control valve comprises: needle valve, rotary valve, half ball valve, slide valve, hydrodynamic balance valve, direct-acting solenoid valve, step-by-step direct-acting solenoid valve, or pilot operated solenoid valve.

9. The pressure switching valve for a respiratory device of claim 7, wherein the negative pressure sensing device comprises: piston, metal diaphragm chamber, tower membrane, magnetism even or pressure sensor.