CN111569222B

CN111569222B - Breather valve assembly structure for breathing machine

Info

Publication number: CN111569222B
Application number: CN202010407816.1A
Authority: CN
Inventors: 姚威; 储昭卫; 吴彩霞; 韩旭; 张毕风; 胡顺顺
Original assignee: Zhejiang Science And Technology Publicity And Education Center
Current assignee: Zhejiang Science And Technology Publicity And Education Center
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2022-12-23
Anticipated expiration: 2040-05-14
Also published as: CN111569222A

Abstract

The invention relates to the technical field of breathing machine accessories, and discloses a breathing valve component structure for a breathing machine, which comprises a breathing valve body, wherein a front filter cavity A and a rear filter cavity A are arranged inside the upper end of the breathing valve body, a front filter cavity B and a rear filter cavity B are arranged inside the lower end of the breathing valve body, a flow guide channel is arranged in the breathing valve body, air inlet holes are respectively arranged on the side surfaces of the outer ends of the front filter cavity A and the front filter cavity B, exhaust joints are respectively arranged on the side surfaces of the outer ends of the rear filter cavity A and the rear filter cavity B, a diaphragm type one-way valve is arranged in the flow guide channel, and filter elements are respectively arranged in the front filter cavity A, the rear filter cavity A, the front filter cavity B and the rear filter cavity B; the intersection of the first passage and the air inlet passage is provided with a first reversing switch, and the intersection of the second passage and the air suction passage is provided with a second reversing switch. The invention does not need to arrange a filter outside, the respirator does not need to be stopped when the filter element is replaced, and the filter element is more convenient to replace.

Description

Breather valve assembly structure for respirator

Technical Field

The invention relates to the technical field of breathing machine accessories, in particular to a breathing valve assembly structure for a breathing machine.

Background

The breather valve is an important component for interconnecting an oxygen end and a patient end in the breathing machine, and is mainly used for connecting the breathing machine and a patient to realize the separation of exhaled air and inhaled air, thereby ensuring the smooth operation of breathing action. At present, the types of the breathing valves are very many, however, a filter is not arranged in a common breathing valve, the reason is that the oxygen output end of the breathing machine is provided with the filter, when a patient with some special illness uses the breathing machine, a lot of bacteria, viruses and the like are carried in the droplets of the gas exhaled by the patient, and the bacteria and the viruses escape into the environment along with the droplets in the gas exhaled by the patient, so that other people are easily infected. The disposable filters are directly connected in series at the tail parts of the air suction end pipeline and the air exhalation end pipeline, but the disposable filters need to be replaced at regular time, the breathing machine needs to be stopped when the filters are replaced, and because the breathing machine is very short and almost has no standby breathing machine, a patient cannot breathe through the breathing machine when the breathing machine stops and filter elements are replaced, and only natural breathing can be carried out to wait for replacing the filters, so that the lung of the patient is easily damaged; and the filter needs to be connected in series to the pipeline, the filter must have complete shell, filter core, and shell, filter core all are whole when changing, and this brings very big pressure to the production of filter, and the cost is higher moreover.

Disclosure of Invention

The invention aims to solve the problems of the breather valve in the prior art and provides a breather valve component structure for a respirator.

In order to achieve the purpose, the invention adopts the following technical scheme:

a breather valve component structure for a respirator comprises a breather valve body, wherein an air inlet joint is arranged at the left end of the breather valve body, an air suction joint is arranged at the right end of the breather valve body, a front filter cavity A and a rear filter cavity A are arranged inside the upper end of the breather valve body, a front filter cavity B and a rear filter cavity B are arranged inside the lower end of the breather valve body, the front filter cavity A and the front filter cavity B are communicated through a first channel, the rear filter cavity A and the rear filter cavity B are communicated through a second channel, an air inlet channel communicated with the side surface of the first channel is arranged in the air inlet joint, and an air suction channel communicated with the second channel is arranged in the air suction joint; the breather valve body is internally provided with a flow guide channel which penetrates through the upper end and the lower end of the breather valve body at a position between the front filter cavity A and the rear filter cavity A, the middle part of the flow guide channel is communicated with the second channel through a flow guide hole, the outer end side surfaces of the front filter cavity A and the front filter cavity B are respectively provided with an air inlet hole communicated with the flow guide channel, the outer end side surfaces of the rear filter cavity A and the rear filter cavity B are respectively provided with an exhaust joint communicated with the outside, the two sides of the flow guide hole in the flow guide channel are respectively provided with a diaphragm type one-way valve, filter elements are respectively arranged in the front filter cavity A, the rear filter cavity A, the front filter cavity B and the rear filter cavity B, and the upper end and the lower end of the breather valve body are respectively provided with an end cover; and a first reversing switch is arranged at the intersection of the first passage and the air inlet passage, and a second reversing switch is arranged at the intersection of the second passage and the air suction passage. When the breathing mask is used, the air inlet joint is connected with an oxygen pipe on a breathing machine, the air inlet joint is connected with the air suction mask, a patient wears the air suction mask, the air inlet channel is communicated with the front filter cavity A through the first reversing switch, the flow guide hole, the rear filter cavity A and the air suction channel are communicated through the second reversing switch, when the patient inhales air, oxygen in the oxygen pipe sequentially enters the air suction mask after passing through the air inlet channel, the first channel, the front filter cavity A (filtered by the filter element), the air inlet hole, the flow guide channel, the diaphragm type one-way valve, the flow guide hole and the air suction channel, and when the patient exhales air (carbon dioxide), the carbon dioxide is exhausted from the air exhaust joint after passing through the air suction channel, the second channel and the rear filter cavity A (filtered by the filter element); when the filter element needs to be replaced regularly, the breathing machine does not need to be stopped, medical staff enable the air inlet channel to be communicated with the front filter cavity B through the first reversing switch, enable the flow guide hole, the rear filter cavity B and the air suction channel to be communicated through the second reversing switch, at the moment, oxygen is filtered through the front filter cavity B, discharged carbon dioxide is filtered from the rear filter cavity B and then discharged, and at the moment, the medical staff open the end covers at the positions corresponding to the front filter cavity A and the rear filter cavity A and then replace the filter element; when the respirator is matched with the breathing valve component for use, other filters do not need to be arranged outside, the machine does not need to be stopped when the filter element is replaced, and a patient can continuously inhale oxygen, so that the recovery of the patient is facilitated; the production efficiency of the filter element is much higher than that of the filter, and the cost of the filter element is low, so that the cost is reduced.

Preferably, a first cylindrical cavity is arranged at the intersection of the first passage and the air inlet passage, the first reversing switch comprises a first switch body and a first switch knob, the first switch body and the first cylindrical cavity are rotationally sealed, and an L-shaped passage is arranged in the first switch body; a second cylindrical cavity is arranged at the intersection of the second channel and the air suction channel, the second reversing switch comprises a second switch body and a second switch knob, the second switch body and the second cylindrical cavity are rotationally sealed, and a T-shaped channel is arranged in the second switch body; the outer side surface of the breather valve body is provided with indication marks at positions corresponding to the first switch knob and the second switch knob, and pointers are arranged on the surfaces of the first switch knob and the second switch knob. The first switch knob and the second switch knob are rotated, and the rotating angle is determined through the pointer and the indicating mark, so that the air path can be accurately switched.

Preferably, the bottom of each of the rear filter cavity A and the rear filter cavity B is provided with a flow guide seat, the bottom of each flow guide seat is provided with a spherical concave hole, an air bag is arranged in each spherical concave hole, the top surface of each air bag is attached to the spherical concave hole, the bottom surface of each air bag is provided with a spherical concave cavity, the top surface of each air bag is provided with an air inlet pipe, and the outer end of each air inlet pipe extends into the flow guide channel; the edge of water conservancy diversion seat is equipped with a plurality of exhaust through-holes, and the lower extreme of exhaust through-hole and the open end lateral wall intercommunication of sphere shrinkage pool, when atmospheric pressure in the second passageway of gasbag downside is greater than the inside atmospheric pressure of gasbag, the lower extreme and the second passageway intercommunication of exhaust through-hole, when atmospheric pressure in the second passageway of gasbag downside is less than the inside atmospheric pressure of gasbag, the lower extreme of exhaust through-hole is sealed by the gasbag.

Preferably, the upper end of the flow guide seat is provided with a supporting convex ring, and the side surface of the supporting convex ring is provided with a plurality of air holes. Prop the cooperation of bulge loop, gas pocket for the process filter core that exhaled carbon dioxide can be abundant, the filter effect is better.

Preferably, the end cover is connected with the breather valve body in a clamping mode, an auxiliary air pipe stretching into the flow guide channel is arranged at the center of the end cover, a sealing plug is arranged at the outer end of the auxiliary air pipe, an air distribution cover is arranged at the inner end of the auxiliary air pipe, and a plurality of air distribution holes are uniformly distributed in the air distribution cover. The sealing plug at the outer end of the auxiliary air pipe is opened, then the pipeline of the atomizer is connected with the auxiliary air pipe, and the atomized medicine can be led in, so that the patient can be treated by the medicine under the state of oxygen inhalation.

Preferably, the outer end of the exhaust joint is connected with a carbon dioxide indicator tube, the upper end of the carbon dioxide indicator tube is clamped with the exhaust joint, a bracket is arranged at the lower end of the carbon dioxide indicator tube, the bracket is in threaded connection with the carbon dioxide indicator tube, a clamping groove is formed in the center of the bracket, and carbon dioxide detection test paper is arranged in the clamping groove. The medical personnel can roughly judge the concentration of the carbon dioxide through the color of the carbon dioxide detection test paper in the carbon dioxide indicator tube.

Preferably, the outer end of the air inlet joint is provided with a flexible rubber pipe, a plurality of oxygen channels are arranged in the flexible rubber pipe, the outer end of the flexible rubber pipe is provided with a pipe joint, the inner end of the flexible rubber pipe is connected with the air inlet joint through a thread connecting sleeve, and the outer end of the flexible rubber pipe is connected with the pipe joint through a thread connecting sleeve. The flexible rubber tube can be bent and twisted to a certain degree, and is more flexible.

Therefore, the filter element is arranged in the breather valve component, and a filter is not required to be arranged outside; when the filter element is replaced, the breathing machine does not need to be stopped, and the filter element is more convenient to replace.

Drawings

FIG. 1 is a schematic diagram of a structure of the present invention.

Fig. 2 is a sectional view of fig. 1.

Fig. 3 is a schematic structural diagram of a breather valve body.

Fig. 4 is a partially enlarged view of C in fig. 2.

Fig. 5 is a schematic view of the internal structure of the carbon dioxide indicating tube.

Fig. 6 is a schematic diagram of the first reversing switch and the second reversing switch after rotation.

Fig. 7 is a cross-sectional view of fig. 6.

In the figure: the breathing valve comprises a breathing valve body 1, an air inlet connector 2, an air suction connector 3, a front filter cavity A4, a rear filter cavity A5, a front filter cavity B6, a rear filter cavity B7, a first channel 8, a second channel 9, an air inlet channel 10, an air suction channel 11, a flow guide channel 12, a flow guide hole 13, an air inlet hole 14, an air outlet connector 15, a diaphragm type one-way valve 16, a filter element 17, an end cover 18, an auxiliary air pipe 19, a sealing plug 20, an air distribution cover 21, a first reversing switch 22, a first switch body 220, a first switch knob 221, an L-shaped channel 222, a second reversing switch 23, a second switch body 230, a second switch knob 231, a T-shaped channel 232, a first cylindrical cavity 24, a second cylindrical cavity 25, a flow guide seat 26, an air outlet through hole 260, a support convex ring 261, an air hole 262, an air bag 27, a spherical cavity 270, an air inlet pipe 28, a carbon dioxide indicator pipe 29, a bracket 290, a clamping groove 291, a carbon dioxide detection test paper 292, a flexible rubber pipe 30, an oxygen channel 31, a pipe connector 32 and a threaded connecting sleeve 33.

Detailed Description

The invention is further described with reference to the accompanying drawings and the detailed description below:

as shown in fig. 1, 2 and 3, the structure of the breathing valve assembly for a respirator includes a breathing valve body 1, an air inlet joint 2 is arranged at the left end of the breathing valve body 1, an air suction joint 3 is arranged at the right end of the breathing valve body 1, a front filter cavity A4 and a rear filter cavity A5 are arranged inside the upper end of the breathing valve body 1, a front filter cavity B6 and a rear filter cavity B7 are arranged inside the lower end of the breathing valve body 1, the front filter cavity a and the front filter cavity B are communicated with each other through a first channel 8, the rear filter cavity a and the rear filter cavity B are communicated with each other through a second channel 9, an air inlet channel 10 communicated with the side surface of the first channel is arranged in the air inlet joint 2, and an air suction channel 11 communicated with the second channel is arranged in the air suction joint 3; a flow guide channel 12 penetrating through the upper end and the lower end of the breather valve body is arranged at a position between the front filter cavity A and the rear filter cavity A in the breather valve body 1, the middle part of the flow guide channel is communicated with the second channel through a flow guide hole 13, the outer end side surfaces of the front filter cavity A and the front filter cavity B are respectively provided with an air inlet 14 communicated with the flow guide channel, the outer end side surfaces of the rear filter cavity A and the rear filter cavity B are respectively provided with an exhaust joint 15 communicated with the outside, both sides of the flow guide hole in the flow guide channel 12 are respectively provided with a diaphragm type one-way valve 16, the front filter cavity A, the rear filter cavity A, the front filter cavity B and the rear filter cavity B are respectively provided with a filter element 17, the upper end and the lower end of the breather valve body 1 are respectively provided with an end cover 18, the end covers 18 are connected with the breather valve body 1 in a clamping manner, the centers of the end covers 18 are provided with auxiliary air pipes 19 extending into the flow guide channel, the outer ends of the auxiliary air pipes are provided with sealing plugs 20, the inner ends of the auxiliary air pipes 19 are provided with air distribution covers 21, and a plurality of air distribution holes are uniformly distributed on the air distribution covers; a first reversing switch 22 is arranged at the intersection of the first passage 8 and the air inlet passage 10, and a second reversing switch 23 is arranged at the intersection of the second passage and the air suction passage. The outer end of the air inlet joint 2 is provided with a flexible rubber pipe 30, a plurality of oxygen channels 31 are arranged in the flexible rubber pipe, the outer end of the flexible rubber pipe is provided with a pipe joint 32, the inner end of the flexible rubber pipe is connected with the air inlet joint through a threaded connecting sleeve 33, and the outer end of the flexible rubber pipe is connected with the pipe joint through a threaded connecting sleeve.

A first cylindrical cavity 24 is arranged at the intersection of the first channel 8 and the air inlet channel 10, the first reversing switch 22 comprises a first switch body 220 and a first switch knob 221, the first switch body and the first cylindrical cavity are rotationally sealed, and an L-shaped channel 222 is arranged in the first switch body; a second cylindrical cavity 25 is arranged at the intersection of the second channel 9 and the air suction channel 11, the second reversing switch 23 comprises a second switch body 230 and a second switch knob 231, the second switch body and the second cylindrical cavity are rotationally sealed, and a T-shaped channel 232 is arranged in the second switch body; indication marks are arranged on the outer side surface of the breather valve body and at the positions corresponding to the first switch knob and the second switch knob, and pointers are arranged on the surfaces of the first switch knob and the second switch knob; as shown in fig. 1 and 6, the indicators are marked as a and B, when the pointers of the first switch knob and the second switch knob point to the position a (as shown in fig. 1, in this state, the positions of the first switch body 220 and the second switch body 230 are shown in fig. 2), the gas passes through the front filter chamber A4 and the rear filter chamber A5, and when the pointers of the first switch knob and the second switch knob rotate to the position B (as shown in fig. 6, in this state, the positions of the first switch body 220 and the second switch body 230 are shown in fig. 7), the gas passes through the front filter chamber B6 and the rear filter chamber B7.

As shown in fig. 4, the bottom of each of the post-filter cavity a and the post-filter cavity B is provided with a flow guide seat 26, the bottom of the flow guide seat 26 is provided with a spherical concave hole, an air bag 27 is arranged in the spherical concave hole, the top surface of the air bag is attached to the spherical concave hole, the bottom surface of the air bag 27 is provided with a spherical concave cavity 270, the top surface of the air bag is provided with an air inlet pipe 28, and the outer end of the air inlet pipe extends into the flow guide channel 12; a plurality of exhaust through holes 260 are arranged at the edge of the flow guide seat 26, the lower ends of the exhaust through holes are communicated with the side wall of the opening end of the spherical concave hole, when the air pressure in the second channel at the lower side of the air bag 27 is greater than the air pressure in the air bag, the lower ends of the exhaust through holes are communicated with the second channel, and when the air pressure in the second channel at the lower side of the air bag is less than the air pressure in the air bag, the lower ends of the exhaust through holes are sealed by the air bag; the upper end of the guide base 26 is provided with a supporting convex ring 261, and the side surface of the supporting convex ring is provided with a plurality of air holes 262.

As shown in fig. 5, the outer end of the exhaust joint 15 is connected with a carbon dioxide indicator tube 29, the upper end of the carbon dioxide indicator tube 29 is clamped with the exhaust joint, the lower end of the carbon dioxide indicator tube is provided with a bracket 290, the bracket is in threaded connection with the carbon dioxide indicator tube, the center of the bracket 290 is provided with a clamping groove 291, and carbon dioxide detection test paper 292 is arranged in the clamping groove.

The principle of the invention is as follows with reference to the attached drawings: when the breathing mask is used, the air inlet connector 2 is connected with an oxygen pipe on a breathing machine, the air inlet connector 3 is connected with an air inlet mask, a patient wears the air inlet mask, the first reversing switch is rotated to enable a pointer on the first reversing switch to point to the indication mark A, the second reversing switch is rotated to enable a pointer on the second reversing switch to point to the indication mark A, at the moment, the states of the first reversing switch and the second reversing switch are shown in figures 1 and 2, when the patient inhales gas, the oxygen in the oxygen pipe sequentially passes through the air inlet channel, the first channel, the front filter cavity A (filtered by the filter element), the air inlet hole, the flow guide channel, the diaphragm type one-way valve, the flow guide hole and the air inlet channel and then enters the air inlet mask, and when the patient exhales gas (carbon dioxide), the carbon dioxide gas passes through the air inlet channel, the second channel and the rear filter cavity A (filtered by the filter element) and then is exhausted from the air exhaust connector; when the filter element needs to be replaced regularly, the breathing machine does not need to be stopped, medical staff rotate the first reversing switch and the second reversing switch to the state shown in the figure 6 (figure 7), at the moment, oxygen is filtered by the front filter cavity B, discharged carbon dioxide is filtered by the rear filter cavity B and then discharged, and the medical staff can open the end covers at the corresponding positions of the front filter cavity A and the rear filter cavity A and then replace the filter element; when the respirator is matched with the breathing valve component for use, other filters do not need to be arranged outside, the machine does not need to be stopped when the filter element is replaced, and a patient can continuously inhale oxygen, so that the recovery of the patient is facilitated; the production efficiency of the filter element is much higher than that of the filter, and the cost of the filter element is low, so that the cost is reduced.

The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto, for example, a carbon dioxide indicator tube, a carbon dioxide test paper are directly replaced with a carbon dioxide detector to detect the carbon dioxide content of the exhaled breath. Any simple changes, equivalent substitutions or modifications based on the present invention to solve the same technical problems and achieve the same technical effects are all covered by the protection scope of the present invention.

Claims

1. A breather valve component structure for a breather comprises a breather valve body, wherein an air inlet joint is arranged at the left end of the breather valve body, and an air suction joint is arranged at the right end of the breather valve body; the breather valve is characterized in that a flow guide channel penetrating through the upper end and the lower end of the breather valve body is arranged at a position between the front filter cavity A and the rear filter cavity A in the breather valve body, the middle part of the flow guide channel is communicated with the second channel through a flow guide hole, the outer end side surfaces of the front filter cavity A and the front filter cavity B are respectively provided with an air inlet communicated with the flow guide channel, the outer end side surfaces of the rear filter cavity A and the rear filter cavity B are respectively provided with an exhaust joint communicated with the outside, two sides of the flow guide hole in the flow guide channel are respectively provided with a diaphragm type one-way valve, filter elements are respectively arranged in the front filter cavity A, the rear filter cavity A, the front filter cavity B and the rear filter cavity B, and the upper end and the lower end of the breather valve body are respectively provided with an end cover; a first reversing switch is arranged at the intersection of the first passage and the air inlet passage, and a second reversing switch is arranged at the intersection of the second passage and the air suction passage;

the bottom of the rear filter cavity A and the bottom of the rear filter cavity B are both provided with a flow guide seat, the bottom of the flow guide seat is provided with a spherical concave hole, an air bag is arranged in the spherical concave hole, the top surface of the air bag is attached to the spherical concave hole, the bottom surface of the air bag is provided with a spherical concave cavity, the top surface of the air bag is provided with an air inlet pipe, and the outer end of the air inlet pipe extends into the flow guide channel; the edge of water conservancy diversion seat is equipped with a plurality of exhaust through-holes, and the lower extreme of exhaust through-hole and the open end lateral wall intercommunication of sphere shrinkage pool, when atmospheric pressure in the second passageway of gasbag downside is greater than the inside atmospheric pressure of gasbag, the lower extreme and the second passageway intercommunication of exhaust through-hole, when atmospheric pressure in the second passageway of gasbag downside is less than the inside atmospheric pressure of gasbag, the lower extreme of exhaust through-hole is sealed by the gasbag.

2. The structure of the breathing valve assembly for the respirator as set forth in claim 1, wherein a first cylindrical cavity is formed at the junction of the first passage and the air inlet passage, the first reversing switch comprises a first switch body and a first switch knob, the first switch body is rotationally sealed with the first cylindrical cavity, and an L-shaped passage is formed in the first switch body; a second cylindrical cavity is arranged at the intersection of the second channel and the air suction channel, the second reversing switch comprises a second switch body and a second switch knob, the second switch body and the second cylindrical cavity are rotationally sealed, and a T-shaped channel is arranged in the second switch body; the breather valve is characterized in that indication marks are arranged on the outer side face of the breather valve body and at the corresponding positions of the first switch knob and the second switch knob, and pointers are arranged on the surfaces of the first switch knob and the second switch knob.

3. The structure of the breathing valve assembly as claimed in claim 1, wherein the upper end of the flow guide seat is provided with a support protruding ring, and the side surface of the support protruding ring is provided with a plurality of air holes.

4. The structure of the breather valve assembly according to claim 1, wherein the end cap is connected with the breather valve body in a clamping manner, an auxiliary air pipe extending into the flow guide channel is arranged in the center of the end cap, a sealing plug is arranged at the outer end of the auxiliary air pipe, an air distribution cover is arranged at the inner end of the auxiliary air pipe, and a plurality of air distribution holes are uniformly distributed in the air distribution cover.

5. The structure of the breather valve assembly according to claim 1, wherein the outer end of the exhaust joint is connected with a carbon dioxide indicator tube, the upper end of the carbon dioxide indicator tube is clamped with the exhaust joint, the lower end of the carbon dioxide indicator tube is provided with a bracket, the bracket is in threaded connection with the carbon dioxide indicator tube, the center of the bracket is provided with a clamping groove, and carbon dioxide detection test paper is arranged in the clamping groove.

6. The structure of the breathing valve assembly of claim 1, wherein the outer end of the air inlet connector is provided with a flexible rubber hose, the flexible rubber hose is internally provided with a plurality of oxygen channels, the outer end of the flexible rubber hose is provided with a pipe connector, the inner end of the flexible rubber hose is connected with the air inlet connector through a thread connecting sleeve, and the outer end of the flexible rubber hose is connected with the pipe connector through a thread connecting sleeve.