CN210355624U

CN210355624U - Pressure safety valve for respiratory trachea

Info

Publication number: CN210355624U
Application number: CN201822255926.1U
Authority: CN
Inventors: 张超乐
Original assignee: Sunmed Ap Ltd
Current assignee: Sunmed Ap Ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2020-04-21
Anticipated expiration: 2028-12-29

Abstract

The utility model belongs to the technical field of medical instrument for the trachea of respiration comes controlled flow and pressure. The pressure safety valve for the respiratory trachea is characterized in that an air inlet and an air outlet are formed in two ends of a valve body of the pressure safety valve, the valve body comprises a first cavity for controlling a pressure threshold value and a second cavity for adjusting flow, the first cavity is controlled by an end cover which is buckled, and the second cavity is controlled by a knob and a spring in a matched mode. The safety valve is used in medical equipment, and can help doctors to finely control the flow and pressure of the respiratory trachea aiming at people with cardiopulmonary diseases.

Description

Pressure safety valve for respiratory trachea

Technical Field

The utility model belongs to the technical field of medical instrument, in particular to a pressure relief valve for controlling gas flow in respiratory tube.

Background

The traditional breathing mask is connected with the oxygen supply equipment through a common straw without an additional control device. A control valve is provided at the opening of the support equipment, such as an oxygen tank, but this valve is of a coarse control type and does not allow fine adjustment of the flow and control of the pressure in the breathing mask. In the medical industry, for patients with cardiopulmonary diseases, the pressure of a breathing mask needs to be controlled within a reasonable range, and doctors judge the disease condition according to the breathing condition of the patients, so that a valve for controlling a breathing trachea needs to be developed for the condition.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a pressure relief valve for breathing trachea, can be comparatively meticulous regulation breathing trachea in the gas flow and the control pressure.

In order to solve the technical problem, the utility model discloses a technical scheme does:

a pressure safety valve for a breathing tube is characterized in that an air inlet and an air outlet are arranged at two ends of a valve body of the pressure safety valve, the valve body comprises a first chamber for controlling a pressure threshold value and a second chamber for adjusting flow linear change, the first chamber is controlled by a buckled end cover, and the second chamber is controlled by a knob and a spring in a matched mode.

Further, the volume of the first chamber is smaller than the volume of the second chamber.

Further, first cavity includes the valve and is used for sealing the end cover of valve, the valve is cylindricly, the end cover includes flexible link arm and plunger, flexible link arm's one end with the valve body is fixed, flexible link arm's the other end with the plunger is connected.

Furthermore, the second chamber comprises a circumferential wall, a piston and a sealing cover provided with a first through hole, the sealing cover and the piston are matched to movably seal one end of the circumferential wall, and a second through hole is formed in the other end of the circumferential wall.

Furthermore, one end of the knob is provided with a limiting cavity, and the outside of the knob is provided with a threaded part; one end of the spring is arranged in the limiting cavity, and the other end of the spring is connected with the piston.

Furthermore, a threaded channel is arranged on one side surface of the valve body, and the threaded part is matched with the threaded channel; one end of the threaded passage extends into the circumferential wall.

Further, a sealing ring is arranged between the threaded passage and the threaded portion.

The utility model provides a pressure relief valve for respiratory trachea, control flow and pressure in the expiratory trachea of connection through two cavities, the first cavity realizes controlling the pressure threshold value by the end cover of lock, when the pressure of first cavity is too big, can open the end cover, the maximum threshold value of control pressure; the second chamber gradually applies pressure by continuously extruding the spring through the knob, and the gas flow can be controlled within a certain pressure interval.

Compared with the prior art, the utility model discloses following beneficial effect has:

the safety valve is used in medical equipment and can help doctors to finely control the flow and pressure of a respiratory trachea aiming at people with cardiopulmonary diseases.

Secondly, the safety valve is completely realized through a mechanical structure, and the safety valve is simple in structure and easy to realize.

Drawings

Fig. 1 is an exploded view of an embodiment of the present invention;

fig. 2 is a cross-sectional view of an embodiment of the present invention;

in the figure: 3-air inlet, 4-air outlet, 10-second chamber, 11-bottom cover, 12-upper cover, 121-circumferential wall, 122-second through hole, 13-sealing cover, 131-first through hole, 14-piston, 15-spring, 16-knob, 168-threaded part, 17-sealing ring, 20-first chamber, 21-end cover, 211-flexible connecting arm, 212-plunger, 213-collar, 28-air valve and 29-air valve core.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example (b):

as shown in fig. 1-2, a pressure safety valve for a breathing tube, wherein an air inlet 3 and an air outlet 4 are respectively arranged at two ends of a valve body of the pressure safety valve, and the air outlet 4 is connected to a breathing mask through an air tube; the valve body includes bottom 11 and upper cover 12, sets up two die cavities in the bottom 11: the pressure control valve comprises a first chamber 20 and a second chamber 10, wherein the first chamber 20 controls the pressure threshold in the valve body through a buckled end cover 21, and the second chamber 10 controls the flow change to achieve the discharge flow at any time and any place through a knob 16 and a spring 15.

The capacity of the first chamber 20 is smaller than that of the second chamber 10, and the two chambers are communicated through the gap in the valve body and the first through hole 131.

The opening and closing degree of the first chamber 20 corresponding to the opening position on the upper cover 12 is controlled by an end cover 21 and a valve 28, the end cover 21 comprises a flexible connecting arm 211, one end of the flexible connecting arm 211 is connected with a plunger 212, and the other end of the flexible connecting arm is provided with a clamping ring 213; the valve 28 is substantially cylindrical, with a valve core 29 disposed inside and a connecting neck disposed around the outside. The collar 213 is sleeved on the periphery of the valve 28 and inserted into the opening position on the upper cover 12, the connecting neck limits the collar 213 to prevent separation, the flexible connecting arm 211 is bent, and the plunger 212 is inserted into the valve 28 to block the valve core. The first chamber 20 is now sealed and the pressure threshold inside the valve body is at a maximum, the gas flow can be gradually increased.

The second chamber 10 comprises a circumferential wall 121, a piston 14 and a sealing cover 13, wherein the circumferential wall 12 is perpendicular to the upper cover 12, one end of the circumferential wall is movably sealed by the sealing cover 13 and the piston 14 in a matching way, and the other end of the circumferential wall is provided with a threaded passage at a corresponding position of the upper cover 12; the center of the cover 13 is provided with a first through hole 131, the piston 14 is disc-shaped, one side surface is provided with a guide pin matched with the first through hole 131, and the other side surface is connected with the spring 15. When the first chamber 20 is sealed, the pressure threshold is increased, the flow rate of the second chamber 10 is gradually increased within the flow rate range corresponding to the threshold, the piston 14 is slowly pushed open and compresses the spring, and the gas entering the second chamber 10 flows into the outside through the second through hole 122. The remainder, except for the outgoing air, flows into the breathing mask through the air outlet 4. If the gas is leaked, the elasticity of the spring is reduced by the reverse rotation knob.

The knob 16 has a handle at one end and a limiting cavity at the other end for pushing the spring 15, and a threaded portion 168 is formed on the outer peripheral surface. A threaded passage extends into the second chamber 10 in the upper cover 12, and a knob 16 is used to push the piston 14 by rotating and compressing the spring 15. Further, a seal is provided between the threaded passage and the threaded portion 168 to prevent gas from leaking too quickly therefrom.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. The utility model provides a pressure relief valve for respiratory trachea, the both ends of its valve body are provided with air inlet and gas outlet, its characterized in that: the valve body comprises a first cavity and a second cavity, the first cavity controls the pressure threshold value, the flow rate of the second cavity is adjusted, the first cavity is controlled by the buckled end cover, and the second cavity is controlled by the matching of a knob and a spring.

2. The pressure safety valve of claim 1, wherein: the volume of the first chamber is less than the volume of the second chamber.

3. The pressure safety valve of claim 1, wherein: the first chamber comprises an air valve and an end cover used for sealing the air valve, the air valve is cylindrical, the end cover comprises a flexible connecting arm and a plunger, one end of the flexible connecting arm is fixed with the valve body, and the other end of the flexible connecting arm is connected with the plunger.

4. The pressure safety valve of claim 1, wherein: the second chamber comprises a circumferential wall, a piston and a sealing cover provided with a first through hole, the sealing cover is matched with the piston to movably seal one end of the circumferential wall, and a second through hole is formed in the other end of the circumferential wall.

5. The pressure safety valve of claim 4, wherein: one end of the knob is provided with a limiting cavity, and the outside of the knob is provided with a threaded part; one end of the spring is arranged in the limiting cavity, and the other end of the spring is connected with the piston.

6. The pressure safety valve of claim 5, wherein: a threaded channel is arranged on one side surface of the valve body, and the threaded part is matched with the threaded channel; one end of the threaded passage extends into the circumferential wall.

7. The pressure safety valve of claim 6, wherein: and a sealing ring is arranged between the threaded passage and the threaded part.